[Piglit] [PATCH] GL_ARB_texture_buffer_object: New test for error behavior.

[Ian Romanick]

On 06/04/2018 06:45 AM, Illia Iorin wrote:
> This test checks that if we allocate more memory for the buffer
>  than possible, we get GL_OUT_OF_MEMORY error.
> 
> Signed-off-by: Illia Iorin <illia.iorin at globallogic.com>
> ---
>  tests/opengl.py                               |  1 +
>  .../CMakeLists.gl.txt                         |  1 +
>  .../negative-bad-oom.c                        | 61 +++++++++++++++++++
>  3 files changed, 63 insertions(+)
>  create mode 100644 tests/spec/arb_texture_buffer_object/negative-bad-oom.c
> 
> diff --git a/tests/opengl.py b/tests/opengl.py
> index 9c43d32c9..56cf4f041 100644
> --- a/tests/opengl.py
> +++ b/tests/opengl.py
> @@ -2365,6 +2365,7 @@ with profile.test_list.group_manager(
>      g(['arb_texture_buffer_object-max-size'], 'max-size')
>      g(['arb_texture_buffer_object-minmax'], 'minmax')
>      g(['arb_texture_buffer_object-negative-bad-bo'], 'negative-bad-bo')
> +    g(['arb_texture_buffer_object-negative-bad-oom'], 'negative-bad-oom')
>      g(['arb_texture_buffer_object-negative-bad-format'], 'negative-bad-format')
>      g(['arb_texture_buffer_object-negative-bad-target'], 'negative-bad-target')
>      g(['arb_texture_buffer_object-negative-unsupported'],
> diff --git a/tests/spec/arb_texture_buffer_object/CMakeLists.gl.txt b/tests/spec/arb_texture_buffer_object/CMakeLists.gl.txt
> index 959ca0c2f..98d1e16d8 100644
> --- a/tests/spec/arb_texture_buffer_object/CMakeLists.gl.txt
> +++ b/tests/spec/arb_texture_buffer_object/CMakeLists.gl.txt
> @@ -25,3 +25,4 @@ piglit_add_executable (arb_texture_buffer_object-subdata-sync subdata-sync.c)
>  piglit_add_executable (arb_texture_buffer_object-unused-name unused-name.c)
>  piglit_add_executable (arb_texture_buffer_object-fetch-outside-bounds fetch-outside-bounds.c)
>  piglit_add_executable (arb_texture_buffer_object-indexed indexed.c)
> +piglit_add_executable (arb_texture_buffer_object-negative-bad-oom negative-bad-oom.c)
> \ No newline at end of file
> diff --git a/tests/spec/arb_texture_buffer_object/negative-bad-oom.c b/tests/spec/arb_texture_buffer_object/negative-bad-oom.c
> new file mode 100644
> index 000000000..f5c09a41b
> --- /dev/null
> +++ b/tests/spec/arb_texture_buffer_object/negative-bad-oom.c
> @@ -0,0 +1,61 @@
> +/* Copyright © 2018 Illia Iorin 
> + *
> + * 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 negative-bad-oom.c 
> +* This test checks that if you allocate more memory than possible, 
> +* the glGetError() will return  GL_OUT_OF_MEMORY error flag 
> +*/
> +#include "piglit-util-gl.h"
> +
> +PIGLIT_GL_TEST_CONFIG_BEGIN
> +
> +	config.supports_gl_compat_version = 10;

If you're going to attempt this test on compatibility profile, you need
at least 2.0 (because ARB_texture_buffer_object requires it), and you
need to check for at least the GL_ARB_texture_buffer_object extension.
If you take my other comment (below), you'll also need either OpenGL 3.0
or GL_EXT_texture_integer.

I think the right thing is to request 3.0 for both core and compat, then
check for GL_ARB_texture_buffer_object.

> +	config.supports_gl_core_version = 31;
> +
> +	config.window_visual = PIGLIT_GL_VISUAL_DOUBLE | PIGLIT_GL_VISUAL_RGBA;
> +	config.khr_no_error_support = PIGLIT_HAS_ERRORS;
> +
> +PIGLIT_GL_TEST_CONFIG_END
> +
> +enum piglit_result
> +piglit_display(void)
> +{
> +	return PIGLIT_FAIL; /* UNREACHED */
> +}
> +
> +
> +void
> +piglit_init(int argc, char **argv)
> +{
> +	GLuint tex, tbo;
> +	glGenBuffers(1, &tbo);
> +	glBindBuffer(GL_TEXTURE_BUFFER, tbo);
> +
> +	glGenTextures(1, &tex);
> +	glBindTexture(GL_TEXTURE_BUFFER, tex);
> +	glTexBuffer(GL_TEXTURE_BUFFER, GL_R8, tbo)
It seems like there are graphics cards in the world where a 2Gb TexBo is
possible.  At some point we'll scoff at any value you can pick for a
test like this, but we can at least swing for the fence and try a
texture with a larger pixel format.  Maybe GL_RGBA32UI?  That would
attempt 32Gb... that should have a bit more longevity.

> +	glBufferData(GL_TEXTURE_BUFFER,
> +		     INT_MAX , NULL, GL_STATIC_READ);
> +	if (!piglit_check_gl_error(GL_OUT_OF_MEMORY))
> +		piglit_report_result(PIGLIT_FAIL);
> +	piglit_report_result(PIGLIT_PASS);
> +}
> \ No newline at end of file
>