RenderTargetsGL20.h

#pragma once
 
#include "../IRenderTargets.h"
 
#include "CommonGL20.h"
 
namespace Cogs
{
  struct TexturesGL20;
 
  namespace OpenGL20
  {
    const static size_t kMaxRenderTargets = 8;
  }
 
  struct RenderTargetGL20
  {
    TextureHandle textures[OpenGL20::kMaxRenderTargets];
    size_t numTextures;
    GLuint frameBuffer;
  };
 
  struct DepthStencilTargetGL20
  {
    TextureHandle texture;
    RenderTargetHandle renderTarget;
    bool renderBuffer;
    GLuint depthBuffer;
  };
 
  struct BlendStateGL20
  {
    BlendState color;
    BlendState alpha;
  };
 
  struct RenderTargetsGL20 : IRenderTargets
  {
    void initialize(TexturesGL20 * textures) {
      this->textures = textures;
    };
 
    ~RenderTargetsGL20();
 
    // Public API
 
    RenderTargetHandle createRenderTarget(const RenderTargetViewDescription * renderTargetViews, const size_t numViews) override;
    void releaseRenderTarget(RenderTargetHandle renderTargetHandle) override;
 
    DepthStencilHandle createDepthStencilTarget(const RenderTargetHandle handle) override;
    DepthStencilHandle createDepthStencilTarget(const RenderTargetHandle handle, const TextureHandle textureHandle) override;
    DepthStencilHandle createDepthStencilTarget(const RenderTargetHandle handle, const DepthStencilViewDescription & depthStencilView) override;
    void releaseDepthStencilTarget(DepthStencilHandle depthStencilHandle) override;
 
    DepthStencilStateHandle loadDepthStencilState(const DepthStencilState & depthStencilState) override;
    void releaseDepthStencilState(DepthStencilStateHandle handle) override;
 
    RasterizerStateHandle loadRasterizerState(const RasterizerState & rasterizerState) override;
    void releaseRasterizerState(RasterizerStateHandle handle) override;
 
    BlendStateHandle loadBlendState(const BlendState& blendState) override;
    BlendStateHandle loadBlendState(const BlendState& blendStateColor, const BlendState& blendStateAlpha) override;
    void releaseBlendState(BlendStateHandle handle) override;
 
    void releaseResources() override;
 
    void annotate(RenderTargetHandle handle, const StringView& name) override;
    void annotate(DepthStencilHandle handle, const StringView& name) override;
 
    ResourceMap<BlendStateHandle, BlendStateGL20> blendStates;
    ResourceMap<RasterizerStateHandle, RasterizerState> rasterizerStates;
    ResourceMap<DepthStencilStateHandle, DepthStencilState> depthStencilStates;
 
    ResourceMap<RenderTargetHandle, RenderTargetGL20> renderTargets;
    ResourceMap<DepthStencilHandle, DepthStencilTargetGL20> depthStencils;
 
    TexturesGL20 * textures;
  };
}