blob: 9f9facfb9c05b5094d210d06a2cd28c7e1e9f4cf [file] [log] [blame]
/*
* Copyright 2020 Google LLC
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "src/gpu/ganesh/d3d/GrD3DDescriptorHeap.h"
#include "src/gpu/ganesh/d3d/GrD3DGpu.h"
std::unique_ptr<GrD3DDescriptorHeap> GrD3DDescriptorHeap::Make(GrD3DGpu* gpu,
D3D12_DESCRIPTOR_HEAP_TYPE type,
unsigned int numDescriptors,
D3D12_DESCRIPTOR_HEAP_FLAGS flags) {
D3D12_DESCRIPTOR_HEAP_DESC heapDesc = {};
heapDesc.Type = type;
heapDesc.NumDescriptors = numDescriptors;
heapDesc.Flags = flags;
ID3D12DescriptorHeap* heap;
gpu->device()->CreateDescriptorHeap(&heapDesc, IID_PPV_ARGS(&heap));
return std::unique_ptr<GrD3DDescriptorHeap>(
new GrD3DDescriptorHeap(std::move(gr_cp<ID3D12DescriptorHeap>(heap)),
gpu->device()->GetDescriptorHandleIncrementSize(type)));
}
GrD3DDescriptorHeap::GrD3DDescriptorHeap(const gr_cp<ID3D12DescriptorHeap>& heap,
unsigned int handleIncrementSize)
: fHeap(heap)
, fHandleIncrementSize(handleIncrementSize)
, fUniqueID(GenID()) {
fCPUHeapStart = fHeap->GetCPUDescriptorHandleForHeapStart();
fGPUHeapStart = fHeap->GetGPUDescriptorHandleForHeapStart();
}
GrD3DDescriptorHeap::CPUHandle GrD3DDescriptorHeap::getCPUHandle(unsigned int index) {
SkASSERT(index < fHeap->GetDesc().NumDescriptors);
D3D12_CPU_DESCRIPTOR_HANDLE handle = fCPUHeapStart;
handle.ptr += index * fHandleIncrementSize;
return {handle, fUniqueID};
}
GrD3DDescriptorHeap::GPUHandle GrD3DDescriptorHeap::getGPUHandle(unsigned int index) {
SkASSERT(index < fHeap->GetDesc().NumDescriptors);
D3D12_GPU_DESCRIPTOR_HANDLE handle = fGPUHeapStart;
handle.ptr += index * fHandleIncrementSize;
return {handle, fUniqueID};
}