On Wed, Mar 2, 2016 at 12:01 AM, Ian Romanick <i...@freedesktop.org> wrote:
> On 03/01/2016 01:41 PM, Marek Olšák wrote:
>> From: Axel Davy <axel.d...@ens.fr>
>>
>> This will be used by the next commit.
>> ---
>> include/GL/internal/dri_interface.h | 1 +
>> src/egl/drivers/dri2/platform_wayland.c | 8 +++++---
>> src/loader/loader_dri3_helper.c | 6 ++++--
>> 3 files changed, 10 insertions(+), 5 deletions(-)
>>
>> diff --git a/include/GL/internal/dri_interface.h
>> b/include/GL/internal/dri_interface.h
>> index 6bbd3fa..9ff4e4b 100644
>> --- a/include/GL/internal/dri_interface.h
>> +++ b/include/GL/internal/dri_interface.h
>> @@ -1100,6 +1100,7 @@ struct __DRIdri2ExtensionRec {
>> #define __DRI_IMAGE_USE_SCANOUT 0x0002
>> #define __DRI_IMAGE_USE_CURSOR 0x0004 /* Depricated */
>> #define __DRI_IMAGE_USE_LINEAR 0x0008
>> +#define __DRI_IMAGE_USE_BACKBUFFER 0x0010
>>
>>
>> /**
>> diff --git a/src/egl/drivers/dri2/platform_wayland.c
>> b/src/egl/drivers/dri2/platform_wayland.c
>> index 341acb7..ff0d5c8 100644
>> --- a/src/egl/drivers/dri2/platform_wayland.c
>> +++ b/src/egl/drivers/dri2/platform_wayland.c
>> @@ -305,7 +305,7 @@ get_back_bo(struct dri2_egl_surface *dri2_surf)
>> {
>> struct dri2_egl_display *dri2_dpy =
>> dri2_egl_display(dri2_surf->base.Resource.Display);
>> - int i;
>> + int i, use_flags;
>> unsigned int dri_image_format;
>>
>> /* currently supports three WL DRM formats,
>> @@ -352,6 +352,8 @@ get_back_bo(struct dri2_egl_surface *dri2_surf)
>> if (dri2_surf->back == NULL)
>> return -1;
>>
>> + use_flags = __DRI_IMAGE_USE_SHARE | __DRI_IMAGE_USE_BACKBUFFER;
>> +
>
> I think this needs some versioning, but I'm not that familiar with these
> flags. What happens when you use this with a *_dri.so that doesn't know
> what __DRI_IMAGE_USE_BACKBUFFER is?
Nothing. Drivers only look at flags they know.
Marek
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