diff options
| author | Kevin Rogovin <kevin.rogovin@intel.com> | 2017-09-25 13:34:05 +0300 |
|---|---|---|
| committer | Kenneth Graunke <kenneth@whitecape.org> | 2017-10-29 22:41:23 -0700 |
| commit | d30b5f2f9bea19149f84eb4db23ca3afcadcc0bf (patch) | |
| tree | dfebbcab9994e6bac2d5c74725ee9b8bcfd13217 /src | |
| parent | 992e2cf57f5a1eaab13ea6a3b5904b8248af8c83 (diff) | |
i965: correctly assign SamplerCount of INTERFACE_DESCRIPTOR_DATA
We were dividing by 4 twice. This also papered over a bug where we
were neglecting to clamp the sampler count to the [0, 16] range.
This should have no functional impact, it only affects prefetching.
v2 [Kenneth Graunke]:
- Clamp sampler_count to [0, 16] to avoid overflowing the valid values
for this field. Write a commit message.
Signed-off-by: Kevin Rogovin <kevin.rogovin@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Diffstat (limited to 'src')
| -rw-r--r-- | src/mesa/drivers/dri/i965/genX_state_upload.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/mesa/drivers/dri/i965/genX_state_upload.c b/src/mesa/drivers/dri/i965/genX_state_upload.c index 4ccfd489191..98f69522de5 100644 --- a/src/mesa/drivers/dri/i965/genX_state_upload.c +++ b/src/mesa/drivers/dri/i965/genX_state_upload.c @@ -4237,7 +4237,7 @@ genX(upload_cs_state)(struct brw_context *brw) const struct GENX(INTERFACE_DESCRIPTOR_DATA) idd = { .KernelStartPointer = brw->cs.base.prog_offset, .SamplerStatePointer = stage_state->sampler_offset, - .SamplerCount = DIV_ROUND_UP(stage_state->sampler_count, 4) >> 2, + .SamplerCount = DIV_ROUND_UP(CLAMP(stage_state->sampler_count, 0, 16), 4), .BindingTablePointer = stage_state->bind_bo_offset, .ConstantURBEntryReadLength = cs_prog_data->push.per_thread.regs, .NumberofThreadsinGPGPUThreadGroup = cs_prog_data->threads, |