OpenCores
URL https://opencores.org/ocsvn/openrisc/openrisc/trunk

Subversion Repositories openrisc

[/] [openrisc/] [trunk/] [gnu-stable/] [gcc-4.5.1/] [gcc/] [testsuite/] [gcc.c-torture/] [compile/] [pr34091.c] - Blame information for rev 859

Go to most recent revision | Details | Compare with Previous | View Log

Line No. Rev Author Line
1 297 jeremybenn 
typedef unsigned int GLenum;
2 
typedef unsigned char GLboolean;
3 
typedef int GLint;
4 
typedef unsigned short GLushort;
5 
typedef unsigned int GLuint;
6 
typedef float GLfloat;
7 
typedef GLushort GLchan;
8 
struct gl_texture_image;
9 
typedef struct __GLcontextRec GLcontext;
10 
typedef void (*FetchTexelFuncC) (const struct gl_texture_image * texImage,
11 
                                 GLint col, GLint row, GLint img,
12 
                                 GLchan * texelOut);
13 
struct gl_texture_format
14 
{
15 
};
16 
struct gl_texture_image
17 
{
18 
  GLenum _BaseFormat;
19 
  GLboolean _IsPowerOfTwo;
20 
  FetchTexelFuncC FetchTexelc;
21 
};
22 
struct gl_texture_object
23 
{
24 
  GLenum Target;
25 
  GLenum WrapS;
26 
  GLenum MinFilter;
27 
  GLenum MagFilter;
28 
  GLint BaseLevel;
29 
  GLint _MaxLevel;
30 
  struct gl_texture_image *Image[6][12];
31 
};
32 
enum _format
33 
{
34 
    MESA_FORMAT_RGBA_DXT3, MESA_FORMAT_RGBA_DXT5, MESA_FORMAT_RGBA,
35 
    MESA_FORMAT_RGB, MESA_FORMAT_ALPHA, MESA_FORMAT_LUMINANCE,
36 
};
37 
typedef void (*texture_sample_func) (GLcontext * ctx,
38 
                                     const struct gl_texture_object * tObj,
39 
                                     GLuint n, const GLfloat texcoords[][4],
40 
                                     const GLfloat lambda[],
41 
                                     GLchan rgba[][4]);
42 
lerp_2d (GLfloat a, GLfloat b, GLfloat v00, GLfloat v10, GLfloat v01,
43 
         GLfloat v11)
44 
{
45 
  const GLfloat temp0 = ((v00) + (a) * ((v10) - (v00)));
46 
  const GLfloat temp1 = ((v01) + (a) * ((v11) - (v01)));
47 
  return ((temp0) + (b) * ((temp1) - (temp0)));
48 
}
49 
static __inline__ void
50 
lerp_rgba (GLchan result[4], GLfloat t, const GLchan a[4], const GLchan b[4])
51 
{
52 
  result[0] = (GLchan) (((a[0]) + (t) * ((b[0]) - (a[0]))) + 0.5);
53 
  result[1] = (GLchan) (((a[1]) + (t) * ((b[1]) - (a[1]))) + 0.5);
54 
  result[2] = (GLchan) (((a[2]) + (t) * ((b[2]) - (a[2]))) + 0.5);
55 
}
56 
static __inline__ void
57 
lerp_rgba_2d (GLchan result[4], GLfloat a, GLfloat b, const GLchan t00[4],
58 
              const GLchan t10[4], const GLchan t01[4], const GLchan t11[4])
59 
{
60 
  result[0] = (GLchan) (lerp_2d (a, b, t00[0], t10[0], t01[0], t11[0]) + 0.5);
61 
  result[1] = (GLchan) (lerp_2d (a, b, t00[1], t10[1], t01[1], t11[1]) + 0.5);
62 
  result[2] = (GLchan) (lerp_2d (a, b, t00[2], t10[2], t01[2], t11[2]) + 0.5);
63 
}
64 
static __inline__ void
65 
sample_2d_linear_repeat (GLcontext * ctx,
66 
                         const struct gl_texture_object *tObj,
67 
                         const struct gl_texture_image *img,
68 
                         const GLfloat texcoord[4], GLchan rgba[])
69 
{
70 
  GLint i0, j0, i1, j1;
71 
  GLfloat a, b;
72 
  GLchan t00[4], t10[4], t01[4], t11[4];
73 
  {
74 
  };
75 
  img->FetchTexelc (img, i1, j1, 0, t11);
76 
  lerp_rgba_2d (rgba, a, b, t00, t10, t01, t11);
77 
}
78 
sample_2d_nearest_mipmap_linear (GLcontext * ctx,
79 
                                 const struct gl_texture_object *tObj,
80 
                                 GLuint n, const GLfloat texcoord[][4],
81 
                                 const GLfloat lambda[], GLchan rgba[][4])
82 
{
83 
  GLuint i;
84 
  GLint level = linear_mipmap_level (tObj, lambda[i]);
85 
  sample_2d_nearest (ctx, tObj, tObj->Image[0][tObj->_MaxLevel], texcoord[i], rgba[i]);
86 
  GLchan t0[4], t1[4];
87 
  sample_2d_nearest (ctx, tObj, tObj->Image[0][level], texcoord[i], t0);
88 
  sample_2d_nearest (ctx, tObj, tObj->Image[0][level + 1], texcoord[i], t1);
89 
}
90 
static void
91 
sample_2d_linear_mipmap_linear_repeat (GLcontext * ctx,
92 
                                       const struct gl_texture_object *tObj,
93 
                                       GLuint n, const GLfloat texcoord[][4],
94 
                                       const GLfloat lambda[],
95 
                                       GLchan rgba[][4])
96 
{
97 
  GLuint i;
98 
  for (i = 0; i < n; i++)
99 
    {
100 
      GLint level = linear_mipmap_level (tObj, lambda[i]);
101 
      if (level >= tObj->_MaxLevel)
102 
        {
103 
          GLchan t0[4], t1[4];
104 
          const GLfloat f = ((lambda[i]) - ifloor (lambda[i]));
105 
          sample_2d_linear_repeat (ctx, tObj, tObj->Image[0][level],
106 
                                   texcoord[i], t0);
107 
          sample_2d_linear_repeat (ctx, tObj, tObj->Image[0][level + 1],
108 
                                   texcoord[i], t1);
109 
          lerp_rgba (rgba[i], f, t0, t1);
110 
        }
111 
    }
112 
}
113 
static void
114 
sample_lambda_2d (GLcontext * ctx, const struct gl_texture_object *tObj,
115 
                  GLuint n, const GLfloat texcoords[][4],
116 
                  const GLfloat lambda[], GLchan rgba[][4])
117 
{
118 
  const struct gl_texture_image *tImg = tObj->Image[0][tObj->BaseLevel];
119 
  GLuint minStart, minEnd;
120 
  GLuint magStart, magEnd;
121 
  const GLboolean repeatNoBorderPOT = (tObj->WrapS == 0x2901)
122 
    && (tImg->_BaseFormat != 0x1900) && tImg->_IsPowerOfTwo;
123 
  compute_min_mag_ranges (tObj, n, lambda, &minStart, &minEnd, &magStart,
124 
                          &magEnd);
125 
  if (minStart < minEnd)
126 
    {
127 
      const GLuint m = minEnd - minStart;
128 
      switch (tObj->MinFilter)
129 
        {
130 
        case 0x2600:
131 
          if (repeatNoBorderPOT)
132 
            {
133 
                case MESA_FORMAT_RGB:
134 
                  opt_sample_rgb_2d (ctx, tObj, m, texcoords + minStart,
135 
                                     ((void *) 0), rgba + minStart);
136 
                case MESA_FORMAT_RGBA:
137 
                  opt_sample_rgba_2d (ctx, tObj, m, texcoords + minStart,
138 
                                      ((void *) 0), rgba + minStart);
139 
            }
140 
            {
141 
              sample_nearest_2d (ctx, tObj, m, texcoords + minStart,
142 
                                 ((void *) 0), rgba + minStart);
143 
            }
144 
          break;
145 
          sample_2d_nearest_mipmap_linear (ctx, tObj, m, texcoords + minStart,
146 
                                           lambda + minStart,
147 
                                           rgba + minStart);
148 
        case 0x2703:
149 
          if (repeatNoBorderPOT)
150 
            sample_2d_linear_mipmap_linear_repeat (ctx, tObj, m,
151 
                                                   texcoords + minStart,
152 
                                                   lambda + minStart,
153 
                                                   rgba + minStart);
154 
        }
155 
      switch (tObj->MagFilter)
156 
        {
157 
                case MESA_FORMAT_RGB:
158 
                  opt_sample_rgb_2d (ctx, tObj, m, texcoords + magStart,
159 
                                     ((void *) 0), rgba + magStart);
160 
                  opt_sample_rgba_2d (ctx, tObj, m, texcoords + magStart,
161 
                                      ((void *) 0), rgba + magStart);
162 
                  sample_nearest_2d (ctx, tObj, m, texcoords + magStart,
163 
                                     ((void *) 0), rgba + magStart);
164 
        }
165 
    }
166 
}
167 
texture_sample_func
168 
_swrast_choose_texture_sample_func (const struct gl_texture_object *t)
169 
{
170 
      switch (t->Target)
171 
        {
172 
        case 0x0DE0:
173 
              return &sample_lambda_2d;
174 
        }
175 
}

powered by: WebSVN 2.1.0

© copyright 1999-2024 OpenCores.org, equivalent to Oliscience, all rights reserved. OpenCores®, registered trademark.