tests/security/initialized-texmemory.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 that texture memory is initialized to a constant color and not
  26  * stale data that may show old contents of VRAM.
  27  *
  28  * To pass this test an OpenGL implementation should initialize the
  29  * contents of the new buffer to some fixed value (like all zeros).
  30  * But since that's not spec'd by OpenGL, we only return WARN instead of
  31  * FAIL if that's not the case.
  32  *
  33  * Brian Paul
  34  * June 2012
  35  */
  36
  37 #include "piglit-util-gl.h"
  38
  39 PIGLIT_GL_TEST_CONFIG_BEGIN
  40
  41         config.supports_gl_compat_version = 10;
  42
  43         config.window_width = 512;
  44         config.window_height = 512;
  45         config.window_visual = PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_DOUBLE;
  46
  47 PIGLIT_GL_TEST_CONFIG_END
  48
  49
  50 enum piglit_result
  51 piglit_display(void)
  52 {
  53         GLfloat firstPixel[4];
  54         bool pass = true;
  55
  56         /* init color buffer to red */
  57         glClearColor(1, 0, 0, 1);
  58         glClear(GL_COLOR_BUFFER_BIT);
  59
  60         glEnable(GL_TEXTURE_2D);
  61
  62         piglit_draw_rect_tex(0, 0, piglit_width, piglit_height,
  63                              0.0, 0.0, 1.0, 1.0);
  64
  65         /* The whole image should be same color */
  66         glReadPixels(0, 0, 1, 1, GL_RGBA, GL_FLOAT, firstPixel);
  67         pass = piglit_probe_rect_rgb(0, 0, piglit_width, piglit_height,
  68                                      firstPixel);
  69
  70         piglit_present_results();
  71
  72         return pass ? PIGLIT_PASS : PIGLIT_WARN;
  73 }
  74
  75
  76 void
  77 piglit_init(int argc, char **argv)
  78 {
  79         GLsizei width = 1024, height = 1024;
  80         GLuint tex;
  81
  82         /* Create texture image with pixels=NULL (undefined) */
  83         glGenTextures(1, &tex);
  84         glBindTexture(GL_TEXTURE_2D, tex);
  85         glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0,
  86                      GL_RGBA, GL_UNSIGNED_BYTE, NULL);
  87         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
  88         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
  89         glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
  90
  91         piglit_ortho_projection(piglit_width, piglit_height, GL_FALSE);
  92 }