opengl_sl_program.h

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// This file can be included several times.
#if (!defined(BACKEND_AS_OPENGL_ES) && !defined(ENGINE_CLIENT_BACKEND_OPENGL_OPENGL_SL_PROGRAM_H)) || \
    (defined(BACKEND_AS_OPENGL_ES) && !defined(ENGINE_CLIENT_BACKEND_OPENGL_OPENGL_SL_PROGRAM_H_AS_ES))
 
#if !defined(BACKEND_AS_OPENGL_ES) && !defined(ENGINE_CLIENT_BACKEND_OPENGL_OPENGL_SL_PROGRAM_H)
#define ENGINE_CLIENT_BACKEND_OPENGL_OPENGL_SL_PROGRAM_H
#endif
 
#if defined(BACKEND_AS_OPENGL_ES) && !defined(ENGINE_CLIENT_BACKEND_OPENGL_OPENGL_SL_PROGRAM_H_AS_ES)
#define ENGINE_CLIENT_BACKEND_OPENGL_OPENGL_SL_PROGRAM_H_AS_ES
#endif
 
#include <base/color.h>
#include <base/vmath.h>
 
#include <engine/client/graphics_defines.h>
 
class CGLSL;
 
class CGLSLProgram
{
public:
    void CreateProgram();
    void DeleteProgram();
 
    bool AddShader(CGLSL *pShader) const;
 
    bool LinkProgram();
    void UseProgram() const;
    TWGLuint GetProgramId() const;
 
    void DetachShader(CGLSL *pShader) const;
    void DetachShaderById(TWGLuint ShaderId) const;
    void DetachAllShaders() const;
 
    //Support various types
    void SetUniformVec2(int Loc, int Count, const float *pValue);
    void SetUniformVec4(int Loc, int Count, const float *pValue);
    void SetUniform(int Loc, int Value);
    void SetUniform(int Loc, bool Value);
    void SetUniform(int Loc, float Value);
    void SetUniform(int Loc, int Count, const float *pValues);
 
    //for performance reason we do not use SetUniform with using strings... save the Locations of the variables instead
    int GetUniformLoc(const char *pName) const;
 
    CGLSLProgram();
    virtual ~CGLSLProgram();
 
protected:
    TWGLuint m_ProgramId;
    bool m_IsLinked;
};
 
class CGLSLTWProgram : public CGLSLProgram
{
public:
    CGLSLTWProgram() :
        m_LocPos(-1), m_LocTextureSampler(-1), m_LastTextureSampler(-1), m_LastIsTextured(-1)
    {
        m_LastScreenTL = m_LastScreenBR = vec2(-1, -1);
    }
 
    int m_LocPos;
    int m_LocTextureSampler;
 
    int m_LastTextureSampler;
    int m_LastIsTextured;
    vec2 m_LastScreenTL;
    vec2 m_LastScreenBR;
};
 
class CGLSLTextProgram : public CGLSLTWProgram
{
public:
    CGLSLTextProgram()
 
    {
        m_LastColor[0] = m_LastColor[1] = m_LastColor[2] = m_LastColor[3] = -1.f;
        m_LastOutlineColor[0] = m_LastOutlineColor[1] = m_LastOutlineColor[2] = m_LastOutlineColor[3] = -1.f;
        m_LastTextSampler = m_LastTextOutlineSampler = -1;
        m_LastTextureSize = -1;
    }
 
    int m_LocColor;
    int m_LocOutlineColor;
    int m_LocTextSampler;
    int m_LocTextOutlineSampler;
    int m_LocTextureSize;
 
    ColorRGBA m_LastColor;
    ColorRGBA m_LastOutlineColor;
    int m_LastTextSampler;
    int m_LastTextOutlineSampler;
    int m_LastTextureSize;
};
 
class CGLSLPrimitiveProgram : public CGLSLTWProgram
{
public:
};
 
class CGLSLPrimitiveExProgram : public CGLSLTWProgram
{
public:
    CGLSLPrimitiveExProgram()
 
    {
        m_LastRotation = 0.f;
        m_LastCenter = vec2(0, 0);
        m_LastVerticesColor = ColorRGBA(-1, -1, -1, -1);
    }
 
    int m_LocRotation;
    int m_LocCenter;
    int m_LocVertciesColor;
 
    float m_LastRotation;
    vec2 m_LastCenter;
    ColorRGBA m_LastVerticesColor;
};
 
class CGLSLSpriteMultipleProgram : public CGLSLTWProgram
{
public:
    CGLSLSpriteMultipleProgram()
 
    {
        m_LastCenter = vec2(0, 0);
        m_LastVerticesColor = ColorRGBA(-1, -1, -1, -1);
    }
 
    int m_LocRSP;
    int m_LocCenter;
    int m_LocVertciesColor;
 
    vec2 m_LastCenter;
    ColorRGBA m_LastVerticesColor;
};
 
class CGLSLQuadProgram : public CGLSLTWProgram
{
public:
    int m_LocColors;
    int m_LocOffsets;
    int m_LocRotations;
    int m_LocQuadOffset;
};
 
class CGLSLTileProgram : public CGLSLTWProgram
{
public:
    CGLSLTileProgram() :
        m_LocColor(-1), m_LocOffset(-1), m_LocDir(-1), m_LocNum(-1), m_LocJumpIndex(-1) {}
 
    int m_LocColor;
    int m_LocOffset;
    int m_LocDir;
    int m_LocScale = -1;
    int m_LocNum;
    int m_LocJumpIndex;
};
 
#endif