Ensure w is reset to 1.f to prevent stale values.

1 files changed, 8 insertions, 7 deletions

diff --git a/libpcsxcore/pgxp_gte.c b/libpcsxcore/pgxp_gte.c
index 5d681d85..3ee5db22 100644
--- a/libpcsxcore/pgxp_gte.c
+++ b/libpcsxcore/pgxp_gte.c
@@ -306,17 +306,18 @@ void PGXP_RTPS(u32 _n, u32 _v)
 	float MAC2 = TRY + (R21 * VX(_n)) + (R22 * VY(_n)) + (R23 * VZ(_n));

 	float MAC3 = TRZ + (R31 * VX(_n)) + (R32 * VY(_n)) + (R33 * VZ(_n));

 

-	float H = psxRegs.CP2C.p[26].sw.l;

-	float SZ3 = max(MAC3, H);

-	float h_over_sz3 = H / SZ3;

+	float H = psxRegs.CP2C.p[26].sw.l;	// Near plane

+	float F = 0xFFFF;					// Far plane?

+	float SZ3 = max(MAC3, H);			// Clamp SZ3 to near plane because we have no clipping (no proper Z)

+	//	float h_over_sz3 = H / SZ3;

 

 	// Offsets with 16-bit shift

-	float OFX = (float)psxRegs.CP2C.p[ 24 ].sd / (float)(1 << 16);

-	float OFY = (float)psxRegs.CP2C.p[ 25 ].sd / (float)(1 << 16);

+	float OFX = (float)psxRegs.CP2C.p[24].sd / (float)(1 << 16);

+	float OFY = (float)psxRegs.CP2C.p[25].sd / (float)(1 << 16);

 

 	// PSX Screen space X,Y,W components

-	float sx = OFX + (MAC1 * h_over_sz3) * (Config.Widescreen ? 0.75 : 1);

-	float sy = OFY + (MAC2 * h_over_sz3);

+	float sx = OFX + (MAC1 * (H / SZ3)) * (Config.Widescreen ? 0.75 : 1);

+	float sy = OFY + (MAC2 * (H / SZ3));

 	float sw = SZ3;

 

 	PGXP_pushSXYZ2f(sx , sy , sw, _v);