tests/spec/ext_framebuffer_multisample/negative-mismatched-samples.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 samples.c
  28  *
  29  * From the EXT_framebuffer_multisample spec:
  30  *
  31  *     "Modification to 4.4.4.2 (Framebuffer Completeness)
  32  *
  33  *          Add an entry to the bullet list:
  34  *
  35  *          * The value of RENDERBUFFER_SAMPLES_EXT is the same for all attached
  36  *            images.
  37  *            { FRAMEBUFFER_INCOMPLETE_MULTISAMPLE_EXT }"
  38  */
  39
  40 PIGLIT_GL_TEST_CONFIG_BEGIN
  41
  42         config.supports_gl_compat_version = 10;
  43
  44         config.window_visual = PIGLIT_GL_VISUAL_DOUBLE | PIGLIT_GL_VISUAL_RGBA;
  45         config.khr_no_error_support = PIGLIT_NO_ERRORS;
  46
  47 PIGLIT_GL_TEST_CONFIG_END
  48
  49 enum piglit_result
  50 piglit_display(void)
  51 {
  52         /* UNREACHED */
  53         return PIGLIT_FAIL;
  54 }
  55
  56 static bool
  57 test_buffers(GLuint rb0, GLuint samples0,
  58              GLuint rb1, GLuint samples1)
  59 {
  60         GLenum status;
  61
  62         if (rb0 == rb1)
  63                 return true;
  64
  65         glFramebufferRenderbufferEXT(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
  66                                      GL_RENDERBUFFER, rb0);
  67         glFramebufferRenderbufferEXT(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT1,
  68                                      GL_RENDERBUFFER, rb1);
  69
  70         status = glCheckFramebufferStatusEXT(GL_FRAMEBUFFER);
  71         if (samples0 != samples1) {
  72                 if (status != GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE) {
  73                         fprintf(stderr,
  74                                 "Framebuffer with %d and %d samples: "
  75                                 "reported 0x%x, not "
  76                                 "GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE",
  77                                 samples0, samples1, status);
  78                         return false;
  79                 }
  80         } else if (status != GL_FRAMEBUFFER_COMPLETE) {
  81                 fprintf(stderr,
  82                         "Framebuffer with %d and %d samples incomplete: "
  83                         "reported 0x%x, not GL_FRAMEBUFFER_COMPLETE\n",
  84                         samples0, samples1, status);
  85                 return false;
  86         }
  87         return true;
  88 }
  89
  90 void
  91 piglit_init(int argc, char **argv)
  92 {
  93         GLint max_samples, max_draw_buffers;
  94         GLuint *rb, fb;
  95         GLint *rb_samples;
  96         bool pass = true;
  97         int i, buf0, buf1;
  98         static const GLenum buffers[2] = {
  99                 GL_COLOR_ATTACHMENT0,
 100                 GL_COLOR_ATTACHMENT1
 101         };
 102
 103         piglit_require_extension("GL_EXT_framebuffer_multisample");
 104         piglit_require_extension("GL_ARB_draw_buffers");
 105
 106         glGetIntegerv(GL_MAX_DRAW_BUFFERS, &max_draw_buffers);
 107         if (max_draw_buffers < 2) {
 108                 printf("test requires 2 draw buffers.\n");
 109                 piglit_report_result(PIGLIT_SKIP);
 110         }
 111
 112         glGetIntegerv(GL_MAX_SAMPLES, &max_samples);
 113
 114         rb = malloc(max_samples * sizeof(*rb));
 115         rb_samples = malloc(max_samples * sizeof(*rb_samples));
 116
 117         glGenFramebuffersEXT(1, &fb);
 118         glBindFramebufferEXT(GL_FRAMEBUFFER, fb);
 119
 120         glDrawBuffers(2, buffers);
 121         glReadBuffer(GL_COLOR_ATTACHMENT0);
 122
 123         glGenRenderbuffers(max_samples, rb);
 124
 125         for (i = 0; i < max_samples; i++) {
 126                 glBindRenderbufferEXT(GL_RENDERBUFFER, rb[i]);
 127                 glRenderbufferStorageMultisampleEXT(GL_RENDERBUFFER,
 128                                                     i,
 129                                                     GL_RGBA, 1, 1);
 130
 131                 glGetRenderbufferParameterivEXT(GL_RENDERBUFFER,
 132                                                 GL_RENDERBUFFER_SAMPLES,
 133                                                 &rb_samples[i]);
 134         }
 135
 136         for (buf0 = 0; buf0 < max_samples; buf0++) {
 137                 for (buf1 = 0; buf1 < max_samples; buf1++) {
 138                         pass = test_buffers(rb[buf0], rb_samples[buf0],
 139                                             rb[buf1], rb_samples[buf1]) && pass;
 140                 }
 141         }
 142
 143         glDeleteFramebuffersEXT(1, &fb);
 144         glDeleteRenderbuffersEXT(max_samples, rb);
 145
 146         free(rb);
 147         free(rb_samples);
 148
 149         piglit_report_result(pass ? PIGLIT_PASS : PIGLIT_FAIL);
 150 }