[Piglit] [PATCH] bugs: reproduce bug 50925 (Primitive Restart + Tranform Feedback)

[Brian Paul]

On 06/28/2012 11:04 AM, Jordan Justen wrote:
> Signed-off-by: Jordan Justen<jordan.l.justen at intel.com>
> ---
>   tests/all.tests              |    1 +
>   tests/bugs/CMakeLists.gl.txt |    1 +
>   tests/bugs/fdo50925.c        |  105 ++++++++++++++++++++++++++++++++++++++++++
>   3 files changed, 107 insertions(+)
>   create mode 100644 tests/bugs/fdo50925.c
>
> diff --git a/tests/all.tests b/tests/all.tests
> index 63937b9..b584375 100644
> --- a/tests/all.tests
> +++ b/tests/all.tests
> @@ -623,6 +623,7 @@ add_plain_test(bugs, 'r300-readcache')
>   add_plain_test(bugs, 'tex1d-2dborder')
>   add_plain_test(bugs, 'tri-tex-crash')
>   add_plain_test(bugs, 'vbo-buffer-unmap')
> +add_plain_test(bugs, 'fdo50925')
>
>   glx = Group()
>   add_plain_test(glx, 'glx-copy-sub-buffer')
> diff --git a/tests/bugs/CMakeLists.gl.txt b/tests/bugs/CMakeLists.gl.txt
> index 64c3093..d5e33e6 100644
> --- a/tests/bugs/CMakeLists.gl.txt
> +++ b/tests/bugs/CMakeLists.gl.txt
> @@ -31,5 +31,6 @@ piglit_add_executable (fdo28551 fdo28551.c)
>   piglit_add_executable (fdo31934 fdo31934.c)
>   piglit_add_executable (tri-tex-crash tri-tex-crash.c)
>   piglit_add_executable (vbo-buffer-unmap vbo-buffer-unmap.c)
> +piglit_add_executable (fdo50925 fdo50925.c)
>
>   # vim: ft=cmake:
> diff --git a/tests/bugs/fdo50925.c b/tests/bugs/fdo50925.c
> new file mode 100644
> index 0000000..3de9642
> --- /dev/null
> +++ b/tests/bugs/fdo50925.c
> @@ -0,0 +1,105 @@
> +/*
> + * Copyright 2010 VMware, Inc.
> + * Copyright (c) 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.
> + */
> +
> +#include "piglit-util.h"
> +
> +PIGLIT_GL_TEST_MAIN(
> +    20 /*window_width*/,
> +    20 /*window_height*/,
> +    GLUT_RGB | GLUT_DOUBLE)
> +
> +GLboolean
> +fdo50925_reproduce()
> +{
> +   GLfloat verts[][2] = {
> +      {  0,  0 },
> +      {  0, 20 },
> +      { 20,  0 },
> +   };
> +   GLubyte indices[4] = {
> +      0,
> +      1,
> +      2,
> +      0xff
> +   };
> +   GLboolean pass = GL_TRUE;
> +   GLuint num_generated_primitives;
> +   GLuint generated_query;
> +
> +   glGenQueries(1,&generated_query);
> +
> +   piglit_ortho_projection(piglit_width, piglit_height, GL_FALSE);
> +
> +   glClear(GL_COLOR_BUFFER_BIT);
> +
> +   glVertexPointer(2, GL_FLOAT, 0, (void *)verts);
> +
> +   glEnableClientState(GL_VERTEX_ARRAY);
> +
> +   glBeginQuery(GL_PRIMITIVES_GENERATED, generated_query);
> +
> +   assert(glGetError()==0);
> +
> +   glEnableClientState(GL_PRIMITIVE_RESTART_NV);
> +   glPrimitiveRestartIndexNV(0xff);
> +
> +   /* Draw */
> +   glDrawElements(GL_TRIANGLE_STRIP, ARRAY_SIZE(indices),
> +                  GL_UNSIGNED_BYTE, indices);
> +
> +   glDisableClientState(GL_PRIMITIVE_RESTART_NV);
> +   glDisableClientState(GL_VERTEX_ARRAY);
> +
> +   glEndQuery(GL_PRIMITIVES_GENERATED);
> +   glGetQueryObjectuiv(generated_query, GL_QUERY_RESULT,
> +&num_generated_primitives);
> +   glDeleteQueries(1,&generated_query);
> +
> +   assert(glGetError()==0);
> +
> +   if (num_generated_primitives != 1) {
> +      fprintf(stderr, "Transform Feedback: expected=1, got=%u\n",
> +              num_generated_primitives);
> +      pass = GL_FALSE;
> +   }
> +
> +   piglit_present_results();
> +
> +   return pass;
> +}
> +
> +
> +enum piglit_result
> +piglit_display(void)
> +{
> +   return fdo50925_reproduce() ? PIGLIT_PASS : PIGLIT_FAIL;
> +}
> +
> +
> +void
> +piglit_init(int argc, char **argv)
> +{
> +   piglit_require_extension("GL_NV_primitive_restart");
> +   piglit_require_gl_version(30);
> +}

The test looks OK.  But I seem to remember someone suggesting that we 
move away from tests being named after bug reports.  It's impossible 
to know what fdo12345.c tests by looking at the name.  It's probably 
better to rename this to something like 
tests/spec/ext_transform_feedback/restart.c

There's piglit helper functions so the test can be used with with GL 
3.x or GL_EXT_transform_feedback.c

-Brian