More fixes for persective correct build

- Switch back to fixed point GTE
- Only clamp w to h/2 after divide
- Fix vertex function for multi-pass (was overwriting vertexon first pass)

1 files changed, 27 insertions, 4 deletions

diff --git a/libpcsxcore/pgxp_gte.c b/libpcsxcore/pgxp_gte.c
index 3ee5db22..3844e6be 100644
--- a/libpcsxcore/pgxp_gte.c
+++ b/libpcsxcore/pgxp_gte.c
@@ -306,19 +306,42 @@ 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 IR1 = max(min(MAC1, 0x7fff), -0x8000);

+	float IR2 = max(min(MAC2, 0x7fff), -0x8000);

+	float IR3 = max(min(MAC3, 0x7fff), -0x8000);

+

 	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 SZ3 = max(min(MAC3, 0xffff), 0x0000);			// 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 h_over_w = min(H / SZ3, (float)0x1ffff / (float)0xffff);

+	h_over_w = (SZ3 == 0) ? ((float)0x1ffff / (float)0xffff) : h_over_w;

+

 	// PSX Screen space X,Y,W components

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

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

-	float sw = SZ3;

+	float sx = OFX + (IR1 * h_over_w) * (Config.Widescreen ? 0.75 : 1);

+	float sy = OFY + (IR2 * h_over_w);

+	float sw = SZ3;// max(SZ3, 0.1);

+

+	sx = max(min(sx, 1024.f), -1024.f);

+	sy = max(min(sy, 1024.f), -1024.f);

+

+	//float sx2 = SX2;

+	//float sy2 = SY2;

+	//float sz2 = SXY2.z;

+

+	//float ftolerance = 5.f;

+

+	//if ((fabs(sx - sx2) > ftolerance) ||

+	//	(fabs(sy - sy2) > ftolerance) ||

+	//	(fabs(sw - sz2) > ftolerance))

+	//{

+	//	float r = 5;

+	//}

 

 	PGXP_pushSXYZ2f(sx , sy , sw, _v);