glsl_shader_compiler.h

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#ifndef ENGINE_CLIENT_BACKEND_GLSL_SHADER_COMPILER_H
#define ENGINE_CLIENT_BACKEND_GLSL_SHADER_COMPILER_H
 
#include <string>
#include <vector>
 
class CGLSLCompiler
{
    friend class CGLSL;
 
public:
    enum class EShaderType
    {
        VERTEX,
        FRAGMENT,
    };
 
    enum class ETextureReplaceType
    {
        TEXTURE_2D,
        TEXTURE_3D,
        TEXTURE_2D_ARRAY,
    };
 
    CGLSLCompiler(int OpenGLVersionMajor, int OpenGLVersionMinor, int OpenGLVersionPatch, bool IsOpenGLES, float TextureLODBias);
    void SetHasTextureArray(bool TextureArray) { m_HasTextureArray = TextureArray; }
    void SetTextureReplaceType(ETextureReplaceType TextureReplaceType) { m_TextureReplaceType = TextureReplaceType; }
 
    void AddDefine(const char *pDefineName, const char *pDefineValue);
    void ClearDefines();
 
    void ParseLine(std::string &Line, const char *pReadLine, EShaderType Type) const;
 
private:
    void ParseLineOldOpenGL(std::string &Line, const char *pReadLine, EShaderType Type) const;
    void ParseLineGLES(std::string &Line, const char *pReadLine) const;
 
    class CDefine
    {
    public:
        CDefine(const char *pDefineName, const char *pDefineValue)
        {
            m_DefineName = pDefineName;
            m_DefineValue = pDefineValue;
        }
        std::string m_DefineName;
        std::string m_DefineValue;
    };
 
    std::vector<CDefine> m_vDefines;
 
    int m_OpenGLVersionMajor;
    int m_OpenGLVersionMinor;
    int m_OpenGLVersionPatch;
 
    bool m_IsOpenGLES;
 
    float m_TextureLODBias;
 
    bool m_HasTextureArray;
    ETextureReplaceType m_TextureReplaceType;
};
 
#endif