diff options
Diffstat (limited to 'source/blender/draw/engines/gpencil/shaders/gpencil_frag.glsl')
| -rw-r--r-- | source/blender/draw/engines/gpencil/shaders/gpencil_frag.glsl | 21 |
1 files changed, 14 insertions, 7 deletions
diff --git a/source/blender/draw/engines/gpencil/shaders/gpencil_frag.glsl b/source/blender/draw/engines/gpencil/shaders/gpencil_frag.glsl index d81c6f4fe0b..8cf457ee4dd 100644 --- a/source/blender/draw/engines/gpencil/shaders/gpencil_frag.glsl +++ b/source/blender/draw/engines/gpencil/shaders/gpencil_frag.glsl @@ -89,14 +89,21 @@ void main() fragColor *= stroke_round_cap_mask( strokePt1, strokePt2, strokeAspect, strokeThickness, strokeHardeness); - /* For compatibility with colored alpha buffer. - * Note that we are limited to mono-chromatic alpha blending here - * because of the blend equation and the limit of 1 color target - * when using custom color blending. */ - revealColor = vec4(0.0, 0.0, 0.0, fragColor.a); + /* Holdout materials. */ + if (GP_FLAG_TEST(matFlag, GP_STROKE_HOLDOUT | GP_FILL_HOLDOUT)) { + revealColor = fragColor.aaaa; + } + else { + /* NOT holdout materials. + * For compatibility with colored alpha buffer. + * Note that we are limited to mono-chromatic alpha blending here + * because of the blend equation and the limit of 1 color target + * when using custom color blending. */ + revealColor = vec4(0.0, 0.0, 0.0, fragColor.a); - if (fragColor.a < 0.001) { - discard; + if (fragColor.a < 0.001) { + discard; + } } vec2 fb_size = max(vec2(textureSize(gpSceneDepthTexture, 0).xy), |