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i965/vec4: fix scratch reads for 64bit data

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v2: Setup for a 64-bit scratch read by checking the type size of the
    correct register

v3: Use byte_offset() instead of offset()

Reviewed-by: Matt Turner <mattst88@gmail.com>
This commit is contained in:
Iago Toral Quiroga
2016-06-28 12:02:24 +02:00
committed by Samuel Iglesias Gonsálvez
parent e4d9ab609f
commit dcc36f8b29
1 changed files with 14 additions and 2 deletions
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src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp
+14 -2
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@@ -1482,7 +1482,18 @@ vec4_visitor::emit_scratch_read(bblock_t *block, vec4_instruction *inst,
src_reg index = get_scratch_offset(block, inst, orig_src.reladdr,
reg_offset);
emit_before(block, inst, SCRATCH_READ(temp, index));
if (type_sz(orig_src.type) < 8) {
emit_before(block, inst, SCRATCH_READ(temp, index));
} else {
dst_reg shuffled = dst_reg(this, glsl_type::dvec4_type);
dst_reg shuffled_float = retype(shuffled, BRW_REGISTER_TYPE_F);
emit_before(block, inst, SCRATCH_READ(shuffled_float, index));
index = get_scratch_offset(block, inst, orig_src.reladdr, reg_offset + 1);
vec4_instruction *last_read =
SCRATCH_READ(byte_offset(shuffled_float, REG_SIZE), index);
emit_before(block, inst, last_read);
shuffle_64bit_data(temp, src_reg(shuffled), false, block, last_read);
}
}
/**
@@ -1548,7 +1559,8 @@ vec4_visitor::emit_resolve_reladdr(int scratch_loc[], bblock_t *block,
/* Now handle scratch access on src */
if (src.file == VGRF && scratch_loc[src.nr] != -1) {
dst_reg temp = dst_reg(this, glsl_type::vec4_type);
dst_reg temp = dst_reg(this, type_sz(src.type) == 8 ?
glsl_type::dvec4_type : glsl_type::vec4_type);
emit_scratch_read(block, inst, temp, src, scratch_loc[src.nr]);
src.nr = temp.nr;
src.offset %= REG_SIZE;