From 7e756faaba5b706142266c52e621534c0ff46c67 Mon Sep 17 00:00:00 2001 From: Jannik Vogel Date: Thu, 12 May 2016 10:25:38 +0200 Subject: [PATCH] Move program_counter and call_stack from UnitState to interpreter --- src/video_core/shader/shader.cpp | 2 - src/video_core/shader/shader.h | 17 ----- src/video_core/shader/shader_interpreter.cpp | 68 ++++++++++++-------- 3 files changed, 42 insertions(+), 45 deletions(-) diff --git a/src/video_core/shader/shader.cpp b/src/video_core/shader/shader.cpp index 449fc703f..e93a9d92a 100644 --- a/src/video_core/shader/shader.cpp +++ b/src/video_core/shader/shader.cpp @@ -67,7 +67,6 @@ OutputVertex ShaderSetup::Run(UnitState& state, const InputVertex& input, MICROPROFILE_SCOPE(GPU_Shader); - state.program_counter = config.main_offset; state.debug.max_offset = 0; state.debug.max_opdesc_id = 0; @@ -143,7 +142,6 @@ OutputVertex ShaderSetup::Run(UnitState& state, const InputVertex& input, DebugData ShaderSetup::ProduceDebugInfo(const InputVertex& input, int num_attributes, const Regs::ShaderConfig& config, const ShaderSetup& setup) { UnitState state; - state.program_counter = config.main_offset; state.debug.max_offset = 0; state.debug.max_opdesc_id = 0; diff --git a/src/video_core/shader/shader.h b/src/video_core/shader/shader.h index 828c0a0e9..983e4a967 100644 --- a/src/video_core/shader/shader.h +++ b/src/video_core/shader/shader.h @@ -272,29 +272,12 @@ struct UnitState { } registers; static_assert(std::is_pod::value, "Structure is not POD"); - u32 program_counter; bool conditional_code[2]; // Two Address registers and one loop counter // TODO: How many bits do these actually have? s32 address_registers[3]; - enum { - INVALID_ADDRESS = 0xFFFFFFFF - }; - - struct CallStackElement { - u32 final_address; // Address upon which we jump to return_address - u32 return_address; // Where to jump when leaving scope - u8 repeat_counter; // How often to repeat until this call stack element is removed - u8 loop_increment; // Which value to add to the loop counter after an iteration - // TODO: Should this be a signed value? Does it even matter? - u32 loop_address; // The address where we'll return to after each loop iteration - }; - - // TODO: Is there a maximal size for this? - boost::container::static_vector call_stack; - DebugData debug; static size_t InputOffset(const SourceRegister& reg) { diff --git a/src/video_core/shader/shader_interpreter.cpp b/src/video_core/shader/shader_interpreter.cpp index 7710f7fbc..3a827d11f 100644 --- a/src/video_core/shader/shader_interpreter.cpp +++ b/src/video_core/shader/shader_interpreter.cpp @@ -29,8 +29,24 @@ namespace Pica { namespace Shader { +constexpr u32 INVALID_ADDRESS = 0xFFFFFFFF; + +struct CallStackElement { + u32 final_address; // Address upon which we jump to return_address + u32 return_address; // Where to jump when leaving scope + u8 repeat_counter; // How often to repeat until this call stack element is removed + u8 loop_increment; // Which value to add to the loop counter after an iteration + // TODO: Should this be a signed value? Does it even matter? + u32 loop_address; // The address where we'll return to after each loop iteration +}; + template void RunInterpreter(UnitState& state) { + // TODO: Is there a maximal size for this? + boost::container::static_vector call_stack; + + u32 program_counter = g_state.regs.vs.main_offset; + const auto& uniforms = g_state.vs.uniforms; const auto& swizzle_data = g_state.vs.swizzle_data; const auto& program_code = g_state.vs.program_code; @@ -41,16 +57,16 @@ void RunInterpreter(UnitState& state) { unsigned iteration = 0; bool exit_loop = false; while (!exit_loop) { - if (!state.call_stack.empty()) { - auto& top = state.call_stack.back(); - if (state.program_counter == top.final_address) { + if (!call_stack.empty()) { + auto& top = call_stack.back(); + if (program_counter == top.final_address) { state.address_registers[2] += top.loop_increment; if (top.repeat_counter-- == 0) { - state.program_counter = top.return_address; - state.call_stack.pop_back(); + program_counter = top.return_address; + call_stack.pop_back(); } else { - state.program_counter = top.loop_address; + program_counter = top.loop_address; } // TODO: Is "trying again" accurate to hardware? @@ -58,20 +74,20 @@ void RunInterpreter(UnitState& state) { } } - const Instruction instr = { program_code[state.program_counter] }; + const Instruction instr = { program_code[program_counter] }; const SwizzlePattern swizzle = { swizzle_data[instr.common.operand_desc_id] }; - static auto call = [](UnitState& state, u32 offset, u32 num_instructions, + static auto call = [&program_counter, &call_stack](UnitState& state, u32 offset, u32 num_instructions, u32 return_offset, u8 repeat_count, u8 loop_increment) { - state.program_counter = offset - 1; // -1 to make sure when incrementing the PC we end up at the correct offset - ASSERT(state.call_stack.size() < state.call_stack.capacity()); - state.call_stack.push_back({ offset + num_instructions, return_offset, repeat_count, loop_increment, offset }); + program_counter = offset - 1; // -1 to make sure when incrementing the PC we end up at the correct offset + ASSERT(call_stack.size() < call_stack.capacity()); + call_stack.push_back({ offset + num_instructions, return_offset, repeat_count, loop_increment, offset }); }; - Record(state.debug, iteration, state.program_counter); + Record(state.debug, iteration, program_counter); if (iteration > 0) - Record(state.debug, iteration - 1, state.program_counter); + Record(state.debug, iteration - 1, program_counter); - state.debug.max_offset = std::max(state.debug.max_offset, 1 + state.program_counter); + state.debug.max_offset = std::max(state.debug.max_offset, 1 + program_counter); auto LookupSourceRegister = [&](const SourceRegister& source_reg) -> const float24* { switch (source_reg.GetRegisterType()) { @@ -519,7 +535,7 @@ void RunInterpreter(UnitState& state) { case OpCode::Id::JMPC: Record(state.debug, iteration, state.conditional_code); if (evaluate_condition(state, instr.flow_control.refx, instr.flow_control.refy, instr.flow_control)) { - state.program_counter = instr.flow_control.dest_offset - 1; + program_counter = instr.flow_control.dest_offset - 1; } break; @@ -527,7 +543,7 @@ void RunInterpreter(UnitState& state) { Record(state.debug, iteration, uniforms.b[instr.flow_control.bool_uniform_id]); if (uniforms.b[instr.flow_control.bool_uniform_id] == !(instr.flow_control.num_instructions & 1)) { - state.program_counter = instr.flow_control.dest_offset - 1; + program_counter = instr.flow_control.dest_offset - 1; } break; @@ -535,7 +551,7 @@ void RunInterpreter(UnitState& state) { call(state, instr.flow_control.dest_offset, instr.flow_control.num_instructions, - state.program_counter + 1, 0, 0); + program_counter + 1, 0, 0); break; case OpCode::Id::CALLU: @@ -544,7 +560,7 @@ void RunInterpreter(UnitState& state) { call(state, instr.flow_control.dest_offset, instr.flow_control.num_instructions, - state.program_counter + 1, 0, 0); + program_counter + 1, 0, 0); } break; @@ -554,7 +570,7 @@ void RunInterpreter(UnitState& state) { call(state, instr.flow_control.dest_offset, instr.flow_control.num_instructions, - state.program_counter + 1, 0, 0); + program_counter + 1, 0, 0); } break; @@ -565,8 +581,8 @@ void RunInterpreter(UnitState& state) { Record(state.debug, iteration, uniforms.b[instr.flow_control.bool_uniform_id]); if (uniforms.b[instr.flow_control.bool_uniform_id]) { call(state, - state.program_counter + 1, - instr.flow_control.dest_offset - state.program_counter - 1, + program_counter + 1, + instr.flow_control.dest_offset - program_counter - 1, instr.flow_control.dest_offset + instr.flow_control.num_instructions, 0, 0); } else { call(state, @@ -584,8 +600,8 @@ void RunInterpreter(UnitState& state) { Record(state.debug, iteration, state.conditional_code); if (evaluate_condition(state, instr.flow_control.refx, instr.flow_control.refy, instr.flow_control)) { call(state, - state.program_counter + 1, - instr.flow_control.dest_offset - state.program_counter - 1, + program_counter + 1, + instr.flow_control.dest_offset - program_counter - 1, instr.flow_control.dest_offset + instr.flow_control.num_instructions, 0, 0); } else { call(state, @@ -607,8 +623,8 @@ void RunInterpreter(UnitState& state) { Record(state.debug, iteration, loop_param); call(state, - state.program_counter + 1, - instr.flow_control.dest_offset - state.program_counter + 1, + program_counter + 1, + instr.flow_control.dest_offset - program_counter + 1, instr.flow_control.dest_offset + 1, loop_param.x, loop_param.z); @@ -625,7 +641,7 @@ void RunInterpreter(UnitState& state) { } } - ++state.program_counter; + ++program_counter; ++iteration; } }