From 5ba139a4c3cc15420762bb4a75ca36f7c936213b Mon Sep 17 00:00:00 2001
From: "SND\\edgbla_cp" <SND\edgbla_cp@e17a0e51-4ae3-4d35-97c3-1a29b211df97>
Date: Sun, 10 Jul 2011 10:29:30 +0000
Subject: gpu gte acuracy interface.

git-svn-id: https://pcsxr.svn.codeplex.com/svn/pcsxr@68598 e17a0e51-4ae3-4d35-97c3-1a29b211df97
---
 libpcsxcore/gte.c     | 27 +++++++++++++++++++++++++++
 libpcsxcore/plugins.c |  3 +++
 libpcsxcore/plugins.h |  2 ++
 3 files changed, 32 insertions(+)

(limited to 'libpcsxcore')

diff --git a/libpcsxcore/gte.c b/libpcsxcore/gte.c
index 3bc6f11a..be004384 100644
--- a/libpcsxcore/gte.c
+++ b/libpcsxcore/gte.c
@@ -208,11 +208,22 @@ static inline u32 limE(u32 result) {
 	return result;
 }
 
+static inline float flimE(float result) {
+	if (result > 0x1ffff) {
+		gteFLAG |= (1 << 31) | (1 << 17);
+		return 0x1ffff;
+	}
+	return result;
+}
+
 #define F(a) BOUNDS((a), 0x7fffffff, (1 << 31) | (1 << 16), -(s64)0x80000000, (1 << 31) | (1 << 15))
 #define limG1(a) LIM((a), 0x3ff, -0x400, (1 << 31) | (1 << 14))
 #define limG2(a) LIM((a), 0x3ff, -0x400, (1 << 31) | (1 << 13))
 #define limH(a) LIM((a), 0x1000, 0x0000, (1 << 12))
 
+#define limG1_ia(a) LIM((a), 0x3ffffff, -0x4000000, (1 << 31) | (1 << 14))
+#define limG2_ia(a) LIM((a), 0x3ffffff, -0x4000000, (1 << 31) | (1 << 13))
+
 #include "gte_divider.h"
 
 static inline u32 MFC2(int reg) {
@@ -371,6 +382,7 @@ void gteSWC2() {
 
 void gteRTPS() {
 	int quotient;
+    float fquotient;
 
 #ifdef GTE_LOG
 	GTE_LOG("GTE RTPS\n");
@@ -393,12 +405,20 @@ void gteRTPS() {
 	gteSX2 = limG1(F((s64)gteOFX + ((s64)gteIR1 * quotient)) >> 16);
 	gteSY2 = limG2(F((s64)gteOFY + ((s64)gteIR2 * quotient)) >> 16);
 
+    fquotient = flimE((float)(gteH << 16) / (float)gteSZ3);
+    GPU_addVertex(gteSX2,
+                  gteSY2,
+                  limG1_ia((s64)gteOFX + (s64)(gteIR1 * fquotient)), // TODO: MAC1 calc instead of IR1.
+                  limG2_ia((s64)gteOFY + (s64)(gteIR2 * fquotient)), // TODO: MAC2 calc instead of IR2.
+				  ((s64)gteSZ3));                                    // TODO: MAC3 calc instead of SZ3.
+
 	gteMAC0 = F((s64)gteDQB + ((s64)gteDQA * quotient));
 	gteIR0 = limH(gteMAC0 >> 12);
 }
 
 void gteRTPT() {
 	int quotient;
+    float fquotient;
 	int v;
 	s32 vx, vy, vz;
 
@@ -422,6 +442,13 @@ void gteRTPT() {
 		quotient = limE(DIVIDE(gteH, fSZ(v)));
 		fSX(v) = limG1(F((s64)gteOFX + ((s64)gteIR1 * quotient)) >> 16);
 		fSY(v) = limG2(F((s64)gteOFY + ((s64)gteIR2 * quotient)) >> 16);
+
+        fquotient = flimE((float)(gteH << 16) / (float)fSZ(v));
+		GPU_addVertex(fSX(v),
+                      fSY(v),
+                      limG1_ia((s64)gteOFX + (s64)(gteIR1 * fquotient)), // TODO: MAC1 calc instead of IR1.
+                      limG2_ia((s64)gteOFY + (s64)(gteIR2 * fquotient)), // TODO: MAC2 calc instead of IR2.
+					  ((s64)fSZ(v)));                                    // TODO: MAC3 calc instead of fSZ(v).
 	}
 	gteMAC0 = F((s64)gteDQB + ((s64)gteDQA * quotient));
 	gteIR0 = limH(gteMAC0 >> 12);
diff --git a/libpcsxcore/plugins.c b/libpcsxcore/plugins.c
index dca6e7b6..28c9c327 100644
--- a/libpcsxcore/plugins.c
+++ b/libpcsxcore/plugins.c
@@ -54,6 +54,7 @@ GPUregisterCallback   GPU_registerCallback;
 GPUidle               GPU_idle;
 GPUvisualVibration    GPU_visualVibration;
 GPUcursor             GPU_cursor;
+GPUaddVertex          GPU_addVertex;
 
 CDRinit               CDR_init;
 CDRshutdown           CDR_shutdown;
@@ -223,6 +224,7 @@ void CALLBACK GPU__registerCallback(void (CALLBACK *callback)(int)) {}
 void CALLBACK GPU__idle(void) {}
 void CALLBACK GPU__visualVibration(unsigned long iSmall, unsigned long iBig) {}
 void CALLBACK GPU__cursor(int player, int x, int y) {}
+void CALLBACK GPU__addVertex(short sx,short sy,s64 fx,s64 fy,s64 fz) {}
 
 #define LoadGpuSym1(dest, name) \
 	LoadSym(GPU_##dest, GPU##dest, name, TRUE);
@@ -267,6 +269,7 @@ static int LoadGPUplugin(const char *GPUdll) {
     LoadGpuSym0(idle, "GPUidle");
     LoadGpuSym0(visualVibration, "GPUvisualVibration");
     LoadGpuSym0(cursor, "GPUcursor");
+	LoadGpuSym0(addVertex, "GPUaddVertex");
 	LoadGpuSym0(configure, "GPUconfigure");
 	LoadGpuSym0(test, "GPUtest");
 	LoadGpuSym0(about, "GPUabout");
diff --git a/libpcsxcore/plugins.h b/libpcsxcore/plugins.h
index 4a90c367..cf2dbdff 100644
--- a/libpcsxcore/plugins.h
+++ b/libpcsxcore/plugins.h
@@ -98,6 +98,7 @@ typedef void (CALLBACK* GPUregisterCallback)(void (CALLBACK *callback)(int));
 typedef void (CALLBACK* GPUidle)(void);
 typedef void (CALLBACK* GPUvisualVibration)(uint32_t, uint32_t);
 typedef void (CALLBACK* GPUcursor)(int, int, int);
+    typedef void (CALLBACK* GPUaddVertex)(short,short,s64,s64,s64);
 
 // GPU function pointers
 extern GPUupdateLace    GPU_updateLace;
@@ -127,6 +128,7 @@ extern GPUregisterCallback GPU_registerCallback;
 extern GPUidle          GPU_idle;
 extern GPUvisualVibration GPU_visualVibration;
 extern GPUcursor        GPU_cursor;
+extern GPUaddVertex     GPU_addVertex;
 
 // CD-ROM Functions
 typedef long (CALLBACK* CDRinit)(void);
-- 
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