tests/spec/ext_framebuffer_multisample/negative-readpixels.c

   1 /*
   2  * Copyright © 2011 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 "piglit-util-gl.h"
  25
  26 /**
  27  * @file negative-readpixels.c
  28  *
  29  * From the EXT_framebuffer_multisample spec:
  30  *
  31  *     "The error INVALID_OPERATION_EXT is generated if ReadPixels,
  32  *      CopyPixels, CopyTex{Sub}Image*, CopyColor{Sub}Table, or
  33  *      CopyConvolutionFilter* is called while
  34  *      READ_FRAMEBUFFER_BINDING_EXT is non-zero, the read framebuffer
  35  *      is framebuffer complete, and the value of SAMPLE_BUFFERS for
  36  *      the read framebuffer is greater than zero."
  37  */
  38
  39 PIGLIT_GL_TEST_CONFIG_BEGIN
  40
  41         config.supports_gl_compat_version = 10;
  42
  43         config.window_visual = PIGLIT_GL_VISUAL_DOUBLE | PIGLIT_GL_VISUAL_RGBA;
  44         config.khr_no_error_support = PIGLIT_HAS_ERRORS;
  45
  46 PIGLIT_GL_TEST_CONFIG_END
  47
  48 enum piglit_result
  49 piglit_display(void)
  50 {
  51         /* UNREACHED */
  52         return PIGLIT_FAIL;
  53 }
  54
  55 void
  56 piglit_init(int argc, char **argv)
  57 {
  58         GLint max_samples;
  59         GLuint rb, fb;
  60         GLenum status;
  61         float data[4];
  62
  63         piglit_require_extension("GL_EXT_framebuffer_multisample");
  64
  65         glGetIntegerv(GL_MAX_SAMPLES, &max_samples);
  66
  67         glGenFramebuffersEXT(1, &fb);
  68         glBindFramebufferEXT(GL_FRAMEBUFFER, fb);
  69
  70         glGenRenderbuffersEXT(1, &rb);
  71         glBindRenderbufferEXT(GL_RENDERBUFFER, rb);
  72         glRenderbufferStorageMultisampleEXT(GL_RENDERBUFFER, max_samples,
  73                                             GL_RGBA, 1, 1);
  74
  75         glFramebufferRenderbufferEXT(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
  76                                      GL_RENDERBUFFER, rb);
  77
  78         glDrawBuffer(GL_COLOR_ATTACHMENT0);
  79         glReadBuffer(GL_COLOR_ATTACHMENT0);
  80
  81         status = glCheckFramebufferStatusEXT(GL_FRAMEBUFFER);
  82         if (status != GL_FRAMEBUFFER_COMPLETE_EXT) {
  83                 fprintf(stderr, "FBO incomplete\n");
  84                 piglit_report_result(PIGLIT_FAIL);
  85         }
  86
  87         /* Finally, the actual test! */
  88         glReadPixels(0, 0, 1, 1, GL_RGBA, GL_FLOAT, data);
  89         if (!piglit_check_gl_error(GL_INVALID_OPERATION))
  90                 piglit_report_result(PIGLIT_FAIL);
  91
  92         glDeleteRenderbuffersEXT(1, &rb);
  93         glDeleteFramebuffersEXT(1, &fb);
  94
  95         piglit_report_result(PIGLIT_PASS);
  96 }