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author | Colin Basnett <cmbasnett@gmail.com> | 2022-09-17 03:50:37 +0300 |
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committer | Colin Basnett <cmbasnett@gmail.com> | 2022-09-17 03:50:37 +0300 |
commit | 564bda241a973396da51d7c3ccd9efd97d51728a (patch) | |
tree | 4d9aa4cccd82e2e606b47774afa5e1015bf14768 /source/blender/draw/engines/eevee_next/shaders/eevee_colorspace_lib.glsl | |
parent | 0fff238150d076576053c25b646f653d6e3b0edb (diff) | |
parent | 48d7ff68f0df209c77bbb081ab46fbc109fd825a (diff) |
Merge branch 'master' into feature-imformatfeature-imformat
Diffstat (limited to 'source/blender/draw/engines/eevee_next/shaders/eevee_colorspace_lib.glsl')
-rw-r--r-- | source/blender/draw/engines/eevee_next/shaders/eevee_colorspace_lib.glsl | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/source/blender/draw/engines/eevee_next/shaders/eevee_colorspace_lib.glsl b/source/blender/draw/engines/eevee_next/shaders/eevee_colorspace_lib.glsl new file mode 100644 index 00000000000..d5fdaae6fc1 --- /dev/null +++ b/source/blender/draw/engines/eevee_next/shaders/eevee_colorspace_lib.glsl @@ -0,0 +1,37 @@ + +/* -------------------------------------------------------------------- */ +/** \name YCoCg + * \{ */ + +vec3 colorspace_YCoCg_from_scene_linear(vec3 rgb_color) +{ + const mat3 colorspace_tx = transpose(mat3(vec3(1, 2, 1), /* Y */ + vec3(2, 0, -2), /* Co */ + vec3(-1, 2, -1))); /* Cg */ + return colorspace_tx * rgb_color; +} + +vec4 colorspace_YCoCg_from_scene_linear(vec4 rgba_color) +{ + return vec4(colorspace_YCoCg_from_scene_linear(rgba_color.rgb), rgba_color.a); +} + +vec3 colorspace_scene_linear_from_YCoCg(vec3 ycocg_color) +{ + float Y = ycocg_color.x; + float Co = ycocg_color.y; + float Cg = ycocg_color.z; + + vec3 rgb_color; + rgb_color.r = Y + Co - Cg; + rgb_color.g = Y + Cg; + rgb_color.b = Y - Co - Cg; + return rgb_color * 0.25; +} + +vec4 colorspace_scene_linear_from_YCoCg(vec4 ycocg_color) +{ + return vec4(colorspace_scene_linear_from_YCoCg(ycocg_color.rgb), ycocg_color.a); +} + +/** \} */ |