diff options
Diffstat (limited to 'src/mesa/state_tracker')
| -rw-r--r-- | src/mesa/state_tracker/st_glsl_to_tgsi.cpp | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp index 15a1a3c51c4..e38617ae9fe 100644 --- a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp +++ b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp @@ -695,13 +695,13 @@ glsl_to_tgsi_visitor::emit_arl(ir_instruction *ir, st_src_reg tmp = get_temp(glsl_type::float_type); if (src0.type == GLSL_TYPE_INT) - emit(ir, TGSI_OPCODE_I2F, st_dst_reg(tmp), src0); + emit(NULL, TGSI_OPCODE_I2F, st_dst_reg(tmp), src0); else if (src0.type == GLSL_TYPE_UINT) - emit(ir, TGSI_OPCODE_U2F, st_dst_reg(tmp), src0); + emit(NULL, TGSI_OPCODE_U2F, st_dst_reg(tmp), src0); else tmp = src0; - emit(ir, TGSI_OPCODE_ARL, dst, tmp); + emit(NULL, TGSI_OPCODE_ARL, dst, tmp); } /** @@ -1902,6 +1902,17 @@ glsl_to_tgsi_visitor::visit(ir_assignment *ir) l.index++; r.index++; } + } else if (ir->rhs->as_expression() && + this->instructions.get_tail() && + ir->rhs == ((glsl_to_tgsi_instruction *)this->instructions.get_tail())->ir && + type_size(ir->lhs->type) == 1) { + /* To avoid emitting an extra MOV when assigning an expression to a + * variable, change the destination register of the last instruction + * emitted as part of the expression to the assignment variable. + */ + glsl_to_tgsi_instruction *inst; + inst = (glsl_to_tgsi_instruction *)this->instructions.get_tail(); + inst->dst = l; } else { for (i = 0; i < type_size(ir->lhs->type); i++) { emit(ir, TGSI_OPCODE_MOV, l, r); |