[Mesa-dev] [PATCH 04/12] i965/fs: Pass a BAD_FILE header source to LOAD_PAYLOAD in emit_texture_gen7().

[Francisco Jerez]

So that it's left uninitialized by LOAD_PAYLOAD, we only need to
reserve space for it in the message since it will be initialized
implicitly by the generator.
---
 src/mesa/drivers/dri/i965/brw_fs_visitor.cpp | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp b/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp
index 522e13e..89fcc49 100644
--- a/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp
+++ b/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp
@@ -473,8 +473,9 @@ fs_visitor::emit_texture_gen7(ir_texture_opcode op, fs_reg dst,
    if (op == ir_tg4 || offset_value.file != BAD_FILE ||
        is_high_sampler(devinfo, sampler)) {
       /* For general texture offsets (no txf workaround), we need a header to
-       * put them in.  Note that for SIMD16 we're making space for two actual
-       * hardware registers here, so the emit will have to fix up for this.
+       * put them in.  Note that we're only reserving space for it in the
+       * message payload as it will be initialized implicitly by the
+       * generator.
        *
        * * ir4_tg4 needs to place its channel select in the header,
        * for interaction with ARB_texture_swizzle
@@ -483,7 +484,7 @@ fs_visitor::emit_texture_gen7(ir_texture_opcode op, fs_reg dst,
        * need to offset the Sampler State Pointer in the header.
        */
       header_size = 1;
-      sources[0] = fs_reg(GRF, alloc.allocate(1), BRW_REGISTER_TYPE_UD);
+      sources[0] = fs_reg();
       length++;
    }
 
-- 
2.4.3