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/*
* Copyright © 2012 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/
/** @file targets.c
*
* Tests the following piece of the GL_ARB_copy_buffer spec:
*
* "All or part of one buffer object's data store may be copied to
* the data store of another buffer object by calling
*
* void CopyBufferSubData(enum readtarget, enum writetarget,
* intptr readoffset, intptr writeoffset,
* sizeiptr size);
*
* with readtarget and writetarget each set to one of the targets
* ARRAY_BUFFER, COPY_READ_BUFFER, COPY_WRITE_BUFFER,
* ELEMENT_ARRAY_BUFFER, PIXEL_PACK_BUFFER, PIXEL_UNPACK_BUFFER,
* TEXTURE_BUFFER, TRANSFORM_FEEDBACK_BUFFER, or
* UNIFORM_BUFFER. While any of these targets may be used, the
* COPY_READ_BUFFER and COPY_WRITE_BUFFER targets are provided
* specifically for copies, so that they can be done without
* affecting other buffer binding targets that may be in use."
*
* Specifically, it walks over the available targets and makes sure
* that copies work for them.
*/
#include "piglit-util-gl-common.h"
PIGLIT_GL_TEST_MAIN(
100 /*window_width*/,
100 /*window_height*/,
PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_DOUBLE)
enum piglit_result
piglit_display(void)
{
/* uncreached */
return PIGLIT_FAIL;
}
static bool
supported(GLenum target)
{
switch (target) {
case GL_ARRAY_BUFFER:
case GL_ELEMENT_ARRAY_BUFFER:
return piglit_is_extension_supported("GL_ARB_vertex_buffer_object");
case GL_COPY_READ_BUFFER:
case GL_COPY_WRITE_BUFFER:
return true;
case GL_PIXEL_PACK_BUFFER:
case GL_PIXEL_UNPACK_BUFFER:
return (piglit_is_extension_supported("GL_EXT_pixel_buffer_object") ||
piglit_is_extension_supported("GL_ARB_pixel_buffer_object"));
case GL_TEXTURE_BUFFER:
return (piglit_is_extension_supported("GL_EXT_texture_buffer_object") ||
piglit_is_extension_supported("GL_ARB_texture_buffer_object"));
case GL_TRANSFORM_FEEDBACK_BUFFER:
return piglit_is_extension_supported("GL_EXT_transform_feedback");
case GL_UNIFORM_BUFFER:
return (piglit_is_extension_supported("GL_EXT_bindable_uniform") ||
piglit_is_extension_supported("GL_ARB_uniform_buffer_object"));
}
abort();
}
static void
test_copy(GLenum from, GLenum to)
{
GLuint bufs[2];
uint8_t data[8];
uint8_t bad_data[8];
void *ptr;
int i;
glGenBuffers(2, bufs);
for (i = 0; i < ARRAY_SIZE(data); i++)
data[i] = i;
memset(bad_data, 0xd0, sizeof(bad_data));
glBindBuffer(from, bufs[0]);
glBufferData(from, sizeof(data), data, GL_DYNAMIC_DRAW);
glBindBuffer(to, bufs[1]);
glBufferData(to, sizeof(bad_data), bad_data, GL_DYNAMIC_DRAW);
glCopyBufferSubData(from, to, 0, 0, sizeof(data));
ptr = glMapBuffer(to, GL_READ_ONLY);
if (memcmp(ptr, data, sizeof(data))) {
fprintf(stderr, "data not copied\n");
piglit_report_result(PIGLIT_FAIL);
}
glUnmapBuffer(to);
glDeleteBuffers(2, bufs);
}
void
piglit_init(int argc, char **argv)
{
int i, j;
GLenum targets[] = {
GL_ARRAY_BUFFER,
GL_COPY_READ_BUFFER,
GL_COPY_WRITE_BUFFER,
GL_ELEMENT_ARRAY_BUFFER,
GL_PIXEL_PACK_BUFFER,
GL_PIXEL_UNPACK_BUFFER,
GL_TEXTURE_BUFFER,
GL_TRANSFORM_FEEDBACK_BUFFER,
GL_UNIFORM_BUFFER,
};
piglit_require_extension("GL_ARB_copy_buffer");
for (i = 0; i < ARRAY_SIZE(targets); i++) {
GLenum from = targets[i];
if (!supported(from))
continue;
for (j = 0; j < ARRAY_SIZE(targets); j++) {
GLenum to = targets[j];
if (from == to)
continue;
if (!supported(to))
continue;
test_copy(from, to);
}
}
piglit_report_result(PIGLIT_PASS);
}
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