[Piglit] [PATCH] Add a test for ARB_map_buffer_alignment

[Ian Romanick]

On 10/28/2012 09:55 AM, Marek Olšák wrote:

There's one other case that's important to test:  GL_WRITE_ONLY mapping 
of a buffer in-use by the GPU.  On at least some implementations, this 
would cause a temporary buffer to be allocated using malloc and returned 
to the application.  See also my reply to your Mesa patch.

> ---
>   tests/all.tests                                    |    4 +
>   tests/spec/CMakeLists.txt                          |    1 +
>   .../arb_map_buffer_alignment/CMakeLists.gl.txt     |   14 +++
>   tests/spec/arb_map_buffer_alignment/CMakeLists.txt |    1 +
>   tests/spec/arb_map_buffer_alignment/sanity_test.c  |   91 ++++++++++++++++++++
>   5 files changed, 111 insertions(+)
>   create mode 100644 tests/spec/arb_map_buffer_alignment/CMakeLists.gl.txt
>   create mode 100644 tests/spec/arb_map_buffer_alignment/CMakeLists.txt
>   create mode 100644 tests/spec/arb_map_buffer_alignment/sanity_test.c
>
> diff --git a/tests/all.tests b/tests/all.tests
> index d606a4d..a6e258f 100644
> --- a/tests/all.tests
> +++ b/tests/all.tests
> @@ -2091,6 +2091,10 @@ add_plain_test(sgis_generate_mipmap, 'gen-nonzero-unit')
>   add_plain_test(sgis_generate_mipmap, 'gen-teximage')
>   add_plain_test(sgis_generate_mipmap, 'gen-texsubimage')
>
> +arb_map_buffer_alignment = Group()
> +spec['ARB_map_buffer_alignment'] = arb_map_buffer_alignment
> +add_plain_test(arb_map_buffer_alignment, 'arb_map_buffer_alignment-sanity_test')
> +
>   # group glslparsertest ------------------------------------------------------
>   glslparsertest = Group()
>   # Add all shader source files in the directories below.
> diff --git a/tests/spec/CMakeLists.txt b/tests/spec/CMakeLists.txt
> index d8796b0..03757ef 100644
> --- a/tests/spec/CMakeLists.txt
> +++ b/tests/spec/CMakeLists.txt
> @@ -5,6 +5,7 @@ add_subdirectory (arb_es2_compatibility)
>   add_subdirectory (arb_framebuffer_object)
>   add_subdirectory (arb_framebuffer_srgb)
>   add_subdirectory (arb_instanced_arrays)
> +add_subdirectory (arb_map_buffer_alignment)
>   add_subdirectory (arb_map_buffer_range)
>   add_subdirectory (arb_multisample)
>   add_subdirectory (arb_robustness)
> diff --git a/tests/spec/arb_map_buffer_alignment/CMakeLists.gl.txt b/tests/spec/arb_map_buffer_alignment/CMakeLists.gl.txt
> new file mode 100644
> index 0000000..12c73ae
> --- /dev/null
> +++ b/tests/spec/arb_map_buffer_alignment/CMakeLists.gl.txt
> @@ -0,0 +1,14 @@
> +include_directories(
> +	${GLEXT_INCLUDE_DIR}
> +	${OPENGL_INCLUDE_PATH}
> +)
> +
> +link_libraries (
> +	piglitutil_${piglit_target_api}
> +	${OPENGL_gl_LIBRARY}
> +	${OPENGL_glu_LIBRARY}
> +)
> +
> +piglit_add_executable (arb_map_buffer_alignment-sanity_test sanity_test.c)
> +
> +# vim: ft=cmake:
> diff --git a/tests/spec/arb_map_buffer_alignment/CMakeLists.txt b/tests/spec/arb_map_buffer_alignment/CMakeLists.txt
> new file mode 100644
> index 0000000..144a306
> --- /dev/null
> +++ b/tests/spec/arb_map_buffer_alignment/CMakeLists.txt
> @@ -0,0 +1 @@
> +piglit_include_target_api()
> diff --git a/tests/spec/arb_map_buffer_alignment/sanity_test.c b/tests/spec/arb_map_buffer_alignment/sanity_test.c
> new file mode 100644
> index 0000000..56e3433
> --- /dev/null
> +++ b/tests/spec/arb_map_buffer_alignment/sanity_test.c
> @@ -0,0 +1,91 @@
> +/*
> + * Copyright © Marek Olšák <maraeo at gmail.com>
> + *
> + * 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.
> + */
> +
> +
> +#include "piglit-util-gl-common.h"
> +
> +PIGLIT_GL_TEST_CONFIG_BEGIN
> +
> +	config.supports_gl_compat_version = 10;
> +
> +	config.window_width = 100;
> +	config.window_height = 100;
> +	config.window_visual = PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_DOUBLE;
> +
> +PIGLIT_GL_TEST_CONFIG_END
> +
> +enum piglit_result
> +piglit_display(void)
> +{
> +	return PIGLIT_FAIL;
> +}
> +
> +void
> +piglit_init(int argc, char *argv[])
> +{
> +	GLuint b1, b2;
> +	uintptr_t ptr;
> +	GLint alignment = 0;
> +
> +	piglit_require_gl_version(15);
> +
> +	piglit_require_extension("GL_ARB_map_buffer_range");
> +	piglit_require_extension("GL_ARB_map_buffer_alignment");
> +
> +	glGetIntegerv(GL_MIN_MAP_BUFFER_ALIGNMENT, &alignment);
> +
> +	/* Sanity check. */
> +	if (alignment < 64) {
> +		printf("GL_MIN_MAP_BUFFER_ALIGNMENT must be at least 64.\n");
> +		piglit_report_result(PIGLIT_FAIL);
> +	}
> +
> +	glGenBuffers(1, &b1);
> +	glBindBuffer(GL_ARRAY_BUFFER, b1);
> +	glBufferData(GL_ARRAY_BUFFER, alignment + 24, NULL, GL_STATIC_DRAW);
> +
> +	glGenBuffers(1, &b2);
> +	glBindBuffer(GL_ARRAY_BUFFER, b2);
> +	glBufferData(GL_ARRAY_BUFFER, 1, NULL, GL_STATIC_DRAW);
> +
> +	/* glMapBufferRange, offset > 0 */
> +	glBindBuffer(GL_ARRAY_BUFFER, b1);
> +	ptr = (intptr_t)glMapBufferRange(GL_ARRAY_BUFFER, 24, alignment,
> +					 GL_MAP_READ_BIT | GL_MAP_WRITE_BIT);
> +
> +	if (ptr && (ptr - 24) % alignment != 0) {
> +		printf("glMapBufferRange returned an unaligned pointer.\n");
> +		piglit_report_result(PIGLIT_FAIL);
> +	}
> +
> +	/* glMapBuffer. */
> +	glBindBuffer(GL_ARRAY_BUFFER, b2);
> +	ptr = (intptr_t)glMapBuffer(GL_ARRAY_BUFFER, GL_READ_WRITE);
> +
> +	if (ptr % alignment != 0) {
> +		printf("glMapBuffer returned an unaligned pointer.\n");
> +		piglit_report_result(PIGLIT_FAIL);
> +	}
> +
> +	piglit_report_result(PIGLIT_PASS);
> +}
>