tests/spec/ati_fragment_shader/render-constants.c

   1 /*
   2  * Copyright © 2017 Miklós Máté
   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 /**
  25  * Tests rendering with GL_ATI_fragment_shader:
  26  * - using local and global constants
  27  * - updating global constants
  28  */
  29
  30 #include "piglit-util-gl.h"
  31
  32 PIGLIT_GL_TEST_CONFIG_BEGIN
  33
  34         config.supports_gl_compat_version = 10;
  35         config.window_visual = PIGLIT_GL_VISUAL_DOUBLE | PIGLIT_GL_VISUAL_RGBA;
  36
  37 PIGLIT_GL_TEST_CONFIG_END
  38
  39 static const float color1[] = {0.4, 0.2, 0.6};
  40 static const float color2[] = {0.7, 0.2, 0.3};
  41 static const float color3[] = {0.1, 0.7, 0.2};
  42 static const float color4[] = {0.8, 0.1, 0.7};
  43
  44 static float result1p3[] = {0.0, 0.0, 0.0};
  45 static float result2p3[] = {0.0, 0.0, 0.0};
  46 static float result4p3[] = {0.0, 0.0, 0.0};
  47
  48 static const unsigned s_local = 42;
  49 static const unsigned s_global = 13;
  50
  51 enum piglit_result
  52 piglit_display(void)
  53 {
  54         bool pass = true;
  55
  56         piglit_ortho_projection(piglit_width, piglit_height, GL_FALSE);
  57
  58         glClearColor(1.0, 0.0, 0.0, 1.0);
  59         glClear(GL_COLOR_BUFFER_BIT);
  60
  61         glEnable(GL_FRAGMENT_SHADER_ATI);
  62         glSetFragmentShaderConstantATI(GL_CON_7_ATI, color2);
  63         glSetFragmentShaderConstantATI(GL_CON_4_ATI, color3);
  64         glBindFragmentShaderATI(s_global);
  65         piglit_draw_rect(0, 0, piglit_width / 4, piglit_height); /* 2+3 */
  66         glBindFragmentShaderATI(s_local);
  67         piglit_draw_rect(piglit_width / 4, 0,
  68                          piglit_width / 4, piglit_height); /* 1+3 */
  69         glBindFragmentShaderATI(s_global);
  70         glSetFragmentShaderConstantATI(GL_CON_7_ATI, color4);
  71         piglit_draw_rect(2 * piglit_width / 4, 0,
  72                          piglit_width / 4, piglit_height); /* 4+3 */
  73         glBindFragmentShaderATI(s_local);
  74         piglit_draw_rect(3 * piglit_width / 4, 0,
  75                          piglit_width / 4, piglit_height); /*1+3 */
  76         glDisable(GL_FRAGMENT_SHADER_ATI);
  77
  78         pass = pass && piglit_probe_rect_rgb(0, 0,
  79                                              piglit_width / 4,
  80                                              piglit_height, result2p3);
  81         pass = pass && piglit_probe_rect_rgb(piglit_width / 4, 0,
  82                                              piglit_width / 4,
  83                                              piglit_height, result1p3);
  84         pass = pass && piglit_probe_rect_rgb(2 * piglit_width / 4, 0,
  85                                              piglit_width / 4,
  86                                              piglit_height, result4p3);
  87         pass = pass && piglit_probe_rect_rgb(3 * piglit_width / 4, 0,
  88                                              piglit_width / 4,
  89                                              piglit_height, result1p3);
  90
  91         piglit_present_results();
  92
  93         pass &= piglit_check_gl_error(GL_NO_ERROR);
  94
  95         return pass ? PIGLIT_PASS : PIGLIT_FAIL;
  96 }
  97
  98 void
  99 piglit_init(int argc, char **argv)
 100 {
 101         unsigned u;
 102
 103         piglit_require_extension("GL_ATI_fragment_shader");
 104
 105         /* create identical shaders, but one of them has a local constant */
 106
 107         glBindFragmentShaderATI(s_global);
 108         glBeginFragmentShaderATI();
 109         glColorFragmentOp2ATI(GL_ADD_ATI, GL_REG_0_ATI, GL_NONE, GL_NONE,
 110                         GL_CON_7_ATI, GL_NONE, GL_NONE,
 111                         GL_CON_4_ATI, GL_NONE, GL_NONE);
 112         glEndFragmentShaderATI();
 113
 114         glBindFragmentShaderATI(s_local);
 115         glBeginFragmentShaderATI();
 116         glColorFragmentOp2ATI(GL_ADD_ATI, GL_REG_0_ATI, GL_NONE, GL_NONE,
 117                         GL_CON_7_ATI, GL_NONE, GL_NONE,
 118                         GL_CON_4_ATI, GL_NONE, GL_NONE);
 119         glSetFragmentShaderConstantATI(GL_CON_7_ATI, color1);
 120         glEndFragmentShaderATI();
 121
 122         /* compute the expected results */
 123
 124         for (u=0; u<3; u++) {
 125                 result1p3[u] = color1[u]+color3[u];
 126                 result2p3[u] = color2[u]+color3[u];
 127                 result4p3[u] = color4[u]+color3[u];
 128         }
 129
 130         if (!piglit_check_gl_error(GL_NO_ERROR))
 131                 piglit_report_result(PIGLIT_FAIL);
 132 }