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gtk2/gsk/gl/gskglrenderjob.c
Sebastian Keller f1d44635bd gsk/gl: Always align offscreen rendering with the pixel grid 
This fixes two issues with the offscreen rendering code for nodes with
bounds not aligned with the pixel grid:

1.) When drawing to an offscreen buffer the size of the offscreen buffer
was rounded up, but then later when used as texture the vertices
correspond to the original bounds with the unrounded size. This could
then result in the offscreen texture being drawn onscreen at a slightly
smaller size, which then lead to it being visually shifted and blurry.

This is fixed by adjusting the u/v coordinates to ignore the padding
region in the offscreen texture that got added by the size increase from
rounding.

2.) The viewport used when rendering to the offscreen buffer was not
aligned with the pixel grid for nodes at coordinates not aligned with
the pixel grid. Then because the content of the offscreen buffer is not
aligned with the pixel grid and later when used as textures sampling
from it will result in interpolated values for an onscreen pixel. This
could also result in shifting and blurriness, especially for nested
offscreen rendering at different offsets.

This is fixed by adding similar padding at the beginning of the
texture and also adjusting the u/v coordinates to ignore this region.

Fixes: https://gitlab.gnome.org/GNOME/gtk/-/issues/3833
2022-04-21 19:23:06 -04:00

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/* gskglrenderjob.c
*
* Copyright 2017 Timm Bäder <mail@baedert.org>
* Copyright 2018 Matthias Clasen <mclasen@redhat.com>
* Copyright 2018 Alexander Larsson <alexl@redhat.com>
* Copyright 2020 Christian Hergert <chergert@redhat.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* SPDX-License-Identifier: LGPL-2.1-or-later
*/
#include "config.h"
#include <gdk/gdkglcontextprivate.h>
#include <gdk/gdkprofilerprivate.h>
#include <gdk/gdkrgbaprivate.h>
#include <gsk/gskrendernodeprivate.h>
#include <gsk/gskglshaderprivate.h>
#include <gdk/gdktextureprivate.h>
#include <gsk/gsktransformprivate.h>
#include <gsk/gskroundedrectprivate.h>
#include <math.h>
#include <string.h>
#include "gskglcommandqueueprivate.h"
#include "gskgldriverprivate.h"
#include "gskglglyphlibraryprivate.h"
#include "gskgliconlibraryprivate.h"
#include "gskglprogramprivate.h"
#include "gskglrenderjobprivate.h"
#include "gskglshadowlibraryprivate.h"
#include "ninesliceprivate.h"
#include "fp16private.h"
#define ORTHO_NEAR_PLANE -10000
#define ORTHO_FAR_PLANE 10000
#define MAX_GRADIENT_STOPS 6
#define SHADOW_EXTRA_SIZE 4
/* Make sure gradient stops fits in packed array_count */
G_STATIC_ASSERT ((MAX_GRADIENT_STOPS * 5) < (1 << GSK_GL_UNIFORM_ARRAY_BITS));
#define rounded_rect_top_left(r) \
(GRAPHENE_RECT_INIT(r->bounds.origin.x, \
r->bounds.origin.y, \
r->corner[0].width, r->corner[0].height))
#define rounded_rect_top_right(r) \
(GRAPHENE_RECT_INIT(r->bounds.origin.x + r->bounds.size.width - r->corner[1].width, \
r->bounds.origin.y, \
r->corner[1].width, r->corner[1].height))
#define rounded_rect_bottom_right(r) \
(GRAPHENE_RECT_INIT(r->bounds.origin.x + r->bounds.size.width - r->corner[2].width, \
r->bounds.origin.y + r->bounds.size.height - r->corner[2].height, \
r->corner[2].width, r->corner[2].height))
#define rounded_rect_bottom_left(r) \
(GRAPHENE_RECT_INIT(r->bounds.origin.x, \
r->bounds.origin.y + r->bounds.size.height - r->corner[2].height, \
r->corner[3].width, r->corner[3].height))
#define rounded_rect_corner0(r) rounded_rect_top_left(r)
#define rounded_rect_corner1(r) rounded_rect_top_right(r)
#define rounded_rect_corner2(r) rounded_rect_bottom_right(r)
#define rounded_rect_corner3(r) rounded_rect_bottom_left(r)
#define rounded_rect_corner(r, i) (rounded_rect_corner##i(r))
#define ALPHA_IS_CLEAR(alpha) ((alpha) < ((float) 0x00ff / (float) 0xffff))
#define RGBA_IS_CLEAR(rgba) ALPHA_IS_CLEAR((rgba)->alpha)
typedef struct _GskGLRenderClip
{
GskRoundedRect rect;
guint is_rectilinear : 1;
guint is_fully_contained : 1;
} GskGLRenderClip;
typedef struct _GskGLRenderModelview
{
GskTransform *transform;
float scale_x;
float scale_y;
float dx;
float dy;
float offset_x_before;
float offset_y_before;
graphene_matrix_t matrix;
} GskGLRenderModelview;
struct _GskGLRenderJob
{
/* The context containing the framebuffer we are drawing to. Generally this
* is the context of the surface but may be a shared context if rendering to
* an offscreen texture such as gsk_gl_renderer_render_texture().
*/
GdkGLContext *context;
/* The driver to be used. This is shared among all the renderers on a given
* GdkDisplay and uses the shared GL context to send commands.
*/
GskGLDriver *driver;
/* The command queue (which is just a faster pointer to the driver's
* command queue.
*/
GskGLCommandQueue *command_queue;
/* The region that we are clipping. Normalized to a single rectangle region. */
cairo_region_t *region;
/* The framebuffer to draw to in the @context GL context. So 0 would be the
* default framebuffer of @context. This is important to note as many other
* operations could be done using objects shared from the command queues
* GL context.
*/
guint framebuffer;
guint default_framebuffer;
/* The viewport we are using. This state is updated as we process render
* nodes in the specific visitor callbacks.
*/
graphene_rect_t viewport;
/* The current projection, updated as we process nodes */
graphene_matrix_t projection;
/* An array of GskGLRenderModelview updated as nodes are processed. The
* current modelview is the last element.
*/
GArray *modelview;
/* An array of GskGLRenderClip updated as nodes are processed. The
* current clip is the last element.
*/
GArray *clip;
/* Our current alpha state as we process nodes */
float alpha;
/* Offset (delta x,y) as we process nodes. Occasionally this is merged into
* a transform that is referenced from child transform nodes.
*/
float offset_x;
float offset_y;
/* The scale we are processing, possibly updated by transforms */
float scale_x;
float scale_y;
/* Cached pointers */
const GskGLRenderClip *current_clip;
const GskGLRenderModelview *current_modelview;
GskGLProgram *current_program;
/* If we should be rendering red zones over fallback nodes */
guint debug_fallback : 1;
/* In some cases we might want to avoid clearing the framebuffer
* because we're going to render over the existing contents.
*/
guint clear_framebuffer : 1;
/* Format we want to use for intermediate textures, determined by
* looking at the format of the framebuffer we are rendering on.
*/
int target_format;
};
typedef struct _GskGLRenderOffscreen
{
/* The bounds to render */
const graphene_rect_t *bounds;
/* Return location for texture coordinates */
struct {
float x;
float y;
float x2;
float y2;
} area;
/* Return location for texture ID */
guint texture_id;
/* Whether to force creating a new texture, even if the
* input already is a texture
*/
guint force_offscreen : 1;
guint reset_clip : 1;
guint do_not_cache : 1;
guint linear_filter : 1;
/* Return location for whether we created a texture */
guint was_offscreen : 1;
} GskGLRenderOffscreen;
static void gsk_gl_render_job_visit_node (GskGLRenderJob *job,
const GskRenderNode *node);
static gboolean gsk_gl_render_job_visit_node_with_offscreen (GskGLRenderJob *job,
const GskRenderNode *node,
GskGLRenderOffscreen *offscreen);
static inline int
get_target_format (GskGLRenderJob *job,
const GskRenderNode *node)
{
if (gsk_render_node_prefers_high_depth (node))
return job->target_format;
return GL_RGBA8;
}
static inline void
init_full_texture_region (GskGLRenderOffscreen *offscreen)
{
offscreen->area.x = 0;
offscreen->area.y = 0;
offscreen->area.x2 = 1;
offscreen->area.y2 = 1;
}
static inline gboolean G_GNUC_PURE
node_is_invisible (const GskRenderNode *node)
{
return node->bounds.size.width == 0.0f ||
node->bounds.size.height == 0.0f;
}
static inline gboolean G_GNUC_PURE
rounded_rect_equal (const GskRoundedRect *r1,
const GskRoundedRect *r2)
{
return memcmp (r1, r2, sizeof (GskRoundedRect)) == 0;
}
static inline void
gsk_rounded_rect_shrink_to_minimum (GskRoundedRect *self)
{
self->bounds.size.width = MAX (self->corner[0].width + self->corner[1].width,
self->corner[3].width + self->corner[2].width);
self->bounds.size.height = MAX (self->corner[0].height + self->corner[3].height,
self->corner[1].height + self->corner[2].height);
}
static inline gboolean G_GNUC_PURE
node_supports_2d_transform (const GskRenderNode *node)
{
switch ((int)gsk_render_node_get_node_type (node))
{
case GSK_COLOR_NODE:
case GSK_OPACITY_NODE:
case GSK_COLOR_MATRIX_NODE:
case GSK_TEXTURE_NODE:
case GSK_CROSS_FADE_NODE:
case GSK_LINEAR_GRADIENT_NODE:
case GSK_REPEATING_LINEAR_GRADIENT_NODE:
case GSK_CONIC_GRADIENT_NODE:
case GSK_RADIAL_GRADIENT_NODE:
case GSK_REPEATING_RADIAL_GRADIENT_NODE:
case GSK_DEBUG_NODE:
case GSK_TEXT_NODE:
case GSK_CAIRO_NODE:
case GSK_BLEND_NODE:
case GSK_BLUR_NODE:
return TRUE;
case GSK_SHADOW_NODE:
return node_supports_2d_transform (gsk_shadow_node_get_child (node));
case GSK_TRANSFORM_NODE:
return node_supports_2d_transform (gsk_transform_node_get_child (node));
case GSK_CONTAINER_NODE:
for (guint i = 0, p = gsk_container_node_get_n_children (node); i < p; i++)
{
if (!node_supports_2d_transform (gsk_container_node_get_child (node, i)))
return FALSE;
}
return TRUE;
default:
return FALSE;
}
}
static inline gboolean G_GNUC_PURE
node_supports_transform (const GskRenderNode *node)
{
/* Some nodes can't handle non-trivial transforms without being
* rendered to a texture (e.g. rotated clips, etc.). Some however work
* just fine, mostly because they already draw their child to a
* texture and just render the texture manipulated in some way, think
* opacity or color matrix.
*/
switch ((int)gsk_render_node_get_node_type (node))
{
case GSK_COLOR_NODE:
case GSK_OPACITY_NODE:
case GSK_COLOR_MATRIX_NODE:
case GSK_TEXTURE_NODE:
case GSK_CROSS_FADE_NODE:
case GSK_DEBUG_NODE:
case GSK_TEXT_NODE:
case GSK_CAIRO_NODE:
case GSK_BLEND_NODE:
case GSK_BLUR_NODE:
return TRUE;
case GSK_SHADOW_NODE:
return node_supports_transform (gsk_shadow_node_get_child (node));
case GSK_TRANSFORM_NODE:
return node_supports_transform (gsk_transform_node_get_child (node));
default:
return FALSE;
}
}
static inline gboolean G_GNUC_PURE
color_matrix_modifies_alpha (const GskRenderNode *node)
{
const graphene_matrix_t *matrix = gsk_color_matrix_node_get_color_matrix (node);
const graphene_vec4_t *offset = gsk_color_matrix_node_get_color_offset (node);
graphene_vec4_t row3;
if (graphene_vec4_get_w (offset) != 0.0f)
return TRUE;
graphene_matrix_get_row (matrix, 3, &row3);
return !graphene_vec4_equal (graphene_vec4_w_axis (), &row3);
}
static inline gboolean G_GNUC_PURE
rect_contains_rect (const graphene_rect_t *r1,
const graphene_rect_t *r2)
{
return r2->origin.x >= r1->origin.x &&
(r2->origin.x + r2->size.width) <= (r1->origin.x + r1->size.width) &&
r2->origin.y >= r1->origin.y &&
(r2->origin.y + r2->size.height) <= (r1->origin.y + r1->size.height);
}
static inline gboolean
rounded_inner_rect_contains_rect (const GskRoundedRect *rounded,
const graphene_rect_t *rect)
{
const graphene_rect_t *rounded_bounds = &rounded->bounds;
graphene_rect_t inner;
float offset_x;
float offset_y;
/* TODO: This is pretty conservative and we could go further,
* more fine-grained checks to avoid offscreen drawing.
*/
offset_x = MAX (rounded->corner[GSK_CORNER_TOP_LEFT].width,
rounded->corner[GSK_CORNER_BOTTOM_LEFT].width);
offset_y = MAX (rounded->corner[GSK_CORNER_TOP_LEFT].height,
rounded->corner[GSK_CORNER_TOP_RIGHT].height);
inner.origin.x = rounded_bounds->origin.x + offset_x;
inner.origin.y = rounded_bounds->origin.y + offset_y;
inner.size.width = rounded_bounds->size.width - offset_x -
MAX (rounded->corner[GSK_CORNER_TOP_RIGHT].width,
rounded->corner[GSK_CORNER_BOTTOM_RIGHT].width);
inner.size.height = rounded_bounds->size.height - offset_y -
MAX (rounded->corner[GSK_CORNER_BOTTOM_LEFT].height,
rounded->corner[GSK_CORNER_BOTTOM_RIGHT].height);
return rect_contains_rect (&inner, rect);
}
static inline gboolean G_GNUC_PURE
rect_intersects (const graphene_rect_t *r1,
const graphene_rect_t *r2)
{
/* Assume both rects are already normalized, as they usually are */
if (r1->origin.x > (r2->origin.x + r2->size.width) ||
(r1->origin.x + r1->size.width) < r2->origin.x)
return FALSE;
else if (r1->origin.y > (r2->origin.y + r2->size.height) ||
(r1->origin.y + r1->size.height) < r2->origin.y)
return FALSE;
else
return TRUE;
}
static inline gboolean
rounded_rect_has_corner (const GskRoundedRect *r,
guint i)
{
return r->corner[i].width > 0 && r->corner[i].height > 0;
}
/* Current clip is NOT rounded but new one is definitely! */
static inline gboolean
intersect_rounded_rectilinear (const graphene_rect_t *non_rounded,
const GskRoundedRect *rounded,
GskRoundedRect *result)
{
gboolean corners[4];
/* Intersects with top left corner? */
corners[0] = rounded_rect_has_corner (rounded, 0) &&
rect_intersects (non_rounded,
&rounded_rect_corner (rounded, 0));
if (corners[0] && !rect_contains_rect (non_rounded,
&rounded_rect_corner (rounded, 0)))
return FALSE;
/* top right ? */
corners[1] = rounded_rect_has_corner (rounded, 1) &&
rect_intersects (non_rounded,
&rounded_rect_corner (rounded, 1));
if (corners[1] && !rect_contains_rect (non_rounded,
&rounded_rect_corner (rounded, 1)))
return FALSE;
/* bottom right ? */
corners[2] = rounded_rect_has_corner (rounded, 2) &&
rect_intersects (non_rounded,
&rounded_rect_corner (rounded, 2));
if (corners[2] && !rect_contains_rect (non_rounded,
&rounded_rect_corner (rounded, 2)))
return FALSE;
/* bottom left ? */
corners[3] = rounded_rect_has_corner (rounded, 3) &&
rect_intersects (non_rounded,
&rounded_rect_corner (rounded, 3));
if (corners[3] && !rect_contains_rect (non_rounded,
&rounded_rect_corner (rounded, 3)))
return FALSE;
/* We do intersect with at least one of the corners, but in such a way that the
* intersection between the two clips can still be represented by a single rounded
* rect in a trivial way. do that.
*/
graphene_rect_intersection (non_rounded, &rounded->bounds, &result->bounds);
for (guint i = 0; i < 4; i++)
{
if (corners[i])
result->corner[i] = rounded->corner[i];
else
result->corner[i].width = result->corner[i].height = 0;
}
return TRUE;
}
static inline void
init_projection_matrix (graphene_matrix_t *projection,
const graphene_rect_t *viewport)
{
graphene_matrix_init_ortho (projection,
viewport->origin.x,
viewport->origin.x + viewport->size.width,
viewport->origin.y,
viewport->origin.y + viewport->size.height,
ORTHO_NEAR_PLANE,
ORTHO_FAR_PLANE);
graphene_matrix_scale (projection, 1, -1, 1);
}
static inline float
gsk_gl_render_job_set_alpha (GskGLRenderJob *job,
float alpha)
{
if (job->alpha != alpha)
{
float ret = job->alpha;
job->alpha = alpha;
job->driver->stamps[UNIFORM_SHARED_ALPHA]++;
return ret;
}
return alpha;
}
static void
extract_matrix_metadata (GskGLRenderModelview *modelview)
{
gsk_transform_to_matrix (modelview->transform, &modelview->matrix);
switch (gsk_transform_get_category (modelview->transform))
{
case GSK_TRANSFORM_CATEGORY_IDENTITY:
modelview->scale_x = 1;
modelview->scale_y = 1;
modelview->dx = 0;
modelview->dy = 0;
break;
case GSK_TRANSFORM_CATEGORY_2D_TRANSLATE:
modelview->scale_x = 1;
modelview->scale_y = 1;
gsk_transform_to_translate (modelview->transform,
&modelview->dx, &modelview->dy);
break;
case GSK_TRANSFORM_CATEGORY_2D_AFFINE:
gsk_transform_to_affine (modelview->transform,
&modelview->scale_x, &modelview->scale_y,
&modelview->dx, &modelview->dy);
break;
case GSK_TRANSFORM_CATEGORY_2D:
{
float xx, xy, yx, yy, dx, dy;
gsk_transform_to_2d (modelview->transform,
&xx, &xy, &yx, &yy, &dx, &dy);
modelview->scale_x = sqrtf (xx * xx + xy * xy);
modelview->scale_y = sqrtf (yx * yx + yy * yy);
}
break;
case GSK_TRANSFORM_CATEGORY_UNKNOWN:
case GSK_TRANSFORM_CATEGORY_ANY:
case GSK_TRANSFORM_CATEGORY_3D:
{
graphene_vec3_t col1;
graphene_vec3_t col2;
/* TODO: 90% sure this is incorrect. But we should never hit this code
* path anyway. */
graphene_vec3_init (&col1,
graphene_matrix_get_value (&modelview->matrix, 0, 0),
graphene_matrix_get_value (&modelview->matrix, 1, 0),
graphene_matrix_get_value (&modelview->matrix, 2, 0));
graphene_vec3_init (&col2,
graphene_matrix_get_value (&modelview->matrix, 0, 1),
graphene_matrix_get_value (&modelview->matrix, 1, 1),
graphene_matrix_get_value (&modelview->matrix, 2, 1));
modelview->scale_x = graphene_vec3_length (&col1);
modelview->scale_y = graphene_vec3_length (&col2);
modelview->dx = 0;
modelview->dy = 0;
}
break;
default:
break;
}
}
static void
gsk_gl_render_job_set_modelview (GskGLRenderJob *job,
GskTransform *transform)
{
GskGLRenderModelview *modelview;
g_assert (job != NULL);
g_assert (job->modelview != NULL);
job->driver->stamps[UNIFORM_SHARED_MODELVIEW]++;
g_array_set_size (job->modelview, job->modelview->len + 1);
modelview = &g_array_index (job->modelview,
GskGLRenderModelview,
job->modelview->len - 1);
modelview->transform = transform;
modelview->offset_x_before = job->offset_x;
modelview->offset_y_before = job->offset_y;
extract_matrix_metadata (modelview);
job->offset_x = 0;
job->offset_y = 0;
job->scale_x = modelview->scale_x;
job->scale_y = modelview->scale_y;
job->current_modelview = modelview;
}
static void
gsk_gl_render_job_push_modelview (GskGLRenderJob *job,
GskTransform *transform)
{
GskGLRenderModelview *modelview;
g_assert (job != NULL);
g_assert (job->modelview != NULL);
g_assert (transform != NULL);
job->driver->stamps[UNIFORM_SHARED_MODELVIEW]++;
g_array_set_size (job->modelview, job->modelview->len + 1);
modelview = &g_array_index (job->modelview,
GskGLRenderModelview,
job->modelview->len - 1);
if G_LIKELY (job->modelview->len > 1)
{
GskGLRenderModelview *last;
GskTransform *t = NULL;
last = &g_array_index (job->modelview,
GskGLRenderModelview,
job->modelview->len - 2);
/* Multiply given matrix with our previous modelview */
t = gsk_transform_translate (gsk_transform_ref (last->transform),
&(graphene_point_t) {
job->offset_x,
job->offset_y
});
t = gsk_transform_transform (t, transform);
modelview->transform = t;
}
else
{
modelview->transform = gsk_transform_ref (transform);
}
modelview->offset_x_before = job->offset_x;
modelview->offset_y_before = job->offset_y;
extract_matrix_metadata (modelview);
job->offset_x = 0;
job->offset_y = 0;
job->scale_x = modelview->scale_x;
job->scale_y = modelview->scale_y;
job->current_modelview = modelview;
}
static void
gsk_gl_render_job_pop_modelview (GskGLRenderJob *job)
{
const GskGLRenderModelview *head;
g_assert (job != NULL);
g_assert (job->modelview);
g_assert (job->modelview->len > 0);
job->driver->stamps[UNIFORM_SHARED_MODELVIEW]++;
head = job->current_modelview;
job->offset_x = head->offset_x_before;
job->offset_y = head->offset_y_before;
gsk_transform_unref (head->transform);
job->modelview->len--;
if (job->modelview->len >= 1)
{
head = &g_array_index (job->modelview, GskGLRenderModelview, job->modelview->len - 1);
job->scale_x = head->scale_x;
job->scale_y = head->scale_y;
job->current_modelview = head;
}
else
{
job->current_modelview = NULL;
}
}
static void
gsk_gl_render_job_push_clip (GskGLRenderJob *job,
const GskRoundedRect *rect)
{
GskGLRenderClip *clip;
g_assert (job != NULL);
g_assert (job->clip != NULL);
g_assert (rect != NULL);
job->driver->stamps[UNIFORM_SHARED_CLIP_RECT]++;
g_array_set_size (job->clip, job->clip->len + 1);
clip = &g_array_index (job->clip, GskGLRenderClip, job->clip->len - 1);
memcpy (&clip->rect, rect, sizeof *rect);
clip->is_rectilinear = gsk_rounded_rect_is_rectilinear (rect);
clip->is_fully_contained = FALSE;
job->current_clip = clip;
}
static void
gsk_gl_render_job_push_contained_clip (GskGLRenderJob *job)
{
GskGLRenderClip *clip;
GskGLRenderClip *old_clip;
g_assert (job != NULL);
g_assert (job->clip != NULL);
g_assert (job->clip->len > 0);
job->driver->stamps[UNIFORM_SHARED_CLIP_RECT]++;
old_clip = &g_array_index (job->clip, GskGLRenderClip, job->clip->len - 1);
g_array_set_size (job->clip, job->clip->len + 1);
clip = &g_array_index (job->clip, GskGLRenderClip, job->clip->len - 1);
memcpy (&clip->rect.bounds, &old_clip->rect.bounds, sizeof (graphene_rect_t));
memset (clip->rect.corner, 0, sizeof clip->rect.corner);
clip->is_rectilinear = TRUE;
clip->is_fully_contained = TRUE;
job->current_clip = clip;
}
static void
gsk_gl_render_job_pop_clip (GskGLRenderJob *job)
{
g_assert (job != NULL);
g_assert (job->clip != NULL);
g_assert (job->clip->len > 0);
job->driver->stamps[UNIFORM_SHARED_CLIP_RECT]++;
job->current_clip--;
job->clip->len--;
}
static inline void
gsk_gl_render_job_offset (GskGLRenderJob *job,
float offset_x,
float offset_y)
{
if (offset_x || offset_y)
{
job->offset_x += offset_x;
job->offset_y += offset_y;
}
}
static inline void
gsk_gl_render_job_set_projection (GskGLRenderJob *job,
const graphene_matrix_t *projection)
{
memcpy (&job->projection, projection, sizeof job->projection);
job->driver->stamps[UNIFORM_SHARED_PROJECTION]++;
}
static inline void
gsk_gl_render_job_set_projection_from_rect (GskGLRenderJob *job,
const graphene_rect_t *rect,
graphene_matrix_t *prev_projection)
{
if (prev_projection)
memcpy (prev_projection, &job->projection, sizeof *prev_projection);
init_projection_matrix (&job->projection, rect);
job->driver->stamps[UNIFORM_SHARED_PROJECTION]++;
}
static inline void
gsk_gl_render_job_set_projection_for_size (GskGLRenderJob *job,
float width,
float height,
graphene_matrix_t *prev_projection)
{
if (prev_projection)
memcpy (prev_projection, &job->projection, sizeof *prev_projection);
graphene_matrix_init_ortho (&job->projection, 0, width, 0, height, ORTHO_NEAR_PLANE, ORTHO_FAR_PLANE);
graphene_matrix_scale (&job->projection, 1, -1, 1);
job->driver->stamps[UNIFORM_SHARED_PROJECTION]++;
}
static inline void
gsk_gl_render_job_set_viewport (GskGLRenderJob *job,
const graphene_rect_t *viewport,
graphene_rect_t *prev_viewport)
{
if (prev_viewport)
memcpy (prev_viewport, &job->viewport, sizeof *prev_viewport);
memcpy (&job->viewport, viewport, sizeof job->viewport);
job->driver->stamps[UNIFORM_SHARED_VIEWPORT]++;
}
static inline void
gsk_gl_render_job_set_viewport_for_size (GskGLRenderJob *job,
float width,
float height,
graphene_rect_t *prev_viewport)
{
if (prev_viewport)
memcpy (prev_viewport, &job->viewport, sizeof *prev_viewport);
job->viewport.origin.x = 0;
job->viewport.origin.y = 0;
job->viewport.size.width = width;
job->viewport.size.height = height;
job->driver->stamps[UNIFORM_SHARED_VIEWPORT]++;
}
static inline void
gsk_gl_render_job_transform_bounds (GskGLRenderJob *job,
const graphene_rect_t *rect,
graphene_rect_t *out_rect)
{
GskTransform *transform;
GskTransformCategory category;
g_assert (job != NULL);
g_assert (job->modelview->len > 0);
g_assert (rect != NULL);
g_assert (out_rect != NULL);
transform = job->current_modelview->transform;
category = gsk_transform_get_category (transform);
/* Our most common transform is 2d-affine, so inline it.
* Both identity and 2d-translate are virtually unseen here.
*/
if G_LIKELY (category >= GSK_TRANSFORM_CATEGORY_2D_AFFINE)
{
float scale_x = job->current_modelview->scale_x;
float scale_y = job->current_modelview->scale_y;
float dx = job->current_modelview->dx;
float dy = job->current_modelview->dy;
/* Init directly into out rect */
out_rect->origin.x = ((rect->origin.x + job->offset_x) * scale_x) + dx;
out_rect->origin.y = ((rect->origin.y + job->offset_y) * scale_y) + dy;
out_rect->size.width = rect->size.width * scale_x;
out_rect->size.height = rect->size.height * scale_y;
/* Normalize in place */
if (out_rect->size.width < 0.f)
{
float size = fabsf (out_rect->size.width);
out_rect->origin.x -= size;
out_rect->size.width = size;
}
if (out_rect->size.height < 0.f)
{
float size = fabsf (out_rect->size.height);
out_rect->origin.y -= size;
out_rect->size.height = size;
}
}
else
{
graphene_rect_t r;
r.origin.x = rect->origin.x + job->offset_x;
r.origin.y = rect->origin.y + job->offset_y;
r.size.width = rect->size.width;
r.size.height = rect->size.height;
gsk_transform_transform_bounds (transform, &r, out_rect);
}
}
static inline void
gsk_gl_render_job_transform_rounded_rect (GskGLRenderJob *job,
const GskRoundedRect *rect,
GskRoundedRect *out_rect)
{
out_rect->bounds.origin.x = job->offset_x + rect->bounds.origin.x;
out_rect->bounds.origin.y = job->offset_y + rect->bounds.origin.y;
out_rect->bounds.size.width = rect->bounds.size.width;
out_rect->bounds.size.height = rect->bounds.size.height;
memcpy (out_rect->corner, rect->corner, sizeof rect->corner);
}
static inline void
rounded_rect_get_inner (const GskRoundedRect *rect,
graphene_rect_t *inner)
{
float left = MAX (rect->corner[GSK_CORNER_TOP_LEFT].width, rect->corner[GSK_CORNER_BOTTOM_LEFT].width);
float right = MAX (rect->corner[GSK_CORNER_TOP_RIGHT].width, rect->corner[GSK_CORNER_BOTTOM_RIGHT].width);
float top = MAX (rect->corner[GSK_CORNER_TOP_LEFT].height, rect->corner[GSK_CORNER_TOP_RIGHT].height);
float bottom = MAX (rect->corner[GSK_CORNER_BOTTOM_LEFT].height, rect->corner[GSK_CORNER_BOTTOM_RIGHT].height);
inner->origin.x = rect->bounds.origin.x + left;
inner->size.width = rect->bounds.size.width - (left + right);
inner->origin.y = rect->bounds.origin.y + top;
inner->size.height = rect->bounds.size.height - (top + bottom);
}
static inline gboolean
interval_contains (float p1, float w1,
float p2, float w2)
{
if (p2 < p1)
return FALSE;
if (p2 + w2 > p1 + w1)
return FALSE;
return TRUE;
}
static inline gboolean
gsk_gl_render_job_update_clip (GskGLRenderJob *job,
const graphene_rect_t *bounds,
gboolean *pushed_clip)
{
graphene_rect_t transformed_bounds;
gboolean no_clip = FALSE;
gboolean rect_clip = FALSE;
*pushed_clip = FALSE;
if (job->current_clip->is_fully_contained)
{
/* Already fully contained - no further checks needed */
return TRUE;
}
gsk_gl_render_job_transform_bounds (job, bounds, &transformed_bounds);
if (!rect_intersects (&job->current_clip->rect.bounds, &transformed_bounds))
{
/* Completely clipped away */
return FALSE;
}
if (job->current_clip->is_rectilinear)
{
if (rect_contains_rect (&job->current_clip->rect.bounds, &transformed_bounds))
no_clip = TRUE;
else
rect_clip = TRUE;
}
else if (gsk_rounded_rect_contains_rect (&job->current_clip->rect, &transformed_bounds))
{
no_clip = TRUE;
}
else
{
graphene_rect_t inner;
rounded_rect_get_inner (&job->current_clip->rect, &inner);
if (interval_contains (inner.origin.x, inner.size.width,
transformed_bounds.origin.x, transformed_bounds.size.width) ||
interval_contains (inner.origin.y, inner.size.height,
transformed_bounds.origin.y, transformed_bounds.size.height))
rect_clip = TRUE;
}
if (no_clip)
{
/* This node is completely contained inside the clip.
* Record this fact on the clip stack, so we don't do more work
* for child nodes.
*/
gsk_gl_render_job_push_contained_clip (job);
*pushed_clip = TRUE;
}
else if (rect_clip && !job->current_clip->is_rectilinear)
{
graphene_rect_t rect;
/* The clip gets simpler for this node */
graphene_rect_intersection (&job->current_clip->rect.bounds, &transformed_bounds, &rect);
gsk_gl_render_job_push_clip (job, &GSK_ROUNDED_RECT_INIT_FROM_RECT (rect));
*pushed_clip = TRUE;
}
return TRUE;
}
static inline void
rgba_to_half (const GdkRGBA *rgba,
guint16 h[4])
{
float_to_half4 ((const float *)rgba, h);
}
/* fill_vertex_data */
static void
gsk_gl_render_job_draw_coords (GskGLRenderJob *job,
float min_x,
float min_y,
float max_x,
float max_y,
float min_u,
float min_v,
float max_u,
float max_v,
guint16 c[4])
{
GskGLDrawVertex *vertices = gsk_gl_command_queue_add_vertices (job->command_queue);
vertices[0] = (GskGLDrawVertex) { .position = { min_x, min_y }, .uv = { min_u, min_v }, .color = { c[0], c[1], c[2], c[3] } };
vertices[1] = (GskGLDrawVertex) { .position = { min_x, max_y }, .uv = { min_u, max_v }, .color = { c[0], c[1], c[2], c[3] } };
vertices[2] = (GskGLDrawVertex) { .position = { max_x, min_y }, .uv = { max_u, min_v }, .color = { c[0], c[1], c[2], c[3] } };
vertices[3] = (GskGLDrawVertex) { .position = { max_x, max_y }, .uv = { max_u, max_v }, .color = { c[0], c[1], c[2], c[3] } };
vertices[4] = (GskGLDrawVertex) { .position = { min_x, max_y }, .uv = { min_u, max_v }, .color = { c[0], c[1], c[2], c[3] } };
vertices[5] = (GskGLDrawVertex) { .position = { max_x, min_y }, .uv = { max_u, min_v }, .color = { c[0], c[1], c[2], c[3] } };
}
/* load_vertex_data_with_region */
static inline void
gsk_gl_render_job_draw_offscreen_with_color (GskGLRenderJob *job,
const graphene_rect_t *bounds,
const GskGLRenderOffscreen *offscreen,
guint16 color[4])
{
float min_x = job->offset_x + bounds->origin.x;
float min_y = job->offset_y + bounds->origin.y;
float max_x = min_x + bounds->size.width;
float max_y = min_y + bounds->size.height;
float y1 = offscreen->was_offscreen ? offscreen->area.y2 : offscreen->area.y;
float y2 = offscreen->was_offscreen ? offscreen->area.y : offscreen->area.y2;
gsk_gl_render_job_draw_coords (job,
min_x, min_y, max_x, max_y,
offscreen->area.x, y1, offscreen->area.x2, y2,
color);
}
static inline void
gsk_gl_render_job_draw_offscreen (GskGLRenderJob *job,
const graphene_rect_t *bounds,
const GskGLRenderOffscreen *offscreen)
{
gsk_gl_render_job_draw_offscreen_with_color (job, bounds, offscreen,
(guint16[]) { FP16_ZERO, FP16_ZERO, FP16_ZERO, FP16_ZERO });
}
/* load_float_vertex_data */
static inline void
gsk_gl_render_job_draw_with_color (GskGLRenderJob *job,
float x,
float y,
float width,
float height,
guint16 color[4])
{
float min_x = job->offset_x + x;
float min_y = job->offset_y + y;
float max_x = min_x + width;
float max_y = min_y + height;
gsk_gl_render_job_draw_coords (job, min_x, min_y, max_x, max_y, 0, 0, 1, 1, color);
}
static inline void
gsk_gl_render_job_draw (GskGLRenderJob *job,
float x,
float y,
float width,
float height)
{
gsk_gl_render_job_draw_with_color (job, x, y, width, height,
(guint16[]) { FP_ZERO, FP_ZERO, FP_ZERO, FP_ZERO });
}
/* load_vertex_data */
static inline void
gsk_gl_render_job_draw_rect_with_color (GskGLRenderJob *job,
const graphene_rect_t *bounds,
guint16 color[4])
{
gsk_gl_render_job_draw_with_color (job,
bounds->origin.x,
bounds->origin.y,
bounds->size.width,
bounds->size.height,
color);
}
static inline void
gsk_gl_render_job_draw_rect (GskGLRenderJob *job,
const graphene_rect_t *bounds)
{
gsk_gl_render_job_draw (job,
bounds->origin.x,
bounds->origin.y,
bounds->size.width,
bounds->size.height);
}
/* load_offscreen_vertex_data */
static inline void
gsk_gl_render_job_draw_offscreen_rect (GskGLRenderJob *job,
const graphene_rect_t *bounds)
{
float min_x = job->offset_x + bounds->origin.x;
float min_y = job->offset_y + bounds->origin.y;
float max_x = min_x + bounds->size.width;
float max_y = min_y + bounds->size.height;
guint16 color[4] = { FP16_ZERO, FP16_ZERO, FP16_ZERO, FP16_ZERO };
gsk_gl_render_job_draw_coords (job,
min_x, min_y, max_x, max_y,
0, 1, 1, 0,
color);
}
static inline void
gsk_gl_render_job_begin_draw (GskGLRenderJob *job,
GskGLProgram *program)
{
job->current_program = program;
gsk_gl_command_queue_begin_draw (job->command_queue,
program->program_info,
job->viewport.size.width,
job->viewport.size.height);
gsk_gl_uniform_state_set4fv (program->uniforms,
program->program_info,
UNIFORM_SHARED_VIEWPORT,
job->driver->stamps[UNIFORM_SHARED_VIEWPORT],
1,
(const float *)&job->viewport);
gsk_gl_uniform_state_set_matrix (program->uniforms,
program->program_info,
UNIFORM_SHARED_MODELVIEW,
job->driver->stamps[UNIFORM_SHARED_MODELVIEW],
&job->current_modelview->matrix);
gsk_gl_uniform_state_set_matrix (program->uniforms,
program->program_info,
UNIFORM_SHARED_PROJECTION,
job->driver->stamps[UNIFORM_SHARED_PROJECTION],
&job->projection);
gsk_gl_uniform_state_set_rounded_rect (program->uniforms,
program->program_info,
UNIFORM_SHARED_CLIP_RECT,
job->driver->stamps[UNIFORM_SHARED_CLIP_RECT],
&job->current_clip->rect);
gsk_gl_uniform_state_set1f (program->uniforms,
program->program_info,
UNIFORM_SHARED_ALPHA,
job->driver->stamps[UNIFORM_SHARED_ALPHA],
job->alpha);
}
#define CHOOSE_PROGRAM(job,name) \
(job->current_clip->is_fully_contained \
? job->driver->name ## _no_clip \
: (job->current_clip->is_rectilinear \
? job->driver->name ## _rect_clip \
: job->driver->name))
static inline void
gsk_gl_render_job_split_draw (GskGLRenderJob *job)
{
gsk_gl_command_queue_split_draw (job->command_queue);
}
static inline void
gsk_gl_render_job_end_draw (GskGLRenderJob *job)
{
gsk_gl_command_queue_end_draw (job->command_queue);
job->current_program = NULL;
}
static inline void
gsk_gl_render_job_visit_as_fallback (GskGLRenderJob *job,
const GskRenderNode *node)
{
float scale_x = job->scale_x;
float scale_y = job->scale_y;
int surface_width = ceilf (node->bounds.size.width * scale_x);
int surface_height = ceilf (node->bounds.size.height * scale_y);
GdkTexture *texture;
cairo_surface_t *surface;
cairo_surface_t *rendered_surface;
cairo_t *cr;
int cached_id;
int texture_id;
GskTextureKey key;
if (surface_width <= 0 || surface_height <= 0)
return;
key.pointer = node;
key.pointer_is_child = FALSE;
key.scale_x = scale_x;
key.scale_y = scale_y;
key.filter = GL_NEAREST;
cached_id = gsk_gl_driver_lookup_texture (job->driver, &key);
if (cached_id != 0)
{
gsk_gl_render_job_begin_draw (job, CHOOSE_PROGRAM (job, blit));
gsk_gl_program_set_uniform_texture (job->current_program,
UNIFORM_SHARED_SOURCE, 0,
GL_TEXTURE_2D, GL_TEXTURE0, cached_id);
gsk_gl_render_job_draw_offscreen_rect (job, &node->bounds);
gsk_gl_render_job_end_draw (job);
return;
}
/* We first draw the recording surface on an image surface,
* just because the scaleY(-1) later otherwise screws up the
* rendering... */
{
rendered_surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
surface_width,
surface_height);
cairo_surface_set_device_scale (rendered_surface, scale_x, scale_y);
cr = cairo_create (rendered_surface);
cairo_save (cr);
cairo_translate (cr, - floorf (node->bounds.origin.x), - floorf (node->bounds.origin.y));
/* Render nodes don't modify state, so casting away the const is fine here */
gsk_render_node_draw ((GskRenderNode *)node, cr);
cairo_restore (cr);
cairo_destroy (cr);
}
surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
surface_width,
surface_height);
cairo_surface_set_device_scale (surface, scale_x, scale_y);
cr = cairo_create (surface);
/* We draw upside down here, so it matches what GL does. */
cairo_save (cr);
cairo_scale (cr, 1, -1);
cairo_translate (cr, 0, - surface_height / scale_y);
cairo_set_source_surface (cr, rendered_surface, 0, 0);
cairo_rectangle (cr, 0, 0, surface_width / scale_x, surface_height / scale_y);
cairo_fill (cr);
cairo_restore (cr);
#ifdef G_ENABLE_DEBUG
if (job->debug_fallback)
{
cairo_move_to (cr, 0, 0);
cairo_rectangle (cr, 0, 0, node->bounds.size.width, node->bounds.size.height);
if (gsk_render_node_get_node_type (node) == GSK_CAIRO_NODE)
cairo_set_source_rgba (cr, 0.3, 0, 1, 0.25);
else
cairo_set_source_rgba (cr, 1, 0, 0, 0.25);
cairo_fill_preserve (cr);
if (gsk_render_node_get_node_type (node) == GSK_CAIRO_NODE)
cairo_set_source_rgba (cr, 0.3, 0, 1, 1);
else
cairo_set_source_rgba (cr, 1, 0, 0, 1);
cairo_stroke (cr);
}
#endif
cairo_destroy (cr);
/* Create texture to upload */
texture = gdk_texture_new_for_surface (surface);
texture_id = gsk_gl_driver_load_texture (job->driver, texture,
GL_NEAREST, GL_NEAREST);
if (gdk_gl_context_has_debug (job->command_queue->context))
gdk_gl_context_label_object_printf (job->command_queue->context, GL_TEXTURE, texture_id,
"Fallback %s %d",
g_type_name_from_instance ((GTypeInstance *) node),
texture_id);
g_object_unref (texture);
cairo_surface_destroy (surface);
cairo_surface_destroy (rendered_surface);
gsk_gl_driver_cache_texture (job->driver, &key, texture_id);
gsk_gl_render_job_begin_draw (job, CHOOSE_PROGRAM (job, blit));
gsk_gl_program_set_uniform_texture (job->current_program,
UNIFORM_SHARED_SOURCE, 0,
GL_TEXTURE_2D,
GL_TEXTURE0,
texture_id);
gsk_gl_render_job_draw_offscreen_rect (job, &node->bounds);
gsk_gl_render_job_end_draw (job);
}
static guint
blur_offscreen (GskGLRenderJob *job,
GskGLRenderOffscreen *offscreen,
int texture_to_blur_width,
int texture_to_blur_height,
float blur_radius_x,
float blur_radius_y)
{
const GskRoundedRect new_clip = GSK_ROUNDED_RECT_INIT (0, 0, texture_to_blur_width, texture_to_blur_height);
GskGLRenderTarget *pass1;
GskGLRenderTarget *pass2;
graphene_matrix_t prev_projection;
graphene_rect_t prev_viewport;
guint prev_fbo;
g_assert (blur_radius_x > 0);
g_assert (blur_radius_y > 0);
g_assert (offscreen->texture_id > 0);
g_assert (offscreen->area.x2 > offscreen->area.x);
g_assert (offscreen->area.y2 > offscreen->area.y);
if (!gsk_gl_driver_create_render_target (job->driver,
MAX (texture_to_blur_width, 1),
MAX (texture_to_blur_height, 1),
job->target_format,
GL_NEAREST, GL_NEAREST,
&pass1))
return 0;
if (texture_to_blur_width <= 0 || texture_to_blur_height <= 0)
return gsk_gl_driver_release_render_target (job->driver, pass1, FALSE);
if (!gsk_gl_driver_create_render_target (job->driver,
texture_to_blur_width,
texture_to_blur_height,
job->target_format,
GL_NEAREST, GL_NEAREST,
&pass2))
return gsk_gl_driver_release_render_target (job->driver, pass1, FALSE);
gsk_gl_render_job_set_viewport (job, &new_clip.bounds, &prev_viewport);
gsk_gl_render_job_set_projection_from_rect (job, &new_clip.bounds, &prev_projection);
gsk_gl_render_job_set_modelview (job, NULL);
gsk_gl_render_job_push_clip (job, &new_clip);
/* Bind new framebuffer and clear it */
prev_fbo = gsk_gl_command_queue_bind_framebuffer (job->command_queue, pass1->framebuffer_id);
gsk_gl_command_queue_clear (job->command_queue, 0, &job->viewport);
/* Begin drawing the first horizontal pass, using offscreen as the
* source texture for the program.
*/
gsk_gl_render_job_begin_draw (job, CHOOSE_PROGRAM (job, blur));
gsk_gl_program_set_uniform_texture (job->current_program,
UNIFORM_SHARED_SOURCE, 0,
GL_TEXTURE_2D,
GL_TEXTURE0,
offscreen->texture_id);
gsk_gl_program_set_uniform1f (job->current_program,
UNIFORM_BLUR_RADIUS, 0,
blur_radius_x);
gsk_gl_program_set_uniform2f (job->current_program,
UNIFORM_BLUR_SIZE, 0,
texture_to_blur_width,
texture_to_blur_height);
gsk_gl_program_set_uniform2f (job->current_program,
UNIFORM_BLUR_DIR, 0,
1, 0);
gsk_gl_render_job_draw_coords (job,
0, 0, texture_to_blur_width, texture_to_blur_height,
0, 1, 1, 0,
(guint16[]) { FP16_ZERO, FP16_ZERO, FP16_ZERO, FP16_ZERO });
gsk_gl_render_job_end_draw (job);
/* Bind second pass framebuffer and clear it */
gsk_gl_command_queue_bind_framebuffer (job->command_queue, pass2->framebuffer_id);
gsk_gl_command_queue_clear (job->command_queue, 0, &job->viewport);
/* Draw using blur program with first pass as source texture */
gsk_gl_render_job_begin_draw (job, CHOOSE_PROGRAM (job, blur));
gsk_gl_program_set_uniform_texture (job->current_program,
UNIFORM_SHARED_SOURCE, 0,
GL_TEXTURE_2D,
GL_TEXTURE0,
pass1->texture_id);
gsk_gl_program_set_uniform1f (job->current_program,
UNIFORM_BLUR_RADIUS, 0,
blur_radius_y);
gsk_gl_program_set_uniform2f (job->current_program,
UNIFORM_BLUR_SIZE, 0,
texture_to_blur_width,
texture_to_blur_height);
gsk_gl_program_set_uniform2f (job->current_program,
UNIFORM_BLUR_DIR, 0,
0, 1);
gsk_gl_render_job_draw_coords (job,
0, 0, texture_to_blur_width, texture_to_blur_height,
0, 1, 1, 0,
(guint16[]) { FP16_ZERO, FP16_ZERO, FP16_ZERO, FP16_ZERO });
gsk_gl_render_job_end_draw (job);
gsk_gl_render_job_pop_modelview (job);
gsk_gl_render_job_pop_clip (job);
gsk_gl_render_job_set_viewport (job, &prev_viewport, NULL);
gsk_gl_render_job_set_projection (job, &prev_projection);
gsk_gl_command_queue_bind_framebuffer (job->command_queue, prev_fbo);
gsk_gl_driver_release_render_target (job->driver, pass1, TRUE);
return gsk_gl_driver_release_render_target (job->driver, pass2, FALSE);
}
static void
blur_node (GskGLRenderJob *job,
GskGLRenderOffscreen *offscreen,
const GskRenderNode *node,
float blur_radius,
float *min_x,
float *max_x,
float *min_y,
float *max_y)
{
const float blur_extra = blur_radius * 2.0; /* 2.0 = shader radius_multiplier */
const float half_blur_extra = (blur_extra / 2.0);
float scale_x = job->scale_x;
float scale_y = job->scale_y;
float texture_width;
float texture_height;
g_assert (blur_radius > 0);
/* Increase texture size for the given blur radius and scale it */
texture_width = ceilf ((node->bounds.size.width + blur_extra));
texture_height = ceilf ((node->bounds.size.height + blur_extra));
/* Only blur this if the out region has no texture id yet */
if (offscreen->texture_id == 0)
{
const graphene_rect_t bounds = GRAPHENE_RECT_INIT (node->bounds.origin.x - half_blur_extra,
node->bounds.origin.y - half_blur_extra,
texture_width, texture_height);
offscreen->bounds = &bounds;
offscreen->reset_clip = TRUE;
offscreen->force_offscreen = TRUE;
if (!gsk_gl_render_job_visit_node_with_offscreen (job, node, offscreen))
g_assert_not_reached ();
/* Ensure that we actually got a real texture_id */
g_assert (offscreen->texture_id != 0);
offscreen->texture_id = blur_offscreen (job,
offscreen,
texture_width * scale_x,
texture_height * scale_y,
blur_radius * scale_x,
blur_radius * scale_y);
init_full_texture_region (offscreen);
}
*min_x = job->offset_x + node->bounds.origin.x - half_blur_extra;
*max_x = job->offset_x + node->bounds.origin.x + node->bounds.size.width + half_blur_extra;
*min_y = job->offset_y + node->bounds.origin.y - half_blur_extra;
*max_y = job->offset_y + node->bounds.origin.y + node->bounds.size.height + half_blur_extra;
}
#define ATLAS_SIZE 512
static inline void
gsk_gl_render_job_visit_color_node (GskGLRenderJob *job,
const GskRenderNode *node)
{
const GdkRGBA *rgba;
guint16 color[4];
GskGLProgram *program;
GskGLCommandBatch *batch;
rgba = gsk_color_node_get_color (node);
if (RGBA_IS_CLEAR (rgba))
return;
rgba_to_half (rgba, color);
/* Avoid switching away from the coloring program for
* rendering a solid color.
*/
program = CHOOSE_PROGRAM (job, coloring);
batch = gsk_gl_command_queue_get_batch (job->command_queue);
/* Limit the size, or we end up with a coordinate overflow somwhere. */
if (node->bounds.size.width < 300 &&
node->bounds.size.height < 300 &&
batch->any.kind == GSK_GL_COMMAND_KIND_DRAW &&
batch->any.program == program->id)
{
GskGLRenderOffscreen offscreen = {0};
gsk_gl_render_job_begin_draw (job, program);
/* The top left few pixels in our atlases are always
* solid white, so we can use it here, without
* having to choose any particular atlas texture.
*/
offscreen.was_offscreen = FALSE;
offscreen.area.x = 1.f / ATLAS_SIZE;
offscreen.area.y = 1.f / ATLAS_SIZE;
offscreen.area.x2 = 2.f / ATLAS_SIZE;
offscreen.area.y2 = 2.f / ATLAS_SIZE;
gsk_gl_render_job_draw_offscreen_with_color (job,
&node->bounds,
&offscreen,
color);
gsk_gl_render_job_end_draw (job);
}
else
{
gsk_gl_render_job_begin_draw (job, CHOOSE_PROGRAM (job, color));
gsk_gl_render_job_draw_rect_with_color (job, &node->bounds, color);
gsk_gl_render_job_end_draw (job);
}
}
static inline void
gsk_gl_render_job_visit_linear_gradient_node (GskGLRenderJob *job,
const GskRenderNode *node)
{
const GskColorStop *stops = gsk_linear_gradient_node_get_color_stops (node, NULL);
const graphene_point_t *start = gsk_linear_gradient_node_get_start (node);
const graphene_point_t *end = gsk_linear_gradient_node_get_end (node);
int n_color_stops = gsk_linear_gradient_node_get_n_color_stops (node);
gboolean repeat = gsk_render_node_get_node_type (node) == GSK_REPEATING_LINEAR_GRADIENT_NODE;
float x1 = job->offset_x + start->x;
float x2 = job->offset_x + end->x;
float y1 = job->offset_y + start->y;
float y2 = job->offset_y + end->y;
g_assert (n_color_stops < MAX_GRADIENT_STOPS);
gsk_gl_render_job_begin_draw (job, CHOOSE_PROGRAM (job, linear_gradient));
gsk_gl_program_set_uniform1i (job->current_program,
UNIFORM_LINEAR_GRADIENT_NUM_COLOR_STOPS, 0,
n_color_stops);
gsk_gl_program_set_uniform1fv (job->current_program,
UNIFORM_LINEAR_GRADIENT_COLOR_STOPS, 0,
n_color_stops * 5,
(const float *)stops);
gsk_gl_program_set_uniform4f (job->current_program,
UNIFORM_LINEAR_GRADIENT_POINTS, 0,
x1, y1, x2 - x1, y2 - y1);
gsk_gl_program_set_uniform1i (job->current_program,
UNIFORM_LINEAR_GRADIENT_REPEAT, 0,
repeat);
gsk_gl_render_job_draw_rect (job, &node->bounds);
gsk_gl_render_job_end_draw (job);
}
static inline void
gsk_gl_render_job_visit_conic_gradient_node (GskGLRenderJob *job,
const GskRenderNode *node)
{
static const float scale = 0.5f * M_1_PI;
const GskColorStop *stops = gsk_conic_gradient_node_get_color_stops (node, NULL);
const graphene_point_t *center = gsk_conic_gradient_node_get_center (node);
int n_color_stops = gsk_conic_gradient_node_get_n_color_stops (node);
float angle = gsk_conic_gradient_node_get_angle (node);
float bias = angle * scale + 2.0f;
g_assert (n_color_stops < MAX_GRADIENT_STOPS);
gsk_gl_render_job_begin_draw (job, CHOOSE_PROGRAM (job, conic_gradient));
gsk_gl_program_set_uniform1i (job->current_program,
UNIFORM_CONIC_GRADIENT_NUM_COLOR_STOPS, 0,
n_color_stops);
gsk_gl_program_set_uniform1fv (job->current_program,
UNIFORM_CONIC_GRADIENT_COLOR_STOPS, 0,
n_color_stops * 5,
(const float *)stops);
gsk_gl_program_set_uniform4f (job->current_program,
UNIFORM_CONIC_GRADIENT_GEOMETRY, 0,
job->offset_x + center->x,
job->offset_y + center->y,
scale,
bias);
gsk_gl_render_job_draw_rect (job, &node->bounds);
gsk_gl_render_job_end_draw (job);
}
static inline void
gsk_gl_render_job_visit_radial_gradient_node (GskGLRenderJob *job,
const GskRenderNode *node)
{
int n_color_stops = gsk_radial_gradient_node_get_n_color_stops (node);
const GskColorStop *stops = gsk_radial_gradient_node_get_color_stops (node, NULL);
const graphene_point_t *center = gsk_radial_gradient_node_get_center (node);
float start = gsk_radial_gradient_node_get_start (node);
float end = gsk_radial_gradient_node_get_end (node);
float hradius = gsk_radial_gradient_node_get_hradius (node);
float vradius = gsk_radial_gradient_node_get_vradius (node);
gboolean repeat = gsk_render_node_get_node_type (node) == GSK_REPEATING_RADIAL_GRADIENT_NODE;
float scale = 1.0f / (end - start);
float bias = -start * scale;
g_assert (n_color_stops < MAX_GRADIENT_STOPS);
gsk_gl_render_job_begin_draw (job, CHOOSE_PROGRAM (job, radial_gradient));
gsk_gl_program_set_uniform1i (job->current_program,
UNIFORM_RADIAL_GRADIENT_NUM_COLOR_STOPS, 0,
n_color_stops);
gsk_gl_program_set_uniform1fv (job->current_program,
UNIFORM_RADIAL_GRADIENT_COLOR_STOPS, 0,
n_color_stops * 5,
(const float *)stops);
gsk_gl_program_set_uniform1i (job->current_program,
UNIFORM_RADIAL_GRADIENT_REPEAT, 0,
repeat);
gsk_gl_program_set_uniform2f (job->current_program,
UNIFORM_RADIAL_GRADIENT_RANGE, 0,
scale, bias);
gsk_gl_program_set_uniform4f (job->current_program,
UNIFORM_RADIAL_GRADIENT_GEOMETRY, 0,
job->offset_x + center->x,
job->offset_y + center->y,
1.0f / (hradius * job->scale_x),
1.0f / (vradius * job->scale_y));
gsk_gl_render_job_draw_rect (job, &node->bounds);
gsk_gl_render_job_end_draw (job);
}
static inline void
gsk_gl_render_job_visit_clipped_child (GskGLRenderJob *job,
const GskRenderNode *child,
const graphene_rect_t *clip)
{
graphene_rect_t transformed_clip;
GskRoundedRect intersection;
gsk_gl_render_job_transform_bounds (job, clip, &transformed_clip);
if (job->current_clip->is_rectilinear)
{
memset (&intersection.corner, 0, sizeof intersection.corner);
graphene_rect_intersection (&transformed_clip,
&job->current_clip->rect.bounds,
&intersection.bounds);
gsk_gl_render_job_push_clip (job, &intersection);
gsk_gl_render_job_visit_node (job, child);
gsk_gl_render_job_pop_clip (job);
}
else if (intersect_rounded_rectilinear (&transformed_clip,
&job->current_clip->rect,
&intersection))
{
gsk_gl_render_job_push_clip (job, &intersection);
gsk_gl_render_job_visit_node (job, child);
gsk_gl_render_job_pop_clip (job);
}
else
{
GskGLRenderOffscreen offscreen = {0};
offscreen.bounds = clip;
offscreen.force_offscreen = TRUE;
offscreen.reset_clip = TRUE;
offscreen.do_not_cache = TRUE;
gsk_gl_render_job_visit_node_with_offscreen (job, child, &offscreen);
g_assert (offscreen.texture_id);
gsk_gl_render_job_begin_draw (job, CHOOSE_PROGRAM (job, blit));
gsk_gl_program_set_uniform_texture (job->current_program,
UNIFORM_SHARED_SOURCE, 0,
GL_TEXTURE_2D,
GL_TEXTURE0,
offscreen.texture_id);
gsk_gl_render_job_draw_offscreen_rect (job, clip);
gsk_gl_render_job_end_draw (job);
}
}
static inline void
gsk_gl_render_job_visit_clip_node (GskGLRenderJob *job,
const GskRenderNode *node)
{
const graphene_rect_t *clip = gsk_clip_node_get_clip (node);
const GskRenderNode *child = gsk_clip_node_get_child (node);
gsk_gl_render_job_visit_clipped_child (job, child, clip);
}
static inline void
gsk_gl_render_job_visit_rounded_clip_node (GskGLRenderJob *job,
const GskRenderNode *node)
{
const GskRenderNode *child = gsk_rounded_clip_node_get_child (node);
const GskRoundedRect *clip = gsk_rounded_clip_node_get_clip (node);
GskRoundedRect transformed_clip;
float scale_x = job->scale_x;
float scale_y = job->scale_y;
gboolean need_offscreen;
if (node_is_invisible (child))
return;
gsk_gl_render_job_transform_bounds (job, &clip->bounds, &transformed_clip.bounds);
for (guint i = 0; i < G_N_ELEMENTS (transformed_clip.corner); i++)
{
transformed_clip.corner[i].width = clip->corner[i].width * scale_x;
transformed_clip.corner[i].height = clip->corner[i].height * scale_y;
}
if (job->current_clip->is_rectilinear)
{
GskRoundedRect intersected_clip;
if (intersect_rounded_rectilinear (&job->current_clip->rect.bounds,
&transformed_clip,
&intersected_clip))
{
gsk_gl_render_job_push_clip (job, &intersected_clip);
gsk_gl_render_job_visit_node (job, child);
gsk_gl_render_job_pop_clip (job);
return;
}
}
/* After this point we are really working with a new and a current clip
* which both have rounded corners.
*/
if (job->clip->len <= 1)
need_offscreen = FALSE;
else if (rounded_inner_rect_contains_rect (&job->current_clip->rect, &transformed_clip.bounds))
need_offscreen = FALSE;
else
need_offscreen = TRUE;
if (!need_offscreen)
{
/* If the new clip entirely contains the current clip, the intersection is simply
* the current clip, so we can ignore the new one.
*/
if (rounded_inner_rect_contains_rect (&transformed_clip, &job->current_clip->rect.bounds))
{
gsk_gl_render_job_visit_node (job, child);
return;
}
gsk_gl_render_job_push_clip (job, &transformed_clip);
gsk_gl_render_job_visit_node (job, child);
gsk_gl_render_job_pop_clip (job);
}
else
{
GskGLRenderOffscreen offscreen = {0};
offscreen.bounds = &node->bounds;
offscreen.force_offscreen = TRUE;
offscreen.reset_clip = FALSE;
gsk_gl_render_job_push_clip (job, &transformed_clip);
if (!gsk_gl_render_job_visit_node_with_offscreen (job, child, &offscreen))
g_assert_not_reached ();
gsk_gl_render_job_pop_clip (job);
g_assert (offscreen.texture_id);
gsk_gl_render_job_begin_draw (job, CHOOSE_PROGRAM (job, blit));
gsk_gl_program_set_uniform_texture (job->current_program,
UNIFORM_SHARED_SOURCE, 0,
GL_TEXTURE_2D,
GL_TEXTURE0,
offscreen.texture_id);
gsk_gl_render_job_draw_offscreen (job, &node->bounds, &offscreen);
gsk_gl_render_job_end_draw (job);
}
}
static inline void
gsk_gl_render_job_visit_rect_border_node (GskGLRenderJob *job,
const GskRenderNode *node)
{
const GdkRGBA *colors = gsk_border_node_get_colors (node);
const float *widths = gsk_border_node_get_widths (node);
const graphene_point_t *origin = &node->bounds.origin;
const graphene_size_t *size = &node->bounds.size;
guint16 color[4];
gsk_gl_render_job_begin_draw (job, CHOOSE_PROGRAM (job, color));
if (widths[0] > 0)
{
rgba_to_half (&colors[0], color);
gsk_gl_render_job_draw_rect_with_color (job,
&GRAPHENE_RECT_INIT (origin->x, origin->y, size->width - widths[1], widths[0]),
color);
}
if (widths[1] > 0)
{
rgba_to_half (&colors[1], color);
gsk_gl_render_job_draw_rect_with_color (job,
&GRAPHENE_RECT_INIT (origin->x + size->width - widths[1], origin->y, widths[1], size->height - widths[2]),
color);
}
if (widths[2] > 0)
{
rgba_to_half (&colors[2], color);
gsk_gl_render_job_draw_rect_with_color (job,
&GRAPHENE_RECT_INIT (origin->x + widths[3], origin->y + size->height - widths[2], size->width - widths[3], widths[2]),
color);
}
if (widths[3] > 0)
{
rgba_to_half (&colors[3], color);
gsk_gl_render_job_draw_rect_with_color (job,
&GRAPHENE_RECT_INIT (origin->x, origin->y + widths[0], widths[3], size->height - widths[0]),
color);
}
gsk_gl_render_job_end_draw (job);
}
static inline void
gsk_gl_render_job_visit_border_node (GskGLRenderJob *job,
const GskRenderNode *node)
{
const GskRoundedRect *rounded_outline = gsk_border_node_get_outline (node);
const GdkRGBA *colors = gsk_border_node_get_colors (node);
const float *widths = gsk_border_node_get_widths (node);
struct {
float w;
float h;
} sizes[4];
float min_x = job->offset_x + node->bounds.origin.x;
float min_y = job->offset_y + node->bounds.origin.y;
float max_x = min_x + node->bounds.size.width;
float max_y = min_y + node->bounds.size.height;
GskRoundedRect outline;
guint16 color[4];
memset (sizes, 0, sizeof sizes);
if (widths[0] > 0)
{
sizes[0].h = MAX (widths[0], rounded_outline->corner[0].height);
sizes[1].h = MAX (widths[0], rounded_outline->corner[1].height);
}
if (widths[1] > 0)
{
sizes[1].w = MAX (widths[1], rounded_outline->corner[1].width);
sizes[2].w = MAX (widths[1], rounded_outline->corner[2].width);
}
if (widths[2] > 0)
{
sizes[2].h = MAX (widths[2], rounded_outline->corner[2].height);
sizes[3].h = MAX (widths[2], rounded_outline->corner[3].height);
}
if (widths[3] > 0)
{
sizes[0].w = MAX (widths[3], rounded_outline->corner[0].width);
sizes[3].w = MAX (widths[3], rounded_outline->corner[3].width);
}
gsk_gl_render_job_transform_rounded_rect (job, rounded_outline, &outline);
gsk_gl_render_job_begin_draw (job, CHOOSE_PROGRAM (job, border));
gsk_gl_program_set_uniform4fv (job->current_program,
UNIFORM_BORDER_WIDTHS, 0,
1,
widths);
gsk_gl_program_set_uniform_rounded_rect (job->current_program,
UNIFORM_BORDER_OUTLINE_RECT, 0,
&outline);
if (widths[0] > 0)
{
GskGLDrawVertex *vertices = gsk_gl_command_queue_add_vertices (job->command_queue);
rgba_to_half (&colors[0], color);
vertices[0] = (GskGLDrawVertex) { .position = { min_x, min_y }, .uv = { 0, 1 }, .color = { color[0], color[1], color[2], color[3] } };
vertices[1] = (GskGLDrawVertex) { .position = { min_x + sizes[0].w, min_y + sizes[0].h }, .uv = { 0, 0 }, .color = { color[0], color[1], color[2], color[3] } };
vertices[2] = (GskGLDrawVertex) { .position = { max_x, min_y }, .uv = { 1, 1 }, .color = { color[0], color[1], color[2], color[3] } };
vertices[3] = (GskGLDrawVertex) { .position = { max_x - sizes[1].w, min_y + sizes[1].h }, .uv = { 1, 0 }, .color = { color[0], color[1], color[2], color[3] } };
vertices[4] = (GskGLDrawVertex) { .position = { min_x + sizes[0].w, min_y + sizes[0].h }, .uv = { 0, 0 }, .color = { color[0], color[1], color[2], color[3] } };
vertices[5] = (GskGLDrawVertex) { .position = { max_x, min_y }, .uv = { 1, 1 }, .color = { color[0], color[1], color[2], color[3] } };
}
if (widths[1] > 0)
{
GskGLDrawVertex *vertices = gsk_gl_command_queue_add_vertices (job->command_queue);
rgba_to_half (&colors[1], color);
vertices[0] = (GskGLDrawVertex) { .position = { max_x - sizes[1].w, min_y + sizes[1].h }, .uv = { 0, 1 }, .color = { color[0], color[1], color[2], color[3] } };
vertices[1] = (GskGLDrawVertex) { .position = { max_x - sizes[2].w, max_y - sizes[2].h }, .uv = { 0, 0 }, .color = { color[0], color[1], color[2], color[3] } };
vertices[2] = (GskGLDrawVertex) { .position = { max_x, min_y }, .uv = { 1, 1 }, .color = { color[0], color[1], color[2], color[3] } };
vertices[3] = (GskGLDrawVertex) { .position = { max_x, max_y }, .uv = { 1, 0 }, .color = { color[0], color[1], color[2], color[3] } };
vertices[4] = (GskGLDrawVertex) { .position = { max_x - sizes[2].w, max_y - sizes[2].h }, .uv = { 0, 0 }, .color = { color[0], color[1], color[2], color[3] } };
vertices[5] = (GskGLDrawVertex) { .position = { max_x, min_y }, .uv = { 1, 1 }, .color = { color[0], color[1], color[2], color[3] } };
}
if (widths[2] > 0)
{
GskGLDrawVertex *vertices = gsk_gl_command_queue_add_vertices (job->command_queue);
rgba_to_half (&colors[2], color);
vertices[0] = (GskGLDrawVertex) { .position = { min_x + sizes[3].w, max_y - sizes[3].h }, .uv = { 0, 1 }, .color = { color[0], color[1], color[2], color[3] } };
vertices[1] = (GskGLDrawVertex) { .position = { min_x, max_y }, .uv = { 0, 0 }, .color = { color[0], color[1], color[2], color[3] } };
vertices[2] = (GskGLDrawVertex) { .position = { max_x - sizes[2].w, max_y - sizes[2].h }, .uv = { 1, 1 }, .color = { color[0], color[1], color[2], color[3] } };
vertices[3] = (GskGLDrawVertex) { .position = { max_x, max_y }, .uv = { 1, 0 }, .color = { color[0], color[1], color[2], color[3] } };
vertices[4] = (GskGLDrawVertex) { .position = { min_x , max_y }, .uv = { 0, 0 }, .color = { color[0], color[1], color[2], color[3] } };
vertices[5] = (GskGLDrawVertex) { .position = { max_x - sizes[2].w, max_y - sizes[2].h }, .uv = { 1, 1 }, .color = { color[0], color[1], color[2], color[3] } };
}
if (widths[3] > 0)
{
GskGLDrawVertex *vertices = gsk_gl_command_queue_add_vertices (job->command_queue);
rgba_to_half (&colors[3], color);
vertices[0] = (GskGLDrawVertex) { .position = { min_x, min_y }, .uv = { 0, 1 }, .color = { color[0], color[1], color[2], color[3] } };
vertices[1] = (GskGLDrawVertex) { .position = { min_x, max_y }, .uv = { 0, 0 }, .color = { color[0], color[1], color[2], color[3] } };
vertices[2] = (GskGLDrawVertex) { .position = { min_x + sizes[0].w, min_y + sizes[0].h }, .uv = { 1, 1 }, .color = { color[0], color[1], color[2], color[3] } };
vertices[3] = (GskGLDrawVertex) { .position = { min_x + sizes[3].w, max_y - sizes[3].h }, .uv = { 1, 0 }, .color = { color[0], color[1], color[2], color[3] } };
vertices[4] = (GskGLDrawVertex) { .position = { min_x, max_y }, .uv = { 0, 0 }, .color = { color[0], color[1], color[2], color[3] } };
vertices[5] = (GskGLDrawVertex) { .position = { min_x + sizes[0].w, min_y + sizes[0].h }, .uv = { 1, 1 }, .color = { color[0], color[1], color[2], color[3] } };
}
gsk_gl_render_job_end_draw (job);
}
/* A special case for a pattern that occurs frequently with CSS
* backgrounds: two sibling nodes, the first of which is a rounded
* clip node with a color node as child, and the second one is a
* border node, with the same outline as the clip node. We render
* this using the filled_border shader.
*/
static void
gsk_gl_render_job_visit_css_background (GskGLRenderJob *job,
const GskRenderNode *node,
const GskRenderNode *node2)
{
const GskRenderNode *child = gsk_rounded_clip_node_get_child (node);
const GskRoundedRect *rounded_outline = gsk_border_node_get_outline (node2);
const float *widths = gsk_border_node_get_widths (node2);
float min_x = job->offset_x + node2->bounds.origin.x;
float min_y = job->offset_y + node2->bounds.origin.y;
float max_x = min_x + node2->bounds.size.width;
float max_y = min_y + node2->bounds.size.height;
GskRoundedRect outline;
GskGLDrawVertex *vertices;
guint16 color[4];
guint16 color2[4];
if (node_is_invisible (node2))
return;
rgba_to_half (&gsk_border_node_get_colors (node2)[0], color);
rgba_to_half (gsk_color_node_get_color (child), color2);
gsk_gl_render_job_transform_rounded_rect (job, rounded_outline, &outline);
gsk_gl_render_job_begin_draw (job, CHOOSE_PROGRAM (job, filled_border));
gsk_gl_program_set_uniform4fv (job->current_program,
UNIFORM_FILLED_BORDER_WIDTHS, 0,
1,
widths);
gsk_gl_program_set_uniform_rounded_rect (job->current_program,
UNIFORM_FILLED_BORDER_OUTLINE_RECT, 0,
&outline);
vertices = gsk_gl_command_queue_add_vertices (job->command_queue);
vertices[0] = (GskGLDrawVertex) { .position = { min_x, min_y }, .color = { color[0], color[1], color[2], color[3] }, .color2 = { color2[0], color2[1], color2[2], color2[3] } };
vertices[1] = (GskGLDrawVertex) { .position = { min_x, max_y }, .color = { color[0], color[1], color[2], color[3] }, .color2 = { color2[0], color2[1], color2[2], color2[3] } };
vertices[2] = (GskGLDrawVertex) { .position = { max_x, min_y }, .color = { color[0], color[1], color[2], color[3] }, .color2 = { color2[0], color2[1], color2[2], color2[3] } };
vertices[3] = (GskGLDrawVertex) { .position = { max_x, max_y }, .color = { color[0], color[1], color[2], color[3] }, .color2 = { color2[0], color2[1], color2[2], color2[3] } };
vertices[4] = (GskGLDrawVertex) { .position = { min_x, max_y }, .color = { color[0], color[1], color[2], color[3] }, .color2 = { color2[0], color2[1], color2[2], color2[3] } };
vertices[5] = (GskGLDrawVertex) { .position = { max_x, min_y }, .color = { color[0], color[1], color[2], color[3] }, .color2 = { color2[0], color2[1], color2[2], color2[3] } };
gsk_gl_render_job_end_draw (job);
}
/* Returns TRUE if applying @transform to @bounds
* yields an axis-aligned rectangle
*/
static gboolean
result_is_axis_aligned (GskTransform *transform,
const graphene_rect_t *bounds)
{
graphene_matrix_t m;
graphene_quad_t q;
graphene_rect_t b;
graphene_point_t b1, b2;
const graphene_point_t *p;
gsk_transform_to_matrix (transform, &m);
gsk_matrix_transform_rect (&m, bounds, &q);
graphene_quad_bounds (&q, &b);
graphene_rect_get_top_left (&b, &b1);
graphene_rect_get_bottom_right (&b, &b2);
for (guint i = 0; i < 4; i++)
{
p = graphene_quad_get_point (&q, i);
if (fabs (p->x - b1.x) > FLT_EPSILON && fabs (p->x - b2.x) > FLT_EPSILON)
return FALSE;
if (fabs (p->y - b1.y) > FLT_EPSILON && fabs (p->y - b2.y) > FLT_EPSILON)
return FALSE;
}
return TRUE;
}
static inline void
gsk_gl_render_job_visit_transform_node (GskGLRenderJob *job,
const GskRenderNode *node)
{
GskTransform *transform = gsk_transform_node_get_transform (node);
const GskTransformCategory category = gsk_transform_get_category (transform);
const GskRenderNode *child = gsk_transform_node_get_child (node);
switch (category)
{
case GSK_TRANSFORM_CATEGORY_IDENTITY:
gsk_gl_render_job_visit_node (job, child);
break;
case GSK_TRANSFORM_CATEGORY_2D_TRANSLATE:
{
float dx, dy;
gsk_transform_node_get_translate (node, &dx, &dy);
gsk_gl_render_job_offset (job, dx, dy);
gsk_gl_render_job_visit_node (job, child);
gsk_gl_render_job_offset (job, -dx, -dy);
}
break;
case GSK_TRANSFORM_CATEGORY_2D_AFFINE:
{
gsk_gl_render_job_push_modelview (job, transform);
gsk_gl_render_job_visit_node (job, child);
gsk_gl_render_job_pop_modelview (job);
}
break;
case GSK_TRANSFORM_CATEGORY_2D:
if (node_supports_2d_transform (child))
{
gsk_gl_render_job_push_modelview (job, transform);
gsk_gl_render_job_visit_node (job, child);
gsk_gl_render_job_pop_modelview (job);
return;
}
G_GNUC_FALLTHROUGH;
case GSK_TRANSFORM_CATEGORY_3D:
case GSK_TRANSFORM_CATEGORY_ANY:
case GSK_TRANSFORM_CATEGORY_UNKNOWN:
if (node_supports_transform (child))
{
gsk_gl_render_job_push_modelview (job, transform);
gsk_gl_render_job_visit_node (job, child);
gsk_gl_render_job_pop_modelview (job);
}
else
{
GskGLRenderOffscreen offscreen = {0};
float sx = 1, sy = 1;
offscreen.bounds = &child->bounds;
offscreen.force_offscreen = FALSE;
offscreen.reset_clip = TRUE;
if (!result_is_axis_aligned (transform, &child->bounds))
offscreen.linear_filter = TRUE;
if (category == GSK_TRANSFORM_CATEGORY_2D)
{
graphene_matrix_t m;
double a, b, c, d, tx, ty;
g_assert (transform != NULL);
gsk_transform_to_matrix (transform, &m);
if (graphene_matrix_to_2d (&m, &a, &b, &c, &d, &tx, &ty))
{
sx = sqrt (a * a + b * b);
sy = sqrt (c * c + d * d);
}
else
sx = sy = 1;
if (sx != 1 || sy != 1)
{
GskTransform *scale;
scale = gsk_transform_translate (gsk_transform_scale (NULL, sx, sy), &GRAPHENE_POINT_INIT (tx, ty));
gsk_gl_render_job_push_modelview (job, scale);
transform = gsk_transform_transform (gsk_transform_invert (scale), transform);
}
}
if (gsk_gl_render_job_visit_node_with_offscreen (job, child, &offscreen))
{
/* For non-trivial transforms, we draw everything on a texture and then
* draw the texture transformed. */
if (transform)
gsk_gl_render_job_push_modelview (job, transform);
gsk_gl_render_job_begin_draw (job, CHOOSE_PROGRAM (job, blit));
gsk_gl_program_set_uniform_texture (job->current_program,
UNIFORM_SHARED_SOURCE, 0,
GL_TEXTURE_2D,
GL_TEXTURE0,
offscreen.texture_id);
gsk_gl_render_job_draw_offscreen (job, &child->bounds, &offscreen);
gsk_gl_render_job_end_draw (job);
if (transform)
gsk_gl_render_job_pop_modelview (job);
}
if (category == GSK_TRANSFORM_CATEGORY_2D)
{
if (sx != 1 || sy != 1)
{
gsk_gl_render_job_pop_modelview (job);
gsk_transform_unref (transform);
}
}
}
break;
default:
g_assert_not_reached ();
}
}
static inline void
gsk_gl_render_job_visit_unblurred_inset_shadow_node (GskGLRenderJob *job,
const GskRenderNode *node)
{
const GskRoundedRect *outline = gsk_inset_shadow_node_get_outline (node);
GskRoundedRect transformed_outline;
guint16 color[4];
gsk_gl_render_job_transform_rounded_rect (job, outline, &transformed_outline);
gsk_gl_render_job_begin_draw (job, CHOOSE_PROGRAM (job, inset_shadow));
gsk_gl_program_set_uniform_rounded_rect (job->current_program,
UNIFORM_INSET_SHADOW_OUTLINE_RECT, 0,
&transformed_outline);
gsk_gl_program_set_uniform1f (job->current_program,
UNIFORM_INSET_SHADOW_SPREAD, 0,
gsk_inset_shadow_node_get_spread (node));
gsk_gl_program_set_uniform2f (job->current_program,
UNIFORM_INSET_SHADOW_OFFSET, 0,
gsk_inset_shadow_node_get_dx (node),
gsk_inset_shadow_node_get_dy (node));
rgba_to_half (gsk_inset_shadow_node_get_color (node), color);
gsk_gl_render_job_draw_rect_with_color (job, &node->bounds, color);
gsk_gl_render_job_end_draw (job);
}
static inline void
gsk_gl_render_job_visit_blurred_inset_shadow_node (GskGLRenderJob *job,
const GskRenderNode *node)
{
const GskRoundedRect *node_outline = gsk_inset_shadow_node_get_outline (node);
float blur_radius = gsk_inset_shadow_node_get_blur_radius (node);
float offset_x = gsk_inset_shadow_node_get_dx (node);
float offset_y = gsk_inset_shadow_node_get_dy (node);
float scale_x = job->scale_x;
float scale_y = job->scale_y;
float blur_extra = blur_radius * 2.0; /* 2.0 = shader radius_multiplier */
float half_blur_extra = blur_radius;
float texture_width;
float texture_height;
int blurred_texture_id;
GskTextureKey key;
GskGLRenderOffscreen offscreen = {0};
guint16 color[4];
g_assert (blur_radius > 0);
texture_width = ceilf ((node_outline->bounds.size.width + blur_extra) * scale_x);
texture_height = ceilf ((node_outline->bounds.size.height + blur_extra) * scale_y);
key.pointer = node;
key.pointer_is_child = FALSE;
key.scale_x = scale_x;
key.scale_y = scale_y;
key.filter = GL_NEAREST;
blurred_texture_id = gsk_gl_driver_lookup_texture (job->driver, &key);
if (blurred_texture_id == 0)
{
float spread = gsk_inset_shadow_node_get_spread (node) + half_blur_extra;
GskRoundedRect transformed_outline;
GskRoundedRect outline_to_blur;
GskGLRenderTarget *render_target;
graphene_matrix_t prev_projection;
graphene_rect_t prev_viewport;
guint prev_fbo;
/* TODO: In the following code, we have to be careful about where we apply the scale.
* We're manually scaling stuff (e.g. the outline) so we can later use texture_width
* and texture_height (which are already scaled) as the geometry and keep the modelview
* at a scale of 1. That's kinda complicated though... */
/* Outline of what we actually want to blur later.
* Spread grows inside, so we don't need to account for that. But the blur will need
* to read outside of the inset shadow, so we need to draw some color in there. */
outline_to_blur = *node_outline;
gsk_rounded_rect_shrink (&outline_to_blur,
-half_blur_extra,
-half_blur_extra,
-half_blur_extra,
-half_blur_extra);
/* Fit to our texture */
outline_to_blur.bounds.origin.x = 0;
outline_to_blur.bounds.origin.y = 0;
outline_to_blur.bounds.size.width *= scale_x;
outline_to_blur.bounds.size.height *= scale_y;
for (guint i = 0; i < 4; i ++)
{
outline_to_blur.corner[i].width *= scale_x;
outline_to_blur.corner[i].height *= scale_y;
}
if (!gsk_gl_driver_create_render_target (job->driver,
texture_width, texture_height,
get_target_format (job, node),
GL_NEAREST, GL_NEAREST,
&render_target))
g_assert_not_reached ();
gsk_gl_render_job_set_viewport_for_size (job, texture_width, texture_height, &prev_viewport);
gsk_gl_render_job_set_projection_for_size (job, texture_width, texture_height, &prev_projection);
gsk_gl_render_job_set_modelview (job, NULL);
gsk_gl_render_job_push_clip (job, &GSK_ROUNDED_RECT_INIT (0, 0, texture_width, texture_height));
prev_fbo = gsk_gl_command_queue_bind_framebuffer (job->command_queue, render_target->framebuffer_id);
gsk_gl_command_queue_clear (job->command_queue, 0, &job->viewport);
gsk_gl_render_job_transform_rounded_rect (job, &outline_to_blur, &transformed_outline);
/* Actual inset shadow outline drawing */
gsk_gl_render_job_begin_draw (job, CHOOSE_PROGRAM (job, inset_shadow));
gsk_gl_program_set_uniform_rounded_rect (job->current_program,
UNIFORM_INSET_SHADOW_OUTLINE_RECT, 0,
&transformed_outline);
gsk_gl_program_set_uniform1f (job->current_program,
UNIFORM_INSET_SHADOW_SPREAD, 0,
spread * MAX (scale_x, scale_y));
gsk_gl_program_set_uniform2f (job->current_program,
UNIFORM_INSET_SHADOW_OFFSET, 0,
offset_x * scale_x,
offset_y * scale_y);
rgba_to_half (gsk_inset_shadow_node_get_color (node), color);
gsk_gl_render_job_draw_with_color (job,
0, 0, texture_width, texture_height,
color);
gsk_gl_render_job_end_draw (job);
gsk_gl_render_job_pop_modelview (job);
gsk_gl_render_job_pop_clip (job);
gsk_gl_render_job_set_projection (job, &prev_projection);
gsk_gl_render_job_set_viewport (job, &prev_viewport, NULL);
gsk_gl_command_queue_bind_framebuffer (job->command_queue, prev_fbo);
offscreen.texture_id = render_target->texture_id;
init_full_texture_region (&offscreen);
blurred_texture_id = blur_offscreen (job,
&offscreen,
texture_width,
texture_height,
blur_radius * scale_x,
blur_radius * scale_y);
gsk_gl_driver_release_render_target (job->driver, render_target, TRUE);
gsk_gl_driver_cache_texture (job->driver, &key, blurred_texture_id);
}
g_assert (blurred_texture_id != 0);
/* Blur the rendered unblurred inset shadow */
/* Use a clip to cut away the unwanted parts outside of the original outline */
{
const gboolean needs_clip = !gsk_rounded_rect_is_rectilinear (node_outline);
const float tx1 = half_blur_extra * scale_x / texture_width;
const float tx2 = 1.0 - tx1;
const float ty1 = half_blur_extra * scale_y / texture_height;
const float ty2 = 1.0 - ty1;
if (needs_clip)
{
GskRoundedRect node_clip;
gsk_gl_render_job_transform_bounds (job, &node_outline->bounds, &node_clip.bounds);
for (guint i = 0; i < 4; i ++)
{
node_clip.corner[i].width = node_outline->corner[i].width * scale_x;
node_clip.corner[i].height = node_outline->corner[i].height * scale_y;
}
gsk_gl_render_job_push_clip (job, &node_clip);
}
offscreen.was_offscreen = TRUE;
offscreen.area.x = tx1;
offscreen.area.y = ty1;
offscreen.area.x2 = tx2;
offscreen.area.y2 = ty2;
gsk_gl_render_job_begin_draw (job, CHOOSE_PROGRAM (job, blit));
gsk_gl_program_set_uniform_texture (job->current_program,
UNIFORM_SHARED_SOURCE, 0,
GL_TEXTURE_2D,
GL_TEXTURE0,
blurred_texture_id);
gsk_gl_render_job_draw_offscreen (job, &node->bounds, &offscreen);
gsk_gl_render_job_end_draw (job);
if (needs_clip)
gsk_gl_render_job_pop_clip (job);
}
}
static inline void
gsk_gl_render_job_visit_unblurred_outset_shadow_node (GskGLRenderJob *job,
const GskRenderNode *node)
{
const GskRoundedRect *outline = gsk_outset_shadow_node_get_outline (node);
GskRoundedRect transformed_outline;
float x = node->bounds.origin.x;
float y = node->bounds.origin.y;
float w = node->bounds.size.width;
float h = node->bounds.size.height;
float spread = gsk_outset_shadow_node_get_spread (node);
float dx = gsk_outset_shadow_node_get_dx (node);
float dy = gsk_outset_shadow_node_get_dy (node);
guint16 color[4];
const float edge_sizes[] = { // Top, right, bottom, left
spread - dy, spread + dx, spread + dy, spread - dx
};
const float corner_sizes[][2] = { // top left, top right, bottom right, bottom left
{ outline->corner[0].width + spread - dx, outline->corner[0].height + spread - dy },
{ outline->corner[1].width + spread + dx, outline->corner[1].height + spread - dy },
{ outline->corner[2].width + spread + dx, outline->corner[2].height + spread + dy },
{ outline->corner[3].width + spread - dx, outline->corner[3].height + spread + dy },
};
rgba_to_half (gsk_outset_shadow_node_get_color (node), color);
gsk_gl_render_job_transform_rounded_rect (job, outline, &transformed_outline);
gsk_gl_render_job_begin_draw (job, CHOOSE_PROGRAM (job, unblurred_outset_shadow));
gsk_gl_program_set_uniform_rounded_rect (job->current_program,
UNIFORM_UNBLURRED_OUTSET_SHADOW_OUTLINE_RECT, 0,
&transformed_outline);
gsk_gl_program_set_uniform1f (job->current_program,
UNIFORM_UNBLURRED_OUTSET_SHADOW_SPREAD, 0,
spread);
gsk_gl_program_set_uniform2f (job->current_program,
UNIFORM_UNBLURRED_OUTSET_SHADOW_OFFSET, 0,
dx, dy);
/* Corners... */
if (corner_sizes[0][0] > 0 && corner_sizes[0][1] > 0) /* Top left */
gsk_gl_render_job_draw_with_color (job,
x, y, corner_sizes[0][0], corner_sizes[0][1],
color);
if (corner_sizes[1][0] > 0 && corner_sizes[1][1] > 0) /* Top right */
gsk_gl_render_job_draw_with_color (job,
x + w - corner_sizes[1][0], y,
corner_sizes[1][0], corner_sizes[1][1],
color);
if (corner_sizes[2][0] > 0 && corner_sizes[2][1] > 0) /* Bottom right */
gsk_gl_render_job_draw_with_color (job,
x + w - corner_sizes[2][0], y + h - corner_sizes[2][1],
corner_sizes[2][0], corner_sizes[2][1],
color);
if (corner_sizes[3][0] > 0 && corner_sizes[3][1] > 0) /* Bottom left */
gsk_gl_render_job_draw_with_color (job,
x, y + h - corner_sizes[3][1],
corner_sizes[3][0], corner_sizes[3][1],
color);
/* Edges... */;
if (edge_sizes[0] > 0) /* Top */
gsk_gl_render_job_draw_with_color (job,
x + corner_sizes[0][0], y,
w - corner_sizes[0][0] - corner_sizes[1][0], edge_sizes[0],
color);
if (edge_sizes[1] > 0) /* Right */
gsk_gl_render_job_draw_with_color (job,
x + w - edge_sizes[1], y + corner_sizes[1][1],
edge_sizes[1], h - corner_sizes[1][1] - corner_sizes[2][1],
color);
if (edge_sizes[2] > 0) /* Bottom */
gsk_gl_render_job_draw_with_color (job,
x + corner_sizes[3][0], y + h - edge_sizes[2],
w - corner_sizes[3][0] - corner_sizes[2][0], edge_sizes[2],
color);
if (edge_sizes[3] > 0) /* Left */
gsk_gl_render_job_draw_with_color (job,
x, y + corner_sizes[0][1],
edge_sizes[3], h - corner_sizes[0][1] - corner_sizes[3][1],
color);
gsk_gl_render_job_end_draw (job);
}
static inline void
gsk_gl_render_job_visit_blurred_outset_shadow_node (GskGLRenderJob *job,
const GskRenderNode *node)
{
const GskRoundedRect *outline = gsk_outset_shadow_node_get_outline (node);
float scale_x = job->scale_x;
float scale_y = job->scale_y;
float blur_radius = gsk_outset_shadow_node_get_blur_radius (node);
float blur_extra = blur_radius * 2.0f; /* 2.0 = shader radius_multiplier */
float half_blur_extra = blur_extra / 2.0f;
int extra_blur_pixels_x = ceilf (half_blur_extra * scale_x);
int extra_blur_pixels_y = ceilf (half_blur_extra * scale_y);
float spread = gsk_outset_shadow_node_get_spread (node);
float dx = gsk_outset_shadow_node_get_dx (node);
float dy = gsk_outset_shadow_node_get_dy (node);
GskRoundedRect scaled_outline;
GskRoundedRect transformed_outline;
GskGLRenderOffscreen offscreen = {0};
int texture_width, texture_height;
int blurred_texture_id;
int cached_tid;
gboolean do_slicing;
guint16 color[4];
float half_width = outline->bounds.size.width / 2;
float half_height = outline->bounds.size.height / 2;
rgba_to_half (gsk_outset_shadow_node_get_color (node), color);
/* scaled_outline is the minimal outline we need to draw the given drop shadow,
* enlarged by the spread and offset by the blur radius. */
scaled_outline = *outline;
if (outline->bounds.size.width < blur_extra ||
outline->bounds.size.height < blur_extra ||
outline->corner[0].width >= half_width ||
outline->corner[1].width >= half_width ||
outline->corner[2].width >= half_width ||
outline->corner[3].width >= half_width ||
outline->corner[0].height >= half_height ||
outline->corner[1].height >= half_height ||
outline->corner[2].height >= half_height ||
outline->corner[3].height >= half_height)
{
do_slicing = FALSE;
gsk_rounded_rect_shrink (&scaled_outline, -spread, -spread, -spread, -spread);
}
else
{
/* Shrink our outline to the minimum size that can still hold all the border radii */
gsk_rounded_rect_shrink_to_minimum (&scaled_outline);
/* Increase by the spread */
gsk_rounded_rect_shrink (&scaled_outline, -spread, -spread, -spread, -spread);
/* Grow bounds but don't grow corners */
graphene_rect_inset (&scaled_outline.bounds, - blur_extra / 2.0, - blur_extra / 2.0);
/* For the center part, we add a few pixels */
scaled_outline.bounds.size.width += SHADOW_EXTRA_SIZE;
scaled_outline.bounds.size.height += SHADOW_EXTRA_SIZE;
do_slicing = TRUE;
}
texture_width = (int)ceil ((scaled_outline.bounds.size.width + blur_extra) * scale_x);
texture_height = (int)ceil ((scaled_outline.bounds.size.height + blur_extra) * scale_y);
scaled_outline.bounds.origin.x = extra_blur_pixels_x;
scaled_outline.bounds.origin.y = extra_blur_pixels_y;
scaled_outline.bounds.size.width = texture_width - (extra_blur_pixels_x * 2);
scaled_outline.bounds.size.height = texture_height - (extra_blur_pixels_y * 2);
for (guint i = 0; i < G_N_ELEMENTS (scaled_outline.corner); i++)
{
scaled_outline.corner[i].width *= scale_x;
scaled_outline.corner[i].height *= scale_y;
}
cached_tid = gsk_gl_shadow_library_lookup (job->driver->shadows, &scaled_outline, blur_radius);
if (cached_tid == 0)
{
GdkGLContext *context = job->command_queue->context;
GskGLRenderTarget *render_target;
graphene_matrix_t prev_projection;
graphene_rect_t prev_viewport;
guint prev_fbo;
gsk_gl_driver_create_render_target (job->driver,
texture_width, texture_height,
get_target_format (job, node),
GL_NEAREST, GL_NEAREST,
&render_target);
if (gdk_gl_context_has_debug (context))
{
gdk_gl_context_label_object_printf (context,
GL_TEXTURE,
render_target->texture_id,
"Outset Shadow Temp %d",
render_target->texture_id);
gdk_gl_context_label_object_printf (context,
GL_FRAMEBUFFER,
render_target->framebuffer_id,
"Outset Shadow FB Temp %d",
render_target->framebuffer_id);
}
/* Change state for offscreen */
gsk_gl_render_job_set_projection_for_size (job, texture_width, texture_height, &prev_projection);
gsk_gl_render_job_set_viewport_for_size (job, texture_width, texture_height, &prev_viewport);
gsk_gl_render_job_set_modelview (job, NULL);
gsk_gl_render_job_push_clip (job, &scaled_outline);
/* Bind render target and clear it */
prev_fbo = gsk_gl_command_queue_bind_framebuffer (job->command_queue, render_target->framebuffer_id);
gsk_gl_command_queue_clear (job->command_queue, 0, &job->viewport);
/* Draw the outline using color program */
gsk_gl_render_job_begin_draw (job, CHOOSE_PROGRAM (job, color));
gsk_gl_render_job_draw_with_color (job, 0, 0, texture_width, texture_height,
(guint16[]){ FP16_ONE, FP16_ONE, FP16_ONE, FP16_ONE });
gsk_gl_render_job_end_draw (job);
/* Reset state from offscreen */
gsk_gl_render_job_pop_clip (job);
gsk_gl_render_job_pop_modelview (job);
gsk_gl_render_job_set_viewport (job, &prev_viewport, NULL);
gsk_gl_render_job_set_projection (job, &prev_projection);
/* Now blur the outline */
init_full_texture_region (&offscreen);
offscreen.texture_id = gsk_gl_driver_release_render_target (job->driver, render_target, FALSE);
blurred_texture_id = blur_offscreen (job,
&offscreen,
texture_width,
texture_height,
blur_radius * scale_x,
blur_radius * scale_y);
gsk_gl_shadow_library_insert (job->driver->shadows,
&scaled_outline,
blur_radius,
blurred_texture_id);
gsk_gl_command_queue_bind_framebuffer (job->command_queue, prev_fbo);
}
else
{
blurred_texture_id = cached_tid;
}
gsk_gl_render_job_transform_rounded_rect (job, outline, &transformed_outline);
if (!do_slicing)
{
float min_x = floorf (outline->bounds.origin.x - spread - half_blur_extra + dx);
float min_y = floorf (outline->bounds.origin.y - spread - half_blur_extra + dy);
offscreen.was_offscreen = TRUE;
offscreen.texture_id = blurred_texture_id;
init_full_texture_region (&offscreen);
gsk_gl_render_job_begin_draw (job, CHOOSE_PROGRAM (job, outset_shadow));
gsk_gl_program_set_uniform_texture (job->current_program,
UNIFORM_SHARED_SOURCE, 0,
GL_TEXTURE_2D,
GL_TEXTURE0,
blurred_texture_id);
gsk_gl_program_set_uniform_rounded_rect (job->current_program,
UNIFORM_OUTSET_SHADOW_OUTLINE_RECT, 0,
&transformed_outline);
gsk_gl_render_job_draw_offscreen_with_color (job,
&GRAPHENE_RECT_INIT (min_x,
min_y,
texture_width / scale_x,
texture_height / scale_y),
&offscreen,
color);
gsk_gl_render_job_end_draw (job);
return;
}
/* slicing */
gsk_gl_render_job_begin_draw (job, CHOOSE_PROGRAM (job, outset_shadow));
gsk_gl_program_set_uniform_texture (job->current_program,
UNIFORM_SHARED_SOURCE, 0,
GL_TEXTURE_2D,
GL_TEXTURE0,
blurred_texture_id);
gsk_gl_program_set_uniform_rounded_rect (job->current_program,
UNIFORM_OUTSET_SHADOW_OUTLINE_RECT, 0,
&transformed_outline);
{
float min_x = floorf (outline->bounds.origin.x - spread - half_blur_extra + dx);
float min_y = floorf (outline->bounds.origin.y - spread - half_blur_extra + dy);
float max_x = ceilf (outline->bounds.origin.x + outline->bounds.size.width +
half_blur_extra + dx + spread);
float max_y = ceilf (outline->bounds.origin.y + outline->bounds.size.height +
half_blur_extra + dy + spread);
const GskGLTextureNineSlice *slices;
float left_width, center_width, right_width;
float top_height, center_height, bottom_height;
GskGLTexture *texture;
texture = gsk_gl_driver_get_texture_by_id (job->driver, blurred_texture_id);
slices = gsk_gl_texture_get_nine_slice (texture, &scaled_outline, extra_blur_pixels_x, extra_blur_pixels_y);
offscreen.was_offscreen = TRUE;
/* Our texture coordinates MUST be scaled, while the actual vertex coords
* MUST NOT be scaled.
*/
left_width = slices[NINE_SLICE_TOP_LEFT].rect.width / scale_x;
right_width = slices[NINE_SLICE_TOP_RIGHT].rect.width / scale_x;
center_width = (max_x - min_x) - (left_width + right_width);
top_height = slices[NINE_SLICE_TOP_LEFT].rect.height / scale_y;
bottom_height = slices[NINE_SLICE_BOTTOM_LEFT].rect.height / scale_y;
center_height = (max_y - min_y) - (top_height + bottom_height);
/* Top left */
if (nine_slice_is_visible (&slices[NINE_SLICE_TOP_LEFT]))
{
memcpy (&offscreen.area, &slices[NINE_SLICE_TOP_LEFT].area, sizeof offscreen.area);
gsk_gl_render_job_draw_offscreen_with_color (job,
&GRAPHENE_RECT_INIT (min_x,
min_y,
left_width,
top_height),
&offscreen,
color);
}
/* Top center */
if (nine_slice_is_visible (&slices[NINE_SLICE_TOP_CENTER]))
{
memcpy (&offscreen.area, &slices[NINE_SLICE_TOP_CENTER].area, sizeof offscreen.area);
gsk_gl_render_job_draw_offscreen_with_color (job,
&GRAPHENE_RECT_INIT (min_x + left_width,
min_y,
center_width,
top_height),
&offscreen,
color);
}
/* Top right */
if (nine_slice_is_visible (&slices[NINE_SLICE_TOP_RIGHT]))
{
memcpy (&offscreen.area, &slices[NINE_SLICE_TOP_RIGHT].area, sizeof offscreen.area);
gsk_gl_render_job_draw_offscreen_with_color (job,
&GRAPHENE_RECT_INIT (max_x - right_width,
min_y,
right_width,
top_height),
&offscreen,
color);
}
/* Bottom right */
if (nine_slice_is_visible (&slices[NINE_SLICE_BOTTOM_RIGHT]))
{
memcpy (&offscreen.area, &slices[NINE_SLICE_BOTTOM_RIGHT].area, sizeof offscreen.area);
gsk_gl_render_job_draw_offscreen_with_color (job,
&GRAPHENE_RECT_INIT (max_x - right_width,
max_y - bottom_height,
right_width,
bottom_height),
&offscreen,
color);
}
/* Bottom left */
if (nine_slice_is_visible (&slices[NINE_SLICE_BOTTOM_LEFT]))
{
memcpy (&offscreen.area, &slices[NINE_SLICE_BOTTOM_LEFT].area, sizeof offscreen.area);
gsk_gl_render_job_draw_offscreen_with_color (job,
&GRAPHENE_RECT_INIT (min_x,
max_y - bottom_height,
left_width,
bottom_height),
&offscreen,
color);
}
/* Left side */
if (nine_slice_is_visible (&slices[NINE_SLICE_LEFT_CENTER]))
{
memcpy (&offscreen.area, &slices[NINE_SLICE_LEFT_CENTER].area, sizeof offscreen.area);
gsk_gl_render_job_draw_offscreen_with_color (job,
&GRAPHENE_RECT_INIT (min_x,
min_y + top_height,
left_width,
center_height),
&offscreen,
color);
}
/* Right side */
if (nine_slice_is_visible (&slices[NINE_SLICE_RIGHT_CENTER]))
{
memcpy (&offscreen.area, &slices[NINE_SLICE_RIGHT_CENTER].area, sizeof offscreen.area);
gsk_gl_render_job_draw_offscreen_with_color (job,
&GRAPHENE_RECT_INIT (max_x - right_width,
min_y + top_height,
right_width,
center_height),
&offscreen,
color);
}
/* Bottom side */
if (nine_slice_is_visible (&slices[NINE_SLICE_BOTTOM_CENTER]))
{
memcpy (&offscreen.area, &slices[NINE_SLICE_BOTTOM_CENTER].area, sizeof offscreen.area);
gsk_gl_render_job_draw_offscreen_with_color (job,
&GRAPHENE_RECT_INIT (min_x + left_width,
max_y - bottom_height,
center_width,
bottom_height),
&offscreen,
color);
}
/* Middle */
if (nine_slice_is_visible (&slices[NINE_SLICE_CENTER]))
{
if (!gsk_rounded_rect_contains_rect (outline, &GRAPHENE_RECT_INIT (min_x + left_width,
min_y + top_height,
center_width,
center_height)))
{
memcpy (&offscreen.area, &slices[NINE_SLICE_CENTER].area, sizeof offscreen.area);
gsk_gl_render_job_draw_offscreen_with_color (job,
&GRAPHENE_RECT_INIT (min_x + left_width,
min_y + top_height,
center_width,
center_height),
&offscreen,
color);
}
}
}
gsk_gl_render_job_end_draw (job);
}
static inline gboolean G_GNUC_PURE
equal_texture_nodes (const GskRenderNode *node1,
const GskRenderNode *node2)
{
if (gsk_render_node_get_node_type (node1) != GSK_TEXTURE_NODE ||
gsk_render_node_get_node_type (node2) != GSK_TEXTURE_NODE)
return FALSE;
if (gsk_texture_node_get_texture (node1) !=
gsk_texture_node_get_texture (node2))
return FALSE;
return graphene_rect_equal (&node1->bounds, &node2->bounds);
}
static inline void
gsk_gl_render_job_visit_cross_fade_node (GskGLRenderJob *job,
const GskRenderNode *node)
{
const GskRenderNode *start_node = gsk_cross_fade_node_get_start_child (node);
const GskRenderNode *end_node = gsk_cross_fade_node_get_end_child (node);
float progress = gsk_cross_fade_node_get_progress (node);
GskGLRenderOffscreen offscreen_start = {0};
GskGLRenderOffscreen offscreen_end = {0};
g_assert (progress > 0.0);
g_assert (progress < 1.0);
offscreen_start.force_offscreen = TRUE;
offscreen_start.reset_clip = TRUE;
offscreen_start.bounds = &node->bounds;
offscreen_end.force_offscreen = TRUE;
offscreen_end.reset_clip = TRUE;
offscreen_end.bounds = &node->bounds;
if (!gsk_gl_render_job_visit_node_with_offscreen (job, start_node, &offscreen_start))
{
gsk_gl_render_job_visit_node (job, end_node);
return;
}
g_assert (offscreen_start.texture_id);
if (!gsk_gl_render_job_visit_node_with_offscreen (job, end_node, &offscreen_end))
{
float prev_alpha = gsk_gl_render_job_set_alpha (job, job->alpha * progress);
gsk_gl_render_job_visit_node (job, start_node);
gsk_gl_render_job_set_alpha (job, prev_alpha);
return;
}
g_assert (offscreen_end.texture_id);
gsk_gl_render_job_begin_draw (job, CHOOSE_PROGRAM (job, cross_fade));
gsk_gl_program_set_uniform_texture (job->current_program,
UNIFORM_SHARED_SOURCE, 0,
GL_TEXTURE_2D,
GL_TEXTURE0,
offscreen_start.texture_id);
gsk_gl_program_set_uniform_texture (job->current_program,
UNIFORM_CROSS_FADE_SOURCE2, 0,
GL_TEXTURE_2D,
GL_TEXTURE1,
offscreen_end.texture_id);
gsk_gl_program_set_uniform1f (job->current_program,
UNIFORM_CROSS_FADE_PROGRESS, 0,
progress);
gsk_gl_render_job_draw_offscreen (job, &node->bounds, &offscreen_end);
gsk_gl_render_job_end_draw (job);
}
static gboolean
is_non_branching (const GskRenderNode *node)
{
switch ((int)gsk_render_node_get_node_type (node))
{
case GSK_COLOR_NODE:
case GSK_LINEAR_GRADIENT_NODE:
case GSK_REPEATING_LINEAR_GRADIENT_NODE:
case GSK_RADIAL_GRADIENT_NODE:
case GSK_REPEATING_RADIAL_GRADIENT_NODE:
case GSK_CONIC_GRADIENT_NODE:
case GSK_BORDER_NODE:
case GSK_TEXTURE_NODE:
case GSK_INSET_SHADOW_NODE:
case GSK_OUTSET_SHADOW_NODE:
case GSK_TEXT_NODE:
case GSK_CAIRO_NODE:
return TRUE;
case GSK_TRANSFORM_NODE:
return is_non_branching (gsk_transform_node_get_child (node));
case GSK_OPACITY_NODE:
return is_non_branching (gsk_opacity_node_get_child (node));
case GSK_COLOR_MATRIX_NODE:
return is_non_branching (gsk_color_matrix_node_get_child (node));
case GSK_CLIP_NODE:
return is_non_branching (gsk_clip_node_get_child (node));
case GSK_ROUNDED_CLIP_NODE:
return is_non_branching (gsk_rounded_clip_node_get_child (node));
case GSK_SHADOW_NODE:
return is_non_branching (gsk_shadow_node_get_child (node));
case GSK_BLUR_NODE:
return is_non_branching (gsk_shadow_node_get_child (node));
case GSK_DEBUG_NODE:
return is_non_branching (gsk_debug_node_get_child (node));
case GSK_CONTAINER_NODE:
return gsk_container_node_get_n_children (node) == 1 &&
is_non_branching (gsk_container_node_get_child (node, 0));
default:
return FALSE;
}
}
static inline void
gsk_gl_render_job_visit_opacity_node (GskGLRenderJob *job,
const GskRenderNode *node)
{
const GskRenderNode *child = gsk_opacity_node_get_child (node);
float opacity = gsk_opacity_node_get_opacity (node);
float new_alpha = job->alpha * opacity;
if (!ALPHA_IS_CLEAR (new_alpha))
{
float prev_alpha = gsk_gl_render_job_set_alpha (job, new_alpha);
/* Handle a few easy cases without offscreen. We bail out
* as soon as we see nodes with multiple children - in theory,
* we would only need offscreens for overlapping children.
*/
if (is_non_branching (child))
{
gsk_gl_render_job_visit_node (job, child);
gsk_gl_render_job_set_alpha (job, prev_alpha);
}
else
{
GskGLRenderOffscreen offscreen = {0};
offscreen.bounds = &child->bounds;
offscreen.force_offscreen = TRUE;
offscreen.reset_clip = TRUE;
/* Note: offscreen rendering resets alpha to 1.0 */
if (!gsk_gl_render_job_visit_node_with_offscreen (job, child, &offscreen))
return;
g_assert (offscreen.texture_id);
gsk_gl_render_job_begin_draw (job, CHOOSE_PROGRAM (job, blit));
gsk_gl_program_set_uniform_texture (job->current_program,
UNIFORM_SHARED_SOURCE, 0,
GL_TEXTURE_2D,
GL_TEXTURE0,
offscreen.texture_id);
gsk_gl_render_job_draw_offscreen (job, &node->bounds, &offscreen);
gsk_gl_render_job_end_draw (job);
}
gsk_gl_render_job_set_alpha (job, prev_alpha);
}
}
static inline int
compute_phase_and_pos (float value, float *pos)
{
float v;
*pos = floorf (value);
v = value - *pos;
if (v < 0.125)
return 0;
else if (v < 0.375)
return 1;
else if (v < 0.625)
return 2;
else if (v < 0.875)
return 3;
else
{
*pos += 1;
return 0;
}
}
static inline void
gsk_gl_render_job_visit_text_node (GskGLRenderJob *job,
const GskRenderNode *node,
const GdkRGBA *color,
gboolean force_color)
{
const PangoFont *font = gsk_text_node_get_font (node);
const PangoGlyphInfo *glyphs = gsk_text_node_get_glyphs (node, NULL);
const graphene_point_t *offset = gsk_text_node_get_offset (node);
float text_scale = MAX (job->scale_x, job->scale_y); /* TODO: Fix for uneven scales? */
guint num_glyphs = gsk_text_node_get_num_glyphs (node);
float x = offset->x + job->offset_x;
float y = offset->y + job->offset_y;
GskGLGlyphLibrary *library = job->driver->glyphs;
GskGLCommandBatch *batch;
int x_position = 0;
GskGLGlyphKey lookup;
guint last_texture = 0;
GskGLDrawVertex *vertices;
guint used = 0;
guint16 nc[4] = { FP16_MINUS_ONE, FP16_MINUS_ONE, FP16_MINUS_ONE, FP16_MINUS_ONE };
guint16 cc[4];
const guint16 *c;
const PangoGlyphInfo *gi;
guint i;
int yshift;
float ypos;
if (num_glyphs == 0)
return;
if ((force_color || !gsk_text_node_has_color_glyphs (node)) &&
RGBA_IS_CLEAR (color))
return;
rgba_to_half (color, cc);
lookup.font = (PangoFont *)font;
lookup.scale = (guint) (text_scale * 1024);
yshift = compute_phase_and_pos (y, &ypos);
gsk_gl_render_job_begin_draw (job, CHOOSE_PROGRAM (job, coloring));
batch = gsk_gl_command_queue_get_batch (job->command_queue);
vertices = gsk_gl_command_queue_add_n_vertices (job->command_queue, num_glyphs);
/* We use one quad per character */
for (i = 0, gi = glyphs; i < num_glyphs; i++, gi++)
{
const GskGLGlyphValue *glyph;
float glyph_x, glyph_y, glyph_x2, glyph_y2;
float tx, ty, tx2, ty2;
float cx;
float cy;
guint texture_id;
lookup.glyph = gi->glyph;
/* If the glyph has color, we don't need to recolor anything.
* We tell the shader by setting the color to vec4(-1).
*/
if (!force_color && gi->attr.is_color)
c = nc;
else
c = cc;
cx = (float)(x_position + gi->geometry.x_offset) / PANGO_SCALE;
lookup.xshift = compute_phase_and_pos (x + cx, &cx);
if G_UNLIKELY (gi->geometry.y_offset != 0)
{
cy = (float)(gi->geometry.y_offset) / PANGO_SCALE;
lookup.yshift = compute_phase_and_pos (y + cy, &cy);
}
else
{
lookup.yshift = yshift;
cy = ypos;
}
x_position += gi->geometry.width;
texture_id = gsk_gl_glyph_library_lookup_or_add (library, &lookup, &glyph);
if G_UNLIKELY (texture_id == 0)
continue;
if G_UNLIKELY (last_texture != texture_id || batch->draw.vbo_count + GSK_GL_N_VERTICES > 0xffff)
{
if G_LIKELY (last_texture != 0)
{
guint vbo_offset = batch->draw.vbo_offset + batch->draw.vbo_count;
/* Since we have batched added our VBO vertices to avoid repeated
* calls to the buffer, we need to manually tweak the vbo offset
* of the new batch as otherwise it will point at the end of our
* vbo array.
*/
gsk_gl_render_job_split_draw (job);
batch = gsk_gl_command_queue_get_batch (job->command_queue);
batch->draw.vbo_offset = vbo_offset;
}
gsk_gl_program_set_uniform_texture (job->current_program,
UNIFORM_SHARED_SOURCE, 0,
GL_TEXTURE_2D,
GL_TEXTURE0,
texture_id);
last_texture = texture_id;
}
tx = glyph->entry.area.x;
ty = glyph->entry.area.y;
tx2 = glyph->entry.area.x2;
ty2 = glyph->entry.area.y2;
glyph_x = cx + glyph->ink_rect.x;
glyph_y = cy + glyph->ink_rect.y;
glyph_x2 = glyph_x + glyph->ink_rect.width;
glyph_y2 = glyph_y + glyph->ink_rect.height;
*(vertices++) = (GskGLDrawVertex) { .position = { glyph_x, glyph_y }, .uv = { tx, ty }, .color = { c[0], c[1], c[2], c[3] } };
*(vertices++) = (GskGLDrawVertex) { .position = { glyph_x, glyph_y2 }, .uv = { tx, ty2 }, .color = { c[0], c[1], c[2], c[3] } };
*(vertices++) = (GskGLDrawVertex) { .position = { glyph_x2, glyph_y }, .uv = { tx2, ty }, .color = { c[0], c[1], c[2], c[3] } };
*(vertices++) = (GskGLDrawVertex) { .position = { glyph_x2, glyph_y2 }, .uv = { tx2, ty2 }, .color = { c[0], c[1], c[2], c[3] } };
*(vertices++) = (GskGLDrawVertex) { .position = { glyph_x, glyph_y2 }, .uv = { tx, ty2 }, .color = { c[0], c[1], c[2], c[3] } };
*(vertices++) = (GskGLDrawVertex) { .position = { glyph_x2, glyph_y }, .uv = { tx2, ty }, .color = { c[0], c[1], c[2], c[3] } };
batch->draw.vbo_count += GSK_GL_N_VERTICES;
used++;
}
if (used != num_glyphs)
gsk_gl_command_queue_retract_n_vertices (job->command_queue, num_glyphs - used);
gsk_gl_render_job_end_draw (job);
}
static inline void
gsk_gl_render_job_visit_shadow_node (GskGLRenderJob *job,
const GskRenderNode *node)
{
const gsize n_shadows = gsk_shadow_node_get_n_shadows (node);
const GskRenderNode *original_child = gsk_shadow_node_get_child (node);
const GskRenderNode *shadow_child = original_child;
/* Shadow nodes recolor every pixel of the source texture, but leave the alpha in tact.
* If the child is a color matrix node that doesn't touch the alpha, we can throw that away. */
if (gsk_render_node_get_node_type (shadow_child) == GSK_COLOR_MATRIX_NODE &&
!color_matrix_modifies_alpha (shadow_child))
shadow_child = gsk_color_matrix_node_get_child (shadow_child);
for (guint i = 0; i < n_shadows; i++)
{
const GskShadow *shadow = gsk_shadow_node_get_shadow (node, i);
const float dx = shadow->dx;
const float dy = shadow->dy;
GskGLRenderOffscreen offscreen = {0};
graphene_rect_t bounds;
guint16 color[4];
if (RGBA_IS_CLEAR (&shadow->color))
continue;
if (node_is_invisible (shadow_child))
continue;
if (shadow->radius == 0 &&
gsk_render_node_get_node_type (shadow_child) == GSK_TEXT_NODE)
{
if (dx != 0 || dy != 0)
{
gsk_gl_render_job_offset (job, dx, dy);
gsk_gl_render_job_visit_text_node (job, shadow_child, &shadow->color, TRUE);
gsk_gl_render_job_offset (job, -dx, -dy);
}
continue;
}
if (shadow->radius > 0)
{
float min_x;
float min_y;
float max_x;
float max_y;
offscreen.do_not_cache = TRUE;
blur_node (job,
&offscreen,
shadow_child,
shadow->radius,
&min_x, &max_x,
&min_y, &max_y);
bounds.origin.x = min_x - job->offset_x;
bounds.origin.y = min_y - job->offset_y;
bounds.size.width = max_x - min_x;
bounds.size.height = max_y - min_y;
offscreen.was_offscreen = TRUE;
}
else if (dx == 0 && dy == 0)
{
continue; /* Invisible anyway */
}
else
{
offscreen.bounds = &shadow_child->bounds;
offscreen.reset_clip = TRUE;
offscreen.do_not_cache = TRUE;
if (!gsk_gl_render_job_visit_node_with_offscreen (job, shadow_child, &offscreen))
g_assert_not_reached ();
bounds = shadow_child->bounds;
}
gsk_gl_render_job_offset (job, dx, dy);
gsk_gl_render_job_begin_draw (job, CHOOSE_PROGRAM (job, coloring));
gsk_gl_program_set_uniform_texture (job->current_program,
UNIFORM_SHARED_SOURCE, 0,
GL_TEXTURE_2D,
GL_TEXTURE0,
offscreen.texture_id);
rgba_to_half (&shadow->color, color);
gsk_gl_render_job_draw_offscreen_with_color (job, &bounds, &offscreen, color);
gsk_gl_render_job_end_draw (job);
gsk_gl_render_job_offset (job, -dx, -dy);
}
/* Now draw the child normally */
gsk_gl_render_job_visit_node (job, original_child);
}
static inline void
gsk_gl_render_job_visit_blur_node (GskGLRenderJob *job,
const GskRenderNode *node)
{
const GskRenderNode *child = gsk_blur_node_get_child (node);
float blur_radius = gsk_blur_node_get_radius (node);
GskGLRenderOffscreen offscreen = {0};
GskTextureKey key;
gboolean cache_texture;
float min_x;
float max_x;
float min_y;
float max_y;
g_assert (blur_radius > 0);
if (node_is_invisible (child))
return;
key.pointer = node;
key.pointer_is_child = FALSE;
key.scale_x = job->scale_x;
key.scale_y = job->scale_y;
key.filter = GL_NEAREST;
offscreen.texture_id = gsk_gl_driver_lookup_texture (job->driver, &key);
cache_texture = offscreen.texture_id == 0;
blur_node (job,
&offscreen,
child,
blur_radius,
&min_x, &max_x, &min_y, &max_y);
g_assert (offscreen.texture_id != 0);
if (cache_texture)
gsk_gl_driver_cache_texture (job->driver, &key, offscreen.texture_id);
gsk_gl_render_job_begin_draw (job, CHOOSE_PROGRAM (job, blit));
gsk_gl_program_set_uniform_texture (job->current_program,
UNIFORM_SHARED_SOURCE, 0,
GL_TEXTURE_2D,
GL_TEXTURE0,
offscreen.texture_id);
gsk_gl_render_job_draw_coords (job,
min_x, min_y, max_x, max_y,
0, 1, 1, 0,
(guint16[]) { FP16_ZERO, FP16_ZERO, FP16_ZERO, FP16_ZERO } );
gsk_gl_render_job_end_draw (job);
}
static inline void
gsk_gl_render_job_visit_blend_node (GskGLRenderJob *job,
const GskRenderNode *node)
{
const GskRenderNode *top_child = gsk_blend_node_get_top_child (node);
const GskRenderNode *bottom_child = gsk_blend_node_get_bottom_child (node);
GskGLRenderOffscreen top_offscreen = {0};
GskGLRenderOffscreen bottom_offscreen = {0};
top_offscreen.bounds = &node->bounds;
top_offscreen.force_offscreen = TRUE;
top_offscreen.reset_clip = TRUE;
bottom_offscreen.bounds = &node->bounds;
bottom_offscreen.force_offscreen = TRUE;
bottom_offscreen.reset_clip = TRUE;
/* TODO: We create 2 textures here as big as the blend node, but both the
* start and the end node might be a lot smaller than that. */
if (!gsk_gl_render_job_visit_node_with_offscreen (job, bottom_child, &bottom_offscreen))
{
gsk_gl_render_job_visit_node (job, top_child);
return;
}
g_assert (bottom_offscreen.was_offscreen);
if (!gsk_gl_render_job_visit_node_with_offscreen (job, top_child, &top_offscreen))
{
gsk_gl_render_job_begin_draw (job, CHOOSE_PROGRAM (job, blit));
gsk_gl_program_set_uniform_texture (job->current_program,
UNIFORM_SHARED_SOURCE, 0,
GL_TEXTURE_2D,
GL_TEXTURE0,
bottom_offscreen.texture_id);
gsk_gl_render_job_draw_offscreen (job, &node->bounds, &bottom_offscreen);
gsk_gl_render_job_end_draw (job);
return;
}
g_assert (top_offscreen.was_offscreen);
gsk_gl_render_job_begin_draw (job, CHOOSE_PROGRAM (job, blend));
gsk_gl_program_set_uniform_texture (job->current_program,
UNIFORM_SHARED_SOURCE, 0,
GL_TEXTURE_2D,
GL_TEXTURE0,
bottom_offscreen.texture_id);
gsk_gl_program_set_uniform_texture (job->current_program,
UNIFORM_BLEND_SOURCE2, 0,
GL_TEXTURE_2D,
GL_TEXTURE1,
top_offscreen.texture_id);
gsk_gl_program_set_uniform1i (job->current_program,
UNIFORM_BLEND_MODE, 0,
gsk_blend_node_get_blend_mode (node));
gsk_gl_render_job_draw_offscreen_rect (job, &node->bounds);
gsk_gl_render_job_end_draw (job);
}
static inline void
gsk_gl_render_job_visit_color_matrix_node (GskGLRenderJob *job,
const GskRenderNode *node)
{
const GskRenderNode *child = gsk_color_matrix_node_get_child (node);
GskGLRenderOffscreen offscreen = {0};
float offset[4];
if (node_is_invisible (child))
return;
offscreen.bounds = &node->bounds;
offscreen.reset_clip = TRUE;
if (!gsk_gl_render_job_visit_node_with_offscreen (job, child, &offscreen))
g_assert_not_reached ();
g_assert (offscreen.texture_id > 0);
graphene_vec4_to_float (gsk_color_matrix_node_get_color_offset (node), offset);
gsk_gl_render_job_begin_draw (job, CHOOSE_PROGRAM (job, color_matrix));
gsk_gl_program_set_uniform_texture (job->current_program,
UNIFORM_SHARED_SOURCE, 0,
GL_TEXTURE_2D,
GL_TEXTURE0,
offscreen.texture_id);
gsk_gl_program_set_uniform_matrix (job->current_program,
UNIFORM_COLOR_MATRIX_COLOR_MATRIX, 0,
gsk_color_matrix_node_get_color_matrix (node));
gsk_gl_program_set_uniform4fv (job->current_program,
UNIFORM_COLOR_MATRIX_COLOR_OFFSET, 0,
1,
offset);
gsk_gl_render_job_draw_offscreen (job, &node->bounds, &offscreen);
gsk_gl_render_job_end_draw (job);
}
static inline void
gsk_gl_render_job_visit_gl_shader_node_fallback (GskGLRenderJob *job,
const GskRenderNode *node)
{
guint16 pink[4] = { 15360, 13975, 14758, 15360 }; /* 255 105 180 */
gsk_gl_render_job_begin_draw (job, CHOOSE_PROGRAM (job, color));
gsk_gl_render_job_draw_rect_with_color (job, &node->bounds, pink);
gsk_gl_render_job_end_draw (job);
}
static inline void
gsk_gl_render_job_visit_gl_shader_node (GskGLRenderJob *job,
const GskRenderNode *node)
{
GError *error = NULL;
GskGLShader *shader;
GskGLProgram *program;
int n_children;
shader = gsk_gl_shader_node_get_shader (node);
program = gsk_gl_driver_lookup_shader (job->driver, shader, &error);
n_children = gsk_gl_shader_node_get_n_children (node);
if G_UNLIKELY (program == NULL)
{
if (g_object_get_data (G_OBJECT (shader), "gsk-did-warn") == NULL)
{
g_object_set_data (G_OBJECT (shader), "gsk-did-warn", GUINT_TO_POINTER (1));
g_warning ("Failed to compile gl shader: %s", error->message);
}
gsk_gl_render_job_visit_gl_shader_node_fallback (job, node);
g_clear_error (&error);
}
else
{
GskGLRenderOffscreen offscreens[4] = {{0}};
const GskGLUniform *uniforms;
const guint8 *base;
GBytes *args;
int n_uniforms;
g_assert (n_children < G_N_ELEMENTS (offscreens));
for (guint i = 0; i < n_children; i++)
{
const GskRenderNode *child = gsk_gl_shader_node_get_child (node, i);
offscreens[i].bounds = &node->bounds;
offscreens[i].force_offscreen = TRUE;
offscreens[i].reset_clip = TRUE;
if (!gsk_gl_render_job_visit_node_with_offscreen (job, child, &offscreens[i]))
return;
}
args = gsk_gl_shader_node_get_args (node);
base = g_bytes_get_data (args, NULL);
uniforms = gsk_gl_shader_get_uniforms (shader, &n_uniforms);
gsk_gl_render_job_begin_draw (job, program);
for (guint i = 0; i < n_children; i++)
gsk_gl_program_set_uniform_texture (program,
UNIFORM_CUSTOM_TEXTURE1 + i, 0,
GL_TEXTURE_2D,
GL_TEXTURE0 + i,
offscreens[i].texture_id);
gsk_gl_program_set_uniform2f (program,
UNIFORM_CUSTOM_SIZE, 0,
node->bounds.size.width,
node->bounds.size.height);
for (guint i = 0; i < n_uniforms; i++)
{
const GskGLUniform *u = &uniforms[i];
const guint8 *data = base + u->offset;
switch (u->type)
{
default:
case GSK_GL_UNIFORM_TYPE_NONE:
break;
case GSK_GL_UNIFORM_TYPE_FLOAT:
gsk_gl_uniform_state_set1fv (job->command_queue->uniforms,
program->program_info,
UNIFORM_CUSTOM_ARG0 + i,
0, 1, (const float *)data);
break;
case GSK_GL_UNIFORM_TYPE_INT:
gsk_gl_uniform_state_set1i (job->command_queue->uniforms,
program->program_info,
UNIFORM_CUSTOM_ARG0 + i,
0, *(const gint32 *)data);
break;
case GSK_GL_UNIFORM_TYPE_UINT:
case GSK_GL_UNIFORM_TYPE_BOOL:
gsk_gl_uniform_state_set1ui (job->command_queue->uniforms,
program->program_info,
UNIFORM_CUSTOM_ARG0 + i,
0, *(const guint32 *)data);
break;
case GSK_GL_UNIFORM_TYPE_VEC2:
gsk_gl_uniform_state_set2fv (job->command_queue->uniforms,
program->program_info,
UNIFORM_CUSTOM_ARG0 + i,
0, 1, (const float *)data);
break;
case GSK_GL_UNIFORM_TYPE_VEC3:
gsk_gl_uniform_state_set3fv (job->command_queue->uniforms,
program->program_info,
UNIFORM_CUSTOM_ARG0 + i,
0, 1, (const float *)data);
break;
case GSK_GL_UNIFORM_TYPE_VEC4:
gsk_gl_uniform_state_set4fv (job->command_queue->uniforms,
program->program_info,
UNIFORM_CUSTOM_ARG0 + i,
0, 1, (const float *)data);
break;
}
}
gsk_gl_render_job_draw_offscreen_rect (job, &node->bounds);
gsk_gl_render_job_end_draw (job);
}
}
static void
gsk_gl_render_job_upload_texture (GskGLRenderJob *job,
GdkTexture *texture,
GskGLRenderOffscreen *offscreen)
{
if (gsk_gl_texture_library_can_cache ((GskGLTextureLibrary *)job->driver->icons,
texture->width,
texture->height) &&
!GDK_IS_GL_TEXTURE (texture))
{
const GskGLIconData *icon_data;
gsk_gl_icon_library_lookup_or_add (job->driver->icons, texture, &icon_data);
offscreen->texture_id = GSK_GL_TEXTURE_ATLAS_ENTRY_TEXTURE (icon_data);
memcpy (&offscreen->area, &icon_data->entry.area, sizeof offscreen->area);
}
else
{
offscreen->texture_id = gsk_gl_driver_load_texture (job->driver, texture, GL_LINEAR, GL_LINEAR);
init_full_texture_region (offscreen);
}
}
static inline void
gsk_gl_render_job_visit_texture_node (GskGLRenderJob *job,
const GskRenderNode *node)
{
GdkTexture *texture = gsk_texture_node_get_texture (node);
int max_texture_size = job->command_queue->max_texture_size;
if G_LIKELY (texture->width <= max_texture_size &&
texture->height <= max_texture_size)
{
GskGLRenderOffscreen offscreen = {0};
gsk_gl_render_job_upload_texture (job, texture, &offscreen);
g_assert (offscreen.texture_id);
g_assert (offscreen.was_offscreen == FALSE);
gsk_gl_render_job_begin_draw (job, CHOOSE_PROGRAM (job, blit));
gsk_gl_program_set_uniform_texture (job->current_program,
UNIFORM_SHARED_SOURCE, 0,
GL_TEXTURE_2D,
GL_TEXTURE0,
offscreen.texture_id);
gsk_gl_render_job_draw_offscreen (job, &node->bounds, &offscreen);
gsk_gl_render_job_end_draw (job);
}
else
{
float min_x = job->offset_x + node->bounds.origin.x;
float min_y = job->offset_y + node->bounds.origin.y;
float max_x = min_x + node->bounds.size.width;
float max_y = min_y + node->bounds.size.height;
float scale_x = (max_x - min_x) / texture->width;
float scale_y = (max_y - min_y) / texture->height;
GskGLTextureSlice *slices = NULL;
guint n_slices = 0;
gsk_gl_driver_slice_texture (job->driver, texture, &slices, &n_slices);
g_assert (slices != NULL);
g_assert (n_slices > 0);
gsk_gl_render_job_begin_draw (job, CHOOSE_PROGRAM (job, blit));
for (guint i = 0; i < n_slices; i ++)
{
const GskGLTextureSlice *slice = &slices[i];
float x1, x2, y1, y2;
x1 = min_x + (scale_x * slice->rect.x);
x2 = x1 + (slice->rect.width * scale_x);
y1 = min_y + (scale_y * slice->rect.y);
y2 = y1 + (slice->rect.height * scale_y);
if (i > 0)
gsk_gl_render_job_split_draw (job);
gsk_gl_program_set_uniform_texture (job->current_program,
UNIFORM_SHARED_SOURCE, 0,
GL_TEXTURE_2D,
GL_TEXTURE0,
slice->texture_id);
gsk_gl_render_job_draw_coords (job,
x1, y1, x2, y2,
0, 0, 1, 1,
(guint16[]) { FP16_ZERO, FP16_ZERO, FP16_ZERO, FP16_ZERO });
}
gsk_gl_render_job_end_draw (job);
}
}
static inline void
gsk_gl_render_job_visit_repeat_node (GskGLRenderJob *job,
const GskRenderNode *node)
{
const GskRenderNode *child = gsk_repeat_node_get_child (node);
const graphene_rect_t *child_bounds = gsk_repeat_node_get_child_bounds (node);
GskGLRenderOffscreen offscreen = {0};
if (node_is_invisible (child))
return;
if (!graphene_rect_equal (child_bounds, &child->bounds))
{
/* TODO: implement these repeat nodes. */
gsk_gl_render_job_visit_as_fallback (job, node);
return;
}
/* If the size of the repeat node is smaller than the size of the
* child node, we don't repeat at all and can just draw that part
* of the child texture... */
if (rect_contains_rect (child_bounds, &node->bounds))
{
gsk_gl_render_job_visit_clipped_child (job, child, &node->bounds);
return;
}
offscreen.bounds = &child->bounds;
offscreen.reset_clip = TRUE;
if (!gsk_gl_render_job_visit_node_with_offscreen (job, child, &offscreen))
g_assert_not_reached ();
gsk_gl_render_job_begin_draw (job, CHOOSE_PROGRAM (job, repeat));
gsk_gl_program_set_uniform_texture (job->current_program,
UNIFORM_SHARED_SOURCE, 0,
GL_TEXTURE_2D,
GL_TEXTURE0,
offscreen.texture_id);
gsk_gl_program_set_uniform4f (job->current_program,
UNIFORM_REPEAT_CHILD_BOUNDS, 0,
(node->bounds.origin.x - child_bounds->origin.x) / child_bounds->size.width,
(node->bounds.origin.y - child_bounds->origin.y) / child_bounds->size.height,
node->bounds.size.width / child_bounds->size.width,
node->bounds.size.height / child_bounds->size.height);
gsk_gl_program_set_uniform4f (job->current_program,
UNIFORM_REPEAT_TEXTURE_RECT, 0,
offscreen.area.x,
offscreen.was_offscreen ? offscreen.area.y2 : offscreen.area.y,
offscreen.area.x2,
offscreen.was_offscreen ? offscreen.area.y : offscreen.area.y2);
gsk_gl_render_job_draw_offscreen (job, &node->bounds, &offscreen);
gsk_gl_render_job_end_draw (job);
}
static void
gsk_gl_render_job_visit_node (GskGLRenderJob *job,
const GskRenderNode *node)
{
gboolean has_clip;
g_assert (job != NULL);
g_assert (node != NULL);
g_assert (GSK_IS_GL_DRIVER (job->driver));
g_assert (GSK_IS_GL_COMMAND_QUEUE (job->command_queue));
if (node_is_invisible (node))
return;
if (!gsk_gl_render_job_update_clip (job, &node->bounds, &has_clip))
return;
switch (gsk_render_node_get_node_type (node))
{
case GSK_BLEND_NODE:
gsk_gl_render_job_visit_blend_node (job, node);
break;
case GSK_BLUR_NODE:
if (gsk_blur_node_get_radius (node) > 0)
gsk_gl_render_job_visit_blur_node (job, node);
else
gsk_gl_render_job_visit_node (job, gsk_blur_node_get_child (node));
break;
case GSK_BORDER_NODE:
if (gsk_border_node_get_uniform_color (node) &&
gsk_rounded_rect_is_rectilinear (gsk_border_node_get_outline (node)))
gsk_gl_render_job_visit_rect_border_node (job, node);
else
gsk_gl_render_job_visit_border_node (job, node);
break;
case GSK_CLIP_NODE:
gsk_gl_render_job_visit_clip_node (job, node);
break;
case GSK_COLOR_NODE:
gsk_gl_render_job_visit_color_node (job, node);
break;
case GSK_COLOR_MATRIX_NODE:
gsk_gl_render_job_visit_color_matrix_node (job, node);
break;
case GSK_CONIC_GRADIENT_NODE:
if (gsk_conic_gradient_node_get_n_color_stops (node) < MAX_GRADIENT_STOPS)
gsk_gl_render_job_visit_conic_gradient_node (job, node);
else
gsk_gl_render_job_visit_as_fallback (job, node);
break;
case GSK_CONTAINER_NODE:
{
GskRenderNode **children;
guint n_children;
children = gsk_container_node_get_children (node, &n_children);
for (guint i = 0; i < n_children; i++)
{
const GskRenderNode *child = children[i];
if (i + 1 < n_children &&
job->current_clip->is_fully_contained &&
gsk_render_node_get_node_type (child) == GSK_ROUNDED_CLIP_NODE)
{
const GskRenderNode *grandchild = gsk_rounded_clip_node_get_child (child);
const GskRenderNode *child2 = children[i + 1];
if (gsk_render_node_get_node_type (grandchild) == GSK_COLOR_NODE &&
gsk_render_node_get_node_type (child2) == GSK_BORDER_NODE &&
gsk_border_node_get_uniform_color (child2) &&
rounded_rect_equal (gsk_rounded_clip_node_get_clip (child),
gsk_border_node_get_outline (child2)))
{
gsk_gl_render_job_visit_css_background (job, child, child2);
i++; /* skip the border node */
continue;
}
}
gsk_gl_render_job_visit_node (job, child);
}
}
break;
case GSK_CROSS_FADE_NODE:
{
const GskRenderNode *start_node = gsk_cross_fade_node_get_start_child (node);
const GskRenderNode *end_node = gsk_cross_fade_node_get_end_child (node);
float progress = gsk_cross_fade_node_get_progress (node);
if (progress <= 0.0f)
gsk_gl_render_job_visit_node (job, gsk_cross_fade_node_get_start_child (node));
else if (progress >= 1.0f || equal_texture_nodes (start_node, end_node))
gsk_gl_render_job_visit_node (job, gsk_cross_fade_node_get_end_child (node));
else
gsk_gl_render_job_visit_cross_fade_node (job, node);
}
break;
case GSK_DEBUG_NODE:
/* Debug nodes are ignored because draws get reordered anyway */
gsk_gl_render_job_visit_node (job, gsk_debug_node_get_child (node));
break;
case GSK_GL_SHADER_NODE:
gsk_gl_render_job_visit_gl_shader_node (job, node);
break;
case GSK_INSET_SHADOW_NODE:
if (gsk_inset_shadow_node_get_blur_radius (node) > 0)
gsk_gl_render_job_visit_blurred_inset_shadow_node (job, node);
else
gsk_gl_render_job_visit_unblurred_inset_shadow_node (job, node);
break;
case GSK_LINEAR_GRADIENT_NODE:
case GSK_REPEATING_LINEAR_GRADIENT_NODE:
if (gsk_linear_gradient_node_get_n_color_stops (node) < MAX_GRADIENT_STOPS)
gsk_gl_render_job_visit_linear_gradient_node (job, node);
else
gsk_gl_render_job_visit_as_fallback (job, node);
break;
case GSK_OPACITY_NODE:
gsk_gl_render_job_visit_opacity_node (job, node);
break;
case GSK_OUTSET_SHADOW_NODE:
if (gsk_outset_shadow_node_get_blur_radius (node) > 0)
gsk_gl_render_job_visit_blurred_outset_shadow_node (job, node);
else
gsk_gl_render_job_visit_unblurred_outset_shadow_node (job, node);
break;
case GSK_RADIAL_GRADIENT_NODE:
case GSK_REPEATING_RADIAL_GRADIENT_NODE:
if (gsk_radial_gradient_node_get_n_color_stops (node) < MAX_GRADIENT_STOPS)
gsk_gl_render_job_visit_radial_gradient_node (job, node);
else
gsk_gl_render_job_visit_as_fallback (job, node);
break;
case GSK_REPEAT_NODE:
gsk_gl_render_job_visit_repeat_node (job, node);
break;
case GSK_ROUNDED_CLIP_NODE:
gsk_gl_render_job_visit_rounded_clip_node (job, node);
break;
case GSK_SHADOW_NODE:
gsk_gl_render_job_visit_shadow_node (job, node);
break;
case GSK_TEXT_NODE:
gsk_gl_render_job_visit_text_node (job,
node,
gsk_text_node_get_color (node),
FALSE);
break;
case GSK_TEXTURE_NODE:
gsk_gl_render_job_visit_texture_node (job, node);
break;
case GSK_TRANSFORM_NODE:
gsk_gl_render_job_visit_transform_node (job, node);
break;
case GSK_CAIRO_NODE:
gsk_gl_render_job_visit_as_fallback (job, node);
break;
case GSK_NOT_A_RENDER_NODE:
default:
g_assert_not_reached ();
break;
}
if (has_clip)
gsk_gl_render_job_pop_clip (job);
}
static gboolean
gsk_gl_render_job_visit_node_with_offscreen (GskGLRenderJob *job,
const GskRenderNode *node,
GskGLRenderOffscreen *offscreen)
{
GskTextureKey key;
guint cached_id;
int filter;
g_assert (job != NULL);
g_assert (node != NULL);
g_assert (offscreen != NULL);
g_assert (offscreen->texture_id == 0);
g_assert (offscreen->bounds != NULL);
if (node_is_invisible (node))
{
/* Just to be safe. */
offscreen->texture_id = 0;
init_full_texture_region (offscreen);
offscreen->was_offscreen = FALSE;
return FALSE;
}
if (gsk_render_node_get_node_type (node) == GSK_TEXTURE_NODE &&
offscreen->force_offscreen == FALSE)
{
GdkTexture *texture = gsk_texture_node_get_texture (node);
gsk_gl_render_job_upload_texture (job, texture, offscreen);
g_assert (offscreen->was_offscreen == FALSE);
return TRUE;
}
filter = offscreen->linear_filter ? GL_LINEAR : GL_NEAREST;
key.pointer = node;
key.pointer_is_child = TRUE; /* Don't conflict with the child using the cache too */
key.parent_rect = *offscreen->bounds;
key.scale_x = job->scale_x;
key.scale_y = job->scale_y;
key.filter = filter;
float offset_x = job->offset_x;
float offset_y = job->offset_y;
gboolean flipped_x = job->scale_x < 0;
gboolean flipped_y = job->scale_y < 0;
graphene_rect_t viewport;
if (flipped_x || flipped_y)
{
GskTransform *transform = gsk_transform_scale (NULL,
flipped_x ? -1 : 1,
flipped_y ? -1 : 1);
gsk_gl_render_job_push_modelview (job, transform);
}
gsk_gl_render_job_transform_bounds (job, offscreen->bounds, &viewport);
float aligned_x = floorf (viewport.origin.x);
float padding_left = viewport.origin.x - aligned_x;
float aligned_width = ceilf (viewport.size.width + padding_left);
float padding_right = aligned_width - viewport.size.width - padding_left;
float aligned_y = floorf (viewport.origin.y);
float padding_top = viewport.origin.y - aligned_y;
float aligned_height = ceilf (viewport.size.height + padding_top);
float padding_bottom = aligned_height - viewport.size.height - padding_top;
/* Tweak the scale factor so that the required texture doesn't
* exceed the max texture limit. This will render with a lower
* resolution, but this is better than clipping.
*/
g_assert (job->command_queue->max_texture_size > 0);
float downscale_x = 1;
float downscale_y = 1;
int texture_width;
int texture_height;
int max_texture_size = job->command_queue->max_texture_size;
if (aligned_width > max_texture_size)
downscale_x = (float)max_texture_size / viewport.size.width;
if (aligned_height > max_texture_size)
downscale_y = (float)max_texture_size / viewport.size.height;
if (downscale_x != 1 || downscale_y != 1)
{
GskTransform *transform = gsk_transform_scale (NULL, downscale_x, downscale_y);
gsk_gl_render_job_push_modelview (job, transform);
gsk_gl_render_job_transform_bounds (job, offscreen->bounds, &viewport);
}
if (downscale_x == 1)
{
viewport.origin.x = aligned_x;
viewport.size.width = aligned_width;
offscreen->area.x = padding_left / aligned_width;
offscreen->area.x2 = 1.0f - (padding_right / aligned_width);
texture_width = aligned_width;
}
else
{
offscreen->area.x = 0;
offscreen->area.x2 = 1;
texture_width = max_texture_size;
}
if (downscale_y == 1)
{
viewport.origin.y = aligned_y;
viewport.size.height = aligned_height;
offscreen->area.y = padding_bottom / aligned_height;
offscreen->area.y2 = 1.0f - padding_top / aligned_height;
texture_height = aligned_height;
}
else
{
offscreen->area.y = 0;
offscreen->area.y2 = 1;
texture_height = max_texture_size;
}
/* Check if we've already cached the drawn texture. */
cached_id = gsk_gl_driver_lookup_texture (job->driver, &key);
if (cached_id != 0)
{
if (downscale_x != 1 || downscale_y != 1)
gsk_gl_render_job_pop_modelview (job);
if (flipped_x || flipped_y)
gsk_gl_render_job_pop_modelview (job);
offscreen->texture_id = cached_id;
/* We didn't render it offscreen, but hand out an offscreen texture id */
offscreen->was_offscreen = TRUE;
return TRUE;
}
GskGLRenderTarget *render_target;
graphene_matrix_t prev_projection;
graphene_rect_t prev_viewport;
float prev_alpha;
guint prev_fbo;
if (!gsk_gl_driver_create_render_target (job->driver,
texture_width, texture_height,
get_target_format (job, node),
filter, filter,
&render_target))
g_assert_not_reached ();
if (gdk_gl_context_has_debug (job->command_queue->context))
{
gdk_gl_context_label_object_printf (job->command_queue->context,
GL_TEXTURE,
render_target->texture_id,
"Offscreen<%s> %d",
g_type_name_from_instance ((GTypeInstance *) node),
render_target->texture_id);
gdk_gl_context_label_object_printf (job->command_queue->context,
GL_FRAMEBUFFER,
render_target->framebuffer_id,
"Offscreen<%s> FB %d",
g_type_name_from_instance ((GTypeInstance *) node),
render_target->framebuffer_id);
}
gsk_gl_render_job_set_viewport (job, &viewport, &prev_viewport);
gsk_gl_render_job_set_projection_from_rect (job, &job->viewport, &prev_projection);
prev_alpha = gsk_gl_render_job_set_alpha (job, 1.0f);
prev_fbo = gsk_gl_command_queue_bind_framebuffer (job->command_queue, render_target->framebuffer_id);
gsk_gl_command_queue_clear (job->command_queue, 0, &job->viewport);
if (offscreen->reset_clip)
gsk_gl_render_job_push_clip (job, &GSK_ROUNDED_RECT_INIT_FROM_RECT (job->viewport));
gsk_gl_render_job_visit_node (job, node);
if (offscreen->reset_clip)
gsk_gl_render_job_pop_clip (job);
if (downscale_x != 1 || downscale_y != 1)
gsk_gl_render_job_pop_modelview (job);
if (flipped_x || flipped_y)
gsk_gl_render_job_pop_modelview (job);
gsk_gl_render_job_set_viewport (job, &prev_viewport, NULL);
gsk_gl_render_job_set_projection (job, &prev_projection);
gsk_gl_render_job_set_alpha (job, prev_alpha);
gsk_gl_command_queue_bind_framebuffer (job->command_queue, prev_fbo);
job->offset_x = offset_x;
job->offset_y = offset_y;
offscreen->was_offscreen = TRUE;
offscreen->texture_id = gsk_gl_driver_release_render_target (job->driver,
render_target,
FALSE);
if (!offscreen->do_not_cache)
gsk_gl_driver_cache_texture (job->driver, &key, offscreen->texture_id);
return TRUE;
}
void
gsk_gl_render_job_render_flipped (GskGLRenderJob *job,
GskRenderNode *root)
{
graphene_matrix_t proj;
guint framebuffer_id;
guint texture_id;
guint surface_height;
g_return_if_fail (job != NULL);
g_return_if_fail (root != NULL);
g_return_if_fail (GSK_IS_GL_DRIVER (job->driver));
surface_height = job->viewport.size.height;
graphene_matrix_init_ortho (&proj,
job->viewport.origin.x,
job->viewport.origin.x + job->viewport.size.width,
job->viewport.origin.y,
job->viewport.origin.y + job->viewport.size.height,
ORTHO_NEAR_PLANE,
ORTHO_FAR_PLANE);
graphene_matrix_scale (&proj, 1, -1, 1);
if (!gsk_gl_command_queue_create_render_target (job->command_queue,
MAX (1, job->viewport.size.width),
MAX (1, job->viewport.size.height),
job->target_format,
GL_NEAREST, GL_NEAREST,
&framebuffer_id, &texture_id))
return;
/* Setup drawing to our offscreen texture/framebuffer which is flipped */
gsk_gl_command_queue_bind_framebuffer (job->command_queue, framebuffer_id);
gsk_gl_command_queue_clear (job->command_queue, 0, &job->viewport);
/* Visit all nodes creating batches */
gdk_gl_context_push_debug_group (job->command_queue->context, "Building command queue");
gsk_gl_render_job_visit_node (job, root);
gdk_gl_context_pop_debug_group (job->command_queue->context);
/* Now draw to our real destination, but flipped */
gsk_gl_render_job_set_alpha (job, 1.0f);
gsk_gl_command_queue_bind_framebuffer (job->command_queue, job->framebuffer);
gsk_gl_command_queue_clear (job->command_queue, 0, &job->viewport);
gsk_gl_render_job_begin_draw (job, CHOOSE_PROGRAM (job, blit));
gsk_gl_program_set_uniform_texture (job->current_program,
UNIFORM_SHARED_SOURCE, 0,
GL_TEXTURE_2D,
GL_TEXTURE0,
texture_id);
gsk_gl_render_job_draw_rect (job, &job->viewport);
gsk_gl_render_job_end_draw (job);
gdk_gl_context_push_debug_group (job->command_queue->context, "Executing command queue");
gsk_gl_command_queue_execute (job->command_queue, surface_height, 1, NULL, job->default_framebuffer);
gdk_gl_context_pop_debug_group (job->command_queue->context);
glDeleteFramebuffers (1, &framebuffer_id);
glDeleteTextures (1, &texture_id);
}
void
gsk_gl_render_job_render (GskGLRenderJob *job,
GskRenderNode *root)
{
G_GNUC_UNUSED gint64 start_time;
guint scale_factor;
guint surface_height;
g_return_if_fail (job != NULL);
g_return_if_fail (root != NULL);
g_return_if_fail (GSK_IS_GL_DRIVER (job->driver));
scale_factor = MAX (job->scale_x, job->scale_y);
surface_height = job->viewport.size.height;
gsk_gl_command_queue_make_current (job->command_queue);
/* Build the command queue using the shared GL context for all renderers
* on the same display.
*/
start_time = GDK_PROFILER_CURRENT_TIME;
gdk_gl_context_push_debug_group (job->command_queue->context, "Building command queue");
gsk_gl_command_queue_bind_framebuffer (job->command_queue, job->framebuffer);
if (job->clear_framebuffer)
gsk_gl_command_queue_clear (job->command_queue, 0, &job->viewport);
gsk_gl_render_job_visit_node (job, root);
gdk_gl_context_pop_debug_group (job->command_queue->context);
gdk_profiler_add_mark (start_time, GDK_PROFILER_CURRENT_TIME-start_time, "Build GL command queue", "");
#if 0
/* At this point the atlases have uploaded content while we processed
* nodes but have not necessarily been used by the commands in the queue.
*/
gsk_gl_driver_save_atlases_to_png (job->driver, NULL);
#endif
/* But now for executing the command queue, we want to use the context
* that was provided to us when creating the render job as framebuffer 0
* is bound to that context.
*/
start_time = GDK_PROFILER_CURRENT_TIME;
gsk_gl_command_queue_make_current (job->command_queue);
gdk_gl_context_push_debug_group (job->command_queue->context, "Executing command queue");
gsk_gl_command_queue_execute (job->command_queue, surface_height, scale_factor, job->region, job->default_framebuffer);
gdk_gl_context_pop_debug_group (job->command_queue->context);
gdk_profiler_add_mark (start_time, GDK_PROFILER_CURRENT_TIME-start_time, "Execute GL command queue", "");
}
void
gsk_gl_render_job_set_debug_fallback (GskGLRenderJob *job,
gboolean debug_fallback)
{
g_return_if_fail (job != NULL);
job->debug_fallback = !!debug_fallback;
}
static int
get_framebuffer_format (GdkGLContext *context,
guint framebuffer)
{
int size;
if (!gdk_gl_context_check_version (context, 0, 0, 3, 0))
return GL_RGBA8;
glBindFramebuffer (GL_FRAMEBUFFER, framebuffer);
glGetFramebufferAttachmentParameteriv (GL_FRAMEBUFFER,
framebuffer ? GL_COLOR_ATTACHMENT0
: gdk_gl_context_get_use_es (context) ? GL_BACK
: GL_BACK_LEFT,
GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE, &size);
if (size > 16)
return GL_RGBA32F;
else if (size > 8)
return GL_RGBA16F;
else
return GL_RGBA8;
}
GskGLRenderJob *
gsk_gl_render_job_new (GskGLDriver *driver,
const graphene_rect_t *viewport,
float scale_factor,
const cairo_region_t *region,
guint framebuffer,
gboolean clear_framebuffer)
{
const graphene_rect_t *clip_rect = viewport;
graphene_rect_t transformed_extents;
GskGLRenderJob *job;
GdkGLContext *context;
GLint default_framebuffer = 0;
g_return_val_if_fail (GSK_IS_GL_DRIVER (driver), NULL);
g_return_val_if_fail (viewport != NULL, NULL);
g_return_val_if_fail (scale_factor > 0, NULL);
/* Check for non-standard framebuffer binding as we might not be using
* the default framebuffer on systems like macOS where we've bound an
* IOSurface to a GL_TEXTURE_RECTANGLE. Otherwise, no scissor clip will
* be applied in the command queue causing overdrawing.
*/
context = driver->command_queue->context;
default_framebuffer = GDK_GL_CONTEXT_GET_CLASS (context)->get_default_framebuffer (context);
if (framebuffer == 0 && default_framebuffer != 0)
framebuffer = default_framebuffer;
job = g_slice_new0 (GskGLRenderJob);
job->driver = g_object_ref (driver);
job->command_queue = job->driver->command_queue;
job->clip = g_array_sized_new (FALSE, FALSE, sizeof (GskGLRenderClip), 16);
job->modelview = g_array_sized_new (FALSE, FALSE, sizeof (GskGLRenderModelview), 16);
job->framebuffer = framebuffer;
job->clear_framebuffer = !!clear_framebuffer;
job->default_framebuffer = default_framebuffer;
job->offset_x = 0;
job->offset_y = 0;
job->scale_x = scale_factor;
job->scale_y = scale_factor;
job->viewport = *viewport;
job->target_format = get_framebuffer_format (job->command_queue->context, framebuffer);
gsk_gl_render_job_set_alpha (job, 1.0f);
gsk_gl_render_job_set_projection_from_rect (job, viewport, NULL);
gsk_gl_render_job_set_modelview (job, gsk_transform_scale (NULL, scale_factor, scale_factor));
/* Setup our initial clip. If region is NULL then we are drawing the
* whole viewport. Otherwise, we need to convert the region to a
* bounding box and clip based on that.
*/
if (region != NULL)
{
cairo_rectangle_int_t extents;
cairo_region_get_extents (region, &extents);
gsk_gl_render_job_transform_bounds (job,
&GRAPHENE_RECT_INIT (extents.x,
extents.y,
extents.width,
extents.height),
&transformed_extents);
clip_rect = &transformed_extents;
job->region = cairo_region_create_rectangle (&extents);
}
gsk_gl_render_job_push_clip (job,
&GSK_ROUNDED_RECT_INIT (clip_rect->origin.x,
clip_rect->origin.y,
clip_rect->size.width,
clip_rect->size.height));
return job;
}
void
gsk_gl_render_job_free (GskGLRenderJob *job)
{
job->current_modelview = NULL;
job->current_clip = NULL;
while (job->modelview->len > 0)
{
GskGLRenderModelview *modelview = &g_array_index (job->modelview, GskGLRenderModelview, job->modelview->len-1);
g_clear_pointer (&modelview->transform, gsk_transform_unref);
job->modelview->len--;
}
g_clear_object (&job->driver);
g_clear_pointer (&job->region, cairo_region_destroy);
g_clear_pointer (&job->modelview, g_array_unref);
g_clear_pointer (&job->clip, g_array_unref);
g_slice_free (GskGLRenderJob, job);
}
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