diff options
Diffstat (limited to 'source/blender/draw/engines/workbench/shaders/workbench_forward_transparent_accum_frag.glsl')
-rw-r--r-- | source/blender/draw/engines/workbench/shaders/workbench_forward_transparent_accum_frag.glsl | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/source/blender/draw/engines/workbench/shaders/workbench_forward_transparent_accum_frag.glsl b/source/blender/draw/engines/workbench/shaders/workbench_forward_transparent_accum_frag.glsl index f1eacd281b1..53903a4af76 100644 --- a/source/blender/draw/engines/workbench/shaders/workbench_forward_transparent_accum_frag.glsl +++ b/source/blender/draw/engines/workbench/shaders/workbench_forward_transparent_accum_frag.glsl @@ -26,7 +26,7 @@ layout(std140) uniform material_block { }; layout(location=0) out vec4 transparentAccum; - +layout(location=1) out float revealageAccum; /* revealage actually stored in transparentAccum.a */ void main() { @@ -70,7 +70,13 @@ void main() vec3 shaded_color = diffuse_light * diffuse_color.rgb + specular_color; - vec4 premultiplied = vec4(shaded_color.rgb * alpha, alpha); - transparentAccum = calculate_transparent_accum(premultiplied); + /* Based on : + * McGuire and Bavoil, Weighted Blended Order-Independent Transparency, Journal of + * Computer Graphics Techniques (JCGT), vol. 2, no. 2, 122–141, 2013 + */ + /* Listing 4 */ + float weight = calculate_transparent_weight(alpha); + transparentAccum = vec4(shaded_color * weight, alpha); + revealageAccum = weight; } |