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gtk/gsk/gl/gskglrenderer.c
Timm Bäder afa991752c gl renderer: Look at shadow color in the outset shadow cache 
It would probably be better to not do this and always render the outline
in plain white, then later recolor it but do this for no, just for
correctness.
2020-01-18 08:49:51 +01:00

3646 lines
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#include "config.h"
#include "gskglrenderer.h"
#include "gskdebugprivate.h"
#include "gskenums.h"
#include "gskgldriverprivate.h"
#include "gskglprofilerprivate.h"
#include "gskprofilerprivate.h"
#include "gskrendererprivate.h"
#include "gskrendernodeprivate.h"
#include "gsktransformprivate.h"
#include "gskglshaderbuilderprivate.h"
#include "gskglglyphcacheprivate.h"
#include "gskgliconcacheprivate.h"
#include "gskglrenderopsprivate.h"
#include "gskcairoblurprivate.h"
#include "gskglshadowcacheprivate.h"
#include "gskglnodesampleprivate.h"
#include "gsktransform.h"
#include "gskprivate.h"
#include "gdk/gdkgltextureprivate.h"
#include "gdk/gdkglcontextprivate.h"
#include "gdk/gdkprofilerprivate.h"
#include "gdk/gdkrgbaprivate.h"
#include <epoxy/gl.h>
#define SHADER_VERSION_GLES 100
#define SHADER_VERSION_GL2_LEGACY 110
#define SHADER_VERSION_GL3_LEGACY 130
#define SHADER_VERSION_GL3 150
#define ORTHO_NEAR_PLANE -10000
#define ORTHO_FAR_PLANE 10000
#define DEBUG_OPS 0
#define SHADOW_EXTRA_SIZE 4
#if DEBUG_OPS
#define OP_PRINT(format, ...) g_print(format, ## __VA_ARGS__)
#else
#define OP_PRINT(format, ...)
#endif
#define INIT_PROGRAM_UNIFORM_LOCATION(program_name, uniform_basename) \
G_STMT_START{\
self->program_name ## _program.program_name.uniform_basename ## _location = \
glGetUniformLocation(self->program_name ## _program.id, "u_" #uniform_basename);\
g_assert_cmpint (self->program_name ## _program.program_name.uniform_basename ## _location, >, -1); \
}G_STMT_END
#define INIT_COMMON_UNIFORM_LOCATION(program_ptr, uniform_basename) \
G_STMT_START{\
program_ptr->uniform_basename ## _location = \
glGetUniformLocation(program_ptr->id, "u_" #uniform_basename);\
}G_STMT_END
typedef enum
{
FORCE_OFFSCREEN = 1 << 0,
RESET_CLIP = 1 << 1,
RESET_OPACITY = 1 << 2,
DUMP_FRAMEBUFFER = 1 << 3,
CENTER_CHILD = 1 << 4,
NO_CACHE_PLZ = 1 << 5,
} OffscreenFlags;
typedef struct
{
int texture_id;
float x;
float y;
float x2;
float y2;
} TextureRegion;
static inline void
init_full_texture_region (TextureRegion *r,
int texture_id)
{
r->texture_id = texture_id;
r->x = 0;
r->y = 0;
r->x2 = 1;
r->y2 = 1;
}
static void G_GNUC_UNUSED
print_render_node_tree (GskRenderNode *root, int level)
{
#define INDENT 4
const guint type = gsk_render_node_get_node_type (root);
guint i;
switch (type)
{
case GSK_CONTAINER_NODE:
g_print ("%*s Container\n", level * INDENT, " ");
for (i = 0; i < gsk_container_node_get_n_children (root); i++)
print_render_node_tree (gsk_container_node_get_child (root, i), level + 1);
break;
case GSK_TRANSFORM_NODE:
g_print ("%*s Transform\n", level * INDENT, " ");
print_render_node_tree (gsk_transform_node_get_child (root), level + 1);
break;
case GSK_COLOR_MATRIX_NODE:
g_print ("%*s Color Matrix\n", level * INDENT, " ");
print_render_node_tree (gsk_color_matrix_node_get_child (root), level + 1);
break;
case GSK_CROSS_FADE_NODE:
g_print ("%*s Crossfade(%.2f)\n", level * INDENT, " ",
gsk_cross_fade_node_get_progress (root));
print_render_node_tree (gsk_cross_fade_node_get_start_child (root), level + 1);
print_render_node_tree (gsk_cross_fade_node_get_end_child (root), level + 1);
break;
case GSK_TEXT_NODE:
g_print ("%*s Text\n", level * INDENT, " ");
break;
case GSK_COLOR_NODE:
g_print ("%*s Color %s\n", level * INDENT, " ", gdk_rgba_to_string (gsk_color_node_peek_color (root)));
break;
case GSK_SHADOW_NODE:
g_print ("%*s Shadow\n", level * INDENT, " ");
print_render_node_tree (gsk_shadow_node_get_child (root), level + 1);
break;
case GSK_TEXTURE_NODE:
g_print ("%*s Texture %p\n", level * INDENT, " ", gsk_texture_node_get_texture (root));
break;
case GSK_DEBUG_NODE:
g_print ("%*s Debug: %s\n", level * INDENT, " ", gsk_debug_node_get_message (root));
print_render_node_tree (gsk_debug_node_get_child (root), level + 1);
break;
case GSK_CLIP_NODE:
g_print ("%*s Clip (%f, %f, %f, %f):\n", level * INDENT, " ",
root->bounds.origin.x, root->bounds.origin.y, root->bounds.size.width, root->bounds.size.height);
print_render_node_tree (gsk_clip_node_get_child (root), level + 1);
break;
default:
g_print ("%*s %s\n", level * INDENT, " ", root->node_class->type_name);
}
#undef INDENT
}
static void G_GNUC_UNUSED
dump_framebuffer (const char *filename, int w, int h)
{
int stride = cairo_format_stride_for_width (CAIRO_FORMAT_ARGB32, w);
guchar *data = g_malloc (h * stride);
cairo_surface_t *s;
glReadPixels (0, 0, w, h, GL_BGRA, GL_UNSIGNED_BYTE, data);
s = cairo_image_surface_create_for_data (data, CAIRO_FORMAT_ARGB32, w, h, stride);
cairo_surface_write_to_png (s, filename);
cairo_surface_destroy (s);
g_free (data);
}
static void G_GNUC_UNUSED
dump_node (GskRenderNode *node,
const char *filename)
{
const int surface_width = ceilf (node->bounds.size.width);
const int surface_height = ceilf (node->bounds.size.height);
cairo_surface_t *surface;
cairo_t *cr;
surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
surface_width,
surface_height);
cr = cairo_create (surface);
cairo_save (cr);
cairo_translate (cr, -node->bounds.origin.x, -node->bounds.origin.y);
gsk_render_node_draw (node, cr);
cairo_restore (cr);
cairo_destroy (cr);
cairo_surface_write_to_png (surface, filename);
cairo_surface_destroy (surface);
}
static inline gboolean
node_is_invisible (const GskRenderNode *node)
{
return node->bounds.size.width == 0.0f ||
node->bounds.size.height == 0.0f ||
isnan (node->bounds.size.width) ||
isnan (node->bounds.size.height);
}
static inline void
sort_border_sides (const GdkRGBA *colors,
int *indices)
{
gboolean done[4] = {0, 0, 0, 0};
int i, k;
int cur = 0;
for (i = 0; i < 3; i ++)
{
if (done[i])
continue;
indices[cur] = i;
done[i] = TRUE;
cur ++;
for (k = i + 1; k < 4; k ++)
{
if (gdk_rgba_equal (&colors[k], &colors[i]))
{
indices[cur] = k;
done[k] = TRUE;
cur ++;
}
}
if (cur >= 4)
break;
}
}
static inline gboolean
color_matrix_modifies_alpha (GskRenderNode *node)
{
const graphene_matrix_t *matrix = gsk_color_matrix_node_peek_color_matrix (node);
const graphene_vec4_t *offset = gsk_color_matrix_node_peek_color_offset (node);
graphene_vec4_t row3;
if (graphene_vec4_get_w (offset) != 0.0f)
return TRUE;
graphene_matrix_get_row (matrix, 3, &row3);
return !graphene_vec4_equal (graphene_vec4_w_axis (), &row3);
}
static inline void
gsk_rounded_rect_shrink_to_minimum (GskRoundedRect *self)
{
self->bounds.size.width = ceilf (MAX (MAX (self->corner[0].width, self->corner[1].width),
MAX (self->corner[2].width, self->corner[3].width)) * 2);
self->bounds.size.height = ceilf (MAX (MAX (self->corner[0].height, self->corner[1].height),
MAX (self->corner[2].height, self->corner[3].height)) * 2);
}
static inline gboolean
node_supports_transform (GskRenderNode *node)
{
/* Some nodes can't handle non-trivial transforms without being
* rendered to a texture (e.g. rotated clips, etc.). Some however
* work just fine, mostly because they already draw their child
* to a texture and just render the texture manipulated in some
* way, think opacity or color matrix. */
const guint node_type = gsk_render_node_get_node_type (node);
switch (node_type)
{
case GSK_COLOR_NODE:
case GSK_OPACITY_NODE:
case GSK_COLOR_MATRIX_NODE:
case GSK_TEXTURE_NODE:
case GSK_TRANSFORM_NODE:
case GSK_CROSS_FADE_NODE:
case GSK_LINEAR_GRADIENT_NODE:
case GSK_DEBUG_NODE:
case GSK_TEXT_NODE:
return TRUE;
default:
return FALSE;
}
return FALSE;
}
static inline void
load_vertex_data_with_region (GskQuadVertex vertex_data[GL_N_VERTICES],
GskRenderNode *node,
RenderOpBuilder *builder,
const TextureRegion *r,
gboolean flip_y)
{
const float min_x = builder->dx + node->bounds.origin.x;
const float min_y = builder->dy + node->bounds.origin.y;
const float max_x = min_x + node->bounds.size.width;
const float max_y = min_y + node->bounds.size.height;
const float y1 = flip_y ? r->y2 : r->y;
const float y2 = flip_y ? r->y : r->y2;
vertex_data[0].position[0] = min_x;
vertex_data[0].position[1] = min_y;
vertex_data[0].uv[0] = r->x;
vertex_data[0].uv[1] = y1;
vertex_data[1].position[0] = min_x;
vertex_data[1].position[1] = max_y;
vertex_data[1].uv[0] = r->x;
vertex_data[1].uv[1] = y2;
vertex_data[2].position[0] = max_x;
vertex_data[2].position[1] = min_y;
vertex_data[2].uv[0] = r->x2;
vertex_data[2].uv[1] = y1;
vertex_data[3].position[0] = max_x;
vertex_data[3].position[1] = max_y;
vertex_data[3].uv[0] = r->x2;
vertex_data[3].uv[1] = y2;
vertex_data[4].position[0] = min_x;
vertex_data[4].position[1] = max_y;
vertex_data[4].uv[0] = r->x;
vertex_data[4].uv[1] = y2;
vertex_data[5].position[0] = max_x;
vertex_data[5].position[1] = min_y;
vertex_data[5].uv[0] = r->x2;
vertex_data[5].uv[1] = y1;
}
static void
load_vertex_data (GskQuadVertex vertex_data[GL_N_VERTICES],
GskRenderNode *node,
RenderOpBuilder *builder)
{
const float min_x = builder->dx + node->bounds.origin.x;
const float min_y = builder->dy + node->bounds.origin.y;
const float max_x = min_x + node->bounds.size.width;
const float max_y = min_y + node->bounds.size.height;
vertex_data[0].position[0] = min_x;
vertex_data[0].position[1] = min_y;
vertex_data[0].uv[0] = 0;
vertex_data[0].uv[1] = 0;
vertex_data[1].position[0] = min_x;
vertex_data[1].position[1] = max_y;
vertex_data[1].uv[0] = 0;
vertex_data[1].uv[1] = 1;
vertex_data[2].position[0] = max_x;
vertex_data[2].position[1] = min_y;
vertex_data[2].uv[0] = 1;
vertex_data[2].uv[1] = 0;
vertex_data[3].position[0] = max_x;
vertex_data[3].position[1] = max_y;
vertex_data[3].uv[0] = 1;
vertex_data[3].uv[1] = 1;
vertex_data[4].position[0] = min_x;
vertex_data[4].position[1] = max_y;
vertex_data[4].uv[0] = 0;
vertex_data[4].uv[1] = 1;
vertex_data[5].position[0] = max_x;
vertex_data[5].position[1] = min_y;
vertex_data[5].uv[0] = 1;
vertex_data[5].uv[1] = 0;
}
static void
load_offscreen_vertex_data (GskQuadVertex vertex_data[GL_N_VERTICES],
GskRenderNode *node,
RenderOpBuilder *builder)
{
const float min_x = builder->dx + node->bounds.origin.x;
const float min_y = builder->dy + node->bounds.origin.y;
const float max_x = min_x + node->bounds.size.width;
const float max_y = min_y + node->bounds.size.height;
vertex_data[0].position[0] = min_x;
vertex_data[0].position[1] = min_y;
vertex_data[0].uv[0] = 0;
vertex_data[0].uv[1] = 1;
vertex_data[1].position[0] = min_x;
vertex_data[1].position[1] = max_y;
vertex_data[1].uv[0] = 0;
vertex_data[1].uv[1] = 0;
vertex_data[2].position[0] = max_x;
vertex_data[2].position[1] = min_y;
vertex_data[2].uv[0] = 1;
vertex_data[2].uv[1] = 1;
vertex_data[3].position[0] = max_x;
vertex_data[3].position[1] = max_y;
vertex_data[3].uv[0] = 1;
vertex_data[3].uv[1] = 0;
vertex_data[4].position[0] = min_x;
vertex_data[4].position[1] = max_y;
vertex_data[4].uv[0] = 0;
vertex_data[4].uv[1] = 0;
vertex_data[5].position[0] = max_x;
vertex_data[5].position[1] = min_y;
vertex_data[5].uv[0] = 1;
vertex_data[5].uv[1] = 1;
}
static void gsk_gl_renderer_setup_render_mode (GskGLRenderer *self);
static gboolean add_offscreen_ops (GskGLRenderer *self,
RenderOpBuilder *builder,
const graphene_rect_t *bounds,
GskRenderNode *child_node,
TextureRegion *region_out,
gboolean *is_offscreen,
guint flags) G_GNUC_WARN_UNUSED_RESULT;
static void gsk_gl_renderer_add_render_ops (GskGLRenderer *self,
GskRenderNode *node,
RenderOpBuilder *builder);
struct _GskGLRenderer
{
GskRenderer parent_instance;
int scale_factor;
GdkGLContext *gl_context;
GskGLDriver *gl_driver;
GskGLProfiler *gl_profiler;
union {
Program programs[GL_N_PROGRAMS];
struct {
Program blend_program;
Program blit_program;
Program blur_program;
Program border_program;
Program color_matrix_program;
Program color_program;
Program coloring_program;
Program cross_fade_program;
Program inset_shadow_program;
Program linear_gradient_program;
Program outset_shadow_program;
Program repeat_program;
Program unblurred_outset_shadow_program;
};
};
RenderOpBuilder op_builder;
GskGLTextureAtlases *atlases;
GskGLGlyphCache *glyph_cache;
GskGLIconCache *icon_cache;
GskGLShadowCache shadow_cache;
#ifdef G_ENABLE_DEBUG
struct {
GQuark frames;
} profile_counters;
struct {
GQuark cpu_time;
GQuark gpu_time;
} profile_timers;
#endif
cairo_region_t *render_region;
};
struct _GskGLRendererClass
{
GskRendererClass parent_class;
};
G_DEFINE_TYPE (GskGLRenderer, gsk_gl_renderer, GSK_TYPE_RENDERER)
static void G_GNUC_UNUSED
add_rect_ops (RenderOpBuilder *builder,
const graphene_rect_t *r)
{
const float min_x = r->origin.x;
const float min_y = r->origin.y;
const float max_x = min_x + r->size.width;
const float max_y = min_y + r->size.height;
ops_draw (builder, (GskQuadVertex[GL_N_VERTICES]) {
{ { min_x, min_y }, { 0, 1 }, },
{ { min_x, max_y }, { 0, 0 }, },
{ { max_x, min_y }, { 1, 1 }, },
{ { max_x, max_y }, { 1, 0 }, },
{ { min_x, max_y }, { 0, 0 }, },
{ { max_x, min_y }, { 1, 1 }, },
});
}
static GdkRGBA BLACK = {0, 0, 0, 1};
static void G_GNUC_UNUSED
add_rect_outline_ops (GskGLRenderer *self,
RenderOpBuilder *builder,
const graphene_rect_t *rect)
{
ops_set_program (builder, &self->color_program);
ops_set_color (builder, &BLACK);
add_rect_ops (builder,
&GRAPHENE_RECT_INIT (rect->origin.x, rect->origin.y,
1, rect->size.height));
add_rect_ops (builder,
&GRAPHENE_RECT_INIT (rect->origin.x, rect->origin.y,
rect->size.width, 1));
add_rect_ops (builder,
&GRAPHENE_RECT_INIT (rect->origin.x + rect->size.width - 1, rect->origin.y,
1, rect->size.height));
add_rect_ops (builder,
&GRAPHENE_RECT_INIT (rect->origin.x, rect->origin.y + rect->size.height - 1,
rect->size.width, 1));
}
static inline GskRoundedRect
transform_rect (GskGLRenderer *self,
RenderOpBuilder *builder,
const GskRoundedRect *rect)
{
const float scale = ops_get_scale (builder);
GskRoundedRect r;
int i;
ops_transform_bounds_modelview (builder, &rect->bounds, &r.bounds);
for (i = 0; i < 4; i ++)
{
r.corner[i].width = rect->corner[i].width * scale;
r.corner[i].height = rect->corner[i].height * scale;
}
return r;
}
static inline void
render_fallback_node (GskGLRenderer *self,
GskRenderNode *node,
RenderOpBuilder *builder)
{
const float scale = ops_get_scale (builder);
const int surface_width = ceilf (node->bounds.size.width) * scale;
const int surface_height = ceilf (node->bounds.size.height) * scale;
cairo_surface_t *surface;
cairo_surface_t *rendered_surface;
cairo_t *cr;
int cached_id;
int texture_id;
if (surface_width <= 0 ||
surface_height <= 0)
return;
cached_id = gsk_gl_driver_get_texture_for_pointer (self->gl_driver, node);
if (cached_id != 0)
{
ops_set_program (builder, &self->blit_program);
ops_set_texture (builder, cached_id);
load_offscreen_vertex_data (ops_draw (builder, NULL), node, builder);
return;
}
/* We first draw the recording surface on an image surface,
* just because the scaleY(-1) later otherwise screws up the
* rendering... */
{
rendered_surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
surface_width,
surface_height);
cairo_surface_set_device_scale (rendered_surface, scale, scale);
cr = cairo_create (rendered_surface);
cairo_save (cr);
cairo_translate (cr, -node->bounds.origin.x, -node->bounds.origin.y);
gsk_render_node_draw (node, cr);
cairo_restore (cr);
cairo_destroy (cr);
}
surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
surface_width,
surface_height);
cairo_surface_set_device_scale (surface, scale, scale);
cr = cairo_create (surface);
/* We draw upside down here, so it matches what GL does. */
cairo_save (cr);
cairo_scale (cr, 1, -1);
cairo_translate (cr, 0, -surface_height / scale);
cairo_set_source_surface (cr, rendered_surface, 0, 0);
cairo_rectangle (cr, 0, 0, surface_width / scale, surface_height / scale);
cairo_fill (cr);
cairo_restore (cr);
#if G_ENABLE_DEBUG
if (GSK_RENDERER_DEBUG_CHECK (GSK_RENDERER (self), FALLBACK))
{
cairo_move_to (cr, 0, 0);
cairo_rectangle (cr, 0, 0, node->bounds.size.width, node->bounds.size.height);
if (gsk_render_node_get_node_type (node) == GSK_CAIRO_NODE)
cairo_set_source_rgba (cr, 0.3, 0, 1, 0.25);
else
cairo_set_source_rgba (cr, 1, 0, 0, 0.25);
cairo_fill_preserve (cr);
if (gsk_render_node_get_node_type (node) == GSK_CAIRO_NODE)
cairo_set_source_rgba (cr, 0.3, 0, 1, 1);
else
cairo_set_source_rgba (cr, 1, 0, 0, 1);
cairo_stroke (cr);
}
#endif
cairo_destroy (cr);
/* Upload the Cairo surface to a GL texture */
texture_id = gsk_gl_driver_create_texture (self->gl_driver,
surface_width,
surface_height);
gsk_gl_driver_bind_source_texture (self->gl_driver, texture_id);
gsk_gl_driver_init_texture_with_surface (self->gl_driver,
texture_id,
surface,
GL_NEAREST, GL_NEAREST);
gdk_gl_context_label_object_printf (self->gl_context, GL_TEXTURE, texture_id,
"Fallback %s %d", node->node_class->type_name, texture_id);
cairo_surface_destroy (surface);
cairo_surface_destroy (rendered_surface);
gsk_gl_driver_set_texture_for_pointer (self->gl_driver, node, texture_id);
ops_set_program (builder, &self->blit_program);
ops_set_texture (builder, texture_id);
load_offscreen_vertex_data (ops_draw (builder, NULL), node, builder);
}
static inline void
render_text_node (GskGLRenderer *self,
GskRenderNode *node,
RenderOpBuilder *builder,
const GdkRGBA *color,
gboolean force_color)
{
const PangoFont *font = gsk_text_node_peek_font (node);
const PangoGlyphInfo *glyphs = gsk_text_node_peek_glyphs (node);
const float text_scale = ops_get_scale (builder);
const graphene_point_t *offset = gsk_text_node_get_offset (node);
const guint num_glyphs = gsk_text_node_get_num_glyphs (node);
const float x = offset->x + builder->dx;
const float y = offset->y + builder->dy;
int i;
int x_position = 0;
GlyphCacheKey lookup;
/* If the font has color glyphs, we don't need to recolor anything */
if (!force_color && gsk_text_node_has_color_glyphs (node))
{
ops_set_program (builder, &self->blit_program);
}
else
{
ops_set_program (builder, &self->coloring_program);
ops_set_color (builder, color);
}
memset (&lookup, 0, sizeof (CacheKeyData));
lookup.data.font = (PangoFont *)font;
lookup.data.scale = (guint) (text_scale * 1024);
/* We use one quad per character, unlike the other nodes which
* use at most one quad altogether */
for (i = 0; i < num_glyphs; i++)
{
const PangoGlyphInfo *gi = &glyphs[i];
const GskGLCachedGlyph *glyph;
float glyph_x, glyph_y, glyph_x2, glyph_y2;
float tx, ty, tx2, ty2;
float cx;
float cy;
if (gi->glyph == PANGO_GLYPH_EMPTY)
continue;
cx = (float)(x_position + gi->geometry.x_offset) / PANGO_SCALE;
cy = (float)(gi->geometry.y_offset) / PANGO_SCALE;
glyph_cache_key_set_glyph_and_shift (&lookup, gi->glyph, x + cx, y + cy);
gsk_gl_glyph_cache_lookup_or_add (self->glyph_cache,
&lookup,
self->gl_driver,
&glyph);
if (glyph->texture_id == 0)
goto next;
ops_set_texture (builder, glyph->texture_id);
tx = glyph->tx;
ty = glyph->ty;
tx2 = tx + glyph->tw;
ty2 = ty + glyph->th;
glyph_x = floor (x + cx + 0.125) + glyph->draw_x;
glyph_y = floor (y + cy + 0.125) + glyph->draw_y;
glyph_x2 = glyph_x + glyph->draw_width;
glyph_y2 = glyph_y + glyph->draw_height;
ops_draw (builder, (GskQuadVertex[GL_N_VERTICES]) {
{ { glyph_x, glyph_y }, { tx, ty }, },
{ { glyph_x, glyph_y2 }, { tx, ty2 }, },
{ { glyph_x2, glyph_y }, { tx2, ty }, },
{ { glyph_x2, glyph_y2 }, { tx2, ty2 }, },
{ { glyph_x, glyph_y2 }, { tx, ty2 }, },
{ { glyph_x2, glyph_y }, { tx2, ty }, },
});
next:
x_position += gi->geometry.width;
}
}
static inline void
render_border_node (GskGLRenderer *self,
GskRenderNode *node,
RenderOpBuilder *builder)
{
const float scale = ops_get_scale (builder);
const float min_x = builder->dx + node->bounds.origin.x;
const float min_y = builder->dy + node->bounds.origin.y;
const float max_x = min_x + node->bounds.size.width;
const float max_y = min_y + node->bounds.size.height;
const GdkRGBA *colors = gsk_border_node_peek_colors (node);
const GskRoundedRect *rounded_outline = gsk_border_node_peek_outline (node);
const float *og_widths = gsk_border_node_peek_widths (node);
GskRoundedRect outline;
float widths[4];
int i;
struct {
float w;
float h;
} sizes[4];
for (i = 0; i < 4; i ++)
widths[i] = og_widths[i];
/* Top left */
if (widths[3] > 0)
sizes[0].w = MAX (widths[3], rounded_outline->corner[0].width);
else
sizes[0].w = 0;
if (widths[0] > 0)
sizes[0].h = MAX (widths[0], rounded_outline->corner[0].height);
else
sizes[0].h = 0;
/* Top right */
if (widths[1] > 0)
sizes[1].w = MAX (widths[1], rounded_outline->corner[1].width);
else
sizes[1].w = 0;
if (widths[0] > 0)
sizes[1].h = MAX (widths[0], rounded_outline->corner[1].height);
else
sizes[1].h = 0;
/* Bottom right */
if (widths[1] > 0)
sizes[2].w = MAX (widths[1], rounded_outline->corner[2].width);
else
sizes[2].w = 0;
if (widths[2] > 0)
sizes[2].h = MAX (widths[2], rounded_outline->corner[2].height);
else
sizes[2].h = 0;
/* Bottom left */
if (widths[3] > 0)
sizes[3].w = MAX (widths[3], rounded_outline->corner[3].width);
else
sizes[3].w = 0;
if (widths[2] > 0)
sizes[3].h = MAX (widths[2], rounded_outline->corner[3].height);
else
sizes[3].h = 0;
for (i = 0; i < 4; i ++)
widths[i] *= scale;
{
const GskQuadVertex side_data[4][6] = {
/* Top */
{
{ { min_x, min_y }, { 0, 1 }, }, /* Upper left */
{ { min_x + sizes[0].w, min_y + sizes[0].h }, { 0, 0 }, }, /* Lower left */
{ { max_x, min_y }, { 1, 1 }, }, /* Upper right */
{ { max_x - sizes[1].w, min_y + sizes[1].h }, { 1, 0 }, }, /* Lower right */
{ { min_x + sizes[0].w, min_y + sizes[0].h }, { 0, 0 }, }, /* Lower left */
{ { max_x, min_y }, { 1, 1 }, }, /* Upper right */
},
/* Right */
{
{ { max_x - sizes[1].w, min_y + sizes[1].h }, { 0, 1 }, }, /* Upper left */
{ { max_x - sizes[2].w, max_y - sizes[2].h }, { 0, 0 }, }, /* Lower left */
{ { max_x, min_y }, { 1, 1 }, }, /* Upper right */
{ { max_x, max_y }, { 1, 0 }, }, /* Lower right */
{ { max_x - sizes[2].w, max_y - sizes[2].h }, { 0, 0 }, }, /* Lower left */
{ { max_x, min_y }, { 1, 1 }, }, /* Upper right */
},
/* Bottom */
{
{ { min_x + sizes[3].w, max_y - sizes[3].h }, { 0, 1 }, }, /* Upper left */
{ { min_x, max_y }, { 0, 0 }, }, /* Lower left */
{ { max_x - sizes[2].w, max_y - sizes[2].h }, { 1, 1 }, }, /* Upper right */
{ { max_x, max_y }, { 1, 0 }, }, /* Lower right */
{ { min_x , max_y }, { 0, 0 }, }, /* Lower left */
{ { max_x - sizes[2].w, max_y - sizes[2].h }, { 1, 1 }, }, /* Upper right */
},
/* Left */
{
{ { min_x, min_y }, { 0, 1 }, }, /* Upper left */
{ { min_x, max_y }, { 0, 0 }, }, /* Lower left */
{ { min_x + sizes[0].w, min_y + sizes[0].h }, { 1, 1 }, }, /* Upper right */
{ { min_x + sizes[3].w, max_y - sizes[3].h }, { 1, 0 }, }, /* Lower right */
{ { min_x, max_y }, { 0, 0 }, }, /* Lower left */
{ { min_x + sizes[0].w, min_y + sizes[0].h }, { 1, 1 }, }, /* Upper right */
}
};
int indices[4] = { 0, 1, 2, 3 };
/* We sort them by color */
sort_border_sides (colors, indices);
/* Prepare outline */
outline = transform_rect (self, builder, rounded_outline);
ops_set_program (builder, &self->border_program);
ops_set_border_width (builder, widths);
ops_set_border (builder, &outline);
for (i = 0; i < 4; i ++)
{
if (widths[indices[i]] > 0)
{
ops_set_border_color (builder, &colors[indices[i]]);
ops_draw (builder, side_data[indices[i]]);
}
}
}
}
static inline void
render_color_node (GskGLRenderer *self,
GskRenderNode *node,
RenderOpBuilder *builder)
{
ops_set_program (builder, &self->color_program);
ops_set_color (builder, gsk_color_node_peek_color (node));
load_vertex_data (ops_draw (builder, NULL), node, builder);
}
static inline void
upload_texture (GskGLRenderer *self,
GdkTexture *texture,
TextureRegion *out_region)
{
if (texture->width <= 128 &&
texture->height <= 128 &&
!GDK_IS_GL_TEXTURE (texture))
{
const IconData *icon_data;
gsk_gl_icon_cache_lookup_or_add (self->icon_cache,
texture,
&icon_data);
out_region->texture_id = icon_data->texture_id;
out_region->x = icon_data->x;
out_region->y = icon_data->y;
out_region->x2 = icon_data->x2;
out_region->y2 = icon_data->y2;
}
else
{
out_region->texture_id =
gsk_gl_driver_get_texture_for_texture (self->gl_driver,
texture,
GL_LINEAR,
GL_LINEAR);
out_region->x = 0;
out_region->y = 0;
out_region->x2 = 1;
out_region->y2 = 1;
}
}
static inline void
render_texture_node (GskGLRenderer *self,
GskRenderNode *node,
RenderOpBuilder *builder)
{
GdkTexture *texture = gsk_texture_node_get_texture (node);
const int max_texture_size = gsk_gl_driver_get_max_texture_size (self->gl_driver);
if (texture->width > max_texture_size || texture->height > max_texture_size)
{
const float min_x = builder->dx + node->bounds.origin.x;
const float min_y = builder->dy + node->bounds.origin.y;
const float max_x = min_x + node->bounds.size.width;
const float max_y = min_y + node->bounds.size.height;
const float scale_x = (max_x - min_x) / texture->width;
const float scale_y = (max_y - min_y) / texture->height;
TextureSlice *slices;
guint n_slices;
guint i;
gsk_gl_driver_slice_texture (self->gl_driver, texture, &slices, &n_slices);
ops_set_program (builder, &self->blit_program);
for (i = 0; i < n_slices; i ++)
{
const TextureSlice *slice = &slices[i];
float x1, x2, y1, y2;
x1 = min_x + (scale_x * slice->rect.x);
x2 = x1 + (slice->rect.width * scale_x);
y1 = min_y + (scale_y * slice->rect.y);
y2 = y1 + (slice->rect.height * scale_y);
ops_set_texture (builder, slice->texture_id);
ops_draw (builder, (GskQuadVertex[GL_N_VERTICES]) {
{ { x1, y1 }, { 0, 0 }, },
{ { x1, y2 }, { 0, 1 }, },
{ { x2, y1 }, { 1, 0 }, },
{ { x2, y2 }, { 1, 1 }, },
{ { x1, y2 }, { 0, 1 }, },
{ { x2, y1 }, { 1, 0 }, },
});
}
}
else
{
TextureRegion r;
upload_texture (self, texture, &r);
ops_set_program (builder, &self->blit_program);
ops_set_texture (builder, r.texture_id);
load_vertex_data_with_region (ops_draw (builder, NULL),
node, builder,
&r,
FALSE);
}
}
static inline void
render_transform_node (GskGLRenderer *self,
GskRenderNode *node,
RenderOpBuilder *builder)
{
GskTransform *node_transform = gsk_transform_node_get_transform (node);
const GskTransformCategory category = gsk_transform_get_category (node_transform);
GskRenderNode *child = gsk_transform_node_get_child (node);
switch (category)
{
case GSK_TRANSFORM_CATEGORY_IDENTITY:
gsk_gl_renderer_add_render_ops (self, child, builder);
break;
case GSK_TRANSFORM_CATEGORY_2D_TRANSLATE:
{
float dx, dy;
gsk_transform_to_translate (node_transform, &dx, &dy);
ops_offset (builder, dx, dy);
gsk_gl_renderer_add_render_ops (self, child, builder);
ops_offset (builder, -dx, -dy);
}
break;
case GSK_TRANSFORM_CATEGORY_2D_AFFINE:
{
ops_push_modelview (builder, node_transform);
gsk_gl_renderer_add_render_ops (self, child, builder);
ops_pop_modelview (builder);
}
break;
case GSK_TRANSFORM_CATEGORY_UNKNOWN:
case GSK_TRANSFORM_CATEGORY_ANY:
case GSK_TRANSFORM_CATEGORY_3D:
case GSK_TRANSFORM_CATEGORY_2D:
default:
{
TextureRegion region;
gboolean is_offscreen;
if (node_supports_transform (child))
{
ops_push_modelview (builder, node_transform);
gsk_gl_renderer_add_render_ops (self, child, builder);
ops_pop_modelview (builder);
}
else if (add_offscreen_ops (self, builder,
&child->bounds,
child,
&region, &is_offscreen,
RESET_CLIP | RESET_OPACITY))
{
/* For non-trivial transforms, we draw everything on a texture and then
* draw the texture transformed. */
/* TODO: We should compute a modelview containing only the "non-trivial"
* part (e.g. the rotation) and use that. We want to keep the scale
* for the texture.
*/
ops_push_modelview (builder, node_transform);
ops_set_texture (builder, region.texture_id);
ops_set_program (builder, &self->blit_program);
load_vertex_data_with_region (ops_draw (builder, NULL),
child, builder,
&region,
is_offscreen);
ops_pop_modelview (builder);
}
}
}
}
static inline void
render_opacity_node (GskGLRenderer *self,
GskRenderNode *node,
RenderOpBuilder *builder)
{
GskRenderNode *child = gsk_opacity_node_get_child (node);
const float opacity = gsk_opacity_node_get_opacity (node);
float prev_opacity;
if (gsk_render_node_get_node_type (child) == GSK_CONTAINER_NODE)
{
gboolean is_offscreen;
TextureRegion region;
/* The semantics of an opacity node mandate that when, e.g., two color nodes overlap,
* there may not be any blending between them */
if (!add_offscreen_ops (self, builder, &child->bounds,
child,
&region, &is_offscreen,
FORCE_OFFSCREEN | RESET_OPACITY | RESET_CLIP))
return;
prev_opacity = ops_set_opacity (builder,
builder->current_opacity * opacity);
ops_set_program (builder, &self->blit_program);
ops_set_texture (builder, region.texture_id);
load_vertex_data_with_region (ops_draw (builder, NULL),
node, builder,
&region,
is_offscreen);
}
else
{
prev_opacity = ops_set_opacity (builder,
builder->current_opacity * opacity);
gsk_gl_renderer_add_render_ops (self, child, builder);
}
ops_set_opacity (builder, prev_opacity);
}
static inline void
render_linear_gradient_node (GskGLRenderer *self,
GskRenderNode *node,
RenderOpBuilder *builder)
{
const int n_color_stops = MIN (8, gsk_linear_gradient_node_get_n_color_stops (node));
const GskColorStop *stops = gsk_linear_gradient_node_peek_color_stops (node);
const graphene_point_t *start = gsk_linear_gradient_node_peek_start (node);
const graphene_point_t *end = gsk_linear_gradient_node_peek_end (node);
OpLinearGradient *op;
ops_set_program (builder, &self->linear_gradient_program);
op = ops_begin (builder, OP_CHANGE_LINEAR_GRADIENT);
op->color_stops = stops;
op->n_color_stops = n_color_stops;
op->start_point.x = start->x + builder->dx;
op->start_point.y = start->y + builder->dy;
op->end_point.x = end->x + builder->dx;
op->end_point.y = end->y + builder->dy;
load_vertex_data (ops_draw (builder, NULL), node, builder);
}
static inline void
render_clipped_child (GskGLRenderer *self,
RenderOpBuilder *builder,
const graphene_rect_t *clip,
GskRenderNode *child)
{
graphene_rect_t transformed_clip;
graphene_rect_t intersection;
GskRoundedRect child_clip;
ops_transform_bounds_modelview (builder, clip, &transformed_clip);
graphene_rect_intersection (&transformed_clip,
&builder->current_clip->bounds,
&intersection);
gsk_rounded_rect_init_from_rect (&child_clip, &intersection, 0.0f);
ops_push_clip (builder, &child_clip);
gsk_gl_renderer_add_render_ops (self, child, builder);
ops_pop_clip (builder);
}
static inline void
render_clip_node (GskGLRenderer *self,
GskRenderNode *node,
RenderOpBuilder *builder)
{
const graphene_rect_t *clip = gsk_clip_node_peek_clip (node);
GskRenderNode *child = gsk_clip_node_get_child (node);
render_clipped_child (self, builder, clip, child);
}
static inline void
render_rounded_clip_node (GskGLRenderer *self,
GskRenderNode *node,
RenderOpBuilder *builder)
{
const float scale = ops_get_scale (builder);
GskRoundedRect child_clip = *gsk_rounded_clip_node_peek_clip (node);
GskRoundedRect transformed_clip;
GskRenderNode *child = gsk_rounded_clip_node_get_child (node);
gboolean need_offscreen;
int i;
if (node_is_invisible (child))
return;
transformed_clip = child_clip;
ops_transform_bounds_modelview (builder, &child_clip.bounds, &transformed_clip.bounds);
if (!ops_has_clip (builder))
need_offscreen = FALSE;
else if (graphene_rect_contains_rect (&builder->current_clip->bounds,
&transformed_clip.bounds))
need_offscreen = FALSE;
else
need_offscreen = TRUE;
if (!need_offscreen)
{
/* If they don't intersect at all, we can simply set
* the new clip and add the render ops */
for (i = 0; i < 4; i ++)
{
transformed_clip.corner[i].width *= scale;
transformed_clip.corner[i].height *= scale;
}
ops_push_clip (builder, &transformed_clip);
gsk_gl_renderer_add_render_ops (self, child, builder);
ops_pop_clip (builder);
}
else
{
graphene_matrix_t scale_matrix;
gboolean is_offscreen;
TextureRegion region;
/* NOTE: We are *not* transforming the clip by the current modelview here.
* We instead draw the untransformed clip to a texture and then transform
* that texture.
*
* We do, however, apply the scale factor to the child clip of course.
*/
graphene_matrix_init_scale (&scale_matrix, scale, scale, 1.0f);
graphene_matrix_transform_bounds (&scale_matrix, &child_clip.bounds, &child_clip.bounds);
/* Increase corner radius size by scale factor */
for (i = 0; i < 4; i ++)
{
child_clip.corner[i].width *= scale;
child_clip.corner[i].height *= scale;
}
ops_push_clip (builder, &child_clip);
if (!add_offscreen_ops (self, builder, &node->bounds,
child,
&region, &is_offscreen,
FORCE_OFFSCREEN | RESET_OPACITY))
g_assert_not_reached ();
ops_pop_clip (builder);
ops_set_program (builder, &self->blit_program);
ops_set_texture (builder, region.texture_id);
load_offscreen_vertex_data (ops_draw (builder, NULL), node, builder);
}
/* Else this node is entirely out of the current clip node and we don't draw it anyway. */
}
static inline void
render_color_matrix_node (GskGLRenderer *self,
GskRenderNode *node,
RenderOpBuilder *builder)
{
GskRenderNode *child = gsk_color_matrix_node_get_child (node);
TextureRegion region;
gboolean is_offscreen;
if (node_is_invisible (child))
return;
if (!add_offscreen_ops (self, builder,
&node->bounds,
child,
&region, &is_offscreen,
RESET_CLIP | RESET_OPACITY))
g_assert_not_reached ();
ops_set_program (builder, &self->color_matrix_program);
ops_set_color_matrix (builder,
gsk_color_matrix_node_peek_color_matrix (node),
gsk_color_matrix_node_peek_color_offset (node));
ops_set_texture (builder, region.texture_id);
load_vertex_data_with_region (ops_draw (builder, NULL),
node, builder,
&region,
is_offscreen);
}
static inline int
blur_texture (GskGLRenderer *self,
RenderOpBuilder *builder,
const TextureRegion *region,
const int texture_to_blur_width,
const int texture_to_blur_height,
float blur_radius)
{
int pass1_texture_id, pass1_render_target;
int pass2_texture_id, pass2_render_target;
int prev_render_target;
graphene_matrix_t prev_projection;
graphene_rect_t prev_viewport;
graphene_matrix_t item_proj;
OpBlur *op;
g_assert (blur_radius > 0);
gsk_gl_driver_create_render_target (self->gl_driver,
texture_to_blur_width, texture_to_blur_height,
&pass1_texture_id, &pass1_render_target);
gsk_gl_driver_create_render_target (self->gl_driver,
texture_to_blur_width, texture_to_blur_height,
&pass2_texture_id, &pass2_render_target);
graphene_matrix_init_ortho (&item_proj,
0, texture_to_blur_width, 0, texture_to_blur_height,
ORTHO_NEAR_PLANE, ORTHO_FAR_PLANE);
graphene_matrix_scale (&item_proj, 1, -1, 1);
prev_projection = ops_set_projection (builder, &item_proj);
ops_set_modelview (builder, NULL);
prev_viewport = ops_set_viewport (builder, &GRAPHENE_RECT_INIT (0, 0, texture_to_blur_width, texture_to_blur_height));
ops_push_clip (builder, &GSK_ROUNDED_RECT_INIT (0, 0, texture_to_blur_width, texture_to_blur_height));
prev_render_target = ops_set_render_target (builder, pass1_render_target);
ops_begin (builder, OP_CLEAR);
ops_set_program (builder, &self->blur_program);
op = ops_begin (builder, OP_CHANGE_BLUR);
op->size.width = texture_to_blur_width;
op->size.height = texture_to_blur_height;
op->radius = blur_radius;
op->dir[0] = 1;
op->dir[1] = 0;
ops_set_texture (builder, region->texture_id);
ops_draw (builder, (GskQuadVertex[GL_N_VERTICES]) {
{ { 0, }, { region->x, region->y2 }, },
{ { 0, texture_to_blur_height }, { region->x, region->y }, },
{ { texture_to_blur_width, }, { region->x2, region->y2 }, },
{ { texture_to_blur_width, texture_to_blur_height }, { region->x2, region->y }, },
{ { 0, texture_to_blur_height }, { region->x, region->y }, },
{ { texture_to_blur_width, }, { region->x2, region->y2 }, },
});
#if 0
{
static int k;
ops_dump_framebuffer (builder,
g_strdup_printf ("pass1_%d.png", k++),
texture_to_blur_width,
texture_to_blur_height);
}
#endif
op = ops_begin (builder, OP_CHANGE_BLUR);
op->size.width = texture_to_blur_width;
op->size.height = texture_to_blur_height;
op->radius = blur_radius;
op->dir[0] = 0;
op->dir[1] = 1;
ops_set_texture (builder, pass1_texture_id);
ops_set_render_target (builder, pass2_render_target);
ops_begin (builder, OP_CLEAR);
ops_draw (builder, (GskQuadVertex[GL_N_VERTICES]) { /* render pass 2 */
{ { 0, }, { 0, 1 }, },
{ { 0, texture_to_blur_height }, { 0, 0 }, },
{ { texture_to_blur_width, }, { 1, 1 }, },
{ { texture_to_blur_width, texture_to_blur_height }, { 1, 0 }, },
{ { 0, texture_to_blur_height }, { 0, 0 }, },
{ { texture_to_blur_width, }, { 1, 1 }, },
});
#if 0
{
static int k;
ops_dump_framebuffer (builder,
g_strdup_printf ("blurred%d.png", k++),
texture_to_blur_width,
texture_to_blur_height);
}
#endif
ops_set_render_target (builder, prev_render_target);
ops_set_viewport (builder, &prev_viewport);
ops_set_projection (builder, &prev_projection);
ops_pop_modelview (builder);
ops_pop_clip (builder);
return pass2_texture_id;
}
static inline void
blur_node (GskGLRenderer *self,
GskRenderNode *node,
RenderOpBuilder *builder,
float blur_radius,
guint extra_flags,
TextureRegion *out_region,
float *out_vertex_data[4]) /* min, max, min, max */
{
const float scale = ops_get_scale (builder);
const float blur_extra = blur_radius * 3.0 / 2.0;
float texture_width, texture_height;
gboolean is_offscreen;
TextureRegion region;
int blurred_texture_id;
g_assert (blur_radius > 0);
/* Increase texture size for the given blur radius and scale it */
texture_width = ceilf ((node->bounds.size.width + blur_extra * 2));
texture_height = ceilf ((node->bounds.size.height + blur_extra * 2));
if (!add_offscreen_ops (self, builder,
&GRAPHENE_RECT_INIT (node->bounds.origin.x - blur_extra,
node->bounds.origin.y - blur_extra,
texture_width, texture_height),
node,
&region, &is_offscreen,
RESET_CLIP | RESET_OPACITY | FORCE_OFFSCREEN | extra_flags))
g_assert_not_reached ();
blurred_texture_id = blur_texture (self, builder,
&region,
texture_width * scale, texture_height * scale,
blur_radius * scale);
init_full_texture_region (out_region, blurred_texture_id);
if (out_vertex_data)
{
*out_vertex_data[0] = builder->dx + node->bounds.origin.x - blur_extra;
*out_vertex_data[1] = builder->dx + node->bounds.origin.x + node->bounds.size.width + blur_extra;
*out_vertex_data[2] = builder->dy + node->bounds.origin.y - blur_extra;
*out_vertex_data[3] = builder->dy + node->bounds.origin.y + node->bounds.size.height + blur_extra;
}
}
static inline void
render_blur_node (GskGLRenderer *self,
GskRenderNode *node,
RenderOpBuilder *builder)
{
const float blur_radius = gsk_blur_node_get_radius (node);
GskRenderNode *child = gsk_blur_node_get_child (node);
TextureRegion blurred_region;
if (blur_radius <= 0)
{
gsk_gl_renderer_add_render_ops (self, child, builder);
return;
}
blurred_region.texture_id = gsk_gl_driver_get_texture_for_pointer (self->gl_driver, node);
if (blurred_region.texture_id == 0)
blur_node (self, child, builder, blur_radius, 0, &blurred_region, NULL);
g_assert (blurred_region.texture_id != 0);
/* Draw the result */
ops_set_program (builder, &self->blit_program);
ops_set_texture (builder, blurred_region.texture_id);
load_offscreen_vertex_data (ops_draw (builder, NULL), node, builder); /* Render result to screen */
/* Add to cache for the blur node */
gsk_gl_driver_set_texture_for_pointer (self->gl_driver, node, blurred_region.texture_id);
}
static inline void
render_unblurred_inset_shadow_node (GskGLRenderer *self,
GskRenderNode *node,
RenderOpBuilder *builder)
{
const float scale = ops_get_scale (builder);
const float blur_radius = gsk_inset_shadow_node_get_blur_radius (node);
const float dx = gsk_inset_shadow_node_get_dx (node);
const float dy = gsk_inset_shadow_node_get_dy (node);
const float spread = gsk_inset_shadow_node_get_spread (node);
OpShadow *op;
g_assert (blur_radius == 0);
ops_set_program (builder, &self->inset_shadow_program);
op = ops_begin (builder, OP_CHANGE_INSET_SHADOW);
op->color = gsk_inset_shadow_node_peek_color (node);
op->outline = transform_rect (self, builder, gsk_inset_shadow_node_peek_outline (node));
op->spread = spread * scale;
op->offset[0] = dx * scale;
op->offset[1] = dy * scale;
load_vertex_data (ops_draw (builder, NULL), node, builder);
}
static inline void
render_inset_shadow_node (GskGLRenderer *self,
GskRenderNode *node,
RenderOpBuilder *builder)
{
const float scale = ops_get_scale (builder);
const float blur_radius = gsk_inset_shadow_node_get_blur_radius (node);
const float blur_extra = blur_radius * 3;
const float dx = gsk_inset_shadow_node_get_dx (node);
const float dy = gsk_inset_shadow_node_get_dy (node);
const GskRoundedRect *node_outline = gsk_inset_shadow_node_peek_outline (node);
float texture_width;
float texture_height;
OpShadow *op;
int blurred_texture_id;
g_assert (blur_radius > 0);
texture_width = ceilf ((node_outline->bounds.size.width + blur_extra) * scale);
texture_height = ceilf ((node_outline->bounds.size.height + blur_extra) * scale);
blurred_texture_id = gsk_gl_driver_get_texture_for_pointer (self->gl_driver, node);
if (blurred_texture_id == 0)
{
const float spread = gsk_inset_shadow_node_get_spread (node) + (blur_extra / 2.0);
GskRoundedRect outline_to_blur;
int render_target, texture_id;
int prev_render_target;
graphene_matrix_t prev_projection;
graphene_rect_t prev_viewport;
graphene_matrix_t item_proj;
int i;
/* TODO: In the following code, we have to be careful about where we apply the scale.
* We're manually scaling stuff (e.g. the outline) so we can later use texture_width
* and texture_height (which are already scaled) as the geometry and keep the modelview
* at a scale of 1. That's kinda complicated though... */
/* Outline of what we actually want to blur later.
* Spread grows inside, so we don't need to account for that. But the blur will need
* to read outside of the inset shadow, so we need to draw some color in there. */
outline_to_blur = *node_outline;
gsk_rounded_rect_shrink (&outline_to_blur,
- blur_extra / 2.0, - blur_extra / 2.0,
- blur_extra / 2.0, - blur_extra / 2.0);
/* Fit to our texture */
outline_to_blur.bounds.origin.x = 0;
outline_to_blur.bounds.origin.y = 0;
outline_to_blur.bounds.size.width *= scale;
outline_to_blur.bounds.size.height *= scale;
for (i = 0; i < 4; i ++)
{
outline_to_blur.corner[i].width *= scale;
outline_to_blur.corner[i].height *= scale;
}
gsk_gl_driver_create_render_target (self->gl_driver,
texture_width, texture_height,
&texture_id, &render_target);
graphene_matrix_init_ortho (&item_proj,
0, texture_width, 0, texture_height,
ORTHO_NEAR_PLANE, ORTHO_FAR_PLANE);
graphene_matrix_scale (&item_proj, 1, -1, 1);
prev_projection = ops_set_projection (builder, &item_proj);
ops_set_modelview (builder, NULL);
prev_viewport = ops_set_viewport (builder, &GRAPHENE_RECT_INIT (0, 0, texture_width, texture_height));
ops_push_clip (builder, &GSK_ROUNDED_RECT_INIT (0, 0, texture_width, texture_height));
prev_render_target = ops_set_render_target (builder, render_target);
ops_begin (builder, OP_CLEAR);
/* Actual inset shadow outline drawing */
ops_set_program (builder, &self->inset_shadow_program);
op = ops_begin (builder, OP_CHANGE_INSET_SHADOW);
op->color = gsk_inset_shadow_node_peek_color (node);
op->outline = transform_rect (self, builder, &outline_to_blur);
op->spread = spread * scale;
op->offset[0] = dx * scale;
op->offset[1] = dy * scale;
ops_draw (builder, (GskQuadVertex[GL_N_VERTICES]) {
{ { 0, 0 }, { 0, 1 }, },
{ { 0, texture_height }, { 0, 0 }, },
{ { texture_width, 0 }, { 1, 1 }, },
{ { texture_width, texture_height }, { 1, 0 }, },
{ { 0, texture_height }, { 0, 0 }, },
{ { texture_width, 0 }, { 1, 1 }, },
});
ops_set_render_target (builder, prev_render_target);
ops_set_viewport (builder, &prev_viewport);
ops_set_projection (builder, &prev_projection);
ops_pop_modelview (builder);
ops_pop_clip (builder);
blurred_texture_id = blur_texture (self, builder,
&(TextureRegion) { texture_id, 0, 0, 1, 1 },
texture_width,
texture_height,
blur_radius * scale);
}
g_assert (blurred_texture_id != 0);
/* Blur the rendered unblurred inset shadow */
/* Use a clip to cut away the unwanted parts outside of the original outline */
{
const gboolean needs_clip = !gsk_rounded_rect_is_rectilinear (node_outline);
const float tx1 = blur_extra / 2.0 * scale / texture_width;
const float tx2 = 1.0 - tx1;
const float ty1 = blur_extra / 2.0 * scale / texture_height;
const float ty2 = 1.0 - ty1;
gsk_gl_driver_set_texture_for_pointer (self->gl_driver, node, blurred_texture_id);
if (needs_clip)
{
const GskRoundedRect node_clip = transform_rect (self, builder, node_outline);
ops_push_clip (builder, &node_clip);
}
ops_set_program (builder, &self->blit_program);
ops_set_texture (builder, blurred_texture_id);
load_vertex_data_with_region (ops_draw (builder, NULL),
node, builder,
&(TextureRegion) { 0, tx1, ty1, tx2, ty2 },
TRUE);
if (needs_clip)
ops_pop_clip (builder);
}
}
static inline void
render_unblurred_outset_shadow_node (GskGLRenderer *self,
GskRenderNode *node,
RenderOpBuilder *builder)
{
const float scale = ops_get_scale (builder);
const GskRoundedRect *outline = gsk_outset_shadow_node_peek_outline (node);
const float spread = gsk_outset_shadow_node_get_spread (node);
const float dx = gsk_outset_shadow_node_get_dx (node);
const float dy = gsk_outset_shadow_node_get_dy (node);
OpShadow *op;
ops_set_program (builder, &self->unblurred_outset_shadow_program);
op = ops_begin (builder, OP_CHANGE_UNBLURRED_OUTSET_SHADOW);
op->color = gsk_outset_shadow_node_peek_color (node);
op->outline = transform_rect (self, builder, outline);
op->spread = spread * scale;
op->offset[0] = dx * scale;
op->offset[1] = dy * scale;
load_vertex_data (ops_draw (builder, NULL), node, builder);
}
static inline void
render_outset_shadow_node (GskGLRenderer *self,
GskRenderNode *node,
RenderOpBuilder *builder)
{
const float scale = ops_get_scale (builder);
const GskRoundedRect *outline = gsk_outset_shadow_node_peek_outline (node);
const GdkRGBA *color = gsk_outset_shadow_node_peek_color (node);
const float blur_radius = gsk_outset_shadow_node_get_blur_radius (node);
const float blur_extra = blur_radius * 3; /* 3 Because we use that in the shader as well */
const float spread = gsk_outset_shadow_node_get_spread (node);
const float dx = gsk_outset_shadow_node_get_dx (node);
const float dy = gsk_outset_shadow_node_get_dy (node);
GskRoundedRect scaled_outline;
GskRoundedRect unscaled_outline;
float texture_width, texture_height;
OpShadow *shadow;
int blurred_texture_id;
int cached_tid;
/* scaled_outline is the minimal outline we need to draw the given drop shadow,
* enlarged by the spread and offset by the blur radius. */
scaled_outline = *outline;
/* Shrink our outline to the minimum size that can still hold all the border radii */
gsk_rounded_rect_shrink_to_minimum (&scaled_outline);
/* Increase by the spread */
gsk_rounded_rect_shrink (&scaled_outline, -spread, -spread, -spread, -spread);
/* For the center part, we add a few pixels */
scaled_outline.bounds.size.width += SHADOW_EXTRA_SIZE;
scaled_outline.bounds.size.height += SHADOW_EXTRA_SIZE;
texture_width = ceil ((scaled_outline.bounds.size.width + (blur_extra)) * scale);
texture_height = ceil ((scaled_outline.bounds.size.height + (blur_extra)) * scale);
/* Preserve this for usage later */
unscaled_outline = scaled_outline;
scaled_outline.bounds.origin.x = blur_extra / 2.0 * scale;
scaled_outline.bounds.origin.y = blur_extra / 2.0 * scale;
scaled_outline.bounds.size.width = texture_width - (blur_extra * scale);
scaled_outline.bounds.size.height = texture_height - (blur_extra * scale);
for (int i = 0; i < 4; i ++)
{
scaled_outline.corner[i].width *= scale;
scaled_outline.corner[i].height *= scale;
}
cached_tid = gsk_gl_shadow_cache_get_texture_id (&self->shadow_cache,
self->gl_driver,
&scaled_outline,
color,
blur_radius);
if (cached_tid == 0)
{
int texture_id, render_target;
int prev_render_target;
graphene_matrix_t prev_projection;
graphene_rect_t prev_viewport;
graphene_matrix_t item_proj;
gsk_gl_driver_create_render_target (self->gl_driver, texture_width, texture_height,
&texture_id, &render_target);
gdk_gl_context_label_object_printf (self->gl_context, GL_TEXTURE, texture_id,
"Outset Shadow Temp %d", texture_id);
gdk_gl_context_label_object_printf (self->gl_context, GL_FRAMEBUFFER, render_target,
"Outset Shadow FB Temp %d", render_target);
graphene_matrix_init_ortho (&item_proj,
0, texture_width, 0, texture_height,
ORTHO_NEAR_PLANE, ORTHO_FAR_PLANE);
graphene_matrix_scale (&item_proj, 1, -1, 1);
prev_render_target = ops_set_render_target (builder, render_target);
ops_begin (builder, OP_CLEAR);
prev_projection = ops_set_projection (builder, &item_proj);
ops_set_modelview (builder, NULL);
prev_viewport = ops_set_viewport (builder, &GRAPHENE_RECT_INIT (0, 0, texture_width, texture_height));
/* Draw outline */
ops_set_program (builder, &self->color_program);
ops_push_clip (builder, &scaled_outline);
ops_set_color (builder, color);
ops_draw (builder, (GskQuadVertex[GL_N_VERTICES]) {
{ { 0, }, { 0, 1 }, },
{ { 0, texture_height }, { 0, 0 }, },
{ { texture_width, }, { 1, 1 }, },
{ { texture_width, texture_height }, { 1, 0 }, },
{ { 0, texture_height }, { 0, 0 }, },
{ { texture_width, }, { 1, 1 }, },
});
ops_pop_clip (builder);
ops_set_viewport (builder, &prev_viewport);
ops_pop_modelview (builder);
ops_set_projection (builder, &prev_projection);
ops_set_render_target (builder, prev_render_target);
/* Now blur the outline */
blurred_texture_id = blur_texture (self, builder,
&(TextureRegion) { texture_id, 0, 0, 1, 1 },
texture_width,
texture_height,
blur_radius * scale);
gsk_gl_driver_mark_texture_permanent (self->gl_driver, blurred_texture_id);
gsk_gl_shadow_cache_commit (&self->shadow_cache,
&scaled_outline,
color,
blur_radius,
blurred_texture_id);
}
else
{
blurred_texture_id = cached_tid;
}
ops_set_program (builder, &self->outset_shadow_program);
ops_set_texture (builder, blurred_texture_id);
shadow = ops_begin (builder, OP_CHANGE_OUTSET_SHADOW);
shadow->outline = transform_rect (self, builder, outline);
{
const float min_x = builder->dx + outline->bounds.origin.x - spread - (blur_extra / 2.0) + dx;
const float min_y = builder->dy + outline->bounds.origin.y - spread - (blur_extra / 2.0) + dy;
const float max_x = min_x + outline->bounds.size.width + (spread + (blur_extra / 2.0)) * 2;
const float max_y = min_y + outline->bounds.size.height + (spread + (blur_extra / 2.0)) * 2;
const float left_width = MAX (MAX (unscaled_outline.corner[GSK_CORNER_TOP_LEFT].width,
unscaled_outline.corner[GSK_CORNER_BOTTOM_LEFT].width),
blur_extra / 2.0);
const float top_height = MAX (MAX (unscaled_outline.corner[GSK_CORNER_TOP_LEFT].height,
unscaled_outline.corner[GSK_CORNER_TOP_RIGHT].height),
blur_extra / 2.0);
const float right_width = MAX (MAX (unscaled_outline.corner[GSK_CORNER_TOP_RIGHT].width,
unscaled_outline.corner[GSK_CORNER_BOTTOM_RIGHT].width),
blur_extra / 2.0);
const float bottom_height = MAX (MAX (unscaled_outline.corner[GSK_CORNER_BOTTOM_LEFT].height,
unscaled_outline.corner[GSK_CORNER_BOTTOM_RIGHT].height),
blur_extra / 2.0);
const float center_width = (max_x - min_x) - left_width - right_width;
const float center_height = (max_y - min_y) - top_height - bottom_height;
float x1, x2, y1, y2, tx1, tx2, ty1, ty2;
/* Our texture coordinates MUST be scaled, while the actual vertex coords
* MUST NOT be scaled. */
/* Top left */
if (top_height > 0 && left_width > 0)
{
x1 = min_x;
x2 = min_x + left_width;
y1 = min_y;
y2 = min_y + top_height;
tx1 = 0;
tx2 = (left_width * scale) / texture_width;
ty1 = 1 - (top_height * scale / texture_height);
ty2 = 1;
g_assert_cmpfloat (x1, <=, x2);
g_assert_cmpfloat (y1, <=, y2);
g_assert_cmpfloat (tx1, <=, tx2);
g_assert_cmpfloat (ty1, <=, ty2);
ops_draw (builder, (GskQuadVertex[GL_N_VERTICES]) {
{ { x1, y1 }, { tx1, ty2 }, },
{ { x1, y2 }, { tx1, ty1 }, },
{ { x2, y1 }, { tx2, ty2 }, },
{ { x2, y2 }, { tx2, ty1 }, },
{ { x1, y2 }, { tx1, ty1 }, },
{ { x2, y1 }, { tx2, ty2 }, },
});
}
/* Top side */
if (top_height > 0 && center_width > 0)
{
x1 = min_x + left_width;
x2 = x1 + center_width;
y1 = min_y;
y2 = min_y + top_height;
tx1 = left_width * scale / texture_width;
tx2 = 1.0 - (right_width * scale / texture_width);
ty1 = 1 - (top_height * scale / texture_height);
ty2 = 1;
g_assert_cmpfloat (x1, <=, x2);
g_assert_cmpfloat (y1, <=, y2);
g_assert_cmpfloat (tx1, <=, tx2);
g_assert_cmpfloat (ty1, <=, ty2);
ops_draw (builder, (GskQuadVertex[GL_N_VERTICES]) {
{ { x1, y1 }, { tx1, ty2 }, },
{ { x1, y2 }, { tx1, ty1 }, },
{ { x2, y1 }, { tx2, ty2 }, },
{ { x2, y2 }, { tx2, ty1 }, },
{ { x1, y2 }, { tx1, ty1 }, },
{ { x2, y1 }, { tx2, ty2 }, },
});
}
/* Top right */
if (top_height > 0 && right_width > 0)
{
x1 = max_x - right_width;
x2 = max_x;
y1 = min_y;
y2 = min_y + top_height;
tx1 = 1 - (right_width * scale / texture_width);
tx2 = 1;
ty1 = 1 - (top_height * scale / texture_height);
ty2 = 1;
ops_draw (builder, (GskQuadVertex[GL_N_VERTICES]) {
{ { x1, y1 }, { tx1, ty2 }, },
{ { x1, y2 }, { tx1, ty1 }, },
{ { x2, y1 }, { tx2, ty2 }, },
{ { x2, y2 }, { tx2, ty1 }, },
{ { x1, y2 }, { tx1, ty1 }, },
{ { x2, y1 }, { tx2, ty2 }, },
});
}
/* Bottom right */
if (bottom_height > 0 && left_width > 0)
{
x1 = max_x - right_width;
x2 = max_x;
y1 = max_y - bottom_height;
y2 = max_y;
tx1 = 1 - (right_width * scale / texture_width);
tx2 = 1;
ty1 = 0;
ty2 = (bottom_height * scale / texture_height);
ops_draw (builder, (GskQuadVertex[GL_N_VERTICES]) {
{ { x1, y1 }, { tx1, ty2 }, },
{ { x1, y2 }, { tx1, ty1 }, },
{ { x2, y1 }, { tx2, ty2 }, },
{ { x2, y2 }, { tx2, ty1 }, },
{ { x1, y2 }, { tx1, ty1 }, },
{ { x2, y1 }, { tx2, ty2 }, },
});
}
/* Bottom left */
if (bottom_height > 0 && left_width > 0)
{
x1 = min_x;
x2 = min_x + left_width;
y1 = max_y - bottom_height;
y2 = max_y;
tx1 = 0;
tx2 = left_width * scale / texture_width;
ty1 = 0;
ty2 = bottom_height * scale / texture_height;
ops_draw (builder, (GskQuadVertex[GL_N_VERTICES]) {
{ { x1, y1 }, { tx1, ty2 }, },
{ { x1, y2 }, { tx1, ty1 }, },
{ { x2, y1 }, { tx2, ty2 }, },
{ { x2, y2 }, { tx2, ty1 }, },
{ { x1, y2 }, { tx1, ty1 }, },
{ { x2, y1 }, { tx2, ty2 }, },
});
}
/* Left side */
if (left_width > 0)
{
x1 = min_x;
x2 = min_x + left_width;
y1 = min_y + top_height;
y2 = y1 + center_height;
tx1 = 0;
tx2 = left_width * scale / texture_width;
ty1 = top_height * scale / texture_height;
ty2 = 1.0 - (bottom_height * scale / texture_height);
g_assert_cmpfloat (x1, <=, x2);
g_assert_cmpfloat (y1, <=, y2);
g_assert_cmpfloat (tx1, <=, tx2);
g_assert_cmpfloat (ty1, <=, ty2);
ops_draw (builder, (GskQuadVertex[GL_N_VERTICES]) {
{ { x1, y1 }, { tx1, ty2 }, },
{ { x1, y2 }, { tx1, ty1 }, },
{ { x2, y1 }, { tx2, ty2 }, },
{ { x2, y2 }, { tx2, ty1 }, },
{ { x1, y2 }, { tx1, ty1 }, },
{ { x2, y1 }, { tx2, ty2 }, },
});
}
/* Right side */
if (right_width > 0)
{
x1 = max_x - right_width;
x2 = max_x;
y1 = min_y + top_height;
y2 = y1 + center_height;
tx1 = 1 - (right_width * scale / texture_width);
tx2 = 1;
ty1 = top_height * scale / texture_height;
ty2 = 1.0 - (bottom_height * scale / texture_height);
ops_draw (builder, (GskQuadVertex[GL_N_VERTICES]) {
{ { x1, y1 }, { tx1, ty2 }, },
{ { x1, y2 }, { tx1, ty1 }, },
{ { x2, y1 }, { tx2, ty2 }, },
{ { x2, y2 }, { tx2, ty1 }, },
{ { x1, y2 }, { tx1, ty1 }, },
{ { x2, y1 }, { tx2, ty2 }, },
});
}
/* Bottom side */
if (bottom_height > 0)
{
x1 = min_x + left_width;
x2 = max_x - right_width;
y1 = max_y - bottom_height;
y2 = max_y;
tx1 = left_width * scale / texture_width;
tx2 = 1.0 - (right_width * scale / texture_width);
ty1 = 0;
ty2 = bottom_height * scale / texture_height;
ops_draw (builder, (GskQuadVertex[GL_N_VERTICES]) {
{ { x1, y1 }, { tx1, ty2 }, },
{ { x1, y2 }, { tx1, ty1 }, },
{ { x2, y1 }, { tx2, ty2 }, },
{ { x2, y2 }, { tx2, ty1 }, },
{ { x1, y2 }, { tx1, ty1 }, },
{ { x2, y1 }, { tx2, ty2 }, },
});
}
/* Middle */
if (center_width > 0 && center_height > 0)
{
x1 = min_x + left_width;
x2 = max_x - right_width;
y1 = min_y + top_height;
y2 = max_y - bottom_height;
tx1 = left_width * scale / texture_width;
tx2 = 1.0 - (right_width * scale / texture_width);
ty1 = top_height * scale / texture_height;
ty2 = 1.0 - (bottom_height * scale / texture_height);
ops_draw (builder, (GskQuadVertex[GL_N_VERTICES]) {
{ { x1, y1 }, { tx1, ty2 }, },
{ { x1, y2 }, { tx1, ty1 }, },
{ { x2, y1 }, { tx2, ty2 }, },
{ { x2, y2 }, { tx2, ty1 }, },
{ { x1, y2 }, { tx1, ty1 }, },
{ { x2, y1 }, { tx2, ty2 }, },
});
}
}
}
static inline void
render_shadow_node (GskGLRenderer *self,
GskRenderNode *node,
RenderOpBuilder *builder)
{
const gsize n_shadows = gsk_shadow_node_get_n_shadows (node);
GskRenderNode *original_child = gsk_shadow_node_get_child (node);
GskRenderNode *shadow_child = original_child;
guint i;
/* Shadow nodes recolor every pixel of the source texture, but leave the alpha in tact.
* If the child is a color matrix node that doesn't touch the alpha, we can throw that away. */
if (gsk_render_node_get_node_type (shadow_child) == GSK_COLOR_MATRIX_NODE &&
!color_matrix_modifies_alpha (shadow_child))
{
shadow_child = gsk_color_matrix_node_get_child (shadow_child);
}
for (i = 0; i < n_shadows; i ++)
{
const GskShadow *shadow = gsk_shadow_node_peek_shadow (node, i);
const float dx = shadow->dx;
const float dy = shadow->dy;
TextureRegion region;
gboolean is_offscreen;
float min_x;
float min_y;
float max_x;
float max_y;
if (shadow->radius == 0 &&
gsk_render_node_get_node_type (shadow_child) == GSK_TEXT_NODE)
{
ops_offset (builder, dx, dy);
render_text_node (self, shadow_child, builder, &shadow->color, TRUE);
ops_offset (builder, - dx, - dy);
continue;
}
if (gdk_rgba_is_clear (&shadow->color))
continue;
if (node_is_invisible (shadow_child))
continue;
if (shadow->radius > 0)
{
blur_node (self, shadow_child, builder, shadow->radius, NO_CACHE_PLZ, &region,
(float*[4]){&min_x, &max_x, &min_y, &max_y});
is_offscreen = TRUE;
}
else if (dx == 0 && dy == 0)
{
continue; /* Invisible anyway */
}
else
{
if (!add_offscreen_ops (self, builder,
&shadow_child->bounds,
shadow_child, &region, &is_offscreen,
RESET_CLIP | RESET_OPACITY | NO_CACHE_PLZ))
g_assert_not_reached ();
min_x = builder->dx + shadow_child->bounds.origin.x;
min_y = builder->dy + shadow_child->bounds.origin.y;
max_x = min_x + shadow_child->bounds.size.width;
max_y = min_y + shadow_child->bounds.size.height;
}
ops_set_program (builder, &self->coloring_program);
ops_set_color (builder, &shadow->color);
ops_set_texture (builder, region.texture_id);
if (is_offscreen)
{
const GskQuadVertex offscreen_vertex_data[GL_N_VERTICES] = {
{ { dx + min_x, dy + min_y }, { region.x, region.y2 }, },
{ { dx + min_x, dy + max_y }, { region.x, region.y }, },
{ { dx + max_x, dy + min_y }, { region.x2, region.y2 }, },
{ { dx + max_x, dy + max_y }, { region.x2, region.y }, },
{ { dx + min_x, dy + max_y }, { region.x, region.y }, },
{ { dx + max_x, dy + min_y }, { region.x2, region.y2 }, },
};
ops_draw (builder, offscreen_vertex_data);
}
else
{
const GskQuadVertex onscreen_vertex_data[GL_N_VERTICES] = {
{ { dx + min_x, dy + min_y }, { region.x, region.y }, },
{ { dx + min_x, dy + max_y }, { region.x, region.y2 }, },
{ { dx + max_x, dy + min_y }, { region.x2, region.y }, },
{ { dx + max_x, dy + max_y }, { region.x2, region.y2 }, },
{ { dx + min_x, dy + max_y }, { region.x, region.y2 }, },
{ { dx + max_x, dy + min_y }, { region.x2, region.y }, },
};
ops_draw (builder, onscreen_vertex_data);
}
}
/* Now draw the child normally */
gsk_gl_renderer_add_render_ops (self, original_child, builder);
}
static inline void
render_cross_fade_node (GskGLRenderer *self,
GskRenderNode *node,
RenderOpBuilder *builder)
{
GskRenderNode *start_node = gsk_cross_fade_node_get_start_child (node);
GskRenderNode *end_node = gsk_cross_fade_node_get_end_child (node);
float progress = gsk_cross_fade_node_get_progress (node);
TextureRegion start_region;
TextureRegion end_region;
gboolean is_offscreen1, is_offscreen2;
OpCrossFade *op;
/* TODO: We create 2 textures here as big as the cross-fade node, but both the
* start and the end node might be a lot smaller than that. */
if (!add_offscreen_ops (self, builder,
&node->bounds,
start_node,
&start_region, &is_offscreen1,
FORCE_OFFSCREEN | RESET_CLIP | RESET_OPACITY))
g_assert_not_reached ();
if (!add_offscreen_ops (self, builder,
&node->bounds,
end_node,
&end_region, &is_offscreen2,
FORCE_OFFSCREEN | RESET_CLIP | RESET_OPACITY))
g_assert_not_reached ();
ops_set_program (builder, &self->cross_fade_program);
op = ops_begin (builder, OP_CHANGE_CROSS_FADE);
op->progress = progress;
op->source2 = end_region.texture_id;
ops_set_texture (builder, start_region.texture_id);
load_offscreen_vertex_data (ops_draw (builder, NULL), node, builder);
}
static inline void
render_blend_node (GskGLRenderer *self,
GskRenderNode *node,
RenderOpBuilder *builder)
{
GskRenderNode *top_child = gsk_blend_node_get_top_child (node);
GskRenderNode *bottom_child = gsk_blend_node_get_bottom_child (node);
TextureRegion top_region;
TextureRegion bottom_region;
gboolean is_offscreen1, is_offscreen2;
OpBlend *op;
/* TODO: We create 2 textures here as big as the blend node, but both the
* start and the end node might be a lot smaller than that. */
if (!add_offscreen_ops (self, builder,
&node->bounds,
bottom_child,
&bottom_region, &is_offscreen1,
FORCE_OFFSCREEN | RESET_CLIP))
{
gsk_gl_renderer_add_render_ops (self, top_child, builder);
return;
}
if (!add_offscreen_ops (self, builder,
&node->bounds,
top_child,
&top_region, &is_offscreen2,
FORCE_OFFSCREEN | RESET_CLIP))
{
load_vertex_data_with_region (ops_draw (builder, NULL),
node,
builder,
&bottom_region,
TRUE);
return;
}
ops_set_program (builder, &self->blend_program);
ops_set_texture (builder, bottom_region.texture_id);
op = ops_begin (builder, OP_CHANGE_BLEND);
op->source2 = top_region.texture_id;
op->mode = gsk_blend_node_get_blend_mode (node);
load_offscreen_vertex_data (ops_draw (builder, NULL), node, builder);
}
static inline void
render_repeat_node (GskGLRenderer *self,
GskRenderNode *node,
RenderOpBuilder *builder)
{
GskRenderNode *child = gsk_repeat_node_get_child (node);
const graphene_rect_t *child_bounds = gsk_repeat_node_peek_child_bounds (node);
TextureRegion region;
gboolean is_offscreen;
OpRepeat *op;
if (node_is_invisible (child))
return;
if (child_bounds != NULL &&
!graphene_rect_equal (child_bounds, &child->bounds))
{
/* TODO: Implement these repeat nodes. */
render_fallback_node (self, node, builder);
return;
}
/* If the size of the repeat node is smaller than the size of the
* child node, we don't repeat at all and can just draw that part
* of the child texture... */
if (graphene_rect_contains_rect (child_bounds, &node->bounds))
{
render_clipped_child (self, builder, &node->bounds, child);
return;
}
/* Draw the entire child on a texture */
if (!add_offscreen_ops (self, builder,
&child->bounds,
child,
&region, &is_offscreen,
RESET_CLIP | RESET_OPACITY))
g_assert_not_reached ();
ops_set_program (builder, &self->repeat_program);
ops_set_texture (builder, region.texture_id);
op = ops_begin (builder, OP_CHANGE_REPEAT);
op->child_bounds[0] = (node->bounds.origin.x - child_bounds->origin.x) / child_bounds->size.width;
op->child_bounds[1] = (node->bounds.origin.y - child_bounds->origin.y) / child_bounds->size.height;
op->child_bounds[2] = node->bounds.size.width / child_bounds->size.width;
op->child_bounds[3] = node->bounds.size.height / child_bounds->size.height;
op->texture_rect[0] = region.x;
op->texture_rect[2] = region.x2;
if (is_offscreen)
{
op->texture_rect[1] = region.y2;
op->texture_rect[3] = region.y;
}
else
{
op->texture_rect[1] = region.y;
op->texture_rect[3] = region.y2;
}
load_vertex_data_with_region (ops_draw (builder, NULL),
node, builder,
&region,
is_offscreen);
}
static inline void
apply_viewport_op (const Program *program,
const OpViewport *op)
{
OP_PRINT (" -> New Viewport: %f, %f, %f, %f",
op->viewport.origin.x, op->viewport.origin.y,
op->viewport.size.width, op->viewport.size.height);
glUniform4f (program->viewport_location,
op->viewport.origin.x, op->viewport.origin.y,
op->viewport.size.width, op->viewport.size.height);
glViewport (0, 0, op->viewport.size.width, op->viewport.size.height);
}
static inline void
apply_modelview_op (const Program *program,
const OpMatrix *op)
{
float mat[16];
OP_PRINT (" -> Modelview");
graphene_matrix_to_float (&op->matrix, mat);
glUniformMatrix4fv (program->modelview_location, 1, GL_FALSE, mat);
}
static inline void
apply_projection_op (const Program *program,
const OpMatrix *op)
{
float mat[16];
OP_PRINT (" -> Projection");
graphene_matrix_to_float (&op->matrix, mat);
glUniformMatrix4fv (program->projection_location, 1, GL_FALSE, mat);
}
static inline void
apply_program_op (const Program *program,
const OpProgram *op)
{
OP_PRINT (" -> Program: %d", op->program->index);
glUseProgram (op->program->id);
}
static inline void
apply_render_target_op (GskGLRenderer *self,
const Program *program,
const OpRenderTarget *op)
{
OP_PRINT (" -> Render Target: %d", op->render_target_id);
glBindFramebuffer (GL_FRAMEBUFFER, op->render_target_id);
if (op->render_target_id != 0)
glDisable (GL_SCISSOR_TEST);
else
gsk_gl_renderer_setup_render_mode (self); /* Reset glScissor etc. */
}
static inline void
apply_color_op (const Program *program,
const OpColor *op)
{
OP_PRINT (" -> Color: (%f, %f, %f, %f)",
op->rgba->red, op->rgba->green, op->rgba->blue, op->rgba->alpha);
glUniform4fv (program->color.color_location, 1, (float *)op->rgba);
}
static inline void
apply_opacity_op (const Program *program,
const OpOpacity *op)
{
OP_PRINT (" -> Opacity %f", op->opacity);
glUniform1f (program->alpha_location, op->opacity);
}
static inline void
apply_source_texture_op (const Program *program,
const OpTexture *op)
{
g_assert(op->texture_id != 0);
OP_PRINT (" -> New texture: %d", op->texture_id);
/* Use texture unit 0 for the source */
glUniform1i (program->source_location, 0);
glActiveTexture (GL_TEXTURE0);
glBindTexture (GL_TEXTURE_2D, op->texture_id);
}
static inline void
apply_color_matrix_op (const Program *program,
const OpColorMatrix *op)
{
float mat[16];
float vec[4];
OP_PRINT (" -> Color Matrix");
graphene_matrix_to_float (op->matrix, mat);
glUniformMatrix4fv (program->color_matrix.color_matrix_location, 1, GL_FALSE, mat);
graphene_vec4_to_float (op->offset, vec);
glUniform4fv (program->color_matrix.color_offset_location, 1, vec);
}
static inline void
apply_clip_op (const Program *program,
const OpClip *op)
{
int count;
if (op->send_corners)
{
OP_PRINT (" -> Clip: %s", gsk_rounded_rect_to_string (&op->clip));
count = 3;
}
else
{
OP_PRINT (" -> clip: %f, %f, %f, %f",
op->clip.bounds.origin.x, op->clip.bounds.origin.y,
op->clip.bounds.size.width, op->clip.bounds.size.height);
count = 1;
}
glUniform4fv (program->clip_rect_location, count, (float *)&op->clip.bounds);
}
static inline void
apply_inset_shadow_op (const Program *program,
const OpShadow *op)
{
OP_PRINT (" -> inset shadow. Color: %s, Offset: (%f, %f), Spread: %f, Outline: %s",
gdk_rgba_to_string (op->color),
op->offset[0],
op->offset[1],
op->spread,
gsk_rounded_rect_to_string (&op->outline));
glUniform4fv (program->inset_shadow.color_location, 1, (float *)op->color);
glUniform2fv (program->inset_shadow.offset_location, 1, op->offset);
glUniform1f (program->inset_shadow.spread_location, op->spread);
glUniform4fv (program->inset_shadow.outline_rect_location, 3, (float *)&op->outline.bounds);
}
static inline void
apply_unblurred_outset_shadow_op (const Program *program,
const OpShadow *op)
{
OP_PRINT (" -> unblurred outset shadow");
glUniform4fv (program->unblurred_outset_shadow.color_location, 1, (float *)op->color);
glUniform2fv (program->unblurred_outset_shadow.offset_location, 1, op->offset);
glUniform1f (program->unblurred_outset_shadow.spread_location, op->spread);
glUniform4fv (program->unblurred_outset_shadow.outline_rect_location, 3, (float *)&op->outline.bounds);
}
static inline void
apply_outset_shadow_op (const Program *program,
const OpShadow *op)
{
OP_PRINT (" -> outset shadow");
glUniform4fv (program->outset_shadow.outline_rect_location, 3, (float *)&op->outline.bounds);
}
static inline void
apply_linear_gradient_op (const Program *program,
const OpLinearGradient *op)
{
OP_PRINT (" -> Linear gradient");
glUniform1i (program->linear_gradient.num_color_stops_location, op->n_color_stops);
glUniform1fv (program->linear_gradient.color_stops_location,
op->n_color_stops * 5,
(float *)op->color_stops);
glUniform2f (program->linear_gradient.start_point_location, op->start_point.x, op->start_point.y);
glUniform2f (program->linear_gradient.end_point_location, op->end_point.x, op->end_point.y);
}
static inline void
apply_border_op (const Program *program,
const OpBorder *op)
{
OP_PRINT (" -> Border Outline");
glUniform4fv (program->border.outline_rect_location, 3, (float *)&op->outline.bounds);
}
static inline void
apply_border_width_op (const Program *program,
const OpBorder *op)
{
OP_PRINT (" -> Border width (%f, %f, %f, %f)",
op->widths[0], op->widths[1], op->widths[2], op->widths[3]);
glUniform4fv (program->border.widths_location, 1, op->widths);
}
static inline void
apply_border_color_op (const Program *program,
const OpBorder *op)
{
OP_PRINT (" -> Border color: %s", gdk_rgba_to_string (op->color));
glUniform4fv (program->border.color_location, 1, (float *)op->color);
}
static inline void
apply_blur_op (const Program *program,
const OpBlur *op)
{
OP_PRINT (" -> Blur");
glUniform1f (program->blur.blur_radius_location, op->radius);
glUniform2f (program->blur.blur_size_location, op->size.width, op->size.height);
glUniform2f (program->blur.blur_dir_location, op->dir[0], op->dir[1]);
}
static inline void
apply_cross_fade_op (const Program *program,
const OpCrossFade *op)
{
/* End texture id */
glUniform1i (program->cross_fade.source2_location, 1);
glActiveTexture (GL_TEXTURE0 + 1);
glBindTexture (GL_TEXTURE_2D, op->source2);
/* progress */
glUniform1f (program->cross_fade.progress_location, op->progress);
}
static inline void
apply_blend_op (const Program *program,
const OpBlend *op)
{
/* End texture id */
glUniform1i (program->blend.source2_location, 1);
glActiveTexture (GL_TEXTURE0 + 1);
glBindTexture (GL_TEXTURE_2D, op->source2);
/* progress */
glUniform1i (program->blend.mode_location, op->mode);
}
static inline void
apply_repeat_op (const Program *program,
const OpRepeat *op)
{
glUniform4fv (program->repeat.child_bounds_location, 1, op->child_bounds);
glUniform4fv (program->repeat.texture_rect_location, 1, op->texture_rect);
}
static void
gsk_gl_renderer_dispose (GObject *gobject)
{
GskGLRenderer *self = GSK_GL_RENDERER (gobject);
ops_free (&self->op_builder);
G_OBJECT_CLASS (gsk_gl_renderer_parent_class)->dispose (gobject);
}
static gboolean
gsk_gl_renderer_create_programs (GskGLRenderer *self,
GError **error)
{
GskGLShaderBuilder shader_builder;
int i;
static const struct {
const char *resource_path;
const char *name;
} program_definitions[] = {
{ "/org/gtk/libgsk/glsl/blend.glsl", "blend" },
{ "/org/gtk/libgsk/glsl/blit.glsl", "blit" },
{ "/org/gtk/libgsk/glsl/blur.glsl", "blur" },
{ "/org/gtk/libgsk/glsl/border.glsl", "border" },
{ "/org/gtk/libgsk/glsl/color_matrix.glsl", "color matrix" },
{ "/org/gtk/libgsk/glsl/color.glsl", "color" },
{ "/org/gtk/libgsk/glsl/coloring.glsl", "coloring" },
{ "/org/gtk/libgsk/glsl/cross_fade.glsl", "cross fade" },
{ "/org/gtk/libgsk/glsl/inset_shadow.glsl", "inset shadow" },
{ "/org/gtk/libgsk/glsl/linear_gradient.glsl", "linear gradient" },
{ "/org/gtk/libgsk/glsl/outset_shadow.glsl", "outset shadow" },
{ "/org/gtk/libgsk/glsl/repeat.glsl", "repeat" },
{ "/org/gtk/libgsk/glsl/unblurred_outset_shadow.glsl", "unblurred_outset shadow" },
};
gboolean success = TRUE;
gsk_gl_shader_builder_init (&shader_builder,
"/org/gtk/libgsk/glsl/preamble.vs.glsl",
"/org/gtk/libgsk/glsl/preamble.fs.glsl");
g_assert (G_N_ELEMENTS (program_definitions) == GL_N_PROGRAMS);
#ifdef G_ENABLE_DEBUG
if (GSK_RENDERER_DEBUG_CHECK (GSK_RENDERER (self), SHADERS))
shader_builder.debugging = TRUE;
#endif
if (gdk_gl_context_get_use_es (self->gl_context))
{
gsk_gl_shader_builder_set_glsl_version (&shader_builder, SHADER_VERSION_GLES);
shader_builder.gles = TRUE;
}
else if (gdk_gl_context_is_legacy (self->gl_context))
{
int maj, min;
gdk_gl_context_get_version (self->gl_context, &maj, &min);
if (maj == 3)
gsk_gl_shader_builder_set_glsl_version (&shader_builder, SHADER_VERSION_GL3_LEGACY);
else
gsk_gl_shader_builder_set_glsl_version (&shader_builder, SHADER_VERSION_GL2_LEGACY);
shader_builder.legacy = TRUE;
}
else
{
gsk_gl_shader_builder_set_glsl_version (&shader_builder, SHADER_VERSION_GL3);
shader_builder.gl3 = TRUE;
}
for (i = 0; i < GL_N_PROGRAMS; i ++)
{
Program *prog = &self->programs[i];
prog->index = i;
prog->id = gsk_gl_shader_builder_create_program (&shader_builder,
program_definitions[i].resource_path,
error);
if (prog->id < 0)
{
success = FALSE;
goto out;
}
INIT_COMMON_UNIFORM_LOCATION (prog, alpha);
INIT_COMMON_UNIFORM_LOCATION (prog, source);
INIT_COMMON_UNIFORM_LOCATION (prog, clip_rect);
INIT_COMMON_UNIFORM_LOCATION (prog, viewport);
INIT_COMMON_UNIFORM_LOCATION (prog, projection);
INIT_COMMON_UNIFORM_LOCATION (prog, modelview);
}
/* color */
INIT_PROGRAM_UNIFORM_LOCATION (color, color);
/* coloring */
INIT_PROGRAM_UNIFORM_LOCATION (coloring, color);
/* color matrix */
INIT_PROGRAM_UNIFORM_LOCATION (color_matrix, color_matrix);
INIT_PROGRAM_UNIFORM_LOCATION (color_matrix, color_offset);
/* linear gradient */
INIT_PROGRAM_UNIFORM_LOCATION (linear_gradient, color_stops);
INIT_PROGRAM_UNIFORM_LOCATION (linear_gradient, num_color_stops);
INIT_PROGRAM_UNIFORM_LOCATION (linear_gradient, start_point);
INIT_PROGRAM_UNIFORM_LOCATION (linear_gradient, end_point);
/* blur */
INIT_PROGRAM_UNIFORM_LOCATION (blur, blur_radius);
INIT_PROGRAM_UNIFORM_LOCATION (blur, blur_size);
INIT_PROGRAM_UNIFORM_LOCATION (blur, blur_dir);
/* inset shadow */
INIT_PROGRAM_UNIFORM_LOCATION (inset_shadow, color);
INIT_PROGRAM_UNIFORM_LOCATION (inset_shadow, spread);
INIT_PROGRAM_UNIFORM_LOCATION (inset_shadow, offset);
INIT_PROGRAM_UNIFORM_LOCATION (inset_shadow, outline_rect);
/* outset shadow */
INIT_PROGRAM_UNIFORM_LOCATION (outset_shadow, outline_rect);
/* unblurred outset shadow */
INIT_PROGRAM_UNIFORM_LOCATION (unblurred_outset_shadow, color);
INIT_PROGRAM_UNIFORM_LOCATION (unblurred_outset_shadow, spread);
INIT_PROGRAM_UNIFORM_LOCATION (unblurred_outset_shadow, offset);
INIT_PROGRAM_UNIFORM_LOCATION (unblurred_outset_shadow, outline_rect);
/* border */
INIT_PROGRAM_UNIFORM_LOCATION (border, color);
INIT_PROGRAM_UNIFORM_LOCATION (border, widths);
INIT_PROGRAM_UNIFORM_LOCATION (border, outline_rect);
/* cross fade */
INIT_PROGRAM_UNIFORM_LOCATION (cross_fade, progress);
INIT_PROGRAM_UNIFORM_LOCATION (cross_fade, source2);
/* blend */
INIT_PROGRAM_UNIFORM_LOCATION (blend, source2);
INIT_PROGRAM_UNIFORM_LOCATION (blend, mode);
/* repeat */
INIT_PROGRAM_UNIFORM_LOCATION (repeat, child_bounds);
INIT_PROGRAM_UNIFORM_LOCATION (repeat, texture_rect);
/* We initialize the alpha uniform here, since the default value is important.
* We can't do it in the shader like a resonable person would because that doesn't
* work in gles. */
for (i = 0; i < GL_N_PROGRAMS; i++)
{
glUseProgram(self->programs[i].id);
glUniform1f (self->programs[i].alpha_location, 1.0);
}
out:
gsk_gl_shader_builder_finish (&shader_builder);
return success;
}
static GskGLTextureAtlases *
get_texture_atlases_for_display (GdkDisplay *display)
{
GskGLTextureAtlases *atlases;
if (g_getenv ("GSK_NO_SHARED_CACHES"))
return gsk_gl_texture_atlases_new ();
atlases = (GskGLTextureAtlases*)g_object_get_data (G_OBJECT (display), "gsk-gl-texture-atlases");
if (atlases == NULL)
{
atlases = gsk_gl_texture_atlases_new ();
g_object_set_data_full (G_OBJECT (display), "gsk-gl-texture-atlases",
atlases,
(GDestroyNotify) gsk_gl_texture_atlases_unref);
}
return gsk_gl_texture_atlases_ref (atlases);
}
static GskGLGlyphCache *
get_glyph_cache_for_display (GdkDisplay *display,
GskGLTextureAtlases *atlases)
{
GskGLGlyphCache *glyph_cache;
if (g_getenv ("GSK_NO_SHARED_CACHES"))
return gsk_gl_glyph_cache_new (display, atlases);
glyph_cache = (GskGLGlyphCache*)g_object_get_data (G_OBJECT (display), "gsk-gl-glyph-cache");
if (glyph_cache == NULL)
{
glyph_cache = gsk_gl_glyph_cache_new (display, atlases);
g_object_set_data_full (G_OBJECT (display), "gsk-gl-glyph-cache",
glyph_cache,
(GDestroyNotify) gsk_gl_glyph_cache_unref);
}
return gsk_gl_glyph_cache_ref (glyph_cache);
}
static GskGLIconCache *
get_icon_cache_for_display (GdkDisplay *display,
GskGLTextureAtlases *atlases)
{
GskGLIconCache *icon_cache;
if (g_getenv ("GSK_NO_SHARED_CACHES"))
return gsk_gl_icon_cache_new (display, atlases);
icon_cache = (GskGLIconCache*)g_object_get_data (G_OBJECT (display), "gsk-gl-icon-cache");
if (icon_cache == NULL)
{
icon_cache = gsk_gl_icon_cache_new (display, atlases);
g_object_set_data_full (G_OBJECT (display), "gsk-gl-icon-cache",
icon_cache,
(GDestroyNotify) gsk_gl_icon_cache_unref);
}
return gsk_gl_icon_cache_ref (icon_cache);
}
static gboolean
gsk_gl_renderer_realize (GskRenderer *renderer,
GdkSurface *surface,
GError **error)
{
GskGLRenderer *self = GSK_GL_RENDERER (renderer);
/* If we didn't get a GdkGLContext before realization, try creating
* one now, for our exclusive use.
*/
if (self->gl_context == NULL)
{
self->gl_context = gdk_surface_create_gl_context (surface, error);
if (self->gl_context == NULL)
return FALSE;
}
if (!gdk_gl_context_realize (self->gl_context, error))
return FALSE;
gdk_gl_context_make_current (self->gl_context);
g_assert (self->gl_driver == NULL);
self->gl_profiler = gsk_gl_profiler_new (self->gl_context);
self->gl_driver = gsk_gl_driver_new (self->gl_context);
GSK_RENDERER_NOTE (renderer, OPENGL, g_message ("Creating buffers and programs"));
if (!gsk_gl_renderer_create_programs (self, error))
return FALSE;
self->atlases = get_texture_atlases_for_display (gdk_surface_get_display (surface));
self->glyph_cache = get_glyph_cache_for_display (gdk_surface_get_display (surface), self->atlases);
self->icon_cache = get_icon_cache_for_display (gdk_surface_get_display (surface), self->atlases);
gsk_gl_shadow_cache_init (&self->shadow_cache);
return TRUE;
}
static void
gsk_gl_renderer_unrealize (GskRenderer *renderer)
{
GskGLRenderer *self = GSK_GL_RENDERER (renderer);
guint i;
if (self->gl_context == NULL)
return;
gdk_gl_context_make_current (self->gl_context);
/* We don't need to iterate to destroy the associated GL resources,
* as they will be dropped when we finalize the GskGLDriver
*/
ops_reset (&self->op_builder);
for (i = 0; i < GL_N_PROGRAMS; i ++)
glDeleteProgram (self->programs[i].id);
g_clear_pointer (&self->glyph_cache, gsk_gl_glyph_cache_unref);
g_clear_pointer (&self->icon_cache, gsk_gl_icon_cache_unref);
g_clear_pointer (&self->atlases, gsk_gl_texture_atlases_unref);
gsk_gl_shadow_cache_free (&self->shadow_cache, self->gl_driver);
g_clear_object (&self->gl_profiler);
g_clear_object (&self->gl_driver);
if (self->gl_context == gdk_gl_context_get_current ())
gdk_gl_context_clear_current ();
g_clear_object (&self->gl_context);
}
static void
gsk_gl_renderer_clear_tree (GskGLRenderer *self)
{
int removed_textures;
if (self->gl_context == NULL)
return;
gdk_gl_context_make_current (self->gl_context);
ops_reset (&self->op_builder);
removed_textures = gsk_gl_driver_collect_textures (self->gl_driver);
GSK_RENDERER_NOTE (GSK_RENDERER (self), OPENGL, g_message ("Collected: %d textures", removed_textures));
}
static void
gsk_gl_renderer_clear (GskGLRenderer *self)
{
GSK_RENDERER_NOTE (GSK_RENDERER (self), OPENGL, g_message ("Clearing viewport"));
glClearColor (0, 0, 0, 0);
glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
}
static void
gsk_gl_renderer_setup_render_mode (GskGLRenderer *self)
{
if (self->render_region == NULL)
{
glDisable (GL_SCISSOR_TEST);
}
else
{
GdkSurface *surface = gsk_renderer_get_surface (GSK_RENDERER (self));
cairo_rectangle_int_t extents;
int surface_height;
g_assert (cairo_region_num_rectangles (self->render_region) == 1);
surface_height = gdk_surface_get_height (surface) * self->scale_factor;
cairo_region_get_rectangle (self->render_region, 0, &extents);
glEnable (GL_SCISSOR_TEST);
glScissor (extents.x * self->scale_factor,
surface_height - (extents.height * self->scale_factor) - (extents.y * self->scale_factor),
extents.width * self->scale_factor,
extents.height * self->scale_factor);
}
}
static void
gsk_gl_renderer_add_render_ops (GskGLRenderer *self,
GskRenderNode *node,
RenderOpBuilder *builder)
{
/* This can still happen, even if the render nodes are created using
* GtkSnapshot, so let's juse be safe. */
if (node_is_invisible (node))
return;
/* Check whether the render node is entirely out of the current
* already transformed clip region */
{
graphene_rect_t transformed_node_bounds;
ops_transform_bounds_modelview (builder,
&node->bounds,
&transformed_node_bounds);
if (!graphene_rect_intersection (&builder->current_clip->bounds,
&transformed_node_bounds, NULL))
return;
}
switch (gsk_render_node_get_node_type (node))
{
case GSK_NOT_A_RENDER_NODE:
g_assert_not_reached ();
case GSK_CONTAINER_NODE:
{
guint i, p;
for (i = 0, p = gsk_container_node_get_n_children (node); i < p; i ++)
{
GskRenderNode *child = gsk_container_node_get_child (node, i);
gsk_gl_renderer_add_render_ops (self, child, builder);
}
}
break;
case GSK_DEBUG_NODE:
{
const char *message = gsk_debug_node_get_message (node);
if (message)
ops_push_debug_group (builder, message);
gsk_gl_renderer_add_render_ops (self,
gsk_debug_node_get_child (node),
builder);
if (message)
ops_pop_debug_group (builder);
}
break;
case GSK_COLOR_NODE:
render_color_node (self, node, builder);
break;
case GSK_TEXTURE_NODE:
render_texture_node (self, node, builder);
break;
case GSK_TRANSFORM_NODE:
render_transform_node (self, node, builder);
break;
case GSK_OPACITY_NODE:
render_opacity_node (self, node, builder);
break;
case GSK_LINEAR_GRADIENT_NODE:
render_linear_gradient_node (self, node, builder);
break;
case GSK_CLIP_NODE:
render_clip_node (self, node, builder);
break;
case GSK_ROUNDED_CLIP_NODE:
render_rounded_clip_node (self, node, builder);
break;
case GSK_TEXT_NODE:
render_text_node (self, node, builder,
gsk_text_node_peek_color (node), FALSE);
break;
case GSK_COLOR_MATRIX_NODE:
render_color_matrix_node (self, node, builder);
break;
case GSK_BLUR_NODE:
render_blur_node (self, node, builder);
break;
case GSK_INSET_SHADOW_NODE:
if (gsk_inset_shadow_node_get_blur_radius (node) > 0)
render_inset_shadow_node (self, node, builder);
else
render_unblurred_inset_shadow_node (self, node, builder);
break;
case GSK_OUTSET_SHADOW_NODE:
if (gsk_outset_shadow_node_get_blur_radius (node) > 0)
render_outset_shadow_node (self, node, builder);
else
render_unblurred_outset_shadow_node (self, node, builder);
break;
case GSK_SHADOW_NODE:
render_shadow_node (self, node, builder);
break;
case GSK_BORDER_NODE:
render_border_node (self, node, builder);
break;
case GSK_CROSS_FADE_NODE:
render_cross_fade_node (self, node, builder);
break;
case GSK_BLEND_NODE:
render_blend_node (self, node, builder);
break;
case GSK_REPEAT_NODE:
render_repeat_node (self, node, builder);
break;
case GSK_REPEATING_LINEAR_GRADIENT_NODE:
case GSK_CAIRO_NODE:
default:
{
render_fallback_node (self, node, builder);
}
}
}
static gboolean
add_offscreen_ops (GskGLRenderer *self,
RenderOpBuilder *builder,
const graphene_rect_t *bounds,
GskRenderNode *child_node,
TextureRegion *texture_region_out,
gboolean *is_offscreen,
guint flags)
{
const float scale = ops_get_scale (builder);
const float width = ceilf (bounds->size.width * scale);
const float height = ceilf (bounds->size.height * scale);
const float dx = builder->dx;
const float dy = builder->dy;
int render_target;
int prev_render_target;
graphene_matrix_t prev_projection;
graphene_rect_t prev_viewport;
graphene_matrix_t item_proj;
float prev_opacity;
int texture_id = 0;
if (node_is_invisible (child_node))
{
/* Just to be safe */
*is_offscreen = FALSE;
init_full_texture_region (texture_region_out, 0);
return FALSE;
}
/* We need the child node as a texture. If it already is one, we don't need to draw
* it on a framebuffer of course. */
if (gsk_render_node_get_node_type (child_node) == GSK_TEXTURE_NODE &&
(flags & FORCE_OFFSCREEN) == 0)
{
GdkTexture *texture = gsk_texture_node_get_texture (child_node);
upload_texture (self, texture, texture_region_out);
*is_offscreen = FALSE;
return TRUE;
}
/* Check if we've already cached the drawn texture. */
{
const int cached_id = gsk_gl_driver_get_texture_for_pointer (self->gl_driver, child_node);
if (cached_id != 0)
{
init_full_texture_region (texture_region_out, cached_id);
/* We didn't render it offscreen, but hand out an offscreen texture id */
*is_offscreen = TRUE;
return TRUE;
}
}
gsk_gl_driver_create_render_target (self->gl_driver, width, height, &texture_id, &render_target);
gdk_gl_context_label_object_printf (self->gl_context, GL_TEXTURE, texture_id,
"Offscreen<%s> %d", child_node->node_class->type_name, texture_id);
gdk_gl_context_label_object_printf (self->gl_context, GL_FRAMEBUFFER, render_target,
"Offscreen<%s> FB %d", child_node->node_class->type_name, render_target);
graphene_matrix_init_ortho (&item_proj,
bounds->origin.x * scale,
(bounds->origin.x + bounds->size.width) * scale,
bounds->origin.y * scale,
(bounds->origin.y + bounds->size.height) * scale,
ORTHO_NEAR_PLANE, ORTHO_FAR_PLANE);
graphene_matrix_scale (&item_proj, 1, -1, 1);
prev_render_target = ops_set_render_target (builder, render_target);
/* Clear since we use this rendertarget for the first time */
ops_begin (builder, OP_CLEAR);
prev_projection = ops_set_projection (builder, &item_proj);
ops_set_modelview (builder, gsk_transform_scale (NULL, scale, scale));
prev_viewport = ops_set_viewport (builder,
&GRAPHENE_RECT_INIT (bounds->origin.x * scale,
bounds->origin.y * scale,
width, height));
if (flags & RESET_CLIP)
ops_push_clip (builder,
&GSK_ROUNDED_RECT_INIT (bounds->origin.x * scale,
bounds->origin.y * scale,
width, height));
if (flags & CENTER_CHILD)
{
ops_offset (builder,
(bounds->size.width - child_node->bounds.size.width) / 2.0 -
child_node->bounds.origin.x,
(bounds->size.height - child_node->bounds.size.height) / 2.0 -
child_node->bounds.origin.y);
}
else
{
builder->dx = 0;
builder->dy = 0;
}
if (flags & RESET_OPACITY)
prev_opacity = ops_set_opacity (builder, 1.0);
gsk_gl_renderer_add_render_ops (self, child_node, builder);
#ifdef G_ENABLE_DEBUG
if (G_UNLIKELY (flags & DUMP_FRAMEBUFFER))
{
static int k;
ops_dump_framebuffer (builder, g_strdup_printf ("%s_%p_%d.png",
child_node->node_class->type_name,
child_node,
k ++),
width, height);
}
#endif
if (flags & RESET_OPACITY)
ops_set_opacity (builder, prev_opacity);
builder->dx = dx;
builder->dy = dy;
if (flags & RESET_CLIP)
ops_pop_clip (builder);
ops_set_viewport (builder, &prev_viewport);
ops_pop_modelview (builder);
ops_set_projection (builder, &prev_projection);
ops_set_render_target (builder, prev_render_target);
*is_offscreen = TRUE;
init_full_texture_region (texture_region_out, texture_id);
if ((flags & NO_CACHE_PLZ) == 0)
gsk_gl_driver_set_texture_for_pointer (self->gl_driver, child_node, texture_id);
return TRUE;
}
static void
gsk_gl_renderer_render_ops (GskGLRenderer *self)
{
const Program *program = NULL;
const gsize vertex_data_size = self->op_builder.vertices->len * sizeof (GskQuadVertex);
const float *vertex_data = (float *)self->op_builder.vertices->data;
OpBufferIter iter;
OpKind kind;
gpointer ptr;
GLuint buffer_id, vao_id;
#if DEBUG_OPS
g_print ("============================================\n");
#endif
glGenVertexArrays (1, &vao_id);
glBindVertexArray (vao_id);
glGenBuffers (1, &buffer_id);
glBindBuffer (GL_ARRAY_BUFFER, buffer_id);
glBufferData (GL_ARRAY_BUFFER, vertex_data_size, vertex_data, GL_STATIC_DRAW);
/* 0 = position location */
glEnableVertexAttribArray (0);
glVertexAttribPointer (0, 2, GL_FLOAT, GL_FALSE,
sizeof (GskQuadVertex),
(void *) G_STRUCT_OFFSET (GskQuadVertex, position));
/* 1 = texture coord location */
glEnableVertexAttribArray (1);
glVertexAttribPointer (1, 2, GL_FLOAT, GL_FALSE,
sizeof (GskQuadVertex),
(void *) G_STRUCT_OFFSET (GskQuadVertex, uv));
op_buffer_iter_init (&iter, ops_get_buffer (&self->op_builder));
while ((ptr = op_buffer_iter_next (&iter, &kind)))
{
if (kind == OP_NONE)
continue;
if (program == NULL &&
kind != OP_PUSH_DEBUG_GROUP &&
kind != OP_POP_DEBUG_GROUP &&
kind != OP_CHANGE_PROGRAM &&
kind != OP_CHANGE_RENDER_TARGET &&
kind != OP_CLEAR)
continue;
OP_PRINT ("Op %u: %u", iter.pos - 2, kind);
switch (kind)
{
case OP_CHANGE_PROJECTION:
apply_projection_op (program, ptr);
break;
case OP_CHANGE_MODELVIEW:
apply_modelview_op (program, ptr);
break;
case OP_CHANGE_PROGRAM:
{
const OpProgram *op = ptr;
apply_program_op (program, op);
program = op->program;
break;
}
case OP_CHANGE_RENDER_TARGET:
apply_render_target_op (self, program, ptr);
break;
case OP_CLEAR:
glClearColor (0, 0, 0, 0);
glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
break;
case OP_CHANGE_VIEWPORT:
apply_viewport_op (program, ptr);
break;
case OP_CHANGE_OPACITY:
apply_opacity_op (program, ptr);
break;
case OP_CHANGE_COLOR_MATRIX:
apply_color_matrix_op (program, ptr);
break;
case OP_CHANGE_COLOR:
/*g_assert (program == &self->color_program || program == &self->coloring_program ||*/
/*program == &self->shadow_program);*/
apply_color_op (program, ptr);
break;
case OP_CHANGE_BORDER_COLOR:
apply_border_color_op (program, ptr);
break;
case OP_CHANGE_CLIP:
apply_clip_op (program, ptr);
break;
case OP_CHANGE_SOURCE_TEXTURE:
apply_source_texture_op (program, ptr);
break;
case OP_CHANGE_CROSS_FADE:
g_assert (program == &self->cross_fade_program);
apply_cross_fade_op (program, ptr);
break;
case OP_CHANGE_BLEND:
g_assert (program == &self->blend_program);
apply_blend_op (program, ptr);
break;
case OP_CHANGE_LINEAR_GRADIENT:
apply_linear_gradient_op (program, ptr);
break;
case OP_CHANGE_BLUR:
apply_blur_op (program, ptr);
break;
case OP_CHANGE_INSET_SHADOW:
apply_inset_shadow_op (program, ptr);
break;
case OP_CHANGE_OUTSET_SHADOW:
apply_outset_shadow_op (program, ptr);
break;
case OP_CHANGE_BORDER:
apply_border_op (program, ptr);
break;
case OP_CHANGE_BORDER_WIDTH:
apply_border_width_op (program, ptr);
break;
case OP_CHANGE_UNBLURRED_OUTSET_SHADOW:
apply_unblurred_outset_shadow_op (program, ptr);
break;
case OP_CHANGE_REPEAT:
apply_repeat_op (program, ptr);
break;
case OP_DRAW:
{
const OpDraw *op = ptr;
OP_PRINT (" -> draw %ld, size %ld and program %d\n",
op->vao_offset, op->vao_size, program->index);
glDrawArrays (GL_TRIANGLES, op->vao_offset, op->vao_size);
break;
}
case OP_DUMP_FRAMEBUFFER:
{
const OpDumpFrameBuffer *op = ptr;
dump_framebuffer (op->filename, op->width, op->height);
break;
}
case OP_PUSH_DEBUG_GROUP:
{
const OpDebugGroup *op = ptr;
gdk_gl_context_push_debug_group (self->gl_context, op->text);
OP_PRINT (" Debug: %s", op->text);
break;
}
case OP_POP_DEBUG_GROUP:
gdk_gl_context_pop_debug_group (self->gl_context);
break;
case OP_NONE:
case OP_LAST:
default:
g_warn_if_reached ();
}
OP_PRINT ("\n");
}
glDeleteVertexArrays (1, &vao_id);
glDeleteBuffers (1, &buffer_id);
}
static void
gsk_gl_renderer_do_render (GskRenderer *renderer,
GskRenderNode *root,
const graphene_rect_t *viewport,
int fbo_id,
int scale_factor)
{
GskGLRenderer *self = GSK_GL_RENDERER (renderer);
graphene_matrix_t projection;
#ifdef G_ENABLE_DEBUG
GskProfiler *profiler;
gint64 gpu_time, cpu_time, start_time;
#endif
GPtrArray *removed;
#ifdef G_ENABLE_DEBUG
profiler = gsk_renderer_get_profiler (renderer);
#endif
if (self->gl_context == NULL)
{
GSK_RENDERER_NOTE (renderer, OPENGL, g_message ("No valid GL context associated to the renderer"));
return;
}
g_assert (gsk_gl_driver_in_frame (self->gl_driver));
/* Set up the modelview and projection matrices to fit our viewport */
graphene_matrix_init_ortho (&projection,
viewport->origin.x,
viewport->origin.x + viewport->size.width,
viewport->origin.y,
viewport->origin.y + viewport->size.height,
ORTHO_NEAR_PLANE,
ORTHO_FAR_PLANE);
graphene_matrix_scale (&projection, 1, -1, 1);
removed = g_ptr_array_new ();
gsk_gl_texture_atlases_begin_frame (self->atlases, removed);
gsk_gl_glyph_cache_begin_frame (self->glyph_cache, self->gl_driver, removed);
gsk_gl_icon_cache_begin_frame (self->icon_cache, removed);
gsk_gl_shadow_cache_begin_frame (&self->shadow_cache, self->gl_driver);
g_ptr_array_unref (removed);
ops_set_projection (&self->op_builder, &projection);
ops_set_viewport (&self->op_builder, viewport);
ops_set_modelview (&self->op_builder, gsk_transform_scale (NULL, scale_factor, scale_factor));
/* Initial clip is self->render_region! */
if (self->render_region != NULL)
{
graphene_rect_t transformed_render_region;
cairo_rectangle_int_t render_extents;
cairo_region_get_extents (self->render_region, &render_extents);
ops_transform_bounds_modelview (&self->op_builder,
&GRAPHENE_RECT_INIT (render_extents.x,
render_extents.y,
render_extents.width,
render_extents.height),
&transformed_render_region);
ops_push_clip (&self->op_builder,
&GSK_ROUNDED_RECT_INIT (transformed_render_region.origin.x,
transformed_render_region.origin.y,
transformed_render_region.size.width,
transformed_render_region.size.height));
}
else
{
ops_push_clip (&self->op_builder,
&GSK_ROUNDED_RECT_INIT (viewport->origin.x,
viewport->origin.y,
viewport->size.width,
viewport->size.height));
}
if (fbo_id != 0)
ops_set_render_target (&self->op_builder, fbo_id);
gdk_gl_context_push_debug_group (self->gl_context, "Adding render ops");
gsk_gl_renderer_add_render_ops (self, root, &self->op_builder);
gdk_gl_context_pop_debug_group (self->gl_context);
/* We correctly reset the state everywhere */
g_assert_cmpint (self->op_builder.current_render_target, ==, fbo_id);
ops_pop_modelview (&self->op_builder);
ops_pop_clip (&self->op_builder);
ops_finish (&self->op_builder);
/*g_message ("Ops: %u", self->render_ops->len);*/
/* Now actually draw things... */
#ifdef G_ENABLE_DEBUG
gsk_gl_profiler_begin_gpu_region (self->gl_profiler);
gsk_profiler_timer_begin (profiler, self->profile_timers.cpu_time);
#endif
/* Actually do the rendering */
if (fbo_id != 0)
glBindFramebuffer (GL_FRAMEBUFFER, fbo_id);
glViewport (0, 0, ceilf (viewport->size.width), ceilf (viewport->size.height));
gsk_gl_renderer_setup_render_mode (self);
gsk_gl_renderer_clear (self);
glEnable (GL_DEPTH_TEST);
glDepthFunc (GL_LEQUAL);
/* Pre-multiplied alpha! */
glEnable (GL_BLEND);
glBlendFunc (GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
glBlendEquation (GL_FUNC_ADD);
gdk_gl_context_push_debug_group (self->gl_context, "Rendering ops");
gsk_gl_renderer_render_ops (self);
gdk_gl_context_pop_debug_group (self->gl_context);
#ifdef G_ENABLE_DEBUG
gsk_profiler_counter_inc (profiler, self->profile_counters.frames);
start_time = gsk_profiler_timer_get_start (profiler, self->profile_timers.cpu_time);
cpu_time = gsk_profiler_timer_end (profiler, self->profile_timers.cpu_time);
gsk_profiler_timer_set (profiler, self->profile_timers.cpu_time, cpu_time);
gpu_time = gsk_gl_profiler_end_gpu_region (self->gl_profiler);
gsk_profiler_timer_set (profiler, self->profile_timers.gpu_time, gpu_time);
gsk_profiler_push_samples (profiler);
if (gdk_profiler_is_running ())
gdk_profiler_add_mark (start_time, cpu_time, "render", "");
#endif
}
static GdkTexture *
gsk_gl_renderer_render_texture (GskRenderer *renderer,
GskRenderNode *root,
const graphene_rect_t *viewport)
{
GskGLRenderer *self = GSK_GL_RENDERER (renderer);
GdkTexture *texture;
int width, height;
guint texture_id;
guint fbo_id;
g_return_val_if_fail (self->gl_context != NULL, NULL);
gdk_gl_context_make_current (self->gl_context);
gdk_gl_context_push_debug_group_printf (self->gl_context,
"Render %s<%p> to texture", root->node_class->type_name, root);
width = ceilf (viewport->size.width);
height = ceilf (viewport->size.height);
self->scale_factor = gdk_surface_get_scale_factor (gsk_renderer_get_surface (renderer));
/* Prepare our framebuffer */
gsk_gl_driver_begin_frame (self->gl_driver);
glGenTextures (1, &texture_id);
glBindTexture (GL_TEXTURE_2D, texture_id);
gdk_gl_context_label_object_printf (self->gl_context, GL_TEXTURE, texture_id,
"Texture %s<%p> %d", root->node_class->type_name, root, texture_id);
if (gdk_gl_context_get_use_es (self->gl_context))
glTexImage2D (GL_TEXTURE_2D, 0, GL_RGBA8, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
else
glTexImage2D (GL_TEXTURE_2D, 0, GL_RGBA8, width, height, 0, GL_BGRA, GL_UNSIGNED_BYTE, NULL);
glGenFramebuffers (1, &fbo_id);
glBindFramebuffer (GL_FRAMEBUFFER, fbo_id);
gdk_gl_context_label_object_printf (self->gl_context, GL_FRAMEBUFFER, fbo_id,
"FB %s<%p> %d", root->node_class->type_name, root, fbo_id);
glFramebufferTexture2D (GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texture_id, 0);
g_assert_cmphex (glCheckFramebufferStatus (GL_FRAMEBUFFER), ==, GL_FRAMEBUFFER_COMPLETE);
/* Render the actual scene */
gsk_gl_renderer_do_render (renderer, root, viewport, fbo_id, 1);
texture = gdk_gl_texture_new (self->gl_context,
texture_id,
width, height,
NULL, NULL);
glDeleteFramebuffers (1, &fbo_id);
gsk_gl_driver_end_frame (self->gl_driver);
gdk_gl_context_pop_debug_group (self->gl_context);
gsk_gl_renderer_clear_tree (self);
return texture;
}
static void
gsk_gl_renderer_render (GskRenderer *renderer,
GskRenderNode *root,
const cairo_region_t *update_area)
{
GskGLRenderer *self = GSK_GL_RENDERER (renderer);
graphene_rect_t viewport;
const cairo_region_t *damage;
GdkRectangle whole_surface;
GdkSurface *surface;
if (self->gl_context == NULL)
return;
gdk_gl_context_make_current (self->gl_context);
gdk_gl_context_push_debug_group_printf (self->gl_context,
"Render root node %p", root);
surface = gsk_renderer_get_surface (renderer);
whole_surface = (GdkRectangle) {
0, 0,
gdk_surface_get_width (surface) * self->scale_factor,
gdk_surface_get_height (surface) * self->scale_factor
};
gdk_draw_context_begin_frame (GDK_DRAW_CONTEXT (self->gl_context),
update_area);
damage = gdk_draw_context_get_frame_region (GDK_DRAW_CONTEXT (self->gl_context));
if (cairo_region_contains_rectangle (damage, &whole_surface) == CAIRO_REGION_OVERLAP_IN)
{
self->render_region = NULL;
}
else
{
GdkRectangle extents;
cairo_region_get_extents (damage, &extents);
if (gdk_rectangle_equal (&extents, &whole_surface))
self->render_region = NULL;
else
self->render_region = cairo_region_create_rectangle (&extents);
}
self->scale_factor = gdk_surface_get_scale_factor (surface);
gdk_gl_context_make_current (self->gl_context);
viewport.origin.x = 0;
viewport.origin.y = 0;
viewport.size.width = gdk_surface_get_width (surface) * self->scale_factor;
viewport.size.height = gdk_surface_get_height (surface) * self->scale_factor;
gsk_gl_driver_begin_frame (self->gl_driver);
gsk_gl_renderer_do_render (renderer, root, &viewport, 0, self->scale_factor);
gsk_gl_driver_end_frame (self->gl_driver);
gsk_gl_renderer_clear_tree (self);
gdk_draw_context_end_frame (GDK_DRAW_CONTEXT (self->gl_context));
gdk_gl_context_make_current (self->gl_context);
gdk_gl_context_pop_debug_group (self->gl_context);
g_clear_pointer (&self->render_region, cairo_region_destroy);
}
static void
gsk_gl_renderer_class_init (GskGLRendererClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GskRendererClass *renderer_class = GSK_RENDERER_CLASS (klass);
gobject_class->dispose = gsk_gl_renderer_dispose;
renderer_class->realize = gsk_gl_renderer_realize;
renderer_class->unrealize = gsk_gl_renderer_unrealize;
renderer_class->render = gsk_gl_renderer_render;
renderer_class->render_texture = gsk_gl_renderer_render_texture;
}
static void
gsk_gl_renderer_init (GskGLRenderer *self)
{
gsk_ensure_resources ();
ops_init (&self->op_builder);
self->op_builder.renderer = self;
#ifdef G_ENABLE_DEBUG
{
GskProfiler *profiler = gsk_renderer_get_profiler (GSK_RENDERER (self));
self->profile_counters.frames = gsk_profiler_add_counter (profiler, "frames", "Frames", FALSE);
self->profile_timers.cpu_time = gsk_profiler_add_timer (profiler, "cpu-time", "CPU time", FALSE, TRUE);
self->profile_timers.gpu_time = gsk_profiler_add_timer (profiler, "gpu-time", "GPU time", FALSE, TRUE);
}
#endif
}
/**
* gsk_gl_renderer_new:
*
* Creates a new #GskRenderer using OpenGL. This is the default renderer
* used by GTK.
*
* Returns: a new GL renderer
**/
GskRenderer *
gsk_gl_renderer_new (void)
{
return g_object_new (GSK_TYPE_GL_RENDERER, NULL);
}
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