Rice Video Plugin for GLES1.1

[mupen64plus-pandora.git] / source / rice_gles / src / OGLExtCombiner.h

diff --git a/source/rice_gles/src/OGLExtCombiner.h b/source/rice_gles/src/OGLExtCombiner.h
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+/*
+Copyright (C) 2003 Rice1964
+
+This program is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public License
+as published by the Free Software Foundation; either version 2
+of the License, or (at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+*/
+
+#ifndef _OGLEXT_COMBINER_H_
+#define _OGLEXT_COMBINER_H_
+
+#include <vector>
+
+#include "osal_opengl.h"
+
+#include "OGLCombiner.h"
+#include "GeneralCombiner.h"
+
+typedef union 
+{
+    struct {
+        uint8   arg0;
+        uint8   arg1;
+        uint8   arg2;
+    };
+    uint8 args[3];
+} OGLExt1CombType;
+
+typedef struct {
+    union {
+        struct {
+            GLenum  rgbOp;
+            GLenum  alphaOp;
+        };
+        GLenum ops[2];
+    };
+
+    union {
+        struct {
+            uint8   rgbArg0;
+            uint8   rgbArg1;
+            uint8   rgbArg2;
+            uint8   alphaArg0;
+            uint8   alphaArg1;
+            uint8   alphaArg2;
+        };
+        struct {
+            OGLExt1CombType rgbComb;
+            OGLExt1CombType alphaComb;
+        };
+        OGLExt1CombType Combs[2];
+    };
+
+    union {
+        struct {
+            GLint   rgbArg0gl;
+            GLint   rgbArg1gl;
+            GLint   rgbArg2gl;
+        };
+        GLint glRGBArgs[3];
+    };
+
+    union {
+        struct {
+            GLint   rgbFlag0gl;
+            GLint   rgbFlag1gl;
+            GLint   rgbFlag2gl;
+        };
+        GLint glRGBFlags[3];
+    };
+
+    union {
+        struct {
+            GLint   alphaArg0gl;
+            GLint   alphaArg1gl;
+            GLint   alphaArg2gl;
+        };
+        GLint glAlphaArgs[3];
+    };
+
+    union {
+        struct {
+            GLint   alphaFlag0gl;
+            GLint   alphaFlag1gl;
+            GLint   alphaFlag2gl;
+        };
+        GLint glAlphaFlags[3];
+    };
+
+    int     tex;
+    bool    textureIsUsed;
+    //float scale;      //Will not be used
+} OGLExtCombinerType;
+
+typedef struct {
+    uint32  dwMux0;
+    uint32  dwMux1;
+    OGLExtCombinerType units[8];
+    int     numOfUnits;
+    uint32  constantColor;
+
+    // For 1.4 v2 combiner
+    bool    primIsUsed;
+    bool    envIsUsed;
+    bool    lodFracIsUsed;
+} OGLExtCombinerSaveType;
+
+
+//========================================================================
+// OpenGL 1.4 combiner which support Texture Crossbar feature
+class COGLColorCombiner4 : public COGLColorCombiner
+{
+public:
+    bool Initialize(void);
+protected:
+    friend class OGLDeviceBuilder;
+    void InitCombinerCycle12(void);
+    void InitCombinerCycleFill(void);
+    virtual void GenerateCombinerSetting(int index);
+    virtual void GenerateCombinerSettingConstants(int index);
+    virtual int ParseDecodedMux();
+
+    COGLColorCombiner4(CRender *pRender);
+    ~COGLColorCombiner4() {};
+
+    bool m_bOGLExtCombinerSupported;        // Is this OGL extension combiner supported by the video card driver?
+    bool m_bSupportModAdd_ATI;
+    bool m_bSupportModSub_ATI;
+    GLint m_maxTexUnits;
+    int m_lastIndex;
+    uint32 m_dwLastMux0;
+    uint32 m_dwLastMux1;
+
+#ifdef DEBUGGER
+    void DisplaySimpleMuxString(void);
+#endif
+
+protected:
+    virtual int SaveParsedResult(OGLExtCombinerSaveType &result);
+    static GLint MapRGBArgFlags(uint8 arg);
+    static GLint MapAlphaArgFlags(uint8 arg);
+    std::vector<OGLExtCombinerSaveType>     m_vCompiledSettings;
+    static GLint RGBArgsMap4[];
+    static const char* GetOpStr(GLenum op);
+
+private:
+    virtual int ParseDecodedMux2Units();
+    virtual int FindCompiledMux();
+
+    virtual GLint MapRGBArgs(uint8 arg);
+    virtual GLint MapAlphaArgs(uint8 arg);
+};
+
+
+class COGLColorCombiner4v2 : public COGLColorCombiner4
+{
+    /************************************************************************
+     * Version 2 of OGL 1.4 combiner
+     * Will support up to 4 texture units
+     * Texture unit 0 and 1 are for N64 texture T0 and T1
+     * Texture unit 2 and 3 will be used to map constant colors
+     * Constant color mapping:
+     *    OGL constant factor:      MUX_PRIM
+     *    ARB_TEXTURE2:             MUX_ENV
+     *    ARB_TEXTURE3:             MUX_LODFRAC
+     ************************************************************************/
+protected:
+    friend class OGLDeviceBuilder;
+    virtual void GenerateCombinerSettingConstants(int index);
+    virtual int SaveParsedResult(OGLExtCombinerSaveType &result);
+
+    COGLColorCombiner4v2(CRender *pRender);
+    ~COGLColorCombiner4v2() {};
+
+    static GLint RGBArgsMap4v2[];
+
+private:
+    virtual GLint MapRGBArgs(uint8 arg);
+    virtual GLint MapAlphaArgs(uint8 arg);
+};
+
+//////////////////////////////////////////////////////////////////////////
+// OpenGL 1.2, 1.3 combiner which does not support Texture Crossbar feature
+class COGLColorCombiner2 : public COGLColorCombiner4, CGeneralCombiner
+{
+public:
+    bool Initialize(void);
+
+#ifdef DEBUGGER
+    void DisplaySimpleMuxString(void);
+#endif
+
+protected:
+    friend class OGLDeviceBuilder;
+
+    COGLColorCombiner2(CRender *pRender);
+    ~COGLColorCombiner2() {};
+
+private:
+    virtual int ParseDecodedMux();
+    virtual void GenerateCombinerSetting(int index);
+    virtual void GenerateCombinerSettingConstants(int index);
+
+    virtual GLint MapRGBArgs(uint8 arg);
+    virtual GLint MapAlphaArgs(uint8 arg);
+    static GLint RGBArgsMap2[];
+};
+
+
+#endif
+