tests/shaders/glsl-vs-texturematrix-1.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-1.c
  29  *
  30  * Tests that we can access gl_TextureMatrix[1] in the vertex shader.
  31  */
  32
  33 #include "piglit-util.h"
  34
  35 int piglit_width = 100, piglit_height = 100;
  36 int piglit_window_mode = GLUT_RGB | GLUT_DOUBLE;
  37
  38 static GLint prog;
  39
  40 enum piglit_result
  41 piglit_display(void)
  42 {
  43         GLboolean pass = GL_TRUE;
  44         static const float red[]   = {1.0, 0.0, 0.0, 1.0};
  45         static const float green[] = {0.0, 1.0, 0.0, 1.0};
  46         static const float blue[]  = {0.0, 0.0, 1.0, 1.0};
  47         static const float white[] = {1.0, 1.0, 1.0, 1.0};
  48         GLuint tex;
  49
  50         glActiveTexture(GL_TEXTURE1);
  51         tex = piglit_rgbw_texture(GL_RGBA, 8, 8, GL_FALSE);
  52         glEnable(GL_TEXTURE_2D);
  53
  54         glMatrixMode(GL_TEXTURE);
  55         glLoadIdentity();
  56         glRotatef(90, 0, 0, 1);
  57
  58         piglit_draw_rect(-1, -1, 2, 2);
  59
  60         pass = piglit_probe_pixel_rgba(piglit_width * 1 / 4,
  61                                        piglit_height * 1 / 4,
  62                                        blue) && pass;
  63         pass = piglit_probe_pixel_rgba(piglit_width * 3 / 4,
  64                                        piglit_height * 1 / 4,
  65                                        red) && pass;
  66         pass = piglit_probe_pixel_rgba(piglit_width * 1 / 4,
  67                                        piglit_height * 3 / 4,
  68                                        white) && pass;
  69         pass = piglit_probe_pixel_rgba(piglit_width * 3 / 4,
  70                                        piglit_height * 3 / 4,
  71                                        green) && pass;
  72
  73         glutSwapBuffers();
  74
  75         glDeleteTextures(1, &tex);
  76
  77         return pass ? PIGLIT_SUCCESS : PIGLIT_FAILURE;
  78 }
  79
  80 void piglit_init(int argc, char **argv)
  81 {
  82         GLint vs, fs;
  83         int loc;
  84
  85         if (!GLEW_VERSION_2_0) {
  86                 printf("Requires OpenGL 2.0\n");
  87                 piglit_report_result(PIGLIT_SKIP);
  88         }
  89
  90         vs = piglit_compile_shader(GL_VERTEX_SHADER,
  91                                    "shaders/glsl-vs-texturematrix-1.vert");
  92         fs = piglit_compile_shader(GL_FRAGMENT_SHADER,
  93                                    "shaders/glsl-tex.frag");
  94
  95         prog = piglit_link_simple_program(vs, fs);
  96
  97         glUseProgram(prog);
  98
  99         loc = glGetUniformLocation(prog, "sampler");
 100         glUniform1i(loc, 1);
 101 }