[Mesa-dev] [RFC PATCH 36/40] i965/fs: Make SIMD16 work for UBO gather push constants

[Abdiel Janulgue]

Gather table entries were generated previously in the SIMD8 pass.
Just reuse those entries for SIMD16 so we don't generate a duplicate
set of registers.

Signed-off-by: Abdiel Janulgue <abdiel.janulgue at linux.intel.com>
---
 src/mesa/drivers/dri/i965/brw_fs_visitor.cpp | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp b/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp
index 597e125..18626af 100644
--- a/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp
+++ b/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp
@@ -1086,6 +1086,19 @@ fs_visitor::visit(ir_expression *ir)
       if (use_gather && const_uniform_block && const_offset &&
           (param_index < 128)) {
 
+         if (dispatch_width == 16) {
+            for (int i = 0; i < (int) stage_prog_data->nr_gather_table; i++) {
+               if ((stage_prog_data->gather_table[i].const_block ==
+                    const_uniform_block->value.u[0]) &&
+                   (stage_prog_data->gather_table[i].const_offset ==
+                    const_offset->value.u[0])) {
+                  fs_reg reg(UNIFORM, stage_prog_data->gather_table[i].reg);
+                  result = reg;
+                  return;
+               }
+            }
+         }
+
          fs_reg reg(UNIFORM, param_index);
          reg.type = brw_type_for_base_type(ir->type);
 
-- 
1.9.1