tests/shaders/glsl-link-initializer-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
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   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 glsl-link-initializer-01.c
  26  * Test conflicting variable initializers.
  27  *
  28  * Each of the 3 shaders involved in this test have a global variable called
  29  * \c global_variable.  Two of the shaders have (differing) initializers for
  30  * this variable, and the other lacks an initalizer.  The test verifies that
  31  * linking the 3 shaders together results in an error due to the conflicting
  32  * initializer.
  33  *
  34  * \author Ian Romanick
  35  */
  36
  37 #include "piglit-util.h"
  38
  39 int piglit_width = 100, piglit_height = 100;
  40 int piglit_window_mode = GLUT_RGB | GLUT_DOUBLE;
  41
  42 enum piglit_result
  43 piglit_display(void)
  44 {
  45         return PIGLIT_FAILURE;
  46 }
  47
  48 /**
  49  * Don't use piglit_link_check_status because it will log a message to stderr
  50  * when the link fails.  Since this test wants the link to fail, logging an
  51  * error message will cause the test to be listed as "warn" instead of "pass".
  52  */
  53 GLboolean
  54 link_check_status(GLint prog)
  55 {
  56         GLint ok;
  57
  58         glGetProgramiv(prog, GL_LINK_STATUS, &ok);
  59         if (!ok) {
  60                 GLchar *info;
  61                 GLint size;
  62
  63                 glGetProgramiv(prog, GL_INFO_LOG_LENGTH, &size);
  64                 info = malloc(size);
  65
  66                 glGetProgramInfoLog(prog, size, NULL, info);
  67                 printf("Failed to link: %s\n", info);
  68
  69                 free(info);
  70         }
  71
  72         return ok;
  73 }
  74
  75 void piglit_init(int argc, char **argv)
  76 {
  77         GLint vert[3];
  78         GLint prog;
  79         GLboolean ok;
  80
  81         if (!GLEW_VERSION_2_0) {
  82                 printf("Requires OpenGL 2.0\n");
  83                 piglit_report_result(PIGLIT_SKIP);
  84         }
  85
  86         vert[0] =
  87                 piglit_compile_shader(GL_VERTEX_SHADER,
  88                                       "shaders/glsl-link-initializer-01a.vert");
  89         vert[1] =
  90                 piglit_compile_shader(GL_VERTEX_SHADER,
  91                                       "shaders/glsl-link-initializer-01b.vert");
  92         vert[2] =
  93                 piglit_compile_shader(GL_VERTEX_SHADER,
  94                                       "shaders/glsl-link-initializer-01c.vert");
  95         prog = glCreateProgram();
  96         glAttachShader(prog, vert[0]);
  97         glAttachShader(prog, vert[1]);
  98         glAttachShader(prog, vert[2]);
  99         glLinkProgram(prog);
 100
 101         ok = link_check_status(prog);
 102         if (ok)
 103                 fprintf(stderr,
 104                         "Program should have failed linking, but "
 105                         "it was (incorrectly) successful.\n");
 106
 107         piglit_report_result((!ok) ? PIGLIT_SUCCESS : PIGLIT_FAILURE);
 108 }
 109