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[dxvk] Use GPU-local buffer in clearCompressedColorImage

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Saves VA space in applications that do not initialize their textures..
This commit is contained in:
Philip Rebohle 2020-04-21 18:03:23 +02:00
parent 436357e280
commit bea16263e4
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GPG Key ID: C8CC613427A31C99
2 changed files with 31 additions and 7 deletions
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34
src/dxvk/dxvk_context.cpp
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@ -514,10 +514,8 @@ namespace dxvk {
image->info().format, image->info().format,
image->mipLevelExtent(subresources.baseMipLevel)); image->mipLevelExtent(subresources.baseMipLevel));
auto stagingSlice = m_staging.alloc(CACHE_LINE_SIZE, dataSize); auto zeroBuffer = createZeroBuffer(dataSize);
auto stagingHandle = stagingSlice.getSliceHandle(); auto zeroHandle = zeroBuffer->getSliceHandle();
std::memset(stagingHandle.mapPtr, 0, dataSize);
if (m_execBarriers.isImageDirty(image, subresources, DxvkAccess::Write)) if (m_execBarriers.isImageDirty(image, subresources, DxvkAccess::Write))
m_execBarriers.recordCommands(m_cmd); m_execBarriers.recordCommands(m_cmd);
@ -537,7 +535,7 @@ namespace dxvk {
for (uint32_t layer = 0; layer < subresources.layerCount; layer++) { for (uint32_t layer = 0; layer < subresources.layerCount; layer++) {
VkBufferImageCopy region; VkBufferImageCopy region;
region.bufferOffset = stagingHandle.offset; region.bufferOffset = zeroHandle.offset;
region.bufferRowLength = 0; region.bufferRowLength = 0;
region.bufferImageHeight = 0; region.bufferImageHeight = 0;
region.imageSubresource = vk::makeSubresourceLayers( region.imageSubresource = vk::makeSubresourceLayers(
@ -546,7 +544,7 @@ namespace dxvk {
region.imageExtent = extent; region.imageExtent = extent;
m_cmd->cmdCopyBufferToImage(DxvkCmdBuffer::ExecBuffer, m_cmd->cmdCopyBufferToImage(DxvkCmdBuffer::ExecBuffer,
stagingHandle.handle, image->handle(), zeroHandle.handle, image->handle(),
image->pickLayout(VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL), image->pickLayout(VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL),
1, &region); 1, &region);
} }
@ -562,7 +560,7 @@ namespace dxvk {
image->info().access); image->info().access);
m_cmd->trackResource<DxvkAccess::Write>(image); m_cmd->trackResource<DxvkAccess::Write>(image);
m_cmd->trackResource<DxvkAccess::Read>(stagingSlice.buffer()); m_cmd->trackResource<DxvkAccess::Read>(zeroBuffer);
} }
@ -4793,5 +4791,27 @@ namespace dxvk {
return m_cpLookupCache[idx]; return m_cpLookupCache[idx];
} }
Rc<DxvkBuffer> DxvkContext::createZeroBuffer(
VkDeviceSize size) {
if (m_zeroBuffer != nullptr && m_zeroBuffer->info().size >= size)
return m_zeroBuffer;
DxvkBufferCreateInfo bufInfo;
bufInfo.size = align<VkDeviceSize>(size, 1 << 20);
bufInfo.usage = VK_BUFFER_USAGE_TRANSFER_DST_BIT
| VK_BUFFER_USAGE_TRANSFER_SRC_BIT;
bufInfo.stages = VK_PIPELINE_STAGE_TRANSFER_BIT;
bufInfo.access = VK_ACCESS_TRANSFER_WRITE_BIT
| VK_ACCESS_TRANSFER_READ_BIT;
m_zeroBuffer = m_device->createBuffer(bufInfo,
VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT);
clearBuffer(m_zeroBuffer, 0, size, 0);
m_execBarriers.recordCommands(m_cmd);
return m_zeroBuffer;
}
} }

4
src/dxvk/dxvk_context.h
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@ -1014,6 +1014,7 @@ namespace dxvk {
Rc<DxvkCommandList> m_cmd; Rc<DxvkCommandList> m_cmd;
Rc<DxvkDescriptorPool> m_descPool; Rc<DxvkDescriptorPool> m_descPool;
Rc<DxvkBuffer> m_zeroBuffer;
DxvkContextFlags m_flags; DxvkContextFlags m_flags;
DxvkContextState m_state; DxvkContextState m_state;
@ -1217,6 +1218,9 @@ namespace dxvk {
DxvkComputePipeline* lookupComputePipeline( DxvkComputePipeline* lookupComputePipeline(
const DxvkComputePipelineShaders& shaders); const DxvkComputePipelineShaders& shaders);
Rc<DxvkBuffer> createZeroBuffer(
VkDeviceSize size);
}; };
} }