t_dd_vbtmp.h

winNT技术操作系统,国外开放的原代码和LIUX一样

#endif

static void TAG(emit)( GLcontext *ctx, GLuint start, GLuint end,
		       void *dest, GLuint stride )
{
   LOCALVARS
      struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb;
   GLfloat (*col)[4];
   GLuint col_stride, col_size;
   GLfloat (*coord)[4] = VB->NdcPtr->data;
   GLuint coord_stride = VB->NdcPtr->stride;
   GLfloat *v = (GLfloat *)dest;
   const GLubyte *mask = VB->ClipMask;
   const GLfloat *s = GET_VIEWPORT_MAT();
   int i;

   (void) s;

   ASSERT(stride == 4);

   col = VB->ColorPtr[0]->data;
   col_stride = VB->ColorPtr[0]->stride;
   col_size = VB->ColorPtr[0]->size;

/*     fprintf(stderr, "%s(small) importable %x\n",  */
/*  	   __FUNCTION__, VB->importable_data); */

   /* Pack what's left into a 4-dword vertex.  Color is in a different
    * place, and there is no 'w' coordinate.
    */
   if (start) {
      STRIDE_4F(coord, start * coord_stride);
      STRIDE_4F(col, start * col_stride);
   }

   for (i=start; i < end; i++, v+=4) {
      if (DO_XYZW) {
	 if (HAVE_HW_VIEWPORT || mask[i] == 0) {
	    VIEWPORT_X(v[0], coord[0][0]);
	    VIEWPORT_Y(v[1], coord[0][1]);
	    VIEWPORT_Z(v[2], coord[0][2]);
	 }
	 STRIDE_4F( coord, coord_stride );
      }
      if (DO_RGBA) {
	 VERTEX_COLOR *c = (VERTEX_COLOR *)&v[3];
	 UNCLAMPED_FLOAT_TO_UBYTE(c->red, col[0][0]);
	 UNCLAMPED_FLOAT_TO_UBYTE(c->green, col[0][1]);
	 UNCLAMPED_FLOAT_TO_UBYTE(c->blue, col[0][2]);
	 if (col_size == 4) {
	    UNCLAMPED_FLOAT_TO_UBYTE(c->alpha, col[0][3]);
	 } else {
	    c->alpha = CHAN_MAX;
	 }
	 STRIDE_4F( col, col_stride );
      }
/*  	 fprintf(stderr, "vert %d: %.2f %.2f %.2f %x\n",  */
/*  		 i, v[0], v[1], v[2], *(int *)&v[3]); */
   }
}

#endif /* emit */

#if (DO_XYZW) && (DO_RGBA)


#if (HAVE_PTEX_VERTICES)
static GLboolean TAG(check_tex_sizes)( GLcontext *ctx )
{
   LOCALVARS
   struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb;

   /* Force 'missing' texcoords to something valid.
    */
   if (DO_TEX3 && VB->TexCoordPtr[2] == 0)
      VB->TexCoordPtr[2] = VB->TexCoordPtr[3];

   if (DO_TEX2 && VB->TexCoordPtr[1] == 0)
      VB->TexCoordPtr[1] = VB->TexCoordPtr[2];

   if (DO_TEX1 && VB->TexCoordPtr[0] == 0)
      VB->TexCoordPtr[0] = VB->TexCoordPtr[1];

   if (DO_PTEX)
      return GL_TRUE;
   
   if ((DO_TEX3 && VB->TexCoordPtr[GET_TEXSOURCE(3)]->size == 4) ||
       (DO_TEX2 && VB->TexCoordPtr[GET_TEXSOURCE(2)]->size == 4) ||
       (DO_TEX1 && VB->TexCoordPtr[GET_TEXSOURCE(1)]->size == 4) ||
       (DO_TEX0 && VB->TexCoordPtr[GET_TEXSOURCE(0)]->size == 4))
      return GL_FALSE;

   return GL_TRUE;
}
#else
static GLboolean TAG(check_tex_sizes)( GLcontext *ctx )
{
   LOCALVARS
   struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb;

   /* Force 'missing' texcoords to something valid.
    */
   if (DO_TEX3 && VB->TexCoordPtr[2] == 0)
      VB->TexCoordPtr[2] = VB->TexCoordPtr[3];

   if (DO_TEX2 && VB->TexCoordPtr[1] == 0)
      VB->TexCoordPtr[1] = VB->TexCoordPtr[2];

   if (DO_TEX1 && VB->TexCoordPtr[0] == 0)
      VB->TexCoordPtr[0] = VB->TexCoordPtr[1];

   if (DO_PTEX)
      return GL_TRUE;

   /* No hardware support for projective texture.  Can fake it for
    * TEX0 only.
    */
   if ((DO_TEX3 && VB->TexCoordPtr[GET_TEXSOURCE(3)]->size == 4) ||
       (DO_TEX2 && VB->TexCoordPtr[GET_TEXSOURCE(2)]->size == 4) ||
       (DO_TEX1 && VB->TexCoordPtr[GET_TEXSOURCE(1)]->size == 4)) {
      PTEX_FALLBACK();
      return GL_FALSE;
   }

   if (DO_TEX0 && VB->TexCoordPtr[GET_TEXSOURCE(0)]->size == 4) {
      if (DO_TEX1 || DO_TEX2 || DO_TEX3) {
	 PTEX_FALLBACK();
      }
      return GL_FALSE;
   }

   return GL_TRUE;
}
#endif /* ptex */


static void TAG(interp)( GLcontext *ctx,
			 GLfloat t,
			 GLuint edst, GLuint eout, GLuint ein,
			 GLboolean force_boundary )
{
   LOCALVARS
   struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb;
   GLubyte *ddverts = GET_VERTEX_STORE();
   GLuint size = GET_VERTEX_SIZE();
   const GLfloat *dstclip = VB->ClipPtr->data[edst];
   GLfloat w;
   const GLfloat *s = GET_VIEWPORT_MAT();

   VERTEX *dst = (VERTEX *)(ddverts + (edst * size));
   VERTEX *in  = (VERTEX *)(ddverts + (ein * size));
   VERTEX *out = (VERTEX *)(ddverts + (eout * size));

   (void)s;

   if (HAVE_HW_DIVIDE && CHECK_HW_DIVIDE) {
      VIEWPORT_X( dst->v.x, dstclip[0] );
      VIEWPORT_Y( dst->v.y, dstclip[1] );
      VIEWPORT_Z( dst->v.z, dstclip[2] );
      w = dstclip[3];
   }
   else {
      w = 1.0 / dstclip[3];
      VIEWPORT_X( dst->v.x, dstclip[0] * w );
      VIEWPORT_Y( dst->v.y, dstclip[1] * w );
      VIEWPORT_Z( dst->v.z, dstclip[2] * w );
   }

   if ((HAVE_HW_DIVIDE && CHECK_HW_DIVIDE) || 
       DO_FOG || DO_SPEC || DO_TEX0 || DO_TEX1 ||
       DO_TEX2 || DO_TEX3 || !HAVE_TINY_VERTICES) {

      dst->v.w = w;

      INTERP_UB( t, dst->ub4[4][0], out->ub4[4][0], in->ub4[4][0] );
      INTERP_UB( t, dst->ub4[4][1], out->ub4[4][1], in->ub4[4][1] );
      INTERP_UB( t, dst->ub4[4][2], out->ub4[4][2], in->ub4[4][2] );
      INTERP_UB( t, dst->ub4[4][3], out->ub4[4][3], in->ub4[4][3] );

      if (DO_SPEC) {
	 INTERP_UB( t, dst->v.specular.red,   out->v.specular.red,   in->v.specular.red );
	 INTERP_UB( t, dst->v.specular.green, out->v.specular.green, in->v.specular.green );
	 INTERP_UB( t, dst->v.specular.blue,  out->v.specular.blue,  in->v.specular.blue );
      }
      if (DO_FOG) {
	 INTERP_UB( t, dst->v.specular.alpha, out->v.specular.alpha, in->v.specular.alpha );
      }
      if (DO_TEX0) {
	 if (DO_PTEX) {
	    if (HAVE_PTEX_VERTICES) {
	       INTERP_F( t, dst->pv.u0, out->pv.u0, in->pv.u0 );
	       INTERP_F( t, dst->pv.v0, out->pv.v0, in->pv.v0 );
	       INTERP_F( t, dst->pv.q0, out->pv.q0, in->pv.q0 );
	    } else {
	       GLfloat wout = VB->NdcPtr->data[eout][3];
	       GLfloat win = VB->NdcPtr->data[ein][3];
	       GLfloat qout = out->pv.w / wout;
	       GLfloat qin = in->pv.w / win;
	       GLfloat qdst, rqdst;

	       ASSERT( !HAVE_HW_DIVIDE );

	       INTERP_F( t, dst->v.u0, out->v.u0 * qout, in->v.u0 * qin );
	       INTERP_F( t, dst->v.v0, out->v.v0 * qout, in->v.v0 * qin );
	       INTERP_F( t, qdst, qout, qin );

	       rqdst = 1.0 / qdst;
	       dst->v.u0 *= rqdst;
	       dst->v.v0 *= rqdst;
	       dst->v.w *= rqdst;
	    }
	 }
	 else {
	    INTERP_F( t, dst->v.u0, out->v.u0, in->v.u0 );
	    INTERP_F( t, dst->v.v0, out->v.v0, in->v.v0 );
	 }
      }
      if (DO_TEX1) {
	 if (DO_PTEX) {
	    INTERP_F( t, dst->pv.u1, out->pv.u1, in->pv.u1 );
	    INTERP_F( t, dst->pv.v1, out->pv.v1, in->pv.v1 );
	    INTERP_F( t, dst->pv.q1, out->pv.q1, in->pv.q1 );
	 } else {
	    INTERP_F( t, dst->v.u1, out->v.u1, in->v.u1 );
	    INTERP_F( t, dst->v.v1, out->v.v1, in->v.v1 );
	 }
      }
      else if (DO_PTEX) {
	 dst->pv.q1 = 0.0;	/* must be a valid float on radeon */
      }
      if (DO_TEX2) {
	 if (DO_PTEX) {
	    INTERP_F( t, dst->pv.u2, out->pv.u2, in->pv.u2 );
	    INTERP_F( t, dst->pv.v2, out->pv.v2, in->pv.v2 );
	    INTERP_F( t, dst->pv.q2, out->pv.q2, in->pv.q2 );
	 } else {
	    INTERP_F( t, dst->v.u2, out->v.u2, in->v.u2 );
	    INTERP_F( t, dst->v.v2, out->v.v2, in->v.v2 );
	 }
      }
      if (DO_TEX3) {
	 if (DO_PTEX) {
	    INTERP_F( t, dst->pv.u3, out->pv.u3, in->pv.u3 );
	    INTERP_F( t, dst->pv.v3, out->pv.v3, in->pv.v3 );
	    INTERP_F( t, dst->pv.q3, out->pv.q3, in->pv.q3 );
	 } else {
	    INTERP_F( t, dst->v.u3, out->v.u3, in->v.u3 );
	    INTERP_F( t, dst->v.v3, out->v.v3, in->v.v3 );
	 }
      }
   } else {
      /* 4-dword vertex.  Color is in v[3] and there is no oow coordinate.
       */
      INTERP_UB( t, dst->ub4[3][0], out->ub4[3][0], in->ub4[3][0] );
      INTERP_UB( t, dst->ub4[3][1], out->ub4[3][1], in->ub4[3][1] );
      INTERP_UB( t, dst->ub4[3][2], out->ub4[3][2], in->ub4[3][2] );
      INTERP_UB( t, dst->ub4[3][3], out->ub4[3][3], in->ub4[3][3] );
   }
}

#endif /* rgba && xyzw */


static void TAG(init)( void )
{
   setup_tab[IND].emit = TAG(emit);

#if (DO_XYZW && DO_RGBA)
   setup_tab[IND].check_tex_sizes = TAG(check_tex_sizes);
   setup_tab[IND].interp = TAG(interp);
#endif

   if (DO_SPEC)
      setup_tab[IND].copy_pv = copy_pv_rgba4_spec5;
   else if (HAVE_HW_DIVIDE || DO_SPEC || DO_FOG || DO_TEX0 || DO_TEX1 ||
	    DO_TEX2 || DO_TEX3 || !HAVE_TINY_VERTICES)
      setup_tab[IND].copy_pv = copy_pv_rgba4;
   else
      setup_tab[IND].copy_pv = copy_pv_rgba3;

   if (DO_TEX3) {
      if (DO_PTEX) {
	 ASSERT(HAVE_PTEX_VERTICES);
	 setup_tab[IND].vertex_format = PROJ_TEX3_VERTEX_FORMAT;
	 setup_tab[IND].vertex_size = 18;
      }
      else {
	 setup_tab[IND].vertex_format = TEX3_VERTEX_FORMAT;
	 setup_tab[IND].vertex_size = 14;
      }
   }
   else if (DO_TEX2) {
      if (DO_PTEX) {
	 ASSERT(HAVE_PTEX_VERTICES);
	 setup_tab[IND].vertex_format = PROJ_TEX3_VERTEX_FORMAT;
	 setup_tab[IND].vertex_size = 18;
      }
      else {
	 setup_tab[IND].vertex_format = TEX2_VERTEX_FORMAT;
	 setup_tab[IND].vertex_size = 12;
      }
   }
   else if (DO_TEX1) {
      if (DO_PTEX) {
	 ASSERT(HAVE_PTEX_VERTICES);
	 setup_tab[IND].vertex_format = PROJ_TEX1_VERTEX_FORMAT;
	 setup_tab[IND].vertex_size = 12;
      }
      else {
	 setup_tab[IND].vertex_format = TEX1_VERTEX_FORMAT;
	 setup_tab[IND].vertex_size = 10;
      }
   }
   else if (DO_TEX0) {
      if (DO_PTEX && HAVE_PTEX_VERTICES) {
	 setup_tab[IND].vertex_format = PROJ_TEX1_VERTEX_FORMAT;
	 setup_tab[IND].vertex_size = 12;
      } else {
	 setup_tab[IND].vertex_format = TEX0_VERTEX_FORMAT;
	 setup_tab[IND].vertex_size = 8;
      }
   }
   else if (!HAVE_HW_DIVIDE && !DO_SPEC && !DO_FOG && HAVE_TINY_VERTICES) {
      setup_tab[IND].vertex_format = TINY_VERTEX_FORMAT;
      setup_tab[IND].vertex_size = 4;
   } else if (HAVE_NOTEX_VERTICES) {
      setup_tab[IND].vertex_format = NOTEX_VERTEX_FORMAT;
      setup_tab[IND].vertex_size = 6;
   } else {
      setup_tab[IND].vertex_format = TEX0_VERTEX_FORMAT;
      setup_tab[IND].vertex_size = 8;
   }
}


#undef IND
#undef TAG