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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/guest_gpu/graphicsRun.cpp
+16 -16
View File
@@ -313,7 +313,7 @@ void CommandProcessor::Reset() {
m_ucfg.Reset();
m_ctx.Reset();
m_saved_ctx.Reset();
m_context_state_pushed = false;
m_context_state_pushed = false;
m_index_type_and_size = 0;
m_index_buffer_size = 0;
m_user_data_marker = HW::UserSgprType::Unknown;
@@ -1176,9 +1176,9 @@ void CommandProcessor::DrawIndirectMulti(uint32_t data_offset, uint32_t max_coun
void CommandProcessor::DispatchDirect(uint32_t thread_group_x, uint32_t thread_group_y,
uint32_t thread_group_z, uint32_t mode) {
uint32_t frame_num = 0;
uint32_t local_x = 1;
uint32_t local_y = 1;
uint32_t local_z = 1;
// uint32_t local_x = 1;
// uint32_t local_y = 1;
// uint32_t local_z = 1;
{
CheckBuffer();
@@ -1202,9 +1202,9 @@ void CommandProcessor::DispatchDirect(uint32_t thread_group_x, uint32_t thread_g
}
const auto& cs = m_sh_ctx.GetCs().cs_regs;
local_x = std::max(cs.num_thread_x, 1u);
local_y = std::max(cs.num_thread_y, 1u);
local_z = std::max(cs.num_thread_z, 1u);
// local_x = std::max(cs.num_thread_x, 1u);
// local_y = std::max(cs.num_thread_y, 1u);
// local_z = std::max(cs.num_thread_z, 1u);
if (cs.wave_size == 64u) {
static std::atomic_bool logged_wave64_shader {false};
if (!logged_wave64_shader.exchange(true, std::memory_order_relaxed)) {
@@ -1220,27 +1220,27 @@ void CommandProcessor::DispatchDirect(uint32_t thread_group_x, uint32_t thread_g
thread_group_y, thread_group_z, mode);
}
constexpr uint32_t DispatchInitiatorUseThreadDimensions = 1u << 5u;
/*constexpr uint32_t DispatchInitiatorUseThreadDimensions = 1u << 5u;
auto group_count = [](uint32_t threads, uint32_t group_size) {
return (threads == 0
? 0u
: (threads + std::max(group_size, 1u) - 1u) / std::max(group_size, 1u));
return (threads == 0
? 0u
: (threads + std::max(group_size, 1u) - 1u) / std::max(group_size, 1u));
};
auto groups_x = thread_group_x;
auto groups_y = thread_group_y;
auto groups_z = thread_group_z;
if ((mode & DispatchInitiatorUseThreadDimensions) != 0) {
groups_x = group_count(thread_group_x, local_x);
groups_y = group_count(thread_group_y, local_y);
groups_z = group_count(thread_group_z, local_z);
groups_x = group_count(thread_group_x, local_x);
groups_y = group_count(thread_group_y, local_y);
groups_z = group_count(thread_group_z, local_z);
}
const uint64_t invocations =
static_cast<uint64_t>(groups_x) * groups_y * groups_z * local_x * local_y * local_z;
if (invocations != 0) {
BufferFlushAndWait();
}
BufferFlushAndWait();
}*/
}
void CommandProcessor::DispatchIndirect(uint32_t data_offset, uint32_t mode) {
src/graphics/host_gpu/renderer/pipeline/shaderResourceBarrier.cpp
+31
View File
@@ -36,6 +36,22 @@ VulkanMemoryBarrier MakeShaderWriteDependency() {
return barrier;
}
VulkanMemoryBarrier MakeShaderAccessDependency() {
VulkanMemoryBarrier barrier {};
barrier.sType = vk::StructureType::eMemoryBarrier;
barrier.srcAccessMask = vk::AccessFlagBits::eShaderRead | vk::AccessFlagBits::eShaderWrite;
barrier.dstAccessMask = vk::AccessFlagBits::eMemoryRead | vk::AccessFlagBits::eMemoryWrite;
return barrier;
}
VulkanMemoryBarrier MakeShaderWriteHazardDependency() {
VulkanMemoryBarrier barrier {};
barrier.sType = vk::StructureType::eMemoryBarrier;
barrier.srcAccessMask = vk::AccessFlagBits::eMemoryRead | vk::AccessFlagBits::eMemoryWrite;
barrier.dstAccessMask = vk::AccessFlagBits::eShaderRead | vk::AccessFlagBits::eShaderWrite;
return barrier;
}
vk::BufferMemoryBarrier MakeGdsDependency(vk::Buffer buffer) {
EXIT_IF(buffer == nullptr);
@@ -84,6 +100,21 @@ bool HasShaderBufferWrites(const ShaderStageRuntime& runtime) {
return !CollectShaderBufferWrites(*runtime.program, *runtime.resources).empty();
}
void ShaderAccessBarrier(vk::CommandBuffer vk_buffer, vk::PipelineStageFlags source_stages) {
EXIT_IF(vk_buffer == nullptr || !source_stages);
const auto barrier = MakeShaderAccessDependency();
vk_buffer.pipelineBarrier(source_stages, vk::PipelineStageFlagBits::eAllCommands,
vk::DependencyFlags {}, 1, &barrier, 0, nullptr, 0, nullptr);
}
void ShaderWriteHazardBarrier(vk::CommandBuffer vk_buffer,
vk::PipelineStageFlags destination_stages) {
EXIT_IF(vk_buffer == nullptr || !destination_stages);
const auto barrier = MakeShaderWriteHazardDependency();
vk_buffer.pipelineBarrier(vk::PipelineStageFlagBits::eAllCommands, destination_stages,
vk::DependencyFlags {}, 1, &barrier, 0, nullptr, 0, nullptr);
}
void ShaderWriteBarrier(vk::CommandBuffer vk_buffer, vk::PipelineStageFlags source_stages) {
EXIT_IF(vk_buffer == nullptr || !source_stages);
const auto barrier = MakeShaderWriteDependency();
src/graphics/host_gpu/renderer/pipeline/shaderResourceBarrier.h
+5
View File
@@ -18,12 +18,17 @@ struct ShaderBufferWriteRange {
};
vk::PipelineStageFlags ShaderPipelineStages(vk::ShaderStageFlags stages);
VulkanMemoryBarrier MakeShaderAccessDependency();
VulkanMemoryBarrier MakeShaderWriteHazardDependency();
VulkanMemoryBarrier MakeShaderWriteDependency();
vk::BufferMemoryBarrier MakeGdsDependency(vk::Buffer buffer);
std::vector<ShaderBufferWriteRange>
CollectShaderBufferWrites(const ShaderRecompiler::IR::Program& program,
const ShaderRecompiler::IR::ResourceSnapshot& resources);
bool HasShaderBufferWrites(const ShaderStageRuntime& runtime);
void ShaderAccessBarrier(vk::CommandBuffer vk_buffer, vk::PipelineStageFlags source_stages);
void ShaderWriteHazardBarrier(vk::CommandBuffer vk_buffer,
vk::PipelineStageFlags destination_stages);
void ShaderWriteBarrier(vk::CommandBuffer vk_buffer, vk::PipelineStageFlags source_stages);
} // namespace Libs::Graphics
src/graphics/host_gpu/renderer/renderCompute.cpp
+8 -4
View File
@@ -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();
}