From e97366c023ee81d0feefa131ed38c77131d29f40 Mon Sep 17 00:00:00 2001
From: aap <aap@papnet.eu>
Date: Thu, 29 Oct 2020 19:11:47 +0100
Subject: implemented extra model flags for backface culling and alpha test
 from mobile

---
 src/rw/RwHelper.cpp          | 24 ++++++++++++++++++++++--
 src/rw/RwHelper.h            |  2 ++
 src/rw/VisibilityPlugins.cpp |  9 +++++++++
 3 files changed, 33 insertions(+), 2 deletions(-)

(limited to 'src/rw')

diff --git a/src/rw/RwHelper.cpp b/src/rw/RwHelper.cpp
index 4b598e9b..6a7010e2 100644
--- a/src/rw/RwHelper.cpp
+++ b/src/rw/RwHelper.cpp
@@ -3,6 +3,7 @@
 #endif
 #include "common.h"
 
+#include "RwHelper.h"
 #include "Timecycle.h"
 #include "skeleton.h"
 #include "Debug.h"
@@ -16,6 +17,7 @@ bool gPS2alphaTest = true;
 #else
 bool gPS2alphaTest = false;
 #endif
+bool gBackfaceCulling = true;
 
 #ifndef FINAL
 static bool charsetOpen;
@@ -121,14 +123,32 @@ DefinedState(void)
 
 #ifdef LIBRW
 	rw::SetRenderState(rw::ALPHATESTFUNC, rw::ALPHAGREATEREQUAL);
-	rw::SetRenderState(rw::ALPHATESTREF, 3);
 
 	rw::SetRenderState(rw::GSALPHATEST, gPS2alphaTest);
 #else
 	// D3D stuff
 	RwD3D8SetRenderState(D3DRS_ALPHAFUNC, D3DCMP_GREATER);
-	RwD3D8SetRenderState(D3DRS_ALPHAREF, 2);
 #endif
+	SetAlphaRef(2);
+}
+
+void
+SetAlphaRef(int ref)
+{
+#ifdef LIBRW
+	rw::SetRenderState(rw::ALPHATESTREF, ref+1);
+#else
+	RwD3D8SetRenderState(D3DRS_ALPHAREF, ref);
+#endif
+}
+
+void
+SetCullMode(uint32 mode)
+{
+	if(gBackfaceCulling)
+		RwRenderStateSet(rwRENDERSTATECULLMODE, (void*)mode);
+	else
+		RwRenderStateSet(rwRENDERSTATECULLMODE, (void*)rwCULLMODECULLNONE);
 }
 
 RwFrame*
diff --git a/src/rw/RwHelper.h b/src/rw/RwHelper.h
index eceaee07..130eb636 100644
--- a/src/rw/RwHelper.h
+++ b/src/rw/RwHelper.h
@@ -11,6 +11,8 @@ void DestroyDebugFont();
 void ObrsPrintfString(const char *str, short x, short y);
 void FlushObrsPrintfs();
 void DefinedState(void);
+void SetAlphaRef(int ref);
+void SetCullMode(uint32 mode);
 RwFrame *GetFirstChild(RwFrame *frame);
 RwObject *GetFirstObject(RwFrame *frame);
 RpAtomic *GetFirstAtomic(RpClump *clump);
diff --git a/src/rw/VisibilityPlugins.cpp b/src/rw/VisibilityPlugins.cpp
index b2e252a0..c47cedca 100644
--- a/src/rw/VisibilityPlugins.cpp
+++ b/src/rw/VisibilityPlugins.cpp
@@ -1,5 +1,6 @@
 #include "common.h"
 
+#include "RwHelper.h"
 #include "templates.h"
 #include "Entity.h"
 #include "ModelInfo.h"
@@ -158,6 +159,10 @@ CVisibilityPlugins::RenderFadingEntities(void)
 		if(mi->m_noZwrite)
 #endif
 			RwRenderStateSet(rwRENDERSTATEZWRITEENABLE, FALSE);
+#ifdef EXTRA_MODEL_FLAGS
+		if(mi->m_bIsTree)
+			SetAlphaRef(128);
+#endif
 
 		if(e->bDistanceFade){
 			DeActivateDirectional();
@@ -168,6 +173,10 @@ CVisibilityPlugins::RenderFadingEntities(void)
 		}else
 			CRenderer::RenderOneNonRoad(e);
 
+#ifdef EXTRA_MODEL_FLAGS
+		if(mi->m_bIsTree)
+			SetAlphaRef(2);
+#endif
 #ifdef FIX_BUGS
 		if(mi->GetModelType() == MITYPE_SIMPLE && mi->m_noZwrite)
 #else
-- 
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