From 9afe991cbc6cb2bff0c77fc25767dddfb81231f6 Mon Sep 17 00:00:00 2001
From: jarmonik <jnikkanen@kymp.net>
Date: Tue, 14 Nov 2023 21:59:59 +0200
Subject: [PATCH] Updated BakedVC shader to use baked sunlight map

---
 OVP/D3D9Client/D3D9Effect.cpp        |  2 ++
 OVP/D3D9Client/D3D9Effect.h          |  1 +
 OVP/D3D9Client/Mesh.cpp              |  2 ++
 OVP/D3D9Client/shaders/BakedVC.fx    |  8 ++++++--
 OVP/D3D9Client/shaders/D3D9Client.fx | 13 +++++++++++++
 5 files changed, 24 insertions(+), 2 deletions(-)

diff --git a/OVP/D3D9Client/D3D9Effect.cpp b/OVP/D3D9Client/D3D9Effect.cpp
index b39a78ef6..62c299bf7 100644
--- a/OVP/D3D9Client/D3D9Effect.cpp
+++ b/OVP/D3D9Client/D3D9Effect.cpp
@@ -83,6 +83,7 @@ D3DXHANDLE D3D9Effect::eTransmMap = 0;
 D3DXHANDLE D3D9Effect::eIrradMap = 0;
 D3DXHANDLE D3D9Effect::eAmbientMap = 0;
 D3DXHANDLE D3D9Effect::eCombinedMap = 0;
+D3DXHANDLE D3D9Effect::eCombSunMap = 0;
 
 D3DXHANDLE D3D9Effect::eSpecularMode = 0;
 D3DXHANDLE D3D9Effect::eHazeMode = 0;
@@ -486,6 +487,7 @@ void D3D9Effect::D3D9TechInit(D3D9Client *_gc, LPDIRECT3DDEVICE9 _pDev, const ch
 	eIrradMap     = FX->GetParameterByName(0,"gIrradianceMap");
 	eAmbientMap	  = FX->GetParameterByName(0, "gAmbientMap");
 	eCombinedMap  = FX->GetParameterByName(0, "gCombinedMap");
+	eCombSunMap	  = FX->GetParameterByName(0, "gCombinedSunMap");
 
 	// Atmosphere -----------------------------------------------------------
 	eGlobalAmb	  = FX->GetParameterByName(0,"gGlobalAmb");
diff --git a/OVP/D3D9Client/D3D9Effect.h b/OVP/D3D9Client/D3D9Effect.h
index a1086c278..e320ebcc5 100644
--- a/OVP/D3D9Client/D3D9Effect.h
+++ b/OVP/D3D9Client/D3D9Effect.h
@@ -185,6 +185,7 @@ class D3D9Effect {
 	static D3DXHANDLE	eIrradMap;
 	static D3DXHANDLE	eAmbientMap;
 	static D3DXHANDLE	eCombinedMap;
+	static D3DXHANDLE	eCombSunMap;
 
 	// Legacy Atmosphere -----------------------------------------------
 	static D3DXHANDLE	eGlobalAmb;	 
diff --git a/OVP/D3D9Client/Mesh.cpp b/OVP/D3D9Client/Mesh.cpp
index 57fb9470c..d6f501cb8 100644
--- a/OVP/D3D9Client/Mesh.cpp
+++ b/OVP/D3D9Client/Mesh.cpp
@@ -2030,9 +2030,11 @@ void D3D9Mesh::Render(const LPD3DXMATRIX pW, int iTech, LPDIRECT3DCUBETEXTURE9 *
 
 						LPDIRECT3DTEXTURE9 pAmbi = Tex[ti]->GetMap(MAP_AMBIENT);
 						LPDIRECT3DTEXTURE9 pComb = (bm == BakedLights.end() ? NULL : bm->second.pCombined);
+						LPDIRECT3DTEXTURE9 pSun = (bm == BakedLights.end() ? NULL : bm->second.pSunAOComb);
 
 						if (pAmbi) FX->SetTexture(eAmbientMap, pAmbi);
 						if (pComb) FX->SetTexture(eCombinedMap, pComb);
+						if (pSun)  FX->SetTexture(eCombSunMap, pSun);
 
 						FC.Baked = (pComb != NULL);
 						FC.BakedAO = (pAmbi != NULL);
diff --git a/OVP/D3D9Client/shaders/BakedVC.fx b/OVP/D3D9Client/shaders/BakedVC.fx
index 7ae77e672..1bca1a88e 100644
--- a/OVP/D3D9Client/shaders/BakedVC.fx
+++ b/OVP/D3D9Client/shaders/BakedVC.fx
@@ -46,9 +46,13 @@ float4 BakedVC_PS(float4 sc : VPOS, PBRData frg) : COLOR
 	else		   cEmis = 0;
 
 	float3 cBL = 0;
+	float3 cBS = 0;
 	float3 cBAO = 0;
 
-	if (gCfg.Baked) cBL = tex2D(BakedLightS, frg.tex0.xy).rgb;
+	if (gCfg.Baked) {
+		cBL = tex2D(BakedLightS, frg.tex0.xy).rgb;
+		cBS = tex2D(BakedSunS, frg.tex0.xy).rgb;
+	}
 	if (gCfg.BakedAO) cBAO = tex2D(BakedAOS, frg.tex0.xy).rgb;
 	
 
@@ -186,7 +190,7 @@ float4 BakedVC_PS(float4 sc : VPOS, PBRData frg) : COLOR
 	fA += fRgh * fMetal * 0.05f;
 
 	// gVCAmbient is an application and debug controls controllable variable
-	float3 zD = cDiff.rgb * fA * LightFXSq(gMtrl.diffuse.rgb * (Sq(cSun * fR * dLN)) + Sq(gMtrl.emissive.rgb) + Sq(cBL) + Sq(gVCAmbient));
+	float3 zD = cDiff.rgb * fA * LightFXSq(gMtrl.diffuse.rgb * (Sq(cSun * fR * dLN)) + Sq(gMtrl.emissive.rgb) + Sq(cBL) + Sq(cBS) + Sq(gVCAmbient));
 
 	// Combine specular terms
 	float3 zS = cS * (cSun * dLN);		
diff --git a/OVP/D3D9Client/shaders/D3D9Client.fx b/OVP/D3D9Client/shaders/D3D9Client.fx
index bc01733bb..d362685f4 100644
--- a/OVP/D3D9Client/shaders/D3D9Client.fx
+++ b/OVP/D3D9Client/shaders/D3D9Client.fx
@@ -156,6 +156,7 @@ uniform extern texture   gTransmMap;		// Transmittance Map
 uniform extern texture   gIrradianceMap;    // Irradiance Map
 uniform extern texture   gAmbientMap;		// Baked Ambient occlusion map
 uniform extern texture   gCombinedMap;		// Combined baked light map
+uniform extern texture   gCombinedSunMap;	// Combined baked light map
 
 // Legacy Atmosphere --------------------------------------------------------
 
@@ -312,6 +313,18 @@ sampler BakedLightS = sampler_state       // Primary Mesh texture sampler
 	AddressV = WRAP;
 };
 
+sampler BakedSunS = sampler_state       // Primary Mesh texture sampler
+{
+	Texture = <gCombinedSunMap>;
+	MinFilter = ANISOTROPIC;
+	MagFilter = LINEAR;
+	MipFilter = LINEAR;
+	MaxAnisotropy = ANISOTROPY_MACRO;
+	MipMapLODBias = 0;
+	AddressU = WRAP;
+	AddressV = WRAP;
+};
+
 sampler BakedAOS = sampler_state       // Primary Mesh texture sampler
 {
 	Texture = <gAmbientMap>;