195695/xorg.i.2

   1 typedef unsigned int GLenum;
   2 typedef unsigned char GLboolean;
   3 typedef void GLvoid;
   4 typedef int GLint;
   5 typedef unsigned char GLubyte;
   6 typedef unsigned int GLuint;
   7 typedef float GLfloat;
   8 typedef GLubyte GLchan;
   9 typedef void (*FetchTexelFuncF) (const struct gl_texture_image * texImage,
  10                                  GLint col, GLint row, GLint img,
  11                                  GLfloat * texelOut);
  12 typedef void (*StoreTexelFunc) (struct gl_texture_image * texImage, GLint col,
  13                                 GLint row, GLint img, const void *texel);
  14 struct gl_texture_format {
  15         GLint MesaFormat;
  16         GLenum BaseFormat;
  17         GLenum DataType;
  18         GLubyte RedBits;
  19         GLubyte GreenBits;
  20         GLubyte BlueBits;
  21         GLubyte AlphaBits;
  22         GLubyte LuminanceBits;
  23         GLubyte IntensityBits;
  24         GLubyte IndexBits;
  25         GLubyte DepthBits;
  26         GLubyte StencilBits;
  27         FetchTexelFuncF FetchTexel3Df;
  28         StoreTexelFunc StoreTexel;
  29 };
  30 static void fxt1_encode(void);
  31 static GLboolean texstore_rgba_fxt1(GLuint dims,
  32                                     GLenum baseInternalFormat,
  33                                     const struct gl_texture_format *dstFormat,
  34                                     GLvoid * dstAddr, GLint dstXoffset,
  35                                     GLint dstYoffset, GLint dstZoffset,
  36                                     GLint dstRowStride,
  37                                     const GLuint * dstImageOffsets,
  38                                     GLint srcWidth, GLint srcHeight,
  39                                     GLint srcDepth, GLenum srcFormat,
  40                                     GLenum srcType, const GLvoid * srcAddr,
  41                                     const struct gl_pixelstore_attrib
  42                                     *srcPacking)
  43 {
  44         fxt1_encode();
  45 }
  46 static void fetch_texel_2d_rgba_fxt1(const struct gl_texture_image *texImage,
  47                                      GLint i, GLint j, GLint k, GLchan * texel)
  48 {
  49 }
  50 static void fetch_texel_2d_f_rgba_fxt1(const struct gl_texture_image *texImage,
  51                                        GLint i, GLint j, GLint k,
  52                                        GLfloat * texel)
  53 {
  54 }
  55 const struct gl_texture_format _mesa_texformat_rgba_fxt1 = {
  56 0, 0x1908, 0x8C17, 4, 4, 4, 1, 0, 0, 0, 0, 0, 0,
  57             texstore_rgba_fxt1, 0, fetch_texel_2d_rgba_fxt1,
  58             0, 0, fetch_texel_2d_f_rgba_fxt1, 0,
  59             0
  60 };
  61 typedef unsigned long long Fx64;
  62 static void fxt1_quantize_CHROMA(GLuint * cc, GLubyte input[32][4])
  63 {
  64         const GLint n_vect = 4;
  65         GLint i, j, k;
  66         for (j = n_vect - 1; k >= 32 / 2; k--) {
  67         }
  68 }
  69 static void fxt1_quantize_ALPHA1(GLuint * cc, GLubyte input[32][4])
  70 {
  71         const GLint n_vect = 3;
  72         const GLint n_comp = 4;
  73         GLfloat vec[1 + 1 + 1][4];
  74         GLint i, j, k;
  75         Fx64 hi;
  76                 GLint j1, j2;
  77                 GLint v1 = 0, v2 = 0;
  78                 GLfloat err = 1e9;
  79                 GLfloat tv[2 * 2][4];
  80                 for (i = 0; i < n_comp; i++) {
  81                 }
  82                 for (j1 = 0; j1 < 2; j1++) {
  83                         for (j2 = 2; j2 < 4; j2++) {
  84                                 GLfloat e = 0.0F;
  85                                 for (i = 0; i < n_comp; i++) {
  86                                         e += (tv[j1][i] -
  87                                               tv[j2][i]) * (tv[j1][i] -
  88                                                             tv[j2][i]);
  89                                 }
  90                                 if (e < err) {
  91                                         v1 = j1;
  92                                 }
  93                         }
  94                 }
  95                 for (i = 0; i < n_comp; i++) {
  96                         vec[0][i] = tv[1 - v1][i];
  97                 }
  98         for (j = n_vect - 1; j >= 0; j--) {
  99                 for (i = 0; i < n_comp - 1; i++) {
 100                         hi |= (GLuint) (vec[j][i] / 8.0F);
 101                 }
 102         }
 103         ((Fx64 *) cc)[1] = hi;
 104 }
 105 static void fxt1_quantize(GLuint * cc, const GLubyte * lines[], GLint comps)
 106 {
 107         GLubyte input[32][4];
 108         GLint i;
 109 GLint k;
 110 GLint l;
 111         for (l = 0; l < 4; l++) {
 112                 for (k = 0; k < 4; k++) {
 113                         for (i = 0; i < comps; i++) {
 114                         }
 115                 }
 116                 fxt1_quantize_ALPHA1(cc, input);
 117         }
 118 }
 119 static void fxt1_encode(void)
 120 {
 121         fxt1_quantize(0, 0, 0);
 122 }