The resource may have been written to as images previously.

KHR-GL45.shader_image_load_store.advanced-sync-imageAccess2

Fixes:
dEQP-VK.robustness.buffer_access*

TGSI expect vec4 of constants for it's current code paths, and when
doing indirect accesses it does the comparison on vec4 indexes,
however NIR does the indexing on packed float indexes.

This also align the compute path with the other shaders, and
should improve robustness (at least under Vulkan)

This fixes two bugs, one in clearing and one in sign extensions
for S8 only types, and enables it for use.

Fixes:
GTF-GL45.gtf30.GL3Tests.sgis_texture_lod.sgis_texture_lod_basic_lod_selection

when running with filter hacks disable

The way we construt vertex/geom shaders means these can
diverge, so we have to just hammer it out manually,
there are likely optimisation opportuniities in here

This causes correct flushing:
KHR-GL46.shader_image_load_store.non-layered_binding

This fixes tess factors with gl spirv

Do this earlier, gets rid of lots of useless operations

Images only use the format field, and images in an array seem
to have the same format(??), so we just have to handle the
case where no image is bound, when format is NONE.

Only good enough for GL

This fixes remaining test for ARB_gpu_shader5

This passes the dynamic offset value through the sampler code.

Only good enough for GL

We have to run invocations per primitive, not primitives per invocation

TODO fix softpipe

Need to think about the sizings here a bit more

The current code wasn't tracking the primitve lenghts properly
per stream and wasn't handling the end primitives properly
for the non-0 stream. If the 0 stream has no primitives, the
code would end instead of doing streamout.

Fixes: KHR-GL45.transform_feedback.draw_xfb_stream_test

This fixes piglit arb_viewport_array-render-viewport-2

This doesn't pass thie piglits because currently they are broken
for case where GL upgrades 2 samples to 4

Some tests were using a 1x1 fb bound, with a 2x2 viewport,
and all 4 pixels were getting rendered. Test if the fb bounds
need planes added or not.

Closes: mesa/mesa#3101

This has to be unsigned, so clamping works properly for border
colors.

Fixes dEQP-GLES31.functional.texture.border_clamp.range_clamp.nearest_uint_stencil

I'm not sure why this code was if (0), but if (1) for it fixes
dEQP-GLES31.functional.texture.border_clamp.range_clamp.nearest_float_color
This test expects +inf to get mapped to 255 and -inf to 0, both values
were ending up at 0.

This fixes:
dEQP-GLES31.functional.draw_indirect.random.2

which ends up with 3x32-bit USCALED values going down this path
some of which have the top bit set, and end up converted to signed
float instead of unsigned float values.

This fixes some vulkan tests later.

Fixes crash in
dEQP-GLES31.functional.synchronization.inter_invocation.image_write_read