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Fix #139565: PyGPU: Add builtin point shaders

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This PR adds builtin shaders for drawing points. Using `FLAT_COLOR`,
`SMOOTH_COLOR`, `UNIFORM_COLOR` can lead to undesired behavior
on Metal and Vulkan backends. To ensure future compatibility this PR
adds `POINT_FLAT_COLOR` and `POINT_UNIFORM_COLOR`.

The point size can be set using `gpu.state.point_size_set`.

Pull Request: https://projects.blender.org/blender/blender/pulls/139583
This commit is contained in:
Jeroen Bakker
2025-05-29 14:36:32 +02:00
parent fd58d730b0
commit c56a855b9f
9 changed files with 119 additions and 2 deletions
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10
source/blender/python/gpu/gpu_py_shader.cc
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@@ -59,7 +59,13 @@
" :Uniforms: vec2 viewportSize, float lineWidth\n" \
"``POLYLINE_UNIFORM_COLOR``\n" \
" :Attributes: vec3 pos\n" \
" :Uniforms: vec2 viewportSize, float lineWidth\n"
" :Uniforms: vec2 viewportSize, float lineWidth\n" \
"``POINT_FLAT_COLOR``\n" \
" :Attributes: vec3 pos, vec4 color\n" \
" :Uniforms: float size\n" \
"``POLYLINE_UNIFORM_COLOR``\n" \
" :Attributes: vec3 pos\n" \
" :Uniforms: vec4 color, float size\n"
static const PyC_StringEnumItems pygpu_shader_builtin_items[] = {
{GPU_SHADER_3D_FLAT_COLOR, "FLAT_COLOR"},
@@ -70,6 +76,8 @@ static const PyC_StringEnumItems pygpu_shader_builtin_items[] = {
{GPU_SHADER_3D_POLYLINE_FLAT_COLOR, "POLYLINE_FLAT_COLOR"},
{GPU_SHADER_3D_POLYLINE_SMOOTH_COLOR, "POLYLINE_SMOOTH_COLOR"},
{GPU_SHADER_3D_POLYLINE_UNIFORM_COLOR, "POLYLINE_UNIFORM_COLOR"},
{GPU_SHADER_3D_POINT_FLAT_COLOR, "POINT_FLAT_COLOR"},
{GPU_SHADER_3D_POINT_UNIFORM_COLOR, "POINT_UNIFORM_COLOR"},
{0, nullptr},
};