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@ -29,8 +29,24 @@ namespace Pica { |
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namespace Shader { |
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namespace Shader { |
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constexpr u32 INVALID_ADDRESS = 0xFFFFFFFF; |
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struct CallStackElement { |
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u32 final_address; // Address upon which we jump to return_address
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u32 return_address; // Where to jump when leaving scope
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u8 repeat_counter; // How often to repeat until this call stack element is removed
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u8 loop_increment; // Which value to add to the loop counter after an iteration
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// TODO: Should this be a signed value? Does it even matter?
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u32 loop_address; // The address where we'll return to after each loop iteration
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}; |
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template<bool Debug> |
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template<bool Debug> |
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void RunInterpreter(UnitState<Debug>& state) { |
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void RunInterpreter(UnitState<Debug>& state) { |
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// TODO: Is there a maximal size for this?
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boost::container::static_vector<CallStackElement, 16> call_stack; |
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u32 program_counter = g_state.regs.vs.main_offset; |
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const auto& uniforms = g_state.vs.uniforms; |
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const auto& uniforms = g_state.vs.uniforms; |
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const auto& swizzle_data = g_state.vs.swizzle_data; |
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const auto& swizzle_data = g_state.vs.swizzle_data; |
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const auto& program_code = g_state.vs.program_code; |
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const auto& program_code = g_state.vs.program_code; |
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@ -41,16 +57,16 @@ void RunInterpreter(UnitState<Debug>& state) { |
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unsigned iteration = 0; |
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unsigned iteration = 0; |
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bool exit_loop = false; |
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bool exit_loop = false; |
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while (!exit_loop) { |
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while (!exit_loop) { |
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if (!state.call_stack.empty()) { |
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auto& top = state.call_stack.back(); |
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if (state.program_counter == top.final_address) { |
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if (!call_stack.empty()) { |
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auto& top = call_stack.back(); |
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if (program_counter == top.final_address) { |
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state.address_registers[2] += top.loop_increment; |
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state.address_registers[2] += top.loop_increment; |
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if (top.repeat_counter-- == 0) { |
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if (top.repeat_counter-- == 0) { |
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state.program_counter = top.return_address; |
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state.call_stack.pop_back(); |
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program_counter = top.return_address; |
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call_stack.pop_back(); |
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} else { |
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} else { |
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state.program_counter = top.loop_address; |
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program_counter = top.loop_address; |
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} |
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} |
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// TODO: Is "trying again" accurate to hardware?
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// TODO: Is "trying again" accurate to hardware?
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@ -58,20 +74,20 @@ void RunInterpreter(UnitState<Debug>& state) { |
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} |
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} |
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} |
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} |
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const Instruction instr = { program_code[state.program_counter] }; |
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const Instruction instr = { program_code[program_counter] }; |
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const SwizzlePattern swizzle = { swizzle_data[instr.common.operand_desc_id] }; |
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const SwizzlePattern swizzle = { swizzle_data[instr.common.operand_desc_id] }; |
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static auto call = [](UnitState<Debug>& state, u32 offset, u32 num_instructions, |
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static auto call = [&program_counter, &call_stack](UnitState<Debug>& state, u32 offset, u32 num_instructions, |
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u32 return_offset, u8 repeat_count, u8 loop_increment) { |
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u32 return_offset, u8 repeat_count, u8 loop_increment) { |
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state.program_counter = offset - 1; // -1 to make sure when incrementing the PC we end up at the correct offset
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ASSERT(state.call_stack.size() < state.call_stack.capacity()); |
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state.call_stack.push_back({ offset + num_instructions, return_offset, repeat_count, loop_increment, offset }); |
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program_counter = offset - 1; // -1 to make sure when incrementing the PC we end up at the correct offset
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ASSERT(call_stack.size() < call_stack.capacity()); |
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call_stack.push_back({ offset + num_instructions, return_offset, repeat_count, loop_increment, offset }); |
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}; |
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}; |
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Record<DebugDataRecord::CUR_INSTR>(state.debug, iteration, state.program_counter); |
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Record<DebugDataRecord::CUR_INSTR>(state.debug, iteration, program_counter); |
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if (iteration > 0) |
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if (iteration > 0) |
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Record<DebugDataRecord::NEXT_INSTR>(state.debug, iteration - 1, state.program_counter); |
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Record<DebugDataRecord::NEXT_INSTR>(state.debug, iteration - 1, program_counter); |
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state.debug.max_offset = std::max<u32>(state.debug.max_offset, 1 + state.program_counter); |
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state.debug.max_offset = std::max<u32>(state.debug.max_offset, 1 + program_counter); |
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auto LookupSourceRegister = [&](const SourceRegister& source_reg) -> const float24* { |
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auto LookupSourceRegister = [&](const SourceRegister& source_reg) -> const float24* { |
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switch (source_reg.GetRegisterType()) { |
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switch (source_reg.GetRegisterType()) { |
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@ -519,7 +535,7 @@ void RunInterpreter(UnitState<Debug>& state) { |
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case OpCode::Id::JMPC: |
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case OpCode::Id::JMPC: |
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Record<DebugDataRecord::COND_CMP_IN>(state.debug, iteration, state.conditional_code); |
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Record<DebugDataRecord::COND_CMP_IN>(state.debug, iteration, state.conditional_code); |
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if (evaluate_condition(state, instr.flow_control.refx, instr.flow_control.refy, instr.flow_control)) { |
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if (evaluate_condition(state, instr.flow_control.refx, instr.flow_control.refy, instr.flow_control)) { |
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state.program_counter = instr.flow_control.dest_offset - 1; |
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program_counter = instr.flow_control.dest_offset - 1; |
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} |
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} |
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break; |
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break; |
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@ -527,7 +543,7 @@ void RunInterpreter(UnitState<Debug>& state) { |
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Record<DebugDataRecord::COND_BOOL_IN>(state.debug, iteration, uniforms.b[instr.flow_control.bool_uniform_id]); |
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Record<DebugDataRecord::COND_BOOL_IN>(state.debug, iteration, uniforms.b[instr.flow_control.bool_uniform_id]); |
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if (uniforms.b[instr.flow_control.bool_uniform_id] == !(instr.flow_control.num_instructions & 1)) { |
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if (uniforms.b[instr.flow_control.bool_uniform_id] == !(instr.flow_control.num_instructions & 1)) { |
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state.program_counter = instr.flow_control.dest_offset - 1; |
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program_counter = instr.flow_control.dest_offset - 1; |
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} |
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} |
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break; |
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break; |
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@ -535,7 +551,7 @@ void RunInterpreter(UnitState<Debug>& state) { |
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call(state, |
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call(state, |
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instr.flow_control.dest_offset, |
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instr.flow_control.dest_offset, |
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instr.flow_control.num_instructions, |
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instr.flow_control.num_instructions, |
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state.program_counter + 1, 0, 0); |
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program_counter + 1, 0, 0); |
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break; |
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break; |
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case OpCode::Id::CALLU: |
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case OpCode::Id::CALLU: |
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@ -544,7 +560,7 @@ void RunInterpreter(UnitState<Debug>& state) { |
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call(state, |
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call(state, |
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instr.flow_control.dest_offset, |
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instr.flow_control.dest_offset, |
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instr.flow_control.num_instructions, |
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instr.flow_control.num_instructions, |
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state.program_counter + 1, 0, 0); |
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program_counter + 1, 0, 0); |
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} |
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} |
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break; |
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break; |
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@ -554,7 +570,7 @@ void RunInterpreter(UnitState<Debug>& state) { |
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call(state, |
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call(state, |
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instr.flow_control.dest_offset, |
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instr.flow_control.dest_offset, |
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instr.flow_control.num_instructions, |
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instr.flow_control.num_instructions, |
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state.program_counter + 1, 0, 0); |
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program_counter + 1, 0, 0); |
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} |
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} |
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break; |
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break; |
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@ -565,8 +581,8 @@ void RunInterpreter(UnitState<Debug>& state) { |
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Record<DebugDataRecord::COND_BOOL_IN>(state.debug, iteration, uniforms.b[instr.flow_control.bool_uniform_id]); |
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Record<DebugDataRecord::COND_BOOL_IN>(state.debug, iteration, uniforms.b[instr.flow_control.bool_uniform_id]); |
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if (uniforms.b[instr.flow_control.bool_uniform_id]) { |
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if (uniforms.b[instr.flow_control.bool_uniform_id]) { |
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call(state, |
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call(state, |
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state.program_counter + 1, |
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instr.flow_control.dest_offset - state.program_counter - 1, |
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program_counter + 1, |
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instr.flow_control.dest_offset - program_counter - 1, |
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instr.flow_control.dest_offset + instr.flow_control.num_instructions, 0, 0); |
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instr.flow_control.dest_offset + instr.flow_control.num_instructions, 0, 0); |
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} else { |
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} else { |
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call(state, |
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call(state, |
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@ -584,8 +600,8 @@ void RunInterpreter(UnitState<Debug>& state) { |
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Record<DebugDataRecord::COND_CMP_IN>(state.debug, iteration, state.conditional_code); |
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Record<DebugDataRecord::COND_CMP_IN>(state.debug, iteration, state.conditional_code); |
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if (evaluate_condition(state, instr.flow_control.refx, instr.flow_control.refy, instr.flow_control)) { |
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if (evaluate_condition(state, instr.flow_control.refx, instr.flow_control.refy, instr.flow_control)) { |
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call(state, |
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call(state, |
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state.program_counter + 1, |
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instr.flow_control.dest_offset - state.program_counter - 1, |
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program_counter + 1, |
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instr.flow_control.dest_offset - program_counter - 1, |
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instr.flow_control.dest_offset + instr.flow_control.num_instructions, 0, 0); |
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instr.flow_control.dest_offset + instr.flow_control.num_instructions, 0, 0); |
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} else { |
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} else { |
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call(state, |
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call(state, |
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@ -607,8 +623,8 @@ void RunInterpreter(UnitState<Debug>& state) { |
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Record<DebugDataRecord::LOOP_INT_IN>(state.debug, iteration, loop_param); |
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Record<DebugDataRecord::LOOP_INT_IN>(state.debug, iteration, loop_param); |
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call(state, |
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call(state, |
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state.program_counter + 1, |
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instr.flow_control.dest_offset - state.program_counter + 1, |
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program_counter + 1, |
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instr.flow_control.dest_offset - program_counter + 1, |
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instr.flow_control.dest_offset + 1, |
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instr.flow_control.dest_offset + 1, |
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loop_param.x, |
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loop_param.x, |
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loop_param.z); |
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loop_param.z); |
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@ -625,7 +641,7 @@ void RunInterpreter(UnitState<Debug>& state) { |
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} |
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} |
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} |
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} |
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++state.program_counter; |
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++program_counter; |
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++iteration; |
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++iteration; |
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} |
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} |
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} |
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} |
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