tests/fbo/fbo-incomplete-texture-01.c

   1 /*
   2  * Copyright © 2010 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 /**
  25  * \file fbo-incomplete-texture-01.c
  26  * Verify that an FBO with an incomplete texture attached is complete
  27  *
  28  * This test uses a 2D texture that specifies a mipmap filter, but the mipmap
  29  * stack is not complete.  This should not affect the completeness of the FBO.
  30  * This test originally wanted the FBO to be incomplete.  However, this just
  31  * verified incorrect behavior in another vendor's driver.
  32  *
  33  * \author Ian Romanick <ian.d.romanick@intel.com>
  34  */
  35
  36 #include "piglit-util-gl.h"
  37
  38 PIGLIT_GL_TEST_CONFIG_BEGIN
  39
  40         config.supports_gl_compat_version = 10;
  41
  42         config.window_visual = PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_DOUBLE;
  43         config.khr_no_error_support = PIGLIT_NO_ERRORS;
  44
  45 PIGLIT_GL_TEST_CONFIG_END
  46
  47 enum piglit_result
  48 piglit_display(void)
  49 {
  50         return PIGLIT_FAIL;
  51 }
  52
  53 void
  54 piglit_init(int argc, char **argv)
  55 {
  56         GLuint tex;
  57         GLuint fb;
  58         GLenum status;
  59         const float color[] = {1.0,0.0,0.0,1.0};
  60
  61         piglit_ortho_projection(piglit_width, piglit_height, GL_FALSE);
  62
  63         piglit_require_extension("GL_ARB_framebuffer_object");
  64
  65         /* This texture will be incomplete because a mipmap filter mode is used,
  66          * but the mipmap stack is incomplete.
  67          */
  68         glGenTextures(1, &tex);
  69         glBindTexture(GL_TEXTURE_2D, tex);
  70         glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 32, 32, 0,
  71                      GL_RGBA, GL_UNSIGNED_BYTE, NULL);
  72
  73         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,
  74                         GL_LINEAR_MIPMAP_LINEAR);
  75         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
  76
  77         glGenFramebuffers(1, &fb);
  78         glBindFramebuffer(GL_FRAMEBUFFER, fb);
  79         glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
  80                                GL_TEXTURE_2D, tex, 0);
  81
  82         if (!piglit_check_gl_error(GL_NO_ERROR))
  83                 piglit_report_result(PIGLIT_FAIL);
  84
  85         status = glCheckFramebufferStatus(GL_FRAMEBUFFER);
  86         if (status != GL_FRAMEBUFFER_COMPLETE) {
  87                 fprintf(stderr, "FBO erroneously incomplete: 0x%04x\n",
  88                         status);
  89                 piglit_report_result(PIGLIT_FAIL);
  90         }
  91
  92         glClearColor(color[0], color[1], color[2], color[3]);
  93         glClear(GL_COLOR_BUFFER_BIT);
  94
  95         if (!piglit_check_gl_error(GL_NO_ERROR))
  96                 piglit_report_result(PIGLIT_FAIL);
  97
  98         if (!piglit_probe_texel_rect_rgba(GL_TEXTURE_2D, 0, 0, 0, 32, 32,
  99                                           color)) {
 100                 fprintf(stderr, "FBO clear didn't work\n");
 101                 piglit_report_result(PIGLIT_FAIL);
 102         }
 103
 104         piglit_report_result(PIGLIT_PASS);
 105 }