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gpu: drop attachments whose sample count differs from the raster when a draw mixes MSAA and single-sample targets

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This commit is contained in:
nmzik
2026-10-21 17:39:16 +02:00
parent 4644c52927
commit 7b7294aa03
1 changed files with 23 additions and 0 deletions
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src/graphics/host_gpu/renderer/renderDraw.cpp
+23
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@@ -935,6 +935,29 @@ bool RenderExecutor::PrepareDrawRenderState(CommandBuffer& buffer, const DrawCal
LogDrawPhase(draw.Name(), "ResolveRenderDepthTarget");
}
ResolveRenderDepthTarget(buffer, state.depth_info);
// TODO(PPSA09243): Vulkan passes take one sample count. Where PS5 attachments mix counts,
// keep those matching the raster count instead of resolving multisampled shadows.
const auto colors = std::span {state.color_info, state.color_count};
const auto pass_samples = state.depth_info.image_id ? state.depth_info.desc.info.samples
: state.color_info[0].desc.info.samples;
if (std::ranges::any_of(colors, [&](const RenderColorInfo& color) {
return color.desc.info.samples != pass_samples;
})) {
const auto raster =
render_sample_count(buffer.GetRegisters().GetAaConfig().msaa_num_samples);
const auto dropped = std::ranges::remove_if(colors, [&](const RenderColorInfo& color) {
return color.desc.info.samples != raster;
});
state.color_count -= static_cast<uint32_t>(dropped.size());
if (state.depth_info.image_id && state.depth_info.desc.info.samples != raster) {
state.depth_info = {};
}
static std::atomic_bool logged = false;
if (!logged.exchange(true, std::memory_order_relaxed)) {
Log::WriteToConsoleAndLog(
"Warning: dropping attachments whose sample count differs from the raster.\n");
}
}
if (state.color_count == 0 && !state.depth_info.image_id && !state.ps_active) {
LogFramebufferSkip(draw.Name(), state.color_info[0], state.depth_info, buffer,