Eric Anholt 5de3cbbb2e nir: Generate load_ubo_vec4 directly for !PIPE_CAP_NATIVE_INTEGERS ...

The prog_to_nir->NIR-to-TGSI change ended up causing regressions on r300,
and svga against r300-class hardware, because nir_lower_uniforms_to_ubo()
introduced shifts that nir_lower_ubo_vec4() tried to reverse, but that NIR
couldn't prove are no-ops (since shifting up and back down may drop bits),
and the hardware can't do the integer ops.

Instead, make it so that nir_lower_uniforms_to_ubo can generate
nir_intrinsic_load_ubo_vec4 directly for !INTEGER hardware.

Fixes: cf3fc79cd0 ("st/mesa: Replace mesa_to_tgsi() with prog_to_nir() and nir_to_tgsi().")
Closes: #4602
Reviewed-By: Mike Blumenkrantz <michael.blumenkrantz@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/10194>

2021-04-16 21:58:00 +00:00

..

cso

docs: anistropy -> anisotropy

2020-10-28 10:27:51 +00:00

buffermapping.rst

docs: fix invalid rst

2021-04-01 08:15:08 +00:00

context.rst

gallium: add take_ownership param into set_constant_buffer to eliminate atomics

2021-01-27 23:53:34 +00:00

cso.rst

merge gallium docs into main docs

2020-07-07 10:22:08 +00:00

debugging.rst

aux/trace: add GALLIUM_TRACE_TRIGGER mode

2021-04-08 00:01:31 +00:00

distro.rst

merge gallium docs into main docs

2020-07-07 10:22:08 +00:00

format.rst

merge gallium docs into main docs

2020-07-07 10:22:08 +00:00

glossary.rst

merge gallium docs into main docs

2020-07-07 10:22:08 +00:00

index.rst

docs: Add some documentation of game GL buffer object mapping behavior.

2021-03-09 09:24:23 -08:00

intro.rst

merge gallium docs into main docs

2020-07-07 10:22:08 +00:00

pipeline.txt

merge gallium docs into main docs

2020-07-07 10:22:08 +00:00

postprocess.rst

docs: move gallium specific docs into gallium folder

2020-07-07 10:22:08 +00:00

resources.rst

merge gallium docs into main docs

2020-07-07 10:22:08 +00:00

screen.rst

nir: Generate load_ubo_vec4 directly for !PIPE_CAP_NATIVE_INTEGERS

2021-04-16 21:58:00 +00:00

tgsi.rst

docs: lod -> LOD

2021-03-31 16:23:19 +00:00