diff options
| -rw-r--r-- | src/mesa/program/ir_to_mesa.cpp | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/src/mesa/program/ir_to_mesa.cpp b/src/mesa/program/ir_to_mesa.cpp index c7a8594f729..98da90d359a 100644 --- a/src/mesa/program/ir_to_mesa.cpp +++ b/src/mesa/program/ir_to_mesa.cpp @@ -123,6 +123,7 @@ public: /** Pointer to the ir source this tree came from for debugging */ ir_instruction *ir; GLboolean cond_update; + bool saturate; int sampler; /**< sampler index */ int tex_target; /**< One of TEXTURE_*_INDEX */ GLboolean tex_shadow; @@ -288,6 +289,7 @@ public: GLboolean try_emit_mad(ir_expression *ir, int mul_operand); + GLboolean try_emit_sat(ir_expression *ir); void emit_swz(ir_expression *ir); @@ -939,6 +941,32 @@ ir_to_mesa_visitor::try_emit_mad(ir_expression *ir, int mul_operand) return true; } +GLboolean +ir_to_mesa_visitor::try_emit_sat(ir_expression *ir) +{ + /* Saturates were only introduced to vertex programs in + * NV_vertex_program3, so don't give them to drivers in the VP. + */ + if (this->prog->Target == GL_VERTEX_PROGRAM_ARB) + return false; + + ir_rvalue *sat_src = ir->as_rvalue_to_saturate(); + if (!sat_src) + return false; + + sat_src->accept(this); + ir_to_mesa_src_reg src = this->result; + + this->result = get_temp(ir->type); + ir_to_mesa_instruction *inst; + inst = ir_to_mesa_emit_op1(ir, OPCODE_MOV, + ir_to_mesa_dst_reg_from_src(this->result), + src); + inst->saturate = true; + + return true; +} + void ir_to_mesa_visitor::reladdr_to_temp(ir_instruction *ir, ir_to_mesa_src_reg *reg, int *num_reladdr) @@ -1092,6 +1120,8 @@ ir_to_mesa_visitor::visit(ir_expression *ir) if (try_emit_mad(ir, 0)) return; } + if (try_emit_sat(ir)) + return; if (ir->operation == ir_quadop_vector) { this->emit_swz(ir); @@ -2678,6 +2708,8 @@ get_mesa_program(struct gl_context *ctx, struct gl_shader_program *shader_progra mesa_inst->Opcode = inst->op; mesa_inst->CondUpdate = inst->cond_update; + if (inst->saturate) + mesa_inst->SaturateMode = SATURATE_ZERO_ONE; mesa_inst->DstReg.File = inst->dst_reg.file; mesa_inst->DstReg.Index = inst->dst_reg.index; mesa_inst->DstReg.CondMask = inst->dst_reg.cond_mask; |