tests/shaders/glsl-vs-mov-after-deref.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-mov-after-deref.c
  29  *
  30  * Tests moving of a temporary array dereference result.  Catches a
  31  * regression introduced in the Mesa optimizer.
  32  */
  33
  34 #include "piglit-util-gl.h"
  35
  36 PIGLIT_GL_TEST_CONFIG_BEGIN
  37
  38         config.supports_gl_compat_version = 10;
  39
  40         config.window_visual = PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_DOUBLE;
  41
  42 PIGLIT_GL_TEST_CONFIG_END
  43
  44 static GLint prog;
  45 static int index_location;
  46
  47 enum piglit_result
  48 piglit_display(void)
  49 {
  50         GLboolean pass = GL_TRUE;
  51         static const float green[] = {0.0, 1.0, 0.0, 0.0};
  52
  53         glClearColor(0.5, 0.5, 0.5, 0.5);
  54         glClear(GL_COLOR_BUFFER_BIT);
  55
  56         glUniform1i(index_location, 3);
  57         piglit_draw_rect(10, 10, 10, 10);
  58
  59         pass &= piglit_probe_pixel_rgb(15, 15, green);
  60
  61         piglit_present_results();
  62
  63         return pass ? PIGLIT_PASS : PIGLIT_FAIL;
  64 }
  65
  66 void piglit_init(int argc, char **argv)
  67 {
  68         GLint vs, fs;
  69
  70         piglit_require_gl_version(20);
  71
  72         piglit_ortho_projection(piglit_width, piglit_height, GL_FALSE);
  73
  74         vs = piglit_compile_shader(GL_VERTEX_SHADER,
  75                                    "shaders/glsl-vs-mov-after-deref.vert");
  76         fs = piglit_compile_shader(GL_FRAGMENT_SHADER,
  77                                    "shaders/glsl-color.frag");
  78
  79         prog = piglit_link_simple_program(vs, fs);
  80
  81         index_location = glGetUniformLocation(prog, "index");
  82
  83         glUseProgram(prog);
  84 }