---
src/mesa/state_tracker/st_glsl_to_tgsi.cpp | 17 +++++++++++------
1 file changed, 11 insertions(+), 6 deletions(-)
diff --git a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
index 1020d36..3933e69 100644
--- a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
+++ b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
@@ -1971,9 +1971,17 @@ glsl_to_tgsi_visitor::visit(ir_expression *ir)
assert(ir->type->is_vector() || ir->type->is_scalar());
if (const_offset_ir) {
- index_reg = st_src_reg_for_int(const_offset / 16);
- } else {
- emit(ir, TGSI_OPCODE_USHR, st_dst_reg(index_reg), op[1],
st_src_reg_for_int(4));
+ /* Constant index into constant buffer */
+ cbuf.reladdr = NULL;
+ cbuf.index = const_offset / 16;
+ cbuf.has_index2 = true;
+ }
+ else {
+ /* Relative/variable index into constant buffer */
+ emit(ir, TGSI_OPCODE_USHR, st_dst_reg(index_reg), op[1],
+ st_src_reg_for_int(4));
+ cbuf.reladdr = ralloc(mem_ctx, st_src_reg);
+ memcpy(cbuf.reladdr, &index_reg, sizeof(index_reg));
}
cbuf.swizzle = swizzle_for_size(ir->type->vector_elements);
@@ -1982,9 +1990,6 @@ glsl_to_tgsi_visitor::visit(ir_expression *ir)
const_offset % 16 / 4,
const_offset % 16 / 4);
- cbuf.reladdr = ralloc(mem_ctx, st_src_reg);
- memcpy(cbuf.reladdr, &index_reg, sizeof(index_reg));
-
if (ir->type->base_type == GLSL_TYPE_BOOL) {
emit(ir, TGSI_OPCODE_USNE, result_dst, cbuf, st_src_reg_for_int(0));
} else {
--
1.7.10.4
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