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pan/bi: Add some zero bytes after shaders on Bifrost

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Bifrost will prefetch bytes after the end of shaders, so make sure
these bytes are allocated and zeroed.

Fixes GPU faults in Xonotic.

Suggested-by: Boris Brezillon <boris.brezillon@collabora.com>
Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8428>
This commit is contained in:
Icecream95 2021-01-12 22:31:55 +13:00 • committed by Marge Bot
parent e74b2edcef
commit bfcdc8f174
1 changed files with 4 additions and 0 deletions
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4
src/panfrost/bifrost/bifrost_compile.c
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@ -2236,6 +2236,10 @@ bifrost_compile_shader_nir(void *mem_ctx, nir_shader *nir,
bifrost_debug & BIFROST_DBG_VERBOSE);
}
/* Pad the shader with enough zero bytes to trick the prefetcher */
memset(util_dynarray_grow(&program->compiled, uint8_t, BIFROST_SHADER_PREFETCH),
0, BIFROST_SHADER_PREFETCH);
program->tls_size = ctx->tls_size;
if ((bifrost_debug & BIFROST_DBG_SHADERDB || inputs->shaderdb) &&