i965/fs: Handle fixed HW GRF subnr in reg_offset().

This will be useful later on when we start using reg_offset() on fixed
hardware registers.

Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>

diff --git a/src/mesa/drivers/dri/i965/brw_ir_fs.h b/src/mesa/drivers/dri/i965/brw_ir_fs.h
index 2e5c8e5..4ac9baa 100644 (file)
--- a/src/mesa/drivers/dri/i965/brw_ir_fs.h
+++ b/src/mesa/drivers/dri/i965/brw_ir_fs.h
@@ -187,7 +187,8 @@ static inline unsigned
 reg_offset(const fs_reg &r)
 {
    return (r.file == VGRF || r.file == IMM ? 0 : r.nr) *
-          (r.file == UNIFORM ? 4 : REG_SIZE) + r.offset;
+          (r.file == UNIFORM ? 4 : REG_SIZE) + r.offset +
+          (r.file == ARF || r.file == FIXED_GRF ? r.subnr : 0);
 }
 
 /**