[Piglit] [PATCH 3/8] GL_ARB_copy_buffer: Add a test for syncing with glBufferData();

[Ian Romanick]

On 10/08/2013 02:09 PM, Eric Anholt wrote:
> Like the subdata test, make sure that we get back the right results
> when putting new data in our source or dest after a copy.
> ---
>  tests/all.tests                              |   1 +
>  tests/spec/arb_copy_buffer/CMakeLists.gl.txt |   1 +
>  tests/spec/arb_copy_buffer/data-sync.c       | 109 +++++++++++++++++++++++++++
>  3 files changed, 111 insertions(+)
>  create mode 100644 tests/spec/arb_copy_buffer/data-sync.c
> 
> diff --git a/tests/all.tests b/tests/all.tests
> index 5c7bd3f..dfb3b79 100644
> --- a/tests/all.tests
> +++ b/tests/all.tests
> @@ -2485,6 +2485,7 @@ arb_copy_buffer = Group()
>  spec['ARB_copy_buffer'] = arb_copy_buffer
>  add_plain_test(arb_copy_buffer, 'copy_buffer_coherency')
>  add_plain_test(arb_copy_buffer, 'copybuffersubdata')
> +arb_copy_buffer['data-sync'] = concurrent_test('arb_copy_buffer-data-sync')
>  arb_copy_buffer['dlist'] = concurrent_test('arb_copy_buffer-dlist')
>  arb_copy_buffer['get'] = concurrent_test('arb_copy_buffer-get')
>  arb_copy_buffer['negative-bound-zero'] = concurrent_test('arb_copy_buffer-negative-bound-zero')
> diff --git a/tests/spec/arb_copy_buffer/CMakeLists.gl.txt b/tests/spec/arb_copy_buffer/CMakeLists.gl.txt
> index 5332f6d..6e5695e 100644
> --- a/tests/spec/arb_copy_buffer/CMakeLists.gl.txt
> +++ b/tests/spec/arb_copy_buffer/CMakeLists.gl.txt
> @@ -11,6 +11,7 @@ link_libraries (
>  
>  piglit_add_executable (copy_buffer_coherency copy_buffer_coherency.c)
>  piglit_add_executable (copybuffersubdata copybuffersubdata.c)
> +piglit_add_executable (arb_copy_buffer-data-sync data-sync.c)
>  piglit_add_executable (arb_copy_buffer-dlist dlist.c)
>  piglit_add_executable (arb_copy_buffer-get get.c)
>  piglit_add_executable (arb_copy_buffer-overlap overlap.c)
> diff --git a/tests/spec/arb_copy_buffer/data-sync.c b/tests/spec/arb_copy_buffer/data-sync.c
> new file mode 100644
> index 0000000..0618722
> --- /dev/null
> +++ b/tests/spec/arb_copy_buffer/data-sync.c
> @@ -0,0 +1,109 @@
> +/*
> + * Copyright © 2013 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 data-sync.c
> + *
> + * Tests that glBufferData() synchronizes correctly with
> + * glCopyBufferSubData().
> + *
> + * We make sure that a glBufferData() over the read buffer after the
> + * copy has no effect, while a glBufferData() over the write buffer
> + * after the copy does have an effect.
> + */
> +
> +#include "piglit-util-gl-common.h"
> +
> +PIGLIT_GL_TEST_CONFIG_BEGIN
> +
> +	config.supports_gl_compat_version = 10;

Same comment as previous test.

> +	config.supports_gl_core_version = 31;
> +
> +	config.window_visual = PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_DOUBLE;
> +
> +PIGLIT_GL_TEST_CONFIG_END
> +
> +void
> +piglit_init(int argc, char *argv[])
> +{
> +	bool pass = true;
> +	uint32_t dummy_data_1[4], dummy_data_2[4];
> +	uint32_t good_data[4] = {0, 1, 2, 3};
> +	uint32_t result_data[4];
> +	bool subtest_pass;
> +	size_t size = sizeof(good_data);
> +	GLuint buffer_handles[2];
> +
> +	memset(dummy_data_1, 0xaa, size);
> +	memset(dummy_data_2, 0xbb, size);
> +
> +	piglit_require_gl_version(15);
> +
> +	piglit_require_extension("GL_ARB_copy_buffer");
> +
> +	glGenBuffersARB(2, buffer_handles);
> +	glBindBufferARB(GL_COPY_READ_BUFFER, buffer_handles[0]);
> +	glBindBufferARB(GL_COPY_WRITE_BUFFER, buffer_handles[1]);

Same comment as previous test.

> +
> +	glBufferData(GL_COPY_READ_BUFFER, size, good_data, GL_STREAM_COPY);
> +	glBufferData(GL_COPY_WRITE_BUFFER, size, dummy_data_1, GL_STREAM_COPY);
> +	glCopyBufferSubData(GL_COPY_READ_BUFFER, GL_COPY_WRITE_BUFFER,
> +			    0, 0, size);
> +	glBufferData(GL_COPY_READ_BUFFER, size, dummy_data_2, GL_STREAM_COPY);
> +	memset(result_data, 0xd0, size);
> +	glGetBufferSubData(GL_COPY_WRITE_BUFFER, 0, size, result_data);
> +	subtest_pass = memcmp(good_data, result_data, size) == 0;
> +	if (!subtest_pass) {
> +		fprintf(stderr, "found 0x%08x 0x%08x 0x%08x 0x%08x\n",
> +			result_data[0], result_data[1],
> +			result_data[2], result_data[3]);
> +		pass = false;
> +	}
> +	piglit_report_subtest_result(subtest_pass ? PIGLIT_PASS : PIGLIT_FAIL,
> +				     "overwrite source data");
> +
> +	glBufferData(GL_COPY_READ_BUFFER, size, dummy_data_2, GL_STREAM_COPY);
> +	glBufferData(GL_COPY_WRITE_BUFFER, size, dummy_data_1, GL_STREAM_COPY);
> +	glCopyBufferSubData(GL_COPY_READ_BUFFER, GL_COPY_WRITE_BUFFER,
> +			    0, 0, size);
> +	glBufferData(GL_COPY_WRITE_BUFFER, size, dummy_data_2, GL_STREAM_COPY);

This copies dummy_data_2 to COPY_WRITE_BUFFER, the writes dummy_data-2
to COPY_WRITE_BUFFER... then compares with good_data.  Should one of
these be good_data?

> +	memset(result_data, 0xd0, size);
> +	glGetBufferSubData(GL_COPY_WRITE_BUFFER, 0, size, result_data);
> +	subtest_pass = memcmp(good_data, result_data, size) == 0;
> +	if (!subtest_pass) {
> +		fprintf(stderr, "found 0x%08x 0x%08x 0x%08x 0x%08x\n",
> +			result_data[0], result_data[1],
> +			result_data[2], result_data[3]);
> +		pass = false;
> +	}
> +	piglit_report_subtest_result(subtest_pass ? PIGLIT_PASS : PIGLIT_FAIL,
> +				     "overwrite destination data");
> +
> +	piglit_report_result(pass ? PIGLIT_PASS : PIGLIT_FAIL);
> +}
> +
> +enum piglit_result
> +piglit_display(void)
> +{
> +	/* UNREACHED */
> +	return PIGLIT_FAIL;
> +}
>