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[dxvk] Track transform feedback counter hazards properly

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If we avoid needlessly pausing and resuming transform feedback with the
same counters, we can use existing barrier tracking to insert counter
barriers without requiring an invalid render pass self-dependency.
This commit is contained in:
Philip Rebohle 2021-08-23 16:36:39 +02:00
parent 04474b761b
commit 2f5c7562c2
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GPG Key ID: C8CC613427A31C99
2 changed files with 12 additions and 20 deletions
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31
src/dxvk/dxvk_context.cpp
View File

@ -2146,10 +2146,10 @@ namespace dxvk {
DxvkCmdBuffer cmdBuffer;
if (replaceBuffer) {
// Pause transform feedback so that we don't mess
// with the currently bound counter buffers
// Suspend render pass so that we don't mess with the
// currently bound transform feedback counter buffers
if (m_flags.test(DxvkContextFlag::GpXfbActive))
this->pauseTransformFeedback();
this->spillRenderPass(true);
// As an optimization, allocate a free slice and perform
// the copy in the initialization command buffer instead
@ -3925,8 +3925,6 @@ namespace dxvk {
m_gfxBarriers.recordCommands(m_cmd);
this->unbindGraphicsPipeline();
m_flags.clr(DxvkContextFlag::GpDirtyXfbCounters);
} else if (!suspend) {
// We may end a previously suspended render pass
if (m_flags.test(DxvkContextFlag::GpRenderPassSuspended)) {
@ -4023,16 +4021,6 @@ namespace dxvk {
if (!m_flags.test(DxvkContextFlag::GpXfbActive)) {
m_flags.set(DxvkContextFlag::GpXfbActive);
if (m_flags.test(DxvkContextFlag::GpDirtyXfbCounters)) {
m_flags.clr(DxvkContextFlag::GpDirtyXfbCounters);
this->emitMemoryBarrier(0,
VK_PIPELINE_STAGE_TRANSFORM_FEEDBACK_BIT_EXT,
VK_ACCESS_TRANSFORM_FEEDBACK_COUNTER_WRITE_BIT_EXT,
VK_PIPELINE_STAGE_DRAW_INDIRECT_BIT, /* XXX */
VK_ACCESS_TRANSFORM_FEEDBACK_COUNTER_READ_BIT_EXT);
}
VkBuffer ctrBuffers[MaxNumXfbBuffers];
VkDeviceSize ctrOffsets[MaxNumXfbBuffers];
@ -4077,8 +4065,6 @@ namespace dxvk {
m_cmd->cmdEndTransformFeedback(
0, MaxNumXfbBuffers, ctrBuffers, ctrOffsets);
m_flags.set(DxvkContextFlag::GpDirtyXfbCounters);
}
}
@ -4171,8 +4157,6 @@ namespace dxvk {
bool DxvkContext::updateGraphicsPipelineState() {
this->pauseTransformFeedback();
// Set up vertex buffer strides for active bindings
for (uint32_t i = 0; i < m_state.gp.state.il.bindingCount(); i++) {
const uint32_t binding = m_state.gp.state.ilBindings[i].binding();
@ -5105,11 +5089,20 @@ namespace dxvk {
&& m_state.gp.flags.test(DxvkGraphicsPipelineFlag::HasTransformFeedback)) {
for (uint32_t i = 0; i < MaxNumXfbBuffers && !requiresBarrier; i++) {
const auto& xfbBufferSlice = m_state.xfb.buffers[i];
const auto& xfbCounterSlice = m_state.xfb.counters[i];
if (xfbBufferSlice.defined()) {
requiresBarrier = this->checkGfxBufferBarrier<DoEmit>(xfbBufferSlice,
VK_PIPELINE_STAGE_TRANSFORM_FEEDBACK_BIT_EXT,
VK_ACCESS_TRANSFORM_FEEDBACK_WRITE_BIT_EXT) != 0;
if (xfbCounterSlice.defined()) {
requiresBarrier |= this->checkGfxBufferBarrier<DoEmit>(xfbCounterSlice,
VK_PIPELINE_STAGE_DRAW_INDIRECT_BIT |
VK_PIPELINE_STAGE_TRANSFORM_FEEDBACK_BIT_EXT,
VK_ACCESS_TRANSFORM_FEEDBACK_COUNTER_READ_BIT_EXT |
VK_ACCESS_TRANSFORM_FEEDBACK_COUNTER_WRITE_BIT_EXT) != 0;
}
}
}
}

1
src/dxvk/dxvk_context_state.h
View File

@ -32,7 +32,6 @@ namespace dxvk {
GpDirtyVertexBuffers, ///< Vertex buffer bindings are out of date
GpDirtyIndexBuffer, ///< Index buffer binding are out of date
GpDirtyXfbBuffers, ///< Transform feedback buffer bindings are out of date
GpDirtyXfbCounters, ///< Counter buffer values are dirty
GpDirtyBlendConstants, ///< Blend constants have changed
GpDirtyDepthBias, ///< Depth bias has changed
GpDirtyDepthBounds, ///< Depth bounds have changed