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// Copyright 2019 The Dawn Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef DAWNNATIVE_D3D12_RENDERPASSBUILDERD3D12_H_
#define DAWNNATIVE_D3D12_RENDERPASSBUILDERD3D12_H_
#include "dawn/common/Constants.h"
#include "dawn/common/ityp_array.h"
#include "dawn/common/ityp_span.h"
#include "dawn/native/IntegerTypes.h"
#include "dawn/native/d3d12/d3d12_platform.h"
#include "dawn/native/dawn_platform.h"
#include <array>
namespace dawn::native::d3d12 {
class TextureView;
// RenderPassBuilder stores parameters related to render pass load and store operations.
// When the D3D12 render pass API is available, the needed descriptors can be fetched
// directly from the RenderPassBuilder. When the D3D12 render pass API is not available, the
// descriptors are still fetched and any information necessary to emulate the load and store
// operations is extracted from the descriptors.
class RenderPassBuilder {
public:
RenderPassBuilder(bool hasUAV);
// Returns the highest color attachment index + 1. If there is no color attachment, returns
// 0. Range: [0, kMaxColorAttachments + 1)
ColorAttachmentIndex GetHighestColorAttachmentIndexPlusOne() const;
// Returns descriptors that are fed directly to BeginRenderPass, or are used as parameter
// storage if D3D12 render pass API is unavailable.
ityp::span<ColorAttachmentIndex, const D3D12_RENDER_PASS_RENDER_TARGET_DESC>
GetRenderPassRenderTargetDescriptors() const;
const D3D12_RENDER_PASS_DEPTH_STENCIL_DESC* GetRenderPassDepthStencilDescriptor() const;
D3D12_RENDER_PASS_FLAGS GetRenderPassFlags() const;
// Returns attachment RTVs to use with OMSetRenderTargets.
const D3D12_CPU_DESCRIPTOR_HANDLE* GetRenderTargetViews() const;
bool HasDepthOrStencil() const;
// Functions that set the appropriate values in the render pass descriptors.
void SetDepthAccess(wgpu::LoadOp loadOp,
wgpu::StoreOp storeOp,
float clearDepth,
DXGI_FORMAT format);
void SetDepthNoAccess();
void SetDepthStencilNoAccess();
void SetRenderTargetBeginningAccess(ColorAttachmentIndex attachment,
wgpu::LoadOp loadOp,
dawn::native::Color clearColor,
DXGI_FORMAT format);
void SetRenderTargetEndingAccess(ColorAttachmentIndex attachment, wgpu::StoreOp storeOp);
void SetRenderTargetEndingAccessResolve(ColorAttachmentIndex attachment,
wgpu::StoreOp storeOp,
TextureView* resolveSource,
TextureView* resolveDestination);
void SetStencilAccess(wgpu::LoadOp loadOp,
wgpu::StoreOp storeOp,
uint8_t clearStencil,
DXGI_FORMAT format);
void SetStencilNoAccess();
void SetRenderTargetView(ColorAttachmentIndex attachmentIndex,
D3D12_CPU_DESCRIPTOR_HANDLE baseDescriptor,
bool isNullRTV);
void SetDepthStencilView(D3D12_CPU_DESCRIPTOR_HANDLE baseDescriptor);
private:
ColorAttachmentIndex mHighestColorAttachmentIndexPlusOne{uint8_t(0)};
bool mHasDepthOrStencil = false;
D3D12_RENDER_PASS_FLAGS mRenderPassFlags = D3D12_RENDER_PASS_FLAG_NONE;
D3D12_RENDER_PASS_DEPTH_STENCIL_DESC mRenderPassDepthStencilDesc;
ityp::
array<ColorAttachmentIndex, D3D12_RENDER_PASS_RENDER_TARGET_DESC, kMaxColorAttachments>
mRenderPassRenderTargetDescriptors;
ityp::array<ColorAttachmentIndex, D3D12_CPU_DESCRIPTOR_HANDLE, kMaxColorAttachments>
mRenderTargetViews;
ityp::array<ColorAttachmentIndex,
D3D12_RENDER_PASS_ENDING_ACCESS_RESOLVE_SUBRESOURCE_PARAMETERS,
kMaxColorAttachments>
mSubresourceParams;
};
} // namespace dawn::native::d3d12
#endif // DAWNNATIVE_D3D12_RENDERPASSBUILDERD3D12_H_