From 7154d76fedf549607afbc0d13db9aaf02da5cebf Mon Sep 17 00:00:00 2001 From: Eric Anholt Date: Thu, 3 Nov 2016 18:53:10 -0700 Subject: drm/vc4: Add support for rendering with ETC1 textures. 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 --- drivers/gpu/drm/vc4/vc4_drv.c | 1 + drivers/gpu/drm/vc4/vc4_validate.c | 7 +++++++ 2 files changed, 8 insertions(+) (limited to 'drivers/gpu/drm/vc4') diff --git a/drivers/gpu/drm/vc4/vc4_drv.c b/drivers/gpu/drm/vc4/vc4_drv.c index 8703f56b7947..b087404c2784 100644 --- a/drivers/gpu/drm/vc4/vc4_drv.c +++ b/drivers/gpu/drm/vc4/vc4_drv.c @@ -78,6 +78,7 @@ static int vc4_get_param_ioctl(struct drm_device *dev, void *data, pm_runtime_put(&vc4->v3d->pdev->dev); break; case DRM_VC4_PARAM_SUPPORTS_BRANCHES: + case DRM_VC4_PARAM_SUPPORTS_ETC1: args->value = true; break; default: diff --git a/drivers/gpu/drm/vc4/vc4_validate.c b/drivers/gpu/drm/vc4/vc4_validate.c index 26503e307438..e18f88203d32 100644 --- a/drivers/gpu/drm/vc4/vc4_validate.c +++ b/drivers/gpu/drm/vc4/vc4_validate.c @@ -644,6 +644,13 @@ reloc_tex(struct vc4_exec_info *exec, cpp = 1; break; case VC4_TEXTURE_TYPE_ETC1: + /* ETC1 is arranged as 64-bit blocks, where each block is 4x4 + * pixels. + */ + cpp = 8; + width = (width + 3) >> 2; + height = (height + 3) >> 2; + break; case VC4_TEXTURE_TYPE_BW1: case VC4_TEXTURE_TYPE_A4: case VC4_TEXTURE_TYPE_A1: -- cgit