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i965/vec4: Assert that pull constant load offsets are 16B-aligned.

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Non-16B-aligned pull constant loads are unlikely to be particularly
useful given that you can get roughly the same effect by using
swizzles on the result.

Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
This commit is contained in:
Francisco Jerez 2016-09-01 22:37:57 -07:00
parent 5ca35c6367
commit 6d861968ca
1 changed files with 1 additions and 0 deletions
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src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp
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@ -1651,6 +1651,7 @@ vec4_visitor::emit_pull_constant_load(bblock_t *block, vec4_instruction *inst,
dst_reg temp, src_reg orig_src, dst_reg temp, src_reg orig_src,
int base_offset, src_reg indirect) int base_offset, src_reg indirect)
{ {
assert(orig_src.offset % 16 == 0);
int reg_offset = base_offset + orig_src.offset / 16; int reg_offset = base_offset + orig_src.offset / 16;
const unsigned index = prog_data->base.binding_table.pull_constants_start; const unsigned index = prog_data->base.binding_table.pull_constants_start;