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gtk/gsk/gpu/gskgpunodeprocessor.c
Benjamin Otte 719021e1f4 gpu: Handle tiny offscreens 
Due to rounding errors, it is possible after intersecting a lot of
rectangles to end up with a tiny size for an offscreen. And because we
allow an epsilon before ceil()ing to an integer (see commit afc7b46264
for details) it is now possible that we end up with a size of 0.

Avoid that by always enforcing a minimum size of 1px.

Test included

The test uses a different codepath to arrive at the same problem - it
specifies the small size instead of triggering it via rounding errors
and clipping like the original bug (and most likely the more common case
to encounter this problem.

Fixes #6656
2024-04-28 13:51:42 +02:00

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#include "config.h"
#include "gskgpunodeprocessorprivate.h"
#include "gskgpuborderopprivate.h"
#include "gskgpuboxshadowopprivate.h"
#include "gskgpublendmodeopprivate.h"
#include "gskgpublendopprivate.h"
#include "gskgpublitopprivate.h"
#include "gskgpubluropprivate.h"
#include "gskgpuclearopprivate.h"
#include "gskgpuclipprivate.h"
#include "gskgpucolorizeopprivate.h"
#include "gskgpucolormatrixopprivate.h"
#include "gskgpucoloropprivate.h"
#include "gskgpuconicgradientopprivate.h"
#include "gskgpucrossfadeopprivate.h"
#include "gskgpudescriptorsprivate.h"
#include "gskgpudeviceprivate.h"
#include "gskgpuframeprivate.h"
#include "gskgpuglobalsopprivate.h"
#include "gskgpuimageprivate.h"
#include "gskgpulineargradientopprivate.h"
#include "gskgpumaskopprivate.h"
#include "gskgpumipmapopprivate.h"
#include "gskgpuradialgradientopprivate.h"
#include "gskgpurenderpassopprivate.h"
#include "gskgpuroundedcoloropprivate.h"
#include "gskgpuscissoropprivate.h"
#include "gskgpustraightalphaopprivate.h"
#include "gskgputextureopprivate.h"
#include "gskgpuuberopprivate.h"
#include "gskgpuuploadopprivate.h"
#include "gskcairoblurprivate.h"
#include "gskdebugprivate.h"
#include "gskpath.h"
#include "gskrectprivate.h"
#include "gskrendernodeprivate.h"
#include "gskroundedrectprivate.h"
#include "gskstrokeprivate.h"
#include "gsktransformprivate.h"
#include "gskprivate.h"
#include "gdk/gdkrgbaprivate.h"
#include "gdk/gdksubsurfaceprivate.h"
/* the epsilon we allow pixels to be off due to rounding errors.
* Chosen rather randomly.
*/
#define EPSILON 0.001
/* A note about coordinate systems
*
* The rendering code keeps track of multiple coordinate systems to optimize rendering as
* much as possible and in the coordinate system it makes most sense in.
* Sometimes there are cases where GL requires a certain coordinate system, too.
*
* 1. the node coordinate system
* This is the coordinate system of the rendernode. It is basically not used outside of
* looking at the node and basically never hits the GPU (it does for paths). We immediately
* convert it to:
*
* 2. the basic coordinate system
* convert on CPU: NodeProcessor.offset
* convert on GPU: ---
* This is the coordinate system we emit vertex state in, the clip is tracked here.
* The main benefit is that most transform nodes only change the offset, so we can avoid
* updating any state in this coordinate system when that happens.
*
* 3. the scaled coordinate system
* converts on CPU: NodeProcessor.scale
* converts on GPU: GSK_GLOBAL_SCALE
* This includes the current scale of the transform. It is usually equal to the scale factor
* of the window we are rendering to (which is bad because devs without hidpi screens can
* forget this and then everyone else will see bugs). We make decisions about pixel sizes in
* this coordinate system, like picking glyphs from the glyph cache or the sizes of offscreens
* for offscreen rendering.
*
* 4. the device coordinate system
* converts on CPU: NodeProcessor.modelview
* converts on GPU: ---
* The scissor rect is tracked in this coordinate system. It represents the actual device pixels.
* A bunch of optimizations (like glScissor() and glClear()) can be done here, so in the case
* that modelview == NULL and we end up with integer coordinates (because pixels), we try to go
* here.
* This coordinate system does not exist on shaders as they rarely reason about pixels, and if
* they need to, they can ask the fragment shader via gl_FragCoord.
*
* 5. the GL coordinate system
* converts on CPU: NodeProcessor.projection
* converts on GPU: GSK_GLOBAL_MVP (from scaled coordinate system)
* This coordinate system is what GL (or Vulkan) expect coordinates to appear in, and is usually
* (-1, -1) => (1, 1), but may be flipped etc depending on the render target. The CPU essentially
* never uses it, other than to allow the vertex shaders to emit its vertices.
*/
typedef struct _GskGpuNodeProcessor GskGpuNodeProcessor;
typedef struct _GskGpuPatternWriter GskGpuPatternWriter;
typedef enum {
GSK_GPU_GLOBAL_MATRIX = (1 << 0),
GSK_GPU_GLOBAL_SCALE = (1 << 1),
GSK_GPU_GLOBAL_CLIP = (1 << 2),
GSK_GPU_GLOBAL_SCISSOR = (1 << 3),
GSK_GPU_GLOBAL_BLEND = (1 << 4),
} GskGpuGlobals;
struct _GskGpuNodeProcessor
{
GskGpuFrame *frame;
GskGpuDescriptors *desc;
cairo_rectangle_int_t scissor;
GskGpuBlend blend;
graphene_point_t offset;
graphene_matrix_t projection;
graphene_vec2_t scale;
GskTransform *modelview;
GskGpuClip clip;
float opacity;
GskGpuGlobals pending_globals;
};
#define GDK_ARRAY_NAME pattern_buffer
#define GDK_ARRAY_TYPE_NAME PatternBuffer
#define GDK_ARRAY_ELEMENT_TYPE guchar
#define GDK_ARRAY_BY_VALUE 1
#define GDK_ARRAY_PREALLOC 2048
#define GDK_ARRAY_NO_MEMSET 1
#include "gdk/gdkarrayimpl.c"
struct _GskGpuPatternWriter
{
GskGpuFrame *frame;
GskGpuDescriptors *desc;
graphene_rect_t bounds;
graphene_point_t offset;
graphene_vec2_t scale;
guint stack;
PatternBuffer buffer;
};
static void gsk_gpu_node_processor_add_node (GskGpuNodeProcessor *self,
GskRenderNode *node);
static gboolean gsk_gpu_node_processor_create_node_pattern (GskGpuPatternWriter *self,
GskRenderNode *node);
static void
gsk_gpu_node_processor_finish (GskGpuNodeProcessor *self)
{
g_clear_pointer (&self->modelview, gsk_transform_unref);
g_clear_object (&self->desc);
}
static void
gsk_gpu_node_processor_init (GskGpuNodeProcessor *self,
GskGpuFrame *frame,
GskGpuDescriptors *desc,
GskGpuImage *target,
const cairo_rectangle_int_t *clip,
const graphene_rect_t *viewport)
{
gsize width, height;
width = gsk_gpu_image_get_width (target);
height = gsk_gpu_image_get_height (target);
self->frame = frame;
if (desc)
self->desc = g_object_ref (desc);
else
self->desc = NULL;
self->scissor = *clip;
self->blend = GSK_GPU_BLEND_OVER;
if (clip->x == 0 && clip->y == 0 && clip->width == width && clip->height == height)
{
gsk_gpu_clip_init_empty (&self->clip, &GRAPHENE_RECT_INIT (0, 0, viewport->size.width, viewport->size.height));
}
else
{
float scale_x = viewport->size.width / width;
float scale_y = viewport->size.height / height;
gsk_gpu_clip_init_empty (&self->clip,
&GRAPHENE_RECT_INIT (
scale_x * clip->x,
scale_y * clip->y,
scale_x * clip->width,
scale_y * clip->height
));
}
self->modelview = NULL;
gsk_gpu_image_get_projection_matrix (target, &self->projection);
graphene_vec2_init (&self->scale,
width / viewport->size.width,
height / viewport->size.height);
self->offset = GRAPHENE_POINT_INIT (-viewport->origin.x,
-viewport->origin.y);
self->opacity = 1.0;
self->pending_globals = GSK_GPU_GLOBAL_MATRIX | GSK_GPU_GLOBAL_SCALE | GSK_GPU_GLOBAL_CLIP | GSK_GPU_GLOBAL_SCISSOR | GSK_GPU_GLOBAL_BLEND;
}
static void
gsk_gpu_node_processor_emit_globals_op (GskGpuNodeProcessor *self)
{
graphene_matrix_t mvp;
if (self->modelview)
{
gsk_transform_to_matrix (self->modelview, &mvp);
graphene_matrix_multiply (&mvp, &self->projection, &mvp);
}
else
graphene_matrix_init_from_matrix (&mvp, &self->projection);
gsk_gpu_globals_op (self->frame,
&self->scale,
&mvp,
&self->clip.rect);
self->pending_globals &= ~(GSK_GPU_GLOBAL_MATRIX | GSK_GPU_GLOBAL_SCALE | GSK_GPU_GLOBAL_CLIP);
}
static void
gsk_gpu_node_processor_emit_scissor_op (GskGpuNodeProcessor *self)
{
gsk_gpu_scissor_op (self->frame,
&self->scissor);
self->pending_globals &= ~GSK_GPU_GLOBAL_SCISSOR;
}
static void
gsk_gpu_node_processor_emit_blend_op (GskGpuNodeProcessor *self)
{
gsk_gpu_blend_op (self->frame, self->blend);
self->pending_globals &= ~GSK_GPU_GLOBAL_BLEND;
}
static void
gsk_gpu_node_processor_sync_globals (GskGpuNodeProcessor *self,
GskGpuGlobals ignored)
{
GskGpuGlobals required;
required = self->pending_globals & ~ignored;
if (required & (GSK_GPU_GLOBAL_MATRIX | GSK_GPU_GLOBAL_SCALE | GSK_GPU_GLOBAL_CLIP))
gsk_gpu_node_processor_emit_globals_op (self);
if (required & GSK_GPU_GLOBAL_SCISSOR)
gsk_gpu_node_processor_emit_scissor_op (self);
if (required & GSK_GPU_GLOBAL_BLEND)
gsk_gpu_node_processor_emit_blend_op (self);
}
static guint32
gsk_gpu_node_processor_add_image (GskGpuNodeProcessor *self,
GskGpuImage *image,
GskGpuSampler sampler)
{
guint32 descriptor;
if (self->desc != NULL)
{
if (gsk_gpu_descriptors_add_image (self->desc, image, sampler, &descriptor))
return descriptor;
g_object_unref (self->desc);
}
self->desc = gsk_gpu_frame_create_descriptors (self->frame);
if (!gsk_gpu_descriptors_add_image (self->desc, image, sampler, &descriptor))
{
g_assert_not_reached ();
return 0;
}
return descriptor;
}
static void
gsk_gpu_node_processor_add_images (GskGpuNodeProcessor *self,
gsize n_images,
GskGpuImage **images,
GskGpuSampler *samplers,
guint32 *out_descriptors)
{
GskGpuDescriptors *desc;
gsize i;
g_assert (n_images > 0);
/* note: This will infloop if more images are requested than can fit into an empty descriptors,
* so don't do that. */
do
{
out_descriptors[0] = gsk_gpu_node_processor_add_image (self, images[0], samplers[0]);
desc = self->desc;
for (i = 1; i < n_images; i++)
{
out_descriptors[i] = gsk_gpu_node_processor_add_image (self, images[i], samplers[i]);
if (desc != self->desc)
break;
}
}
while (desc != self->desc);
}
static void
rect_round_to_pixels (const graphene_rect_t *src,
const graphene_vec2_t *pixel_scale,
const graphene_point_t *pixel_offset,
graphene_rect_t *dest)
{
float x, y, xscale, yscale, inv_xscale, inv_yscale;
xscale = graphene_vec2_get_x (pixel_scale);
yscale = graphene_vec2_get_y (pixel_scale);
inv_xscale = 1.0f / xscale;
inv_yscale = 1.0f / yscale;
x = floorf ((src->origin.x + pixel_offset->x) * xscale);
y = floorf ((src->origin.y + pixel_offset->y) * yscale);
*dest = GRAPHENE_RECT_INIT (
x * inv_xscale - pixel_offset->x,
y * inv_yscale - pixel_offset->y,
(ceilf ((src->origin.x + pixel_offset->x + src->size.width) * xscale) - x) * inv_xscale,
(ceilf ((src->origin.y + pixel_offset->y + src->size.height) * yscale) - y) * inv_yscale);
}
static GskGpuImage *
gsk_gpu_node_processor_init_draw (GskGpuNodeProcessor *self,
GskGpuFrame *frame,
GdkMemoryDepth depth,
const graphene_vec2_t *scale,
const graphene_rect_t *viewport)
{
GskGpuImage *image;
cairo_rectangle_int_t area;
area.x = 0;
area.y = 0;
area.width = MAX (1, ceilf (graphene_vec2_get_x (scale) * viewport->size.width - EPSILON));
area.height = MAX (1, ceilf (graphene_vec2_get_y (scale) * viewport->size.height - EPSILON));
image = gsk_gpu_device_create_offscreen_image (gsk_gpu_frame_get_device (frame),
FALSE,
depth,
area.width, area.height);
if (image == NULL)
return NULL;
gsk_gpu_node_processor_init (self,
frame,
NULL,
image,
&area,
viewport);
gsk_gpu_render_pass_begin_op (frame,
image,
&area,
GSK_RENDER_PASS_OFFSCREEN);
return image;
}
static void
gsk_gpu_node_processor_finish_draw (GskGpuNodeProcessor *self,
GskGpuImage *image)
{
gsk_gpu_render_pass_end_op (self->frame,
image,
GSK_RENDER_PASS_OFFSCREEN);
gsk_gpu_node_processor_finish (self);
}
void
gsk_gpu_node_processor_process (GskGpuFrame *frame,
GskGpuImage *target,
const cairo_rectangle_int_t *clip,
GskRenderNode *node,
const graphene_rect_t *viewport)
{
GskGpuNodeProcessor self;
gsk_gpu_node_processor_init (&self,
frame,
NULL,
target,
clip,
viewport);
gsk_gpu_node_processor_add_node (&self, node);
gsk_gpu_node_processor_finish (&self);
}
static void
gsk_gpu_pattern_writer_init (GskGpuPatternWriter *self,
GskGpuFrame *frame,
const graphene_vec2_t *scale,
const graphene_point_t *offset,
const graphene_rect_t *bounds)
{
self->frame = frame;
self->desc = NULL;
self->bounds = GRAPHENE_RECT_INIT (bounds->origin.x + offset->x,
bounds->origin.y + offset->y,
bounds->size.width,
bounds->size.height);
self->offset = *offset;
self->scale = *scale;
self->stack = 0;
pattern_buffer_init (&self->buffer);
}
static inline gsize
round_up (gsize number, gsize divisor)
{
return (number + divisor - 1) / divisor * divisor;
}
static void
gsk_gpu_pattern_writer_append (GskGpuPatternWriter *self,
gsize align,
const guchar *data,
gsize size)
{
pattern_buffer_set_size (&self->buffer, round_up (pattern_buffer_get_size (&self->buffer), align));
pattern_buffer_splice (&self->buffer,
pattern_buffer_get_size (&self->buffer),
0,
FALSE,
data,
size);
}
static void
gsk_gpu_pattern_writer_append_float (GskGpuPatternWriter *self,
float f)
{
gsk_gpu_pattern_writer_append (self, G_ALIGNOF (float), (guchar *) &f, sizeof (float));
}
static void
gsk_gpu_pattern_writer_append_uint (GskGpuPatternWriter *self,
guint32 u)
{
gsk_gpu_pattern_writer_append (self, G_ALIGNOF (guint32), (guchar *) &u, sizeof (guint32));
}
static void
gsk_gpu_pattern_writer_append_matrix (GskGpuPatternWriter *self,
const graphene_matrix_t *matrix)
{
float f[16];
graphene_matrix_to_float (matrix, f);
gsk_gpu_pattern_writer_append (self, G_ALIGNOF (float), (guchar *) f, sizeof (f));
}
static void
gsk_gpu_pattern_writer_append_vec4 (GskGpuPatternWriter *self,
const graphene_vec4_t *vec4)
{
float f[4];
graphene_vec4_to_float (vec4, f);
gsk_gpu_pattern_writer_append (self, G_ALIGNOF (float), (guchar *) f, sizeof (f));
}
static void
gsk_gpu_pattern_writer_append_point (GskGpuPatternWriter *self,
const graphene_point_t *point,
const graphene_point_t *offset)
{
float f[2];
f[0] = point->x + offset->x;
f[1] = point->y + offset->y;
gsk_gpu_pattern_writer_append (self, G_ALIGNOF (float), (guchar *) f, sizeof (f));
}
static void
gsk_gpu_pattern_writer_append_rect (GskGpuPatternWriter *self,
const graphene_rect_t *rect,
const graphene_point_t *offset)
{
float f[4];
gsk_gpu_rect_to_float (rect, offset, f);
gsk_gpu_pattern_writer_append (self, G_ALIGNOF (float), (guchar *) f, sizeof (f));
}
static void
gsk_gpu_pattern_writer_append_rgba (GskGpuPatternWriter *self,
const GdkRGBA *rgba)
{
float f[4] = { rgba->red, rgba->green, rgba->blue, rgba->alpha };
gsk_gpu_pattern_writer_append (self, G_ALIGNOF (float), (guchar *) f, sizeof (f));
}
static void
gsk_gpu_pattern_writer_append_color_stops (GskGpuPatternWriter *self,
const GskColorStop *stops,
gsize n_stops)
{
gsk_gpu_pattern_writer_append_uint (self, n_stops);
gsk_gpu_pattern_writer_append (self, G_ALIGNOF (float), (guchar *) stops, sizeof (GskColorStop) * n_stops);
}
static gboolean
gsk_gpu_pattern_writer_push_stack (GskGpuPatternWriter *self)
{
if (self->stack >= GSK_GPU_PATTERN_STACK_SIZE)
return FALSE;
self->stack++;
return TRUE;
}
static void
gsk_gpu_pattern_writer_pop_stack (GskGpuPatternWriter *self)
{
g_assert (self->stack > 0);
self->stack--;
}
static void
gsk_gpu_pattern_writer_finish (GskGpuPatternWriter *self)
{
pattern_buffer_clear (&self->buffer);
g_assert (self->stack == 0);
g_clear_object (&self->desc);
}
static gboolean
gsk_gpu_pattern_writer_add_image (GskGpuPatternWriter *self,
GskGpuImage *image,
GskGpuSampler sampler,
guint32 *out_descriptor)
{
if (self->desc == NULL)
self->desc = gsk_gpu_frame_create_descriptors (self->frame);
return gsk_gpu_descriptors_add_image (self->desc, image, sampler, out_descriptor);
}
static void
extract_scale_from_transform (GskTransform *transform,
float *out_scale_x,
float *out_scale_y)
{
switch (gsk_transform_get_category (transform))
{
default:
g_assert_not_reached ();
case GSK_TRANSFORM_CATEGORY_IDENTITY:
case GSK_TRANSFORM_CATEGORY_2D_TRANSLATE:
*out_scale_x = 1.0f;
*out_scale_y = 1.0f;
return;
case GSK_TRANSFORM_CATEGORY_2D_AFFINE:
{
float scale_x, scale_y, dx, dy;
gsk_transform_to_affine (transform, &scale_x, &scale_y, &dx, &dy);
*out_scale_x = fabs (scale_x);
*out_scale_y = fabs (scale_y);
}
return;
case GSK_TRANSFORM_CATEGORY_2D:
{
float skew_x, skew_y, scale_x, scale_y, angle, dx, dy;
gsk_transform_to_2d_components (transform,
&skew_x, &skew_y,
&scale_x, &scale_y,
&angle,
&dx, &dy);
*out_scale_x = fabs (scale_x);
*out_scale_y = fabs (scale_y);
}
return;
case GSK_TRANSFORM_CATEGORY_UNKNOWN:
case GSK_TRANSFORM_CATEGORY_ANY:
case GSK_TRANSFORM_CATEGORY_3D:
{
graphene_quaternion_t rotation;
graphene_matrix_t matrix;
graphene_vec4_t perspective;
graphene_vec3_t translation;
graphene_vec3_t matrix_scale;
graphene_vec3_t shear;
gsk_transform_to_matrix (transform, &matrix);
graphene_matrix_decompose (&matrix,
&translation,
&matrix_scale,
&rotation,
&shear,
&perspective);
*out_scale_x = fabs (graphene_vec3_get_x (&matrix_scale));
*out_scale_y = fabs (graphene_vec3_get_y (&matrix_scale));
}
return;
}
}
static gboolean
gsk_gpu_node_processor_rect_is_integer (GskGpuNodeProcessor *self,
const graphene_rect_t *rect,
cairo_rectangle_int_t *int_rect)
{
graphene_rect_t transformed_rect;
float scale_x = graphene_vec2_get_x (&self->scale);
float scale_y = graphene_vec2_get_y (&self->scale);
switch (gsk_transform_get_category (self->modelview))
{
case GSK_TRANSFORM_CATEGORY_UNKNOWN:
case GSK_TRANSFORM_CATEGORY_ANY:
case GSK_TRANSFORM_CATEGORY_3D:
case GSK_TRANSFORM_CATEGORY_2D:
/* FIXME: We could try to handle 90° rotation here,
* but I don't think there's a use case */
return FALSE;
case GSK_TRANSFORM_CATEGORY_2D_AFFINE:
case GSK_TRANSFORM_CATEGORY_2D_TRANSLATE:
gsk_transform_transform_bounds (self->modelview, rect, &transformed_rect);
rect = &transformed_rect;
break;
case GSK_TRANSFORM_CATEGORY_IDENTITY:
default:
break;
}
int_rect->x = rect->origin.x * scale_x;
int_rect->y = rect->origin.y * scale_y;
int_rect->width = rect->size.width * scale_x;
int_rect->height = rect->size.height * scale_y;
return int_rect->x == rect->origin.x * scale_x
&& int_rect->y == rect->origin.y * scale_y
&& int_rect->width == rect->size.width * scale_x
&& int_rect->height == rect->size.height * scale_y;
}
static void
gsk_gpu_node_processor_get_clip_bounds (GskGpuNodeProcessor *self,
graphene_rect_t *out_bounds)
{
graphene_rect_offset_r (&self->clip.rect.bounds,
- self->offset.x,
- self->offset.y,
out_bounds);
/* FIXME: We could try the scissor rect here.
* But how often is that smaller than the clip bounds?
*/
}
static gboolean G_GNUC_WARN_UNUSED_RESULT
gsk_gpu_node_processor_clip_node_bounds (GskGpuNodeProcessor *self,
GskRenderNode *node,
graphene_rect_t *out_bounds)
{
graphene_rect_t tmp;
gsk_gpu_node_processor_get_clip_bounds (self, &tmp);
if (!gsk_rect_intersection (&tmp, &node->bounds, out_bounds))
return FALSE;
return TRUE;
}
static void
gsk_gpu_node_processor_image_op (GskGpuNodeProcessor *self,
GskGpuImage *image,
const graphene_rect_t *rect,
const graphene_rect_t *tex_rect)
{
guint32 descriptor;
g_assert (self->pending_globals == 0);
descriptor = gsk_gpu_node_processor_add_image (self, image, GSK_GPU_SAMPLER_DEFAULT);
if (gsk_gpu_image_get_flags (image) & GSK_GPU_IMAGE_STRAIGHT_ALPHA)
{
gsk_gpu_straight_alpha_op (self->frame,
gsk_gpu_clip_get_shader_clip (&self->clip, &self->offset, rect),
self->opacity,
self->desc,
descriptor,
rect,
&self->offset,
tex_rect);
}
else if (self->opacity < 1.0)
{
gsk_gpu_color_matrix_op_opacity (self->frame,
gsk_gpu_clip_get_shader_clip (&self->clip, &self->offset, rect),
self->desc,
descriptor,
rect,
&self->offset,
tex_rect,
self->opacity);
}
else
{
gsk_gpu_texture_op (self->frame,
gsk_gpu_clip_get_shader_clip (&self->clip, &self->offset, rect),
self->desc,
descriptor,
rect,
&self->offset,
tex_rect);
}
}
static GskGpuImage *
gsk_gpu_node_processor_create_offscreen (GskGpuFrame *frame,
const graphene_vec2_t *scale,
const graphene_rect_t *viewport,
GskRenderNode *node)
{
GskGpuNodeProcessor self;
GskGpuImage *image;
image = gsk_gpu_node_processor_init_draw (&self,
frame,
gsk_render_node_get_preferred_depth (node),
scale,
viewport);
if (image == NULL)
return NULL;
gsk_gpu_node_processor_add_node (&self, node);
gsk_gpu_node_processor_finish_draw (&self, image);
return image;
}
/*
* gsk_gpu_get_node_as_image:
* @frame: frame to render in
* @clip_bounds: region of node that must be included in image
* @scale: scale factor to use for the image
* @node: the node to render
* @out_bounds: the actual bounds of the result
*
* Get the part of the node indicated by the clip bounds as an image.
*
* It is perfectly valid for this function to return an image covering
* a larger or smaller rectangle than the given clip bounds.
* It can be smaller if the node is actually smaller than the clip
* bounds and it's not necessary to create such a large offscreen, and
* it can be larger if only part of a node is drawn but a cached image
* for the full node (usually a texture node) already exists.
*
* The rectangle that is actually covered by the image is returned in
* out_bounds.
*
* Returns: the image or %NULL if there was nothing to render
**/
static GskGpuImage *
gsk_gpu_get_node_as_image (GskGpuFrame *frame,
const graphene_rect_t *clip_bounds,
const graphene_vec2_t *scale,
GskRenderNode *node,
graphene_rect_t *out_bounds)
{
GskGpuImage *result;
switch ((guint) gsk_render_node_get_node_type (node))
{
case GSK_TEXTURE_NODE:
{
GdkTexture *texture = gsk_texture_node_get_texture (node);
GskGpuDevice *device = gsk_gpu_frame_get_device (frame);
gint64 timestamp = gsk_gpu_frame_get_timestamp (frame);
result = gsk_gpu_device_lookup_texture_image (device, texture, timestamp);
if (result == NULL)
result = gsk_gpu_frame_upload_texture (frame, FALSE, texture);
if (result)
{
*out_bounds = node->bounds;
return result;
}
break;
}
case GSK_CAIRO_NODE:
result = gsk_gpu_upload_cairo_op (frame,
scale,
clip_bounds,
(GskGpuCairoFunc) gsk_render_node_draw_fallback,
gsk_render_node_ref (node),
(GDestroyNotify) gsk_render_node_unref);
g_object_ref (result);
*out_bounds = *clip_bounds;
return result;
default:
break;
}
GSK_DEBUG (FALLBACK, "Offscreening node '%s'", g_type_name_from_instance ((GTypeInstance *) node));
result = gsk_gpu_node_processor_create_offscreen (frame,
scale,
clip_bounds,
node);
*out_bounds = *clip_bounds;
return result;
}
static GskGpuImage *
gsk_gpu_node_processor_ensure_image (GskGpuFrame *frame,
GskGpuImage *image,
GskGpuImageFlags required_flags,
GskGpuImageFlags disallowed_flags)
{
GskGpuImageFlags flags, missing_flags;
GskGpuImage *copy;
gsize width, height;
g_assert ((required_flags & disallowed_flags) == 0);
g_assert ((required_flags & (GSK_GPU_IMAGE_EXTERNAL | GSK_GPU_IMAGE_STRAIGHT_ALPHA | GSK_GPU_IMAGE_NO_BLIT)) == 0);
flags = gsk_gpu_image_get_flags (image);
missing_flags = required_flags & ~flags;
if ((flags & disallowed_flags) == 0)
{
if (missing_flags == 0)
return image;
if (missing_flags == GSK_GPU_IMAGE_MIPMAP &&
(flags & GSK_GPU_IMAGE_CAN_MIPMAP))
{
gsk_gpu_mipmap_op (frame, image);
return image;
}
}
width = gsk_gpu_image_get_width (image);
height = gsk_gpu_image_get_height (image);
copy = gsk_gpu_device_create_offscreen_image (gsk_gpu_frame_get_device (frame),
required_flags & (GSK_GPU_IMAGE_CAN_MIPMAP | GSK_GPU_IMAGE_MIPMAP) ? TRUE : FALSE,
gdk_memory_format_get_depth (gsk_gpu_image_get_format (image)),
width, height);
if (gsk_gpu_frame_should_optimize (frame, GSK_GPU_OPTIMIZE_BLIT) &&
(flags & (GSK_GPU_IMAGE_NO_BLIT | GSK_GPU_IMAGE_STRAIGHT_ALPHA | GSK_GPU_IMAGE_FILTERABLE)) == GSK_GPU_IMAGE_FILTERABLE)
{
gsk_gpu_blit_op (frame,
image,
copy,
&(cairo_rectangle_int_t) { 0, 0, width, height },
&(cairo_rectangle_int_t) { 0, 0, width, height },
GSK_GPU_BLIT_NEAREST);
}
else
{
GskGpuNodeProcessor other;
graphene_rect_t rect = GRAPHENE_RECT_INIT (0, 0, width, height);
gsk_gpu_node_processor_init (&other,
frame,
NULL,
copy,
&(cairo_rectangle_int_t) { 0, 0, width, height },
&rect);
gsk_gpu_render_pass_begin_op (other.frame,
copy,
&(cairo_rectangle_int_t) { 0, 0, width, height },
GSK_RENDER_PASS_OFFSCREEN);
gsk_gpu_node_processor_sync_globals (&other, 0);
gsk_gpu_node_processor_image_op (&other,
image,
&rect,
&rect);
gsk_gpu_render_pass_end_op (other.frame,
copy,
GSK_RENDER_PASS_OFFSCREEN);
gsk_gpu_node_processor_finish (&other);
}
if (required_flags & GSK_GPU_IMAGE_MIPMAP)
gsk_gpu_mipmap_op (frame, copy);
g_object_unref (image);
return copy;
}
/*
* gsk_gpu_node_processor_get_node_as_image:
* @self: a node processor
* @required_flags: flags that the resulting image must have
* @disallowed_flags: flags that the resulting image must NOT have
* @clip_bounds: (nullable): clip rectangle to use or NULL to use
* the current clip
* @node: the node to turn into an image
* @out_bounds: bounds of the the image in node space
*
* Generates an image for the given node that conforms to the required flags
* and does not contain the disallowed flags. The image is restricted to the
* region in the clip bounds.
*
* Returns: (nullable): The node as an image or %NULL if the node is fully
* clipped
**/
static GskGpuImage *
gsk_gpu_node_processor_get_node_as_image (GskGpuNodeProcessor *self,
GskGpuImageFlags required_flags,
GskGpuImageFlags disallowed_flags,
const graphene_rect_t *clip_bounds,
GskRenderNode *node,
graphene_rect_t *out_bounds)
{
GskGpuImage *image, *ensure;
graphene_rect_t clip;
if (clip_bounds == NULL)
{
if (!gsk_gpu_node_processor_clip_node_bounds (self, node, &clip))
return NULL;
}
else
{
if (!gsk_rect_intersection (clip_bounds, &node->bounds, &clip))
return NULL;
}
rect_round_to_pixels (&clip, &self->scale, &self->offset, &clip);
image = gsk_gpu_get_node_as_image (self->frame,
&clip,
&self->scale,
node,
out_bounds);
if (image == NULL)
return NULL;
ensure = gsk_gpu_node_processor_ensure_image (self->frame,
image,
required_flags,
disallowed_flags);
/* if we fixed up a cached texture, cache the fixed up version instead */
if (ensure != image && disallowed_flags &&
gsk_render_node_get_node_type (node) == GSK_TEXTURE_NODE)
{
gsk_gpu_device_cache_texture_image (gsk_gpu_frame_get_device (self->frame),
gsk_texture_node_get_texture (node),
gsk_gpu_frame_get_timestamp (self->frame),
ensure);
}
return ensure;
}
static void
gsk_gpu_node_processor_blur_op (GskGpuNodeProcessor *self,
const graphene_rect_t *rect,
const graphene_point_t *shadow_offset,
float blur_radius,
const GdkRGBA *shadow_color,
GskGpuDescriptors *source_desc,
guint32 source_descriptor,
GdkMemoryDepth source_depth,
const graphene_rect_t *source_rect)
{
GskGpuNodeProcessor other;
GskGpuImage *intermediate;
guint32 intermediate_descriptor;
graphene_vec2_t direction;
graphene_rect_t clip_rect, intermediate_rect;
graphene_point_t real_offset;
float clip_radius;
clip_radius = gsk_cairo_blur_compute_pixels (blur_radius / 2.0);
/* FIXME: Handle clip radius growing the clip too much */
gsk_gpu_node_processor_get_clip_bounds (self, &clip_rect);
clip_rect.origin.x -= shadow_offset->x;
clip_rect.origin.y -= shadow_offset->y;
graphene_rect_inset (&clip_rect, 0.f, -clip_radius);
if (!gsk_rect_intersection (rect, &clip_rect, &intermediate_rect))
return;
rect_round_to_pixels (&intermediate_rect, &self->scale, &self->offset, &intermediate_rect);
intermediate = gsk_gpu_node_processor_init_draw (&other,
self->frame,
source_depth,
&self->scale,
&intermediate_rect);
gsk_gpu_node_processor_sync_globals (&other, 0);
graphene_vec2_init (&direction, blur_radius, 0.0f);
gsk_gpu_blur_op (other.frame,
gsk_gpu_clip_get_shader_clip (&other.clip, &other.offset, &intermediate_rect),
source_desc,
source_descriptor,
&intermediate_rect,
&other.offset,
source_rect,
&direction);
gsk_gpu_node_processor_finish_draw (&other, intermediate);
real_offset = GRAPHENE_POINT_INIT (self->offset.x + shadow_offset->x,
self->offset.y + shadow_offset->y);
graphene_vec2_init (&direction, 0.0f, blur_radius);
intermediate_descriptor = gsk_gpu_node_processor_add_image (self, intermediate, GSK_GPU_SAMPLER_TRANSPARENT);
if (shadow_color)
{
gsk_gpu_blur_shadow_op (self->frame,
gsk_gpu_clip_get_shader_clip (&self->clip, &real_offset, rect),
self->desc,
intermediate_descriptor,
rect,
&real_offset,
&intermediate_rect,
&direction,
shadow_color);
}
else
{
gsk_gpu_blur_op (self->frame,
gsk_gpu_clip_get_shader_clip (&self->clip, &real_offset, rect),
self->desc,
intermediate_descriptor,
rect,
&real_offset,
&intermediate_rect,
&direction);
}
g_object_unref (intermediate);
}
static void
gsk_gpu_node_processor_add_fallback_node (GskGpuNodeProcessor *self,
GskRenderNode *node)
{
GskGpuImage *image;
graphene_rect_t clipped_bounds;
if (!gsk_gpu_node_processor_clip_node_bounds (self, node, &clipped_bounds))
return;
rect_round_to_pixels (&clipped_bounds, &self->scale, &self->offset, &clipped_bounds);
gsk_gpu_node_processor_sync_globals (self, 0);
image = gsk_gpu_upload_cairo_op (self->frame,
&self->scale,
&clipped_bounds,
(GskGpuCairoFunc) gsk_render_node_draw_fallback,
gsk_render_node_ref (node),
(GDestroyNotify) gsk_render_node_unref);
gsk_gpu_node_processor_image_op (self,
image,
&node->bounds,
&clipped_bounds);
}
static gboolean
gsk_gpu_node_processor_repeat_node_can_ubershader (GskRenderNode *node)
{
const graphene_rect_t *child_bounds;
child_bounds = gsk_repeat_node_get_child_bounds (node);
if (child_bounds->size.width > node->bounds.size.width ||
child_bounds->size.height > node->bounds.size.height)
return FALSE;
return TRUE;
}
/* To be called when code wants to run a shader which
* would require rendering @node into an offscreen, but it
* could also run an ubershader.
*/
static gboolean
gsk_gpu_node_processor_ubershader_instead_of_offscreen (GskGpuNodeProcessor *self,
GskRenderNode *node)
{
if (!gsk_gpu_frame_should_optimize (self->frame, GSK_GPU_OPTIMIZE_UBER))
return FALSE;
for (;;)
{
switch (gsk_render_node_get_node_type (node))
{
case GSK_TRANSFORM_NODE:
node = gsk_transform_node_get_child (node);
break;
case GSK_CLIP_NODE:
node = gsk_clip_node_get_child (node);
break;
case GSK_OPACITY_NODE:
node = gsk_opacity_node_get_child (node);
break;
case GSK_DEBUG_NODE:
node = gsk_debug_node_get_child (node);
break;
case GSK_SUBSURFACE_NODE:
node = gsk_subsurface_node_get_child (node);
break;
case GSK_REPEAT_NODE:
return gsk_gpu_node_processor_repeat_node_can_ubershader (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_ROUNDED_CLIP_NODE:
case GSK_COLOR_MATRIX_NODE:
case GSK_CROSS_FADE_NODE:
case GSK_BLEND_NODE:
case GSK_TEXT_NODE:
case GSK_MASK_NODE:
return TRUE;
case GSK_CONTAINER_NODE:
case GSK_CAIRO_NODE:
case GSK_BORDER_NODE:
case GSK_TEXTURE_NODE:
case GSK_INSET_SHADOW_NODE:
case GSK_OUTSET_SHADOW_NODE:
case GSK_SHADOW_NODE:
case GSK_BLUR_NODE:
case GSK_GL_SHADER_NODE:
case GSK_TEXTURE_SCALE_NODE:
case GSK_FILL_NODE:
case GSK_STROKE_NODE:
return FALSE;
case GSK_NOT_A_RENDER_NODE:
default:
g_return_val_if_reached (FALSE);
}
}
}
static gboolean
gsk_gpu_node_processor_try_node_as_pattern (GskGpuNodeProcessor *self,
GskRenderNode *node)
{
GskGpuPatternWriter writer;
graphene_rect_t clipped;
GskGpuBuffer *buffer;
gsize offset;
guint32 pattern_id;
g_assert (self->pending_globals == 0);
if (!gsk_gpu_node_processor_clip_node_bounds (self, node, &clipped))
return TRUE;
gsk_gpu_pattern_writer_init (&writer,
self->frame,
&self->scale,
&self->offset,
&clipped);
if (!gsk_gpu_node_processor_create_node_pattern (&writer, node))
{
gsk_gpu_pattern_writer_finish (&writer);
return FALSE;
}
if (self->opacity < 1.0)
{
gsk_gpu_pattern_writer_append_uint (&writer, GSK_GPU_PATTERN_OPACITY);
gsk_gpu_pattern_writer_append_float (&writer, self->opacity);
}
gsk_gpu_pattern_writer_append_uint (&writer, GSK_GPU_PATTERN_DONE);
buffer = gsk_gpu_frame_write_storage_buffer (self->frame,
pattern_buffer_get_data (&writer.buffer),
pattern_buffer_get_size (&writer.buffer),
&offset);
if (writer.desc == NULL)
{
if (self->desc == NULL)
self->desc = gsk_gpu_frame_create_descriptors (self->frame);
if (!gsk_gpu_descriptors_add_buffer (self->desc, buffer, &pattern_id))
writer.desc = gsk_gpu_frame_create_descriptors (self->frame);
}
if (writer.desc &&
!gsk_gpu_descriptors_add_buffer (writer.desc, buffer, &pattern_id))
{
g_assert_not_reached ();
}
pattern_id = (pattern_id << 22) | (offset / sizeof (float));
gsk_gpu_uber_op (self->frame,
gsk_gpu_clip_get_shader_clip (&self->clip, &self->offset, &node->bounds),
&node->bounds,
&self->offset,
writer.desc ? writer.desc : self->desc,
pattern_id);
gsk_gpu_pattern_writer_finish (&writer);
return TRUE;
}
static void
gsk_gpu_node_processor_add_without_opacity (GskGpuNodeProcessor *self,
GskRenderNode *node)
{
GskGpuImage *image;
guint32 descriptor;
graphene_rect_t tex_rect;
gsk_gpu_node_processor_sync_globals (self, 0);
if (gsk_gpu_node_processor_ubershader_instead_of_offscreen (self, node) &&
gsk_gpu_node_processor_try_node_as_pattern (self, node))
return;
image = gsk_gpu_node_processor_get_node_as_image (self,
0,
GSK_GPU_IMAGE_STRAIGHT_ALPHA,
NULL,
node,
&tex_rect);
if (image == NULL)
return;
descriptor = gsk_gpu_node_processor_add_image (self, image, GSK_GPU_SAMPLER_DEFAULT);
gsk_gpu_color_matrix_op_opacity (self->frame,
gsk_gpu_clip_get_shader_clip (&self->clip, &self->offset, &node->bounds),
self->desc,
descriptor,
&node->bounds,
&self->offset,
&tex_rect,
self->opacity);
g_object_unref (image);
}
static void
gsk_gpu_node_processor_add_node_clipped (GskGpuNodeProcessor *self,
GskRenderNode *node,
const graphene_rect_t *clip_bounds)
{
GskGpuClip old_clip;
graphene_rect_t clip;
cairo_rectangle_int_t scissor;
if (gsk_rect_contains_rect (clip_bounds, &node->bounds))
{
gsk_gpu_node_processor_add_node (self, node);
return;
}
graphene_rect_offset_r (clip_bounds,
self->offset.x, self->offset.y,
&clip);
gsk_gpu_clip_init_copy (&old_clip, &self->clip);
/* Check if we can use scissoring for the clip */
if (gsk_gpu_node_processor_rect_is_integer (self, &clip, &scissor))
{
cairo_rectangle_int_t old_scissor;
if (!gdk_rectangle_intersect (&scissor, &self->scissor, &scissor))
return;
old_scissor = self->scissor;
if (gsk_gpu_clip_intersect_rect (&self->clip, &old_clip, &clip))
{
if (self->clip.type == GSK_GPU_CLIP_ALL_CLIPPED)
{
gsk_gpu_clip_init_copy (&self->clip, &old_clip);
return;
}
else if ((self->clip.type == GSK_GPU_CLIP_RECT || self->clip.type == GSK_GPU_CLIP_CONTAINED) &&
gsk_rect_contains_rect (&self->clip.rect.bounds, &clip))
{
self->clip.type = GSK_GPU_CLIP_NONE;
}
self->scissor = scissor;
self->pending_globals |= GSK_GPU_GLOBAL_SCISSOR | GSK_GPU_GLOBAL_CLIP;
gsk_gpu_node_processor_add_node (self, node);
gsk_gpu_clip_init_copy (&self->clip, &old_clip);
self->scissor = old_scissor;
self->pending_globals |= GSK_GPU_GLOBAL_SCISSOR | GSK_GPU_GLOBAL_CLIP;
}
else
{
self->scissor = scissor;
self->pending_globals |= GSK_GPU_GLOBAL_SCISSOR;
gsk_gpu_clip_init_copy (&self->clip, &old_clip);
gsk_gpu_node_processor_add_node (self, node);
self->scissor = old_scissor;
self->pending_globals |= GSK_GPU_GLOBAL_SCISSOR;
}
}
else
{
if (!gsk_gpu_clip_intersect_rect (&self->clip, &old_clip, &clip))
{
gsk_gpu_clip_init_copy (&self->clip, &old_clip);
gsk_gpu_node_processor_sync_globals (self, 0);
if (!gsk_gpu_node_processor_ubershader_instead_of_offscreen (self, node) ||
!gsk_gpu_node_processor_try_node_as_pattern (self, node))
{
GskGpuImage *image;
graphene_rect_t bounds, tex_rect;
if (gsk_gpu_node_processor_clip_node_bounds (self, node, &bounds) &&
gsk_rect_intersection (&bounds, clip_bounds, &bounds))
image = gsk_gpu_node_processor_get_node_as_image (self,
0,
0,
&bounds,
node,
&tex_rect);
else
image = NULL;
if (image)
{
gsk_gpu_node_processor_image_op (self,
image,
&bounds,
&tex_rect);
g_object_unref (image);
}
}
return;
}
if (self->clip.type == GSK_GPU_CLIP_ALL_CLIPPED)
{
gsk_gpu_clip_init_copy (&self->clip, &old_clip);
return;
}
self->pending_globals |= GSK_GPU_GLOBAL_CLIP;
gsk_gpu_node_processor_add_node (self, node);
gsk_gpu_clip_init_copy (&self->clip, &old_clip);
self->pending_globals |= GSK_GPU_GLOBAL_CLIP;
}
}
static void
gsk_gpu_node_processor_add_clip_node (GskGpuNodeProcessor *self,
GskRenderNode *node)
{
gsk_gpu_node_processor_add_node_clipped (self,
gsk_clip_node_get_child (node),
gsk_clip_node_get_clip (node));
}
static gboolean
gsk_gpu_node_processor_create_clip_pattern (GskGpuPatternWriter *self,
GskRenderNode *node)
{
if (!gsk_gpu_node_processor_create_node_pattern (self, gsk_opacity_node_get_child (node)))
return FALSE;
gsk_gpu_pattern_writer_append_uint (self, GSK_GPU_PATTERN_CLIP);
gsk_gpu_pattern_writer_append_rect (self,
gsk_clip_node_get_clip (node),
&self->offset);
return TRUE;
}
static void
gsk_gpu_node_processor_add_rounded_clip_node_with_mask (GskGpuNodeProcessor *self,
GskRenderNode *node)
{
GskGpuNodeProcessor other;
graphene_rect_t clip_bounds, child_rect;
GskGpuImage *child_image, *mask_image;
guint32 descriptors[2];
if (!gsk_gpu_node_processor_clip_node_bounds (self, node, &clip_bounds))
return;
rect_round_to_pixels (&clip_bounds, &self->scale, &self->offset, &clip_bounds);
child_image = gsk_gpu_node_processor_get_node_as_image (self,
0,
GSK_GPU_IMAGE_STRAIGHT_ALPHA,
&clip_bounds,
gsk_rounded_clip_node_get_child (node),
&child_rect);
if (child_image == NULL)
return;
mask_image = gsk_gpu_node_processor_init_draw (&other,
self->frame,
gsk_render_node_get_preferred_depth (node),
&self->scale,
&clip_bounds);
gsk_gpu_node_processor_sync_globals (&other, 0);
gsk_gpu_rounded_color_op (other.frame,
gsk_gpu_clip_get_shader_clip (&other.clip, &other.offset, &node->bounds),
gsk_rounded_clip_node_get_clip (node),
&other.offset,
&GDK_RGBA_WHITE);
gsk_gpu_node_processor_finish_draw (&other, mask_image);
gsk_gpu_node_processor_add_images (self,
2,
(GskGpuImage *[2]) { child_image, mask_image },
(GskGpuSampler[2]) { GSK_GPU_SAMPLER_DEFAULT, GSK_GPU_SAMPLER_DEFAULT },
descriptors);
gsk_gpu_node_processor_sync_globals (self, 0);
gsk_gpu_mask_op (self->frame,
gsk_gpu_clip_get_shader_clip (&self->clip, &self->offset, &clip_bounds),
self->desc,
&clip_bounds,
&self->offset,
self->opacity,
GSK_MASK_MODE_ALPHA,
descriptors[0],
&child_rect,
descriptors[1],
&clip_bounds);
g_object_unref (child_image);
g_object_unref (mask_image);
}
static void
gsk_gpu_node_processor_add_rounded_clip_node (GskGpuNodeProcessor *self,
GskRenderNode *node)
{
GskGpuClip old_clip;
GskRoundedRect clip;
const GskRoundedRect *original_clip;
GskRenderNode *child;
child = gsk_rounded_clip_node_get_child (node);
original_clip = gsk_rounded_clip_node_get_clip (node);
/* Common case for entries etc: rounded solid color background.
* And we have a shader for that */
if (gsk_render_node_get_node_type (child) == GSK_COLOR_NODE &&
gsk_rect_contains_rect (&child->bounds, &original_clip->bounds))
{
const GdkRGBA *rgba = gsk_color_node_get_color (child);
gsk_gpu_node_processor_sync_globals (self, 0);
gsk_gpu_rounded_color_op (self->frame,
gsk_gpu_clip_get_shader_clip (&self->clip, &self->offset, &original_clip->bounds),
original_clip,
&self->offset,
&GDK_RGBA_INIT_ALPHA (rgba, self->opacity));
return;
}
gsk_gpu_clip_init_copy (&old_clip, &self->clip);
clip = *original_clip;
gsk_rounded_rect_offset (&clip, self->offset.x, self->offset.y);
if (!gsk_gpu_clip_intersect_rounded_rect (&self->clip, &old_clip, &clip))
{
gsk_gpu_clip_init_copy (&self->clip, &old_clip);
gsk_gpu_node_processor_add_rounded_clip_node_with_mask (self, node);
return;
}
if (self->clip.type == GSK_GPU_CLIP_ALL_CLIPPED)
{
gsk_gpu_clip_init_copy (&self->clip, &old_clip);
return;
}
self->pending_globals |= GSK_GPU_GLOBAL_CLIP;
gsk_gpu_node_processor_add_node (self, gsk_rounded_clip_node_get_child (node));
gsk_gpu_clip_init_copy (&self->clip, &old_clip);
self->pending_globals |= GSK_GPU_GLOBAL_CLIP;
}
static void
gsk_gpu_node_processor_add_transform_node (GskGpuNodeProcessor *self,
GskRenderNode *node)
{
GskRenderNode *child;
GskTransform *transform;
graphene_point_t old_offset;
graphene_vec2_t old_scale;
GskTransform *old_modelview;
GskGpuClip old_clip;
child = gsk_transform_node_get_child (node);
transform = gsk_transform_node_get_transform (node);
switch (gsk_transform_get_category (transform))
{
case GSK_TRANSFORM_CATEGORY_IDENTITY:
case GSK_TRANSFORM_CATEGORY_2D_TRANSLATE:
{
float dx, dy;
gsk_transform_to_translate (transform, &dx, &dy);
old_offset = self->offset;
self->offset.x += dx;
self->offset.y += dy;
gsk_gpu_node_processor_add_node (self, child);
self->offset = old_offset;
}
return;
case GSK_TRANSFORM_CATEGORY_2D_AFFINE:
{
float dx, dy, scale_x, scale_y;
gsk_gpu_clip_init_copy (&old_clip, &self->clip);
old_offset = self->offset;
old_scale = self->scale;
old_modelview = gsk_transform_ref (self->modelview);
gsk_transform_to_affine (transform, &scale_x, &scale_y, &dx, &dy);
gsk_gpu_clip_scale (&self->clip, &old_clip, scale_x, scale_y);
self->offset.x = (self->offset.x + dx) / scale_x;
self->offset.y = (self->offset.y + dy) / scale_y;
graphene_vec2_init (&self->scale, fabs (scale_x), fabs (scale_y));
graphene_vec2_multiply (&self->scale, &old_scale, &self->scale);
self->modelview = gsk_transform_scale (self->modelview,
scale_x / fabs (scale_x),
scale_y / fabs (scale_y));
}
break;
case GSK_TRANSFORM_CATEGORY_2D:
case GSK_TRANSFORM_CATEGORY_UNKNOWN:
case GSK_TRANSFORM_CATEGORY_ANY:
case GSK_TRANSFORM_CATEGORY_3D:
{
GskTransform *clip_transform;
float scale_x, scale_y, old_pixels, new_pixels;
clip_transform = gsk_transform_transform (gsk_transform_translate (NULL, &self->offset), transform);
gsk_gpu_clip_init_copy (&old_clip, &self->clip);
if (gsk_gpu_clip_contains_rect (&self->clip, &self->offset, &node->bounds))
{
gsk_gpu_clip_init_contained (&self->clip, &child->bounds);
}
else if (old_clip.type == GSK_GPU_CLIP_NONE)
{
GskTransform *inverse;
graphene_rect_t new_bounds;
inverse = gsk_transform_invert (gsk_transform_ref (clip_transform));
gsk_transform_transform_bounds (inverse, &old_clip.rect.bounds, &new_bounds);
gsk_transform_unref (inverse);
gsk_gpu_clip_init_empty (&self->clip, &new_bounds);
}
else if (!gsk_gpu_clip_transform (&self->clip, &old_clip, clip_transform, &child->bounds))
{
GskGpuImage *image;
graphene_rect_t tex_rect;
gsk_transform_unref (clip_transform);
/* This cannot loop because the next time we'll hit the branch above */
gsk_gpu_node_processor_sync_globals (self, 0);
image = gsk_gpu_node_processor_get_node_as_image (self,
0,
0,
NULL,
node,
&tex_rect);
if (image != NULL)
{
gsk_gpu_node_processor_image_op (self,
image,
&node->bounds,
&tex_rect);
g_object_unref (image);
}
return;
}
old_offset = self->offset;
old_scale = self->scale;
old_modelview = gsk_transform_ref (self->modelview);
self->modelview = gsk_transform_scale (self->modelview,
graphene_vec2_get_x (&self->scale),
graphene_vec2_get_y (&self->scale));
self->modelview = gsk_transform_transform (self->modelview, clip_transform);
gsk_transform_unref (clip_transform);
extract_scale_from_transform (self->modelview, &scale_x, &scale_y);
old_pixels = MAX (graphene_vec2_get_x (&old_scale) * old_clip.rect.bounds.size.width,
graphene_vec2_get_y (&old_scale) * old_clip.rect.bounds.size.height);
new_pixels = MAX (scale_x * self->clip.rect.bounds.size.width,
scale_y * self->clip.rect.bounds.size.height);
/* Check that our offscreen doesn't get too big. 1.5 ~ sqrt(2) */
if (new_pixels > 1.5 * old_pixels)
{
float forced_downscale = 2 * old_pixels / new_pixels;
scale_x *= forced_downscale;
scale_y *= forced_downscale;
}
self->modelview = gsk_transform_scale (self->modelview, 1 / scale_x, 1 / scale_y);
graphene_vec2_init (&self->scale, scale_x, scale_y);
self->offset = *graphene_point_zero ();
}
break;
default:
g_assert_not_reached ();
break;
}
self->pending_globals |= GSK_GPU_GLOBAL_MATRIX | GSK_GPU_GLOBAL_SCALE | GSK_GPU_GLOBAL_CLIP;
gsk_gpu_node_processor_add_node (self, child);
self->offset = old_offset;
self->scale = old_scale;
gsk_transform_unref (self->modelview);
self->modelview = old_modelview;
gsk_gpu_clip_init_copy (&self->clip, &old_clip);
self->pending_globals |= GSK_GPU_GLOBAL_MATRIX | GSK_GPU_GLOBAL_SCALE | GSK_GPU_GLOBAL_CLIP;
}
static gboolean
gsk_gpu_node_processor_create_transform_pattern (GskGpuPatternWriter *self,
GskRenderNode *node)
{
GskRenderNode *child;
GskTransform *transform;
graphene_point_t old_offset;
graphene_vec2_t old_scale;
graphene_rect_t old_bounds;
gboolean result;
child = gsk_transform_node_get_child (node);
transform = gsk_transform_node_get_transform (node);
old_offset = self->offset;
old_scale = self->scale;
old_bounds = self->bounds;
switch (gsk_transform_get_category (transform))
{
case GSK_TRANSFORM_CATEGORY_IDENTITY:
return gsk_gpu_node_processor_create_node_pattern (self, child);
case GSK_TRANSFORM_CATEGORY_2D_TRANSLATE:
{
float dx, dy;
gsk_transform_to_translate (transform, &dx, &dy);
self->offset.x += dx;
self->offset.y += dy;
result = gsk_gpu_node_processor_create_node_pattern (self, child);
self->offset = old_offset;
return result;
}
case GSK_TRANSFORM_CATEGORY_2D_AFFINE:
{
float sx, sy, dx, dy, inv_sx, inv_sy;
graphene_vec4_t vec4;
if (!gsk_gpu_pattern_writer_push_stack (self))
return FALSE;
gsk_transform_to_affine (transform, &sx, &sy, &dx, &dy);
inv_sx = 1.f / sx;
inv_sy = 1.f / sy;
gsk_gpu_pattern_writer_append_uint (self, GSK_GPU_PATTERN_AFFINE);
graphene_vec4_init (&vec4, self->offset.x + dx, self->offset.y + dy, inv_sx, inv_sy);
gsk_gpu_pattern_writer_append_vec4 (self, &vec4);
self->bounds.origin.x = (self->bounds.origin.x - self->offset.x - dx) * inv_sx;
self->bounds.origin.y = (self->bounds.origin.y - self->offset.y - dy) * inv_sy;
self->bounds.size.width *= inv_sx;
self->bounds.size.height *= inv_sy;
self->offset = GRAPHENE_POINT_INIT (0, 0);
graphene_vec2_init (&self->scale, fabs (sx), fabs (sy));
graphene_vec2_multiply (&self->scale, &old_scale, &self->scale);
}
break;
case GSK_TRANSFORM_CATEGORY_2D:
case GSK_TRANSFORM_CATEGORY_UNKNOWN:
case GSK_TRANSFORM_CATEGORY_ANY:
case GSK_TRANSFORM_CATEGORY_3D:
/* could add a mat4 operation here? */
return FALSE;
default:
g_assert_not_reached ();
return FALSE;
}
result = gsk_gpu_node_processor_create_node_pattern (self, child);
if (result)
gsk_gpu_pattern_writer_append_uint (self, GSK_GPU_PATTERN_POSITION_POP);
gsk_gpu_pattern_writer_pop_stack (self);
self->scale = old_scale;
self->bounds = old_bounds;
self->offset = old_offset;
return result;
}
static void
gsk_gpu_node_processor_add_opacity_node (GskGpuNodeProcessor *self,
GskRenderNode *node)
{
float old_opacity = self->opacity;
self->opacity *= gsk_opacity_node_get_opacity (node);
gsk_gpu_node_processor_add_node (self, gsk_opacity_node_get_child (node));
self->opacity = old_opacity;
}
static void
gsk_gpu_node_processor_add_color_node (GskGpuNodeProcessor *self,
GskRenderNode *node)
{
cairo_rectangle_int_t int_clipped;
graphene_rect_t rect, clipped;
const GdkRGBA *color;
color = gsk_color_node_get_color (node);
graphene_rect_offset_r (&node->bounds,
self->offset.x, self->offset.y,
&rect);
gsk_rect_intersection (&self->clip.rect.bounds, &rect, &clipped);
if (gsk_gpu_frame_should_optimize (self->frame, GSK_GPU_OPTIMIZE_CLEAR) &&
gdk_rgba_is_opaque (color) &&
self->opacity >= 1.0 &&
node->bounds.size.width * node->bounds.size.height > 100 * 100 && /* not worth the effort for small images */
gsk_gpu_node_processor_rect_is_integer (self, &clipped, &int_clipped))
{
/* now handle all the clip */
if (!gdk_rectangle_intersect (&int_clipped, &self->scissor, &int_clipped))
return;
/* we have handled the bounds, now do the corners */
if (self->clip.type == GSK_GPU_CLIP_ROUNDED)
{
graphene_rect_t cover;
GskGpuShaderClip shader_clip;
float scale_x, scale_y;
if (self->modelview)
{
/* Yuck, rounded clip and modelview. I give up. */
gsk_gpu_color_op (self->frame,
gsk_gpu_clip_get_shader_clip (&self->clip, &self->offset, &node->bounds),
&node->bounds,
&self->offset,
gsk_color_node_get_color (node));
return;
}
scale_x = graphene_vec2_get_x (&self->scale);
scale_y = graphene_vec2_get_y (&self->scale);
clipped = GRAPHENE_RECT_INIT (int_clipped.x / scale_x, int_clipped.y / scale_y,
int_clipped.width / scale_x, int_clipped.height / scale_y);
shader_clip = gsk_gpu_clip_get_shader_clip (&self->clip, graphene_point_zero(), &clipped);
if (shader_clip != GSK_GPU_SHADER_CLIP_NONE)
{
gsk_rounded_rect_get_largest_cover (&self->clip.rect, &clipped, &cover);
int_clipped.x = ceilf (cover.origin.x * scale_x);
int_clipped.y = ceilf (cover.origin.y * scale_y);
int_clipped.width = floorf ((cover.origin.x + cover.size.width) * scale_x) - int_clipped.x;
int_clipped.height = floorf ((cover.origin.y + cover.size.height) * scale_y) - int_clipped.y;
if (int_clipped.width == 0 || int_clipped.height == 0)
{
gsk_gpu_color_op (self->frame,
shader_clip,
&clipped,
graphene_point_zero (),
color);
return;
}
cover = GRAPHENE_RECT_INIT (int_clipped.x / scale_x, int_clipped.y / scale_y,
int_clipped.width / scale_x, int_clipped.height / scale_y);
if (clipped.origin.x != cover.origin.x)
gsk_gpu_color_op (self->frame,
shader_clip,
&GRAPHENE_RECT_INIT (clipped.origin.x, clipped.origin.y, cover.origin.x - clipped.origin.x, clipped.size.height),
graphene_point_zero (),
color);
if (clipped.origin.y != cover.origin.y)
gsk_gpu_color_op (self->frame,
shader_clip,
&GRAPHENE_RECT_INIT (clipped.origin.x, clipped.origin.y, clipped.size.width, cover.origin.y - clipped.origin.y),
graphene_point_zero (),
color);
if (clipped.origin.x + clipped.size.width != cover.origin.x + cover.size.width)
gsk_gpu_color_op (self->frame,
shader_clip,
&GRAPHENE_RECT_INIT (cover.origin.x + cover.size.width,
clipped.origin.y,
clipped.origin.x + clipped.size.width - cover.origin.x - cover.size.width,
clipped.size.height),
graphene_point_zero (),
color);
if (clipped.origin.y + clipped.size.height != cover.origin.y + cover.size.height)
gsk_gpu_color_op (self->frame,
shader_clip,
&GRAPHENE_RECT_INIT (clipped.origin.x,
cover.origin.y + cover.size.height,
clipped.size.width,
clipped.origin.y + clipped.size.height - cover.origin.y - cover.size.height),
graphene_point_zero (),
color);
}
}
gsk_gpu_clear_op (self->frame,
&int_clipped,
color);
return;
}
gsk_gpu_color_op (self->frame,
gsk_gpu_clip_get_shader_clip (&self->clip, &self->offset, &node->bounds),
&node->bounds,
&self->offset,
&GDK_RGBA_INIT_ALPHA (color, self->opacity));
}
static gboolean
gsk_gpu_node_processor_create_color_pattern (GskGpuPatternWriter *self,
GskRenderNode *node)
{
gsk_gpu_pattern_writer_append_uint (self, GSK_GPU_PATTERN_COLOR);
gsk_gpu_pattern_writer_append_rgba (self, gsk_color_node_get_color (node));
return TRUE;
}
static void
gsk_gpu_node_processor_add_border_node (GskGpuNodeProcessor *self,
GskRenderNode *node)
{
GdkRGBA colors[4];
gsize i;
memcpy (colors, gsk_border_node_get_colors (node), sizeof (colors));
for (i = 0; i < G_N_ELEMENTS (colors); i++)
colors[i].alpha *= self->opacity;
gsk_gpu_border_op (self->frame,
gsk_gpu_clip_get_shader_clip (&self->clip, &self->offset, &node->bounds),
gsk_border_node_get_outline (node),
&self->offset,
graphene_point_zero (),
gsk_border_node_get_widths (node),
colors);
}
static void
gsk_gpu_node_processor_add_texture_node (GskGpuNodeProcessor *self,
GskRenderNode *node)
{
GskGpuDevice *device;
GskGpuImage *image;
GdkTexture *texture;
gint64 timestamp;
device = gsk_gpu_frame_get_device (self->frame);
texture = gsk_texture_node_get_texture (node);
timestamp = gsk_gpu_frame_get_timestamp (self->frame);
image = gsk_gpu_device_lookup_texture_image (device, texture, timestamp);
if (image == NULL)
{
image = gsk_gpu_frame_upload_texture (self->frame, FALSE, texture);
if (image == NULL)
{
GSK_DEBUG (FALLBACK, "Unsupported texture format %u for size %dx%d",
gdk_texture_get_format (texture),
gdk_texture_get_width (texture),
gdk_texture_get_height (texture));
gsk_gpu_node_processor_add_fallback_node (self, node);
return;
}
}
if (gsk_gpu_frame_should_optimize (self->frame, GSK_GPU_OPTIMIZE_MIPMAP) &&
(gdk_texture_get_width (texture) > 2 * node->bounds.size.width * graphene_vec2_get_x (&self->scale) ||
gdk_texture_get_height (texture) > 2 * node->bounds.size.height * graphene_vec2_get_y (&self->scale)))
{
guint32 descriptor;
image = gsk_gpu_node_processor_ensure_image (self->frame,
image,
GSK_GPU_IMAGE_MIPMAP,
GSK_GPU_IMAGE_STRAIGHT_ALPHA);
descriptor = gsk_gpu_node_processor_add_image (self, image, GSK_GPU_SAMPLER_MIPMAP_DEFAULT);
if (self->opacity < 1.0)
{
gsk_gpu_color_matrix_op_opacity (self->frame,
gsk_gpu_clip_get_shader_clip (&self->clip, &self->offset, &node->bounds),
self->desc,
descriptor,
&node->bounds,
&self->offset,
&node->bounds,
self->opacity);
}
else
{
gsk_gpu_texture_op (self->frame,
gsk_gpu_clip_get_shader_clip (&self->clip, &self->offset, &node->bounds),
self->desc,
descriptor,
&node->bounds,
&self->offset,
&node->bounds);
}
}
else
{
gsk_gpu_node_processor_image_op (self,
image,
&node->bounds,
&node->bounds);
}
g_object_unref (image);
}
static gboolean
gsk_gpu_node_processor_create_texture_pattern (GskGpuPatternWriter *self,
GskRenderNode *node)
{
GskGpuDevice *device;
GdkTexture *texture;
gint64 timestamp;
guint32 descriptor;
GskGpuImage *image;
GskGpuSampler sampler;
device = gsk_gpu_frame_get_device (self->frame);
texture = gsk_texture_node_get_texture (node);
timestamp = gsk_gpu_frame_get_timestamp (self->frame);
image = gsk_gpu_device_lookup_texture_image (device, texture, timestamp);
if (image == NULL)
{
image = gsk_gpu_frame_upload_texture (self->frame, FALSE, texture);
if (image == NULL)
return FALSE;
}
if (gsk_gpu_frame_should_optimize (self->frame, GSK_GPU_OPTIMIZE_MIPMAP) &&
(gdk_texture_get_width (texture) > 2 * node->bounds.size.width * graphene_vec2_get_x (&self->scale) ||
gdk_texture_get_height (texture) > 2 * node->bounds.size.height * graphene_vec2_get_y (&self->scale)))
{
image = gsk_gpu_node_processor_ensure_image (self->frame,
image,
GSK_GPU_IMAGE_MIPMAP,
GSK_GPU_IMAGE_STRAIGHT_ALPHA);
sampler = GSK_GPU_SAMPLER_MIPMAP_DEFAULT;
}
else
{
sampler = GSK_GPU_SAMPLER_DEFAULT;
}
if (!gsk_gpu_pattern_writer_add_image (self, image, sampler, &descriptor))
{
g_object_unref (image);
return FALSE;
}
if (gsk_gpu_image_get_flags (image) & GSK_GPU_IMAGE_STRAIGHT_ALPHA)
gsk_gpu_pattern_writer_append_uint (self, GSK_GPU_PATTERN_STRAIGHT_ALPHA);
else
gsk_gpu_pattern_writer_append_uint (self, GSK_GPU_PATTERN_TEXTURE);
gsk_gpu_pattern_writer_append_uint (self, descriptor);
gsk_gpu_pattern_writer_append_rect (self, &node->bounds, &self->offset);
g_object_unref (image);
return TRUE;
}
static void
gsk_gpu_node_processor_add_texture_scale_node (GskGpuNodeProcessor *self,
GskRenderNode *node)
{
GskGpuDevice *device;
GskGpuImage *image;
GdkTexture *texture;
GskScalingFilter scaling_filter;
gint64 timestamp;
guint32 descriptor;
gboolean need_mipmap, need_offscreen;
need_offscreen = self->modelview != NULL ||
!graphene_vec2_equal (&self->scale, graphene_vec2_one ());
if (need_offscreen)
{
GskGpuImage *offscreen;
graphene_rect_t clip_bounds;
gsk_gpu_node_processor_get_clip_bounds (self, &clip_bounds);
/* first round to pixel boundaries, so we make sure the full pixels are covered */
rect_round_to_pixels (&clip_bounds, &self->scale, &self->offset, &clip_bounds);
/* then expand by half a pixel so that pixels needed for eventual linear
* filtering are available */
graphene_rect_inset (&clip_bounds, -0.5, -0.5);
/* finally, round to full pixels */
gsk_rect_round_larger (&clip_bounds);
/* now intersect with actual node bounds */
if (!gsk_rect_intersection (&clip_bounds, &node->bounds, &clip_bounds))
return;
clip_bounds.size.width = ceilf (clip_bounds.size.width);
clip_bounds.size.height = ceilf (clip_bounds.size.height);
offscreen = gsk_gpu_node_processor_create_offscreen (self->frame,
graphene_vec2_one (),
&clip_bounds,
node);
descriptor = gsk_gpu_node_processor_add_image (self, offscreen, GSK_GPU_SAMPLER_DEFAULT);
gsk_gpu_texture_op (self->frame,
gsk_gpu_clip_get_shader_clip (&self->clip, &self->offset, &node->bounds),
self->desc,
descriptor,
&node->bounds,
&self->offset,
&clip_bounds);
g_object_unref (offscreen);
return;
}
device = gsk_gpu_frame_get_device (self->frame);
texture = gsk_texture_scale_node_get_texture (node);
scaling_filter = gsk_texture_scale_node_get_filter (node);
timestamp = gsk_gpu_frame_get_timestamp (self->frame);
need_mipmap = scaling_filter == GSK_SCALING_FILTER_TRILINEAR;
image = gsk_gpu_device_lookup_texture_image (device, texture, timestamp);
if (image == NULL)
{
image = gsk_gpu_frame_upload_texture (self->frame, need_mipmap, texture);
if (image == NULL)
{
GSK_DEBUG (FALLBACK, "Unsupported texture format %u for size %dx%d",
gdk_texture_get_format (texture),
gdk_texture_get_width (texture),
gdk_texture_get_height (texture));
gsk_gpu_node_processor_add_fallback_node (self, node);
return;
}
}
image = gsk_gpu_node_processor_ensure_image (self->frame,
image,
need_mipmap ? (GSK_GPU_IMAGE_CAN_MIPMAP | GSK_GPU_IMAGE_MIPMAP) : 0,
GSK_GPU_IMAGE_STRAIGHT_ALPHA);
switch (scaling_filter)
{
case GSK_SCALING_FILTER_LINEAR:
descriptor = gsk_gpu_node_processor_add_image (self, image, GSK_GPU_SAMPLER_DEFAULT);
break;
case GSK_SCALING_FILTER_NEAREST:
descriptor = gsk_gpu_node_processor_add_image (self, image, GSK_GPU_SAMPLER_NEAREST);
break;
case GSK_SCALING_FILTER_TRILINEAR:
descriptor = gsk_gpu_node_processor_add_image (self, image, GSK_GPU_SAMPLER_MIPMAP_DEFAULT);
break;
default:
g_assert_not_reached ();
return;
}
gsk_gpu_texture_op (self->frame,
gsk_gpu_clip_get_shader_clip (&self->clip, &self->offset, &node->bounds),
self->desc,
descriptor,
&node->bounds,
&self->offset,
&node->bounds);
g_object_unref (image);
}
static void
gsk_gpu_node_processor_add_inset_shadow_node (GskGpuNodeProcessor *self,
GskRenderNode *node)
{
GdkRGBA color;
float spread, blur_radius;
spread = gsk_inset_shadow_node_get_spread (node);
color = *gsk_inset_shadow_node_get_color (node);
color.alpha *= self->opacity;
blur_radius = gsk_inset_shadow_node_get_blur_radius (node);
if (blur_radius == 0)
{
gsk_gpu_border_op (self->frame,
gsk_gpu_clip_get_shader_clip (&self->clip, &self->offset, &node->bounds),
gsk_inset_shadow_node_get_outline (node),
&self->offset,
&GRAPHENE_POINT_INIT (gsk_inset_shadow_node_get_dx (node),
gsk_inset_shadow_node_get_dy (node)),
(float[4]) { spread, spread, spread, spread },
(GdkRGBA[4]) { color, color, color, color });
}
else
{
gsk_gpu_box_shadow_op (self->frame,
gsk_gpu_clip_get_shader_clip (&self->clip, &self->offset, &node->bounds),
TRUE,
&node->bounds,
gsk_inset_shadow_node_get_outline (node),
&GRAPHENE_POINT_INIT (gsk_inset_shadow_node_get_dx (node),
gsk_inset_shadow_node_get_dy (node)),
spread,
blur_radius,
&self->offset,
&color);
}
}
static void
gsk_gpu_node_processor_add_outset_shadow_node (GskGpuNodeProcessor *self,
GskRenderNode *node)
{
GdkRGBA color;
float spread, blur_radius, dx, dy;
spread = gsk_outset_shadow_node_get_spread (node);
color = *gsk_outset_shadow_node_get_color (node);
color.alpha *= self->opacity;
blur_radius = gsk_outset_shadow_node_get_blur_radius (node);
dx = gsk_outset_shadow_node_get_dx (node);
dy = gsk_outset_shadow_node_get_dy (node);
if (blur_radius == 0)
{
GskRoundedRect outline;
gsk_rounded_rect_init_copy (&outline, gsk_outset_shadow_node_get_outline (node));
gsk_rounded_rect_shrink (&outline, -spread, -spread, -spread, -spread);
graphene_rect_offset (&outline.bounds, dx, dy);
gsk_gpu_border_op (self->frame,
gsk_gpu_clip_get_shader_clip (&self->clip, &self->offset, &node->bounds),
&outline,
&self->offset,
&GRAPHENE_POINT_INIT (-dx, -dy),
(float[4]) { spread, spread, spread, spread },
(GdkRGBA[4]) { color, color, color, color });
}
else
{
gsk_gpu_box_shadow_op (self->frame,
gsk_gpu_clip_get_shader_clip (&self->clip, &self->offset, &node->bounds),
FALSE,
&node->bounds,
gsk_outset_shadow_node_get_outline (node),
&GRAPHENE_POINT_INIT (dx, dy),
spread,
blur_radius,
&self->offset,
&color);
}
}
typedef void (* GradientOpFunc) (GskGpuNodeProcessor *self,
GskRenderNode *node,
const GskColorStop *stops,
gsize n_stops);
static void
gsk_gpu_node_processor_add_gradient_node (GskGpuNodeProcessor *self,
GskRenderNode *node,
const GskColorStop *stops,
gsize n_stops,
GradientOpFunc func)
{
GskColorStop real_stops[7];
GskGpuNodeProcessor other;
graphene_rect_t bounds;
gsize i, j;
GskGpuImage *image;
guint32 descriptor;
if (n_stops < 8)
{
if (self->opacity < 1.0)
{
for (i = 0; i < n_stops; i++)
{
real_stops[i].offset = stops[i].offset;
real_stops[i].color = GDK_RGBA_INIT_ALPHA (&stops[i].color, self->opacity);
}
stops = real_stops;
}
func (self, node, stops, n_stops);
return;
}
if (gsk_gpu_node_processor_try_node_as_pattern (self, node))
return;
if (!gsk_gpu_node_processor_clip_node_bounds (self, node, &bounds))
return;
rect_round_to_pixels (&bounds, &self->scale, &self->offset, &bounds);
image = gsk_gpu_node_processor_init_draw (&other,
self->frame,
gsk_render_node_get_preferred_depth (node),
&self->scale,
&bounds);
other.blend = GSK_GPU_BLEND_ADD;
other.pending_globals |= GSK_GPU_GLOBAL_BLEND;
gsk_gpu_node_processor_sync_globals (&other, 0);
for (i = 0; i < n_stops; /* happens inside the loop */)
{
if (i == 0)
{
real_stops[0].offset = stops[i].offset;
real_stops[0].color = GDK_RGBA_INIT_ALPHA (&stops[i].color, self->opacity);
i++;
}
else
{
real_stops[0].offset = stops[i-1].offset;
real_stops[0].color = GDK_RGBA_INIT_ALPHA (&stops[i-1].color, 0);
}
for (j = 1; j < 6 && i < n_stops; j++)
{
real_stops[j].offset = stops[i].offset;
real_stops[j].color = GDK_RGBA_INIT_ALPHA (&stops[i].color, self->opacity);
i++;
}
if (i == n_stops - 1)
{
g_assert (j == 6);
real_stops[j].offset = stops[i].offset;
real_stops[j].color = GDK_RGBA_INIT_ALPHA (&stops[i].color, self->opacity);
j++;
i++;
}
else if (i < n_stops)
{
real_stops[j].offset = stops[i].offset;
real_stops[j].color = GDK_RGBA_INIT_ALPHA (&stops[i].color, 0);
j++;
}
func (&other, node, real_stops, j);
}
gsk_gpu_node_processor_finish_draw (&other, image);
descriptor = gsk_gpu_node_processor_add_image (self, image, GSK_GPU_SAMPLER_DEFAULT);
gsk_gpu_texture_op (self->frame,
gsk_gpu_clip_get_shader_clip (&self->clip, &self->offset, &bounds),
self->desc,
descriptor,
&node->bounds,
&self->offset,
&bounds);
g_object_unref (image);
}
static void
gsk_gpu_node_processor_linear_gradient_op (GskGpuNodeProcessor *self,
GskRenderNode *node,
const GskColorStop *stops,
gsize n_stops)
{
gsk_gpu_linear_gradient_op (self->frame,
gsk_gpu_clip_get_shader_clip (&self->clip, &self->offset, &node->bounds),
GSK_RENDER_NODE_TYPE (node) == GSK_REPEATING_LINEAR_GRADIENT_NODE,
&node->bounds,
gsk_linear_gradient_node_get_start (node),
gsk_linear_gradient_node_get_end (node),
&self->offset,
stops,
n_stops);
}
static void
gsk_gpu_node_processor_add_linear_gradient_node (GskGpuNodeProcessor *self,
GskRenderNode *node)
{
gsk_gpu_node_processor_add_gradient_node (self,
node,
gsk_linear_gradient_node_get_color_stops (node, NULL),
gsk_linear_gradient_node_get_n_color_stops (node),
gsk_gpu_node_processor_linear_gradient_op);
}
static gboolean
gsk_gpu_node_processor_create_linear_gradient_pattern (GskGpuPatternWriter *self,
GskRenderNode *node)
{
if (gsk_render_node_get_node_type (node) == GSK_REPEATING_LINEAR_GRADIENT_NODE)
gsk_gpu_pattern_writer_append_uint (self, GSK_GPU_PATTERN_REPEATING_LINEAR_GRADIENT);
else
gsk_gpu_pattern_writer_append_uint (self, GSK_GPU_PATTERN_LINEAR_GRADIENT);
gsk_gpu_pattern_writer_append_point (self,
gsk_linear_gradient_node_get_start (node),
&self->offset);
gsk_gpu_pattern_writer_append_point (self,
gsk_linear_gradient_node_get_end (node),
&self->offset);
gsk_gpu_pattern_writer_append_color_stops (self,
gsk_linear_gradient_node_get_color_stops (node, NULL),
gsk_linear_gradient_node_get_n_color_stops (node));
return TRUE;
}
static void
gsk_gpu_node_processor_radial_gradient_op (GskGpuNodeProcessor *self,
GskRenderNode *node,
const GskColorStop *stops,
gsize n_stops)
{
gsk_gpu_radial_gradient_op (self->frame,
gsk_gpu_clip_get_shader_clip (&self->clip, &self->offset, &node->bounds),
GSK_RENDER_NODE_TYPE (node) == GSK_REPEATING_RADIAL_GRADIENT_NODE,
&node->bounds,
gsk_radial_gradient_node_get_center (node),
&GRAPHENE_POINT_INIT (
gsk_radial_gradient_node_get_hradius (node),
gsk_radial_gradient_node_get_vradius (node)
),
gsk_radial_gradient_node_get_start (node),
gsk_radial_gradient_node_get_end (node),
&self->offset,
stops,
n_stops);
}
static void
gsk_gpu_node_processor_add_radial_gradient_node (GskGpuNodeProcessor *self,
GskRenderNode *node)
{
gsk_gpu_node_processor_add_gradient_node (self,
node,
gsk_radial_gradient_node_get_color_stops (node, NULL),
gsk_radial_gradient_node_get_n_color_stops (node),
gsk_gpu_node_processor_radial_gradient_op);
}
static gboolean
gsk_gpu_node_processor_create_radial_gradient_pattern (GskGpuPatternWriter *self,
GskRenderNode *node)
{
if (gsk_render_node_get_node_type (node) == GSK_REPEATING_RADIAL_GRADIENT_NODE)
gsk_gpu_pattern_writer_append_uint (self, GSK_GPU_PATTERN_REPEATING_RADIAL_GRADIENT);
else
gsk_gpu_pattern_writer_append_uint (self, GSK_GPU_PATTERN_RADIAL_GRADIENT);
gsk_gpu_pattern_writer_append_point (self,
gsk_radial_gradient_node_get_center (node),
&self->offset);
gsk_gpu_pattern_writer_append_float (self, gsk_radial_gradient_node_get_hradius (node));
gsk_gpu_pattern_writer_append_float (self, gsk_radial_gradient_node_get_vradius (node));
gsk_gpu_pattern_writer_append_float (self, gsk_radial_gradient_node_get_start (node));
gsk_gpu_pattern_writer_append_float (self, gsk_radial_gradient_node_get_end (node));
gsk_gpu_pattern_writer_append_color_stops (self,
gsk_radial_gradient_node_get_color_stops (node, NULL),
gsk_radial_gradient_node_get_n_color_stops (node));
return TRUE;
}
static void
gsk_gpu_node_processor_conic_gradient_op (GskGpuNodeProcessor *self,
GskRenderNode *node,
const GskColorStop *stops,
gsize n_stops)
{
gsk_gpu_conic_gradient_op (self->frame,
gsk_gpu_clip_get_shader_clip (&self->clip, &self->offset, &node->bounds),
&node->bounds,
gsk_conic_gradient_node_get_center (node),
gsk_conic_gradient_node_get_angle (node),
&self->offset,
stops,
n_stops);
}
static void
gsk_gpu_node_processor_add_conic_gradient_node (GskGpuNodeProcessor *self,
GskRenderNode *node)
{
gsk_gpu_node_processor_add_gradient_node (self,
node,
gsk_conic_gradient_node_get_color_stops (node, NULL),
gsk_conic_gradient_node_get_n_color_stops (node),
gsk_gpu_node_processor_conic_gradient_op);
}
static gboolean
gsk_gpu_node_processor_create_conic_gradient_pattern (GskGpuPatternWriter *self,
GskRenderNode *node)
{
gsk_gpu_pattern_writer_append_uint (self, GSK_GPU_PATTERN_CONIC_GRADIENT);
gsk_gpu_pattern_writer_append_point (self,
gsk_conic_gradient_node_get_center (node),
&self->offset);
gsk_gpu_pattern_writer_append_float (self, gsk_conic_gradient_node_get_angle (node));
gsk_gpu_pattern_writer_append_color_stops (self,
gsk_conic_gradient_node_get_color_stops (node, NULL),
gsk_conic_gradient_node_get_n_color_stops (node));
return TRUE;
}
static void
gsk_gpu_node_processor_add_blur_node (GskGpuNodeProcessor *self,
GskRenderNode *node)
{
GskRenderNode *child;
GskGpuImage *image;
graphene_rect_t tex_rect, clip_rect;
float blur_radius, clip_radius;
guint32 descriptor;
child = gsk_blur_node_get_child (node);
blur_radius = gsk_blur_node_get_radius (node);
if (blur_radius <= 0.f)
{
gsk_gpu_node_processor_add_node (self, child);
return;
}
clip_radius = gsk_cairo_blur_compute_pixels (blur_radius / 2.0);
gsk_gpu_node_processor_get_clip_bounds (self, &clip_rect);
graphene_rect_inset (&clip_rect, -clip_radius, -clip_radius);
image = gsk_gpu_node_processor_get_node_as_image (self,
0,
GSK_GPU_IMAGE_STRAIGHT_ALPHA,
&clip_rect,
child,
&tex_rect);
if (image == NULL)
return;
descriptor = gsk_gpu_node_processor_add_image (self, image, GSK_GPU_SAMPLER_TRANSPARENT);
gsk_gpu_node_processor_blur_op (self,
&node->bounds,
graphene_point_zero (),
blur_radius,
NULL,
self->desc,
descriptor,
gdk_memory_format_get_depth (gsk_gpu_image_get_format (image)),
&tex_rect);
g_object_unref (image);
}
static void
gsk_gpu_node_processor_add_shadow_node (GskGpuNodeProcessor *self,
GskRenderNode *node)
{
GskGpuImage *image;
graphene_rect_t clip_bounds, tex_rect;
GskRenderNode *child;
gsize i, n_shadows;
GskGpuDescriptors *desc;
guint32 descriptor;
n_shadows = gsk_shadow_node_get_n_shadows (node);
child = gsk_shadow_node_get_child (node);
/* enlarge clip for shadow offsets */
gsk_gpu_node_processor_get_clip_bounds (self, &clip_bounds);
clip_bounds = GRAPHENE_RECT_INIT (clip_bounds.origin.x - node->bounds.size.width + child->bounds.size.width - node->bounds.origin.x + child->bounds.origin.x,
clip_bounds.origin.y - node->bounds.size.height + child->bounds.size.height - node->bounds.origin.y + child->bounds.origin.y,
clip_bounds.size.width + node->bounds.size.width - child->bounds.size.width,
clip_bounds.size.height + node->bounds.size.height - child->bounds.size.height);
image = gsk_gpu_node_processor_get_node_as_image (self,
0,
GSK_GPU_IMAGE_STRAIGHT_ALPHA,
&clip_bounds,
child,
&tex_rect);
if (image == NULL)
return;
descriptor = gsk_gpu_node_processor_add_image (self, image, GSK_GPU_SAMPLER_TRANSPARENT);
desc = self->desc;
for (i = 0; i < n_shadows; i++)
{
const GskShadow *shadow = gsk_shadow_node_get_shadow (node, i);
if (shadow->radius == 0)
{
graphene_point_t shadow_offset = GRAPHENE_POINT_INIT (self->offset.x + shadow->dx,
self->offset.y + shadow->dy);
gsk_gpu_colorize_op (self->frame,
gsk_gpu_clip_get_shader_clip (&self->clip, &shadow_offset, &child->bounds),
desc,
descriptor,
&child->bounds,
&shadow_offset,
&tex_rect,
&shadow->color);
}
else
{
graphene_rect_t bounds;
float clip_radius = gsk_cairo_blur_compute_pixels (0.5 * shadow->radius);
graphene_rect_inset_r (&child->bounds, - clip_radius, - clip_radius, &bounds);
gsk_gpu_node_processor_blur_op (self,
&bounds,
&GRAPHENE_POINT_INIT (shadow->dx, shadow->dy),
shadow->radius,
&shadow->color,
desc,
descriptor,
gdk_memory_format_get_depth (gsk_gpu_image_get_format (image)),
&tex_rect);
}
}
descriptor = gsk_gpu_node_processor_add_image (self, image, GSK_GPU_SAMPLER_DEFAULT);
gsk_gpu_texture_op (self->frame,
gsk_gpu_clip_get_shader_clip (&self->clip, &self->offset, &child->bounds),
self->desc,
descriptor,
&child->bounds,
&self->offset,
&tex_rect);
g_object_unref (image);
}
static void
gsk_gpu_node_processor_add_blend_node (GskGpuNodeProcessor *self,
GskRenderNode *node)
{
GskRenderNode *bottom_child, *top_child;
graphene_rect_t bottom_rect, top_rect;
GskGpuImage *bottom_image, *top_image;
guint32 descriptors[2];
bottom_child = gsk_blend_node_get_bottom_child (node);
top_child = gsk_blend_node_get_top_child (node);
if ((gsk_gpu_node_processor_ubershader_instead_of_offscreen (self, bottom_child) ||
gsk_gpu_node_processor_ubershader_instead_of_offscreen (self, top_child)) &&
gsk_gpu_node_processor_try_node_as_pattern (self, node))
return;
bottom_image = gsk_gpu_node_processor_get_node_as_image (self,
0,
GSK_GPU_IMAGE_STRAIGHT_ALPHA,
NULL,
bottom_child,
&bottom_rect);
top_image = gsk_gpu_node_processor_get_node_as_image (self,
0,
GSK_GPU_IMAGE_STRAIGHT_ALPHA,
NULL,
top_child,
&top_rect);
if (bottom_image == NULL)
{
if (top_image == NULL)
return;
bottom_image = g_object_ref (top_image);
bottom_rect = *graphene_rect_zero ();
}
else if (top_image == NULL)
{
top_image = g_object_ref (bottom_image);
top_rect = *graphene_rect_zero ();
}
gsk_gpu_node_processor_add_images (self,
2,
(GskGpuImage *[2]) { bottom_image, top_image },
(GskGpuSampler[2]) { GSK_GPU_SAMPLER_DEFAULT, GSK_GPU_SAMPLER_DEFAULT },
descriptors);
gsk_gpu_blend_mode_op (self->frame,
gsk_gpu_clip_get_shader_clip (&self->clip, &self->offset, &node->bounds),
self->desc,
&node->bounds,
&self->offset,
self->opacity,
gsk_blend_node_get_blend_mode (node),
descriptors[0],
&bottom_rect,
descriptors[1],
&top_rect);
g_object_unref (top_image);
g_object_unref (bottom_image);
}
static gboolean
gsk_gpu_node_processor_create_blend_pattern (GskGpuPatternWriter *self,
GskRenderNode *node)
{
GskRenderNode *bottom_child, *top_child;
bottom_child = gsk_blend_node_get_bottom_child (node);
top_child = gsk_blend_node_get_top_child (node);
if (!gsk_gpu_node_processor_create_node_pattern (self, bottom_child))
return FALSE;
if (!gsk_rect_contains_rect (&bottom_child->bounds, &node->bounds))
{
gsk_gpu_pattern_writer_append_uint (self, GSK_GPU_PATTERN_CLIP);
gsk_gpu_pattern_writer_append_rect (self, &bottom_child->bounds, &self->offset);
}
gsk_gpu_pattern_writer_append_uint (self, GSK_GPU_PATTERN_PUSH_COLOR);
if (!gsk_gpu_pattern_writer_push_stack (self))
return FALSE;
if (!gsk_gpu_node_processor_create_node_pattern (self, top_child))
{
gsk_gpu_pattern_writer_pop_stack (self);
return FALSE;
}
if (!gsk_rect_contains_rect (&top_child->bounds, &node->bounds))
{
gsk_gpu_pattern_writer_append_uint (self, GSK_GPU_PATTERN_CLIP);
gsk_gpu_pattern_writer_append_rect (self, &top_child->bounds, &self->offset);
}
gsk_gpu_pattern_writer_append_uint (self, GSK_GPU_PATTERN_BLEND_DEFAULT + gsk_blend_node_get_blend_mode (node));
gsk_gpu_pattern_writer_pop_stack (self);
return TRUE;
}
static void
gsk_gpu_node_processor_add_cross_fade_node (GskGpuNodeProcessor *self,
GskRenderNode *node)
{
GskRenderNode *start_child, *end_child;
graphene_rect_t start_rect, end_rect;
GskGpuImage *start_image, *end_image;
guint32 descriptors[2];
float progress, old_opacity;
start_child = gsk_cross_fade_node_get_start_child (node);
end_child = gsk_cross_fade_node_get_end_child (node);
progress = gsk_cross_fade_node_get_progress (node);
if ((gsk_gpu_node_processor_ubershader_instead_of_offscreen (self, start_child) ||
gsk_gpu_node_processor_ubershader_instead_of_offscreen (self, end_child)) &&
gsk_gpu_node_processor_try_node_as_pattern (self, node))
return;
start_image = gsk_gpu_node_processor_get_node_as_image (self,
0,
GSK_GPU_IMAGE_STRAIGHT_ALPHA,
NULL,
start_child,
&start_rect);
end_image = gsk_gpu_node_processor_get_node_as_image (self,
0,
GSK_GPU_IMAGE_STRAIGHT_ALPHA,
NULL,
end_child,
&end_rect);
if (start_image == NULL)
{
if (end_image == NULL)
return;
old_opacity = self->opacity;
self->opacity *= progress;
gsk_gpu_node_processor_image_op (self,
end_image,
&end_child->bounds,
&end_rect);
g_object_unref (end_image);
self->opacity = old_opacity;
return;
}
else if (end_image == NULL)
{
old_opacity = self->opacity;
self->opacity *= (1 - progress);
gsk_gpu_node_processor_image_op (self,
start_image,
&start_child->bounds,
&start_rect);
g_object_unref (start_image);
self->opacity = old_opacity;
return;
}
gsk_gpu_node_processor_add_images (self,
2,
(GskGpuImage *[2]) { start_image, end_image },
(GskGpuSampler[2]) { GSK_GPU_SAMPLER_DEFAULT, GSK_GPU_SAMPLER_DEFAULT },
descriptors);
gsk_gpu_cross_fade_op (self->frame,
gsk_gpu_clip_get_shader_clip (&self->clip, &self->offset, &node->bounds),
self->desc,
&node->bounds,
&self->offset,
self->opacity,
progress,
descriptors[0],
&start_rect,
descriptors[1],
&end_rect);
g_object_unref (end_image);
g_object_unref (start_image);
}
static gboolean
gsk_gpu_node_processor_create_cross_fade_pattern (GskGpuPatternWriter *self,
GskRenderNode *node)
{
GskRenderNode *start_child, *end_child;
start_child = gsk_cross_fade_node_get_start_child (node);
end_child = gsk_cross_fade_node_get_end_child (node);
if (!gsk_gpu_node_processor_create_node_pattern (self, start_child))
return FALSE;
if (!gsk_rect_contains_rect (&start_child->bounds, &node->bounds))
{
gsk_gpu_pattern_writer_append_uint (self, GSK_GPU_PATTERN_CLIP);
gsk_gpu_pattern_writer_append_rect (self, &start_child->bounds, &self->offset);
}
gsk_gpu_pattern_writer_append_uint (self, GSK_GPU_PATTERN_PUSH_COLOR);
if (!gsk_gpu_pattern_writer_push_stack (self))
return FALSE;
if (!gsk_gpu_node_processor_create_node_pattern (self, end_child))
{
gsk_gpu_pattern_writer_pop_stack (self);
return FALSE;
}
if (!gsk_rect_contains_rect (&end_child->bounds, &node->bounds))
{
gsk_gpu_pattern_writer_append_uint (self, GSK_GPU_PATTERN_CLIP);
gsk_gpu_pattern_writer_append_rect (self, &end_child->bounds, &self->offset);
}
gsk_gpu_pattern_writer_append_uint (self, GSK_GPU_PATTERN_POP_CROSS_FADE);
gsk_gpu_pattern_writer_append_float (self, gsk_cross_fade_node_get_progress (node));
gsk_gpu_pattern_writer_pop_stack (self);
return TRUE;
}
static void
gsk_gpu_node_processor_add_mask_node (GskGpuNodeProcessor *self,
GskRenderNode *node)
{
GskRenderNode *source_child, *mask_child;
GskGpuImage *mask_image;
graphene_rect_t bounds, mask_rect;
GskMaskMode mask_mode;
source_child = gsk_mask_node_get_source (node);
mask_child = gsk_mask_node_get_mask (node);
mask_mode = gsk_mask_node_get_mask_mode (node);
if ((gsk_gpu_node_processor_ubershader_instead_of_offscreen (self, mask_child) ||
(gsk_gpu_node_processor_ubershader_instead_of_offscreen (self, source_child) &&
gsk_render_node_get_node_type (source_child) != GSK_COLOR_NODE)) &&
gsk_gpu_node_processor_try_node_as_pattern (self, node))
return;
if (!gsk_gpu_node_processor_clip_node_bounds (self, node, &bounds))
return;
mask_image = gsk_gpu_node_processor_get_node_as_image (self,
0,
GSK_GPU_IMAGE_STRAIGHT_ALPHA,
&bounds,
mask_child,
&mask_rect);
if (mask_image == NULL)
{
if (mask_mode == GSK_MASK_MODE_INVERTED_ALPHA)
gsk_gpu_node_processor_add_node (self, source_child);
return;
}
if (gsk_render_node_get_node_type (source_child) == GSK_COLOR_NODE &&
mask_mode == GSK_MASK_MODE_ALPHA)
{
const GdkRGBA *rgba = gsk_color_node_get_color (source_child);
guint32 descriptor = gsk_gpu_node_processor_add_image (self, mask_image, GSK_GPU_SAMPLER_DEFAULT);
gsk_gpu_colorize_op (self->frame,
gsk_gpu_clip_get_shader_clip (&self->clip, &self->offset, &node->bounds),
self->desc,
descriptor,
&node->bounds,
&self->offset,
&mask_rect,
&GDK_RGBA_INIT_ALPHA (rgba, self->opacity));
}
else
{
GskGpuImage *source_image;
graphene_rect_t source_rect;
guint32 descriptors[2];
source_image = gsk_gpu_node_processor_get_node_as_image (self,
0,
GSK_GPU_IMAGE_STRAIGHT_ALPHA,
&bounds,
source_child,
&source_rect);
if (source_image == NULL)
{
g_object_unref (mask_image);
return;
}
gsk_gpu_node_processor_add_images (self,
2,
(GskGpuImage *[2]) { source_image, mask_image },
(GskGpuSampler[2]) { GSK_GPU_SAMPLER_DEFAULT, GSK_GPU_SAMPLER_DEFAULT },
descriptors);
gsk_gpu_mask_op (self->frame,
gsk_gpu_clip_get_shader_clip (&self->clip, &self->offset, &node->bounds),
self->desc,
&node->bounds,
&self->offset,
self->opacity,
mask_mode,
descriptors[0],
&source_rect,
descriptors[1],
&mask_rect);
g_object_unref (source_image);
}
g_object_unref (mask_image);
}
static gboolean
gsk_gpu_node_processor_create_mask_pattern (GskGpuPatternWriter *self,
GskRenderNode *node)
{
GskRenderNode *source_child, *mask_child;
source_child = gsk_mask_node_get_source (node);
mask_child = gsk_mask_node_get_mask (node);
if (!gsk_gpu_node_processor_create_node_pattern (self, source_child))
return FALSE;
if (!gsk_rect_contains_rect (&source_child->bounds, &node->bounds))
{
gsk_gpu_pattern_writer_append_uint (self, GSK_GPU_PATTERN_CLIP);
gsk_gpu_pattern_writer_append_rect (self, &source_child->bounds, &self->offset);
}
gsk_gpu_pattern_writer_append_uint (self, GSK_GPU_PATTERN_PUSH_COLOR);
if (!gsk_gpu_pattern_writer_push_stack (self))
return FALSE;
if (!gsk_gpu_node_processor_create_node_pattern (self, mask_child))
{
gsk_gpu_pattern_writer_pop_stack (self);
return FALSE;
}
if (!gsk_rect_contains_rect (&mask_child->bounds, &node->bounds))
{
gsk_gpu_pattern_writer_append_uint (self, GSK_GPU_PATTERN_CLIP);
gsk_gpu_pattern_writer_append_rect (self, &mask_child->bounds, &self->offset);
}
switch (gsk_mask_node_get_mask_mode (node))
{
case GSK_MASK_MODE_ALPHA:
gsk_gpu_pattern_writer_append_uint (self, GSK_GPU_PATTERN_POP_MASK_ALPHA);
break;
case GSK_MASK_MODE_INVERTED_ALPHA:
gsk_gpu_pattern_writer_append_uint (self, GSK_GPU_PATTERN_POP_MASK_INVERTED_ALPHA);
break;
case GSK_MASK_MODE_LUMINANCE:
gsk_gpu_pattern_writer_append_uint (self, GSK_GPU_PATTERN_POP_MASK_LUMINANCE);
break;
case GSK_MASK_MODE_INVERTED_LUMINANCE:
gsk_gpu_pattern_writer_append_uint (self, GSK_GPU_PATTERN_POP_MASK_INVERTED_LUMINANCE);
break;
default:
g_return_val_if_reached (FALSE);
}
gsk_gpu_pattern_writer_pop_stack (self);
return TRUE;
}
static void
gsk_gpu_node_processor_add_glyph_node (GskGpuNodeProcessor *self,
GskRenderNode *node)
{
GskGpuDevice *device;
const PangoGlyphInfo *glyphs;
PangoFont *font;
graphene_point_t offset;
guint i, num_glyphs;
float scale, inv_scale;
GdkRGBA color;
float align_scale_x, align_scale_y;
float inv_align_scale_x, inv_align_scale_y;
unsigned int flags_mask;
GskGpuImage *last_image;
guint32 descriptor;
const float inv_pango_scale = 1.f / PANGO_SCALE;
if (self->opacity < 1.0 &&
gsk_text_node_has_color_glyphs (node))
{
gsk_gpu_node_processor_add_without_opacity (self, node);
return;
}
device = gsk_gpu_frame_get_device (self->frame);
color = *gsk_text_node_get_color (node);
color.alpha *= self->opacity;
num_glyphs = gsk_text_node_get_num_glyphs (node);
glyphs = gsk_text_node_get_glyphs (node, NULL);
font = gsk_text_node_get_font (node);
offset = *gsk_text_node_get_offset (node);
offset.x += self->offset.x;
offset.y += self->offset.y;
scale = MAX (graphene_vec2_get_x (&self->scale), graphene_vec2_get_y (&self->scale));
inv_scale = 1.f / scale;
if (gsk_font_get_hint_style (font) != CAIRO_HINT_STYLE_NONE)
{
align_scale_x = scale * 4;
align_scale_y = scale;
flags_mask = 3;
}
else
{
align_scale_x = align_scale_y = scale * 4;
flags_mask = 15;
}
inv_align_scale_x = 1 / align_scale_x;
inv_align_scale_y = 1 / align_scale_y;
last_image = NULL;
descriptor = 0;
for (i = 0; i < num_glyphs; i++)
{
GskGpuImage *image;
graphene_rect_t glyph_bounds, glyph_tex_rect;
graphene_point_t glyph_offset, glyph_origin;
GskGpuGlyphLookupFlags flags;
glyph_origin = GRAPHENE_POINT_INIT (offset.x + glyphs[i].geometry.x_offset * inv_pango_scale,
offset.y + glyphs[i].geometry.y_offset * inv_pango_scale);
glyph_origin.x = floorf (glyph_origin.x * align_scale_x + 0.5f);
glyph_origin.y = floorf (glyph_origin.y * align_scale_y + 0.5f);
flags = (((int) glyph_origin.x & 3) | (((int) glyph_origin.y & 3) << 2)) & flags_mask;
glyph_origin.x *= inv_align_scale_x;
glyph_origin.y *= inv_align_scale_y;
image = gsk_gpu_device_lookup_glyph_image (device,
self->frame,
font,
glyphs[i].glyph,
flags,
scale,
&glyph_bounds,
&glyph_offset);
glyph_tex_rect = GRAPHENE_RECT_INIT (-glyph_bounds.origin.x * inv_scale,
-glyph_bounds.origin.y * inv_scale,
gsk_gpu_image_get_width (image) * inv_scale,
gsk_gpu_image_get_height (image) * inv_scale);
glyph_bounds = GRAPHENE_RECT_INIT (0,
0,
glyph_bounds.size.width * inv_scale,
glyph_bounds.size.height * inv_scale);
glyph_origin = GRAPHENE_POINT_INIT (glyph_origin.x - glyph_offset.x * inv_scale,
glyph_origin.y - glyph_offset.y * inv_scale);
if (image != last_image)
{
descriptor = gsk_gpu_node_processor_add_image (self, image, GSK_GPU_SAMPLER_DEFAULT);
last_image = image;
}
if (glyphs[i].attr.is_color)
gsk_gpu_texture_op (self->frame,
gsk_gpu_clip_get_shader_clip (&self->clip, &glyph_offset, &glyph_bounds),
self->desc,
descriptor,
&glyph_bounds,
&glyph_origin,
&glyph_tex_rect);
else
gsk_gpu_colorize_op (self->frame,
gsk_gpu_clip_get_shader_clip (&self->clip, &glyph_offset, &glyph_bounds),
self->desc,
descriptor,
&glyph_bounds,
&glyph_origin,
&glyph_tex_rect,
&color);
offset.x += glyphs[i].geometry.width * inv_pango_scale;
}
}
static gboolean
gsk_gpu_node_processor_create_glyph_pattern (GskGpuPatternWriter *self,
GskRenderNode *node)
{
GskGpuDevice *device;
const PangoGlyphInfo *glyphs;
PangoFont *font;
guint num_glyphs;
gsize i;
float scale, inv_scale;
guint32 tex_id;
GskGpuImage *last_image;
graphene_point_t offset;
float align_scale_x, align_scale_y;
float inv_align_scale_x, inv_align_scale_y;
unsigned int flags_mask;
const float inv_pango_scale = 1.f / PANGO_SCALE;
if (gsk_text_node_has_color_glyphs (node))
return FALSE;
device = gsk_gpu_frame_get_device (self->frame);
num_glyphs = gsk_text_node_get_num_glyphs (node);
glyphs = gsk_text_node_get_glyphs (node, NULL);
font = gsk_text_node_get_font (node);
offset = *gsk_text_node_get_offset (node);
offset.x += self->offset.x;
offset.y += self->offset.y;
scale = MAX (graphene_vec2_get_x (&self->scale), graphene_vec2_get_y (&self->scale));
inv_scale = 1.f / scale;
gsk_gpu_pattern_writer_append_uint (self, GSK_GPU_PATTERN_GLYPHS);
gsk_gpu_pattern_writer_append_rgba (self, gsk_text_node_get_color (node));
gsk_gpu_pattern_writer_append_uint (self, num_glyphs);
if (gsk_font_get_hint_style (font) != CAIRO_HINT_STYLE_NONE)
{
align_scale_x = scale * 4;
align_scale_y = scale;
flags_mask = 3;
}
else
{
align_scale_x = align_scale_y = scale * 4;
flags_mask = 15;
}
inv_align_scale_x = 1 / align_scale_x;
inv_align_scale_y = 1 / align_scale_y;
last_image = NULL;
for (i = 0; i < num_glyphs; i++)
{
GskGpuImage *image;
graphene_rect_t glyph_bounds;
graphene_point_t glyph_offset, glyph_origin;
GskGpuGlyphLookupFlags flags;
glyph_origin = GRAPHENE_POINT_INIT (offset.x + glyphs[i].geometry.x_offset * inv_pango_scale,
offset.y + glyphs[i].geometry.y_offset * inv_pango_scale);
glyph_origin.x = floorf (glyph_origin.x * align_scale_x + 0.5f);
glyph_origin.y = floorf (glyph_origin.y * align_scale_y + 0.5f);
flags = (((int) glyph_origin.x & 3) | (((int) glyph_origin.y & 3) << 2)) & flags_mask;
glyph_origin.x *= inv_align_scale_x;
glyph_origin.y *= inv_align_scale_y;
image = gsk_gpu_device_lookup_glyph_image (device,
self->frame,
font,
glyphs[i].glyph,
flags,
scale,
&glyph_bounds,
&glyph_offset);
if (image != last_image)
{
if (!gsk_gpu_pattern_writer_add_image (self, image, GSK_GPU_SAMPLER_DEFAULT, &tex_id))
return FALSE;
last_image = image;
}
glyph_origin = GRAPHENE_POINT_INIT (glyph_origin.x - glyph_offset.x * inv_scale,
glyph_origin.y - glyph_offset.y * inv_scale);
gsk_gpu_pattern_writer_append_uint (self, tex_id);
gsk_gpu_pattern_writer_append_rect (self,
&GRAPHENE_RECT_INIT (
0,
0,
glyph_bounds.size.width * inv_scale,
glyph_bounds.size.height * inv_scale
),
&glyph_origin);
gsk_gpu_pattern_writer_append_rect (self,
&GRAPHENE_RECT_INIT (
- glyph_bounds.origin.x * inv_scale,
- glyph_bounds.origin.y * inv_scale,
gsk_gpu_image_get_width (image) * inv_scale,
gsk_gpu_image_get_height (image) * inv_scale
),
&glyph_origin);
offset.x += glyphs[i].geometry.width * inv_pango_scale;
}
return TRUE;
}
static gboolean
gsk_gpu_node_processor_create_opacity_pattern (GskGpuPatternWriter *self,
GskRenderNode *node)
{
if (!gsk_gpu_node_processor_create_node_pattern (self, gsk_opacity_node_get_child (node)))
return FALSE;
gsk_gpu_pattern_writer_append_uint (self, GSK_GPU_PATTERN_OPACITY);
gsk_gpu_pattern_writer_append_float (self, gsk_opacity_node_get_opacity (node));
return TRUE;
}
static void
gsk_gpu_node_processor_add_color_matrix_node (GskGpuNodeProcessor *self,
GskRenderNode *node)
{
GskGpuImage *image;
guint32 descriptor;
GskRenderNode *child;
graphene_matrix_t opacity_matrix;
const graphene_matrix_t *color_matrix;
graphene_rect_t tex_rect;
child = gsk_color_matrix_node_get_child (node);
if (gsk_gpu_node_processor_ubershader_instead_of_offscreen (self, child) &&
gsk_gpu_node_processor_try_node_as_pattern (self, node))
return;
color_matrix = gsk_color_matrix_node_get_color_matrix (node);
if (self->opacity < 1.0f)
{
graphene_matrix_init_from_float (&opacity_matrix,
(float[16]) {
1.0f, 0.0f, 0.0f, 0.0f,
0.0f, 1.0f, 0.0f, 0.0f,
0.0f, 0.0f, 1.0f, 0.0f,
0.0f, 0.0f, 0.0f, self->opacity
});
graphene_matrix_multiply (&opacity_matrix, color_matrix, &opacity_matrix);
color_matrix = &opacity_matrix;
}
image = gsk_gpu_node_processor_get_node_as_image (self,
0,
GSK_GPU_IMAGE_STRAIGHT_ALPHA,
NULL,
child,
&tex_rect);
if (image == NULL)
return;
descriptor = gsk_gpu_node_processor_add_image (self, image, GSK_GPU_SAMPLER_DEFAULT);
gsk_gpu_color_matrix_op (self->frame,
gsk_gpu_clip_get_shader_clip (&self->clip, &self->offset, &node->bounds),
self->desc,
descriptor,
&node->bounds,
&self->offset,
&tex_rect,
color_matrix,
gsk_color_matrix_node_get_color_offset (node));
g_object_unref (image);
}
static gboolean
gsk_gpu_node_processor_create_color_matrix_pattern (GskGpuPatternWriter *self,
GskRenderNode *node)
{
if (!gsk_gpu_node_processor_create_node_pattern (self, gsk_color_matrix_node_get_child (node)))
return FALSE;
gsk_gpu_pattern_writer_append_uint (self, GSK_GPU_PATTERN_COLOR_MATRIX);
gsk_gpu_pattern_writer_append_matrix (self, gsk_color_matrix_node_get_color_matrix (node));
gsk_gpu_pattern_writer_append_vec4 (self, gsk_color_matrix_node_get_color_offset (node));
return TRUE;
}
static void
gsk_gpu_node_processor_repeat_tile (GskGpuNodeProcessor *self,
const graphene_rect_t *rect,
float x,
float y,
GskRenderNode *child,
const graphene_rect_t *child_bounds)
{
GskGpuImage *image;
graphene_rect_t clipped_child_bounds, offset_rect;
guint32 descriptor;
gsk_rect_init_offset (&offset_rect,
rect,
- x * child_bounds->size.width,
- y * child_bounds->size.height);
if (!gsk_rect_intersection (&offset_rect, child_bounds, &clipped_child_bounds))
{
/* The math has gone wrong probably, someone should look at this. */
g_warn_if_reached ();
return;
}
GSK_DEBUG (FALLBACK, "Offscreening node '%s' for tiling", g_type_name_from_instance ((GTypeInstance *) child));
image = gsk_gpu_node_processor_create_offscreen (self->frame,
&self->scale,
&clipped_child_bounds,
child);
g_return_if_fail (image);
descriptor = gsk_gpu_node_processor_add_image (self, image, GSK_GPU_SAMPLER_REPEAT);
gsk_gpu_texture_op (self->frame,
gsk_gpu_clip_get_shader_clip (&self->clip, &self->offset, rect),
self->desc,
descriptor,
rect,
&self->offset,
&GRAPHENE_RECT_INIT (
clipped_child_bounds.origin.x + x * child_bounds->size.width,
clipped_child_bounds.origin.y + y * child_bounds->size.height,
clipped_child_bounds.size.width,
clipped_child_bounds.size.height
));
g_object_unref (image);
}
static void
gsk_gpu_node_processor_add_repeat_node (GskGpuNodeProcessor *self,
GskRenderNode *node)
{
GskRenderNode *child;
const graphene_rect_t *child_bounds;
graphene_rect_t bounds;
float tile_left, tile_right, tile_top, tile_bottom;
child = gsk_repeat_node_get_child (node);
child_bounds = gsk_repeat_node_get_child_bounds (node);
if (gsk_rect_is_empty (child_bounds))
return;
if (gsk_gpu_node_processor_ubershader_instead_of_offscreen (self, child) &&
gsk_gpu_node_processor_repeat_node_can_ubershader (node) &&
gsk_gpu_node_processor_try_node_as_pattern (self, node))
return;
gsk_gpu_node_processor_get_clip_bounds (self, &bounds);
if (!gsk_rect_intersection (&bounds, &node->bounds, &bounds))
return;
tile_left = (bounds.origin.x - child_bounds->origin.x) / child_bounds->size.width;
tile_right = (bounds.origin.x + bounds.size.width - child_bounds->origin.x) / child_bounds->size.width;
tile_top = (bounds.origin.y - child_bounds->origin.y) / child_bounds->size.height;
tile_bottom = (bounds.origin.y + bounds.size.height - child_bounds->origin.y) / child_bounds->size.height;
/* the 1st check tests that a tile fully fits into the bounds,
* the 2nd check is to catch the case where it fits exactly */
if (ceilf (tile_left) < floorf (tile_right) &&
bounds.size.width > child_bounds->size.width)
{
if (ceilf (tile_top) < floorf (tile_bottom) &&
bounds.size.height > child_bounds->size.height)
{
/* tile in both directions */
gsk_gpu_node_processor_repeat_tile (self,
&bounds,
ceilf (tile_left),
ceilf (tile_top),
child,
child_bounds);
}
else
{
/* tile horizontally, repeat vertically */
float y;
for (y = floorf (tile_top); y < ceilf (tile_bottom); y++)
{
float start_y = MAX (bounds.origin.y,
child_bounds->origin.y + y * child_bounds->size.height);
float end_y = MIN (bounds.origin.y + bounds.size.height,
child_bounds->origin.y + (y + 1) * child_bounds->size.height);
gsk_gpu_node_processor_repeat_tile (self,
&GRAPHENE_RECT_INIT (
bounds.origin.x,
start_y,
bounds.size.width,
end_y - start_y
),
ceilf (tile_left),
y,
child,
child_bounds);
}
}
}
else if (ceilf (tile_top) < floorf (tile_bottom) &&
bounds.size.height > child_bounds->size.height)
{
/* repeat horizontally, tile vertically */
float x;
for (x = floorf (tile_left); x < ceilf (tile_right); x++)
{
float start_x = MAX (bounds.origin.x,
child_bounds->origin.x + x * child_bounds->size.width);
float end_x = MIN (bounds.origin.x + bounds.size.width,
child_bounds->origin.x + (x + 1) * child_bounds->size.width);
gsk_gpu_node_processor_repeat_tile (self,
&GRAPHENE_RECT_INIT (
start_x,
bounds.origin.y,
end_x - start_x,
bounds.size.height
),
x,
ceilf (tile_top),
child,
child_bounds);
}
}
else
{
/* repeat in both directions */
graphene_point_t old_offset, offset;
graphene_rect_t clip_bounds;
float x, y;
old_offset = self->offset;
for (x = floorf (tile_left); x < ceilf (tile_right); x++)
{
offset.x = x * child_bounds->size.width;
for (y = floorf (tile_top); y < ceilf (tile_bottom); y++)
{
offset.y = y * child_bounds->size.height;
self->offset = GRAPHENE_POINT_INIT (old_offset.x + offset.x, old_offset.y + offset.y);
clip_bounds = GRAPHENE_RECT_INIT (bounds.origin.x - offset.x,
bounds.origin.y - offset.y,
bounds.size.width,
bounds.size.height);
if (!gsk_rect_intersection (&clip_bounds, child_bounds, &clip_bounds))
continue;
gsk_gpu_node_processor_add_node_clipped (self,
child,
&clip_bounds);
}
}
self->offset = old_offset;
}
}
static gboolean
gsk_gpu_node_processor_create_repeat_pattern (GskGpuPatternWriter *self,
GskRenderNode *node)
{
GskRenderNode *child;
const graphene_rect_t *child_bounds;
graphene_rect_t old_bounds;
child = gsk_repeat_node_get_child (node);
child_bounds = gsk_repeat_node_get_child_bounds (node);
if (gsk_rect_is_empty (child_bounds))
{
gsk_gpu_pattern_writer_append_uint (self, GSK_GPU_PATTERN_COLOR);
gsk_gpu_pattern_writer_append_rgba (self, &GDK_RGBA_TRANSPARENT);
return TRUE;
}
if (!gsk_gpu_node_processor_repeat_node_can_ubershader (node))
return FALSE;
if (!gsk_gpu_pattern_writer_push_stack (self))
return FALSE;
gsk_gpu_pattern_writer_append_uint (self, GSK_GPU_PATTERN_REPEAT_PUSH);
gsk_gpu_pattern_writer_append_rect (self, child_bounds, &self->offset);
old_bounds = self->bounds;
self->bounds = GRAPHENE_RECT_INIT (child_bounds->origin.x + self->offset.x,
child_bounds->origin.y + self->offset.y,
child_bounds->size.width,
child_bounds->size.height);
if (!gsk_gpu_node_processor_create_node_pattern (self, child))
{
gsk_gpu_pattern_writer_pop_stack (self);
return FALSE;
}
self->bounds = old_bounds;
if (!gsk_rect_contains_rect (&child->bounds, child_bounds))
{
gsk_gpu_pattern_writer_append_uint (self, GSK_GPU_PATTERN_CLIP);
gsk_gpu_pattern_writer_append_rect (self, &child->bounds, &self->offset);
}
gsk_gpu_pattern_writer_append_uint (self, GSK_GPU_PATTERN_POSITION_POP);
gsk_gpu_pattern_writer_pop_stack (self);
return TRUE;
}
typedef struct _FillData FillData;
struct _FillData
{
GskPath *path;
GdkRGBA color;
GskFillRule fill_rule;
};
static void
gsk_fill_data_free (gpointer data)
{
FillData *fill = data;
gsk_path_unref (fill->path);
g_free (fill);
}
static void
gsk_gpu_node_processor_fill_path (gpointer data,
cairo_t *cr)
{
FillData *fill = data;
switch (fill->fill_rule)
{
case GSK_FILL_RULE_WINDING:
cairo_set_fill_rule (cr, CAIRO_FILL_RULE_WINDING);
break;
case GSK_FILL_RULE_EVEN_ODD:
cairo_set_fill_rule (cr, CAIRO_FILL_RULE_EVEN_ODD);
break;
default:
g_assert_not_reached ();
break;
}
gsk_path_to_cairo (fill->path, cr);
gdk_cairo_set_source_rgba (cr, &fill->color);
cairo_fill (cr);
}
static void
gsk_gpu_node_processor_add_fill_node (GskGpuNodeProcessor *self,
GskRenderNode *node)
{
graphene_rect_t clip_bounds, source_rect;
GskGpuImage *mask_image, *source_image;
guint32 descriptors[2];
GskRenderNode *child;
if (!gsk_gpu_node_processor_clip_node_bounds (self, node, &clip_bounds))
return;
rect_round_to_pixels (&clip_bounds, &self->scale, &self->offset, &clip_bounds);
child = gsk_fill_node_get_child (node);
mask_image = gsk_gpu_upload_cairo_op (self->frame,
&self->scale,
&clip_bounds,
gsk_gpu_node_processor_fill_path,
g_memdup (&(FillData) {
.path = gsk_path_ref (gsk_fill_node_get_path (node)),
.color = GSK_RENDER_NODE_TYPE (child) == GSK_COLOR_NODE
? *gsk_color_node_get_color (child)
: GDK_RGBA_WHITE,
.fill_rule = gsk_fill_node_get_fill_rule (node)
}, sizeof (FillData)),
(GDestroyNotify) gsk_fill_data_free);
g_return_if_fail (mask_image != NULL);
if (GSK_RENDER_NODE_TYPE (child) == GSK_COLOR_NODE)
{
gsk_gpu_node_processor_image_op (self,
mask_image,
&clip_bounds,
&clip_bounds);
return;
}
source_image = gsk_gpu_node_processor_get_node_as_image (self,
0,
GSK_GPU_IMAGE_STRAIGHT_ALPHA,
&clip_bounds,
child,
&source_rect);
if (source_image == NULL)
return;
gsk_gpu_node_processor_add_images (self,
2,
(GskGpuImage *[2]) { source_image, mask_image },
(GskGpuSampler[2]) { GSK_GPU_SAMPLER_DEFAULT, GSK_GPU_SAMPLER_DEFAULT },
descriptors);
gsk_gpu_mask_op (self->frame,
gsk_gpu_clip_get_shader_clip (&self->clip, &self->offset, &clip_bounds),
self->desc,
&clip_bounds,
&self->offset,
self->opacity,
GSK_MASK_MODE_ALPHA,
descriptors[0],
&source_rect,
descriptors[1],
&clip_bounds);
g_object_unref (source_image);
}
typedef struct _StrokeData StrokeData;
struct _StrokeData
{
GskPath *path;
GdkRGBA color;
GskStroke stroke;
};
static void
gsk_stroke_data_free (gpointer data)
{
StrokeData *stroke = data;
gsk_path_unref (stroke->path);
gsk_stroke_clear (&stroke->stroke);
g_free (stroke);
}
static void
gsk_gpu_node_processor_stroke_path (gpointer data,
cairo_t *cr)
{
StrokeData *stroke = data;
gsk_stroke_to_cairo (&stroke->stroke, cr);
gsk_path_to_cairo (stroke->path, cr);
gdk_cairo_set_source_rgba (cr, &stroke->color);
cairo_stroke (cr);
}
static void
gsk_gpu_node_processor_add_stroke_node (GskGpuNodeProcessor *self,
GskRenderNode *node)
{
graphene_rect_t clip_bounds, source_rect;
GskGpuImage *mask_image, *source_image;
guint32 descriptors[2];
GskRenderNode *child;
if (!gsk_gpu_node_processor_clip_node_bounds (self, node, &clip_bounds))
return;
rect_round_to_pixels (&clip_bounds, &self->scale, &self->offset, &clip_bounds);
child = gsk_stroke_node_get_child (node);
mask_image = gsk_gpu_upload_cairo_op (self->frame,
&self->scale,
&clip_bounds,
gsk_gpu_node_processor_stroke_path,
g_memdup (&(StrokeData) {
.path = gsk_path_ref (gsk_stroke_node_get_path (node)),
.color = GSK_RENDER_NODE_TYPE (child) == GSK_COLOR_NODE
? *gsk_color_node_get_color (child)
: GDK_RGBA_WHITE,
.stroke = GSK_STROKE_INIT_COPY (gsk_stroke_node_get_stroke (node))
}, sizeof (StrokeData)),
(GDestroyNotify) gsk_stroke_data_free);
g_return_if_fail (mask_image != NULL);
if (GSK_RENDER_NODE_TYPE (child) == GSK_COLOR_NODE)
{
gsk_gpu_node_processor_image_op (self,
mask_image,
&clip_bounds,
&clip_bounds);
return;
}
source_image = gsk_gpu_node_processor_get_node_as_image (self,
0,
GSK_GPU_IMAGE_STRAIGHT_ALPHA,
&clip_bounds,
child,
&source_rect);
if (source_image == NULL)
return;
gsk_gpu_node_processor_add_images (self,
2,
(GskGpuImage *[2]) { source_image, mask_image },
(GskGpuSampler[2]) { GSK_GPU_SAMPLER_DEFAULT, GSK_GPU_SAMPLER_DEFAULT },
descriptors);
gsk_gpu_mask_op (self->frame,
gsk_gpu_clip_get_shader_clip (&self->clip, &self->offset, &clip_bounds),
self->desc,
&clip_bounds,
&self->offset,
self->opacity,
GSK_MASK_MODE_ALPHA,
descriptors[0],
&source_rect,
descriptors[1],
&clip_bounds);
g_object_unref (source_image);
}
static void
gsk_gpu_node_processor_add_subsurface_node (GskGpuNodeProcessor *self,
GskRenderNode *node)
{
GdkSubsurface *subsurface;
subsurface = gsk_subsurface_node_get_subsurface (node);
if (subsurface == NULL ||
gdk_subsurface_get_texture (subsurface) == NULL ||
gdk_subsurface_get_parent (subsurface) != gdk_draw_context_get_surface (gsk_gpu_frame_get_context (self->frame)))
{
gsk_gpu_node_processor_add_node (self, gsk_subsurface_node_get_child (node));
return;
}
if (!gdk_subsurface_is_above_parent (subsurface))
{
cairo_rectangle_int_t int_clipped;
graphene_rect_t rect, clipped;
graphene_rect_offset_r (&node->bounds,
self->offset.x, self->offset.y,
&rect);
gsk_rect_intersection (&self->clip.rect.bounds, &rect, &clipped);
if (gsk_gpu_frame_should_optimize (self->frame, GSK_GPU_OPTIMIZE_CLEAR) &&
node->bounds.size.width * node->bounds.size.height > 100 * 100 && /* not worth the effort for small images */
(self->clip.type != GSK_GPU_CLIP_ROUNDED ||
gsk_gpu_clip_contains_rect (&self->clip, &GRAPHENE_POINT_INIT(0,0), &clipped)) &&
gsk_gpu_node_processor_rect_is_integer (self, &clipped, &int_clipped))
{
if (gdk_rectangle_intersect (&int_clipped, &self->scissor, &int_clipped))
{
gsk_gpu_clear_op (self->frame,
&int_clipped,
&GDK_RGBA_TRANSPARENT);
}
}
else
{
self->blend = GSK_GPU_BLEND_CLEAR;
self->pending_globals |= GSK_GPU_GLOBAL_BLEND;
gsk_gpu_node_processor_sync_globals (self, 0);
gsk_gpu_color_op (self->frame,
gsk_gpu_clip_get_shader_clip (&self->clip, &self->offset, &node->bounds),
&node->bounds,
&self->offset,
&GDK_RGBA_WHITE);
self->blend = GSK_GPU_BLEND_OVER;
self->pending_globals |= GSK_GPU_GLOBAL_BLEND;
}
}
}
static gboolean
gsk_gpu_node_processor_create_subsurface_pattern (GskGpuPatternWriter *self,
GskRenderNode *node)
{
/* This can only ever happen if no offloading is happening */
g_assert (gsk_subsurface_node_get_subsurface (node) == NULL ||
gdk_subsurface_get_texture (gsk_subsurface_node_get_subsurface (node)) == NULL);
return gsk_gpu_node_processor_create_node_pattern (self, gsk_subsurface_node_get_child (node));
}
static void
gsk_gpu_node_processor_add_container_node (GskGpuNodeProcessor *self,
GskRenderNode *node)
{
if (self->opacity < 1.0 && !gsk_container_node_is_disjoint (node))
{
gsk_gpu_node_processor_add_without_opacity (self, node);
return;
}
for (guint i = 0; i < gsk_container_node_get_n_children (node); i++)
gsk_gpu_node_processor_add_node (self, gsk_container_node_get_child (node, i));
}
static gboolean
gsk_gpu_node_processor_create_debug_pattern (GskGpuPatternWriter *self,
GskRenderNode *node)
{
return gsk_gpu_node_processor_create_node_pattern (self, gsk_debug_node_get_child (node));
}
static void
gsk_gpu_node_processor_add_debug_node (GskGpuNodeProcessor *self,
GskRenderNode *node)
{
gsk_gpu_node_processor_add_node (self, gsk_debug_node_get_child (node));
}
typedef enum {
GSK_GPU_HANDLE_OPACITY = (1 << 0)
} GskGpuNodeFeatures;
static const struct
{
GskGpuGlobals ignored_globals;
GskGpuNodeFeatures features;
void (* process_node) (GskGpuNodeProcessor *self,
GskRenderNode *node);
gboolean (* create_pattern) (GskGpuPatternWriter *self,
GskRenderNode *node);
} nodes_vtable[] = {
[GSK_NOT_A_RENDER_NODE] = {
0,
0,
NULL,
NULL,
},
[GSK_CONTAINER_NODE] = {
GSK_GPU_GLOBAL_MATRIX | GSK_GPU_GLOBAL_SCALE | GSK_GPU_GLOBAL_CLIP | GSK_GPU_GLOBAL_SCISSOR,
GSK_GPU_HANDLE_OPACITY,
gsk_gpu_node_processor_add_container_node,
NULL,
},
[GSK_CAIRO_NODE] = {
0,
GSK_GPU_HANDLE_OPACITY,
NULL,
NULL,
},
[GSK_COLOR_NODE] = {
0,
GSK_GPU_HANDLE_OPACITY,
gsk_gpu_node_processor_add_color_node,
gsk_gpu_node_processor_create_color_pattern,
},
[GSK_LINEAR_GRADIENT_NODE] = {
0,
GSK_GPU_HANDLE_OPACITY,
gsk_gpu_node_processor_add_linear_gradient_node,
gsk_gpu_node_processor_create_linear_gradient_pattern,
},
[GSK_REPEATING_LINEAR_GRADIENT_NODE] = {
0,
GSK_GPU_HANDLE_OPACITY,
gsk_gpu_node_processor_add_linear_gradient_node,
gsk_gpu_node_processor_create_linear_gradient_pattern,
},
[GSK_RADIAL_GRADIENT_NODE] = {
0,
GSK_GPU_HANDLE_OPACITY,
gsk_gpu_node_processor_add_radial_gradient_node,
gsk_gpu_node_processor_create_radial_gradient_pattern,
},
[GSK_REPEATING_RADIAL_GRADIENT_NODE] = {
0,
GSK_GPU_HANDLE_OPACITY,
gsk_gpu_node_processor_add_radial_gradient_node,
gsk_gpu_node_processor_create_radial_gradient_pattern,
},
[GSK_CONIC_GRADIENT_NODE] = {
0,
GSK_GPU_HANDLE_OPACITY,
gsk_gpu_node_processor_add_conic_gradient_node,
gsk_gpu_node_processor_create_conic_gradient_pattern,
},
[GSK_BORDER_NODE] = {
0,
GSK_GPU_HANDLE_OPACITY,
gsk_gpu_node_processor_add_border_node,
NULL,
},
[GSK_TEXTURE_NODE] = {
0,
GSK_GPU_HANDLE_OPACITY,
gsk_gpu_node_processor_add_texture_node,
gsk_gpu_node_processor_create_texture_pattern,
},
[GSK_INSET_SHADOW_NODE] = {
0,
GSK_GPU_HANDLE_OPACITY,
gsk_gpu_node_processor_add_inset_shadow_node,
NULL,
},
[GSK_OUTSET_SHADOW_NODE] = {
0,
GSK_GPU_HANDLE_OPACITY,
gsk_gpu_node_processor_add_outset_shadow_node,
NULL,
},
[GSK_TRANSFORM_NODE] = {
GSK_GPU_GLOBAL_MATRIX | GSK_GPU_GLOBAL_SCALE | GSK_GPU_GLOBAL_CLIP | GSK_GPU_GLOBAL_SCISSOR | GSK_GPU_GLOBAL_BLEND,
GSK_GPU_HANDLE_OPACITY,
gsk_gpu_node_processor_add_transform_node,
gsk_gpu_node_processor_create_transform_pattern,
},
[GSK_OPACITY_NODE] = {
GSK_GPU_GLOBAL_MATRIX | GSK_GPU_GLOBAL_SCALE | GSK_GPU_GLOBAL_CLIP | GSK_GPU_GLOBAL_SCISSOR,
GSK_GPU_HANDLE_OPACITY,
gsk_gpu_node_processor_add_opacity_node,
gsk_gpu_node_processor_create_opacity_pattern,
},
[GSK_COLOR_MATRIX_NODE] = {
0,
GSK_GPU_HANDLE_OPACITY,
gsk_gpu_node_processor_add_color_matrix_node,
gsk_gpu_node_processor_create_color_matrix_pattern
},
[GSK_REPEAT_NODE] = {
0,
GSK_GPU_HANDLE_OPACITY,
gsk_gpu_node_processor_add_repeat_node,
gsk_gpu_node_processor_create_repeat_pattern
},
[GSK_CLIP_NODE] = {
GSK_GPU_GLOBAL_MATRIX | GSK_GPU_GLOBAL_SCALE | GSK_GPU_GLOBAL_CLIP | GSK_GPU_GLOBAL_SCISSOR | GSK_GPU_GLOBAL_BLEND,
GSK_GPU_HANDLE_OPACITY,
gsk_gpu_node_processor_add_clip_node,
gsk_gpu_node_processor_create_clip_pattern,
},
[GSK_ROUNDED_CLIP_NODE] = {
GSK_GPU_GLOBAL_MATRIX | GSK_GPU_GLOBAL_SCALE | GSK_GPU_GLOBAL_CLIP | GSK_GPU_GLOBAL_SCISSOR | GSK_GPU_GLOBAL_BLEND,
GSK_GPU_HANDLE_OPACITY,
gsk_gpu_node_processor_add_rounded_clip_node,
NULL,
},
[GSK_SHADOW_NODE] = {
0,
0,
gsk_gpu_node_processor_add_shadow_node,
NULL,
},
[GSK_BLEND_NODE] = {
0,
GSK_GPU_HANDLE_OPACITY,
gsk_gpu_node_processor_add_blend_node,
gsk_gpu_node_processor_create_blend_pattern,
},
[GSK_CROSS_FADE_NODE] = {
0,
GSK_GPU_HANDLE_OPACITY,
gsk_gpu_node_processor_add_cross_fade_node,
gsk_gpu_node_processor_create_cross_fade_pattern,
},
[GSK_TEXT_NODE] = {
0,
GSK_GPU_HANDLE_OPACITY,
gsk_gpu_node_processor_add_glyph_node,
gsk_gpu_node_processor_create_glyph_pattern,
},
[GSK_BLUR_NODE] = {
0,
0,
gsk_gpu_node_processor_add_blur_node,
NULL,
},
[GSK_DEBUG_NODE] = {
GSK_GPU_GLOBAL_MATRIX | GSK_GPU_GLOBAL_SCALE | GSK_GPU_GLOBAL_CLIP | GSK_GPU_GLOBAL_SCISSOR | GSK_GPU_GLOBAL_BLEND,
GSK_GPU_HANDLE_OPACITY,
gsk_gpu_node_processor_add_debug_node,
gsk_gpu_node_processor_create_debug_pattern,
},
[GSK_GL_SHADER_NODE] = {
0,
0,
NULL,
NULL,
},
[GSK_TEXTURE_SCALE_NODE] = {
0,
0,
gsk_gpu_node_processor_add_texture_scale_node,
NULL,
},
[GSK_MASK_NODE] = {
0,
GSK_GPU_HANDLE_OPACITY,
gsk_gpu_node_processor_add_mask_node,
gsk_gpu_node_processor_create_mask_pattern,
},
[GSK_FILL_NODE] = {
0,
GSK_GPU_HANDLE_OPACITY,
gsk_gpu_node_processor_add_fill_node,
NULL,
},
[GSK_STROKE_NODE] = {
0,
GSK_GPU_HANDLE_OPACITY,
gsk_gpu_node_processor_add_stroke_node,
NULL,
},
[GSK_SUBSURFACE_NODE] = {
GSK_GPU_GLOBAL_MATRIX | GSK_GPU_GLOBAL_SCALE | GSK_GPU_GLOBAL_CLIP | GSK_GPU_GLOBAL_SCISSOR | GSK_GPU_GLOBAL_BLEND,
GSK_GPU_HANDLE_OPACITY,
gsk_gpu_node_processor_add_subsurface_node,
gsk_gpu_node_processor_create_subsurface_pattern,
},
};
static void
gsk_gpu_node_processor_add_node (GskGpuNodeProcessor *self,
GskRenderNode *node)
{
GskRenderNodeType node_type;
/* This catches the corner cases of empty nodes, so after this check
* there's quaranteed to be at least 1 pixel that needs to be drawn
*/
if (node->bounds.size.width == 0 || node->bounds.size.height == 0)
return;
if (!gsk_gpu_clip_may_intersect_rect (&self->clip, &self->offset, &node->bounds))
return;
node_type = gsk_render_node_get_node_type (node);
if (node_type >= G_N_ELEMENTS (nodes_vtable))
{
g_critical ("unknown node type %u for %s", node_type, g_type_name_from_instance ((GTypeInstance *) node));
gsk_gpu_node_processor_add_fallback_node (self, node);
return;
}
if (self->opacity < 1.0 && (nodes_vtable[node_type].features & GSK_GPU_HANDLE_OPACITY) == 0)
{
gsk_gpu_node_processor_add_without_opacity (self, node);
return;
}
gsk_gpu_node_processor_sync_globals (self, nodes_vtable[node_type].ignored_globals);
g_assert ((self->pending_globals & ~nodes_vtable[node_type].ignored_globals) == 0);
if (nodes_vtable[node_type].process_node)
{
nodes_vtable[node_type].process_node (self, node);
}
else
{
GSK_DEBUG (FALLBACK, "Unsupported node '%s'",
g_type_name_from_instance ((GTypeInstance *) node));
gsk_gpu_node_processor_add_fallback_node (self, node);
}
}
static gboolean
gsk_gpu_node_processor_create_node_pattern (GskGpuPatternWriter *self,
GskRenderNode *node)
{
GskRenderNodeType node_type;
graphene_rect_t bounds;
GskGpuImage *image;
guint32 tex_id;
if (!gsk_gpu_frame_should_optimize (self->frame, GSK_GPU_OPTIMIZE_UBER))
return FALSE;
/* This catches the corner cases of empty nodes, so after this check
* there's quaranteed to be at least 1 pixel that needs to be drawn
*/
if (node->bounds.size.width == 0 || node->bounds.size.height == 0)
return TRUE;
node_type = gsk_render_node_get_node_type (node);
if (node_type >= G_N_ELEMENTS (nodes_vtable))
{
g_critical ("unknown node type %u for %s", node_type, g_type_name_from_instance ((GTypeInstance *) node));
return FALSE;
}
if (nodes_vtable[node_type].create_pattern != NULL)
{
gsize size_before = pattern_buffer_get_size (&self->buffer);
gsize images_before = self->desc ? gsk_gpu_descriptors_get_n_images (self->desc) : 0;
gsize buffers_before = self->desc ? gsk_gpu_descriptors_get_n_buffers (self->desc) : 0;
if (nodes_vtable[node_type].create_pattern (self, node))
return TRUE;
pattern_buffer_set_size (&self->buffer, size_before);
if (self->desc)
gsk_gpu_descriptors_set_size (self->desc, images_before, buffers_before);
}
rect_round_to_pixels (&GRAPHENE_RECT_INIT (
self->bounds.origin.x - self->offset.x,
self->bounds.origin.y - self->offset.y,
self->bounds.size.width,
self->bounds.size.height
),
&self->scale,
&self->offset,
&bounds);
image = gsk_gpu_get_node_as_image (self->frame,
&bounds,
&self->scale,
node,
&bounds);
if (image == NULL)
{
gsk_gpu_pattern_writer_append_uint (self, GSK_GPU_PATTERN_COLOR);
gsk_gpu_pattern_writer_append_rgba (self, &GDK_RGBA_TRANSPARENT);
return TRUE;
}
if (!gsk_gpu_pattern_writer_add_image (self, image, GSK_GPU_SAMPLER_DEFAULT, &tex_id))
{
g_object_unref (image);
return FALSE;
}
if (gsk_gpu_image_get_flags (image) & GSK_GPU_IMAGE_STRAIGHT_ALPHA)
gsk_gpu_pattern_writer_append_uint (self, GSK_GPU_PATTERN_STRAIGHT_ALPHA);
else
gsk_gpu_pattern_writer_append_uint (self, GSK_GPU_PATTERN_TEXTURE);
gsk_gpu_pattern_writer_append_uint (self, tex_id);
gsk_gpu_pattern_writer_append_rect (self, &bounds, &self->offset);
g_object_unref (image);
return TRUE;
}
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