tests/spec/arb_uniform_buffer_object/referenced-by-shader.c

   1 /*
   2  * Copyright © 2012, 2013 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
  21  * DEALINGS IN THE SOFTWARE.
  22  */
  23
  24 /** @file referenced-by-shader.c
  25  *
  26  * From the GL_ARB_uniform_buffer_object spec and
  27  * Section 2.11.4(Uniform Variables) of OpenGL 3.2 Core:
  28  *
  29  *     "If <pname> is UNIFORM_BLOCK_REFERENCED_BY_VERTEX_SHADER,
  30  *      UNIFORM_BLOCK_REFERENCED_BY_GEOMETRY_SHADER, or
  31  *      UNIFORM_BLOCK_REFERENCED_BY_FRAGMENT_SHADER, then a boolean
  32  *      value indicating whether the uniform block identified by
  33  *      <uniformBlockIndex> is referenced by the vertex, geometry, or
  34  *      fragment programming stage of <program>, respectively, is
  35  *      returned."
  36  */
  37
  38 #include "piglit-util-gl.h"
  39
  40 PIGLIT_GL_TEST_CONFIG_BEGIN
  41
  42         config.supports_gl_compat_version = 10;
  43         config.supports_gl_core_version = 31;
  44         config.khr_no_error_support = PIGLIT_NO_ERRORS;
  45
  46 PIGLIT_GL_TEST_CONFIG_END
  47
  48 void
  49 piglit_init(int argc, char **argv)
  50 {
  51         bool pass = true;
  52         unsigned int i;
  53         GLuint vs, gs, fs, prog;
  54         const char *vs_source =
  55                 "%s"
  56                 "uniform vs { float v; };\n"
  57                 "uniform vsgs { float vg; };\n"
  58                 "uniform vsfs { float vf; };\n"
  59                 "uniform vsgsfs { float vgf; };\n"
  60                 "void main() {\n"
  61                 "       gl_Position = vec4(v + vg + vf + vgf);\n"
  62                 "}\n";
  63
  64         const char *gs_source =
  65                 "%s"
  66                 "layout(triangles) in;\n"
  67                 "layout(triangle_strip, max_vertices=3) out;\n"
  68                 "uniform gs { float g; };\n"
  69                 "uniform vsgs { float vg; };\n"
  70                 "uniform gsfs { float gf; };\n"
  71                 "uniform vsgsfs { float vgf; };\n"
  72                 "void main() {\n"
  73                 "       for(int i = 0; i < 3; i++) {\n"
  74                 "               gl_Position = vec4(g + vg + gf + vgf);\n"
  75                 "               EmitVertex();\n"
  76                 "       }\n"
  77                 "}\n";
  78
  79         const char *fs_source =
  80                 "%s"
  81                 "uniform fs { float f; };\n"
  82                 "uniform vsfs { float vf; };\n"
  83                 "uniform gsfs { float gf; };\n"
  84                 "uniform vsgsfs { float vgf; };\n"
  85                 "void main() {\n"
  86                 "       gl_FragColor = vec4(f + vf + gf + vgf);\n"
  87                 "}\n";
  88
  89         char name[10];
  90         bool use_gs = piglit_get_gl_version() >= 32;
  91         const char *header;
  92         char *temp_source;
  93         int num_uniforms_used = 0;
  94
  95         if (use_gs) {
  96                 header = "#version 150\n";
  97         } else {
  98                 header = "#extension GL_ARB_uniform_buffer_object : enable\n";
  99                 piglit_require_extension("GL_ARB_uniform_buffer_object");
 100         }
 101
 102         prog = glCreateProgram();
 103
 104         (void)!asprintf(&temp_source, vs_source, header);
 105         vs = piglit_compile_shader_text(GL_VERTEX_SHADER, temp_source);
 106         glAttachShader(prog, vs);
 107         free(temp_source);
 108
 109         if (use_gs) {
 110                 (void)!asprintf(&temp_source, gs_source, header);
 111                 gs = piglit_compile_shader_text(GL_GEOMETRY_SHADER, temp_source);
 112                 glAttachShader(prog, gs);
 113                 free(temp_source);
 114         }
 115
 116         (void)!asprintf(&temp_source, fs_source, header);
 117         fs = piglit_compile_shader_text(GL_FRAGMENT_SHADER, temp_source);
 118         glAttachShader(prog, fs);
 119         free(temp_source);
 120
 121         glLinkProgram(prog);
 122         if (!piglit_link_check_status(prog)) {
 123                 piglit_report_result(PIGLIT_FAIL);
 124         }
 125
 126         if (use_gs) {
 127                 num_uniforms_used = 7;
 128                 printf("            v g f\n");
 129         } else {
 130                 num_uniforms_used = 6;
 131                 printf("            v f\n");
 132         }
 133
 134         for (i = 0; i < num_uniforms_used; i++) {
 135                 GLint ref_vs = 0, ref_gs = 0, ref_fs = 0;
 136                 bool block_fail = false;
 137
 138                 glGetActiveUniformBlockName(prog, i, sizeof(name), NULL, name);
 139
 140                 glGetActiveUniformBlockiv(prog, i,
 141                                           GL_UNIFORM_BLOCK_REFERENCED_BY_VERTEX_SHADER,
 142                                           &ref_vs);
 143                 if (use_gs) {
 144                         glGetActiveUniformBlockiv(prog, i,
 145                                                   GL_UNIFORM_BLOCK_REFERENCED_BY_GEOMETRY_SHADER,
 146                                                   &ref_gs);
 147                 }
 148                 glGetActiveUniformBlockiv(prog, i,
 149                                           GL_UNIFORM_BLOCK_REFERENCED_BY_FRAGMENT_SHADER,
 150                                           &ref_fs);
 151
 152                 if (use_gs) {
 153                         printf("%10s: %d %d %d", name, ref_vs, ref_gs, ref_fs);
 154                 } else {
 155                         printf("%10s: %d %d", name, ref_vs, ref_fs);
 156                 }
 157
 158                 if ((strstr(name, "vs") != 0) != ref_vs)
 159                         block_fail = true;
 160                 if (use_gs) {
 161                         if ((strstr(name, "gs") != 0) != ref_gs)
 162                                 block_fail = true;
 163                 }
 164                 if ((strstr(name, "fs") != 0) != ref_fs)
 165                         block_fail = true;
 166
 167                 if (block_fail) {
 168                         printf(" FAIL");
 169                         pass = false;
 170                 }
 171
 172                 printf("\n");
 173         }
 174
 175         piglit_report_result(pass ? PIGLIT_PASS : PIGLIT_FAIL);
 176 }
 177
 178 enum piglit_result piglit_display(void)
 179 {
 180         /* UNREACHED */
 181         return PIGLIT_FAIL;
 182 }
 183