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Merge pull request #1546 from bunnei/refactor-shader-jit

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Shader JIT Part 2
This commit is contained in:
bunnei 2016-04-13 23:36:39 -04:00
commit d89e48679e
7 changed files with 271 additions and 162 deletions
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28
src/common/x64/emitter.cpp
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@ -455,6 +455,18 @@ void XEmitter::CALL(const void* fnptr)
Write32(u32(distance)); Write32(u32(distance));
} }
FixupBranch XEmitter::CALL()
{
FixupBranch branch;
branch.type = 1;
branch.ptr = code + 5;
Write8(0xE8);
Write32(0);
return branch;
}
FixupBranch XEmitter::J(bool force5bytes) FixupBranch XEmitter::J(bool force5bytes)
{ {
FixupBranch branch; FixupBranch branch;
@ -531,6 +543,22 @@ void XEmitter::SetJumpTarget(const FixupBranch& branch)
} }
} }
void XEmitter::SetJumpTarget(const FixupBranch& branch, const u8* target)
{
if (branch.type == 0)
{
s64 distance = (s64)(target - branch.ptr);
ASSERT_MSG(distance >= -0x80 && distance < 0x80, "Jump target too far away, needs force5Bytes = true");
branch.ptr[-1] = (u8)(s8)distance;
}
else if (branch.type == 1)
{
s64 distance = (s64)(target - branch.ptr);
ASSERT_MSG(distance >= -0x80000000LL && distance < 0x80000000LL, "Jump target too far away, needs indirect register");
((s32*)branch.ptr)[-1] = (s32)distance;
}
}
//Single byte opcodes //Single byte opcodes
//There is no PUSHAD/POPAD in 64-bit mode. //There is no PUSHAD/POPAD in 64-bit mode.
void XEmitter::INT3() {Write8(0xCC);} void XEmitter::INT3() {Write8(0xCC);}

2
src/common/x64/emitter.h
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@ -425,12 +425,14 @@ public:
#undef CALL #undef CALL
#endif #endif
void CALL(const void* fnptr); void CALL(const void* fnptr);
FixupBranch CALL();
void CALLptr(OpArg arg); void CALLptr(OpArg arg);
FixupBranch J_CC(CCFlags conditionCode, bool force5bytes = false); FixupBranch J_CC(CCFlags conditionCode, bool force5bytes = false);
void J_CC(CCFlags conditionCode, const u8* addr, bool force5Bytes = false); void J_CC(CCFlags conditionCode, const u8* addr, bool force5Bytes = false);
void SetJumpTarget(const FixupBranch& branch); void SetJumpTarget(const FixupBranch& branch);
void SetJumpTarget(const FixupBranch& branch, const u8* target);
void SETcc(CCFlags flag, OpArg dest); void SETcc(CCFlags flag, OpArg dest);
// Note: CMOV brings small if any benefit on current cpus. // Note: CMOV brings small if any benefit on current cpus.

4
src/video_core/command_processor.cpp
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@ -140,7 +140,7 @@ static void WritePicaReg(u32 id, u32 value, u32 mask) {
immediate_attribute_id = 0; immediate_attribute_id = 0;
Shader::UnitState<false> shader_unit; Shader::UnitState<false> shader_unit;
Shader::Setup(shader_unit); Shader::Setup();
if (g_debug_context) if (g_debug_context)
g_debug_context->OnEvent(DebugContext::Event::VertexLoaded, static_cast<void*>(&immediate_input)); g_debug_context->OnEvent(DebugContext::Event::VertexLoaded, static_cast<void*>(&immediate_input));
@ -300,7 +300,7 @@ static void WritePicaReg(u32 id, u32 value, u32 mask) {
vertex_cache_ids.fill(-1); vertex_cache_ids.fill(-1);
Shader::UnitState<false> shader_unit; Shader::UnitState<false> shader_unit;
Shader::Setup(shader_unit); Shader::Setup();
for (unsigned int index = 0; index < regs.num_vertices; ++index) for (unsigned int index = 0; index < regs.num_vertices; ++index)
{ {

34
src/video_core/shader/shader.cpp
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@ -28,36 +28,24 @@ namespace Pica {
namespace Shader { namespace Shader {
#ifdef ARCHITECTURE_x86_64 #ifdef ARCHITECTURE_x86_64
static std::unordered_map<u64, CompiledShader*> shader_map; static std::unordered_map<u64, std::unique_ptr<JitShader>> shader_map;
static JitCompiler jit; static const JitShader* jit_shader;
static CompiledShader* jit_shader;
static void ClearCache() {
shader_map.clear();
jit.Clear();
LOG_INFO(HW_GPU, "Shader JIT cache cleared");
}
#endif // ARCHITECTURE_x86_64 #endif // ARCHITECTURE_x86_64
void Setup(UnitState<false>& state) { void Setup() {
#ifdef ARCHITECTURE_x86_64 #ifdef ARCHITECTURE_x86_64
if (VideoCore::g_shader_jit_enabled) { if (VideoCore::g_shader_jit_enabled) {
u64 cache_key = (Common::ComputeHash64(&g_state.vs.program_code, sizeof(g_state.vs.program_code)) ^ u64 cache_key = (Common::ComputeHash64(&g_state.vs.program_code, sizeof(g_state.vs.program_code)) ^
Common::ComputeHash64(&g_state.vs.swizzle_data, sizeof(g_state.vs.swizzle_data)) ^ Common::ComputeHash64(&g_state.vs.swizzle_data, sizeof(g_state.vs.swizzle_data)));
g_state.regs.vs.main_offset);
auto iter = shader_map.find(cache_key); auto iter = shader_map.find(cache_key);
if (iter != shader_map.end()) { if (iter != shader_map.end()) {
jit_shader = iter->second; jit_shader = iter->second.get();
} else { } else {
// Check if remaining JIT code space is enough for at least one more (massive) shader auto shader = std::make_unique<JitShader>();
if (jit.GetSpaceLeft() < jit_shader_size) { shader->Compile();
// If not, clear the cache of all previously compiled shaders jit_shader = shader.get();
ClearCache(); shader_map[cache_key] = std::move(shader);
}
jit_shader = jit.Compile();
shader_map.emplace(cache_key, jit_shader);
} }
} }
#endif // ARCHITECTURE_x86_64 #endif // ARCHITECTURE_x86_64
@ -65,7 +53,7 @@ void Setup(UnitState<false>& state) {
void Shutdown() { void Shutdown() {
#ifdef ARCHITECTURE_x86_64 #ifdef ARCHITECTURE_x86_64
ClearCache(); shader_map.clear();
#endif // ARCHITECTURE_x86_64 #endif // ARCHITECTURE_x86_64
} }
@ -109,7 +97,7 @@ OutputVertex Run(UnitState<false>& state, const InputVertex& input, int num_attr
#ifdef ARCHITECTURE_x86_64 #ifdef ARCHITECTURE_x86_64
if (VideoCore::g_shader_jit_enabled) if (VideoCore::g_shader_jit_enabled)
jit_shader(&state.registers); jit_shader->Run(&state.registers, g_state.regs.vs.main_offset);
else else
RunInterpreter(state); RunInterpreter(state);
#else #else

3
src/video_core/shader/shader.h
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@ -339,9 +339,8 @@ struct UnitState {
/** /**
* Performs any shader unit setup that only needs to happen once per shader (as opposed to once per * Performs any shader unit setup that only needs to happen once per shader (as opposed to once per
* vertex, which would happen within the `Run` function). * vertex, which would happen within the `Run` function).
* @param state Shader unit state, must be setup per shader and per shader unit
*/ */
void Setup(UnitState<false>& state); void Setup();
/// Performs any cleanup when the emulator is shutdown /// Performs any cleanup when the emulator is shutdown
void Shutdown(); void Shutdown();

304
src/video_core/shader/shader_jit_x64.cpp
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@ -2,6 +2,7 @@
// Licensed under GPLv2 or any later version // Licensed under GPLv2 or any later version
// Refer to the license.txt file included. // Refer to the license.txt file included.
#include <algorithm>
#include <smmintrin.h> #include <smmintrin.h>
#include "common/x64/abi.h" #include "common/x64/abi.h"
@ -19,73 +20,73 @@ namespace Shader {
using namespace Gen; using namespace Gen;
typedef void (JitCompiler::*JitFunction)(Instruction instr); typedef void (JitShader::*JitFunction)(Instruction instr);
const JitFunction instr_table[64] = { const JitFunction instr_table[64] = {
&JitCompiler::Compile_ADD, // add &JitShader::Compile_ADD, // add
&JitCompiler::Compile_DP3, // dp3 &JitShader::Compile_DP3, // dp3
&JitCompiler::Compile_DP4, // dp4 &JitShader::Compile_DP4, // dp4
&JitCompiler::Compile_DPH, // dph &JitShader::Compile_DPH, // dph
nullptr, // unknown nullptr, // unknown
&JitCompiler::Compile_EX2, // ex2 &JitShader::Compile_EX2, // ex2
&JitCompiler::Compile_LG2, // lg2 &JitShader::Compile_LG2, // lg2
nullptr, // unknown nullptr, // unknown
&JitCompiler::Compile_MUL, // mul &JitShader::Compile_MUL, // mul
&JitCompiler::Compile_SGE, // sge &JitShader::Compile_SGE, // sge
&JitCompiler::Compile_SLT, // slt &JitShader::Compile_SLT, // slt
&JitCompiler::Compile_FLR, // flr &JitShader::Compile_FLR, // flr
&JitCompiler::Compile_MAX, // max &JitShader::Compile_MAX, // max
&JitCompiler::Compile_MIN, // min &JitShader::Compile_MIN, // min
&JitCompiler::Compile_RCP, // rcp &JitShader::Compile_RCP, // rcp
&JitCompiler::Compile_RSQ, // rsq &JitShader::Compile_RSQ, // rsq
nullptr, // unknown nullptr, // unknown
nullptr, // unknown nullptr, // unknown
&JitCompiler::Compile_MOVA, // mova &JitShader::Compile_MOVA, // mova
&JitCompiler::Compile_MOV, // mov &JitShader::Compile_MOV, // mov
nullptr, // unknown nullptr, // unknown
nullptr, // unknown nullptr, // unknown
nullptr, // unknown nullptr, // unknown
nullptr, // unknown nullptr, // unknown
&JitCompiler::Compile_DPH, // dphi &JitShader::Compile_DPH, // dphi
nullptr, // unknown nullptr, // unknown
&JitCompiler::Compile_SGE, // sgei &JitShader::Compile_SGE, // sgei
&JitCompiler::Compile_SLT, // slti &JitShader::Compile_SLT, // slti
nullptr, // unknown nullptr, // unknown
nullptr, // unknown nullptr, // unknown
nullptr, // unknown nullptr, // unknown
nullptr, // unknown nullptr, // unknown
nullptr, // unknown nullptr, // unknown
&JitCompiler::Compile_NOP, // nop &JitShader::Compile_NOP, // nop
&JitCompiler::Compile_END, // end &JitShader::Compile_END, // end
nullptr, // break nullptr, // break
&JitCompiler::Compile_CALL, // call &JitShader::Compile_CALL, // call
&JitCompiler::Compile_CALLC, // callc &JitShader::Compile_CALLC, // callc
&JitCompiler::Compile_CALLU, // callu &JitShader::Compile_CALLU, // callu
&JitCompiler::Compile_IF, // ifu &JitShader::Compile_IF, // ifu
&JitCompiler::Compile_IF, // ifc &JitShader::Compile_IF, // ifc
&JitCompiler::Compile_LOOP, // loop &JitShader::Compile_LOOP, // loop
nullptr, // emit nullptr, // emit
nullptr, // sete nullptr, // sete
&JitCompiler::Compile_JMP, // jmpc &JitShader::Compile_JMP, // jmpc
&JitCompiler::Compile_JMP, // jmpu &JitShader::Compile_JMP, // jmpu
&JitCompiler::Compile_CMP, // cmp &JitShader::Compile_CMP, // cmp
&JitCompiler::Compile_CMP, // cmp &JitShader::Compile_CMP, // cmp
&JitCompiler::Compile_MAD, // madi &JitShader::Compile_MAD, // madi
&JitCompiler::Compile_MAD, // madi &JitShader::Compile_MAD, // madi
&JitCompiler::Compile_MAD, // madi &JitShader::Compile_MAD, // madi
&JitCompiler::Compile_MAD, // madi &JitShader::Compile_MAD, // madi
&JitCompiler::Compile_MAD, // madi &JitShader::Compile_MAD, // madi
&JitCompiler::Compile_MAD, // madi &JitShader::Compile_MAD, // madi
&JitCompiler::Compile_MAD, // madi &JitShader::Compile_MAD, // madi
&JitCompiler::Compile_MAD, // madi &JitShader::Compile_MAD, // madi
&JitCompiler::Compile_MAD, // mad &JitShader::Compile_MAD, // mad
&JitCompiler::Compile_MAD, // mad &JitShader::Compile_MAD, // mad
&JitCompiler::Compile_MAD, // mad &JitShader::Compile_MAD, // mad
&JitCompiler::Compile_MAD, // mad &JitShader::Compile_MAD, // mad
&JitCompiler::Compile_MAD, // mad &JitShader::Compile_MAD, // mad
&JitCompiler::Compile_MAD, // mad &JitShader::Compile_MAD, // mad
&JitCompiler::Compile_MAD, // mad &JitShader::Compile_MAD, // mad
&JitCompiler::Compile_MAD, // mad &JitShader::Compile_MAD, // mad
}; };
// The following is used to alias some commonly used registers. Generally, RAX-RDX and XMM0-XMM3 can // The following is used to alias some commonly used registers. Generally, RAX-RDX and XMM0-XMM3 can
@ -137,6 +138,25 @@ static const u8 NO_SRC_REG_SWIZZLE = 0x1b;
/// Raw constant for the destination register enable mask that indicates all components are enabled /// Raw constant for the destination register enable mask that indicates all components are enabled
static const u8 NO_DEST_REG_MASK = 0xf; static const u8 NO_DEST_REG_MASK = 0xf;
/**
* Get the vertex shader instruction for a given offset in the current shader program
* @param offset Offset in the current shader program of the instruction
* @return Instruction at the specified offset
*/
static Instruction GetVertexShaderInstruction(size_t offset) {
return { g_state.vs.program_code[offset] };
}
static void LogCritical(const char* msg) {
LOG_CRITICAL(HW_GPU, msg);
}
void JitShader::Compile_Assert(bool condition, const char* msg) {
if (!condition) {
ABI_CallFunctionP(reinterpret_cast<const void*>(LogCritical), const_cast<char*>(msg));
}
}
/** /**
* Loads and swizzles a source register into the specified XMM register. * Loads and swizzles a source register into the specified XMM register.
* @param instr VS instruction, used for determining how to load the source register * @param instr VS instruction, used for determining how to load the source register
@ -144,7 +164,7 @@ static const u8 NO_DEST_REG_MASK = 0xf;
* @param src_reg SourceRegister object corresponding to the source register to load * @param src_reg SourceRegister object corresponding to the source register to load
* @param dest Destination XMM register to store the loaded, swizzled source register * @param dest Destination XMM register to store the loaded, swizzled source register
*/ */
void JitCompiler::Compile_SwizzleSrc(Instruction instr, unsigned src_num, SourceRegister src_reg, X64Reg dest) { void JitShader::Compile_SwizzleSrc(Instruction instr, unsigned src_num, SourceRegister src_reg, X64Reg dest) {
X64Reg src_ptr; X64Reg src_ptr;
size_t src_offset; size_t src_offset;
@ -216,7 +236,7 @@ void JitCompiler::Compile_SwizzleSrc(Instruction instr, unsigned src_num, Source
} }
} }
void JitCompiler::Compile_DestEnable(Instruction instr,X64Reg src) { void JitShader::Compile_DestEnable(Instruction instr,X64Reg src) {
DestRegister dest; DestRegister dest;
unsigned operand_desc_id; unsigned operand_desc_id;
if (instr.opcode.Value().EffectiveOpCode() == OpCode::Id::MAD || if (instr.opcode.Value().EffectiveOpCode() == OpCode::Id::MAD ||
@ -263,7 +283,7 @@ void JitCompiler::Compile_DestEnable(Instruction instr,X64Reg src) {
} }
} }
void JitCompiler::Compile_SanitizedMul(Gen::X64Reg src1, Gen::X64Reg src2, Gen::X64Reg scratch) { void JitShader::Compile_SanitizedMul(Gen::X64Reg src1, Gen::X64Reg src2, Gen::X64Reg scratch) {
MOVAPS(scratch, R(src1)); MOVAPS(scratch, R(src1));
CMPPS(scratch, R(src2), CMP_ORD); CMPPS(scratch, R(src2), CMP_ORD);
@ -276,7 +296,7 @@ void JitCompiler::Compile_SanitizedMul(Gen::X64Reg src1, Gen::X64Reg src2, Gen::
ANDPS(src1, R(scratch)); ANDPS(src1, R(scratch));
} }
void JitCompiler::Compile_EvaluateCondition(Instruction instr) { void JitShader::Compile_EvaluateCondition(Instruction instr) {
// Note: NXOR is used below to check for equality // Note: NXOR is used below to check for equality
switch (instr.flow_control.op) { switch (instr.flow_control.op) {
case Instruction::FlowControlType::Or: case Instruction::FlowControlType::Or:
@ -307,23 +327,23 @@ void JitCompiler::Compile_EvaluateCondition(Instruction instr) {
} }
} }
void JitCompiler::Compile_UniformCondition(Instruction instr) { void JitShader::Compile_UniformCondition(Instruction instr) {
int offset = offsetof(decltype(g_state.vs.uniforms), b) + (instr.flow_control.bool_uniform_id * sizeof(bool)); int offset = offsetof(decltype(g_state.vs.uniforms), b) + (instr.flow_control.bool_uniform_id * sizeof(bool));
CMP(sizeof(bool) * 8, MDisp(UNIFORMS, offset), Imm8(0)); CMP(sizeof(bool) * 8, MDisp(UNIFORMS, offset), Imm8(0));
} }
BitSet32 JitCompiler::PersistentCallerSavedRegs() { BitSet32 JitShader::PersistentCallerSavedRegs() {
return persistent_regs & ABI_ALL_CALLER_SAVED; return persistent_regs & ABI_ALL_CALLER_SAVED;
} }
void JitCompiler::Compile_ADD(Instruction instr) { void JitShader::Compile_ADD(Instruction instr) {
Compile_SwizzleSrc(instr, 1, instr.common.src1, SRC1); Compile_SwizzleSrc(instr, 1, instr.common.src1, SRC1);
Compile_SwizzleSrc(instr, 2, instr.common.src2, SRC2); Compile_SwizzleSrc(instr, 2, instr.common.src2, SRC2);
ADDPS(SRC1, R(SRC2)); ADDPS(SRC1, R(SRC2));
Compile_DestEnable(instr, SRC1); Compile_DestEnable(instr, SRC1);
} }
void JitCompiler::Compile_DP3(Instruction instr) { void JitShader::Compile_DP3(Instruction instr) {
Compile_SwizzleSrc(instr, 1, instr.common.src1, SRC1); Compile_SwizzleSrc(instr, 1, instr.common.src1, SRC1);
Compile_SwizzleSrc(instr, 2, instr.common.src2, SRC2); Compile_SwizzleSrc(instr, 2, instr.common.src2, SRC2);
@ -342,7 +362,7 @@ void JitCompiler::Compile_DP3(Instruction instr) {
Compile_DestEnable(instr, SRC1); Compile_DestEnable(instr, SRC1);
} }
void JitCompiler::Compile_DP4(Instruction instr) { void JitShader::Compile_DP4(Instruction instr) {
Compile_SwizzleSrc(instr, 1, instr.common.src1, SRC1); Compile_SwizzleSrc(instr, 1, instr.common.src1, SRC1);
Compile_SwizzleSrc(instr, 2, instr.common.src2, SRC2); Compile_SwizzleSrc(instr, 2, instr.common.src2, SRC2);
@ -359,7 +379,7 @@ void JitCompiler::Compile_DP4(Instruction instr) {
Compile_DestEnable(instr, SRC1); Compile_DestEnable(instr, SRC1);
} }
void JitCompiler::Compile_DPH(Instruction instr) { void JitShader::Compile_DPH(Instruction instr) {
if (instr.opcode.Value().EffectiveOpCode() == OpCode::Id::DPHI) { if (instr.opcode.Value().EffectiveOpCode() == OpCode::Id::DPHI) {
Compile_SwizzleSrc(instr, 1, instr.common.src1i, SRC1); Compile_SwizzleSrc(instr, 1, instr.common.src1i, SRC1);
Compile_SwizzleSrc(instr, 2, instr.common.src2i, SRC2); Compile_SwizzleSrc(instr, 2, instr.common.src2i, SRC2);
@ -391,7 +411,7 @@ void JitCompiler::Compile_DPH(Instruction instr) {
Compile_DestEnable(instr, SRC1); Compile_DestEnable(instr, SRC1);
} }
void JitCompiler::Compile_EX2(Instruction instr) { void JitShader::Compile_EX2(Instruction instr) {
Compile_SwizzleSrc(instr, 1, instr.common.src1, SRC1); Compile_SwizzleSrc(instr, 1, instr.common.src1, SRC1);
MOVSS(XMM0, R(SRC1)); MOVSS(XMM0, R(SRC1));
@ -404,7 +424,7 @@ void JitCompiler::Compile_EX2(Instruction instr) {
Compile_DestEnable(instr, SRC1); Compile_DestEnable(instr, SRC1);
} }
void JitCompiler::Compile_LG2(Instruction instr) { void JitShader::Compile_LG2(Instruction instr) {
Compile_SwizzleSrc(instr, 1, instr.common.src1, SRC1); Compile_SwizzleSrc(instr, 1, instr.common.src1, SRC1);
MOVSS(XMM0, R(SRC1)); MOVSS(XMM0, R(SRC1));
@ -417,14 +437,14 @@ void JitCompiler::Compile_LG2(Instruction instr) {
Compile_DestEnable(instr, SRC1); Compile_DestEnable(instr, SRC1);
} }
void JitCompiler::Compile_MUL(Instruction instr) { void JitShader::Compile_MUL(Instruction instr) {
Compile_SwizzleSrc(instr, 1, instr.common.src1, SRC1); Compile_SwizzleSrc(instr, 1, instr.common.src1, SRC1);
Compile_SwizzleSrc(instr, 2, instr.common.src2, SRC2); Compile_SwizzleSrc(instr, 2, instr.common.src2, SRC2);
Compile_SanitizedMul(SRC1, SRC2, SCRATCH); Compile_SanitizedMul(SRC1, SRC2, SCRATCH);
Compile_DestEnable(instr, SRC1); Compile_DestEnable(instr, SRC1);
} }
void JitCompiler::Compile_SGE(Instruction instr) { void JitShader::Compile_SGE(Instruction instr) {
if (instr.opcode.Value().EffectiveOpCode() == OpCode::Id::SGEI) { if (instr.opcode.Value().EffectiveOpCode() == OpCode::Id::SGEI) {
Compile_SwizzleSrc(instr, 1, instr.common.src1i, SRC1); Compile_SwizzleSrc(instr, 1, instr.common.src1i, SRC1);
Compile_SwizzleSrc(instr, 2, instr.common.src2i, SRC2); Compile_SwizzleSrc(instr, 2, instr.common.src2i, SRC2);
@ -439,7 +459,7 @@ void JitCompiler::Compile_SGE(Instruction instr) {
Compile_DestEnable(instr, SRC2); Compile_DestEnable(instr, SRC2);
} }
void JitCompiler::Compile_SLT(Instruction instr) { void JitShader::Compile_SLT(Instruction instr) {
if (instr.opcode.Value().EffectiveOpCode() == OpCode::Id::SLTI) { if (instr.opcode.Value().EffectiveOpCode() == OpCode::Id::SLTI) {
Compile_SwizzleSrc(instr, 1, instr.common.src1i, SRC1); Compile_SwizzleSrc(instr, 1, instr.common.src1i, SRC1);
Compile_SwizzleSrc(instr, 2, instr.common.src2i, SRC2); Compile_SwizzleSrc(instr, 2, instr.common.src2i, SRC2);
@ -454,7 +474,7 @@ void JitCompiler::Compile_SLT(Instruction instr) {
Compile_DestEnable(instr, SRC1); Compile_DestEnable(instr, SRC1);
} }
void JitCompiler::Compile_FLR(Instruction instr) { void JitShader::Compile_FLR(Instruction instr) {
Compile_SwizzleSrc(instr, 1, instr.common.src1, SRC1); Compile_SwizzleSrc(instr, 1, instr.common.src1, SRC1);
if (Common::GetCPUCaps().sse4_1) { if (Common::GetCPUCaps().sse4_1) {
@ -467,7 +487,7 @@ void JitCompiler::Compile_FLR(Instruction instr) {
Compile_DestEnable(instr, SRC1); Compile_DestEnable(instr, SRC1);
} }
void JitCompiler::Compile_MAX(Instruction instr) { void JitShader::Compile_MAX(Instruction instr) {
Compile_SwizzleSrc(instr, 1, instr.common.src1, SRC1); Compile_SwizzleSrc(instr, 1, instr.common.src1, SRC1);
Compile_SwizzleSrc(instr, 2, instr.common.src2, SRC2); Compile_SwizzleSrc(instr, 2, instr.common.src2, SRC2);
// SSE semantics match PICA200 ones: In case of NaN, SRC2 is returned. // SSE semantics match PICA200 ones: In case of NaN, SRC2 is returned.
@ -475,7 +495,7 @@ void JitCompiler::Compile_MAX(Instruction instr) {
Compile_DestEnable(instr, SRC1); Compile_DestEnable(instr, SRC1);
} }
void JitCompiler::Compile_MIN(Instruction instr) { void JitShader::Compile_MIN(Instruction instr) {
Compile_SwizzleSrc(instr, 1, instr.common.src1, SRC1); Compile_SwizzleSrc(instr, 1, instr.common.src1, SRC1);
Compile_SwizzleSrc(instr, 2, instr.common.src2, SRC2); Compile_SwizzleSrc(instr, 2, instr.common.src2, SRC2);
// SSE semantics match PICA200 ones: In case of NaN, SRC2 is returned. // SSE semantics match PICA200 ones: In case of NaN, SRC2 is returned.
@ -483,7 +503,7 @@ void JitCompiler::Compile_MIN(Instruction instr) {
Compile_DestEnable(instr, SRC1); Compile_DestEnable(instr, SRC1);
} }
void JitCompiler::Compile_MOVA(Instruction instr) { void JitShader::Compile_MOVA(Instruction instr) {
SwizzlePattern swiz = { g_state.vs.swizzle_data[instr.common.operand_desc_id] }; SwizzlePattern swiz = { g_state.vs.swizzle_data[instr.common.operand_desc_id] };
if (!swiz.DestComponentEnabled(0) && !swiz.DestComponentEnabled(1)) { if (!swiz.DestComponentEnabled(0) && !swiz.DestComponentEnabled(1)) {
@ -528,12 +548,12 @@ void JitCompiler::Compile_MOVA(Instruction instr) {
} }
} }
void JitCompiler::Compile_MOV(Instruction instr) { void JitShader::Compile_MOV(Instruction instr) {
Compile_SwizzleSrc(instr, 1, instr.common.src1, SRC1); Compile_SwizzleSrc(instr, 1, instr.common.src1, SRC1);
Compile_DestEnable(instr, SRC1); Compile_DestEnable(instr, SRC1);
} }
void JitCompiler::Compile_RCP(Instruction instr) { void JitShader::Compile_RCP(Instruction instr) {
Compile_SwizzleSrc(instr, 1, instr.common.src1, SRC1); Compile_SwizzleSrc(instr, 1, instr.common.src1, SRC1);
// TODO(bunnei): RCPSS is a pretty rough approximation, this might cause problems if Pica // TODO(bunnei): RCPSS is a pretty rough approximation, this might cause problems if Pica
@ -544,7 +564,7 @@ void JitCompiler::Compile_RCP(Instruction instr) {
Compile_DestEnable(instr, SRC1); Compile_DestEnable(instr, SRC1);
} }
void JitCompiler::Compile_RSQ(Instruction instr) { void JitShader::Compile_RSQ(Instruction instr) {
Compile_SwizzleSrc(instr, 1, instr.common.src1, SRC1); Compile_SwizzleSrc(instr, 1, instr.common.src1, SRC1);
// TODO(bunnei): RSQRTSS is a pretty rough approximation, this might cause problems if Pica // TODO(bunnei): RSQRTSS is a pretty rough approximation, this might cause problems if Pica
@ -555,36 +575,41 @@ void JitCompiler::Compile_RSQ(Instruction instr) {
Compile_DestEnable(instr, SRC1); Compile_DestEnable(instr, SRC1);
} }
void JitCompiler::Compile_NOP(Instruction instr) { void JitShader::Compile_NOP(Instruction instr) {
} }
void JitCompiler::Compile_END(Instruction instr) { void JitShader::Compile_END(Instruction instr) {
ABI_PopRegistersAndAdjustStack(ABI_ALL_CALLEE_SAVED, 8); ABI_PopRegistersAndAdjustStack(ABI_ALL_CALLEE_SAVED, 8);
RET(); RET();
} }
void JitCompiler::Compile_CALL(Instruction instr) { void JitShader::Compile_CALL(Instruction instr) {
unsigned offset = instr.flow_control.dest_offset; // Push offset of the return
while (offset < (instr.flow_control.dest_offset + instr.flow_control.num_instructions)) { PUSH(64, Imm32(instr.flow_control.dest_offset + instr.flow_control.num_instructions));
Compile_NextInstr(&offset);
} // Call the subroutine
FixupBranch b = CALL();
fixup_branches.push_back({ b, instr.flow_control.dest_offset });
// Skip over the return offset that's on the stack
ADD(64, R(RSP), Imm32(8));
} }
void JitCompiler::Compile_CALLC(Instruction instr) { void JitShader::Compile_CALLC(Instruction instr) {
Compile_EvaluateCondition(instr); Compile_EvaluateCondition(instr);
FixupBranch b = J_CC(CC_Z, true); FixupBranch b = J_CC(CC_Z, true);
Compile_CALL(instr); Compile_CALL(instr);
SetJumpTarget(b); SetJumpTarget(b);
} }
void JitCompiler::Compile_CALLU(Instruction instr) { void JitShader::Compile_CALLU(Instruction instr) {
Compile_UniformCondition(instr); Compile_UniformCondition(instr);
FixupBranch b = J_CC(CC_Z, true); FixupBranch b = J_CC(CC_Z, true);
Compile_CALL(instr); Compile_CALL(instr);
SetJumpTarget(b); SetJumpTarget(b);
} }
void JitCompiler::Compile_CMP(Instruction instr) { void JitShader::Compile_CMP(Instruction instr) {
using Op = Instruction::Common::CompareOpType::Op; using Op = Instruction::Common::CompareOpType::Op;
Op op_x = instr.common.compare_op.x; Op op_x = instr.common.compare_op.x;
Op op_y = instr.common.compare_op.y; Op op_y = instr.common.compare_op.y;
@ -627,7 +652,7 @@ void JitCompiler::Compile_CMP(Instruction instr) {
SHR(64, R(COND1), Imm8(63)); SHR(64, R(COND1), Imm8(63));
} }
void JitCompiler::Compile_MAD(Instruction instr) { void JitShader::Compile_MAD(Instruction instr) {
Compile_SwizzleSrc(instr, 1, instr.mad.src1, SRC1); Compile_SwizzleSrc(instr, 1, instr.mad.src1, SRC1);
if (instr.opcode.Value().EffectiveOpCode() == OpCode::Id::MADI) { if (instr.opcode.Value().EffectiveOpCode() == OpCode::Id::MADI) {
@ -644,9 +669,8 @@ void JitCompiler::Compile_MAD(Instruction instr) {
Compile_DestEnable(instr, SRC1); Compile_DestEnable(instr, SRC1);
} }
void JitCompiler::Compile_IF(Instruction instr) { void JitShader::Compile_IF(Instruction instr) {
ASSERT_MSG(instr.flow_control.dest_offset > *offset_ptr, "Backwards if-statements (%d -> %d) not supported", Compile_Assert(instr.flow_control.dest_offset >= program_counter, "Backwards if-statements not supported");
*offset_ptr, instr.flow_control.dest_offset.Value());
// Evaluate the "IF" condition // Evaluate the "IF" condition
if (instr.opcode.Value() == OpCode::Id::IFU) { if (instr.opcode.Value() == OpCode::Id::IFU) {
@ -676,10 +700,9 @@ void JitCompiler::Compile_IF(Instruction instr) {
SetJumpTarget(b2); SetJumpTarget(b2);
} }
void JitCompiler::Compile_LOOP(Instruction instr) { void JitShader::Compile_LOOP(Instruction instr) {
ASSERT_MSG(instr.flow_control.dest_offset > *offset_ptr, "Backwards loops (%d -> %d) not supported", Compile_Assert(instr.flow_control.dest_offset >= program_counter, "Backwards loops not supported");
*offset_ptr, instr.flow_control.dest_offset.Value()); Compile_Assert(!looping, "Nested loops not supported");
ASSERT_MSG(!looping, "Nested loops not supported");
looping = true; looping = true;
@ -705,10 +728,7 @@ void JitCompiler::Compile_LOOP(Instruction instr) {
looping = false; looping = false;
} }
void JitCompiler::Compile_JMP(Instruction instr) { void JitShader::Compile_JMP(Instruction instr) {
ASSERT_MSG(instr.flow_control.dest_offset > *offset_ptr, "Backwards jumps (%d -> %d) not supported",
*offset_ptr, instr.flow_control.dest_offset.Value());
if (instr.opcode.Value() == OpCode::Id::JMPC) if (instr.opcode.Value() == OpCode::Id::JMPC)
Compile_EvaluateCondition(instr); Compile_EvaluateCondition(instr);
else if (instr.opcode.Value() == OpCode::Id::JMPU) else if (instr.opcode.Value() == OpCode::Id::JMPU)
@ -718,30 +738,38 @@ void JitCompiler::Compile_JMP(Instruction instr) {
bool inverted_condition = (instr.opcode.Value() == OpCode::Id::JMPU) && bool inverted_condition = (instr.opcode.Value() == OpCode::Id::JMPU) &&
(instr.flow_control.num_instructions & 1); (instr.flow_control.num_instructions & 1);
FixupBranch b = J_CC(inverted_condition ? CC_Z : CC_NZ, true); FixupBranch b = J_CC(inverted_condition ? CC_Z : CC_NZ, true);
fixup_branches.push_back({ b, instr.flow_control.dest_offset });
}
Compile_Block(instr.flow_control.dest_offset); void JitShader::Compile_Block(unsigned end) {
while (program_counter < end) {
Compile_NextInstr();
}
}
void JitShader::Compile_Return() {
// Peek return offset on the stack and check if we're at that offset
MOV(64, R(RAX), MDisp(RSP, 8));
CMP(32, R(RAX), Imm32(program_counter));
// If so, jump back to before CALL
FixupBranch b = J_CC(CC_NZ, true);
RET();
SetJumpTarget(b); SetJumpTarget(b);
} }
void JitCompiler::Compile_Block(unsigned end) { void JitShader::Compile_NextInstr() {
// Save current offset pointer if (std::binary_search(return_offsets.begin(), return_offsets.end(), program_counter)) {
unsigned* prev_offset_ptr = offset_ptr; Compile_Return();
unsigned offset = *prev_offset_ptr;
while (offset < end)
Compile_NextInstr(&offset);
// Restore current offset pointer
offset_ptr = prev_offset_ptr;
*offset_ptr = offset;
} }
void JitCompiler::Compile_NextInstr(unsigned* offset) { ASSERT_MSG(code_ptr[program_counter] == nullptr, "Tried to compile already compiled shader location!");
offset_ptr = offset; code_ptr[program_counter] = GetCodePtr();
Instruction instr = GetVertexShaderInstruction(program_counter++);
Instruction instr = *(Instruction*)&g_state.vs.program_code[(*offset_ptr)++];
OpCode::Id opcode = instr.opcode.Value(); OpCode::Id opcode = instr.opcode.Value();
auto instr_func = instr_table[static_cast<unsigned>(opcode)]; auto instr_func = instr_table[static_cast<unsigned>(opcode)];
@ -755,9 +783,35 @@ void JitCompiler::Compile_NextInstr(unsigned* offset) {
} }
} }
CompiledShader* JitCompiler::Compile() { void JitShader::FindReturnOffsets() {
const u8* start = GetCodePtr(); return_offsets.clear();
unsigned offset = g_state.regs.vs.main_offset;
for (size_t offset = 0; offset < g_state.vs.program_code.size(); ++offset) {
Instruction instr = GetVertexShaderInstruction(offset);
switch (instr.opcode.Value()) {
case OpCode::Id::CALL:
case OpCode::Id::CALLC:
case OpCode::Id::CALLU:
return_offsets.push_back(instr.flow_control.dest_offset + instr.flow_control.num_instructions);
break;
}
}
// Sort for efficient binary search later
std::sort(return_offsets.begin(), return_offsets.end());
}
void JitShader::Compile() {
// Reset flow control state
program = (CompiledShader*)GetCodePtr();
program_counter = 0;
looping = false;
code_ptr.fill(nullptr);
fixup_branches.clear();
// Find all `CALL` instructions and identify return locations
FindReturnOffsets();
// The stack pointer is 8 modulo 16 at the entry of a procedure // The stack pointer is 8 modulo 16 at the entry of a procedure
ABI_PushRegistersAndAdjustStack(ABI_ALL_CALLEE_SAVED, 8); ABI_PushRegistersAndAdjustStack(ABI_ALL_CALLEE_SAVED, 8);
@ -780,21 +834,31 @@ CompiledShader* JitCompiler::Compile() {
MOV(PTRBITS, R(RAX), ImmPtr(&neg)); MOV(PTRBITS, R(RAX), ImmPtr(&neg));
MOVAPS(NEGBIT, MatR(RAX)); MOVAPS(NEGBIT, MatR(RAX));
looping = false; // Jump to start of the shader program
JMPptr(R(ABI_PARAM2));
while (offset < g_state.vs.program_code.size()) { // Compile entire program
Compile_NextInstr(&offset); Compile_Block(static_cast<unsigned>(g_state.vs.program_code.size()));
// Set the target for any incomplete branches now that the entire shader program has been emitted
for (const auto& branch : fixup_branches) {
SetJumpTarget(branch.first, code_ptr[branch.second]);
} }
return (CompiledShader*)start; // Free memory that's no longer needed
return_offsets.clear();
return_offsets.shrink_to_fit();
fixup_branches.clear();
fixup_branches.shrink_to_fit();
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!");
LOG_DEBUG(HW_GPU, "Compiled shader size=%d", size);
} }
JitCompiler::JitCompiler() { JitShader::JitShader() {
AllocCodeSpace(jit_cache_size); AllocCodeSpace(MAX_SHADER_SIZE);
}
void JitCompiler::Clear() {
ClearCodeSpace();
} }
} // namespace Shader } // namespace Shader

58
src/video_core/shader/shader_jit_x64.h
View File

@ -4,6 +4,9 @@
#pragma once #pragma once
#include <utility>
#include <vector>
#include <nihstro/shader_bytecode.h> #include <nihstro/shader_bytecode.h>
#include "common/x64/emitter.h" #include "common/x64/emitter.h"
@ -19,24 +22,22 @@ namespace Pica {
namespace Shader { namespace Shader {
/// Memory needed to be available to compile the next shader (otherwise, clear the cache) /// Memory allocated for each compiled shader (64Kb)
constexpr size_t jit_shader_size = 1024 * 512; constexpr size_t MAX_SHADER_SIZE = 1024 * 64;
/// Memory allocated for the JIT code space cache
constexpr size_t jit_cache_size = 1024 * 1024 * 8;
using CompiledShader = void(void* registers);
/** /**
* This class implements the shader JIT compiler. It recompiles a Pica shader program into x86_64 * This class implements the shader JIT compiler. It recompiles a Pica shader program into x86_64
* code that can be executed on the host machine directly. * code that can be executed on the host machine directly.
*/ */
class JitCompiler : public Gen::XCodeBlock { class JitShader : public Gen::XCodeBlock {
public: public:
JitCompiler(); JitShader();
CompiledShader* Compile(); void Run(void* registers, unsigned offset) const {
program(registers, code_ptr[offset]);
}
void Clear(); void Compile();
void Compile_ADD(Instruction instr); void Compile_ADD(Instruction instr);
void Compile_DP3(Instruction instr); void Compile_DP3(Instruction instr);
@ -66,8 +67,9 @@ public:
void Compile_MAD(Instruction instr); void Compile_MAD(Instruction instr);
private: private:
void Compile_Block(unsigned end); void Compile_Block(unsigned end);
void Compile_NextInstr(unsigned* offset); void Compile_NextInstr();
void Compile_SwizzleSrc(Instruction instr, unsigned src_num, SourceRegister src_reg, Gen::X64Reg dest); void Compile_SwizzleSrc(Instruction instr, unsigned src_num, SourceRegister src_reg, Gen::X64Reg dest);
void Compile_DestEnable(Instruction instr, Gen::X64Reg dest); void Compile_DestEnable(Instruction instr, Gen::X64Reg dest);
@ -81,13 +83,39 @@ private:
void Compile_EvaluateCondition(Instruction instr); void Compile_EvaluateCondition(Instruction instr);
void Compile_UniformCondition(Instruction instr); void Compile_UniformCondition(Instruction instr);
/**
* Emits the code to conditionally return from a subroutine envoked by the `CALL` instruction.
*/
void Compile_Return();
BitSet32 PersistentCallerSavedRegs(); BitSet32 PersistentCallerSavedRegs();
/// Pointer to the variable that stores the current Pica code offset. Used to handle nested code blocks. /**
unsigned* offset_ptr = nullptr; * Assertion evaluated at compile-time, but only triggered if executed at runtime.
* @param msg Message to be logged if the assertion fails.
*/
void Compile_Assert(bool condition, const char* msg);
/// Set to true if currently in a loop, used to check for the existence of nested loops /**
bool looping = false; * Analyzes the entire shader program for `CALL` instructions before emitting any code,
* identifying the locations where a return needs to be inserted.
*/
void FindReturnOffsets();
/// Mapping of Pica VS instructions to pointers in the emitted code
std::array<const u8*, 1024> code_ptr;
/// Offsets in code where a return needs to be inserted
std::vector<unsigned> return_offsets;
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;
using CompiledShader = void(void* registers, const u8* start_addr);
CompiledShader* program = nullptr;
}; };
} // Shader } // Shader