tests/spec/arb_shader_storage_buffer_object/ssbo-binding.c

   1 /*
   2  * Copyright © 2015 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 shaderstorageblockbinding.c
  25  *
  26  * From GL_ARB_shader_storage_buffer_object:
  27  * "After a program is linked, the command
  28  *
  29  *     void ShaderStorageBlockBinding(uint program, uint storageBlockIndex,
  30  *                                    uint storageBlockBinding);
  31  *
  32  *   changes the active shader storage block with an assigned index of
  33  *   <storageBlockIndex> in program object <program>.  The error INVALID_VALUE
  34  *   is generated if <storageBlockIndex> is not an active shader storage block
  35  *   index in <program>, or if <storageBlockBinding> is greater than or equal
  36  *   to the value of MAX_SHADER_STORAGE_BUFFER_BINDINGS. If successful,
  37  *   ShaderStorageBlockBinding specifies that <program> will use the data
  38  *   store of the buffer object bound to the binding point
  39  *   <storageBlockBinding> to read and write the values of the buffer
  40  *   variables in the shader storage block identified by <storageBlockIndex>."
  41  */
  42
  43 #include "piglit-util-gl.h"
  44
  45 PIGLIT_GL_TEST_CONFIG_BEGIN
  46
  47         config.supports_gl_compat_version = 32;
  48         config.supports_gl_core_version = 32;
  49         config.window_visual = PIGLIT_GL_VISUAL_DOUBLE | PIGLIT_GL_VISUAL_RGBA;
  50         config.khr_no_error_support = PIGLIT_NO_ERRORS;
  51
  52 PIGLIT_GL_TEST_CONFIG_END
  53
  54 static GLuint prog;
  55
  56 static const char frag_shader_text[] =
  57         "#version 130\n"
  58         "#extension GL_ARB_shader_storage_buffer_object : require\n"
  59         "\n"
  60         "buffer ssbo_a { vec4 a; };\n"
  61         "\n"
  62         "void main()\n"
  63         "{\n"
  64         "       gl_FragColor = a;\n"
  65         "}\n";
  66
  67 void
  68 piglit_init(int argc, char **argv)
  69 {
  70         bool pass = true;
  71         int max_binding;
  72         int index;
  73
  74         piglit_require_extension("GL_ARB_shader_storage_buffer_object");
  75         piglit_require_extension("GL_ARB_program_interface_query");
  76
  77         prog = piglit_build_simple_program(NULL, frag_shader_text);
  78
  79         glGetIntegerv(GL_MAX_SHADER_STORAGE_BUFFER_BINDINGS, &max_binding);
  80         printf("MAX_SHADER_STORAGE_BUFFER_BINDINGS: %d\n", max_binding);
  81
  82         index = glGetProgramResourceIndex(prog,
  83                                           GL_SHADER_STORAGE_BLOCK, "ssbo_a");
  84         if (!piglit_check_gl_error(0)) {
  85                 pass = false;
  86         }
  87         printf("Shader storage block \"ssbo_a\" index: %d\n", index);
  88
  89         printf("Test binding value: %d\n", 0);
  90         glShaderStorageBlockBinding(prog, index, 0);
  91         if (!piglit_check_gl_error(0)) {
  92                 pass = false;
  93         }
  94         printf("Test binding value: %d\n", max_binding - 1);
  95         glShaderStorageBlockBinding(prog, index, max_binding - 1);
  96         if (!piglit_check_gl_error(0)) {
  97                 pass = false;
  98         }
  99
 100         if (!piglit_khr_no_error) {
 101                 /* The error INVALID_VALUE is generated if <storageBlockIndex>
 102                  * is not an active shader storage block index in <program>,
 103                  * or if <storageBlockBinding> is greater than or equal to the
 104                  * value of MAX_SHADER_STORAGE_BUFFER_BINDINGS.
 105                  */
 106                 printf("Test binding value: %d\n", max_binding);
 107                 glShaderStorageBlockBinding(prog, index, max_binding);
 108                 if (!piglit_check_gl_error(GL_INVALID_VALUE)) {
 109                         pass = false;
 110                 }
 111
 112                 /* The error INVALID_VALUE is generated if <storageBlockIndex>
 113                  * is not an active shader storage block index in <program>
 114                  */
 115                 printf("Test invalid index: %d\n", index + 1);
 116                 glShaderStorageBlockBinding(prog, index + 1, 0);
 117                 if (!piglit_check_gl_error(GL_INVALID_VALUE)) {
 118                         pass = false;
 119                 }
 120         }
 121
 122         piglit_report_result(pass ? PIGLIT_PASS : PIGLIT_FAIL);
 123 }
 124
 125 enum piglit_result piglit_display(void)
 126 {
 127         /* UNREACHED */
 128         return PIGLIT_FAIL;
 129 }