backend_opengl3.h

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// This file can be included several times.
#if(!defined(BACKEND_AS_OPENGL_ES) && !defined(ENGINE_CLIENT_BACKEND_OPENGL_BACKEND_OPENGL3_H)) || \
    (defined(BACKEND_AS_OPENGL_ES) && !defined(ENGINE_CLIENT_BACKEND_OPENGL_BACKEND_OPENGL3_H_AS_ES))
 
#if !defined(BACKEND_AS_OPENGL_ES) && !defined(ENGINE_CLIENT_BACKEND_OPENGL_BACKEND_OPENGL3_H)
#define ENGINE_CLIENT_BACKEND_OPENGL_BACKEND_OPENGL3_H
#endif
 
#if defined(BACKEND_AS_OPENGL_ES) && !defined(ENGINE_CLIENT_BACKEND_OPENGL_BACKEND_OPENGL3_H_AS_ES)
#define ENGINE_CLIENT_BACKEND_OPENGL_BACKEND_OPENGL3_H_AS_ES
#endif
 
#include "backend_opengl.h"
 
class CGLSLPrimitiveExProgram;
class CGLSLQuadProgram;
class CGLSLSpriteMultipleProgram;
class CGLSLTextProgram;
 
#define MAX_STREAM_BUFFER_COUNT 10
 
// takes care of opengl 3.3+ related rendering
class CCommandProcessorFragment_OpenGL3_3 : public CCommandProcessorFragment_OpenGL3
{
protected:
    int m_MaxQuadsAtOnce;
    static const int ms_MaxQuadsPossible = 256;
 
    CGLSLPrimitiveProgram *m_pPrimitiveProgram;
    CGLSLPrimitiveProgram *m_pPrimitiveProgramTextured;
    CGLSLQuadProgram *m_pQuadProgram;
    CGLSLQuadProgram *m_pQuadProgramTextured;
    CGLSLTextProgram *m_pTextProgram;
    CGLSLPrimitiveExProgram *m_pPrimitiveExProgram;
    CGLSLPrimitiveExProgram *m_pPrimitiveExProgramTextured;
    CGLSLPrimitiveExProgram *m_pPrimitiveExProgramRotationless;
    CGLSLPrimitiveExProgram *m_pPrimitiveExProgramTexturedRotationless;
    CGLSLSpriteMultipleProgram *m_pSpriteProgramMultiple;
 
    TWGLuint m_LastProgramId;
 
    TWGLuint m_aPrimitiveDrawVertexId[MAX_STREAM_BUFFER_COUNT];
    TWGLuint m_PrimitiveDrawVertexIdTex3D;
    TWGLuint m_aPrimitiveDrawBufferId[MAX_STREAM_BUFFER_COUNT];
    TWGLuint m_PrimitiveDrawBufferIdTex3D;
 
    TWGLuint m_aLastIndexBufferBound[MAX_STREAM_BUFFER_COUNT];
 
    int m_LastStreamBuffer;
 
    TWGLuint m_QuadDrawIndexBufferId;
    unsigned int m_CurrentIndicesInBuffer;
 
    void DestroyBufferContainer(int Index, bool DeleteBOs = true);
 
    void AppendIndices(unsigned int NewIndicesCount);
 
    struct SBufferContainer
    {
        SBufferContainer() :
            m_VertArrayId(0), m_LastIndexBufferBound(0) {}
        TWGLuint m_VertArrayId;
        TWGLuint m_LastIndexBufferBound;
        SBufferContainerInfo m_ContainerInfo;
    };
    std::vector<SBufferContainer> m_vBufferContainers;
 
    std::vector<TWGLuint> m_vBufferObjectIndices;
 
    CCommandBuffer::SColorf m_ClearColor;
 
    void InitPrimExProgram(CGLSLPrimitiveExProgram *pProgram, class CGLSLCompiler *pCompiler, class IStorage *pStorage, bool Textured, bool Rotationless);
 
    bool IsNewApi() override { return true; }
 
    void UseProgram(CGLSLTWProgram *pProgram);
    void UploadStreamBufferData(unsigned int PrimitiveType, const void *pVertices, size_t VertSize, unsigned int PrimitiveCount, bool AsTex3D = false);
    void RenderText(const CCommandBuffer::SState &State, int DrawNum, int TextTextureIndex, int TextOutlineTextureIndex, int TextureSize, const ColorRGBA &TextColor, const ColorRGBA &TextOutlineColor);
 
    void TextureUpdate(int Slot, int X, int Y, int Width, int Height, int GLFormat, uint8_t *pTexData);
    void TextureCreate(int Slot, int Width, int Height, int GLFormat, int GLStoreFormat, int Flags, uint8_t *pTexData);
 
    bool Cmd_Init(const SCommand_Init *pCommand) override;
    void Cmd_Shutdown(const SCommand_Shutdown *pCommand) override;
    void Cmd_Texture_Destroy(const CCommandBuffer::SCommand_Texture_Destroy *pCommand) override;
    void Cmd_Texture_Create(const CCommandBuffer::SCommand_Texture_Create *pCommand) override;
    void Cmd_TextTexture_Update(const CCommandBuffer::SCommand_TextTexture_Update *pCommand) override;
    void Cmd_TextTextures_Destroy(const CCommandBuffer::SCommand_TextTextures_Destroy *pCommand) override;
    void Cmd_TextTextures_Create(const CCommandBuffer::SCommand_TextTextures_Create *pCommand) override;
    void Cmd_Clear(const CCommandBuffer::SCommand_Clear *pCommand) override;
    void Cmd_Render(const CCommandBuffer::SCommand_Render *pCommand) override;
    void Cmd_RenderTex3D(const CCommandBuffer::SCommand_RenderTex3D *pCommand) override;
 
    void Cmd_CreateBufferObject(const CCommandBuffer::SCommand_CreateBufferObject *pCommand) override;
    void Cmd_RecreateBufferObject(const CCommandBuffer::SCommand_RecreateBufferObject *pCommand) override;
    void Cmd_UpdateBufferObject(const CCommandBuffer::SCommand_UpdateBufferObject *pCommand) override;
    void Cmd_CopyBufferObject(const CCommandBuffer::SCommand_CopyBufferObject *pCommand) override;
    void Cmd_DeleteBufferObject(const CCommandBuffer::SCommand_DeleteBufferObject *pCommand) override;
 
    void Cmd_CreateBufferContainer(const CCommandBuffer::SCommand_CreateBufferContainer *pCommand) override;
    void Cmd_UpdateBufferContainer(const CCommandBuffer::SCommand_UpdateBufferContainer *pCommand) override;
    void Cmd_DeleteBufferContainer(const CCommandBuffer::SCommand_DeleteBufferContainer *pCommand) override;
    void Cmd_IndicesRequiredNumNotify(const CCommandBuffer::SCommand_IndicesRequiredNumNotify *pCommand) override;
 
    void Cmd_RenderTileLayer(const CCommandBuffer::SCommand_RenderTileLayer *pCommand) override;
    void Cmd_RenderBorderTile(const CCommandBuffer::SCommand_RenderBorderTile *pCommand) override;
    void Cmd_RenderQuadLayer(const CCommandBuffer::SCommand_RenderQuadLayer *pCommand) override;
    void Cmd_RenderText(const CCommandBuffer::SCommand_RenderText *pCommand) override;
    void Cmd_RenderQuadContainer(const CCommandBuffer::SCommand_RenderQuadContainer *pCommand) override;
    void Cmd_RenderQuadContainerEx(const CCommandBuffer::SCommand_RenderQuadContainerEx *pCommand) override;
    void Cmd_RenderQuadContainerAsSpriteMultiple(const CCommandBuffer::SCommand_RenderQuadContainerAsSpriteMultiple *pCommand) override;
 
public:
    CCommandProcessorFragment_OpenGL3_3() = default;
};
 
#endif