tests/shaders/glsl-vs-mvp-statechange.c

   1 /*
   2  * Copyright © 2011 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
  24 /** @file glsl-vs-mvp-statechange.c
  25  *
  26  * Tests that changing just gl_ModelViewProjectionMatrix state is
  27  * reflected in program execution.
  28  */
  29
  30 #include "piglit-util-gl.h"
  31
  32 PIGLIT_GL_TEST_CONFIG_BEGIN
  33
  34         config.supports_gl_compat_version = 10;
  35
  36         config.window_visual = PIGLIT_GL_VISUAL_RGBA | PIGLIT_GL_VISUAL_DOUBLE;
  37
  38 PIGLIT_GL_TEST_CONFIG_END
  39
  40 enum piglit_result
  41 piglit_display(void)
  42 {
  43         GLboolean pass = GL_TRUE;
  44         static const float green[] = {0.0, 1.0, 0.0, 0.0};
  45
  46         glClearColor(1.0, 0.0, 0.0, 0.0);
  47         glClear(GL_COLOR_BUFFER_BIT);
  48
  49         glMatrixMode(GL_MODELVIEW);
  50         glLoadIdentity();
  51
  52         glMatrixMode(GL_PROJECTION);
  53
  54         glLoadIdentity();
  55         glOrtho(0, 1, 0, 1, -1, 1);
  56         piglit_draw_rect(0.0, 0.0, 0.5, 1.0);
  57
  58         glLoadIdentity();
  59         glOrtho(0, 2, 0, 2, -1, 1);
  60         piglit_draw_rect(1.0, 0.0, 1.0, 2.0);
  61
  62         pass &= piglit_probe_rect_rgba(0, 0, piglit_width, piglit_height,
  63                                        green);
  64
  65         piglit_present_results();
  66
  67         return pass ? PIGLIT_PASS : PIGLIT_FAIL;
  68 }
  69
  70 void
  71 piglit_init(int argc, char **argv)
  72 {
  73         GLint vs, fs, prog;
  74         const char *fs_source =
  75                 "void main()\n"
  76                 "{\n"
  77                 "       gl_FragColor = vec4(0.0, 1.0, 0.0, 0.0);\n"
  78                 "}\n";
  79
  80         piglit_require_gl_version(20);
  81
  82         piglit_ortho_projection(piglit_width, piglit_height, GL_FALSE);
  83
  84         vs = piglit_compile_shader(GL_VERTEX_SHADER,
  85                                    "shaders/glsl-mvp.vert");
  86         fs = piglit_compile_shader_text(GL_FRAGMENT_SHADER, fs_source);
  87
  88         prog = piglit_link_simple_program(vs, fs);
  89
  90         glUseProgram(prog);
  91 }