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gpu: Remove the ubershader

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It didn't bring any noticable benefits and it isn't compatible with the
way we intend to do colorstate support.

And nobody seems to want to spend time on it, so let's get rid of it.

We can bring it back later if someone wants to work on it.
This commit is contained in:
Benjamin Otte 2024-07-04 07:59:43 +02:00
parent be8fef9811
commit 012c4b9425
12 changed files with 25 additions and 1832 deletions
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1060
gsk/gpu/gskgpunodeprocessor.c
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File diff suppressed because it is too large Load Diff

1
gsk/gpu/gskgpurenderer.c
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@ -24,7 +24,6 @@
#define GSK_GPU_MAX_FRAMES 4
static const GdkDebugKey gsk_gpu_optimization_keys[] = {
{ "uber", GSK_GPU_OPTIMIZE_UBER, "Don't use the uber shader" },
{ "clear", GSK_GPU_OPTIMIZE_CLEAR, "Use shaders instead of vkCmdClearAttachment()/glClear()" },
{ "merge", GSK_GPU_OPTIMIZE_MERGE, "Use one vkCmdDraw()/glDrawArrays() per operation" },
{ "blit", GSK_GPU_OPTIMIZE_BLIT, "Use shaders instead of vkCmdBlit()/glBlitFramebuffer()" },

11
gsk/gpu/gskgputypesprivate.h
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@ -113,11 +113,10 @@ G_STATIC_ASSERT (GSK_GPU_PATTERN_BLEND_SATURATION == GSK_GPU_PATTERN_BLEND_DEFAU
G_STATIC_ASSERT (GSK_GPU_PATTERN_BLEND_LUMINOSITY == GSK_GPU_PATTERN_BLEND_DEFAULT + GSK_BLEND_MODE_LUMINOSITY);
typedef enum {
GSK_GPU_OPTIMIZE_UBER = 1 << 0,
GSK_GPU_OPTIMIZE_CLEAR = 1 << 1,
GSK_GPU_OPTIMIZE_MERGE = 1 << 2,
GSK_GPU_OPTIMIZE_BLIT = 1 << 3,
GSK_GPU_OPTIMIZE_GRADIENTS = 1 << 4,
GSK_GPU_OPTIMIZE_MIPMAP = 1 << 5,
GSK_GPU_OPTIMIZE_CLEAR = 1 << 0,
GSK_GPU_OPTIMIZE_MERGE = 1 << 1,
GSK_GPU_OPTIMIZE_BLIT = 1 << 2,
GSK_GPU_OPTIMIZE_GRADIENTS = 1 << 3,
GSK_GPU_OPTIMIZE_MIPMAP = 1 << 4,
} GskGpuOptimizations;

69
gsk/gpu/gskgpuuberop.c
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@ -1,69 +0,0 @@
#include "config.h"
#include "gskgpuuberopprivate.h"
#include "gskgpuframeprivate.h"
#include "gskgpuprintprivate.h"
#include "gskgpushaderopprivate.h"
#include "gskrectprivate.h"
#include "gpu/shaders/gskgpuuberinstance.h"
typedef struct _GskGpuUberOp GskGpuUberOp;
struct _GskGpuUberOp
{
GskGpuShaderOp op;
};
static void
gsk_gpu_uber_op_print_instance (GskGpuShaderOp *shader,
gpointer instance_,
GString *string)
{
GskGpuUberInstance *instance = instance_;
gsk_gpu_print_rect (string, instance->rect);
}
static const GskGpuShaderOpClass GSK_GPU_UBER_OP_CLASS = {
{
GSK_GPU_OP_SIZE (GskGpuUberOp),
GSK_GPU_STAGE_SHADER,
gsk_gpu_shader_op_finish,
gsk_gpu_shader_op_print,
#ifdef GDK_RENDERING_VULKAN
gsk_gpu_shader_op_vk_command,
#endif
gsk_gpu_shader_op_gl_command
},
"gskgpuuber",
sizeof (GskGpuUberInstance),
#ifdef GDK_RENDERING_VULKAN
&gsk_gpu_uber_info,
#endif
gsk_gpu_uber_op_print_instance,
gsk_gpu_uber_setup_attrib_locations,
gsk_gpu_uber_setup_vao,
};
void
gsk_gpu_uber_op (GskGpuFrame *frame,
GskGpuShaderClip clip,
const graphene_rect_t *rect,
const graphene_point_t *offset,
GskGpuDescriptors *desc,
guint32 pattern_id)
{
GskGpuUberInstance *instance;
gsk_gpu_shader_op_alloc (frame,
&GSK_GPU_UBER_OP_CLASS,
0,
clip,
desc,
&instance);
gsk_gpu_rect_to_float (rect, offset, instance->rect);
instance->pattern_id = pattern_id;
}

18
gsk/gpu/gskgpuuberopprivate.h
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@ -1,18 +0,0 @@
#pragma once
#include "gskgpushaderopprivate.h"
#include <graphene.h>
G_BEGIN_DECLS
void gsk_gpu_uber_op (GskGpuFrame *frame,
GskGpuShaderClip clip,
const graphene_rect_t *rect,
const graphene_point_t *offset,
GskGpuDescriptors *desc,
guint32 pattern_id);
G_END_DECLS

6
gsk/gpu/gsknglrenderer.c
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@ -75,12 +75,6 @@ gsk_ngl_renderer_create_context (GskGpuRenderer *renderer,
*supported = -1;
/* Shader compilation takes too long when texture() and get_float() calls
* use if/else ladders to avoid non-uniform indexing.
* And that is always true with GL.
*/
*supported &= ~GSK_GPU_OPTIMIZE_UBER;
return GDK_DRAW_CONTEXT (context);
}

9
gsk/gpu/gskvulkanrenderer.c
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@ -102,15 +102,6 @@ gsk_vulkan_renderer_create_context (GskGpuRenderer *renderer,
*supported = -1;
/* Shader compilation takes too long when texture() and get_float() calls
* use if/else ladders to avoid non-uniform indexing.
* This is true when we use the Vulkan 1.0 shaders, but works with the Vulkan 1.2
* shaders.
*/
if (!gdk_display_has_vulkan_feature (display, GDK_VULKAN_FEATURE_DYNAMIC_INDEXING) ||
!gdk_display_has_vulkan_feature (display, GDK_VULKAN_FEATURE_NONUNIFORM_INDEXING))
*supported &= ~GSK_GPU_OPTIMIZE_UBER;
return GDK_DRAW_CONTEXT (context);
}

147
gsk/gpu/shaders/gradient.glsl
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@ -1,147 +0,0 @@
#ifndef _GRADIENT_
#define _GRADIENT_
#ifdef GSK_FRAGMENT_SHADER
#include "common.glsl"
struct Gradient
{
int n_stops;
uint offset;
};
float
gradient_read_offset (Gradient self,
int i)
{
return gsk_get_float (self.offset + uint(i) * 5u);
}
vec4
gradient_read_color (Gradient self,
int i)
{
uint u = uint (clamp (i, 0, self.n_stops - 1));
return vec4 (gsk_get_float (self.offset + u * 5u + 1u),
gsk_get_float (self.offset + u * 5u + 2u),
gsk_get_float (self.offset + u * 5u + 3u),
gsk_get_float (self.offset + u * 5u + 4u));
}
vec4
gradient_get_color_for_range_unscaled (Gradient self,
float start,
float end)
{
vec4 result = vec4 (0.0);
float offset;
int i;
for (i = 0; i < self.n_stops; i++)
{
offset = gradient_read_offset (self, i);
if (offset >= start)
break;
}
if (i == self.n_stops)
offset = 1.0;
float last_offset = i > 0 ? gradient_read_offset (self, i - 1) : 0.0;
vec4 last_color = gradient_read_color (self, i - 1);
vec4 color = gradient_read_color (self, i);
if (last_offset < start)
{
last_color = mix (last_color, color, (start - last_offset) / (offset - last_offset));
last_offset = start;
}
if (end <= start)
return last_color;
for (; i < self.n_stops; i++)
{
offset = gradient_read_offset (self, i);
color = gradient_read_color (self, i);
if (offset >= end)
break;
result += 0.5 * (color + last_color) * (offset - last_offset);
last_offset = offset;
last_color = color;
}
if (i == self.n_stops)
{
offset = 1.0;
color = gradient_read_color (self, i);
}
if (offset > end)
{
color = mix (last_color, color, (end - last_offset) / (offset - last_offset));
offset = end;
}
result += 0.5 * (color + last_color) * (offset - last_offset);
return result;
}
vec4
gradient_get_color_repeating (Gradient self,
float start,
float end)
{
vec4 c;
if (floor (end) > floor (start))
{
float fract_end = fract(end);
float fract_start = fract(start);
float n = floor (end) - floor (start);
if (fract_end > fract_start + 0.01)
c = gradient_get_color_for_range_unscaled (self, fract_start, fract_end);
else if (fract_start > fract_end + 0.01)
c = - gradient_get_color_for_range_unscaled (self, fract_end, fract_start);
c += gradient_get_color_for_range_unscaled (self, 0.0, 1.0) * n;
}
else
{
start = fract (start);
end = fract (end);
c = gradient_get_color_for_range_unscaled (self, start, end);
}
c /= end - start;
return color_premultiply (c);
}
vec4
gradient_get_color (Gradient self,
float start,
float end)
{
vec4 c;
start = clamp (start, 0.0, 1.0);
end = clamp (end, 0.0, 1.0);
c = gradient_get_color_for_range_unscaled (self, start, end);
if (end > start)
c /= end - start;
return color_premultiply (c);
}
uint
gradient_get_size (Gradient self)
{
return uint (self.n_stops) * 5u + 1u;
}
Gradient
gradient_new (uint offset)
{
Gradient self = Gradient (gsk_get_int (offset),
offset + 1u);
return self;
}
#endif /* GSK_FRAGMENT_SHADER */
#endif /* __GRADIENT__ */

41
gsk/gpu/shaders/gskgpuuber.glsl
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@ -1,41 +0,0 @@
#include "common.glsl"
#include "pattern.glsl"
PASS(0) vec2 _pos;
PASS_FLAT(1) Rect _rect;
PASS_FLAT(2) uint _pattern_id;
#ifdef GSK_VERTEX_SHADER
IN(0) vec4 in_rect;
IN(1) uint in_pattern_id;
void
run (out vec2 pos)
{
Rect r = rect_from_gsk (in_rect);
pos = rect_get_position (r);
_pos = pos;
_rect = r;
_pattern_id = in_pattern_id;
}
#endif
#ifdef GSK_FRAGMENT_SHADER
void
run (out vec4 color,
out vec2 position)
{
color = pattern (_pattern_id, _pos);
color.a *= rect_coverage (_rect, _pos);
position = _pos;
}
#endif

3
gsk/gpu/shaders/meson.build
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@ -6,8 +6,6 @@ gsk_private_gpu_include_shaders = files([
'common-vulkan.glsl',
'ellipse.glsl',
'enums.glsl',
'gradient.glsl',
'pattern.glsl',
'rect.glsl',
'roundedrect.glsl',
])
@ -28,7 +26,6 @@ gsk_private_gpu_shaders = files([
'gskgpuroundedcolor.glsl',
'gskgpustraightalpha.glsl',
'gskgputexture.glsl',
'gskgpuuber.glsl',
])
gsk_private_gpu_shader_headers = []

459
gsk/gpu/shaders/pattern.glsl
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@ -1,459 +0,0 @@
#ifndef _PATTERN_
#define _PATTERN_
#include "common.glsl"
#include "blendmode.glsl"
#include "gradient.glsl"
#include "rect.glsl"
#ifdef GSK_FRAGMENT_SHADER
vec4 stack[GSK_GPU_PATTERN_STACK_SIZE];
uint stack_size = 0u;
void
stack_push (vec4 data)
{
stack[stack_size] = data;
stack_size++;
}
vec4
stack_pop (void)
{
stack_size--;
return stack[stack_size];
}
struct Position
{
/* pos.xy is the actual position
pos.zw is the fwidth() of it
*/
vec4 pos;
};
vec2
position (Position pos)
{
return pos.pos.xy;
}
vec2
position_fwidth (Position pos)
{
return pos.pos.zw;
}
Position
position_new (vec2 pos)
{
return Position (vec4 (pos, fwidth (pos)));
}
uint
read_uint (inout uint reader)
{
uint result = gsk_get_uint (reader);
reader++;
return result;
}
float
read_float (inout uint reader)
{
float result = gsk_get_float (reader);
reader++;
return result;
}
vec2
read_vec2 (inout uint reader)
{
return vec2 (read_float (reader), read_float (reader));
}
vec4
read_vec4 (inout uint reader)
{
return vec4 (read_float (reader), read_float (reader), read_float (reader), read_float (reader));
}
Rect
read_rect (inout uint reader)
{
return rect_new_size (read_vec4 (reader));
}
mat4
read_mat4 (inout uint reader)
{
mat4 result = mat4 (gsk_get_float (reader + 0u), gsk_get_float (reader + 1u),
gsk_get_float (reader + 2u), gsk_get_float (reader + 3u),
gsk_get_float (reader + 4u), gsk_get_float (reader + 5u),
gsk_get_float (reader + 6u), gsk_get_float (reader + 7u),
gsk_get_float (reader + 8u), gsk_get_float (reader + 9u),
gsk_get_float (reader + 10u), gsk_get_float (reader + 11u),
gsk_get_float (reader + 12u), gsk_get_float (reader + 13u),
gsk_get_float (reader + 14u), gsk_get_float (reader + 15u));
reader += 16u;
return result;
}
Gradient
read_gradient (inout uint reader)
{
Gradient gradient = gradient_new (reader);
reader += gradient_get_size (gradient);
return gradient;
}
void
clip_pattern (inout uint reader,
inout vec4 color,
Position pos)
{
Rect clip = read_rect (reader);
float alpha = rect_coverage (clip, position (pos), abs (position_fwidth (pos)));
color *= alpha;
}
void
opacity_pattern (inout uint reader,
inout vec4 color)
{
float opacity = read_float (reader);
color *= opacity;
}
void
color_matrix_pattern (inout uint reader,
inout vec4 color)
{
mat4 matrix = read_mat4 (reader);
vec4 offset = read_vec4 (reader);
color = color_unpremultiply (color);
color = matrix * color + offset;
color = clamp(color, 0.0, 1.0);
color = color_premultiply (color);
}
void
repeat_push_pattern (inout uint reader,
inout Position pos)
{
stack_push (pos.pos);
Rect bounds = read_rect (reader);
vec2 size = rect_size (bounds);
pos.pos.xy = mod (pos.pos.xy - bounds.bounds.xy, size);
/* make sure we have a positive result */
pos.pos.xy = mix (pos.pos.xy, pos.pos.xy + size, lessThan (pos.pos.xy, vec2 (0.0)));
pos.pos.xy += bounds.bounds.xy;
}
void
affine_pattern (inout uint reader,
inout Position pos)
{
stack_push (pos.pos);
vec4 transform = read_vec4 (reader);
pos.pos.zw *= transform.zw;
pos.pos.xy -= transform.xy;
pos.pos.xy *= transform.zw;
}
void
position_pop_pattern (inout uint reader,
inout Position pos)
{
pos = Position (stack_pop ());
}
void
cross_fade_pattern (inout uint reader,
inout vec4 color)
{
vec4 start = stack_pop ();
float progress = read_float (reader);
color = mix (start, color, progress);
}
void
mask_alpha_pattern (inout uint reader,
inout vec4 color)
{
vec4 source = stack_pop ();
color = source * color.a;
}
void
mask_inverted_alpha_pattern (inout uint reader,
inout vec4 color)
{
vec4 source = stack_pop ();
color = source * (1.0 - color.a);
}
void
mask_luminance_pattern (inout uint reader,
inout vec4 color)
{
vec4 source = stack_pop ();
color = source * luminance (color.rgb);
}
void
mask_inverted_luminance_pattern (inout uint reader,
inout vec4 color)
{
vec4 source = stack_pop ();
color = source * (color.a - luminance (color.rgb));
}
void
blend_mode_pattern (inout vec4 color,
uint mode)
{
vec4 bottom = stack_pop ();
color = blend_mode (bottom, color, mode);
}
vec4
glyphs_pattern (inout uint reader,
Position pos)
{
float opacity = 0.0;
vec4 color = color_premultiply (read_vec4 (reader));
uint num_glyphs = read_uint (reader);
uint i;
vec2 p = position (pos);
vec2 dFdp = abs (position_fwidth (pos));
for (i = 0u; i < num_glyphs; i++)
{
uint tex_id = read_uint (reader);
Rect glyph_bounds = read_rect (reader);
vec4 tex_rect = read_vec4 (reader);
float coverage = rect_coverage (glyph_bounds, p, dFdp);
if (coverage > 0.0)
opacity += coverage * gsk_texture (tex_id, (p - tex_rect.xy) / tex_rect.zw).a;
}
return color * opacity;
}
vec4
texture_pattern (inout uint reader,
Position pos)
{
uint tex_id = read_uint (reader);
vec4 tex_rect = read_vec4 (reader);
return gsk_texture (tex_id, (position (pos) - tex_rect.xy) / tex_rect.zw);
}
vec4
straight_alpha_pattern (inout uint reader,
Position pos)
{
uint tex_id = read_uint (reader);
vec4 tex_rect = read_vec4 (reader);
return gsk_texture_straight_alpha (tex_id, (position (pos) - tex_rect.xy) / tex_rect.zw);
}
vec4
linear_gradient_pattern (inout uint reader,
Position pos,
bool repeating)
{
vec2 start = read_vec2 (reader);
vec2 end = read_vec2 (reader);
Gradient gradient = read_gradient (reader);
vec2 line = end - start;
float line_length = dot (line, line);
float offset = dot (position (pos) - start, line) / line_length;
float other_offset = dot (position (pos) + position_fwidth (pos) - start, line) / line_length;
float d_offset = 0.5 * abs (offset - other_offset);
if (repeating)
return gradient_get_color_repeating (gradient, offset - d_offset, offset + d_offset);
else
return gradient_get_color (gradient, offset - d_offset, offset + d_offset);
}
vec4
radial_gradient_pattern (inout uint reader,
Position pos,
bool repeating)
{
vec2 center = read_vec2 (reader);
vec2 radius = read_vec2 (reader);
float start = read_float (reader);
float end = read_float (reader);
Gradient gradient = read_gradient (reader);
float offset = length ((position (pos) - center) / radius);
float other_offset = length ((position (pos) + position_fwidth (pos) - center) / radius);
offset = (offset - start) / (end - start);
other_offset = (other_offset - start) / (end - start);
float d_offset = abs (0.5 * (offset - other_offset));
if (repeating)
return gradient_get_color_repeating (gradient, offset - d_offset, offset + d_offset);
else
return gradient_get_color (gradient, offset - d_offset, offset + d_offset);
}
vec4
conic_gradient_pattern (inout uint reader,
Position pos)
{
vec2 center = read_vec2 (reader);
float angle = read_float (reader);
Gradient gradient = read_gradient (reader);
/* scaling modifies angles, so be sure to use right coordinate system */
vec2 dpos = position (pos) - center;
vec2 dpos2 = (position (pos) + position_fwidth (pos)) - center;
float offset = atan (dpos.y, dpos.x);
float offset2 = atan (dpos2.y, dpos2.x);
offset = degrees (offset + angle) / 360.0;
offset2 = degrees (offset2 + angle) / 360.0;
float overflow = fract (offset + 0.5);
float overflow2 = fract (offset2 + 0.5);
offset = fract (offset);
offset2 = fract (offset2);
float d_offset = max (0.00001, 0.5 * min (abs (offset - offset2), abs (overflow - overflow2)));
return gradient_get_color_repeating (gradient, offset - d_offset, offset + d_offset);
}
vec4
color_pattern (inout uint reader)
{
vec4 color = read_vec4 (reader);
return color_premultiply (color);
}
vec4
pattern (uint reader,
vec2 pos_)
{
vec4 color = vec4 (1.0, 0.0, 0.8, 1.0); /* pink */
Position pos = position_new (pos_ / GSK_GLOBAL_SCALE);
for(;;)
{
uint type = read_uint (reader);
switch (type)
{
default:
case GSK_GPU_PATTERN_DONE:
return color;
case GSK_GPU_PATTERN_COLOR:
color = color_pattern (reader);
break;
case GSK_GPU_PATTERN_TEXTURE:
color = texture_pattern (reader, pos);
break;
case GSK_GPU_PATTERN_STRAIGHT_ALPHA:
color = straight_alpha_pattern (reader, pos);
break;
case GSK_GPU_PATTERN_GLYPHS:
color = glyphs_pattern (reader, pos);
break;
case GSK_GPU_PATTERN_COLOR_MATRIX:
color_matrix_pattern (reader, color);
break;
case GSK_GPU_PATTERN_OPACITY:
opacity_pattern (reader, color);
break;
case GSK_GPU_PATTERN_LINEAR_GRADIENT:
color = linear_gradient_pattern (reader, pos, false);
break;
case GSK_GPU_PATTERN_REPEATING_LINEAR_GRADIENT:
color = linear_gradient_pattern (reader, pos, true);
break;
case GSK_GPU_PATTERN_RADIAL_GRADIENT:
color = radial_gradient_pattern (reader, pos, false);
break;
case GSK_GPU_PATTERN_REPEATING_RADIAL_GRADIENT:
color = radial_gradient_pattern (reader, pos, true);
break;
case GSK_GPU_PATTERN_CONIC_GRADIENT:
color = conic_gradient_pattern (reader, pos);
break;
case GSK_GPU_PATTERN_CLIP:
clip_pattern (reader, color, pos);
break;
case GSK_GPU_PATTERN_REPEAT_PUSH:
repeat_push_pattern (reader, pos);
break;
case GSK_GPU_PATTERN_POSITION_POP:
position_pop_pattern (reader, pos);
break;
case GSK_GPU_PATTERN_PUSH_COLOR:
stack_push (color);
color = vec4 (0.0);
break;
case GSK_GPU_PATTERN_POP_CROSS_FADE:
cross_fade_pattern (reader, color);
break;
case GSK_GPU_PATTERN_POP_MASK_ALPHA:
mask_alpha_pattern (reader, color);
break;
case GSK_GPU_PATTERN_POP_MASK_INVERTED_ALPHA:
mask_inverted_alpha_pattern (reader, color);
break;
case GSK_GPU_PATTERN_POP_MASK_LUMINANCE:
mask_luminance_pattern (reader, color);
break;
case GSK_GPU_PATTERN_POP_MASK_INVERTED_LUMINANCE:
mask_inverted_luminance_pattern (reader, color);
break;
case GSK_GPU_PATTERN_AFFINE:
affine_pattern (reader, pos);
break;
case GSK_GPU_PATTERN_BLEND_DEFAULT:
case GSK_GPU_PATTERN_BLEND_MULTIPLY:
case GSK_GPU_PATTERN_BLEND_SCREEN:
case GSK_GPU_PATTERN_BLEND_OVERLAY:
case GSK_GPU_PATTERN_BLEND_DARKEN:
case GSK_GPU_PATTERN_BLEND_LIGHTEN:
case GSK_GPU_PATTERN_BLEND_COLOR_DODGE:
case GSK_GPU_PATTERN_BLEND_COLOR_BURN:
case GSK_GPU_PATTERN_BLEND_HARD_LIGHT:
case GSK_GPU_PATTERN_BLEND_SOFT_LIGHT:
case GSK_GPU_PATTERN_BLEND_DIFFERENCE:
case GSK_GPU_PATTERN_BLEND_EXCLUSION:
case GSK_GPU_PATTERN_BLEND_COLOR:
case GSK_GPU_PATTERN_BLEND_HUE:
case GSK_GPU_PATTERN_BLEND_SATURATION:
case GSK_GPU_PATTERN_BLEND_LUMINOSITY:
blend_mode_pattern (color, type - GSK_GPU_PATTERN_BLEND_DEFAULT);
break;
}
}
}
#endif
#endif

1
gsk/meson.build
View File

@ -109,7 +109,6 @@ gsk_private_sources = files([
'gpu/gskgpuscissorop.c',
'gpu/gskgpustraightalphaop.c',
'gpu/gskgputextureop.c',
'gpu/gskgpuuberop.c',
'gpu/gskgpuuploadop.c',
])