01e3f43007
We are already ensuring that we only copy the appropriate pixel
rect via the scissor and viewport state, so there is no need to
do this check in the shader.
Using a stress test with 100 buffer to image copies of a single
layered image with 10 miplevels recorded into a command buffer and
measuring the time it gets to execute the command buffer we get
these results:
| Execution Time |
----------|----------------|
master | 0.142s |
----------|----------------|
patch | 0.071s |
Reviewed-by: Alejandro Piñeiro <apinheiro@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7671>