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0363c3e46d
Instead of counting descriptors to be allocated for the entire command buffer in a pre-pass, the bindgroup state tracker is used to allocate only dirty bindgroups upon recording draw/dispatch. If the heap has no more room and must be changed, bindgroups will be re-created according to the BGL. A future change will address the CPU descriptors and removal of the pre-pass. BUG=dawn:256,dawn:307 Change-Id: I6603de17cfda713bd4512c46e1c93618ca01bb7b Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/13400 Commit-Queue: Bryan Bernhart <bryan.bernhart@intel.com> Reviewed-by: Corentin Wallez <cwallez@chromium.org>
49 lines
1.9 KiB
C++
49 lines
1.9 KiB
C++
// Copyright 2020 The Dawn Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "dawn_native/d3d12/DescriptorHeapAllocationD3D12.h"
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#include "dawn_native/Error.h"
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namespace dawn_native { namespace d3d12 {
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DescriptorHeapAllocation::DescriptorHeapAllocation() : mSizeIncrement(0) {
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}
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DescriptorHeapAllocation::DescriptorHeapAllocation(
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uint32_t sizeIncrement,
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D3D12_CPU_DESCRIPTOR_HANDLE baseCPUDescriptorHandle,
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D3D12_GPU_DESCRIPTOR_HANDLE baseGPUDescriptorHandle)
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: mSizeIncrement(sizeIncrement),
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mBaseCPUDescriptorHandle(baseCPUDescriptorHandle),
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mBaseGPUDescriptorHandle(baseGPUDescriptorHandle) {
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}
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D3D12_CPU_DESCRIPTOR_HANDLE DescriptorHeapAllocation::GetCPUHandle(uint32_t offset) const {
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ASSERT(!IsInvalid());
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D3D12_CPU_DESCRIPTOR_HANDLE cpuHandle = mBaseCPUDescriptorHandle;
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cpuHandle.ptr += mSizeIncrement * offset;
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return cpuHandle;
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}
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D3D12_GPU_DESCRIPTOR_HANDLE DescriptorHeapAllocation::GetGPUHandle(uint32_t offset) const {
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ASSERT(!IsInvalid());
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D3D12_GPU_DESCRIPTOR_HANDLE gpuHandle = mBaseGPUDescriptorHandle;
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gpuHandle.ptr += mSizeIncrement * offset;
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return gpuHandle;
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}
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bool DescriptorHeapAllocation::IsInvalid() const {
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return mBaseCPUDescriptorHandle.ptr == 0;
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}
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}} // namespace dawn_native::d3d12
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