* We preserve each API's interpretation of bit order for packed formats like
RGBA4 or R5G6B5 when displaying the raw data in the UI, but when we need to
proxy it or save to disk, we always transform to D3D's order as standard.
* This allows us to proxy them reliably because we always have a standard bit
order and APIs that need a different order transform when fetching data to the
standard format, or setting proxy data from the standard format.
- For counting the number of fragments, also need to disable the depth
bounds test, since we are not initializing the depth value currently
- Reset depth to 0.0f for shader out, and set it to always pass. So that
we can get depth values from just one fragment.
- Initialize premod value for individual fragment events. This is not
surfaced in the UI, but available from the python API and checked in
tests.
The rules for merging semantics into an array were not strict enough.
If either the type, interpolation mode, or size is different, or if it
is not using a register's x component, then we can't combine it. Also,
the rules for marking a semantic as array length 1 were too strict,
resulting in some semantics packing into other registers incorrectly.
* This also fixes a case where pipelines with dynamic stencil masks wouldn't
have the masks properly set for stencil counting and we wouldn't get shader
output properly.
* We change to use VarType instead of CompType for signature parameters which
allows us to represent different types of variables beyond just
unsigned/signed integer and float.
Use a separate compute shader module for MSAA copy, and output
directly into the destination buffer instead of creating
staging resources.
Support case where there is no depth stencil attachment to get post mod
values in per fragment reporting. Previously used the original
framebuffer that might not have had depth/stencil view, so couldn't
count the fragments. Now use the sub image.
To get the post mod color, we need to blend with the premod color, so
we use vkCmdCopyImage to copy from the original image.
Colour only, depth/stencil copy not supported.
This means that we only report pre-mod and post-mod colour values for
events. Since stencil copy is not supported, number of fragments is
not reported, and shader output is not queried.
baldurk