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// Copyright 2017 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_RENDERPIPELINE_H_
#define DAWNNATIVE_RENDERPIPELINE_H_
#include "common/TypedInteger.h"
#include "dawn_native/AttachmentState.h"
#include "dawn_native/Forward.h"
#include "dawn_native/IntegerTypes.h"
#include "dawn_native/Pipeline.h"
#include "dawn_native/dawn_platform.h"
#include <array>
#include <bitset>
namespace dawn_native {
class DeviceBase;
MaybeError ValidateRenderPipelineDescriptor(DeviceBase* device,
const RenderPipelineDescriptor* descriptor);
std::vector<StageAndDescriptor> GetRenderStagesAndSetDummyShader(
DeviceBase* device,
const RenderPipelineDescriptor* descriptor);
size_t IndexFormatSize(wgpu::IndexFormat format);
bool IsStripPrimitiveTopology(wgpu::PrimitiveTopology primitiveTopology);
bool StencilTestEnabled(const DepthStencilState* mDepthStencil);
struct VertexAttributeInfo {
wgpu::VertexFormat format;
uint64_t offset;
VertexAttributeLocation shaderLocation;
VertexBufferSlot vertexBufferSlot;
};
struct VertexBufferInfo {
uint64_t arrayStride;
wgpu::VertexStepMode stepMode;
uint16_t usedBytesInStride;
};
class RenderPipelineBase : public PipelineBase {
public:
RenderPipelineBase(DeviceBase* device, const RenderPipelineDescriptor* descriptor);
~RenderPipelineBase() override;
static RenderPipelineBase* MakeError(DeviceBase* device);
ObjectType GetType() const override;
const ityp::bitset<VertexAttributeLocation, kMaxVertexAttributes>&
GetAttributeLocationsUsed() const;
const VertexAttributeInfo& GetAttribute(VertexAttributeLocation location) const;
const ityp::bitset<VertexBufferSlot, kMaxVertexBuffers>& GetVertexBufferSlotsUsed() const;
const ityp::bitset<VertexBufferSlot, kMaxVertexBuffers>&
GetVertexBufferSlotsUsedAsVertexBuffer() const;
const ityp::bitset<VertexBufferSlot, kMaxVertexBuffers>&
GetVertexBufferSlotsUsedAsInstanceBuffer() const;
const VertexBufferInfo& GetVertexBuffer(VertexBufferSlot slot) const;
uint32_t GetVertexBufferCount() const;
const ColorTargetState* GetColorTargetState(ColorAttachmentIndex attachmentSlot) const;
const DepthStencilState* GetDepthStencilState() const;
wgpu::PrimitiveTopology GetPrimitiveTopology() const;
wgpu::IndexFormat GetStripIndexFormat() const;
wgpu::CullMode GetCullMode() const;
wgpu::FrontFace GetFrontFace() const;
bool IsDepthBiasEnabled() const;
int32_t GetDepthBias() const;
float GetDepthBiasSlopeScale() const;
float GetDepthBiasClamp() const;
bool ShouldClampDepth() const;
ityp::bitset<ColorAttachmentIndex, kMaxColorAttachments> GetColorAttachmentsMask() const;
bool HasDepthStencilAttachment() const;
wgpu::TextureFormat GetColorAttachmentFormat(ColorAttachmentIndex attachment) const;
wgpu::TextureFormat GetDepthStencilFormat() const;
uint32_t GetSampleCount() const;
uint32_t GetSampleMask() const;
bool IsAlphaToCoverageEnabled() const;
const AttachmentState* GetAttachmentState() const;
// Functions necessary for the unordered_set<RenderPipelineBase*>-based cache.
size_t ComputeContentHash() override;
struct EqualityFunc {
bool operator()(const RenderPipelineBase* a, const RenderPipelineBase* b) const;
};
// Initialize() should only be called once by the frontend.
virtual MaybeError Initialize() = 0;
private:
RenderPipelineBase(DeviceBase* device, ObjectBase::ErrorTag tag);
// Vertex state
uint32_t mVertexBufferCount;
ityp::bitset<VertexAttributeLocation, kMaxVertexAttributes> mAttributeLocationsUsed;
ityp::array<VertexAttributeLocation, VertexAttributeInfo, kMaxVertexAttributes>
mAttributeInfos;
ityp::bitset<VertexBufferSlot, kMaxVertexBuffers> mVertexBufferSlotsUsed;
ityp::bitset<VertexBufferSlot, kMaxVertexBuffers> mVertexBufferSlotsUsedAsVertexBuffer;
ityp::bitset<VertexBufferSlot, kMaxVertexBuffers> mVertexBufferSlotsUsedAsInstanceBuffer;
ityp::array<VertexBufferSlot, VertexBufferInfo, kMaxVertexBuffers> mVertexBufferInfos;
// Attachments
Ref<AttachmentState> mAttachmentState;
ityp::array<ColorAttachmentIndex, ColorTargetState, kMaxColorAttachments> mTargets;
ityp::array<ColorAttachmentIndex, BlendState, kMaxColorAttachments> mTargetBlend;
// Other state
PrimitiveState mPrimitive;
DepthStencilState mDepthStencil;
MultisampleState mMultisample;
bool mClampDepth = false;
};
} // namespace dawn_native
#endif // DAWNNATIVE_RENDERPIPELINE_H_