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i965/fs: Fix fs_inst::regs_read() for uniform pull constant loads

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Previously, fs_inst::regs_read() fell back to depending on the register
width for the second source.  This isn't really correct since it isn't a
SIMD8 value at all, but a SIMD4x2 value.  This commit changes it to
explicitly be always one register.

v2: Use mlen for determining the number of registers read

Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
Acked-by: Francisco Jerez <currojerez@riseup.net>
This commit is contained in:
Jason Ekstrand 2015-06-17 18:02:11 -07:00
parent 241317d59a
commit aca5228011
1 changed files with 6 additions and 0 deletions
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6
src/mesa/drivers/dri/i965/brw_fs.cpp
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@ -715,6 +715,12 @@ fs_inst::regs_read(int arg) const
return mlen;
break;
case FS_OPCODE_UNIFORM_PULL_CONSTANT_LOAD_GEN7:
/* The payload is actually stored in src1 */
if (arg == 1)
return mlen;
break;
case FS_OPCODE_LINTERP:
if (arg == 0)
return exec_size / 4;