tests/texturing/max-texture-size-level.c

   1 /*
   2  * Copyright 2012 VMware, Inc.
   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 /**
  25  * Test glTexImage with an image too large for the given mipmap level.
  26  *
  27  * Page 157 of the OpenGL 2.1 spec says:
  28  *
  29  * "In a similar fashion, the maximum allowable width of a one- or
  30  * two- dimensional texture image, and the maximum allowable height of a
  31  * two- dimensional texture image, must be at least 2k−lod + 2bt for
  32  * image arrays of level 0 through k, where k is the log base 2 of MAX
  33  * TEXTURE SIZE. The maximum allowable width and height of a cube map
  34  * texture must be the same, and must be at least 2k−lod + 2bt for image
  35  * arrays level 0 through k, where k is the log base 2 of MAX CUBE MAP
  36  * TEXTURE SIZE."
  37  */
  38
  39 #include "piglit-util-gl.h"
  40
  41 PIGLIT_GL_TEST_CONFIG_BEGIN
  42
  43         config.supports_gl_compat_version = 10;
  44
  45         config.window_visual = PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_DOUBLE;
  46         config.khr_no_error_support = PIGLIT_NO_ERRORS;
  47
  48 PIGLIT_GL_TEST_CONFIG_END
  49 enum piglit_result
  50 piglit_display(void)
  51 {
  52         /* no op */
  53         return PIGLIT_PASS;
  54 }
  55
  56
  57 void
  58 piglit_init(int argc, char **argv)
  59 {
  60         GLint maxSize;
  61         GLuint tex;
  62         bool pass;
  63
  64         glGetIntegerv(GL_MAX_TEXTURE_SIZE, &maxSize);
  65         printf("GL_MAX_TEXTURE_SIZE = %d\n", maxSize);
  66
  67         glGenTextures(1, &tex);
  68         glBindTexture(GL_TEXTURE_2D, tex);
  69
  70         /*
  71          * Note: we don't try to create any maxSize by maxSize textures
  72          * since we may not have enough texture memory.
  73          */
  74
  75         /*
  76          * For level 0, maxSize by 1 (and vice-versa) should be OK.
  77          */
  78         glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA,
  79                      maxSize, 1, 0,
  80                      GL_RGBA, GL_UNSIGNED_BYTE, NULL);
  81         pass = piglit_check_gl_error(GL_NO_ERROR);
  82
  83         glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA,
  84                      1, maxSize, 0,
  85                      GL_RGBA, GL_UNSIGNED_BYTE, NULL);
  86         pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
  87
  88         if (!piglit_khr_no_error) {
  89                 /*
  90                  * For level 1, maxSize by 1 (and vice versa) should fail.
  91                  */
  92                 glTexImage2D(GL_TEXTURE_2D, 1, GL_RGBA,
  93                              maxSize, 1, 0,
  94                              GL_RGBA, GL_UNSIGNED_BYTE, NULL);
  95                 pass = piglit_check_gl_error(GL_INVALID_VALUE) & pass;
  96
  97                 glTexImage2D(GL_TEXTURE_2D, 1, GL_RGBA,
  98                              1, maxSize, 0,
  99                              GL_RGBA, GL_UNSIGNED_BYTE, NULL);
 100                 pass = piglit_check_gl_error(GL_INVALID_VALUE) & pass;
 101
 102                 /*
 103                  * For level 2, maxSize/2 by 1 (and vice versa) should fail.
 104                  */
 105                 glTexImage2D(GL_TEXTURE_2D, 2, GL_RGBA,
 106                              maxSize/2, 1, 0,
 107                              GL_RGBA, GL_UNSIGNED_BYTE, NULL);
 108                 pass = piglit_check_gl_error(GL_INVALID_VALUE) & pass;
 109
 110                 glTexImage2D(GL_TEXTURE_2D, 2, GL_RGBA,
 111                              1, maxSize/2, 0,
 112                              GL_RGBA, GL_UNSIGNED_BYTE, NULL);
 113                 pass = piglit_check_gl_error(GL_INVALID_VALUE) & pass;
 114         }
 115
 116         piglit_report_result(pass ? PIGLIT_PASS : PIGLIT_FAIL);
 117 }