raphiaura/KytyPS5
1
0
Fork 0
mirror of https://github.com/KytyPS5/KytyPS5.git synced 2026-10-23 04:16:57 +02:00
Code Issues Packages Projects Releases Wiki Activity

shader: implement V_COS_F16

Browse Source
This commit is contained in:
nmzik
2026-08-29 19:03:33 +04:00
parent 5bd447d2a2
commit 1a87cfedb5
7 changed files with 90 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/graphics/shader/recompiler/frontend/translate/Float.cpp
+24
View File
@@ -63,6 +63,30 @@ bool Translator::Float16Unary(const Decoder::Instruction& inst, IR::ValueOpcode
return true;
}
bool Translator::V_COS_F16(const Decoder::Instruction& inst) {
const auto argument = ReadF16AsF32(inst.src0);
auto result = IR::F32(ir.Emit(IR::ValueOpcode::FPCos, {argument}));
// The architectural quarter-cycle result is exactly zero. Evaluating cos(pi/2) with a
// rounded F32 PI can otherwise produce a half-precision subnormal instead.
const auto fraction = IR::F32(ir.Emit(IR::ValueOpcode::FPFract32, {argument}));
const auto quarter = IR::U1(
ir.Emit(IR::ValueOpcode::FPOrdEqual32, {fraction, IR::Value::F32(0.25f)}));
const auto three_quarters = IR::U1(
ir.Emit(IR::ValueOpcode::FPOrdEqual32, {fraction, IR::Value::F32(0.75f)}));
result = IR::F32(ir.Emit(IR::ValueOpcode::SelectF32,
{ir.LogicalOr(quarter, three_quarters), IR::Value::F32(0.0f), result}));
const auto magnitude =
ir.BitwiseAnd(ir.BitCastU32(argument), IR::U32(IR::Value(0x7fffffffu)));
const auto infinite = ir.IEqual(magnitude, IR::U32(IR::Value(0x7f800000u)));
result = ApplyF32ResultModifiers(inst.dst, result);
const auto bits = PackHalf2x16(result, IR::F32(IR::Value::F32(0.0f)));
const auto invalid = IR::U32(IR::Value(inst.dst.clamp ? 0u : 0xfe00u));
WriteU16(DestinationOperand(inst), ir.Select(infinite, invalid, bits));
return true;
}
bool Translator::Float16Binary(const Decoder::Instruction& inst, IR::ValueOpcode opcode,
bool reverse) {
const auto lhs = ReadF16AsF32(reverse ? inst.src1 : inst.src0);