If the compositor were to try to handle a GPU reset within the lost
signal (by recreating the renderer) we should avoid referencing renderer
resources after the lost signal. This prevents use after free for such
compositors.
This will become necessary when we switch away from scissoring. For the
time being, this cleans things up a bit and allows for a trivial
blending implementation for textures when that comes.
Avoids repeating the common bits between dma_tex_features and
dma_tex_ycbcr_features, and we will need just the YCbCr-related
flags for shm YCbCr support soon.
These features are required for shm only: the TRANSFER stuff is
for texture upload. We don't need these for DMA-BUFs. Make this
clearer by changing the name.
Also re-order the definitions to group all texture-related features
together.
Based on five calls:
wlr_render_timer_create - creates a timer which can be reused across
frames on the same renderer
wlr_renderer_begin_buffer_pass - now takes a timer so that backends can
record when the rendering starts and finishes
wlr_render_timer_get_time - should be called as late as possible so that
queries can make their way back from the GPU
wlr_render_timer_destroy - self-explanatory
The timer is exposed as an opaque `struct wlr_render_timer` so that
backends can store whatever they want in there.
The Vulkan spec states:
> For the purposes of range expansion and Y′CBCR model conversion,
> the R and B components contain color difference (chroma) values
> and the G component contains luma.
The equations below that sentence also help understand the mapping.
We don't actually need the REPEAT mode, and this makes things more
consistent with the YCbCr sampler (which requires CLAMP_TO_EDGE for
spec compliance).
Also drop borderColor which is unused for this mode.
Fixes the following validation error:
[ VUID-VkImageViewCreateInfo-pNext-01970 ] Object 0: handle = 0x62e00003c400, type = VK_OBJECT_TYPE_DEVICE; | MessageID = 0xf378e14b | vkCreateImageView(): If there is a VkSamplerYcbcrConversion, the imageView must be created with the identity swizzle.
Some formats like sub-sampled YCbCr use a block of bytes to
store the color values for more than one pixel. Update our format
table to be able to handle such formats.
Alexander Orzechowski
Manuel Stoeckl
Simon Ser
q234rty
Rose Hudson