tests/spec/arb_uniform_buffer_object/getuniformlocation.c

   1 /*
   2  * Copyright © 2012 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
  21  * DEALINGS IN THE SOFTWARE.
  22  */
  23
  24 /** @file getuniformlocation.c
  25  *
  26  * Tests that glGetUniformLocation() returns no location for UBO variables.
  27  *
  28  * From the GL_ARB_uniform_buffer_object spec:
  29  *
  30  *      To find the location within a program object of an active uniform
  31  *      variable associated with the default uniform block, use the command
  32  *
  33  *          int GetUniformLocation(uint program, const char *name);
  34  *
  35  *      ... The value -1 will be returned if <name> does not
  36  *      correspond to an active uniform variable name in <program>, if
  37  *      <name> is associated with a named uniform block..."
  38  */
  39
  40 #include "piglit-util-gl.h"
  41
  42 PIGLIT_GL_TEST_CONFIG_BEGIN
  43
  44         config.supports_gl_compat_version = 10;
  45
  46         config.window_visual = PIGLIT_GL_VISUAL_DOUBLE | PIGLIT_GL_VISUAL_RGBA;
  47         config.khr_no_error_support = PIGLIT_NO_ERRORS;
  48
  49 PIGLIT_GL_TEST_CONFIG_END
  50
  51 static GLuint prog;
  52
  53 static const char fs_source[] =
  54         "#extension GL_ARB_uniform_buffer_object : require\n"
  55         "\n"
  56         "uniform ub_a { vec4 a; };\n"
  57         "uniform vec4 b;\n"
  58         "\n"
  59         "void main()\n"
  60         "{\n"
  61         "       gl_FragColor = a + b;\n"
  62         "}\n";
  63
  64 void
  65 piglit_init(int argc, char **argv)
  66 {
  67         bool pass = true;
  68         int location;
  69
  70         piglit_require_extension("GL_ARB_uniform_buffer_object");
  71
  72         prog = piglit_build_simple_program(NULL, fs_source);
  73
  74         location = glGetUniformLocation(prog, "a");
  75         if (location != -1) {
  76                 printf("Uniform \"a\" had location %d, expected -1\n", location);
  77                 pass = false;
  78         }
  79
  80         location = glGetUniformLocation(prog, "b");
  81         if (location == -1) {
  82                 printf("Uniform \"b\" had location %d\n", location);
  83                 pass = false;
  84         }
  85
  86         if (!pass)
  87                 printf("Source:\n%s", fs_source);
  88
  89         piglit_report_result(pass ? PIGLIT_PASS : PIGLIT_FAIL);
  90 }
  91
  92 enum piglit_result piglit_display(void)
  93 {
  94         /* UNREACHED */
  95         return PIGLIT_FAIL;
  96 }