fxsetup.c

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

	    tmu0 = 1;
	    tmu1 = 0;
	 }
	 else {			/* Nothing is loaded */
	    fxTMMoveInTM_NoLock(fxMesa, tObj0, FX_TMU0);
	    fxTMMoveInTM_NoLock(fxMesa, tObj1, FX_TMU1);
	    /* tmu0 and tmu1 are setup */
	 }
      }
   }

   /* [dBorca] Hack alert:
    * we put these in reverse order, so that if we can't
    * do _REAL_ pointcast, the TMU0 table gets broadcasted
    */
   if (!fxMesa->haveGlobalPaletteTexture) {
      /* pointcast */
      if (ti1->info.format == GR_TEXFMT_P_8) {
	 if (TDFX_DEBUG & VERBOSE_DRIVER) {
	    fprintf(stderr, "fxSetupDoubleTMU_NoLock: uploading texture palette for TMU1\n");
	 }
	 fxMesa->Glide.grTexDownloadTableExt(ti1->whichTMU, ti1->paltype, &(ti1->palette));
      }
      if (ti0->info.format == GR_TEXFMT_P_8) {
	 if (TDFX_DEBUG & VERBOSE_DRIVER) {
	    fprintf(stderr, "fxSetupDoubleTMU_NoLock: uploading texture palette for TMU0\n");
	 }
	 fxMesa->Glide.grTexDownloadTableExt(ti0->whichTMU, ti0->paltype, &(ti0->palette));
      }
   }

   grTexSource(tmu0, ti0->tm[tmu0]->startAddr,
			 GR_MIPMAPLEVELMASK_BOTH, &(ti0->info));
   grTexClampMode(tmu0, ti0->sClamp, ti0->tClamp);
   grTexFilterMode(tmu0, ti0->minFilt, ti0->maxFilt);
   grTexMipMapMode(tmu0, ti0->mmMode, FXFALSE);

   grTexSource(tmu1, ti1->tm[tmu1]->startAddr,
			 GR_MIPMAPLEVELMASK_BOTH, &(ti1->info));
   grTexClampMode(tmu1, ti1->sClamp, ti1->tClamp);
   grTexFilterMode(tmu1, ti1->minFilt, ti1->maxFilt);
   grTexMipMapMode(tmu1, ti1->mmMode, FXFALSE);

#undef T0_NOT_IN_TMU
#undef T1_NOT_IN_TMU
#undef T0_IN_TMU0
#undef T1_IN_TMU0
#undef T0_IN_TMU1
#undef T1_IN_TMU1
}

static void
fxSetupTextureDoubleTMU_NoLock(GLcontext * ctx)
{
   fxMesaContext fxMesa = FX_CONTEXT(ctx);
   struct tdfx_combine alphaComb, colorComb;
   struct tdfx_texcombine tex0, tex1;
   GrCombineLocal_t localc, locala;
   tfxTexInfo *ti0, *ti1;
   struct gl_texture_object *tObj0 = ctx->Texture.Unit[1]._Current;
   struct gl_texture_object *tObj1 = ctx->Texture.Unit[0]._Current;
   GLuint envmode, ifmt, unitsmode;
   int tmu0 = 0, tmu1 = 1;

   if (TDFX_DEBUG & VERBOSE_DRIVER) {
      fprintf(stderr, "fxSetupTextureDoubleTMU_NoLock(...)\n");
   }

   ti0 = fxTMGetTexInfo(tObj0);
   fxTexValidate(ctx, tObj0);

   ti1 = fxTMGetTexInfo(tObj1);
   fxTexValidate(ctx, tObj1);

   fxSetupDoubleTMU_NoLock(fxMesa, tObj0, tObj1);

   unitsmode = fxGetTexSetConfiguration(ctx, tObj0, tObj1);

/*    if(fxMesa->lastUnitsMode==unitsmode) */
/*      return; */

   fxMesa->lastUnitsMode = unitsmode;

   fxMesa->stw_hint_state |= GR_STWHINT_ST_DIFF_TMU1;
   FX_grHints_NoLock(GR_HINT_STWHINT, fxMesa->stw_hint_state);

   envmode = unitsmode & FX_UM_E_ENVMODE;
   ifmt = unitsmode & FX_UM_E_IFMT;

   if (unitsmode & FX_UM_ALPHA_ITERATED)
      locala = GR_COMBINE_LOCAL_ITERATED;
   else
      locala = GR_COMBINE_LOCAL_CONSTANT;

   if (unitsmode & FX_UM_COLOR_ITERATED)
      localc = GR_COMBINE_LOCAL_ITERATED;
   else
      localc = GR_COMBINE_LOCAL_CONSTANT;


   if (TDFX_DEBUG & (VERBOSE_DRIVER | VERBOSE_TEXTURE))
      fprintf(stderr, "fxSetupTextureDoubleTMU_NoLock: envmode is %s/%s\n",
	      _mesa_lookup_enum_by_nr(ctx->Texture.Unit[0].EnvMode),
	      _mesa_lookup_enum_by_nr(ctx->Texture.Unit[1].EnvMode));


   if ((ti0->whichTMU == FX_TMU1) || (ti1->whichTMU == FX_TMU0)) {
      tmu0 = 1;
      tmu1 = 0;
   }
   fxMesa->tmuSrc = FX_TMU_BOTH;

   tex0.InvertRGB     = FXFALSE;
   tex0.InvertAlpha   = FXFALSE;
   tex1.InvertRGB     = FXFALSE;
   tex1.InvertAlpha   = FXFALSE;
   alphaComb.Local    = locala;
   alphaComb.Invert   = FXFALSE;
   colorComb.Local    = localc;
   colorComb.Invert   = FXFALSE;

   switch (envmode) {
   case (FX_UM_E0_MODULATE | FX_UM_E1_MODULATE):
      {
	 GLboolean isalpha[FX_NUM_TMU];

	 isalpha[tmu0] = (ti0->baseLevelInternalFormat == GL_ALPHA);
	 isalpha[tmu1] = (ti1->baseLevelInternalFormat == GL_ALPHA);

	 if (isalpha[FX_TMU1]) {
            tex1.FunctionRGB   = GR_COMBINE_FUNCTION_ZERO;
            tex1.FactorRGB     = GR_COMBINE_FACTOR_NONE;
            tex1.FunctionAlpha = GR_COMBINE_FUNCTION_LOCAL;
            tex1.FactorAlpha   = GR_COMBINE_FACTOR_NONE;
            tex1.InvertRGB     = FXTRUE;
	 } else {
            tex1.FunctionRGB   = GR_COMBINE_FUNCTION_LOCAL;
            tex1.FactorRGB     = GR_COMBINE_FACTOR_NONE;
            tex1.FunctionAlpha = GR_COMBINE_FUNCTION_LOCAL;
            tex1.FactorAlpha   = GR_COMBINE_FACTOR_NONE;
         }

	 if (isalpha[FX_TMU0]) {
            tex0.FunctionRGB   = GR_COMBINE_FUNCTION_BLEND_OTHER;
            tex0.FactorRGB     = GR_COMBINE_FACTOR_ONE;
            tex0.FunctionAlpha = GR_COMBINE_FUNCTION_BLEND_OTHER;
            tex0.FactorAlpha   = GR_COMBINE_FACTOR_LOCAL;
	 } else {
            tex0.FunctionRGB   = GR_COMBINE_FUNCTION_BLEND_OTHER;
            tex0.FactorRGB     = GR_COMBINE_FACTOR_LOCAL;
            tex0.FunctionAlpha = GR_COMBINE_FUNCTION_BLEND_OTHER;
            tex0.FactorAlpha   = GR_COMBINE_FACTOR_LOCAL;
         }

         colorComb.Function = GR_COMBINE_FUNCTION_SCALE_OTHER;
         colorComb.Factor   = GR_COMBINE_FACTOR_LOCAL;
         colorComb.Other    = GR_COMBINE_OTHER_TEXTURE;

         alphaComb.Function = GR_COMBINE_FUNCTION_SCALE_OTHER;
         alphaComb.Factor   = GR_COMBINE_FACTOR_LOCAL;
         alphaComb.Other    = GR_COMBINE_OTHER_TEXTURE;
	 break;
      }
   case (FX_UM_E0_REPLACE | FX_UM_E1_BLEND):	/* Only for GLQuake */
      if (tmu0 == FX_TMU1) {
         tex1.FunctionRGB   = GR_COMBINE_FUNCTION_LOCAL;
         tex1.FactorRGB     = GR_COMBINE_FACTOR_NONE;
         tex1.FunctionAlpha = GR_COMBINE_FUNCTION_LOCAL;
         tex1.FactorAlpha   = GR_COMBINE_FACTOR_NONE;
         tex1.InvertRGB     = FXTRUE;

         tex0.FunctionRGB   = GR_COMBINE_FUNCTION_BLEND_OTHER;
         tex0.FactorRGB     = GR_COMBINE_FACTOR_LOCAL;
         tex0.FunctionAlpha = GR_COMBINE_FUNCTION_BLEND_OTHER;
         tex0.FactorAlpha   = GR_COMBINE_FACTOR_LOCAL;
      }
      else {
         tex1.FunctionRGB   = GR_COMBINE_FUNCTION_LOCAL;
         tex1.FactorRGB     = GR_COMBINE_FACTOR_NONE;
         tex1.FunctionAlpha = GR_COMBINE_FUNCTION_LOCAL;
         tex1.FactorAlpha   = GR_COMBINE_FACTOR_NONE;

         tex0.FunctionRGB   = GR_COMBINE_FUNCTION_BLEND_OTHER;
         tex0.FactorRGB     = GR_COMBINE_FACTOR_ONE_MINUS_LOCAL;
         tex0.FunctionAlpha = GR_COMBINE_FUNCTION_BLEND_OTHER;
         tex0.FactorAlpha   = GR_COMBINE_FACTOR_ONE_MINUS_LOCAL;
      }

      alphaComb.Function = GR_COMBINE_FUNCTION_LOCAL;
      alphaComb.Factor   = GR_COMBINE_FACTOR_NONE;
      alphaComb.Other    = GR_COMBINE_OTHER_NONE;

      colorComb.Function = GR_COMBINE_FUNCTION_SCALE_OTHER;
      colorComb.Factor   = GR_COMBINE_FACTOR_ONE;
      colorComb.Other    = GR_COMBINE_OTHER_TEXTURE;
      break;
   case (FX_UM_E0_REPLACE | FX_UM_E1_MODULATE):	/* Quake 2 and 3 */
      if (tmu1 == FX_TMU1) {
         tex1.FunctionRGB   = GR_COMBINE_FUNCTION_LOCAL;
         tex1.FactorRGB     = GR_COMBINE_FACTOR_NONE;
         tex1.FunctionAlpha = GR_COMBINE_FUNCTION_ZERO;
         tex1.FactorAlpha   = GR_COMBINE_FACTOR_NONE;
         tex1.InvertAlpha   = FXTRUE;

         tex0.FunctionRGB   = GR_COMBINE_FUNCTION_BLEND_OTHER;
         tex0.FactorRGB     = GR_COMBINE_FACTOR_LOCAL;
         tex0.FunctionAlpha = GR_COMBINE_FUNCTION_BLEND_OTHER;
         tex0.FactorAlpha   = GR_COMBINE_FACTOR_LOCAL;
      }
      else {
         tex1.FunctionRGB   = GR_COMBINE_FUNCTION_LOCAL;
         tex1.FactorRGB     = GR_COMBINE_FACTOR_NONE;
         tex1.FunctionAlpha = GR_COMBINE_FUNCTION_LOCAL;
         tex1.FactorAlpha   = GR_COMBINE_FACTOR_NONE;

         tex0.FunctionRGB   = GR_COMBINE_FUNCTION_BLEND_OTHER;
         tex0.FactorRGB     = GR_COMBINE_FACTOR_LOCAL;
         tex0.FunctionAlpha = GR_COMBINE_FUNCTION_BLEND_OTHER;
         tex0.FactorAlpha   = GR_COMBINE_FACTOR_ONE;
      }

      if (ti0->baseLevelInternalFormat == GL_RGB) {
         alphaComb.Function = GR_COMBINE_FUNCTION_LOCAL;
         alphaComb.Factor   = GR_COMBINE_FACTOR_NONE;
         alphaComb.Other    = GR_COMBINE_OTHER_NONE;
      } else {
         alphaComb.Function = GR_COMBINE_FUNCTION_SCALE_OTHER;
         alphaComb.Factor   = GR_COMBINE_FACTOR_ONE;
         alphaComb.Other    = GR_COMBINE_OTHER_NONE;
      }

      colorComb.Function = GR_COMBINE_FUNCTION_SCALE_OTHER;
      colorComb.Factor   = GR_COMBINE_FACTOR_ONE;
      colorComb.Other    = GR_COMBINE_OTHER_TEXTURE;
      break;


   case (FX_UM_E0_MODULATE | FX_UM_E1_ADD):	/* Quake 3 Sky */
      {
	 GLboolean isalpha[FX_NUM_TMU];

	 isalpha[tmu0] = (ti0->baseLevelInternalFormat == GL_ALPHA);
	 isalpha[tmu1] = (ti1->baseLevelInternalFormat == GL_ALPHA);

	 if (isalpha[FX_TMU1]) {
            tex1.FunctionRGB   = GR_COMBINE_FUNCTION_ZERO;
            tex1.FactorRGB     = GR_COMBINE_FACTOR_NONE;
            tex1.FunctionAlpha = GR_COMBINE_FUNCTION_LOCAL;
            tex1.FactorAlpha   = GR_COMBINE_FACTOR_NONE;
            tex1.InvertRGB     = FXTRUE;
	 } else {
            tex1.FunctionRGB   = GR_COMBINE_FUNCTION_LOCAL;
            tex1.FactorRGB     = GR_COMBINE_FACTOR_NONE;
            tex1.FunctionAlpha = GR_COMBINE_FUNCTION_LOCAL;
            tex1.FactorAlpha   = GR_COMBINE_FACTOR_NONE;
         }

	 if (isalpha[FX_TMU0]) {
            tex0.FunctionRGB   = GR_COMBINE_FUNCTION_SCALE_OTHER;
            tex0.FactorRGB     = GR_COMBINE_FACTOR_ONE;
            tex0.FunctionAlpha = GR_COMBINE_FUNCTION_SCALE_OTHER_ADD_LOCAL;
            tex0.FactorAlpha   = GR_COMBINE_FACTOR_ONE;
	 } else {
            tex0.FunctionRGB   = GR_COMBINE_FUNCTION_SCALE_OTHER_ADD_LOCAL;
            tex0.FactorRGB     = GR_COMBINE_FACTOR_ONE;
            tex0.FunctionAlpha = GR_COMBINE_FUNCTION_SCALE_OTHER_ADD_LOCAL;
            tex0.FactorAlpha   = GR_COMBINE_FACTOR_ONE;
         }

         colorComb.Function = GR_COMBINE_FUNCTION_SCALE_OTHER;
         colorComb.Factor   = GR_COMBINE_FACTOR_LOCAL;
         colorComb.Other    = GR_COMBINE_OTHER_TEXTURE;

         alphaComb.Function = GR_COMBINE_FUNCTION_SCALE_OTHER;
         alphaComb.Factor   = GR_COMBINE_FACTOR_LOCAL;
         alphaComb.Other    = GR_COMBINE_OTHER_TEXTURE;
	 break;
      }

   case (FX_UM_E0_REPLACE | FX_UM_E1_ADD):	/* Vulpine Sky */
      {
	 GLboolean isalpha[FX_NUM_TMU];

	 isalpha[tmu0] = (ti0->baseLevelInternalFormat == GL_ALPHA);
	 isalpha[tmu1] = (ti1->baseLevelInternalFormat == GL_ALPHA);

	 if (isalpha[FX_TMU1]) {
            tex1.FunctionRGB   = GR_COMBINE_FUNCTION_ZERO;
            tex1.FactorRGB     = GR_COMBINE_FACTOR_NONE;
            tex1.FunctionAlpha = GR_COMBINE_FUNCTION_LOCAL;
            tex1.FactorAlpha   = GR_COMBINE_FACTOR_NONE;
            tex1.InvertRGB     = FXTRUE;
	 } else {
            tex1.FunctionRGB   = GR_COMBINE_FUNCTION_LOCAL;
            tex1.FactorRGB     = GR_COMBINE_FACTOR_NONE;
            tex1.FunctionAlpha = GR_COMBINE_FUNCTION_LOCAL;
            tex1.FactorAlpha   = GR_COMBINE_FACTOR_NONE;
         }

	 if (isalpha[FX_TMU0]) {
            tex0.FunctionRGB   = GR_COMBINE_FUNCTION_SCALE_OTHER;
            tex0.FactorRGB     = GR_COMBINE_FACTOR_ONE;
            tex0.FunctionAlpha = GR_COMBINE_FUNCTION_SCALE_OTHER_ADD_LOCAL;
            tex0.FactorAlpha   = GR_COMBINE_FACTOR_ONE;
	 } else {
            tex0.FunctionRGB   = GR_COMBINE_FUNCTION_SCALE_OTHER_ADD_LOCAL;
            tex0.FactorRGB     = GR_COMBINE_FACTOR_ONE;
            tex0.FunctionAlpha = GR_COMBINE_FUNCTION_SCALE_OTHER_ADD_LOCAL;
            tex0.FactorAlpha   = GR_COMBINE_FACTOR_ONE;
         }

         colorComb.Function = GR_COMBINE_FUNCTION_SCALE_OTHER;
         colorComb.Factor   = GR_COMBINE_FACTOR_ONE;
         colorComb.Other    = GR_COMBINE_OTHER_TEXTURE;

         alphaComb.Function = GR_COMBINE_FUNCTION_SCALE_OTHER;
         alphaComb.Factor   = GR_COMBINE_FACTOR_ONE;
         alphaComb.Other    = GR_COMBINE_OTHER_TEXTURE;
	 break;
      }

   case (FX_UM_E0_MODULATE | FX_UM_E1_REPLACE): /* Homeworld2 */
      {
         tex1.FunctionRGB   = GR_COMBINE_FUNCTION_ZERO;
         tex1.FactorRGB     = GR_COMBINE_FACTOR_NONE;
         tex1.FunctionAlpha = GR_COMBINE_FUNCTION_ZERO;
         tex1.FactorAlpha   = GR_COMBINE_FACTOR_NONE;

         tex0.FunctionRGB   = GR_COMBINE_FUNCTION_LOCAL;
         tex0.FactorRGB     = GR_COMBINE_FACTOR_NONE;
         tex0.FunctionAlpha = GR_COMBINE_FUNCTION_LOCAL;
         tex0.FactorAlpha   = GR_COMBINE_FACTOR_NONE;

         if (ifmt & (FX_UM_E0_RGB | FX_UM_E0_LUMINANCE)) {
            alphaComb.Function = GR_COMBINE_FUNCTION_LOCAL;
            alphaComb.Factor   = GR_COMBINE_FACTOR_NONE;
            alphaComb.Other    = GR_COMBINE_OTHER_NONE;
         } else {
            alphaComb.Function = GR_COMBINE_FUNCTION_SCALE_OTHER;
            alphaComb.Factor   = GR_COMBINE_FACTOR_ONE;
            alphaComb.Other    = GR_COMBINE_OTHER_TEXTURE;
         }

         if (ifmt & FX_UM_E0_ALPHA) {
            colorComb.Function = GR_COMBINE_FUNCTION_LOCAL;
            colorComb.Factor   = GR_COMBINE_FACTOR_NONE;
            colorComb.Other    = GR_COMBINE_OTHER_NONE;
         } else {
            colorComb.Function = GR_COMBINE_FUNCTION_SCALE_OTHER;
            colorComb.Factor   = GR_COMBINE_FACTOR_ONE;
            colorComb.Other    = GR_COMBINE_OTHER_TEXTURE;
         }
         break;
      }
   default:
      fprintf(stderr, "fxSetupTextureDoubleTMU_NoLock: Unexpected dual texture mode encountered\n");
      return;
   }

   grAlphaCombine(alphaComb.Function,
                  alphaComb.Factor,
                  alphaComb.Local,
                  alphaComb.Other,
                  alphaComb.Invert);
   grColorCombine(colorComb.Function,
                  colorComb.Factor,
                  colorComb.Local,
                  colorComb.Other,
                  colorComb.Invert);
   grTexCombine(GR_TMU0,
                tex0.FunctionRGB,
                tex0.FactorRGB,
                tex0.FunctionAlpha,
                tex0.FactorAlpha,
                tex0.InvertRGB,
                tex0.InvertAlpha);
   grTexCombine(GR_TMU1,
                tex1.FunctionRGB,
                tex1.FactorRGB,
                tex1.FunctionAlpha,
                tex1.FactorAlpha,
                tex1.InvertRGB,
                tex1.InvertAlpha);
}

/************************* No Texture ***************************/

static void
fxSetupTextureNone_NoLock(GLcontext * ctx)
{
   fxMesaContext fxMesa = FX_CONTEXT(ctx);
   GrCombineLocal_t localc, locala;

   if (TDFX_DEBUG & VERBOSE_DRIVER) {
      fprintf(stderr, "fxSetupTextureNone_NoLock(...)\n");
   }

   if ((ctx->Light.ShadeModel == GL_SMOOTH) || 1 ||
       (ctx->Point.SmoothFlag) ||
       (ctx->Line.SmoothFlag) ||
       (ctx->Polygon.SmoothFlag)) locala = GR_COMBINE_LOCAL_ITERATED;
   else
      locala = GR_COMBINE_LOCAL_CONSTANT;

   if (ctx->Light.ShadeModel == GL_SMOOTH || 1)
      localc = GR_COMBINE_LOCAL_ITERATED;
   else
      localc = GR_COMBINE_LOCAL_CONSTANT;

   grAlphaCombine(GR_COMBINE_FUNCTION_LOCAL,
                  GR_COMBINE_FACTOR_NONE,
                  locala,
                  GR_COMBINE_OTHER_NONE,
                  FXFALSE);