diff options
Diffstat (limited to 'src/gallium/drivers/ilo/ilo_resource.c')
| -rw-r--r-- | src/gallium/drivers/ilo/ilo_resource.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/src/gallium/drivers/ilo/ilo_resource.c b/src/gallium/drivers/ilo/ilo_resource.c index cb8e1cbbb53..46eaae65885 100644 --- a/src/gallium/drivers/ilo/ilo_resource.c +++ b/src/gallium/drivers/ilo/ilo_resource.c @@ -1385,6 +1385,23 @@ buf_create(struct pipe_screen *screen, const struct pipe_resource *templ) if (templ->bind & PIPE_BIND_SAMPLER_VIEW) buf->bo_size = align(buf->bo_size, 256) + 16; + if (templ->bind & PIPE_BIND_VERTEX_BUFFER) { + /* + * As noted in ilo_translate_format(), we treat some 3-component formats + * as 4-component formats to work around hardware limitations. Imagine + * the case where the vertex buffer holds a single + * PIPE_FORMAT_R16G16B16_FLOAT vertex, and buf->bo_size is 6. The + * hardware would fail to fetch it at boundary check because the vertex + * buffer is expected to hold a PIPE_FORMAT_R16G16B16A16_FLOAT vertex + * and that takes at least 8 bytes. + * + * For the workaround to work, we should add 2 to the bo size. But that + * would waste a page when the bo size is already page aligned. Let's + * round it to page size for now and revisit this when needed. + */ + buf->bo_size = align(buf->bo_size, 4096); + } + if (!buf_create_bo(buf)) { FREE(buf); return NULL; |