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author | bunnei <bunneidev@gmail.com> | 2016-03-20 05:37:05 +0100 |
---|---|---|
committer | bunnei <bunneidev@gmail.com> | 2016-04-14 05:04:47 +0200 |
commit | c9d10de644078a29e2310791ee221f3bc916e923 (patch) | |
tree | 8383e20e5309d1009a512c0ec6efb80558f1368a /src/video_core/shader | |
parent | shader_jit_x64: Rewrite flow control to support arbitrary CALL and JMP instructions. (diff) | |
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Diffstat (limited to 'src/video_core/shader')
-rw-r--r-- | src/video_core/shader/shader.cpp | 29 | ||||
-rw-r--r-- | src/video_core/shader/shader_jit_x64.cpp | 17 | ||||
-rw-r--r-- | src/video_core/shader/shader_jit_x64.h | 20 |
3 files changed, 28 insertions, 38 deletions
diff --git a/src/video_core/shader/shader.cpp b/src/video_core/shader/shader.cpp index 78d295c76..e17368a4a 100644 --- a/src/video_core/shader/shader.cpp +++ b/src/video_core/shader/shader.cpp @@ -28,15 +28,8 @@ namespace Pica { namespace Shader { #ifdef ARCHITECTURE_x86_64 -static std::unordered_map<u64, CompiledShader*> shader_map; -static JitCompiler jit; -static CompiledShader* jit_shader; - -static void ClearCache() { - shader_map.clear(); - jit.Clear(); - LOG_INFO(HW_GPU, "Shader JIT cache cleared"); -} +static std::unordered_map<u64, std::unique_ptr<JitCompiler>> shader_map; +static const JitCompiler* jit_shader; #endif // ARCHITECTURE_x86_64 void Setup(UnitState<false>& state) { @@ -48,16 +41,12 @@ void Setup(UnitState<false>& state) { auto iter = shader_map.find(cache_key); if (iter != shader_map.end()) { - jit_shader = iter->second; + jit_shader = iter->second.get(); } else { - // Check if remaining JIT code space is enough for at least one more (massive) shader - if (jit.GetSpaceLeft() < jit_shader_size) { - // If not, clear the cache of all previously compiled shaders - ClearCache(); - } - - jit_shader = jit.Compile(); - shader_map.emplace(cache_key, jit_shader); + auto shader = std::make_unique<JitCompiler>(); + shader->Compile(); + jit_shader = shader.get(); + shader_map[cache_key] = std::move(shader); } } #endif // ARCHITECTURE_x86_64 @@ -65,7 +54,7 @@ void Setup(UnitState<false>& state) { void Shutdown() { #ifdef ARCHITECTURE_x86_64 - ClearCache(); + shader_map.clear(); #endif // ARCHITECTURE_x86_64 } @@ -109,7 +98,7 @@ OutputVertex Run(UnitState<false>& state, const InputVertex& input, int num_attr #ifdef ARCHITECTURE_x86_64 if (VideoCore::g_shader_jit_enabled) - jit_shader(&state.registers); + jit_shader->Run(&state.registers); else RunInterpreter(state); #else diff --git a/src/video_core/shader/shader_jit_x64.cpp b/src/video_core/shader/shader_jit_x64.cpp index c798992ec..3da4e51fa 100644 --- a/src/video_core/shader/shader_jit_x64.cpp +++ b/src/video_core/shader/shader_jit_x64.cpp @@ -589,7 +589,7 @@ void JitCompiler::Compile_CALL(Instruction instr) { fixup_branches.push_back({ b, instr.flow_control.dest_offset }); // Make sure that if the above code changes, SKIP gets updated - ASSERT(reinterpret_cast<uintptr_t>(GetCodePtr()) - start == SKIP); + ASSERT(reinterpret_cast<ptrdiff_t>(GetCodePtr()) - start == SKIP); } void JitCompiler::Compile_CALLC(Instruction instr) { @@ -803,8 +803,8 @@ void JitCompiler::FindReturnOffsets() { } } -CompiledShader* JitCompiler::Compile() { - const u8* start = GetCodePtr(); +void JitCompiler::Compile() { + program = (CompiledShader*)GetCodePtr(); // The stack pointer is 8 modulo 16 at the entry of a procedure ABI_PushRegistersAndAdjustStack(ABI_ALL_CALLEE_SAVED, 8); @@ -850,15 +850,14 @@ CompiledShader* JitCompiler::Compile() { SetJumpTarget(branch.first, code_ptr[branch.second]); } - return (CompiledShader*)start; -} + uintptr_t size = reinterpret_cast<uintptr_t>(GetCodePtr()) - reinterpret_cast<uintptr_t>(program); + ASSERT_MSG(size <= MAX_SHADER_SIZE, "Compiled a shader that exceeds the allocated size!"); -JitCompiler::JitCompiler() { - AllocCodeSpace(jit_cache_size); + LOG_DEBUG(HW_GPU, "Compiled shader size=%d", size); } -void JitCompiler::Clear() { - ClearCodeSpace(); +JitCompiler::JitCompiler() { + AllocCodeSpace(MAX_SHADER_SIZE); } } // namespace Shader diff --git a/src/video_core/shader/shader_jit_x64.h b/src/video_core/shader/shader_jit_x64.h index d6f03892d..19f9bdb56 100644 --- a/src/video_core/shader/shader_jit_x64.h +++ b/src/video_core/shader/shader_jit_x64.h @@ -22,10 +22,8 @@ namespace Pica { namespace Shader { -/// Memory needed to be available to compile the next shader (otherwise, clear the cache) -constexpr size_t jit_shader_size = 1024 * 512; -/// Memory allocated for the JIT code space cache -constexpr size_t jit_cache_size = 1024 * 1024 * 8; +/// Memory allocated for each compiled shader (64Kb) +constexpr size_t MAX_SHADER_SIZE = 1024 * 64; using CompiledShader = void(void* registers); @@ -37,9 +35,11 @@ class JitCompiler : public Gen::XCodeBlock { public: JitCompiler(); - CompiledShader* Compile(); + void Run(void* registers) const { + program(registers); + } - void Clear(); + void Compile(); void Compile_ADD(Instruction instr); void Compile_DP3(Instruction instr); @@ -104,12 +104,14 @@ private: /// Offsets in code where a return needs to be inserted std::set<unsigned> return_offsets; - unsigned last_program_counter; ///< Offset of the most recent instruction decoded - unsigned program_counter; ///< Offset of the next instruction to decode - bool looping = false; ///< True if compiling a loop, used to check for nested loops + unsigned last_program_counter = 0; ///< Offset of the most recent instruction decoded + unsigned program_counter = 0; ///< Offset of the next instruction to decode + bool looping = false; ///< True if compiling a loop, used to check for nested loops /// Branches that need to be fixed up once the entire shader program is compiled std::vector<std::pair<Gen::FixupBranch, unsigned>> fixup_branches; + + CompiledShader* program = nullptr; }; } // Shader |