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etnaviv: don't halve max_instructions for GC400

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This allows glamor to successfully compile its shaders on the GC400.

When running glamor using the GC400, Xorg reports that the compiled
shaders exceed the maximum allowed instructions because the value
reported from the kernel is halved.

Xserver[314]: etna_draw_vbo:318: compiled shaders are not okay

$ cat /sys/kernel/debug/dri/128/gpu | grep instruction_count
         instruction_count: 256

However, the spec for the Unified vertex-fragment shader explicitly
lists 256 as the maximum number of instructions for each shader
("256 for vertex shaders; 256 for fragment shaders").

Signed-off-by: Kyle Russell <bkylerussell@gmail.com>
Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/16383>
This commit is contained in:
Kyle Russell 2022-05-07 17:56:09 -04:00 • committed by Marge Bot
parent 318d8ce6fc
commit aa29e0d858
1 changed files with 1 additions and 1 deletions
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2
src/gallium/drivers/etnaviv/etnaviv_screen.c
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@ -870,7 +870,7 @@ etna_get_specs(struct etna_screen *screen)
} else {
screen->specs.vs_offset = 0x4000;
screen->specs.ps_offset = 0x6000;
screen->specs.max_instructions = instruction_count / 2;
screen->specs.max_instructions = instruction_count;
}
screen->specs.has_icache = false;
}