tests/shaders/glsl-vs-functions.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
   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-functions.c
  29  *
  30  * Tests that function calls in the VS work.
  31  *
  32  * This was designed to catch a regression I introduced in the 965 driver
  33  * with jumps to function calls being wrong.
  34  */
  35
  36 #include "piglit-util-gl.h"
  37
  38 PIGLIT_GL_TEST_CONFIG_BEGIN
  39
  40         config.supports_gl_compat_version = 10;
  41
  42         config.window_visual = PIGLIT_GL_VISUAL_RGBA | PIGLIT_GL_VISUAL_DOUBLE;
  43
  44 PIGLIT_GL_TEST_CONFIG_END
  45
  46 static GLint prog;
  47 static int args1_location;
  48
  49 enum piglit_result
  50 piglit_display(void)
  51 {
  52         GLboolean pass = GL_TRUE;
  53         static const float args1[] = {0.0, 1.0, 1.0, 0.0};
  54         static const float result[] = {0.0, 1.0, 0.0, 1.0};
  55
  56         glUniform4fv(args1_location, 1, args1);
  57         piglit_draw_rect(0, 0, piglit_width, piglit_height);
  58
  59         pass &= piglit_probe_pixel_rgba(piglit_width / 2, piglit_height / 2,
  60                                         result);
  61
  62         piglit_present_results();
  63
  64         return pass ? PIGLIT_PASS : PIGLIT_FAIL;
  65 }
  66
  67 void
  68 piglit_init(int argc, char **argv)
  69 {
  70         GLint vs, fs;
  71
  72         piglit_require_gl_version(20);
  73
  74         piglit_ortho_projection(piglit_width, piglit_height, GL_FALSE);
  75
  76         vs = piglit_compile_shader(GL_VERTEX_SHADER,
  77                                    "shaders/glsl-vs-functions.vert");
  78         fs = piglit_compile_shader(GL_FRAGMENT_SHADER,
  79                                    "shaders/glsl-color.frag");
  80
  81         prog = piglit_link_simple_program(vs, fs);
  82
  83         args1_location = glGetUniformLocation(prog, "args1");
  84
  85         glUseProgram(prog);
  86 }