tests/spec/arb_uniform_buffer_object/getactiveuniformsiv-uniform-array-stride.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
   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
  21  * DEALINGS IN THE SOFTWARE.
  22  */
  23
  24 /** @file getactiveuniformsiv-uniform-array-stride.c
  25  *
  26  * Tests that (std140 layout) uniform array strides are reported
  27  * correctly through the API.
  28  */
  29
  30 #include "piglit-util-gl.h"
  31
  32 PIGLIT_GL_TEST_CONFIG_BEGIN
  33
  34         config.supports_gl_compat_version = 10;
  35         config.window_visual = PIGLIT_GL_VISUAL_DOUBLE | PIGLIT_GL_VISUAL_RGBA;
  36         config.khr_no_error_support = PIGLIT_NO_ERRORS;
  37
  38 PIGLIT_GL_TEST_CONFIG_END
  39
  40 static const char fs_source[] =
  41         "#extension GL_ARB_uniform_buffer_object : require\n"
  42         "\n"
  43         "layout(std140) uniform ub {\n"
  44         "       vec4 a;\n"
  45         "       vec4 b[2];\n"
  46         "       float c[2];\n"
  47         "       mat4 d[2];\n"
  48         "};\n"
  49         "uniform vec4 e;\n"
  50         "uniform vec4 f[2];\n"
  51         "\n"
  52         "void main()\n"
  53         "{\n"
  54         "       gl_FragColor = a + b[0] + vec4(c[0]) + d[0][0] + e + f[0];\n"
  55         "}\n";
  56
  57 void
  58 piglit_init(int argc, char **argv)
  59 {
  60         bool pass = true;
  61         GLuint prog;
  62         const char *uniform_names[] = { "a", "b", "c", "d", "e", "f" };
  63         int expected_strides[] = { 0, 16, 16, 64, -1, -1 };
  64         GLint strides[ARRAY_SIZE(uniform_names)];
  65         GLuint uniform_indices[ARRAY_SIZE(uniform_names)];
  66         int i;
  67
  68         piglit_require_extension("GL_ARB_uniform_buffer_object");
  69
  70         prog = piglit_build_simple_program(NULL, fs_source);
  71
  72         glGetUniformIndices(prog, ARRAY_SIZE(uniform_names), uniform_names,
  73                             uniform_indices);
  74         glGetActiveUniformsiv(prog, ARRAY_SIZE(uniform_names), uniform_indices,
  75                               GL_UNIFORM_ARRAY_STRIDE, strides);
  76         for (i = 0; i < ARRAY_SIZE(uniform_names); i++) {
  77                 printf("Uniform \"%s\": stride %d, expected %d",
  78                        uniform_names[i],
  79                        strides[i],
  80                        expected_strides[i]);
  81
  82                 if (strides[i] != expected_strides[i]) {
  83                         printf(" FAIL");
  84                         pass = false;
  85                 }
  86
  87                 printf("\n");
  88         }
  89
  90         piglit_report_result(pass ? PIGLIT_PASS : PIGLIT_FAIL);
  91 }
  92
  93 enum piglit_result piglit_display(void)
  94 {
  95         /* UNREACHED */
  96         return PIGLIT_FAIL;
  97 }