src/mesa/drivers/dri/ffb/ffb_vbtmp.h

   1 /* $XFree86: xc/lib/GL/mesa/src/drv/ffb/ffb_vbtmp.h,v 1.1 2002/02/22 21:32:59 dawes Exp $ */
   2
   3 static void TAG(emit)(GLcontext *ctx, GLuint start, GLuint end)
   4 {
   5         ffbContextPtr fmesa = FFB_CONTEXT(ctx);
   6 #if defined(VB_DEBUG) || (IND & (FFB_VB_XYZ_BIT | FFB_VB_RGBA_BIT))
   7         struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb;
   8 #endif
   9 #if (IND & (FFB_VB_RGBA_BIT))
  10         GLfloat (*col0)[4];
  11         GLuint col0_stride;
  12 #if (IND & (FFB_VB_TWOSIDE_BIT))
  13         GLfloat (*col1)[4];
  14         GLuint col1_stride;
  15 #endif
  16 #endif
  17 #if (IND & FFB_VB_XYZ_BIT)
  18         GLfloat (*proj)[4] = VB->NdcPtr->data;
  19         GLuint proj_stride = VB->NdcPtr->stride;
  20         const GLubyte *mask = VB->ClipMask;
  21 #endif
  22         ffb_vertex *v = &fmesa->verts[start];
  23         int i;
  24
  25 #ifdef VB_DEBUG
  26         fprintf(stderr, "FFB: ffb_emit ["
  27 #if (IND & (FFB_VB_XYZ_BIT))
  28                 " XYZ"
  29 #endif
  30 #if (IND & (FFB_VB_RGBA_BIT))
  31                 " RGBA"
  32 #endif
  33 #if (IND & (FFB_VB_TWOSIDE_BIT))
  34                 " TWOSIDE"
  35 #endif
  36                 "] start(%d) end(%d) import(%d)\n",
  37                 start, end,
  38                 VB->importable_data);
  39 #endif
  40
  41 #if (IND & (FFB_VB_RGBA_BIT))
  42         col0 = VB->ColorPtr[0]->data;
  43         col0_stride = VB->ColorPtr[0]->stride;
  44 #if (IND & (FFB_VB_TWOSIDE_BIT))
  45         col1 = VB->ColorPtr[1]->data;
  46         col1_stride = VB->ColorPtr[1]->stride;
  47 #endif
  48 #endif
  49
  50         {
  51                 if (start) {
  52 #if (IND & (FFB_VB_XYZ_BIT))
  53                         proj = (GLfloat (*)[4])((GLubyte *)proj + start * proj_stride);
  54 #endif
  55 #if (IND & (FFB_VB_RGBA_BIT))
  56                         col0 = (GLfloat (*)[4])((GLubyte *)col0 + start * col0_stride);
  57 #if (IND & (FFB_VB_TWOSIDE_BIT))
  58                         col1 = (GLfloat (*)[4])((GLubyte *)col1 + start * col1_stride);
  59 #endif
  60 #endif
  61                 }
  62                 for (i = start; i < end; i++, v++) {
  63 #if (IND & (FFB_VB_XYZ_BIT))
  64                         if (mask[i] == 0) {
  65                                 v->x = proj[0][0];
  66                                 v->y = proj[0][1];
  67                                 v->z = proj[0][2];
  68                         }
  69                         proj = (GLfloat (*)[4])((GLubyte *)proj + proj_stride);
  70 #endif
  71 #if (IND & (FFB_VB_RGBA_BIT))
  72                         v->color[0].alpha = CLAMP(col0[0][3], 0.0f, 1.0f);
  73                         v->color[0].red   = CLAMP(col0[0][0], 0.0f, 1.0f);
  74                         v->color[0].green = CLAMP(col0[0][1], 0.0f, 1.0f);
  75                         v->color[0].blue  = CLAMP(col0[0][2], 0.0f, 1.0f);
  76                         col0 = (GLfloat (*)[4])((GLubyte *)col0 + col0_stride);
  77 #if (IND & (FFB_VB_TWOSIDE_BIT))
  78                         v->color[1].alpha = CLAMP(col1[0][3], 0.0f, 1.0f);
  79                         v->color[1].red   = CLAMP(col1[0][0], 0.0f, 1.0f);
  80                         v->color[1].green = CLAMP(col1[0][1], 0.0f, 1.0f);
  81                         v->color[1].blue  = CLAMP(col1[0][2], 0.0f, 1.0f);
  82                         col1 = (GLfloat (*)[4])((GLubyte *)col1 + col1_stride);
  83 #endif
  84 #endif
  85                 }
  86         }
  87 }
  88
  89 static void TAG(interp)(GLcontext *ctx, GLfloat t,
  90                         GLuint edst, GLuint eout, GLuint ein,
  91                         GLboolean force_boundary)
  92 {
  93 #if (IND & (FFB_VB_XYZ_BIT | FFB_VB_RGBA_BIT))
  94         ffbContextPtr fmesa = FFB_CONTEXT(ctx);
  95 #endif
  96 #if (IND & (FFB_VB_XYZ_BIT))
  97         struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb;
  98         const GLfloat *dstclip = VB->ClipPtr->data[edst];
  99         GLfloat oow = 1.0 / dstclip[3];
 100 #endif
 101 #if (IND & (FFB_VB_XYZ_BIT | FFB_VB_RGBA_BIT))
 102         ffb_vertex *dst = &fmesa->verts[edst];
 103 #endif
 104 #if (IND & (FFB_VB_RGBA_BIT))
 105         ffb_vertex *in = &fmesa->verts[eout];
 106         ffb_vertex *out = &fmesa->verts[ein];
 107 #endif
 108
 109 #ifdef VB_DEBUG
 110         fprintf(stderr, "FFB: ffb_interp ["
 111 #if (IND & (FFB_VB_XYZ_BIT))
 112                 " XYZ"
 113 #endif
 114 #if (IND & (FFB_VB_RGBA_BIT))
 115                 " RGBA"
 116 #endif
 117 #if (IND & (FFB_VB_TWOSIDE_BIT))
 118                 " TWOSIDE"
 119 #endif
 120                 "] edst(%d) eout(%d) ein(%d)\n",
 121                 edst, eout, ein);
 122 #endif
 123
 124 #if (IND & (FFB_VB_XYZ_BIT))
 125         dst->x = dstclip[0] * oow;
 126         dst->y = dstclip[1] * oow;
 127         dst->z = dstclip[2] * oow;
 128 #endif
 129
 130 #if (IND & (FFB_VB_RGBA_BIT))
 131         INTERP_F(t, dst->color[0].alpha, out->color[0].alpha, in->color[0].alpha);
 132         INTERP_F(t, dst->color[0].red,   out->color[0].red,   in->color[0].red);
 133         INTERP_F(t, dst->color[0].green, out->color[0].green, in->color[0].green);
 134         INTERP_F(t, dst->color[0].blue,  out->color[0].blue,  in->color[0].blue);
 135 #if (IND & (FFB_VB_TWOSIDE_BIT))
 136         INTERP_F(t, dst->color[1].alpha, out->color[1].alpha, in->color[1].alpha);
 137         INTERP_F(t, dst->color[1].red,   out->color[1].red,   in->color[1].red);
 138         INTERP_F(t, dst->color[1].green, out->color[1].green, in->color[1].green);
 139         INTERP_F(t, dst->color[1].blue,  out->color[1].blue,  in->color[1].blue);
 140 #endif
 141 #endif
 142 }
 143
 144 static void TAG(init)(void)
 145 {
 146         setup_tab[IND].emit = TAG(emit);
 147         setup_tab[IND].interp = TAG(interp);
 148 }
 149
 150 #undef IND
 151 #undef TAG