tests/spec/ati_fragment_shader/render-precedence.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  * - precedence between ATI_fragment_shader, ARB_fragment_program, GLSL
  27  *   - ARB_fragment_program overrides ATI_fragment_shader
  28  *   - GLSL overrides both
  29  */
  30
  31 #include "piglit-util-gl.h"
  32
  33 PIGLIT_GL_TEST_CONFIG_BEGIN
  34
  35         config.supports_gl_compat_version = 10;
  36         config.window_visual = PIGLIT_GL_VISUAL_DOUBLE | PIGLIT_GL_VISUAL_RGBA;
  37
  38 PIGLIT_GL_TEST_CONFIG_END
  39
  40 static const float color1[] = {0.2, 0.3, 0.8};
  41 static const float color2[] = {0.9, 0.8, 0.3};
  42 static const float texcoord[] = {0.2, 0.7, 0.4};
  43
  44 static bool have_fp = false;
  45 static bool have_fs = false;
  46
  47 static GLuint glslprog;
  48
  49 enum piglit_result
  50 piglit_display(void)
  51 {
  52         bool pass = true;
  53
  54         piglit_ortho_projection(piglit_width, piglit_height, GL_FALSE);
  55
  56         glClearColor(1.0, 0.0, 0.0, 1.0);
  57         glClear(GL_COLOR_BUFFER_BIT);
  58
  59         glColor3fv(color1);
  60         glSecondaryColor3fvEXT(color2);
  61         glTexCoord3fv(texcoord);
  62
  63         glEnable(GL_FRAGMENT_SHADER_ATI);
  64         piglit_draw_rect(0, 0, piglit_width / 4, piglit_height);
  65         if (have_fp) {
  66                 glEnable(GL_FRAGMENT_PROGRAM_ARB);
  67                 piglit_draw_rect(piglit_width / 4, 0,
  68                                  piglit_width / 4, piglit_height);
  69                 glDisable(GL_FRAGMENT_PROGRAM_ARB);
  70         }
  71         if (have_fs) {
  72                 glUseProgram(glslprog);
  73                 piglit_draw_rect(2 * piglit_width / 4, 0,
  74                                  piglit_width / 4, piglit_height);
  75                 glUseProgram(0);
  76         }
  77         if (have_fp && have_fs) {
  78                 glUseProgram(glslprog);
  79                 glEnable(GL_FRAGMENT_PROGRAM_ARB);
  80                 piglit_draw_rect(3 * piglit_width / 4, 0,
  81                                  piglit_width / 4, piglit_height);
  82                 glUseProgram(0);
  83                 glDisable(GL_FRAGMENT_PROGRAM_ARB);
  84         }
  85         glDisable(GL_FRAGMENT_SHADER_ATI);
  86
  87         pass = pass && piglit_probe_rect_rgb(0, 0,
  88                                              piglit_width / 4,
  89                                              piglit_height, color2);
  90         if (have_fp)
  91                 pass = pass && piglit_probe_rect_rgb(piglit_width / 4, 0,
  92                                                      piglit_width / 4,
  93                                                      piglit_height, texcoord);
  94         if (have_fs)
  95                 pass = pass && piglit_probe_rect_rgb(2 * piglit_width / 4, 0,
  96                                                      piglit_width / 4,
  97                                                      piglit_height, color1);
  98         if (have_fp && have_fs)
  99                 pass = pass && piglit_probe_rect_rgb(3 * piglit_width / 4, 0,
 100                                                      piglit_width / 4,
 101                                                      piglit_height, color1);
 102
 103         piglit_present_results();
 104
 105         pass &= piglit_check_gl_error(GL_NO_ERROR);
 106
 107         return pass ? PIGLIT_PASS : PIGLIT_FAIL;
 108 }
 109
 110 const char *arbfp_str =
 111 "!!ARBfp1.0\n"
 112 "MOV result.color, fragment.texcoord[0];\n"
 113 "END";
 114
 115 const char *glslfs_str =
 116 "void main() { gl_FragColor = gl_Color; }";
 117
 118 void
 119 piglit_init(int argc, char **argv)
 120 {
 121         piglit_require_extension("GL_ATI_fragment_shader");
 122
 123         /* create shaders */
 124
 125         glBeginFragmentShaderATI();
 126         glColorFragmentOp1ATI(GL_MOV_ATI, GL_REG_0_ATI, GL_NONE, GL_NONE,
 127                         GL_SECONDARY_INTERPOLATOR_ATI, GL_NONE, GL_NONE);
 128         glEndFragmentShaderATI();
 129
 130         if (piglit_is_extension_supported("GL_ARB_fragment_program")) {
 131                 have_fp = true;
 132                 piglit_compile_program(GL_FRAGMENT_PROGRAM_ARB, arbfp_str);
 133         }
 134
 135         if (piglit_is_extension_supported("GL_ARB_fragment_shader")) {
 136                 have_fs = true;
 137                 glslprog = piglit_build_simple_program(NULL, glslfs_str);
 138         }
 139
 140         if (!piglit_check_gl_error(GL_NO_ERROR))
 141                 piglit_report_result(PIGLIT_FAIL);
 142 }