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shader: dual-source blending (Vulkan)

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nmzik
2026-09-17 23:16:51 +04:00
parent cbedf5707f
commit 6493674726
5 changed files with 30 additions and 2 deletions
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src/graphics/host_gpu/renderer/pipeline/pipelineCache.cpp
+15
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@@ -593,6 +593,21 @@ PipelineCache::GraphicsPrograms PipelineCache::GetGraphicsPrograms(
ShaderParams pixel_params;
if (pixel_active) {
pixel_params = PrepareProgram(pixel_regs, sh, target_export_mapping, pixel_info);
const auto& blend = context.GetBlendControl(0);
const auto is_dual_source = [](uint8_t factor) {
return factor >= static_cast<uint8_t>(Prospero::BlendFactor::kSrc1Color) &&
factor <= static_cast<uint8_t>(Prospero::BlendFactor::kOneMinusSrc1Alpha);
};
pixel_info.dual_source_blending =
blend.enable && !context.GetRenderTarget(0).info.blend_bypass &&
(is_dual_source(blend.color_srcblend) || is_dual_source(blend.color_destblend) ||
(blend.separate_alpha_blend &&
(is_dual_source(blend.alpha_srcblend) || is_dual_source(blend.alpha_destblend))));
if (pixel_info.dual_source_blending) {
// MRT1 supplies a second blend source for the same render target as MRT0.
pixel_info.target_output_mode[1] = pixel_info.target_output_mode[0];
pixel_info.target_export_mapping[1] = pixel_info.target_export_mapping[0];
}
}
if (context.GetClipControl().clip_disable) {
const auto& viewport = context.GetScreenViewport().viewports[0];