This is required to disable dithering on a per-draw basis when OPAQUE
output is used (bypassing the blender which normally uses the
round_to_framebuffer_precision flag to do the same).
This functionally reverts:
ebc07f4b2f ("panfrost: Remove padded unorm blendable formats")
fae90a7940 ("panfrost: Always pick dithered tb formats")
while adding the functionality to make them useful.
Signed-off-by: Alyssa Rosenzweig <alyssa@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/12152>
On Bifrost, fragment shaders might output either FP16 or FP32. The blend
shader will access the output as-is within the register, so depending on
the precision of the blend shader's logic, it may need to insert a
f2f16 or f2f32 conversion. This requires expanding the blend shader key.
Signed-off-by: Alyssa Rosenzweig <alyssa@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/10393>
Most of it is API-independent, so let's move it out of the gallium
driver so it can be shared with the Vulkan driver.
Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
Acked-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8963>
Alyssa Rosenzweig
Boris Brezillon