tests/shaders/glsl-getactiveuniform-array-size.c

   1 /*
   2  * Copyright © 2009 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  * Authors:
  24  *    Eric Anholt <eric@anholt.net>
  25  *
  26  */
  27
  28 /** @file glsl-vs-sqrt-zero.c
  29  *
  30  * Tests that sqrt(0.0) in the VS produces 0.0.
  31  */
  32
  33 #include "piglit-util-gl.h"
  34
  35 PIGLIT_GL_TEST_CONFIG_BEGIN
  36
  37         config.supports_gl_compat_version = 10;
  38
  39         config.window_visual = PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_DOUBLE;
  40
  41 PIGLIT_GL_TEST_CONFIG_END
  42
  43 static GLint prog;
  44
  45 enum piglit_result
  46 piglit_display(void)
  47 {
  48         /* unreached */
  49         return PIGLIT_FAIL;
  50 }
  51
  52 void
  53 piglit_init(int argc, char **argv)
  54 {
  55         GLboolean pass = GL_TRUE;
  56         GLint vs, fs, len;
  57         char *name;
  58         GLsizei size;
  59         GLenum type;
  60
  61         piglit_require_gl_version(20);
  62
  63         vs = piglit_compile_shader(GL_VERTEX_SHADER,
  64                                    "shaders/glsl-getactiveuniform-array-size.vert");
  65         fs = piglit_compile_shader(GL_FRAGMENT_SHADER,
  66                                    "shaders/glsl-color.frag");
  67
  68         prog = piglit_link_simple_program(vs, fs);
  69
  70         glGetProgramiv(prog, GL_ACTIVE_UNIFORM_MAX_LENGTH, &len);
  71         name = malloc(len + 20);
  72
  73         glGetActiveUniform(prog, 0, len + 20, &len, &size, &type, name);
  74
  75         /* From page 81 (page 89 of the PDF) of the OpenGL 2.1 specification:
  76          *
  77          *     If one or more elements of an array are active,
  78          *     GetActiveUniform will return the name of the array in
  79          *     name, subject to the restrictions listed above. The
  80          *     type of the array is returned in type. The size
  81          *     parameter contains the highest array element index
  82          *     used, plus one.
  83          */
  84
  85         if (size != 25) {
  86                 printf("Unexpected active uniform size "
  87                        "(saw %d, expected %d)\n", size, 25);
  88                 pass = GL_FALSE;
  89         }
  90
  91         if (pass)
  92                 piglit_report_result(PIGLIT_PASS);
  93         else
  94                 piglit_report_result(PIGLIT_FAIL);
  95 }