Commit: 248299fc95a6d774c98b523ae9ba2863638660b8
Author: Jeroen Bakker
Date: Tue Dec 6 10:08:59 2022 +0100
Branches: temp-vulkan-shader
https://developer.blender.org/rB248299fc95a6d774c98b523ae9ba2863638660b8
Nicer comments describing the issue.
===================================================================
M
source/blender/draw/engines/overlay/shaders/overlay_edit_gpencil_guide_vert.glsl
M source/blender/draw/intern/shaders/common_gpencil_lib.glsl
===================================================================
diff --git
a/source/blender/draw/engines/overlay/shaders/overlay_edit_gpencil_guide_vert.glsl
b/source/blender/draw/engines/overlay/shaders/overlay_edit_gpencil_guide_vert.glsl
index a7dbc3c9f7c..263a60e3968 100644
---
a/source/blender/draw/engines/overlay/shaders/overlay_edit_gpencil_guide_vert.glsl
+++
b/source/blender/draw/engines/overlay/shaders/overlay_edit_gpencil_guide_vert.glsl
@@ -6,7 +6,7 @@ void main()
{
GPU_INTEL_VERTEX_SHADER_WORKAROUND
- /* Spir-V GLSL pre-processors chokes when passed directly. */
+ /* Use local variable to workaround macro unrolling issue in shaderc. */
vec3 pos = pPosition;
gl_Position = point_world_to_ndc(pos);
finalColor = pColor;
diff --git a/source/blender/draw/intern/shaders/common_gpencil_lib.glsl
b/source/blender/draw/intern/shaders/common_gpencil_lib.glsl
index 25d8394ad9f..06b57f34190 100644
--- a/source/blender/draw/intern/shaders/common_gpencil_lib.glsl
+++ b/source/blender/draw/intern/shaders/common_gpencil_lib.glsl
@@ -253,7 +253,8 @@ vec4 gpencil_vertex(vec4 viewport_size,
x_axis = vec2(1.0, 0.0);
}
else { /* GP_STROKE_ALIGNMENT_OBJECT */
- /* Spir-V GLSL pre-processors chokes when passed directly. */
+
+ /* Use local variable to workaround macro unrolling issue in shaderc.
*/
vec3 wpos = wpos1 + ModelMatrix[0].xyz;
vec4 ndc_x = point_world_to_ndc(wpos);
vec2 ss_x = gpencil_project_to_screenspace(ndc_x, viewport_size);
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