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render: support overlapping fragment depth feedback

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This commit is contained in:
nmzik
2026-09-07 11:10:04 +04:00
parent 587df9145f
commit 2097ebb414
8 changed files with 286 additions and 84 deletions
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src/graphics/host_gpu/renderer/renderDraw.cpp
+33 -3
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@@ -475,7 +475,8 @@ struct DrawCallInfo {
};
RenderState RenderExecutor::AcquireRenderTargets(CommandBuffer& buffer, RenderColorInfo* colors,
uint32_t color_count, RenderDepthInfo& depth) {
uint32_t color_count, RenderDepthInfo& depth,
const std::optional<PreparedBindings>& pixel) {
EXIT_IF(colors == nullptr || color_count > RENDER_COLOR_ATTACHMENTS_MAX);
auto& cache = m_context.GetTextureCache();
RenderState state {};
@@ -567,7 +568,28 @@ RenderState RenderExecutor::AcquireRenderTargets(CommandBuffer& buffer, RenderCo
EXIT("mixed color/depth sample counts are unsupported: %u and %u\n", attachment_samples,
depth.desc.info.samples);
}
const auto layout = depth_attachment_layout(depth);
const bool feedback = depth.depth_write_enable && pixel &&
std::ranges::any_of(pixel->images, [&](const TextureBinding& binding) {
if (binding.image_id != depth.image_id ||
binding.desc.type != TextureCache::BindingType::Texture) {
return false;
}
const auto native =
std::ranges::find(image.views, binding.image_view, &CachedImageView::view);
EXIT_IF(native == image.views.end());
const auto& sampled = native->info;
const auto& target = depth.desc.view_info;
return (sampled.aspect & vk::ImageAspectFlagBits::eDepth) &&
ImageRangeOverlaps(sampled.base_level, sampled.level_count,
target.base_level, target.level_count) &&
ImageRangeOverlaps(sampled.base_layer, sampled.layer_count,
target.base_layer, target.layer_count);
});
if (feedback && !m_context.GetGraphics().attachment_feedback_loop_enabled) {
EXIT("depth attachment feedback loop is not supported by the host\n");
}
const auto layout = feedback ? vk::ImageLayout::eAttachmentFeedbackLoopOptimalEXT
: depth_attachment_layout(depth);
// The attachment store writes even when guest depth/stencil tests do not.
const auto access = vk::AccessFlagBits2::eDepthStencilAttachmentRead |
vk::AccessFlagBits2::eDepthStencilAttachmentWrite;
@@ -1089,7 +1111,8 @@ void RenderExecutor::ExecutePreparedDraw(uint64_t submit_id, CommandBuffer& buff
index_binding = PrepareIndexBuffer(buffer, index_source);
}
const auto rendering =
AcquireRenderTargets(buffer, state.color_info, state.color_count, state.depth_info);
AcquireRenderTargets(buffer, state.color_info, state.color_count, state.depth_info,
bindings.pixel);
if (log_pipeline_phase) {
LogDrawPhase(draw.name, "CreatePipeline");
@@ -1142,6 +1165,13 @@ void RenderExecutor::ExecutePreparedDraw(uint64_t submit_id, CommandBuffer& buff
SetGraphicsDynamicParams(buffer, vk_buffer, state.vs_input_info, state.color_info,
state.color_count, state.depth_info);
if (m_context.GetGraphics().attachment_feedback_loop_enabled) {
vk_buffer.setAttachmentFeedbackLoopEnableEXT(
rendering.depth_stencil_attachment.image_layout ==
vk::ImageLayout::eAttachmentFeedbackLoopOptimalEXT
? vk::ImageAspectFlags {vk::ImageAspectFlagBits::eDepth}
: vk::ImageAspectFlags {});
}
LogDrawPhase(draw.name, "BeginRendering");
if (set_auto_debug) {