173 lines
6.4 KiB
C
173 lines
6.4 KiB
C
//**************************************************************
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//* OpenGLide - Glide to OpenGL Wrapper
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//* http://openglide.sourceforge.net
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//*
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//* Render Header
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//*
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//* OpenGLide is OpenSource under LGPL license
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//* Originaly made by Fabio Barros
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//* Modified by Paul for Glidos (http://www.glidos.net)
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//* Mac version and additional features by Jens-Olaf Hemprich
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//**************************************************************
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#ifndef __GLRENDER_H__
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#define __GLRENDER_H__
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//**************************************************************
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// Structs
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//**************************************************************
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struct GlVertex
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{
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GLfloat x, y, z;
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GLfloat s, t, q, oow;
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GLfloat r, g, b, a;
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GLfloat r2, g2, b2, a2;
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GLfloat f;
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};
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struct Triangle
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{
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GlVertex a, b, c;
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};
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struct ColorStruct
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{
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GLfloat r, g, b, a;
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};
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struct TColorStruct
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{
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GLfloat ar, ag, ab, aa;
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GLfloat br, bg, bb, ba;
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GLfloat cr, cg, cb, ca;
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};
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struct TVertexStruct
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{
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GLfloat ax, ay, az, aw;
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GLfloat bx, by, bz, bw;
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GLfloat cx, cy, cz, cw;
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};
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struct TTextureStruct
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{
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GLfloat as, at, aq, aoow;
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GLfloat bs, bt, bq, boow;
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GLfloat cs, ct, cq, coow;
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};
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struct TFogStruct
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{
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GLfloat af;
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GLfloat bf;
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GLfloat cf;
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};
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struct RenderStruct
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{
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static const int RenderBufferSize = 512;
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static const int FrameBufferStartIndex = RenderBufferSize + 1;
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TColorStruct *TColor;
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TColorStruct *TColor2;
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TVertexStruct *TVertex;
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TTextureStruct *TTexture;
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TFogStruct *TFog;
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long NumberOfTriangles;
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bool UseEnvCombineFog;
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bool BufferLocked;
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FxU32 BufferLockedStart;
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FxU32 BufferStart;
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#ifdef OGL_DEBUG
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float MinX, MinY, MinZ, MinW;
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float MaxX, MaxY, MaxZ, MaxW;
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float MinS, MinT, MaxS, MaxT;
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float MinR, MinG, MinB, MinA;
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float MaxR, MaxG, MaxB, MaxA;
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float MaxF, MinF;
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unsigned long FrameTriangles, MaxTriangles, MaxSequencedTriangles;
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unsigned long OverallTriangles, OverallRenderTriangleCalls;
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unsigned long OverallLines;
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unsigned long OverallPoints;
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#endif
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};
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typedef float (*ALPHAFACTORFUNCPROC)( float LocalAlpha, float OtherAlpha );
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typedef void (*COLORFACTORFUNCPROC)( TColorStruct *Result, const TColorStruct *ColorComponent, const TColorStruct *OtherAlpha );
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typedef void (*COLORFUNCTIONPROC)( TColorStruct * pC, TColorStruct * pC2, const TColorStruct * Local, const TColorStruct * Other );
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//**************************************************************
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// Function Prototypes
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//**************************************************************
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// Main Render functions
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void RenderInitialize( void );
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void RenderFree( void );
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void RenderAddTriangle( const GrVertex *a, const GrVertex *b, const GrVertex *c, bool unsnap );
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void RenderAddLine( const GrVertex *a, const GrVertex *b, bool unsnap );
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void RenderAddPoint( const GrVertex *a, bool unsnap );
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void RenderDrawTriangles_impl(void);
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extern RenderStruct OGLRender;
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void RenderInitialize( void );
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void RenderFree( void );
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inline void RenderDrawTriangles(void)
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{
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// Save the call if there's nothing to do
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if (OGLRender.NumberOfTriangles)
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{
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RenderDrawTriangles_impl();
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}
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}
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inline void RenderUnlockArrays()
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{
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glReportErrors("RenderUnlockArrays");
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if (OGLRender.BufferLocked)
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{
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glUnlockArraysEXT();
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glReportError();
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OGLRender.BufferLocked = false;
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}
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};
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// Main Render variables
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// extern RenderStruct OGLRender;
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extern ALPHAFACTORFUNCPROC AlphaFactorFunc;
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extern COLORFACTORFUNCPROC ColorFactor3Func;
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extern COLORFUNCTIONPROC ColorFunctionFunc;
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// Prototypes for the color combining
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float AlphaFactorZero( float LocalAlpha, float OtherAlpha );
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float AlphaFactorLocal( float LocalAlpha, float OtherAlpha );
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float AlphaFactorOther( float LocalAlpha, float OtherAlpha );
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float AlphaFactorOneMinusLocal( float LocalAlpha, float OtherAlpha );
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float AlphaFactorOneMinusOther( float LocalAlpha, float OtherAlpha );
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float AlphaFactorOne( float LocalAlpha, float OtherAlpha );
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void ColorFactor3Zero( TColorStruct *Result, const TColorStruct *ColorComponent, const TColorStruct *OtherAlpha );
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void ColorFactor3Local( TColorStruct *Result, const TColorStruct *ColorComponent, const TColorStruct *OtherAlpha );
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void ColorFactor3LocalAlpha( TColorStruct *Result, const TColorStruct *ColorComponent, const TColorStruct *OtherAlpha );
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void ColorFactor3OneMinusLocal( TColorStruct *Result, const TColorStruct *ColorComponent, const TColorStruct *OtherAlpha );
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void ColorFactor3OneMinusLocalAlpha( TColorStruct *Result, const TColorStruct *ColorComponent, const TColorStruct *OtherAlpha );
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void ColorFactor3OtherAlpha( TColorStruct *Result, const TColorStruct *ColorComponent, const TColorStruct *OtherAlpha );
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void ColorFactor3OneMinusOtherAlpha( TColorStruct *Result, const TColorStruct *ColorComponent, const TColorStruct *OtherAlpha );
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void ColorFactor3One( TColorStruct *Result, const TColorStruct *ColorComponent, const TColorStruct *OtherAlpha );
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void ColorFunctionZero( TColorStruct * pC, TColorStruct * pC2, const TColorStruct * Local, const TColorStruct * Other );
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void ColorFunctionLocal( TColorStruct * pC, TColorStruct * pC2, const TColorStruct * Local, const TColorStruct * Other );
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void ColorFunctionLocalAlpha( TColorStruct * pC, TColorStruct * pC2, const TColorStruct * Local, const TColorStruct * Other );
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void ColorFunctionScaleOther( TColorStruct * pC, TColorStruct * pC2, const TColorStruct * Local, const TColorStruct * Other );
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void ColorFunctionScaleOtherAddLocal( TColorStruct * pC, TColorStruct * pC2, const TColorStruct * Local, const TColorStruct * Other );
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void ColorFunctionScaleOtherAddLocalAlpha( TColorStruct * pC, TColorStruct * pC2, const TColorStruct * Local, const TColorStruct * Other );
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void ColorFunctionScaleOtherMinusLocal( TColorStruct * pC, TColorStruct * pC2, const TColorStruct * Local, const TColorStruct * Other );
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void ColorFunctionScaleOtherMinusLocalAddLocal( TColorStruct * pC, TColorStruct * pC2, const TColorStruct * Local, const TColorStruct * Other );
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void ColorFunctionScaleOtherMinusLocalAddLocalAlpha( TColorStruct * pC, TColorStruct * pC2, const TColorStruct * Local, const TColorStruct * Other );
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void ColorFunctionMinusLocalAddLocal( TColorStruct * pC, TColorStruct * pC2, const TColorStruct * Local, const TColorStruct * Other );
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void ColorFunctionMinusLocalAddLocalAlpha( TColorStruct * pC, TColorStruct * pC2, const TColorStruct * Local, const TColorStruct * Other );
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#endif |