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D3D12: Avoid redundant render pass restarts

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This commit is contained in:
Stenzek 2024-07-23 17:38:24 +10:00
parent 0407f939fc
commit 5e8870ec69
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3 changed files with 35 additions and 13 deletions
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41
src/util/d3d12_device.cpp
View file

@ -1659,22 +1659,45 @@ void D3D12Device::SetRenderTargets(GPUTexture* const* rts, u32 num_rts, GPUTextu
{
DebugAssert(
!(flags & (GPUPipeline::RenderPassFlag::ColorFeedbackLoop | GPUPipeline::RenderPassFlag::SampleDepthBuffer)));
const bool image_bind_changed = ((m_current_render_pass_flags ^ flags) & GPUPipeline::BindRenderTargetsAsImages);
bool changed =
(m_num_current_render_targets != num_rts || m_current_depth_target != ds || m_current_render_pass_flags != flags);
bool needs_ds_clear = (ds && ds->IsClearedOrInvalidated());
bool needs_rt_clear = false;
if (InRenderPass())
EndRenderPass();
m_current_depth_target = static_cast<D3D12Texture*>(ds);
if (num_rts > 0)
std::memcpy(m_current_render_targets.data(), rts, sizeof(D3D12Texture*) * num_rts);
for (u32 i = 0; i < num_rts; i++)
{
D3D12Texture* const RT = static_cast<D3D12Texture*>(rts[i]);
changed |= m_current_render_targets[i] != RT;
m_current_render_targets[i] = RT;
needs_rt_clear |= RT->IsClearedOrInvalidated();
}
for (u32 i = num_rts; i < m_num_current_render_targets; i++)
m_current_render_targets[i] = nullptr;
m_num_current_render_targets = num_rts;
// Need a root signature change if switching to UAVs.
m_dirty_flags |=
((m_current_render_pass_flags ^ flags) & GPUPipeline::BindRenderTargetsAsImages) ? LAYOUT_DEPENDENT_DIRTY_STATE : 0;
m_dirty_flags = (flags & GPUPipeline::BindRenderTargetsAsImages) ? (m_dirty_flags | DIRTY_FLAG_RT_UAVS) :
(m_dirty_flags & ~DIRTY_FLAG_RT_UAVS);
m_num_current_render_targets = Truncate8(num_rts);
m_current_render_pass_flags = flags;
// Don't end render pass unless it's necessary.
if (changed)
{
if (InRenderPass())
EndRenderPass();
// Need a root signature change if switching to UAVs.
m_dirty_flags |= image_bind_changed ? LAYOUT_DEPENDENT_DIRTY_STATE : 0;
m_dirty_flags = (flags & GPUPipeline::BindRenderTargetsAsImages) ? (m_dirty_flags | DIRTY_FLAG_RT_UAVS) :
(m_dirty_flags & ~DIRTY_FLAG_RT_UAVS);
}
else if (needs_rt_clear || needs_ds_clear)
{
if (InRenderPass())
EndRenderPass();
}
}
void D3D12Device::BeginRenderPass()

2
src/util/d3d12_device.h
View file

@ -338,7 +338,7 @@ private:
D3D12Pipeline* m_current_pipeline = nullptr;
D3D12_PRIMITIVE_TOPOLOGY m_current_topology = D3D_PRIMITIVE_TOPOLOGY_UNDEFINED;
u32 m_num_current_render_targets = 0;
u8 m_num_current_render_targets = 0;
GPUPipeline::RenderPassFlag m_current_render_pass_flags = GPUPipeline::NoRenderPassFlags;
std::array<D3D12Texture*, MAX_RENDER_TARGETS> m_current_render_targets = {};
D3D12Texture* m_current_depth_target = nullptr;

5
src/util/vulkan_device.cpp
View file

@ -3318,10 +3318,9 @@ void VulkanDevice::SetRenderTargets(GPUTexture* const* rts, u32 num_rts, GPUText
DIRTY_FLAG_INPUT_ATTACHMENT :
0);
}
// TODO: This could use vkCmdClearAttachments() instead.
if (needs_rt_clear || needs_ds_clear)
else if (needs_rt_clear || needs_ds_clear)
{
// TODO: This could use vkCmdClearAttachments() instead.
if (InRenderPass())
EndRenderPass();
}