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radv: Use a lower max offchip buffer count.

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No clue what gets fixed by this but both radeonsi and amdvlk do it.

CC: <mesa-stable@lists.freedesktop.org>
Reviewed-by: Dave Airlie <airlied@redhat.com>
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
This commit is contained in:
Bas Nieuwenhuizen 2018-09-03 02:30:48 +02:00
parent 4dc244eb44
commit ab64891f4c
1 changed files with 22 additions and 2 deletions
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24
src/amd/vulkan/radv_device.c
View file

@ -1901,10 +1901,30 @@ radv_get_hs_offchip_param(struct radv_device *device, uint32_t *max_offchip_buff
device->physical_device->rad_info.family != CHIP_CARRIZO &&
device->physical_device->rad_info.family != CHIP_STONEY;
unsigned max_offchip_buffers_per_se = double_offchip_buffers ? 128 : 64;
unsigned max_offchip_buffers = max_offchip_buffers_per_se *
device->physical_device->rad_info.max_se;
unsigned max_offchip_buffers;
unsigned offchip_granularity;
unsigned hs_offchip_param;
/*
* Per RadeonSI:
* This must be one less than the maximum number due to a hw limitation.
* Various hardware bugs in SI, CIK, and GFX9 need this.
*
* Per AMDVLK:
* Vega10 should limit max_offchip_buffers to 508 (4 * 127).
* Gfx7 should limit max_offchip_buffers to 508
* Gfx6 should limit max_offchip_buffers to 126 (2 * 63)
*
* Follow AMDVLK here.
*/
if (device->physical_device->rad_info.family == CHIP_VEGA10 ||
device->physical_device->rad_info.chip_class == CIK ||
device->physical_device->rad_info.chip_class == SI)
--max_offchip_buffers_per_se;
max_offchip_buffers = max_offchip_buffers_per_se *
device->physical_device->rad_info.max_se;
switch (device->tess_offchip_block_dw_size) {
default:
assert(0);