radv/gfx10: adjust the LDS size used to compute waves
It's 128KB per CU in WGP.
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/3899>
diff --git a/src/amd/vulkan/radv_shader.c b/src/amd/vulkan/radv_shader.c
index cad95f8..1220b4a 100644
--- a/src/amd/vulkan/radv_shader.c
+++ b/src/amd/vulkan/radv_shader.c
@@ -1336,11 +1336,9 @@
RADV_NUM_PHYSICAL_VGPRS / vgprs);
}
- /* LDS is 64KB per CU (4 SIMDs), divided into 16KB blocks per SIMD
- * that PS can use.
- */
+ unsigned max_lds_per_simd = device->physical_device->rad_info.lds_size_per_cu / device->physical_device->rad_info.num_simd_per_compute_unit;
if (lds_per_wave)
- max_simd_waves = MIN2(max_simd_waves, 16384 / lds_per_wave);
+ max_simd_waves = MIN2(max_simd_waves, max_lds_per_simd / lds_per_wave);
return max_simd_waves;
}
