tests/spec/arb_copy_buffer/targets.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 DEALINGS
  21  * IN THE SOFTWARE.
  22  */
  23
  24 /** @file targets.c
  25  *
  26  * Tests the following piece of the GL_ARB_copy_buffer spec:
  27  *
  28  *     "All or part of one buffer object's data store may be copied to
  29  *      the data store of another buffer object by calling
  30  *
  31  *      void CopyBufferSubData(enum readtarget, enum writetarget,
  32  *                             intptr readoffset, intptr writeoffset,
  33  *                             sizeiptr size);
  34  *
  35  *      with readtarget and writetarget each set to one of the targets
  36  *      ARRAY_BUFFER, COPY_READ_BUFFER, COPY_WRITE_BUFFER,
  37  *      ELEMENT_ARRAY_BUFFER, PIXEL_PACK_BUFFER, PIXEL_UNPACK_BUFFER,
  38  *      TEXTURE_BUFFER, TRANSFORM_FEEDBACK_BUFFER, or
  39  *      UNIFORM_BUFFER. While any of these targets may be used, the
  40  *      COPY_READ_BUFFER and COPY_WRITE_BUFFER targets are provided
  41  *      specifically for copies, so that they can be done without
  42  *      affecting other buffer binding targets that may be in use."
  43  *
  44  * Specifically, it walks over the available targets and makes sure
  45  * that copies work for them.
  46  */
  47
  48 #include "piglit-util-gl.h"
  49
  50 PIGLIT_GL_TEST_CONFIG_BEGIN
  51
  52         config.supports_gl_compat_version = 10;
  53
  54         config.window_visual = PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_DOUBLE;
  55         config.khr_no_error_support = PIGLIT_NO_ERRORS;
  56
  57 PIGLIT_GL_TEST_CONFIG_END
  58
  59 enum piglit_result
  60 piglit_display(void)
  61 {
  62         /* uncreached */
  63         return PIGLIT_FAIL;
  64 }
  65
  66 static bool
  67 supported(GLenum target)
  68 {
  69         switch (target) {
  70         case GL_ARRAY_BUFFER:
  71         case GL_ELEMENT_ARRAY_BUFFER:
  72                 return piglit_is_extension_supported("GL_ARB_vertex_buffer_object");
  73
  74         case GL_COPY_READ_BUFFER:
  75         case GL_COPY_WRITE_BUFFER:
  76                 return true;
  77
  78         case GL_PIXEL_PACK_BUFFER:
  79         case GL_PIXEL_UNPACK_BUFFER:
  80                 return (piglit_is_extension_supported("GL_EXT_pixel_buffer_object") ||
  81                         piglit_is_extension_supported("GL_ARB_pixel_buffer_object"));
  82
  83         case GL_TEXTURE_BUFFER:
  84                 return (piglit_is_extension_supported("GL_EXT_texture_buffer_object") ||
  85                         piglit_is_extension_supported("GL_ARB_texture_buffer_object"));
  86
  87         case GL_TRANSFORM_FEEDBACK_BUFFER:
  88                 return piglit_is_extension_supported("GL_EXT_transform_feedback");
  89
  90         case GL_UNIFORM_BUFFER:
  91                 return (piglit_is_extension_supported("GL_EXT_bindable_uniform") ||
  92                         piglit_is_extension_supported("GL_ARB_uniform_buffer_object"));
  93         }
  94
  95         abort();
  96 }
  97
  98 static void
  99 test_copy(GLenum from, GLenum to)
 100 {
 101         GLuint bufs[2];
 102         uint8_t data[8];
 103         uint8_t bad_data[8];
 104         void *ptr;
 105         int i;
 106
 107         glGenBuffers(2, bufs);
 108
 109         for (i = 0; i < ARRAY_SIZE(data); i++)
 110                 data[i] = i;
 111
 112         memset(bad_data, 0xd0, sizeof(bad_data));
 113
 114         glBindBuffer(from, bufs[0]);
 115         glBufferData(from, sizeof(data), data, GL_DYNAMIC_DRAW);
 116         glBindBuffer(to, bufs[1]);
 117         glBufferData(to, sizeof(bad_data), bad_data, GL_DYNAMIC_DRAW);
 118
 119         glCopyBufferSubData(from, to, 0, 0, sizeof(data));
 120         ptr = glMapBuffer(to, GL_READ_ONLY);
 121         if (ptr == NULL || memcmp(ptr, data, sizeof(data))) {
 122                 fprintf(stderr, "data not copied\n");
 123                 piglit_report_result(PIGLIT_FAIL);
 124         }
 125         glUnmapBuffer(to);
 126
 127         glDeleteBuffers(2, bufs);
 128 }
 129
 130
 131 void
 132 piglit_init(int argc, char **argv)
 133 {
 134         int i, j;
 135         GLenum targets[] = {
 136                 GL_ARRAY_BUFFER,
 137                 GL_COPY_READ_BUFFER,
 138                 GL_COPY_WRITE_BUFFER,
 139                 GL_ELEMENT_ARRAY_BUFFER,
 140                 GL_PIXEL_PACK_BUFFER,
 141                 GL_PIXEL_UNPACK_BUFFER,
 142                 GL_TEXTURE_BUFFER,
 143                 GL_TRANSFORM_FEEDBACK_BUFFER,
 144                 GL_UNIFORM_BUFFER,
 145         };
 146
 147         piglit_require_extension("GL_ARB_copy_buffer");
 148
 149         for (i = 0; i < ARRAY_SIZE(targets); i++) {
 150                 GLenum from = targets[i];
 151
 152                 if (!supported(from))
 153                         continue;
 154
 155                 for (j = 0; j < ARRAY_SIZE(targets); j++) {
 156                         GLenum to = targets[j];
 157
 158                         if (from == to)
 159                                 continue;
 160                         if (!supported(to))
 161                                 continue;
 162
 163                         test_copy(from, to);
 164                 }
 165         }
 166
 167         piglit_report_result(PIGLIT_PASS);
 168 }