tdfx_context.h

Mesa is an open-source implementation of the OpenGL specification - a system for rendering interacti

                               FxU8 detail_scale, float detail_max );
   void (*grTexFilterMode)( GrChipID_t tmu,
                            GrTextureFilterMode_t minfilter_mode,
                            GrTextureFilterMode_t magfilter_mode );
   void (*grTexLodBiasValue)(GrChipID_t tmu, float bias );
   void (*grTexDownloadMipMap)( GrChipID_t tmu, FxU32 startAddress,
                                FxU32 evenOdd, GrTexInfo *info );
   void (*grTexDownloadMipMapLevel)( GrChipID_t        tmu,
                                     FxU32             startAddress,
                                     GrLOD_t           thisLod,
                                     GrLOD_t           largeLod,
                                     GrAspectRatio_t   aspectRatio,
                                     GrTextureFormat_t format,
                                     FxU32             evenOdd,
                                     void              *data );
   FxBool (*grTexDownloadMipMapLevelPartial)( GrChipID_t        tmu,
                                              FxU32             startAddress,
                                              GrLOD_t           thisLod,
                                              GrLOD_t           largeLod,
                                              GrAspectRatio_t   aspectRatio,
                                              GrTextureFormat_t format,
                                              FxU32             evenOdd,
                                              void              *data,
                                              int               start,
                                              int               end );
   void (*grTexDownloadTable)( GrTexTable_t type, void *data );
   void (*grTexDownloadTablePartial)( GrTexTable_t type, 
                                      void *data, int start, int end );
   void (*grTexMipMapMode)( GrChipID_t tmu, GrMipMapMode_t mode,
                            FxBool lodBlend );
   void (*grTexMultibase)( GrChipID_t tmu, FxBool enable );
   void (*grTexMultibaseAddress)( GrChipID_t       tmu,
                                  GrTexBaseRange_t range,
                                  FxU32            startAddress,
                                  FxU32            evenOdd,
                                  GrTexInfo        *info );
   FxBool (*grLfbLock)( GrLock_t type, GrBuffer_t buffer,
                        GrLfbWriteMode_t writeMode,
                        GrOriginLocation_t origin, FxBool pixelPipeline, 
                        GrLfbInfo_t *info );
   FxBool (*grLfbUnlock)( GrLock_t type, GrBuffer_t buffer );
   void (*grLfbConstantAlpha)( GrAlpha_t alpha );
   void (*grLfbConstantDepth)( FxU32 depth );
   void (*grLfbWriteColorSwizzle)(FxBool swizzleBytes, FxBool swapWords);
   void (*grLfbWriteColorFormat)(GrColorFormat_t colorFormat);
   FxBool (*grLfbWriteRegion)( GrBuffer_t dst_buffer, 
                               FxU32 dst_x, FxU32 dst_y, 
                               GrLfbSrcFmt_t src_format, 
                               FxU32 src_width, FxU32 src_height, 
                               FxBool pixelPipeline,
                               FxI32 src_stride, void *src_data );
   FxBool (*grLfbReadRegion)( GrBuffer_t src_buffer,
                              FxU32 src_x, FxU32 src_y,
                              FxU32 src_width, FxU32 src_height,
                              FxU32 dst_stride, void *dst_data );
   void (*grGlideInit)( void );
   void (*grGlideShutdown)( void );
   void (*grGlideGetState)( void *state );
   void (*grGlideSetState)( const void *state );
   void (*grGlideGetVertexLayout)( void *layout );
   void (*grGlideSetVertexLayout)( const void *layout );
   /* Glide utility functions */
   void (*guFogGenerateExp)( GrFog_t *fogtable, float density );
   void (*guFogGenerateExp2)( GrFog_t *fogtable, float density );
   void (*guFogGenerateLinear)(GrFog_t *fogtable, float nearZ, float farZ );
   /* DRI functions */
   void (*grDRIOpen)( char *pFB, char *pRegs, int deviceID,
                      int width, int height,
                      int mem, int cpp, int stride,
                      int fifoOffset, int fifoSize,
                      int fbOffset, int backOffset, int depthOffset,
                      int textureOffset, int textureSize,
                      volatile int *fifoPtr, volatile int *fifoRead );
   void (*grDRIPosition)( int x, int y, int w, int h,
                          int numClip, drm_clip_rect_t *pClip );
   void (*grDRILostContext)( void );
   void (*grDRIImportFifo)( int fifoPtr, int fifoRead );
   void (*grDRIInvalidateAll)( void );
   void (*grDRIResetSAREA)( void );
   void (*grDRIBufferSwap)( FxU32 swapInterval );
   /* Glide extensions */
   /* PIXEXT extension */
   void (*grStencilFunc)( GrCmpFnc_t func, GrStencil_t ref, GrStencil_t mask );
   void (*grStencilMask)( GrStencil_t mask );
   void (*grStencilOp)( GrStencilOp_t fail, GrStencilOp_t zfail,
                        GrStencilOp_t zpass );
   void (*grBufferClearExt)( GrColor_t color, GrAlpha_t alpha,
                             FxU32 depth, GrStencil_t stencil );
   void (*grColorMaskExt)( FxBool r, FxBool g, FxBool b, FxBool a );
   /* COMBINE extension */
   void (*grColorCombineExt)( GrCCUColor_t a, GrCombineMode_t a_mode,
                              GrCCUColor_t b, GrCombineMode_t b_mode,
                              GrCCUColor_t c, FxBool c_invert,
                              GrCCUColor_t d, FxBool d_invert,
                              FxU32 shift, FxBool invert );
   void (*grTexColorCombineExt)( FxU32 tmu,
                                 GrTCCUColor_t a, GrCombineMode_t a_mode,
                                 GrTCCUColor_t b, GrCombineMode_t b_mode,
                                 GrTCCUColor_t c, FxBool c_invert,
                                 GrTCCUColor_t d, FxBool d_invert,
                                 FxU32 shift, FxBool invert );
   void (*grAlphaCombineExt)( GrACUColor_t a, GrCombineMode_t a_mode,
                              GrACUColor_t b, GrCombineMode_t b_mode,
                              GrACUColor_t c, FxBool c_invert,
                              GrACUColor_t d, FxBool d_invert,
                              FxU32 shift, FxBool invert );
   void (*grTexAlphaCombineExt)( FxU32 tmu,
                                 GrTACUColor_t a, GrCombineMode_t a_mode,
                                 GrTACUColor_t b, GrCombineMode_t b_mode,
                                 GrTACUColor_t c, FxBool c_invert,
                                 GrTACUColor_t d, FxBool d_invert,
                                 FxU32 shift, FxBool invert );
   void (*grAlphaBlendFunctionExt)( GrAlphaBlendFnc_t rgb_sf,
                                    GrAlphaBlendFnc_t rgb_df,
                                    GrAlphaBlendOp_t rgb_op,
                                    GrAlphaBlendFnc_t alpha_sf,
                                    GrAlphaBlendFnc_t alpha_df,
                                    GrAlphaBlendOp_t alpha_op );
   void (*grConstantColorValueExt)( FxU32 tmu, GrColor_t value );
   /* Texus 2 */
   void (*txImgQuantize)( void *xxx_unknown_arguments );
   void (*txImgDequantizeFXT1)( void *txMip, void *pxMip );
   void (*txErrorSetCallback)( void *fnc );
};

typedef void (*tdfx_tri_func)( tdfxContextPtr, tdfxVertex *, tdfxVertex *,
			       tdfxVertex * );
typedef void (*tdfx_line_func)( tdfxContextPtr, tdfxVertex *, tdfxVertex * );
typedef void (*tdfx_point_func)( tdfxContextPtr, tdfxVertex * );

struct tdfx_context {
   /* Set once and never changed:
    */
   GLcontext *glCtx;			/* The core Mesa context */

   GLuint new_gl_state;
   GLuint new_state;
   GLuint dirty;

   /* Mirror of hardware state, Glide parameters
    */
   GLuint tmu_source[TDFX_NUM_TMU];
   struct tdfx_texsource	TexSource[TDFX_NUM_TMU];
   struct tdfx_texparams	TexParams[TDFX_NUM_TMU];
   struct tdfx_texpalette	TexPalette;

   /* Voodoo3 texture/color combine state */
   struct tdfx_combine		ColorCombine;
   struct tdfx_combine		AlphaCombine;
   struct tdfx_texcombine	TexCombine[TDFX_NUM_TMU];

   /* Voodoo5 texture/color combine state */
   struct tdfx_combine_color_ext	ColorCombineExt;
   struct tdfx_combine_alpha_ext	AlphaCombineExt;
   struct tdfx_texcombine_ext		TexCombineExt[TDFX_NUM_TMU];

   /* Tracks tex state difference between Glide and Mesa */
   struct tdfx_texstate		TexState;

   GrBuffer_t		DrawBuffer;	/* Current draw buffer */
   GrBuffer_t		ReadBuffer;	/* Current read buffer */

   struct tdfx_color	Color;
   struct tdfx_depth	Depth;
   struct tdfx_fog	Fog;
   struct tdfx_stencil	Stencil;
   struct tdfx_scissor	Scissor;
   struct tdfx_viewport	Viewport;
   struct tdfx_stipple	Stipple;

   GrCullMode_t		CullMode;

   struct tdfx_glide	Glide;

   /* Fallback rasterization functions 
    */
   tdfx_point_func draw_point;
   tdfx_line_func draw_line;
   tdfx_tri_func draw_triangle;


   /* Variable-size Glide vertex formats
    */
   GLuint vertexFormat;		/* the current format */
   void *layout[TDFX_NUM_LAYOUTS];
   tdfxVertex *verts;
   
   GLfloat hw_viewport[16];
   
   GLuint SetupIndex;
   GLuint SetupNewInputs;
   GLuint RenderIndex;
   GLuint Fallback;
   GLenum render_primitive;	/* what GL thinks */
   GLenum raster_primitive;	/* what the hardware thinks */

   GLfloat sScale0, tScale0;
   GLfloat sScale1, tScale1;

   GLuint texBindNumber;
   GLint tmuSrc;

   int screen_width;
   int screen_height;

   GLboolean haveTwoTMUs;      /* True if we have 2 tmu's  */
   GLboolean haveHwAlpha;
   GLboolean haveHwStencil;
   GLboolean haveHwStipple;

   GLint maxPendingSwapBuffers;

   char rendererString[100];

   /* stuff added for DRI */
   __DRIscreenPrivate *driScreen;
   __DRIcontextPrivate *driContext;

   /**
    * DRI drawable bound to this context for drawing.
    */
   __DRIdrawablePrivate	*driDrawable;

   /**
    * DRI drawable bound to this context for reading.
    */
   __DRIdrawablePrivate	*driReadable;

   drm_context_t hHWContext;
   drm_hw_lock_t *driHwLock;
   int driFd;
   tdfxScreenPrivate *fxScreen;
   TDFXSAREAPriv *sarea;


   /*
    * Changes during execution:
    */
   int width, height;   /* size of window */
   int x_offset;        /* distance from window left to screen left */
   int y_offset;        /* distance from window top to screen top */
   int y_delta;         /* distance from window bottom to screen bottom */

   int numClipRects;
   drm_clip_rect_t *pClipRects;
   GLboolean scissoredClipRects;  /* if true, pClipRects is private storage */

   GuTexPalette glbPalette;         /* global texture palette */

   tdfxStats stats;

   /* Configuration cache
    */
   driOptionCache optionCache;
};

#define TDFX_CONTEXT(ctx)	((tdfxContextPtr)((ctx)->DriverCtx))


extern GLboolean
tdfxCreateContext( const __GLcontextModes *mesaVis,
                   __DRIcontextPrivate *driContextPriv,
                   void *sharedContextPrivate );

extern void
tdfxDestroyContext( __DRIcontextPrivate *driContextPriv );

extern GLboolean
tdfxUnbindContext( __DRIcontextPrivate *driContextPriv );

extern GLboolean
tdfxMakeCurrent( __DRIcontextPrivate *driContextPriv,
                 __DRIdrawablePrivate *driDrawPriv,
                 __DRIdrawablePrivate *driReadPriv );

extern GLboolean
tdfxInitGlide( tdfxContextPtr tmesa );

extern void
FX_grColorMaskv(GLcontext *ctx, const GLboolean rgba[4]);

extern void
FX_grColorMaskv_NoLock(GLcontext *ctx, const GLboolean rgba[4]);


/* Color packing utilities
 */
#define TDFXPACKCOLOR332( r, g, b )					   \
   (((b) & 0xe0) | (((g) & 0xe0) >> 3) | (((r) & 0xc0) >> 6))

#define TDFXPACKCOLOR1555( r, g, b, a )					   \
   ((((r) & 0xf8) << 7) | (((g) & 0xf8) << 2) | (((b) & 0xf8) >> 3) |	   \
    ((a) ? 0x8000 : 0))

#define TDFXPACKCOLOR565( r, g, b )					   \
   ((((r) & 0xf8) << 8) | (((g) & 0xfc) << 3) | (((b) & 0xf8) >> 3))

#define TDFXPACKCOLOR888( r, g, b )					   \
   (((b) << 16) | ((g) << 8) | (r))

#define TDFXPACKCOLOR8888( r, g, b, a )					   \
   (((a) << 24) | ((r) << 16) | ((g) << 8) | (b))

#define TDFXPACKCOLOR4444( r, g, b, a )					   \
   ((((a) & 0xf0) << 8) | (((b) & 0xf0) << 4) | ((g) & 0xf0) | ((r) >> 4))

static INLINE GrColor_t tdfxPackColor( GLuint cpp,
                                       GLubyte r, GLubyte g,
                                       GLubyte b, GLubyte a )
{
   switch ( cpp ) {
   case 2:
      return TDFXPACKCOLOR565( r, g, b );
   case 4:
      return TDFXPACKCOLOR8888( r, g, b, a );
   default:
      return 0;
  }
}

#define DO_DEBUG		1
#if DO_DEBUG
extern int TDFX_DEBUG;
#else
#define TDFX_DEBUG		0
#endif

#define DEBUG_ALWAYS_SYNC	0x01
#define DEBUG_VERBOSE_API	0x02
#define DEBUG_VERBOSE_DRI	0x04
#define DEBUG_VERBOSE_FALL	0x08

/* conf */
#define FX_COMPRESS_S3TC_AS_FXT1_HACK 1
#define FX_TC_NAPALM 0

#endif /* __TDFX_CONTEXT_H__ */