Lerking/gtk
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

gpu: Pass colors in srgb-linear

Browse Source 
GdkRGBA is defined to be in srgb. Since we want to do our
compositing in srgb-linear, convert the coors as we send
them to the shader.
This commit is contained in:
Matthias Clasen
2024-06-17 10:05:31 -04:00
parent f7ff943d08
commit dd79dd0a52
1 changed files with 15 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
gsk/gpu/gskgpushaderopprivate.h
View File

@@ -4,6 +4,8 @@
#include "gskgputypesprivate.h"
#include <math.h>
G_BEGIN_DECLS
struct _GskGpuShaderOp
@@ -63,13 +65,23 @@ GskGpuOp * gsk_gpu_shader_op_gl_command (GskGpuO
GskGpuFrame *frame,
GskGLCommandState *state);
static inline float
srgb_inverse_transfer_function (float v)
{
if (v >= 0.04045)
return powf (((v + 0.055)/(1 + 0.055)), 2.4);
else
return v / 12.92;
}
static inline void
gsk_gpu_rgba_to_float (const GdkRGBA *rgba,
float values[4])
{
values[0] = rgba->red;
values[1] = rgba->green;
values[2] = rgba->blue;
values[0] = srgb_inverse_transfer_function (rgba->red);
values[1] = srgb_inverse_transfer_function (rgba->green);
values[2] = srgb_inverse_transfer_function (rgba->blue);
values[3] = rgba->alpha;
}