tests/spec/arb_uniform_buffer_object/negative-bindbufferrange-range.c

   1 /*
   2  * Copyright © 2012 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 negative-bindbufferrange-range.c
  25  *
  26  * From the GL_ARB_uniform_buffer_object spec:
  27  *
  28  *     "For BindBufferRange, <offset> specifies a starting offset into
  29  *      the buffer object <buffer>, and <size> specifies the amount of
  30  *      data that can be read from the buffer object while used as the
  31  *      storage for a uniform block. Both <offset> and <size> are in
  32  *      basic machine units. The error INVALID_VALUE is generated if
  33  *      the value of <size> is less than or equal to zero, if <offset>
  34  *      + <size> is greater than the value of BUFFER_SIZE, or if
  35  *      <offset> is not a multiple of the implementation-dependent
  36  *      required alignment
  37  *      (UNIFORM_BUFFER_OFFSET_ALIGNMENT). BindBufferBase is
  38  *      equivalent to calling BindBufferRange with <offset> zero and
  39  *      <size> equal to the size of <buffer>."
  40  */
  41
  42 #include "piglit-util-gl.h"
  43
  44 PIGLIT_GL_TEST_CONFIG_BEGIN
  45
  46         config.supports_gl_compat_version = 10;
  47         config.window_visual = PIGLIT_GL_VISUAL_RGBA | PIGLIT_GL_VISUAL_DOUBLE;
  48         config.khr_no_error_support = PIGLIT_HAS_ERRORS;
  49
  50 PIGLIT_GL_TEST_CONFIG_END
  51
  52 void
  53 piglit_init(int argc, char **argv)
  54 {
  55         bool pass = true;
  56         GLint alignment;
  57         GLuint bo;
  58         int size = 1024;
  59         int index = 0;
  60         int i;
  61
  62         piglit_require_extension("GL_ARB_uniform_buffer_object");
  63
  64         glGenBuffers(1, &bo);
  65         glBindBuffer(GL_UNIFORM_BUFFER, bo);
  66         glBufferData(GL_UNIFORM_BUFFER, size, NULL, GL_STATIC_READ);
  67
  68         glBindBufferRange(GL_UNIFORM_BUFFER, index, bo, 0, 0);
  69         if (!piglit_check_gl_error(GL_INVALID_VALUE))
  70                 pass = false;
  71
  72         glBindBufferRange(GL_UNIFORM_BUFFER, index, bo, 0, -1);
  73         if (!piglit_check_gl_error(GL_INVALID_VALUE))
  74                 pass = false;
  75
  76         /* Note: we don't check the following condition (which is
  77          * specified in OpenGL specs from 3.0 through 4.1):
  78          *
  79          *     "The error INVALID_VALUE is generated if size is less
  80          *     than or equal to zero or if offset + size is greater
  81          *     than the value of BUFFER_SIZE."
  82          *
  83          * This text was dropped from OpenGL 4.2, and it does not
  84          * appear in the GLES 3.0 spec.  Since this is a deliberate
  85          * relaxation of error conditions in order to allow clients to
  86          * work, it seems sensible to allow implementations to apply
  87          * this change even if the GL version is less than 4.2.
  88          */
  89
  90         glGetIntegerv(GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT, &alignment);
  91         for (i = 1; i < alignment; i++) {
  92                 glBindBufferRange(GL_UNIFORM_BUFFER, index, bo, i, 4);
  93                 if (!piglit_check_gl_error(GL_INVALID_VALUE))
  94                         pass = false;
  95         }
  96
  97         piglit_report_result(pass ? PIGLIT_PASS : PIGLIT_FAIL);
  98 }
  99
 100 enum piglit_result piglit_display(void)
 101 {
 102         /* UNREACHED */
 103         return PIGLIT_FAIL;
 104 }