BuffersGL20.h

#pragma once
 
#include "../Base/BuffersCommon.h"
 
#include "CommonGL20.h"
 
namespace Cogs
{
  struct BufferGL20
  {
    GLuint bufferId;
    GLuint counterBufferId;
 
    size_t size;
    size_t count;
 
    GLenum target;
 
    union
    {
      const VertexFormat * vertexFormat;
      GLenum indexSize;
    };
 
    std::vector<uint8_t> mappedData;
    MapMode::EMapMode mapFlags;
  };
 
  struct InputLayoutGL20
  {
    const VertexFormat * formats[8];
    size_t numFormats;
  };
 
  struct BuffersGL20 : public BuffersCommon
  {
    VertexBufferHandle loadVertexBuffer(const void *data, const size_t count, const VertexFormat & format) override;
    VertexBufferHandle loadVertexBuffer(const void *data, const size_t count, VertexFormatHandle formatHandle) override;
    void releaseVertexBuffer(VertexBufferHandle vertexBufferHandle) override;
 
    IndexBufferHandle loadIndexBuffer(const void *data, const size_t count, const size_t indexSize) override;
    void releaseIndexBuffer(IndexBufferHandle indexBufferHandle) override;
 
    InputLayoutHandle loadInputLayout(const VertexFormatHandle * vertexFormats, const size_t count, EffectHandle effectHandle) override;
    void releaseInputLayout(InputLayoutHandle vertexFormatHandle) override;
 
    BufferHandle loadBuffer(const void * data, const size_t size, Usage::EUsage usage, uint32_t accessMode, uint32_t bindFlags, uint32_t stride = 0) override;
    void retrieveSubBuffer(void * data, BufferHandle source, const size_t offset, const size_t size) override;
 
    void releaseBuffer(BufferHandle bufferHandle) override;
 
    void * getNativeHandle(BufferHandle bufferHandle) override { return (void*)(size_t)buffers[bufferHandle].bufferId; }
 
    void releaseResources() override;
 
    void annotate(BufferHandle handle, const StringView& name) override;
    void annotate(VertexBufferHandle handle, const StringView& name) override;
 
    ResourceMap<BufferHandle, BufferGL20> buffers;
    size_t bufferMemoryConsumption = 0;
 
    ResourceMap<InputLayoutHandle, InputLayoutGL20> inputLayouts;
  };
}