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graphics: make DispatchDirect asynchronous

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This commit is contained in:
nmzik
2026-08-05 14:49:45 +02:00
parent 9859b3e1d6
commit b2963aa6e0
4 changed files with 60 additions and 20 deletions
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src/graphics/host_gpu/renderer/renderCompute.cpp
+8 -4
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@@ -325,9 +325,6 @@ void RenderExecutor::DispatchDirect(uint64_t submit_id, RenderCommandBuffer& buf
auto vk_buffer = buffer.Handle();
CommitBindings(buffer, vk::PipelineBindPoint::eCompute, pipeline.pipeline_layout, bindings);
vk_buffer.bindPipeline(vk::PipelineBindPoint::eCompute, pipeline.pipeline);
vk_buffer.dispatch(thread_group_x, thread_group_y, thread_group_z);
bool has_storage_writes = HasShaderBufferWrites(input_info.stage);
has_storage_writes =
std::any_of(program.info.images.begin(), program.info.images.end(),
@@ -338,8 +335,15 @@ void RenderExecutor::DispatchDirect(uint64_t submit_id, RenderCommandBuffer& buf
}) ||
has_storage_writes;
if (has_storage_writes) {
ShaderWriteBarrier(vk_buffer, vk::PipelineStageFlagBits::eComputeShader);
// A host fence used to serialize every dispatch. Preserve its read-before-write ordering
// while allowing the queue to execute asynchronously.
ShaderWriteHazardBarrier(vk_buffer, vk::PipelineStageFlagBits::eComputeShader);
}
vk_buffer.bindPipeline(vk::PipelineBindPoint::eCompute, pipeline.pipeline);
vk_buffer.dispatch(thread_group_x, thread_group_y, thread_group_z);
// The removed host fence also ordered read-only dispatches before later writers.
ShaderAccessBarrier(vk_buffer, vk::PipelineStageFlagBits::eComputeShader);
ResetBindings();
}