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         struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb;
   7 #if (IND & (FFB_VB_RGBA_BIT))
   8         GLfloat (*col0)[4];
   9         GLuint col0_stride;
  10 #if (IND & (FFB_VB_TWOSIDE_BIT))
  11         GLfloat (*col1)[4];
  12         GLuint col1_stride;
  13 #endif
  14 #endif
  15 #if (IND & FFB_VB_XYZ_BIT)
  16         GLfloat (*proj)[4] = VB->NdcPtr->data;
  17         GLuint proj_stride = VB->NdcPtr->stride;
  18         const GLubyte *mask = VB->ClipMask;
  19 #endif
  20         ffb_vertex *v = &fmesa->verts[start];
  21         int i;
  22
  23 #ifdef VB_DEBUG
  24         fprintf(stderr, "FFB: ffb_emit ["
  25 #if (IND & (FFB_VB_XYZ_BIT))
  26                 " XYZ"
  27 #endif
  28 #if (IND & (FFB_VB_RGBA_BIT))
  29                 " RGBA"
  30 #endif
  31 #if (IND & (FFB_VB_TWOSIDE_BIT))
  32                 " TWOSIDE"
  33 #endif
  34                 "] start(%d) end(%d) import(%d)\n",
  35                 start, end,
  36                 VB->importable_data);
  37 #endif
  38
  39 #if (IND & (FFB_VB_RGBA_BIT))
  40         if (VB->ColorPtr[0]->Type != GL_FLOAT)
  41                 ffbImportColors(fmesa, ctx, 0);
  42 #if (IND & (FFB_VB_TWOSIDE_BIT))
  43         if (VB->ColorPtr[1]->Type != GL_FLOAT)
  44                 ffbImportColors(fmesa, ctx, 1);
  45 #endif
  46         col0 = (GLfloat (*)[4]) VB->ColorPtr[0]->Ptr;
  47         col0_stride = VB->ColorPtr[0]->StrideB;
  48 #if (IND & (FFB_VB_TWOSIDE_BIT))
  49         col1 = (GLfloat (*)[4]) VB->ColorPtr[1]->Ptr;
  50         col1_stride = VB->ColorPtr[1]->StrideB;
  51 #endif
  52 #endif
  53
  54         if (VB->importable_data) {
  55                 if (start) {
  56 #if (IND & (FFB_VB_XYZ_BIT))
  57                         proj = (GLfloat (*)[4])((GLubyte *)proj + start * proj_stride);
  58 #endif
  59 #if (IND & (FFB_VB_RGBA_BIT))
  60                         col0 = (GLfloat (*)[4])((GLubyte *)col0 + start * col0_stride);
  61 #if (IND & (FFB_VB_TWOSIDE_BIT))
  62                         col1 = (GLfloat (*)[4])((GLubyte *)col1 + start * col1_stride);
  63 #endif
  64 #endif
  65                 }
  66                 for (i = start; i < end; i++, v++) {
  67 #if (IND & (FFB_VB_XYZ_BIT))
  68                         if (mask[i] == 0) {
  69                                 v->x = proj[0][0];
  70                                 v->y = proj[0][1];
  71                                 v->z = proj[0][2];
  72                         }
  73                         proj = (GLfloat (*)[4])((GLubyte *)proj + proj_stride);
  74 #endif
  75 #if (IND & (FFB_VB_RGBA_BIT))
  76                         v->color[0].alpha = CLAMP(col0[0][3], 0.0f, 1.0f);
  77                         v->color[0].red   = CLAMP(col0[0][0], 0.0f, 1.0f);
  78                         v->color[0].green = CLAMP(col0[0][1], 0.0f, 1.0f);
  79                         v->color[0].blue  = CLAMP(col0[0][2], 0.0f, 1.0f);
  80                         col0 = (GLfloat (*)[4])((GLubyte *)col0 + col0_stride);
  81 #if (IND & (FFB_VB_TWOSIDE_BIT))
  82                         v->color[1].alpha = CLAMP(col1[0][3], 0.0f, 1.0f);
  83                         v->color[1].red   = CLAMP(col1[0][0], 0.0f, 1.0f);
  84                         v->color[1].green = CLAMP(col1[0][1], 0.0f, 1.0f);
  85                         v->color[1].blue  = CLAMP(col1[0][2], 0.0f, 1.0f);
  86                         col1 = (GLfloat (*)[4])((GLubyte *)col1 + col1_stride);
  87 #endif
  88 #endif
  89                 }
  90         } else {
  91                 for (i = start; i < end; i++, v++) {
  92 #if (IND & (FFB_VB_XYZ_BIT))
  93                         if (mask[i] == 0) {
  94                                 v->x = proj[i][0];
  95                                 v->y = proj[i][1];
  96                                 v->z = proj[i][2];
  97                         }
  98 #endif
  99 #if (IND & (FFB_VB_RGBA_BIT))
 100                         v->color[0].alpha = CLAMP(col0[i][3], 0.0f, 1.0f);
 101                         v->color[0].red   = CLAMP(col0[i][0], 0.0f, 1.0f);
 102                         v->color[0].green = CLAMP(col0[i][1], 0.0f, 1.0f);
 103                         v->color[0].blue  = CLAMP(col0[i][2], 0.0f, 1.0f);
 104 #if (IND & (FFB_VB_TWOSIDE_BIT))
 105                         v->color[1].alpha = CLAMP(col1[i][3], 0.0f, 1.0f);
 106                         v->color[1].red   = CLAMP(col1[i][0], 0.0f, 1.0f);
 107                         v->color[1].green = CLAMP(col1[i][1], 0.0f, 1.0f);
 108                         v->color[1].blue  = CLAMP(col1[i][2], 0.0f, 1.0f);
 109 #endif
 110 #endif
 111                 }
 112         }
 113 }
 114
 115 static void TAG(interp)(GLcontext *ctx, GLfloat t,
 116                         GLuint edst, GLuint eout, GLuint ein,
 117                         GLboolean force_boundary)
 118 {
 119 #if (IND & (FFB_VB_XYZ_BIT | FFB_VB_RGBA_BIT))
 120         ffbContextPtr fmesa = FFB_CONTEXT(ctx);
 121 #endif
 122 #if (IND & (FFB_VB_XYZ_BIT))
 123         struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb;
 124         const GLfloat *dstclip = VB->ClipPtr->data[edst];
 125         GLfloat oow = 1.0 / dstclip[3];
 126 #endif
 127 #if (IND & (FFB_VB_XYZ_BIT | FFB_VB_RGBA_BIT))
 128         ffb_vertex *dst = &fmesa->verts[edst];
 129 #endif
 130 #if (IND & (FFB_VB_RGBA_BIT))
 131         ffb_vertex *in = &fmesa->verts[eout];
 132         ffb_vertex *out = &fmesa->verts[ein];
 133 #endif
 134
 135 #ifdef VB_DEBUG
 136         fprintf(stderr, "FFB: ffb_interp ["
 137 #if (IND & (FFB_VB_XYZ_BIT))
 138                 " XYZ"
 139 #endif
 140 #if (IND & (FFB_VB_RGBA_BIT))
 141                 " RGBA"
 142 #endif
 143 #if (IND & (FFB_VB_TWOSIDE_BIT))
 144                 " TWOSIDE"
 145 #endif
 146                 "] edst(%d) eout(%d) ein(%d)\n",
 147                 edst, eout, ein);
 148 #endif
 149
 150 #if (IND & (FFB_VB_XYZ_BIT))
 151         dst->x = dstclip[0] * oow;
 152         dst->y = dstclip[1] * oow;
 153         dst->z = dstclip[2] * oow;
 154 #endif
 155
 156 #if (IND & (FFB_VB_RGBA_BIT))
 157         INTERP_F(t, dst->color[0].alpha, out->color[0].alpha, in->color[0].alpha);
 158         INTERP_F(t, dst->color[0].red,   out->color[0].red,   in->color[0].red);
 159         INTERP_F(t, dst->color[0].green, out->color[0].green, in->color[0].green);
 160         INTERP_F(t, dst->color[0].blue,  out->color[0].blue,  in->color[0].blue);
 161 #if (IND & (FFB_VB_TWOSIDE_BIT))
 162         INTERP_F(t, dst->color[1].alpha, out->color[1].alpha, in->color[1].alpha);
 163         INTERP_F(t, dst->color[1].red,   out->color[1].red,   in->color[1].red);
 164         INTERP_F(t, dst->color[1].green, out->color[1].green, in->color[1].green);
 165         INTERP_F(t, dst->color[1].blue,  out->color[1].blue,  in->color[1].blue);
 166 #endif
 167 #endif
 168 }
 169
 170 static void TAG(init)(void)
 171 {
 172         setup_tab[IND].emit = TAG(emit);
 173         setup_tab[IND].interp = TAG(interp);
 174 }
 175
 176 #undef IND
 177 #undef TAG