tests/spec/arb_clear_buffer_object/unaligned.c

   1 /*
   2  * Copyright © 2014 Intel Corporation
   3  * Copyright © 2015 Advanced Micro Devices, Inc.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   9  * and/or sell copies of the Software, and to permit persons to whom the
  10  * Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice (including the next
  13  * paragraph) shall be included in all copies or substantial portions of the
  14  * Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  21  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  22  * IN THE SOFTWARE.
  23  */
  24
  25 /**
  26  * \file unaligned.c
  27  *
  28  * Test R8 copying with non-dword alignment.
  29  */
  30
  31 #include "piglit-util-gl.h"
  32 #include "common.h"
  33
  34 PIGLIT_GL_TEST_CONFIG_BEGIN
  35
  36         config.supports_gl_compat_version = 15;
  37         config.supports_gl_core_version = 31;
  38         config.khr_no_error_support = PIGLIT_NO_ERRORS;
  39
  40 PIGLIT_GL_TEST_CONFIG_END
  41
  42 #define SIZE (1 << 20)
  43
  44 static bool debug;
  45
  46 static void
  47 clear_buffer(int i, unsigned offset, unsigned size, unsigned char value, char *cpu)
  48 {
  49         glClearBufferSubData(GL_ARRAY_BUFFER, GL_R8, offset, size,
  50                              GL_RED, GL_UNSIGNED_BYTE, &value);
  51         memset(cpu+offset, value, size);
  52
  53         if (debug && !check_array_buffer_data(SIZE, cpu)) {
  54                 printf("Clear %i failed: offset=%i (%%4 = %i), size=%i (%%4 = %i)\n",
  55                        i, offset, offset % 4, size, size % 4);
  56                 piglit_report_result(PIGLIT_FAIL);
  57         }
  58 }
  59
  60 void
  61 piglit_init(int argc, char **argv)
  62 {
  63         bool pass = true;
  64         GLuint buffer;
  65         int i;
  66         unsigned offset, size;
  67         char *cpu = malloc(SIZE);
  68
  69         if (!cpu)
  70                 piglit_report_result(PIGLIT_FAIL);
  71
  72         for (i = 1; i < argc; i++)
  73                 if (!strcmp(argv[i], "-debug"))
  74                         debug = true;
  75
  76         piglit_require_extension("GL_ARB_clear_buffer_object");
  77         glGenBuffers(1, &buffer);
  78         glBindBuffer(GL_ARRAY_BUFFER, buffer);
  79         glBufferData(GL_ARRAY_BUFFER, SIZE, NULL, GL_STREAM_READ);
  80
  81         clear_buffer(0, 0, SIZE, 0, cpu);
  82
  83         srand(6487216);
  84         for (i = 1; i <= 200; i++) {
  85                 offset = rand() % SIZE;
  86                 size = 1 + (rand() % (SIZE - offset));
  87
  88                 clear_buffer(i, offset, size, rand(), cpu);
  89         }
  90
  91         /* and some small unaligned copies within one dword */
  92         for (; i < 230; i++) {
  93                 offset = (rand() % (SIZE/4)) * 4 + 1 + (rand() % 2);
  94                 size = 1;
  95
  96                 clear_buffer(i, offset, size, rand(), cpu);
  97         }
  98
  99         pass = piglit_check_gl_error(GL_NO_ERROR) &&
 100                check_array_buffer_data(SIZE, cpu);
 101         glDeleteBuffers(1, &buffer);
 102         free(cpu);
 103         piglit_report_result(pass ? PIGLIT_PASS : PIGLIT_FAIL);
 104 }
 105
 106
 107 enum piglit_result
 108 piglit_display(void)
 109 {
 110         return PIGLIT_PASS;
 111 }