tdfx_render.c

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

                                           fxMesa->Color.ClearAlpha,
                                           fxMesa->Depth.Clear,
                                           (FxU32) (ctx->Stencil.Clear & 0xff));
	 else
            fxMesa->Glide.grBufferClear(fxMesa->Color.ClearColor,
                                        fxMesa->Color.ClearAlpha,
                                        fxMesa->Depth.Clear);
	 FX_grColorMaskv_NoLock(ctx, true4);
	 if (ctx->DrawBuffer->_ColorDrawBufferIndexes[0] == BUFFER_FRONT_LEFT)
            fxMesa->Glide.grRenderBuffer(GR_BUFFER_FRONTBUFFER);
	 if (!ctx->Depth.Test || !ctx->Depth.Mask)
	    fxMesa->Glide.grDepthMask(FXFALSE);
	 break;
      default:
         /* clear no color buffers or depth buffer but might clear stencil */
	 if (stencil_size > 0 && (mask & BUFFER_BIT_STENCIL)) {
            /* XXX need this RenderBuffer call to work around Glide bug */
            fxMesa->Glide.grRenderBuffer(GR_BUFFER_BACKBUFFER);
            fxMesa->Glide.grDepthMask(FXFALSE);
            FX_grColorMaskv_NoLock(ctx, false4);
            fxMesa->Glide.grBufferClearExt(fxMesa->Color.ClearColor,
                                           fxMesa->Color.ClearAlpha,
                                           fxMesa->Depth.Clear,
                                           (FxU32) (ctx->Stencil.Clear & 0xff));
            if (ctx->Depth.Mask && ctx->Depth.Test) {
               fxMesa->Glide.grDepthMask(FXTRUE);
            }
            FX_grColorMaskv_NoLock(ctx, true4);
            if (ctx->DrawBuffer->_ColorDrawBufferIndexes[0] == BUFFER_FRONT_LEFT)
               fxMesa->Glide.grRenderBuffer(GR_BUFFER_FRONTBUFFER);
         }
      }
   }
   END_CLIP_LOOP(fxMesa);

   if (fxMesa->haveHwStencil && (mask & BUFFER_BIT_STENCIL)) {
      /* We changed the stencil state above.  Signal that we need to
       * upload it again.
       */
      fxMesa->dirty |= TDFX_UPLOAD_STENCIL;
   }

   if (softwareMask)
      _swrast_Clear(ctx, softwareMask);
}



static void tdfxFinish( GLcontext *ctx )
{
   tdfxContextPtr fxMesa = TDFX_CONTEXT(ctx);

   FLUSH_BATCH( fxMesa );

   LOCK_HARDWARE( fxMesa );
   fxMesa->Glide.grFinish();
   UNLOCK_HARDWARE( fxMesa );
}

static void tdfxFlush( GLcontext *ctx )
{
   tdfxContextPtr fxMesa = TDFX_CONTEXT(ctx);

   FLUSH_BATCH( fxMesa );

   LOCK_HARDWARE( fxMesa );
   fxMesa->Glide.grFlush();
   UNLOCK_HARDWARE( fxMesa );
}


#if 0
static const char *texSource(int k)
{
   switch (k) {
      case GR_CMBX_ZERO:
         return "GR_CMBX_ZERO";
      case GR_CMBX_TEXTURE_ALPHA:
         return "GR_CMBX_TEXTURE_ALPHA";
      case GR_CMBX_ALOCAL:
         return "GR_CMBX_ALOCAL";
      case GR_CMBX_AOTHER:
         return "GR_CMBX_AOTHER";
      case GR_CMBX_B:
         return "GR_CMBX_B";
      case GR_CMBX_CONSTANT_ALPHA:
         return "GR_CMBX_CONSTANT_ALPHA";
      case GR_CMBX_CONSTANT_COLOR:
         return "GR_CMBX_CONSTANT_COLOR";
      case GR_CMBX_DETAIL_FACTOR:
         return "GR_CMBX_DETAIL_FACTOR";
      case GR_CMBX_ITALPHA:
         return "GR_CMBX_ITALPHA";
      case GR_CMBX_ITRGB:
         return "GR_CMBX_ITRGB";
      case GR_CMBX_LOCAL_TEXTURE_ALPHA:
         return "GR_CMBX_LOCAL_TEXTURE_ALPHA";
      case GR_CMBX_LOCAL_TEXTURE_RGB:
         return "GR_CMBX_LOCAL_TEXTURE_RGB";
      case GR_CMBX_LOD_FRAC:
         return "GR_CMBX_LOD_FRAC";
      case GR_CMBX_OTHER_TEXTURE_ALPHA:
         return "GR_CMBX_OTHER_TEXTURE_ALPHA";
      case GR_CMBX_OTHER_TEXTURE_RGB:
         return "GR_CMBX_OTHER_TEXTURE_RGB";
      case GR_CMBX_TEXTURE_RGB:
         return "GR_CMBX_TEXTURE_RGB";
      case GR_CMBX_TMU_CALPHA:
         return "GR_CMBX_TMU_CALPHA";
      case GR_CMBX_TMU_CCOLOR:
         return "GR_CMBX_TMU_CCOLOR";
      default:
         return "";
   }
}
#endif

#if 0
static const char *texMode(int k)
{
   switch (k) {
      case GR_FUNC_MODE_ZERO:
         return "GR_FUNC_MODE_ZERO";
      case GR_FUNC_MODE_X:
         return "GR_FUNC_MODE_X";
      case GR_FUNC_MODE_ONE_MINUS_X:
         return "GR_FUNC_MODE_ONE_MINUS_X";
      case GR_FUNC_MODE_NEGATIVE_X:
         return "GR_FUNC_MODE_NEGATIVE_X";
      case GR_FUNC_MODE_X_MINUS_HALF:
         return "GR_FUNC_MODE_X_MINUS_HALF";
      default:
         return "";
   }
}
#endif

#if 0
static const char *texInvert(int k)
{
   return k ? "FXTRUE" : "FXFALSE";
}
#endif

static void uploadTextureEnv( tdfxContextPtr fxMesa )
{
   if (TDFX_IS_NAPALM(fxMesa)) {
      int unit;
      for (unit = 0; unit < TDFX_NUM_TMU; unit++) {
#if 0
         printf("upload env %d\n", unit);
         printf("   cSourceA = %s\t", texSource(fxMesa->TexCombineExt[unit].Color.SourceA));
         printf("     cModeA = %s\n", texMode(fxMesa->TexCombineExt[unit].Color.ModeA));
         printf("   cSourceB = %s\t", texSource(fxMesa->TexCombineExt[unit].Color.SourceB));
         printf("     cModeB = %s\n", texMode(fxMesa->TexCombineExt[unit].Color.ModeB));
         printf("   cSourceC = %s\t", texSource(fxMesa->TexCombineExt[unit].Color.SourceC));
         printf("   cInvertC = %s\n", texInvert(fxMesa->TexCombineExt[unit].Color.InvertC));
         printf("   cSourceD = %s\t", texSource(fxMesa->TexCombineExt[unit].Color.SourceD));
         printf("   cInvertD = %s\n", texInvert(fxMesa->TexCombineExt[unit].Color.InvertD));
         printf("     cShift = %d\t", fxMesa->TexCombineExt[unit].Color.Shift);
         printf("    cInvert = %d\n", fxMesa->TexCombineExt[unit].Color.Invert);
         printf("   aSourceA = %s\t", texSource(fxMesa->TexCombineExt[unit].Alpha.SourceA));
         printf("     aModeA = %s\n", texMode(fxMesa->TexCombineExt[unit].Alpha.ModeA));
         printf("   aSourceB = %s\t", texSource(fxMesa->TexCombineExt[unit].Alpha.SourceB));
         printf("     aModeB = %s\n", texMode(fxMesa->TexCombineExt[unit].Alpha.ModeB));
         printf("   aSourceC = %s\t", texSource(fxMesa->TexCombineExt[unit].Alpha.SourceC));
         printf("   aInvertC = %s\n", texInvert(fxMesa->TexCombineExt[unit].Alpha.InvertC));
         printf("   aSourceD = %s\t", texSource(fxMesa->TexCombineExt[unit].Alpha.SourceD));
         printf("   aInvertD = %s\n", texInvert(fxMesa->TexCombineExt[unit].Alpha.InvertD));
         printf("     aShift = %d\t", fxMesa->TexCombineExt[unit].Alpha.Shift);
         printf("    aInvert = %d\n", fxMesa->TexCombineExt[unit].Alpha.Invert);
         printf("      Color = 0x%08x\n", fxMesa->TexCombineExt[unit].EnvColor);
#endif
         fxMesa->Glide.grTexColorCombineExt(TDFX_TMU0 + unit,
                                     fxMesa->TexCombineExt[unit].Color.SourceA,
                                     fxMesa->TexCombineExt[unit].Color.ModeA,
                                     fxMesa->TexCombineExt[unit].Color.SourceB,
                                     fxMesa->TexCombineExt[unit].Color.ModeB,
                                     fxMesa->TexCombineExt[unit].Color.SourceC,
                                     fxMesa->TexCombineExt[unit].Color.InvertC,
                                     fxMesa->TexCombineExt[unit].Color.SourceD,
                                     fxMesa->TexCombineExt[unit].Color.InvertD,
                                     fxMesa->TexCombineExt[unit].Color.Shift,
                                     fxMesa->TexCombineExt[unit].Color.Invert);
         fxMesa->Glide.grTexAlphaCombineExt(TDFX_TMU0 + unit,
                                     fxMesa->TexCombineExt[unit].Alpha.SourceA,
                                     fxMesa->TexCombineExt[unit].Alpha.ModeA,
                                     fxMesa->TexCombineExt[unit].Alpha.SourceB,
                                     fxMesa->TexCombineExt[unit].Alpha.ModeB,
                                     fxMesa->TexCombineExt[unit].Alpha.SourceC,
                                     fxMesa->TexCombineExt[unit].Alpha.InvertC,
                                     fxMesa->TexCombineExt[unit].Alpha.SourceD,
                                     fxMesa->TexCombineExt[unit].Alpha.InvertD,
                                     fxMesa->TexCombineExt[unit].Alpha.Shift,
                                     fxMesa->TexCombineExt[unit].Alpha.Invert);
         fxMesa->Glide.grConstantColorValueExt(TDFX_TMU0 + unit,
                                        fxMesa->TexCombineExt[unit].EnvColor);
      }
   }
   else {
      /* Voodoo3 */
      int unit;
      for (unit = 0; unit < TDFX_NUM_TMU; unit++) {
         struct tdfx_texcombine *comb = &fxMesa->TexCombine[unit];
         fxMesa->Glide.grTexCombine(TDFX_TMU0 + unit,
                                    comb->FunctionRGB,
                                    comb->FactorRGB,
                                    comb->FunctionAlpha,
                                    comb->FactorAlpha,
                                    comb->InvertRGB,
                                    comb->InvertAlpha);
      }
   }
}


static void uploadTextureParams( tdfxContextPtr fxMesa )
{
   int unit;
   for (unit = 0; unit < TDFX_NUM_TMU; unit++) {
      const struct tdfx_texparams *p = &fxMesa->TexParams[unit];
      /*
      printf("upload params %d\n", unit);
      printf("   clamp %x %x\n", env->sClamp, env->tClamp);
      printf("   filter %x %x\n", env->minFilt, env->magFilt);
      printf("   mipmap %x %x\n", env->mmMode, env->LODblend);
      printf("   lod bias %f\n", env->LodBias);
      */
      fxMesa->Glide.grTexClampMode(GR_TMU0 + unit, p->sClamp, p->tClamp);
      fxMesa->Glide.grTexFilterMode(GR_TMU0 + unit, p->minFilt, p->magFilt);
      fxMesa->Glide.grTexMipMapMode(GR_TMU0 + unit, p->mmMode, p->LODblend);
      fxMesa->Glide.grTexLodBiasValue(GR_TMU0 + unit, CLAMP(p->LodBias, -8, 7.75));
   }
}


static void uploadTextureSource( tdfxContextPtr fxMesa )
{
   int unit;
   for (unit = 0; unit < TDFX_NUM_TMU; unit++) {
      const struct tdfx_texsource *src = &fxMesa->TexSource[unit];
      /*
      printf("upload source %d @ %d %p\n", unit, src->StartAddress, src->Info);
      */
      if (src->Info) {
         /*
         printf("  smallLodLog2=%d largeLodLog2=%d ar=%d format=%d data=%p\n",
                src->Info->smallLodLog2, src->Info->largeLodLog2,
                src->Info->aspectRatioLog2, src->Info->format,
                src->Info->data);
         */
         fxMesa->Glide.grTexSource(GR_TMU0 + unit,
                                   src->StartAddress,
                                   src->EvenOdd,
                                   src->Info);
      }
   }
}


static void uploadTextureImages( tdfxContextPtr fxMesa )
{
   GLcontext *ctx = fxMesa->glCtx;
   int unit;
   for (unit = 0; unit < TDFX_NUM_TMU; unit++) {
      if (ctx->Texture.Unit[unit]._ReallyEnabled & (TEXTURE_1D_BIT|TEXTURE_2D_BIT)) {
         struct gl_texture_object *tObj = ctx->Texture.Unit[unit]._Current;
         tdfxTexInfo *ti = TDFX_TEXTURE_DATA(tObj);
         if (ti && ti->reloadImages && ti->whichTMU != TDFX_TMU_NONE) {