// Copyright 2018 The Dawn & Tint Authors
//
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#ifndef SRC_DAWN_UTILS_COMBORENDERPIPELINEDESCRIPTOR_H_
#define SRC_DAWN_UTILS_COMBORENDERPIPELINEDESCRIPTOR_H_

#include <array>
#include <vector>

#include "dawn/common/Constants.h"
#include "dawn/webgpu_cpp.h"

namespace dawn::utils {

// Primarily used by tests to easily set up the vertex buffer state portion of a RenderPipeline.
class ComboVertexState {
  public:
    ComboVertexState();

    ComboVertexState(const ComboVertexState&) = delete;
    ComboVertexState& operator=(const ComboVertexState&) = delete;
    ComboVertexState(ComboVertexState&&) = delete;
    ComboVertexState& operator=(ComboVertexState&&) = delete;

    size_t vertexBufferCount = 0;
    std::vector<wgpu::VertexBufferLayout> cVertexBuffers =
        std::vector<wgpu::VertexBufferLayout>(kMaxVertexBuffers);
    std::vector<wgpu::VertexAttribute> cAttributes =
        std::vector<wgpu::VertexAttribute>(kMaxVertexAttributes);
};

class ComboRenderPipelineDescriptor : public wgpu::RenderPipelineDescriptor {
  public:
    ComboRenderPipelineDescriptor();

    ComboRenderPipelineDescriptor(const ComboRenderPipelineDescriptor&) = delete;
    ComboRenderPipelineDescriptor& operator=(const ComboRenderPipelineDescriptor&) = delete;
    ComboRenderPipelineDescriptor(ComboRenderPipelineDescriptor&&) = delete;
    ComboRenderPipelineDescriptor& operator=(ComboRenderPipelineDescriptor&&) = delete;

    wgpu::DepthStencilState* EnableDepthStencil(
        wgpu::TextureFormat format = wgpu::TextureFormat::Depth24PlusStencil8);
    void DisableDepthStencil();

    std::array<wgpu::VertexBufferLayout, kMaxVertexBuffers> cBuffers;
    std::array<wgpu::VertexAttribute, kMaxVertexAttributes> cAttributes;
    std::array<wgpu::ColorTargetState, kMaxColorAttachments> cTargets;
    std::array<wgpu::BlendState, kMaxColorAttachments> cBlends;

    wgpu::FragmentState cFragment;
    wgpu::DepthStencilState cDepthStencil;
};

}  // namespace dawn::utils

#endif  // SRC_DAWN_UTILS_COMBORENDERPIPELINEDESCRIPTOR_H_