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rsx/fp: Better handling of flow control ops

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This commit is contained in:
kd-11 2017-05-21 22:14:59 +03:00
parent ccb23d70a5
commit 18df292f90
2 changed files with 43 additions and 34 deletions
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75
rpcs3/Emu/RSX/Common/FragmentProgramDecompiler.cpp
View file

@ -80,6 +80,27 @@ void FragmentProgramDecompiler::SetDst(std::string code, bool append_mask)
} }
} }
void FragmentProgramDecompiler::AddFlowOp(std::string code)
{
//Flow operations can only consider conditionals and have no dst
if (src0.exec_if_gr && src0.exec_if_lt && src0.exec_if_eq)
{
AddCode(code + ";");
return;
}
else if (!src0.exec_if_gr && !src0.exec_if_lt && !src0.exec_if_eq)
{
AddCode("//" + code + ";");
return;
}
//We have a conditional expression
std::string cond = GetRawCond();
AddCode("if (any(" + cond + ")) " + code + ";");
}
void FragmentProgramDecompiler::AddCode(const std::string& code) void FragmentProgramDecompiler::AddCode(const std::string& code)
{ {
main.append(m_code_level, '\t') += Format(code) + "\n"; main.append(m_code_level, '\t') += Format(code) + "\n";
@ -228,17 +249,8 @@ std::string FragmentProgramDecompiler::Format(const std::string& code)
return fmt::replace_all(code, repl_list); return fmt::replace_all(code, repl_list);
} }
std::string FragmentProgramDecompiler::GetCond() std::string FragmentProgramDecompiler::GetRawCond()
{ {
if (src0.exec_if_gr && src0.exec_if_lt && src0.exec_if_eq)
{
return "true";
}
else if (!src0.exec_if_gr && !src0.exec_if_lt && !src0.exec_if_eq)
{
return "false";
}
static const char f[4] = { 'x', 'y', 'z', 'w' }; static const char f[4] = { 'x', 'y', 'z', 'w' };
std::string swizzle, cond; std::string swizzle, cond;
@ -261,7 +273,21 @@ std::string FragmentProgramDecompiler::GetCond()
else //if(src0.exec_if_eq) else //if(src0.exec_if_eq)
cond = compareFunction(COMPARE::FUNCTION_SEQ, AddCond() + swizzle, getFloatTypeName(4) + "(0., 0., 0., 0.)"); cond = compareFunction(COMPARE::FUNCTION_SEQ, AddCond() + swizzle, getFloatTypeName(4) + "(0., 0., 0., 0.)");
return "any(" + cond + ")"; return cond;
}
std::string FragmentProgramDecompiler::GetCond()
{
if (src0.exec_if_gr && src0.exec_if_lt && src0.exec_if_eq)
{
return "true";
}
else if (!src0.exec_if_gr && !src0.exec_if_lt && !src0.exec_if_eq)
{
return "false";
}
return "any(" + GetRawCond() + ")";
} }
void FragmentProgramDecompiler::AddCodeCond(const std::string& dst, const std::string& src) void FragmentProgramDecompiler::AddCodeCond(const std::string& dst, const std::string& src)
@ -279,26 +305,7 @@ void FragmentProgramDecompiler::AddCodeCond(const std::string& dst, const std::s
} }
static const char f[4] = { 'x', 'y', 'z', 'w' }; static const char f[4] = { 'x', 'y', 'z', 'w' };
std::string cond = GetRawCond();
std::string swizzle, cond;
swizzle += f[src0.cond_swizzle_x];
swizzle += f[src0.cond_swizzle_y];
swizzle += f[src0.cond_swizzle_z];
swizzle += f[src0.cond_swizzle_w];
swizzle = swizzle == "xyzw" ? "" : "." + swizzle;
if (src0.exec_if_gr && src0.exec_if_eq)
cond = compareFunction(COMPARE::FUNCTION_SGE, AddCond() + swizzle, getFloatTypeName(4) + "(0., 0., 0., 0.)");
else if (src0.exec_if_lt && src0.exec_if_eq)
cond = compareFunction(COMPARE::FUNCTION_SLE, AddCond() + swizzle, getFloatTypeName(4) + "(0., 0., 0., 0.)");
else if (src0.exec_if_gr && src0.exec_if_lt)
cond = compareFunction(COMPARE::FUNCTION_SNE, AddCond() + swizzle, getFloatTypeName(4) + "(0., 0., 0., 0.)");
else if (src0.exec_if_gr)
cond = compareFunction(COMPARE::FUNCTION_SGT, AddCond() + swizzle, getFloatTypeName(4) + "(0., 0., 0., 0.)");
else if (src0.exec_if_lt)
cond = compareFunction(COMPARE::FUNCTION_SLT, AddCond() + swizzle, getFloatTypeName(4) + "(0., 0., 0., 0.)");
else //if(src0.exec_if_eq)
cond = compareFunction(COMPARE::FUNCTION_SEQ, AddCond() + swizzle, getFloatTypeName(4) + "(0., 0., 0., 0.)");
ShaderVariable dst_var(dst); ShaderVariable dst_var(dst);
dst_var.symplify(); dst_var.symplify();
@ -641,7 +648,7 @@ std::string FragmentProgramDecompiler::Decompile()
{ {
switch (opcode) switch (opcode)
{ {
case RSX_FP_OPCODE_BRK: SetDst("break"); break; case RSX_FP_OPCODE_BRK: AddFlowOp("break"); break;
case RSX_FP_OPCODE_CAL: LOG_ERROR(RSX, "Unimplemented SIP instruction: CAL"); break; case RSX_FP_OPCODE_CAL: LOG_ERROR(RSX, "Unimplemented SIP instruction: CAL"); break;
case RSX_FP_OPCODE_FENCT: forced_unit = FORCE_SCT; break; case RSX_FP_OPCODE_FENCT: forced_unit = FORCE_SCT; break;
case RSX_FP_OPCODE_FENCB: forced_unit = FORCE_SCB; break; case RSX_FP_OPCODE_FENCB: forced_unit = FORCE_SCB; break;
@ -685,7 +692,7 @@ std::string FragmentProgramDecompiler::Decompile()
m_code_level++; m_code_level++;
} }
break; break;
case RSX_FP_OPCODE_RET: SetDst("return"); break; case RSX_FP_OPCODE_RET: AddFlowOp("return"); break;
default: default:
return false; return false;
@ -697,7 +704,7 @@ std::string FragmentProgramDecompiler::Decompile()
switch (opcode) switch (opcode)
{ {
case RSX_FP_OPCODE_NOP: break; case RSX_FP_OPCODE_NOP: break;
case RSX_FP_OPCODE_KIL: SetDst("discard", false); break; case RSX_FP_OPCODE_KIL: AddFlowOp("discard"); break;
default: default:
int prev_force_unit = forced_unit; int prev_force_unit = forced_unit;

2
rpcs3/Emu/RSX/Common/FragmentProgramDecompiler.h
View file

@ -44,6 +44,7 @@ class FragmentProgramDecompiler
std::string AddCond(); std::string AddCond();
std::string AddConst(); std::string AddConst();
std::string AddTex(); std::string AddTex();
void AddFlowOp(std::string code);
std::string Format(const std::string& code); std::string Format(const std::string& code);
//Technically a temporary workaround until we know what type3 is //Technically a temporary workaround until we know what type3 is
@ -58,6 +59,7 @@ class FragmentProgramDecompiler
std::string NoOverflow(const std::string& code); std::string NoOverflow(const std::string& code);
void AddCodeCond(const std::string& dst, const std::string& src); void AddCodeCond(const std::string& dst, const std::string& src);
std::string GetRawCond();
std::string GetCond(); std::string GetCond();
template<typename T> std::string GetSRC(T src); template<typename T> std::string GetSRC(T src);
std::string BuildCode(); std::string BuildCode();