On Wed, Jan 7, 2015 at 4:07 AM, Neil Roberts <n...@linux.intel.com> wrote: > Adds a test which tries setting a uint attrib value to 0x7f817f81. > If this value were interpreted as a float then it would look like a > signalling NaN. If this is passed through an x87 register then it > would get converted to a quiet NaN on store. > > Currently Mesa does this on 32-bit builds (possibly only with > optimisations turned on) so the test fails. The code is in Mesa main > so it should fail on all drivers. > > Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=82668 > --- > > This patch has been sitting as an attachment in the bug report for a > while but I think it would be a good idea to land it in master. > > tests/all.py | 1 + > tests/shaders/CMakeLists.gl.txt | 1 + > tests/shaders/glsl-vs-int-attrib.c | 115 > +++++++++++++++++++++++++++++++++++++ > 3 files changed, 117 insertions(+) > create mode 100644 tests/shaders/glsl-vs-int-attrib.c > > diff --git a/tests/all.py b/tests/all.py > index 051b157..c62749b 100644 > --- a/tests/all.py > +++ b/tests/all.py > @@ -496,6 +496,7 @@ add_concurrent_test(shaders, 'useshaderprogram-bad-type') > add_concurrent_test(shaders, 'useshaderprogram-bad-program') > add_concurrent_test(shaders, 'useshaderprogram-flushverts-1') > add_concurrent_test(shaders, 'point-vertex-id') > +add_concurrent_test(shaders, 'glsl-vs-int-attrib') > for subtest in ('interstage', 'intrastage', 'vs-gs'): > cmdline = 'version-mixing {0}'.format(subtest) > shaders[cmdline] = PiglitGLTest(cmdline, run_concurrent=True) > diff --git a/tests/shaders/CMakeLists.gl.txt b/tests/shaders/CMakeLists.gl.txt > index c827256..3efc6bf 100644 > --- a/tests/shaders/CMakeLists.gl.txt > +++ b/tests/shaders/CMakeLists.gl.txt > @@ -168,5 +168,6 @@ piglit_add_executable (useshaderprogram-bad-type > useshaderprogram-bad-type.c) > piglit_add_executable (useshaderprogram-bad-program > useshaderprogram-bad-program.c) > piglit_add_executable (useshaderprogram-flushverts-1 > useshaderprogram-flushverts-1.c) > piglit_add_executable (version-mixing version-mixing.c) > +piglit_add_executable (glsl-vs-int-attrib glsl-vs-int-attrib.c) > > # vim: ft=cmake: > diff --git a/tests/shaders/glsl-vs-int-attrib.c > b/tests/shaders/glsl-vs-int-attrib.c > new file mode 100644 > index 0000000..9668866 > --- /dev/null > +++ b/tests/shaders/glsl-vs-int-attrib.c > @@ -0,0 +1,115 @@ > +/* > + * Copyright (c) 2014 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 glsl-vs-int-attrib.c > + * > + * Tests that we can set an integer vertex attribute to a value that > + * looks like a signalling NaN if it were interpreted as a float. If > + * an implementation passes this through a floating point variable it > + * might incorrectly get corrupted to a quiet NaN. > + */ > + > +#include "piglit-util-gl.h" > + > +PIGLIT_GL_TEST_CONFIG_BEGIN > + > + config.supports_gl_compat_version = 20; > + > + config.window_visual = PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_DOUBLE; > + > +PIGLIT_GL_TEST_CONFIG_END > + > +/* This value looks like a signalling NaN if it were interpreted as a > + * float */ > +#define TEST_VALUE 0x7f817f81 > + > +#define STR(x) #x > +#define STRINGIFY(x) STR(x) > + > +static const char > +vertex_source[] = > + "#version 130\n" > + "\n" > + "attribute vec4 piglit_vertex;\n" > + "attribute uint a_value;\n" > + "\n" > + "void\n" > + "main()\n" > + "{\n" > + " if (a_value == " STRINGIFY(TEST_VALUE) "u)\n" > + " gl_FrontColor = vec4(1.0, 0.0, 0.0, 1.0);\n"
We usually do green for pass and red for fail. With that changed, Reviewed-by: Matt Turner <matts...@gmail.com> > + " else\n" > + " gl_FrontColor = vec4(0.0, 1.0, 0.0, 1.0);\n" > + " gl_Position = piglit_vertex;\n" > + "}\n"; > + > +static const float red[] = { 1.0f, 0.0f, 0.0f }; _______________________________________________ Piglit mailing list Piglit@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/piglit