src/mesa/main/pack_tmp.h

   1 /*
   2  * Copyright © 2012 Intel Corporation
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  21  * IN THE SOFTWARE.
  22  */
  23
  24 static void
  25 FN_NAME(struct gl_context *ctx,
  26         DST_TYPE *dst,
  27         GLenum dstFormat,
  28         SRC_TYPE rgba[][4],
  29         int n)
  30 {
  31    int i;
  32
  33    switch (dstFormat) {
  34    case GL_RED_INTEGER_EXT:
  35       for (i=0;i<n;i++) {
  36          dst[i] = SRC_CONVERT(rgba[i][RCOMP]);
  37       }
  38       break;
  39
  40    case GL_GREEN_INTEGER_EXT:
  41       for (i=0;i<n;i++) {
  42          dst[i] = SRC_CONVERT(rgba[i][GCOMP]);
  43       }
  44       break;
  45
  46    case GL_BLUE_INTEGER_EXT:
  47       for (i=0;i<n;i++) {
  48          dst[i] = SRC_CONVERT(rgba[i][BCOMP]);
  49       };
  50       break;
  51
  52    case GL_ALPHA_INTEGER_EXT:
  53       for (i=0;i<n;i++) {
  54          dst[i] = SRC_CONVERT(rgba[i][ACOMP]);
  55       }
  56       break;
  57
  58    case GL_RG_INTEGER:
  59       for (i=0;i<n;i++) {
  60          dst[i*2+0] = SRC_CONVERT(rgba[i][RCOMP]);
  61          dst[i*2+1] = SRC_CONVERT(rgba[i][GCOMP]);
  62       }
  63       break;
  64
  65    case GL_RGB_INTEGER_EXT:
  66       for (i=0;i<n;i++) {
  67          dst[i*3+0] = SRC_CONVERT(rgba[i][RCOMP]);
  68          dst[i*3+1] = SRC_CONVERT(rgba[i][GCOMP]);
  69          dst[i*3+2] = SRC_CONVERT(rgba[i][BCOMP]);
  70       }
  71       break;
  72
  73    case GL_RGBA_INTEGER_EXT:
  74       for (i=0;i<n;i++) {
  75          dst[i*4+0] = SRC_CONVERT(rgba[i][RCOMP]);
  76          dst[i*4+1] = SRC_CONVERT(rgba[i][GCOMP]);
  77          dst[i*4+2] = SRC_CONVERT(rgba[i][BCOMP]);
  78          dst[i*4+3] = SRC_CONVERT(rgba[i][ACOMP]);
  79       }
  80       break;
  81
  82    case GL_BGR_INTEGER_EXT:
  83       for (i=0;i<n;i++) {
  84          dst[i*3+0] = SRC_CONVERT(rgba[i][BCOMP]);
  85          dst[i*3+1] = SRC_CONVERT(rgba[i][GCOMP]);
  86          dst[i*3+2] = SRC_CONVERT(rgba[i][RCOMP]);
  87       }
  88       break;
  89
  90    case GL_BGRA_INTEGER_EXT:
  91       for (i=0;i<n;i++) {
  92          dst[i*4+0] = SRC_CONVERT(rgba[i][BCOMP]);
  93          dst[i*4+1] = SRC_CONVERT(rgba[i][GCOMP]);
  94          dst[i*4+2] = SRC_CONVERT(rgba[i][RCOMP]);
  95          dst[i*4+3] = SRC_CONVERT(rgba[i][ACOMP]);
  96       }
  97       break;
  98
  99    case GL_LUMINANCE_INTEGER_EXT:
 100       for (i=0;i<n;i++) {
 101          dst[i] = SRC_CONVERT(rgba[i][RCOMP] +
 102                               rgba[i][GCOMP] +
 103                               rgba[i][BCOMP]);
 104       }
 105       break;
 106
 107    case GL_LUMINANCE_ALPHA_INTEGER_EXT:
 108       for (i=0;i<n;i++) {
 109          dst[i*2+0] = SRC_CONVERT(rgba[i][RCOMP] +
 110                                   rgba[i][GCOMP] +
 111                                   rgba[i][BCOMP]);
 112          dst[i*2+1] = SRC_CONVERT(rgba[i][ACOMP]);
 113       }
 114       break;
 115
 116    default:
 117       _mesa_problem(ctx,
 118          "Unsupported format (%s)",
 119          _mesa_lookup_enum_by_nr(dstFormat));
 120       break;
 121    }
 122 }