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-rw-r--r--src/common/x64/emitter.cpp28
-rw-r--r--src/common/x64/emitter.h2
-rw-r--r--src/video_core/command_processor.cpp4
-rw-r--r--src/video_core/shader/shader.cpp34
-rw-r--r--src/video_core/shader/shader.h3
-rw-r--r--src/video_core/shader/shader_jit_x64.cpp302
-rw-r--r--src/video_core/shader/shader_jit_x64.h58
7 files changed, 270 insertions, 161 deletions
diff --git a/src/common/x64/emitter.cpp b/src/common/x64/emitter.cpp
index 1dcf2416c..5662f7f86 100644
--- a/src/common/x64/emitter.cpp
+++ b/src/common/x64/emitter.cpp
@@ -455,6 +455,18 @@ void XEmitter::CALL(const void* fnptr)
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 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
//There is no PUSHAD/POPAD in 64-bit mode.
void XEmitter::INT3() {Write8(0xCC);}
diff --git a/src/common/x64/emitter.h b/src/common/x64/emitter.h
index 7c6548fb5..a33724146 100644
--- a/src/common/x64/emitter.h
+++ b/src/common/x64/emitter.h
@@ -425,12 +425,14 @@ public:
#undef CALL
#endif
void CALL(const void* fnptr);
+ FixupBranch CALL();
void CALLptr(OpArg arg);
FixupBranch J_CC(CCFlags conditionCode, bool force5bytes = false);
void J_CC(CCFlags conditionCode, const u8* addr, bool force5Bytes = false);
void SetJumpTarget(const FixupBranch& branch);
+ void SetJumpTarget(const FixupBranch& branch, const u8* target);
void SETcc(CCFlags flag, OpArg dest);
// Note: CMOV brings small if any benefit on current cpus.
diff --git a/src/video_core/command_processor.cpp b/src/video_core/command_processor.cpp
index 08ec2907a..3abe79c09 100644
--- a/src/video_core/command_processor.cpp
+++ b/src/video_core/command_processor.cpp
@@ -140,7 +140,7 @@ static void WritePicaReg(u32 id, u32 value, u32 mask) {
immediate_attribute_id = 0;
Shader::UnitState<false> shader_unit;
- Shader::Setup(shader_unit);
+ Shader::Setup();
if (g_debug_context)
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);
Shader::UnitState<false> shader_unit;
- Shader::Setup(shader_unit);
+ Shader::Setup();
for (unsigned int index = 0; index < regs.num_vertices; ++index)
{
diff --git a/src/video_core/shader/shader.cpp b/src/video_core/shader/shader.cpp
index 78d295c76..75301accd 100644
--- a/src/video_core/shader/shader.cpp
+++ b/src/video_core/shader/shader.cpp
@@ -28,36 +28,24 @@ 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<JitShader>> shader_map;
+static const JitShader* jit_shader;
#endif // ARCHITECTURE_x86_64
-void Setup(UnitState<false>& state) {
+void Setup() {
#ifdef ARCHITECTURE_x86_64
if (VideoCore::g_shader_jit_enabled) {
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)) ^
- g_state.regs.vs.main_offset);
+ Common::ComputeHash64(&g_state.vs.swizzle_data, sizeof(g_state.vs.swizzle_data)));
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<JitShader>();
+ shader->Compile();
+ jit_shader = shader.get();
+ shader_map[cache_key] = std::move(shader);
}
}
#endif // ARCHITECTURE_x86_64
@@ -65,7 +53,7 @@ void Setup(UnitState<false>& state) {
void Shutdown() {
#ifdef ARCHITECTURE_x86_64
- ClearCache();
+ shader_map.clear();
#endif // ARCHITECTURE_x86_64
}
@@ -109,7 +97,7 @@ 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, g_state.regs.vs.main_offset);
else
RunInterpreter(state);
#else
diff --git a/src/video_core/shader/shader.h b/src/video_core/shader/shader.h
index 7af8f1fa1..9c5bd97bd 100644
--- a/src/video_core/shader/shader.h
+++ b/src/video_core/shader/shader.h
@@ -339,9 +339,8 @@ struct UnitState {
/**
* 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).
- * @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
void Shutdown();
diff --git a/src/video_core/shader/shader_jit_x64.cpp b/src/video_core/shader/shader_jit_x64.cpp
index dffe051ef..b47d3beda 100644
--- a/src/video_core/shader/shader_jit_x64.cpp
+++ b/src/video_core/shader/shader_jit_x64.cpp
@@ -2,6 +2,7 @@
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
+#include <algorithm>
#include <smmintrin.h>
#include "common/x64/abi.h"
@@ -19,73 +20,73 @@ namespace Shader {
using namespace Gen;
-typedef void (JitCompiler::*JitFunction)(Instruction instr);
+typedef void (JitShader::*JitFunction)(Instruction instr);
const JitFunction instr_table[64] = {
- &JitCompiler::Compile_ADD, // add
- &JitCompiler::Compile_DP3, // dp3
- &JitCompiler::Compile_DP4, // dp4
- &JitCompiler::Compile_DPH, // dph
+ &JitShader::Compile_ADD, // add
+ &JitShader::Compile_DP3, // dp3
+ &JitShader::Compile_DP4, // dp4
+ &JitShader::Compile_DPH, // dph
nullptr, // unknown
- &JitCompiler::Compile_EX2, // ex2
- &JitCompiler::Compile_LG2, // lg2
+ &JitShader::Compile_EX2, // ex2
+ &JitShader::Compile_LG2, // lg2
nullptr, // unknown
- &JitCompiler::Compile_MUL, // mul
- &JitCompiler::Compile_SGE, // sge
- &JitCompiler::Compile_SLT, // slt
- &JitCompiler::Compile_FLR, // flr
- &JitCompiler::Compile_MAX, // max
- &JitCompiler::Compile_MIN, // min
- &JitCompiler::Compile_RCP, // rcp
- &JitCompiler::Compile_RSQ, // rsq
+ &JitShader::Compile_MUL, // mul
+ &JitShader::Compile_SGE, // sge
+ &JitShader::Compile_SLT, // slt
+ &JitShader::Compile_FLR, // flr
+ &JitShader::Compile_MAX, // max
+ &JitShader::Compile_MIN, // min
+ &JitShader::Compile_RCP, // rcp
+ &JitShader::Compile_RSQ, // rsq
nullptr, // unknown
nullptr, // unknown
- &JitCompiler::Compile_MOVA, // mova
- &JitCompiler::Compile_MOV, // mov
+ &JitShader::Compile_MOVA, // mova
+ &JitShader::Compile_MOV, // mov
nullptr, // unknown
nullptr, // unknown
nullptr, // unknown
nullptr, // unknown
- &JitCompiler::Compile_DPH, // dphi
+ &JitShader::Compile_DPH, // dphi
nullptr, // unknown
- &JitCompiler::Compile_SGE, // sgei
- &JitCompiler::Compile_SLT, // slti
+ &JitShader::Compile_SGE, // sgei
+ &JitShader::Compile_SLT, // slti
nullptr, // unknown
nullptr, // unknown
nullptr, // unknown
nullptr, // unknown
nullptr, // unknown
- &JitCompiler::Compile_NOP, // nop
- &JitCompiler::Compile_END, // end
+ &JitShader::Compile_NOP, // nop
+ &JitShader::Compile_END, // end
nullptr, // break
- &JitCompiler::Compile_CALL, // call
- &JitCompiler::Compile_CALLC, // callc
- &JitCompiler::Compile_CALLU, // callu
- &JitCompiler::Compile_IF, // ifu
- &JitCompiler::Compile_IF, // ifc
- &JitCompiler::Compile_LOOP, // loop
+ &JitShader::Compile_CALL, // call
+ &JitShader::Compile_CALLC, // callc
+ &JitShader::Compile_CALLU, // callu
+ &JitShader::Compile_IF, // ifu
+ &JitShader::Compile_IF, // ifc
+ &JitShader::Compile_LOOP, // loop
nullptr, // emit
nullptr, // sete
- &JitCompiler::Compile_JMP, // jmpc
- &JitCompiler::Compile_JMP, // jmpu
- &JitCompiler::Compile_CMP, // cmp
- &JitCompiler::Compile_CMP, // cmp
- &JitCompiler::Compile_MAD, // madi
- &JitCompiler::Compile_MAD, // madi
- &JitCompiler::Compile_MAD, // madi
- &JitCompiler::Compile_MAD, // madi
- &JitCompiler::Compile_MAD, // madi
- &JitCompiler::Compile_MAD, // madi
- &JitCompiler::Compile_MAD, // madi
- &JitCompiler::Compile_MAD, // madi
- &JitCompiler::Compile_MAD, // mad
- &JitCompiler::Compile_MAD, // mad
- &JitCompiler::Compile_MAD, // mad
- &JitCompiler::Compile_MAD, // mad
- &JitCompiler::Compile_MAD, // mad
- &JitCompiler::Compile_MAD, // mad
- &JitCompiler::Compile_MAD, // mad
- &JitCompiler::Compile_MAD, // mad
+ &JitShader::Compile_JMP, // jmpc
+ &JitShader::Compile_JMP, // jmpu
+ &JitShader::Compile_CMP, // cmp
+ &JitShader::Compile_CMP, // cmp
+ &JitShader::Compile_MAD, // madi
+ &JitShader::Compile_MAD, // madi
+ &JitShader::Compile_MAD, // madi
+ &JitShader::Compile_MAD, // madi
+ &JitShader::Compile_MAD, // madi
+ &JitShader::Compile_MAD, // madi
+ &JitShader::Compile_MAD, // madi
+ &JitShader::Compile_MAD, // madi
+ &JitShader::Compile_MAD, // mad
+ &JitShader::Compile_MAD, // mad
+ &JitShader::Compile_MAD, // mad
+ &JitShader::Compile_MAD, // mad
+ &JitShader::Compile_MAD, // mad
+ &JitShader::Compile_MAD, // mad
+ &JitShader::Compile_MAD, // mad
+ &JitShader::Compile_MAD, // mad
};
// The following is used to alias some commonly used registers. Generally, RAX-RDX and XMM0-XMM3 can
@@ -138,13 +139,32 @@ static const u8 NO_SRC_REG_SWIZZLE = 0x1b;
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.
* @param instr VS instruction, used for determining how to load the source register
* @param src_num Number indicating which source register to load (1 = src1, 2 = src2, 3 = src3)
* @param src_reg SourceRegister object corresponding to the source register to load
* @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;
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;
unsigned operand_desc_id;
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));
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));
}
-void JitCompiler::Compile_EvaluateCondition(Instruction instr) {
+void JitShader::Compile_EvaluateCondition(Instruction instr) {
// Note: NXOR is used below to check for equality
switch (instr.flow_control.op) {
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));
CMP(sizeof(bool) * 8, MDisp(UNIFORMS, offset), Imm8(0));
}
-BitSet32 JitCompiler::PersistentCallerSavedRegs() {
+BitSet32 JitShader::PersistentCallerSavedRegs() {
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, 2, instr.common.src2, SRC2);
ADDPS(SRC1, R(SRC2));
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, 2, instr.common.src2, SRC2);
@@ -342,7 +362,7 @@ void JitCompiler::Compile_DP3(Instruction instr) {
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, 2, instr.common.src2, SRC2);
@@ -359,7 +379,7 @@ void JitCompiler::Compile_DP4(Instruction instr) {
Compile_DestEnable(instr, SRC1);
}
-void JitCompiler::Compile_DPH(Instruction instr) {
+void JitShader::Compile_DPH(Instruction instr) {
if (instr.opcode.Value().EffectiveOpCode() == OpCode::Id::DPHI) {
Compile_SwizzleSrc(instr, 1, instr.common.src1i, SRC1);
Compile_SwizzleSrc(instr, 2, instr.common.src2i, SRC2);
@@ -391,7 +411,7 @@ void JitCompiler::Compile_DPH(Instruction instr) {
Compile_DestEnable(instr, SRC1);
}
-void JitCompiler::Compile_EX2(Instruction instr) {
+void JitShader::Compile_EX2(Instruction instr) {
Compile_SwizzleSrc(instr, 1, instr.common.src1, SRC1);
MOVSS(XMM0, R(SRC1));
@@ -404,7 +424,7 @@ void JitCompiler::Compile_EX2(Instruction instr) {
Compile_DestEnable(instr, SRC1);
}
-void JitCompiler::Compile_LG2(Instruction instr) {
+void JitShader::Compile_LG2(Instruction instr) {
Compile_SwizzleSrc(instr, 1, instr.common.src1, SRC1);
MOVSS(XMM0, R(SRC1));
@@ -417,14 +437,14 @@ void JitCompiler::Compile_LG2(Instruction instr) {
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, 2, instr.common.src2, SRC2);
Compile_SanitizedMul(SRC1, SRC2, SCRATCH);
Compile_DestEnable(instr, SRC1);
}
-void JitCompiler::Compile_SGE(Instruction instr) {
+void JitShader::Compile_SGE(Instruction instr) {
if (instr.opcode.Value().EffectiveOpCode() == OpCode::Id::SGEI) {
Compile_SwizzleSrc(instr, 1, instr.common.src1i, SRC1);
Compile_SwizzleSrc(instr, 2, instr.common.src2i, SRC2);
@@ -439,7 +459,7 @@ void JitCompiler::Compile_SGE(Instruction instr) {
Compile_DestEnable(instr, SRC2);
}
-void JitCompiler::Compile_SLT(Instruction instr) {
+void JitShader::Compile_SLT(Instruction instr) {
if (instr.opcode.Value().EffectiveOpCode() == OpCode::Id::SLTI) {
Compile_SwizzleSrc(instr, 1, instr.common.src1i, SRC1);
Compile_SwizzleSrc(instr, 2, instr.common.src2i, SRC2);
@@ -454,7 +474,7 @@ void JitCompiler::Compile_SLT(Instruction instr) {
Compile_DestEnable(instr, SRC1);
}
-void JitCompiler::Compile_FLR(Instruction instr) {
+void JitShader::Compile_FLR(Instruction instr) {
Compile_SwizzleSrc(instr, 1, instr.common.src1, SRC1);
if (Common::GetCPUCaps().sse4_1) {
@@ -467,7 +487,7 @@ void JitCompiler::Compile_FLR(Instruction instr) {
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, 2, instr.common.src2, SRC2);
// 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);
}
-void JitCompiler::Compile_MIN(Instruction instr) {
+void JitShader::Compile_MIN(Instruction instr) {
Compile_SwizzleSrc(instr, 1, instr.common.src1, SRC1);
Compile_SwizzleSrc(instr, 2, instr.common.src2, SRC2);
// 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);
}
-void JitCompiler::Compile_MOVA(Instruction instr) {
+void JitShader::Compile_MOVA(Instruction instr) {
SwizzlePattern swiz = { g_state.vs.swizzle_data[instr.common.operand_desc_id] };
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_DestEnable(instr, SRC1);
}
-void JitCompiler::Compile_RCP(Instruction instr) {
+void JitShader::Compile_RCP(Instruction instr) {
Compile_SwizzleSrc(instr, 1, instr.common.src1, SRC1);
// 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);
}
-void JitCompiler::Compile_RSQ(Instruction instr) {
+void JitShader::Compile_RSQ(Instruction instr) {
Compile_SwizzleSrc(instr, 1, instr.common.src1, SRC1);
// 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);
}
-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);
RET();
}
-void JitCompiler::Compile_CALL(Instruction instr) {
- unsigned offset = instr.flow_control.dest_offset;
- while (offset < (instr.flow_control.dest_offset + instr.flow_control.num_instructions)) {
- Compile_NextInstr(&offset);
- }
+void JitShader::Compile_CALL(Instruction instr) {
+ // Push offset of the return
+ PUSH(64, Imm32(instr.flow_control.dest_offset + instr.flow_control.num_instructions));
+
+ // 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);
FixupBranch b = J_CC(CC_Z, true);
Compile_CALL(instr);
SetJumpTarget(b);
}
-void JitCompiler::Compile_CALLU(Instruction instr) {
+void JitShader::Compile_CALLU(Instruction instr) {
Compile_UniformCondition(instr);
FixupBranch b = J_CC(CC_Z, true);
Compile_CALL(instr);
SetJumpTarget(b);
}
-void JitCompiler::Compile_CMP(Instruction instr) {
+void JitShader::Compile_CMP(Instruction instr) {
using Op = Instruction::Common::CompareOpType::Op;
Op op_x = instr.common.compare_op.x;
Op op_y = instr.common.compare_op.y;
@@ -627,7 +652,7 @@ void JitCompiler::Compile_CMP(Instruction instr) {
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);
if (instr.opcode.Value().EffectiveOpCode() == OpCode::Id::MADI) {
@@ -644,9 +669,8 @@ void JitCompiler::Compile_MAD(Instruction instr) {
Compile_DestEnable(instr, SRC1);
}
-void JitCompiler::Compile_IF(Instruction instr) {
- ASSERT_MSG(instr.flow_control.dest_offset > *offset_ptr, "Backwards if-statements (%d -> %d) not supported",
- *offset_ptr, instr.flow_control.dest_offset.Value());
+void JitShader::Compile_IF(Instruction instr) {
+ Compile_Assert(instr.flow_control.dest_offset >= program_counter, "Backwards if-statements not supported");
// Evaluate the "IF" condition
if (instr.opcode.Value() == OpCode::Id::IFU) {
@@ -676,10 +700,9 @@ void JitCompiler::Compile_IF(Instruction instr) {
SetJumpTarget(b2);
}
-void JitCompiler::Compile_LOOP(Instruction instr) {
- ASSERT_MSG(instr.flow_control.dest_offset > *offset_ptr, "Backwards loops (%d -> %d) not supported",
- *offset_ptr, instr.flow_control.dest_offset.Value());
- ASSERT_MSG(!looping, "Nested loops not supported");
+void JitShader::Compile_LOOP(Instruction instr) {
+ Compile_Assert(instr.flow_control.dest_offset >= program_counter, "Backwards loops not supported");
+ Compile_Assert(!looping, "Nested loops not supported");
looping = true;
@@ -705,10 +728,7 @@ void JitCompiler::Compile_LOOP(Instruction instr) {
looping = false;
}
-void JitCompiler::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());
-
+void JitShader::Compile_JMP(Instruction instr) {
if (instr.opcode.Value() == OpCode::Id::JMPC)
Compile_EvaluateCondition(instr);
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) &&
(instr.flow_control.num_instructions & 1);
+
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);
}
-void JitCompiler::Compile_Block(unsigned end) {
- // Save current offset pointer
- unsigned* prev_offset_ptr = offset_ptr;
- unsigned offset = *prev_offset_ptr;
+void JitShader::Compile_NextInstr() {
+ if (std::binary_search(return_offsets.begin(), return_offsets.end(), program_counter)) {
+ Compile_Return();
+ }
- while (offset < end)
- Compile_NextInstr(&offset);
+ ASSERT_MSG(code_ptr[program_counter] == nullptr, "Tried to compile already compiled shader location!");
+ code_ptr[program_counter] = GetCodePtr();
- // Restore current offset pointer
- offset_ptr = prev_offset_ptr;
- *offset_ptr = offset;
-}
+ Instruction instr = GetVertexShaderInstruction(program_counter++);
-void JitCompiler::Compile_NextInstr(unsigned* offset) {
- offset_ptr = offset;
-
- Instruction instr = *(Instruction*)&g_state.vs.program_code[(*offset_ptr)++];
OpCode::Id opcode = instr.opcode.Value();
auto instr_func = instr_table[static_cast<unsigned>(opcode)];
@@ -755,9 +783,35 @@ void JitCompiler::Compile_NextInstr(unsigned* offset) {
}
}
-CompiledShader* JitCompiler::Compile() {
- const u8* start = GetCodePtr();
- unsigned offset = g_state.regs.vs.main_offset;
+void JitShader::FindReturnOffsets() {
+ return_offsets.clear();
+
+ 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
ABI_PushRegistersAndAdjustStack(ABI_ALL_CALLEE_SAVED, 8);
@@ -780,21 +834,31 @@ CompiledShader* JitCompiler::Compile() {
MOV(PTRBITS, R(RAX), ImmPtr(&neg));
MOVAPS(NEGBIT, MatR(RAX));
- looping = false;
+ // Jump to start of the shader program
+ JMPptr(R(ABI_PARAM2));
+
+ // Compile entire program
+ Compile_Block(static_cast<unsigned>(g_state.vs.program_code.size()));
- while (offset < g_state.vs.program_code.size()) {
- Compile_NextInstr(&offset);
+ // 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!");
-JitCompiler::JitCompiler() {
- AllocCodeSpace(jit_cache_size);
+ LOG_DEBUG(HW_GPU, "Compiled shader size=%d", size);
}
-void JitCompiler::Clear() {
- ClearCodeSpace();
+JitShader::JitShader() {
+ 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 5357c964b..cd6280ade 100644
--- a/src/video_core/shader/shader_jit_x64.h
+++ b/src/video_core/shader/shader_jit_x64.h
@@ -4,6 +4,9 @@
#pragma once
+#include <utility>
+#include <vector>
+
#include <nihstro/shader_bytecode.h>
#include "common/x64/emitter.h"
@@ -19,24 +22,22 @@ 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;
-
-using CompiledShader = void(void* registers);
+/// Memory allocated for each compiled shader (64Kb)
+constexpr size_t MAX_SHADER_SIZE = 1024 * 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.
*/
-class JitCompiler : public Gen::XCodeBlock {
+class JitShader : public Gen::XCodeBlock {
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_DP3(Instruction instr);
@@ -66,8 +67,9 @@ public:
void Compile_MAD(Instruction instr);
private:
+
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_DestEnable(Instruction instr, Gen::X64Reg dest);
@@ -81,13 +83,39 @@ private:
void Compile_EvaluateCondition(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();
- /// 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);
+
+ /**
+ * 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;
- /// Set to true if currently in a loop, used to check for the existence of nested loops
- bool looping = false;
+ using CompiledShader = void(void* registers, const u8* start_addr);
+ CompiledShader* program = nullptr;
};
} // Shader
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-22 17:37:38 +0100