tests/shaders/glsl-vs-texturematrix-2.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-texturematrix-2.c
  29  *
  30  * Tests that we can access gl_TextureMatrix[n] in the vertex shader.
  31  *
  32  * Compared to glsl-vs-texturematrix-1, this uses varying access of the array.
  33  */
  34
  35 #include "piglit-util-gl.h"
  36
  37 PIGLIT_GL_TEST_CONFIG_BEGIN
  38
  39         config.supports_gl_compat_version = 10;
  40
  41         config.window_visual = PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_DOUBLE;
  42
  43 PIGLIT_GL_TEST_CONFIG_END
  44
  45 static GLint prog;
  46
  47 enum piglit_result
  48 piglit_display(void)
  49 {
  50         GLboolean pass = GL_TRUE;
  51         static const float red[]   = {1.0, 0.0, 0.0, 1.0};
  52         static const float green[] = {0.0, 1.0, 0.0, 1.0};
  53         static const float blue[]  = {0.0, 0.0, 1.0, 1.0};
  54         static const float white[] = {1.0, 1.0, 1.0, 1.0};
  55         GLuint tex;
  56
  57         glActiveTexture(GL_TEXTURE1);
  58         tex = piglit_rgbw_texture(GL_RGBA, 8, 8, GL_FALSE, GL_FALSE, GL_UNSIGNED_NORMALIZED);
  59         glEnable(GL_TEXTURE_2D);
  60
  61         glMatrixMode(GL_TEXTURE);
  62         glLoadIdentity();
  63         glRotatef(90, 0, 0, 1);
  64
  65         piglit_draw_rect(-1, -1, 2, 2);
  66
  67         pass = piglit_probe_pixel_rgba(piglit_width * 1 / 4,
  68                                        piglit_height * 1 / 4,
  69                                        blue) && pass;
  70         pass = piglit_probe_pixel_rgba(piglit_width * 3 / 4,
  71                                        piglit_height * 1 / 4,
  72                                        red) && pass;
  73         pass = piglit_probe_pixel_rgba(piglit_width * 1 / 4,
  74                                        piglit_height * 3 / 4,
  75                                        white) && pass;
  76         pass = piglit_probe_pixel_rgba(piglit_width * 3 / 4,
  77                                        piglit_height * 3 / 4,
  78                                        green) && pass;
  79
  80         piglit_present_results();
  81
  82         glDeleteTextures(1, &tex);
  83
  84         return pass ? PIGLIT_PASS : PIGLIT_FAIL;
  85 }
  86
  87 void piglit_init(int argc, char **argv)
  88 {
  89         GLint vs, fs;
  90         int loc;
  91
  92         piglit_require_gl_version(20);
  93
  94         vs = piglit_compile_shader(GL_VERTEX_SHADER,
  95                                    "shaders/glsl-vs-texturematrix-2.vert");
  96         fs = piglit_compile_shader(GL_FRAGMENT_SHADER,
  97                                    "shaders/glsl-tex.frag");
  98
  99         prog = piglit_link_simple_program(vs, fs);
 100
 101         glUseProgram(prog);
 102
 103         loc = glGetUniformLocation(prog, "sampler");
 104         glUniform1i(loc, 1);
 105         loc = glGetUniformLocation(prog, "i");
 106         glUniform1f(loc, 1.0);
 107 }