zink: Cap PIPE_SHADER_CAP_MAX_CONST_BUFFERS to 32
PIPE_MAX_CONSTANT_BUFFERS is 32, however many Vulkan implementations
has maxPerStageDescriptorUniformBuffers that exceeds it, for example:
radv 8388606,
anv 64
nvidia 1048580 for RTX 2000 and up.
and, together with the current zink logic, the returned value
will exceed the maximum allowed value for the cap.
This causes cso_destroy_context to pass big values back to zink
(via zink_set_constant_buffer), resulting in access beyond end of
allocated buffer for all UBOs.
Cap the cap to PIPE_MAX_CONSTANT_BUFFERS (32), not INT_MAX.
Add an assert to verify future drivers.
Reviewed-by: Erik Faye-Lund <erik.faye-lund@collabora.com>
Fixes: daaf5f1d186 ("gallium: Fix leak of currently bound UBOs at CSO context destruction.")
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7976>
(cherry picked from commit e2b4247e403957ebd9767b2e8700442306c7e7c6)
3 files changed