[Piglit] [PATCH] gl-1.5-vertex-buffer-offsets: test unusual vertex offsets/strides

Marek Olšák maraeo at gmail.com
Fri Jun 19 09:16:26 PDT 2015


I don't see a point in calling piglit_present_results(). Other than that:

Reviewed-by: Marek Olšák <marek.olsak at amd.com>

Marek

On Fri, Jun 19, 2015 at 4:39 PM, Brian Paul <brianp at vmware.com> wrote:
> The draw-vertices tests exercises unusual vertex sizes and strides,
> but not with interleaved arrays.
>
> This test creates a VBO with interleaved vertex positions and colors.
> The colors are positioned at offsets like 9, 10 and 11 bytes from the
> start of the vertex.  Unusual strides between vertices are tested too.
>
> Exercises a bug in Gallium's u_vbuf code where the driver was passed
> pipe_vertex_element::src_offset values which weren't a multiple of
> four, even when PIPE_CAP_VERTEX_ELEMENT_SRC_OFFSET_4BYTE_ALIGNED_ONLY
> returned 1.
> ---
>  tests/all.py                              |   1 +
>  tests/spec/gl-1.5/CMakeLists.gl.txt       |   1 +
>  tests/spec/gl-1.5/vertex-buffer-offsets.c | 124 ++++++++++++++++++++++++++++++
>  3 files changed, 126 insertions(+)
>  create mode 100644 tests/spec/gl-1.5/vertex-buffer-offsets.c
>
> diff --git a/tests/all.py b/tests/all.py
> index ad4c494..ee11be6 100755
> --- a/tests/all.py
> +++ b/tests/all.py
> @@ -1042,6 +1042,7 @@ with profile.group_manager(
>        'normal3b3s-invariance-byte', run_concurrent=False)
>      g(['gl-1.5-normal3b3s-invariance', 'GL_SHORT'],
>        'normal3b3s-invariance-short', run_concurrent=False)
> +    g(['gl-1.5-vertex-buffer-offsets'], 'vertex-buffer-offsets')
>
>  with profile.group_manager(
>          PiglitGLTest,
> diff --git a/tests/spec/gl-1.5/CMakeLists.gl.txt b/tests/spec/gl-1.5/CMakeLists.gl.txt
> index 8dcd95d..f10c6cb 100644
> --- a/tests/spec/gl-1.5/CMakeLists.gl.txt
> +++ b/tests/spec/gl-1.5/CMakeLists.gl.txt
> @@ -10,5 +10,6 @@ link_libraries (
>  )
>
>  piglit_add_executable (gl-1.5-normal3b3s-invariance normal3b3s-invariance.c)
> +piglit_add_executable (gl-1.5-vertex-buffer-offsets vertex-buffer-offsets.c)
>
>  # vim: ft=cmake:
> diff --git a/tests/spec/gl-1.5/vertex-buffer-offsets.c b/tests/spec/gl-1.5/vertex-buffer-offsets.c
> new file mode 100644
> index 0000000..6d58331
> --- /dev/null
> +++ b/tests/spec/gl-1.5/vertex-buffer-offsets.c
> @@ -0,0 +1,124 @@
> +/*
> + * Copyright 2015  VMware, Inc.
> + *
> + * 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.
> + */
> +
> +/*
> + * Test interleaved vertex arrays with unusual element offsets and strides.
> + * Brian Paul
> + */
> +
> +#include "piglit-util-gl.h"
> +
> +PIGLIT_GL_TEST_CONFIG_BEGIN
> +       config.supports_gl_compat_version = 15;
> +       config.window_visual = PIGLIT_GL_VISUAL_RGBA | PIGLIT_GL_VISUAL_DOUBLE;
> +PIGLIT_GL_TEST_CONFIG_END
> +
> +
> +void
> +piglit_init(int argc, char **argv)
> +{
> +       /* nothing */
> +}
> +
> +
> +static bool
> +test_offset_stride(int color_offset, int stride)
> +{
> +       static const GLfloat vertex[4][2] = {
> +               { -1, -1 },
> +               {  1, -1 },
> +               {  1,  1 },
> +               { -1,  1 }
> +       };
> +       static const GLfloat color[4] = { 0.0, 1.0, 0.5, 1.0 };
> +       GLubyte buffer[1000];
> +       GLuint buf;
> +       int i, pos;
> +       bool p;
> +
> +       assert(color_offset >= sizeof(vertex[0]));
> +       assert(stride >= color_offset + sizeof(color));
> +
> +       pos = 0;
> +       for (i = 0; i < 4; i++) {
> +               /* copy vertex position into buffer */
> +               memcpy(buffer + pos, vertex[i], sizeof(vertex[i]));
> +
> +               /* copy vertex color into buffer at unusual offset */
> +               memcpy(buffer + pos + color_offset, color, sizeof(color));
> +
> +               pos += stride;
> +       }
> +       assert(pos <= sizeof(buffer));
> +
> +       glGenBuffers(1, &buf);
> +       glBindBuffer(GL_ARRAY_BUFFER, buf);
> +       glBufferData(GL_ARRAY_BUFFER, sizeof(buffer),
> +                                        buffer, GL_STATIC_DRAW);
> +
> +       glVertexPointer(2, GL_FLOAT, stride, (void *) 0);
> +       glColorPointer(4, GL_FLOAT, stride, (void *) (size_t) color_offset);
> +       glEnable(GL_VERTEX_ARRAY);
> +       glEnable(GL_COLOR_ARRAY);
> +
> +       glClear(GL_COLOR_BUFFER_BIT);
> +       glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
> +
> +       p = piglit_probe_rect_rgba(0, 0, piglit_width, piglit_height, color);
> +
> +       if (!p) {
> +               printf("failure for color_offset %d, stride %d\n",
> +                      color_offset, stride);
> +       }
> +
> +       piglit_present_results();
> +
> +       glDeleteBuffers(1, &buf);
> +
> +       return p;
> +}
> +
> +
> +enum piglit_result
> +piglit_display(void)
> +{
> +       bool pass = true;
> +
> +       /* test nice values */
> +       pass = test_offset_stride(8, 24) && pass;
> +       pass = test_offset_stride(12, 28) && pass;
> +
> +       /* test unual offset */
> +       pass = test_offset_stride(9, 32) && pass;
> +
> +       /* test unual stride */
> +       pass = test_offset_stride(8, 27) && pass;
> +
> +       /* test unusual offset, unusual stride */
> +       pass = test_offset_stride(9, 25) && pass;
> +       pass = test_offset_stride(10, 26) && pass;
> +       pass = test_offset_stride(11, 27) && pass;
> +
> +       return pass ? PIGLIT_PASS : PIGLIT_FAIL;
> +}
> +
> --
> 1.9.1
>
> _______________________________________________
> Piglit mailing list
> Piglit at lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/piglit


More information about the Piglit mailing list