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drm/vc4: Add support for rendering with ETC1 textures.

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The validation for it ends up being quite simple, but I hadn't got
around to it before merging the driver.  For backwards compatibility,
we also need to add a flag so that the userspace GL driver can easily
tell if the kernel will allow ETC1 textures (on an old kernel, it will
continue to convert to RGBA8)

Signed-off-by: Eric Anholt <eric@anholt.net>
This commit is contained in:
Eric Anholt 2016-11-03 18:53:10 -07:00
parent 457e67a728
commit 7154d76fed
3 changed files with 9 additions and 0 deletions
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include/uapi/drm/vc4_drm.h
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@ -286,6 +286,7 @@ struct drm_vc4_get_hang_state {
#define DRM_VC4_PARAM_V3D_IDENT1 1
#define DRM_VC4_PARAM_V3D_IDENT2 2
#define DRM_VC4_PARAM_SUPPORTS_BRANCHES 3
#define DRM_VC4_PARAM_SUPPORTS_ETC1 4
struct drm_vc4_get_param {
__u32 param;