tests/spec/arb_clear_texture/common.c

   1 /*
   2  * Copyright (c) 2014 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 #include "common.h"
  25
  26 #define TEX_WIDTH 64
  27 #define TEX_HEIGHT 256
  28
  29 #define ZERO_CLEAR_X 10
  30 #define ZERO_CLEAR_Y 15
  31 #define ZERO_CLEAR_WIDTH 8
  32 #define ZERO_CLEAR_HEIGHT 12
  33
  34 #define VALUE_CLEAR_X 30
  35 #define VALUE_CLEAR_Y 50
  36 #define VALUE_CLEAR_WIDTH 9
  37 #define VALUE_CLEAR_HEIGHT 13
  38
  39 /* Arbitrary values that is big enough for four doubles */
  40 static const GLubyte clearValue[] = {
  41         0x1f, 0x1e, 0x1d, 0x1c,
  42         0x1b, 0x1a, 0x19, 0x18,
  43         0x17, 0x16, 0x15, 0x14,
  44         0x13, 0x12, 0x11, 0x10,
  45         0x0f, 0x0e, 0x0d, 0x0c,
  46         0x0b, 0x0a, 0x09, 0x08,
  47         0x07, 0x06, 0x05, 0x04,
  48         0x03, 0x02, 0x01, 0x00,
  49 };
  50
  51 static GLuint
  52 create_texture(GLenum internalFormat,
  53                GLenum format,
  54                GLenum type,
  55                GLsizei texelSize)
  56 {
  57         GLubyte *data, *p;
  58         GLuint tex;
  59         int i;
  60
  61         data = malloc(TEX_WIDTH * TEX_HEIGHT * texelSize);
  62         p = data;
  63
  64         /* Fill the data with increasing bytes */
  65         for (i = 0; i < TEX_WIDTH * TEX_HEIGHT * texelSize; i++)
  66                 *(p++) = i;
  67
  68         glGenTextures(1, &tex);
  69         glBindTexture(GL_TEXTURE_2D, tex);
  70         glTexImage2D(GL_TEXTURE_2D,
  71                      0, /* level */
  72                      internalFormat,
  73                      TEX_WIDTH, TEX_HEIGHT,
  74                      0, /* border */
  75                      format, type,
  76                      data);
  77
  78         free(data);
  79
  80         return tex;
  81 }
  82
  83 static void
  84 clear_texture(GLuint tex, GLenum format, GLenum type, GLsizei texelSize)
  85 {
  86         /* Clear one region using a NULL (all zeroes) value */
  87         glClearTexSubImage(tex,
  88                            0, /* level */
  89                            ZERO_CLEAR_X,
  90                            ZERO_CLEAR_Y,
  91                            0, /* z */
  92                            ZERO_CLEAR_WIDTH,
  93                            ZERO_CLEAR_HEIGHT,
  94                            1, /* depth */
  95                            format,
  96                            type,
  97                            NULL /* value */);
  98
  99         /* Clear another region to a known value */
 100         glClearTexSubImage(tex,
 101                            0, /* level */
 102                            VALUE_CLEAR_X,
 103                            VALUE_CLEAR_Y,
 104                            0, /* z */
 105                            VALUE_CLEAR_WIDTH,
 106                            VALUE_CLEAR_HEIGHT,
 107                            1, /* depth */
 108                            format,
 109                            type,
 110                            clearValue);
 111 }
 112
 113 static bool
 114 is_value_clear(const GLubyte *texel, GLsizei texelSize)
 115 {
 116         int i;
 117
 118         for (i = 0; i < texelSize; i++)
 119                 if (texel[i] != clearValue[i])
 120                         return false;
 121
 122         return true;
 123 }
 124
 125 static bool
 126 is_zero_clear(const GLubyte *texel, GLsizei texelSize)
 127 {
 128         int i;
 129
 130         for (i = 0; i < texelSize; i++)
 131                 if (texel[i] != 0)
 132                         return false;
 133
 134         return true;
 135 }
 136
 137 static bool
 138 check_texels(GLenum format, GLenum type, GLsizei texelSize)
 139 {
 140         GLubyte *data, *p;
 141         bool success = true;
 142         int x, y, b;
 143
 144         data = malloc(TEX_WIDTH * TEX_HEIGHT * texelSize);
 145
 146         glPixelStorei(GL_PACK_ALIGNMENT, 1);
 147
 148         glGetTexImage(GL_TEXTURE_2D,
 149                       0, /* level */
 150                       format, type,
 151                       data);
 152
 153         p = data;
 154
 155         for (y = 0; y < TEX_HEIGHT; y++) {
 156                 for (x = 0; x < TEX_WIDTH; x++) {
 157                         if (x >= VALUE_CLEAR_X &&
 158                             x < VALUE_CLEAR_X + VALUE_CLEAR_WIDTH &&
 159                             y >= VALUE_CLEAR_Y &&
 160                             y < VALUE_CLEAR_Y + VALUE_CLEAR_HEIGHT) {
 161                                 if (!is_value_clear(p, texelSize))
 162                                         success = false;
 163                         } else if (x >= ZERO_CLEAR_X &&
 164                                    x < ZERO_CLEAR_X + ZERO_CLEAR_WIDTH &&
 165                                    y >= ZERO_CLEAR_Y &&
 166                                    y < ZERO_CLEAR_Y + ZERO_CLEAR_HEIGHT) {
 167                                 if (!is_zero_clear(p, texelSize))
 168                                         success = false;
 169                         } else {
 170                                 for (b = 0; b < texelSize; b++)
 171                                         if (p[b] != ((p + b - data) & 0xff))
 172                                                 success = false;
 173                         }
 174
 175                         p += texelSize;
 176                 }
 177         }
 178
 179         free(data);
 180
 181         return success;
 182 }
 183
 184 bool
 185 test_format(GLenum internalFormat,
 186             GLenum format,
 187             GLenum type,
 188             GLsizei texelSize)
 189 {
 190         GLuint tex;
 191         bool pass;
 192
 193         /* glClearTexture is either in the GL_ARB_clear_texture
 194          * extension or in core in GL 4.4
 195          */
 196         if (piglit_get_gl_version() < 44 &&
 197             !piglit_is_extension_supported("GL_ARB_clear_texture")) {
 198                 printf("OpenGL 4.4 or GL_ARB_clear_texture is required.\n");
 199                 piglit_report_result(PIGLIT_SKIP);
 200         }
 201
 202         tex = create_texture(internalFormat, format, type, texelSize);
 203
 204         if (!piglit_check_gl_error(GL_NO_ERROR))
 205                 return false;
 206
 207         clear_texture(tex, format, type, texelSize);
 208
 209         if (!piglit_check_gl_error(GL_NO_ERROR))
 210                 return false;
 211
 212         glBindTexture(GL_TEXTURE_2D, tex);
 213
 214         pass = check_texels(format, type, texelSize);
 215
 216         glBindTexture(GL_TEXTURE_2D, 0);
 217
 218         glDeleteTextures(1, &tex);
 219
 220         return pass;
 221 }
 222
 223 bool
 224 test_formats(const struct format *formats,
 225              int n_formats)
 226 {
 227         bool overallResult = true;
 228         bool pass;
 229         int i;
 230
 231         for (i = 0; i < n_formats; i++) {
 232                 const struct format *format = formats + i;
 233
 234                 pass = test_format(format->internalFormat,
 235                                    format->format,
 236                                    format->type,
 237                                    format->texelSize);
 238
 239                 printf("internalFormat = %s, format = %s, type = %s : %s\n",
 240                        piglit_get_gl_enum_name(format->internalFormat),
 241                        piglit_get_gl_enum_name(format->format),
 242                        piglit_get_gl_enum_name(format->type),
 243                        pass ? "pass" : "fail");
 244
 245                 overallResult &= pass;
 246         }
 247
 248         return overallResult;
 249 }
 250
 251 bool
 252 test_invalid_format(GLenum internalFormat,
 253                     GLenum texImageFormat,
 254                     GLenum texImageType,
 255                     GLenum clearValueFormat,
 256                     GLenum clearValueType)
 257 {
 258         static const GLubyte dummy_data[sizeof (float) * 4];
 259         bool pass = true;
 260         GLuint tex;
 261
 262         glGenTextures(1, &tex);
 263         glBindTexture(GL_TEXTURE_2D, tex);
 264         glTexImage2D(GL_TEXTURE_2D,
 265                      0, /* level */
 266                      internalFormat,
 267                      1, 1, /* width/height */
 268                      0, /* border */
 269                      texImageFormat,
 270                      texImageType,
 271                      dummy_data);
 272
 273         pass &= piglit_check_gl_error(GL_NO_ERROR);
 274
 275         glClearTexImage(tex, 0, clearValueFormat, clearValueType, dummy_data);
 276
 277         pass &= piglit_check_gl_error(GL_INVALID_OPERATION);
 278
 279         glBindTexture(GL_TEXTURE_2D, 0);
 280         glDeleteTextures(1, &tex);
 281
 282         return pass;
 283 }