tests/spec/arb_shader_storage_buffer_object/getintegeri_v.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 getintegeri_v.c
  25  *
  26  * From the GL_ARB_shader_storage_buffer_object spec:
  27  *
  28  *   "To query the starting offset or size of the range of each buffer object
  29  *    binding used for shader storage buffers, call GetInteger64i_v with <param>
  30  *    set to SHADER_STORAGE_BUFFER_START or SHADER_STORAGE_BUFFER_SIZE
  31  *    respectively.  <index> must be in the range zero to the value of
  32  *    MAX_SHADER_STORAGE_BUFFER_BINDINGS-1.  If the parameter (starting offset
  33  *    or size) was not specified when the buffer object was bound (e.g.  if
  34  *    bound with BindBufferBase), or if no buffer object is bound to index, zero
  35  *    is returned."
  36  *
  37  * Based on ARB_uniform_buffer_object's getintegeri_v.c
  38  */
  39
  40 #include "piglit-util-gl.h"
  41
  42 PIGLIT_GL_TEST_CONFIG_BEGIN
  43
  44         config.supports_gl_compat_version = 32;
  45         config.supports_gl_core_version = 32;
  46         config.window_visual = PIGLIT_GL_VISUAL_RGBA | PIGLIT_GL_VISUAL_DOUBLE;
  47         config.khr_no_error_support = PIGLIT_NO_ERRORS;
  48
  49 PIGLIT_GL_TEST_CONFIG_END
  50
  51 static bool pass = true;
  52
  53 static void
  54 test_index(int line, GLenum e, int index, int expected)
  55 {
  56         GLint val;
  57
  58         glGetIntegeri_v(e, index, &val);
  59         if (val != expected) {
  60                 printf("%s:%d: %s[%d] was %d, expected %d\n",
  61                        __FILE__, line, piglit_get_gl_enum_name(e), index,
  62                        val, expected);
  63                 pass = false;
  64         }
  65 }
  66
  67 void
  68 test_range(int line, int index, int bo, int offset, int size)
  69 {
  70         test_index(line, GL_SHADER_STORAGE_BUFFER_BINDING, index, bo);
  71         test_index(line, GL_SHADER_STORAGE_BUFFER_START, index, offset);
  72         test_index(line, GL_SHADER_STORAGE_BUFFER_SIZE, index, size);
  73 }
  74
  75 void
  76 piglit_init(int argc, char **argv)
  77 {
  78         GLuint bo[2];
  79         int size = 1024;
  80         GLint max_bindings;
  81         GLint junk;
  82         GLint alignment;
  83
  84         piglit_require_extension("GL_ARB_shader_storage_buffer_object");
  85
  86         /* If no buffer object is bound to index, zero is returned. */
  87         test_range(__LINE__, 1, 0, 0, 0);
  88
  89         glGetIntegerv(GL_SHADER_STORAGE_BUFFER_OFFSET_ALIGNMENT, &alignment);
  90
  91         glGenBuffers(2, bo);
  92         glBindBuffer(GL_SHADER_STORAGE_BUFFER, bo[0]);
  93         glBufferData(GL_SHADER_STORAGE_BUFFER, size, NULL, GL_STATIC_READ);
  94         glBindBuffer(GL_SHADER_STORAGE_BUFFER, bo[1]);
  95         glBufferData(GL_SHADER_STORAGE_BUFFER, size, NULL, GL_STATIC_READ);
  96
  97         glBindBufferRange(GL_SHADER_STORAGE_BUFFER, 0, bo[0], 0, 1);
  98         glBindBufferRange(GL_SHADER_STORAGE_BUFFER, 1, bo[1], 2 * alignment, 3);
  99         test_range(__LINE__, 0, bo[0], 0, 1);
 100         test_range(__LINE__, 1, bo[1], 2 * alignment, 3);
 101
 102         glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 1, bo[1]);
 103         test_range(__LINE__, 1, bo[1], 0, 0);
 104
 105         glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 0, 0);
 106         test_range(__LINE__, 0, 0, 0, 0);
 107
 108         /* Test the error condition. */
 109         if (!piglit_khr_no_error) {
 110                 glGetIntegerv(GL_MAX_SHADER_STORAGE_BUFFER_BINDINGS,
 111                               &max_bindings);
 112                 glGetIntegeri_v(GL_SHADER_STORAGE_BUFFER_BINDING,
 113                                 max_bindings, &junk);
 114                 if (!piglit_check_gl_error(GL_INVALID_VALUE))
 115                         pass = false;
 116         }
 117
 118         piglit_report_result(pass ? PIGLIT_PASS : PIGLIT_FAIL);
 119 }
 120
 121 enum piglit_result piglit_display(void)
 122 {
 123         /* UNREACHED */
 124         return PIGLIT_FAIL;
 125 }
 126