tests/spec/arb_shading_language_420pack/execution/multiple-layout-qualifiers.c

   1 /*
   2  * Copyright © 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"),
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   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 multiple-layout-qualifiers.c
  25  *
  26  * From the GL_ARB_shading_language_420pack spec:
  27  *
  28  *     "More than one layout qualifier may appear in a single declaration. If
  29  *      the same layout-qualifier-name occurs in multiple layout qualifiers for
  30  *      the same declaration, the last one overrides the former ones."
  31  *
  32  *      For example
  33  *
  34  *          layout(column_major) layout(row_major)
  35  *
  36  *      results in the qualification being row_major."
  37  */
  38
  39 #include "piglit-util-gl.h"
  40
  41 PIGLIT_GL_TEST_CONFIG_BEGIN
  42
  43         config.supports_gl_compat_version = 10;
  44
  45         config.window_width = 10;
  46         config.window_height = 10;
  47         config.window_visual = PIGLIT_GL_VISUAL_RGBA | PIGLIT_GL_VISUAL_DOUBLE;
  48         config.khr_no_error_support = PIGLIT_NO_ERRORS;
  49
  50 PIGLIT_GL_TEST_CONFIG_END
  51
  52 static const char *source =
  53         "#extension GL_ARB_shading_language_420pack: enable\n"
  54         "#extension GL_ARB_uniform_buffer_object : enable\n"
  55         "\n"
  56         "/* Use std140 to avoid needing to ref every single uniform */\n"
  57         "layout(std140) uniform;\n"
  58         "\n"
  59         "layout(column_major) uniform a {\n"
  60         "       layout(column_major) layout(row_major) mat4 a_rm1;\n"
  61         "       layout(row_major) layout(column_major) mat4 a_cm1;\n"
  62         "};\n"
  63         "\n"
  64         "layout(row_major) uniform b {\n"
  65         "       layout(column_major) layout(row_major) mat4 a_rm2;\n"
  66         "       layout(row_major) layout(column_major) mat4 a_cm2;\n"
  67         "};\n"
  68         "\n"
  69         "uniform c {\n"
  70         "       layout(column_major) layout(row_major) mat4 a_rm3;\n"
  71         "       layout(row_major) layout(column_major) mat4 a_cm3;\n"
  72         "};\n"
  73         "\n"
  74         "void main() {\n"
  75         "       gl_FragColor = (\n"
  76         "               a_cm1[0] + \n"
  77         "               a_cm2[0] + \n"
  78         "               a_cm3[0] + \n"
  79         "               a_rm1[0] + \n"
  80         "               a_rm2[0] + \n"
  81         "               a_rm3[0]);\n"
  82         "}\n";
  83
  84 static struct {
  85         const char *name;
  86         bool row_major;
  87 } uniforms[] = {
  88         { "a_cm1", false },
  89         { "a_cm2", false },
  90         { "a_rm1", true },
  91         { "a_rm2", true },
  92 };
  93
  94 void
  95 piglit_init(int argc, char **argv)
  96 {
  97         bool pass = true;
  98         unsigned int i;
  99         GLuint prog;
 100
 101         piglit_require_extension("GL_ARB_shading_language_420pack");
 102         piglit_require_extension("GL_ARB_uniform_buffer_object");
 103         prog = piglit_build_simple_program(NULL, source);
 104
 105         for (i = 0; i < ARRAY_SIZE(uniforms); i++) {
 106                 GLuint index;
 107                 GLint row_major;
 108
 109                 glGetUniformIndices(prog, 1, &uniforms[i].name, &index);
 110                 if (index == GL_INVALID_INDEX) {
 111                         printf("Failed to get index for %s\n",
 112                                uniforms[i].name);
 113                         pass = false;
 114                         continue;
 115                 }
 116
 117                 glGetActiveUniformsiv(prog, 1, &index, GL_UNIFORM_IS_ROW_MAJOR,
 118                                       &row_major);
 119
 120                 if (row_major != uniforms[i].row_major) {
 121                         fprintf(stderr, "Uniform %s should %sbe row major\n",
 122                                 uniforms[i].name,
 123                                 uniforms[i].row_major ? "" : "not ");
 124                         pass = false;
 125                 }
 126         }
 127
 128         piglit_report_result(pass ? PIGLIT_PASS : PIGLIT_FAIL);
 129 }
 130
 131 enum piglit_result piglit_display(void)
 132 {
 133         /* UNREACHED */
 134         return PIGLIT_FAIL;
 135 }