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8a84e77b15
Add basic KHR_8bit_storage support for Adreno 750 devices, for now enabling the storageBuffer8BitAccess feature. A separate descriptor is provided for 8-bit storage access. The descriptor index is adjusted appropriately for 8-bit SSBO loads and stores. The 8-bit SSBO loads cannot go through isam since that instruction isn't able to handle those. The ldib and stib instruction encodings are a bit peculiar but they match the blob's image buffer access through VK_FORMAT_R8 and the dedicated descriptor. These loads and stores do not work in vectorized form, so they have to be scalarized. Additionally stores of 8-bit values have to clear up higher bits of those values. 8-bit truncation can leave higher bits as undefined. Zero-extension of 8-bit values has to use masking since the corresponding cov instruction doesn't function as intended. 8-bit sign extension through cov from a non-shared to a shared register also doesn't work, so an exception is applied to avoid it. Conversion of 8-bit values to and from floating-point values also doesn't work with a straightforward cov instruction, instead the conversion has to go through a 16-bit value. Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/9979 Signed-off-by: Zan Dobersek <zdobersek@igalia.com> Reviewed-by: Connor Abbott <cwabbott0@gmail.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/28254> |
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| ci | ||
| drivers | ||
| gallium | ||
| header-stubs | ||
| isl | ||
| mesa3d_theme | ||
| nir | ||
| relnotes | ||
| vulkan | ||
| amber.rst | ||
| android.rst | ||
| application-issues.rst | ||
| ARB_color_buffer_float.txt | ||
| bugs.rst | ||
| codingstyle.rst | ||
| conf.py | ||
| conform.rst | ||
| debugging.rst | ||
| devinfo.rst | ||
| dispatch.rst | ||
| download.rst | ||
| egl.rst | ||
| envvars.rst | ||
| extensions.rst | ||
| faq.rst | ||
| favicon.ico | ||
| favicon.svg | ||
| features.txt | ||
| gallium-nine.rst | ||
| gitlab-ci.yml | ||
| gpu-perf-tracing.rst | ||
| gpuvis.rst | ||
| helpwanted.rst | ||
| history.rst | ||
| index.rst | ||
| install.rst | ||
| isaspec.rst | ||
| libGL.txt | ||
| license.rst | ||
| lists.rst | ||
| macos.rst | ||
| meson.build | ||
| meson.rst | ||
| opengles.rst | ||
| osmesa.rst | ||
| perf.rst | ||
| perfetto.rst | ||
| precompiled.rst | ||
| README.UVD | ||
| README.VCE | ||
| release-calendar.csv | ||
| release-calendar.rst | ||
| release-maintainers-keys.asc | ||
| releasing.rst | ||
| relnotes.rst | ||
| repository.rst | ||
| rusticl.rst | ||
| shading.rst | ||
| sourcetree.rst | ||
| submittingpatches.rst | ||
| systems.rst | ||
| teflon.rst | ||
| u_trace.rst | ||
| utilities.rst | ||
| viewperf.rst | ||
| xlibdriver.rst | ||
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