GL3: Optimize VP switching

--HG--
branch : opengl3

code/nel/src/3d/driver/opengl3/driver_opengl.cpp

@@ -387,7 +387,10 @@ bool CDriverGL3::setupDisplay()
 
 	// All User Light are disabled by Default
 	for (uint i = 0; i < MaxLight; ++i)
+	{
 		_UserLightEnable[i] = false;
+		touchLightVP(i);
+	}
 
 	// init _DriverGLStates
 	_DriverGLStates.init();
@@ -1029,8 +1032,8 @@ bool CDriverGL3::fogEnabled()
 void CDriverGL3::enableFog(bool enable)
 {
 	H_AUTO_OGL(CDriverGL3_enableFog)
-	_DriverGLStates.enableFog(enable);
 	_FogEnabled = enable;
+	enableFogVP(enable);
 }
 
 // ***************************************************************************

code/nel/src/3d/driver/opengl3/driver_opengl.h

@@ -398,7 +398,11 @@ public:
 	bool					setupUniforms();
 	void					setupUniforms(TProgram program);
 
-	CVertexProgram			*generateBuiltinVertexProgram();
+	void					generateBuiltinVertexProgram();
+	void					enableFogVP(bool enable);
+	void					enableLightingVP(bool enable);
+	void					touchLightVP(int i);
+	void					touchVertexFormatVP();
 
 	virtual void			startSpecularBatch();
 	virtual void			endSpecularBatch();
@@ -1356,6 +1360,8 @@ private:
 	CPixelProgram *m_DriverPixelProgram;
 
 	std::set<CVPBuiltin> m_VPBuiltinCache;
+	CVPBuiltin m_VPBuiltinCurrent;
+	bool m_VPBuiltinTouched;
 
 	// init EMBM settings (set each stage to modify the next)
 	void	initEMBM();

code/nel/src/3d/driver/opengl3/driver_opengl_light.cpp

@@ -74,8 +74,8 @@ void	CDriverGL3::setLightInternal(uint8 num, const CLight& light)
 
 		// Copy the mode
 		_LightMode[num] = mode;
-
 		_UserLight[num] = light;
+		touchLightVP(num);
 
 		// Set the position
 		if ((mode == CLight::DirectionalLight) || (mode == CLight::SpotLight))
@@ -136,6 +136,7 @@ void	CDriverGL3::enableLightInternal(uint8 num, bool enable)
 	{
 		// _DriverGLStates.enableLight(num, enable); // FIXME GL3 VERTEX PROGRAM
 		_UserLightEnable[num] = enable;
+		touchLightVP(num);
 	}
 }
 
@@ -201,9 +202,10 @@ void			CDriverGL3::setupLightMapDynamicLighting(bool enable)
 
 void CDriverGL3::disableAllLights()
 {
-	for (int i = 0; i < MaxLight; i++)
+	for (int i = 0; i < MaxLight; ++i)
 	{
 		_UserLightEnable[i] = false;
+		touchLightVP(i);
 	}
 }
 

code/nel/src/3d/driver/opengl3/driver_opengl_material.cpp

@@ -437,7 +437,7 @@ bool CDriverGL3::setupMaterial(CMaterial& mat)
 
 		// Light Part.
 
-		_DriverGLStates.enableLighting(mat.getFlags() & IDRV_MAT_LIGHTING);
+		enableLightingVP(mat.getFlags() & IDRV_MAT_LIGHTING);
 
 		if ((mat.getFlags() & IDRV_MAT_LIGHTING) == 0)
 			disableAllLights();
@@ -463,12 +463,12 @@ bool CDriverGL3::setupMaterial(CMaterial& mat)
 		// Disable fog if dest blend is ONE
 		if (blend && (pShader->DstBlend == GL_ONE))
 		{
-			_DriverGLStates.enableFog(false);
+			enableFogVP(false);
 		}
 		else
 		{
 			// Restaure fog state to its current value
-			_DriverGLStates.enableFog(_FogEnabled);
+			enableFogVP(_FogEnabled);
 		}
 
 
@@ -781,7 +781,7 @@ sint CDriverGL3::beginLightMapMultiPass ()
 	computeLightMapInfos (mat);
 
 	// always enable lighting for lightmap (because of dynamic light)
-	_DriverGLStates.enableLighting(true);
+	enableLightingVP(true);
 
 	// if the dynamic lightmap light has changed since the last render (should not happen), resetup
 	// normal way is that setupLightMapDynamicLighting() is called in setupMaterial() if shader different from prec

code/nel/src/3d/driver/opengl3/driver_opengl_program.cpp

@@ -151,6 +151,9 @@ namespace NL3D
 	{
 		if (driver) nlassert(m_UserVertexProgram == NULL);
 
+		if (m_DriverVertexProgram == program)
+			return true;
+
 		if (program == NULL)
 		{
 			nglUseProgramStages(ppoId, GL_VERTEX_SHADER_BIT, 0);
@@ -249,6 +252,9 @@ namespace NL3D
 	{
 		if (driver) nlassert(m_UserPixelProgram == NULL);
 
+		if (m_DriverPixelProgram == program)
+			return true;
+
 		if (program == NULL)
 		{
 			nglUseProgramStages(ppoId, GL_FRAGMENT_SHADER_BIT, 0);
@@ -601,10 +607,15 @@ namespace NL3D
 	{
 		if (m_UserVertexProgram) return true;
 
-		CVertexProgram *vertexProgram = generateBuiltinVertexProgram();
+		touchVertexFormatVP(); // TODO
-		nlassert(vertexProgram);
+
+		if (m_VPBuiltinTouched)
+		{
+			generateBuiltinVertexProgram();
+			nlassert(m_VPBuiltinCurrent.VertexProgram);
+		}
 
-		if (!activeVertexProgram(vertexProgram, true))
+		if (!activeVertexProgram(m_VPBuiltinCurrent.VertexProgram, true))
 			return false;
 
 		// GL3 TODO: Here we set the uniforms of the vertex program!

code/nel/src/3d/driver/opengl3/driver_opengl_states.cpp

@@ -72,11 +72,9 @@ void			CDriverGLStates3::forceDefaults(uint nbStages)
 	H_AUTO_OGL(CDriverGLStates3_forceDefaults);
 
 	// Enable / disable.
-	_CurFog = false;
 	_CurBlend = false;
 	_CurCullFace = true;
 	_CurAlphaTest = false;
-	_CurLighting = false;
 	_CurZWrite = true;
 	_CurStencilTest =false;
 
@@ -229,14 +227,6 @@ void			CDriverGLStates3::enableAlphaTest(uint enable)
 	}
 }
 
-// ***************************************************************************
-void			CDriverGLStates3::enableLighting(uint enable)
-{
-	H_AUTO_OGL(CDriverGLStates3_enableLighting)
-
-	_CurLighting = (enable != 0);
-}
-
 // ***************************************************************************
 void			CDriverGLStates3::enableZWrite(uint enable)
 {
@@ -583,21 +573,6 @@ void CDriverGLStates3::enableVertexAttribArrayARB(uint glIndex,bool enable)
 
 }
 
-// ***************************************************************************
-void			CDriverGLStates3::enableFog(uint enable)
-{
-	H_AUTO_OGL(CDriverGLStates3_enableFog)
-	// If different from current setup, update.
-	bool	enabled= (enable!=0);
-#ifndef NL3D_GLSTATE_DISABLE_CACHE
-	if (enabled != _CurFog)
-#endif
-	{
-		// new state.
-		_CurFog= enabled;
-	}
-}
-
 // ***************************************************************************
 void CDriverGLStates3::forceBindARBVertexBuffer(uint objectID)
 {

code/nel/src/3d/driver/opengl3/driver_opengl_states.h

@@ -84,15 +84,10 @@ public:
 	/// \name enable if !0
 	// @{
 	void			enableBlend(uint enable);
-	void			enableFog(uint enable);
-	bool			isFogEnabled() const { return _CurFog; }
 	void			enableCullFace(uint enable);
 	/// enable and set good AlphaFunc.
 	void			enableAlphaTest(uint enable);
 	void			enableZWrite(uint enable);
-	// overall lighting enabled
-	void			enableLighting(uint enable);
-	bool			isLightingEnabled() const { return _CurLighting; }
 	/// enable/disable stencil test
 	void			enableStencilTest(bool enable);
 	bool			isStencilTestEnabled() const { return _CurStencilTest; }
@@ -165,10 +160,8 @@ public:
 
 private:
 	bool			_CurBlend;
-	bool			_CurFog;
 	bool			_CurCullFace;
 	bool			_CurAlphaTest;
-	bool			_CurLighting;
 	bool			_CurZWrite;
 	bool			_CurStencilTest;
 

code/nel/src/3d/driver/opengl3/driver_opengl_vertex_program.cpp

@@ -355,23 +355,17 @@ namespace
 	}
 }
 
-CVertexProgram *CDriverGL3::generateBuiltinVertexProgram()
+void CDriverGL3::generateBuiltinVertexProgram()
 {
-	CVPBuiltin desc;
+	std::set<CVPBuiltin>::iterator it = m_VPBuiltinCache.find(m_VPBuiltinCurrent);
-	desc.VertexFormat = _CurrentVertexBufferHard->VB->getVertexFormat();
-	desc.Fog = _DriverGLStates.isFogEnabled();
-	desc.Lighting = _DriverGLStates.isLightingEnabled();
-	if (desc.Lighting)
-		for (sint i = 0; i < MaxLight; ++i)
-			desc.LightMode[i] = _UserLightEnable[i] ? _LightMode[i] : -1;
-	desc.VertexColorLighted = false; // _DriverGLStates._VertexColorLighted;
-
-	std::set<CVPBuiltin>::iterator it = m_VPBuiltinCache.find(desc);
 	if (it != m_VPBuiltinCache.end())
-		return it->VertexProgram;
+	{
+		m_VPBuiltinCurrent.VertexProgram = it->VertexProgram;
+		return;
+	}
 
 	std::string result;
-	vpGenerate(result, desc);
+	vpGenerate(result, m_VPBuiltinCurrent);
 
 	CVertexProgram *vertexProgram = new CVertexProgram();
 	IProgram::CSource *src = new IProgram::CSource();
@@ -387,10 +381,50 @@ CVertexProgram *CDriverGL3::generateBuiltinVertexProgram()
 		delete vertexProgram; vertexProgram = NULL;
 	}
 
-	desc.VertexProgram = vertexProgram;
+	m_VPBuiltinCurrent.VertexProgram = vertexProgram;
-	m_VPBuiltinCache.insert(desc);
+	m_VPBuiltinCache.insert(m_VPBuiltinCurrent);
+}
+
+void CDriverGL3::enableFogVP(bool enable)
+{
+	H_AUTO_OGL(CDriverGL3_enableFogInternal)
+	if (m_VPBuiltinCurrent.Fog != enable)
+	{
+		m_VPBuiltinCurrent.Fog = enable;
+		m_VPBuiltinTouched = true;
+	}
+}
 
-	return desc.VertexProgram;
+void CDriverGL3::enableLightingVP(bool enable)
+{
+	H_AUTO_OGL(CDriverGL3_enableLightingVP)
+	if (m_VPBuiltinCurrent.Lighting != enable)
+	{
+		m_VPBuiltinCurrent.Lighting = enable;
+		m_VPBuiltinTouched = true;
+	}
+}
+
+void CDriverGL3::touchLightVP(int i)
+{
+	H_AUTO_OGL(CDriverGL3_touchLightVP)
+	sint mode = _UserLightEnable[i] ? _LightMode[i] : -1;
+	if (m_VPBuiltinCurrent.LightMode[i] != mode)
+	{
+		m_VPBuiltinCurrent.LightMode[i] = mode;
+		m_VPBuiltinTouched = true;
+	}
+}
+
+void CDriverGL3::touchVertexFormatVP()
+{
+	H_AUTO_OGL(CDriverGL3_touchLightVP)
+	uint16 format = _CurrentVertexBufferHard->VB->getVertexFormat();
+	if (m_VPBuiltinCurrent.VertexFormat != format)
+	{
+		m_VPBuiltinCurrent.VertexFormat = format;
+		m_VPBuiltinTouched = true;
+	}
 }
 
 #ifdef NL_STATIC