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rsx: Fix some fp bugs

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rsx/fp: Properly fix RCP
- Input is always scalar, output is a vector

rsx/fp: Ignore forced unit for SIP and TEX instructions
This commit is contained in:
kd-11 2017-06-30 13:59:02 +03:00
parent c788331e45
commit d43e06c0ea
1 changed files with 6 additions and 3 deletions
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9
rpcs3/Emu/RSX/Common/FragmentProgramDecompiler.cpp
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@ -449,7 +449,7 @@ bool FragmentProgramDecompiler::handle_sct(u32 opcode)
case RSX_FP_OPCODE_MOV: SetDst("$0"); return true; case RSX_FP_OPCODE_MOV: SetDst("$0"); return true;
case RSX_FP_OPCODE_MUL: SetDst("($0 * $1)"); return true; case RSX_FP_OPCODE_MUL: SetDst("($0 * $1)"); return true;
// Note: It's higly likely that RCP is not IEEE compliant but a game that uses rcp(0) has to be found // Note: It's higly likely that RCP is not IEEE compliant but a game that uses rcp(0) has to be found
case RSX_FP_OPCODE_RCP: SetDst("(1. / " + NotZero("$0") + ")"); return true; case RSX_FP_OPCODE_RCP: SetDst("(1. / " + NotZero("$0.x") + ").xxxx"); return true;
// Note: RSQ is not IEEE compliant. rsq(0) is some big number (Silent Hill 3 HD) // Note: RSQ is not IEEE compliant. rsq(0) is some big number (Silent Hill 3 HD)
// It is not know what happens if 0 is negative. // It is not know what happens if 0 is negative.
case RSX_FP_OPCODE_RSQ: SetDst("(1. / sqrt(" + NotZeroPositive("$0.x") + ").xxxx)"); return true; case RSX_FP_OPCODE_RSQ: SetDst("(1. / sqrt(" + NotZeroPositive("$0.x") + ").xxxx)"); return true;
@ -734,11 +734,14 @@ std::string FragmentProgramDecompiler::Decompile()
default: default:
int prev_force_unit = forced_unit; int prev_force_unit = forced_unit;
//Some instructions do not respect forced unit
//Tested with Tales of Vesperia
if (SIP()) break;
if (handle_tex_srb(opcode)) break;
if (forced_unit == FORCE_NONE) if (forced_unit == FORCE_NONE)
{ {
if (SIP()) break;
if (handle_sct(opcode)) break; if (handle_sct(opcode)) break;
if (handle_tex_srb(opcode)) break;
if (handle_scb(opcode)) break; if (handle_scb(opcode)) break;
} }
else if (forced_unit == FORCE_SCT) else if (forced_unit == FORCE_SCT)