Workbench Simplification Refactor

This patch is (almost) a complete rewrite of workbench engine.
The features remain unchanged but the code quality is greatly improved.
Hair shading is brighter but also more correct.

This also introduce the concept of `DRWShaderLibrary` to make a simple
include system inside the GLSL files.

Differential Revision: https://developer.blender.org/D7060

1 files changed, 4 insertions, 7 deletions

diff --git a/source/blender/draw/engines/workbench/shaders/workbench_effect_taa_frag.glsl b/source/blender/draw/engines/workbench/shaders/workbench_effect_taa_frag.glsl
index 5795268f794..b877c2c3f76 100644
--- a/source/blender/draw/engines/workbench/shaders/workbench_effect_taa_frag.glsl
+++ b/source/blender/draw/engines/workbench/shaders/workbench_effect_taa_frag.glsl
@@ -1,14 +1,11 @@
-uniform sampler2D historyBuffer;
+
 uniform sampler2D colorBuffer;
 
-out vec4 colorOutput;
+in vec4 uvcoordsvar;
 
-uniform float mixFactor;
+out vec4 fragColor;
 
 void main()
 {
-  ivec2 texel = ivec2(gl_FragCoord.xy);
-  vec4 color_buffer = texelFetch(colorBuffer, texel, 0);
-  vec4 history_buffer = texelFetch(historyBuffer, texel, 0);
-  colorOutput = mix(history_buffer, color_buffer, mixFactor);
+  fragColor = texture(colorBuffer, uvcoordsvar.st);
 }