Added diffuse directional light support to the normal shader.

--HG--
branch : gsoc2013-dfighter

code/nel/include/nel/3d/i_program_object.h

@@ -50,6 +50,22 @@ namespace NL3D
 			FogEnd,
 			FogColor,
 			FogDensity,
+			Light0Dir,
+			Light1Dir,
+			Light2Dir,
+			Light3Dir,
+			Light4Dir,
+			Light5Dir,
+			Light6Dir,
+			Light7Dir,
+			Light0Col,
+			Light1Col,
+			Light2Col,
+			Light3Col,
+			Light4Col,
+			Light5Col,
+			Light6Col,
+			Light7Col,
 			NUM_UNIFORMS
 		};
 

code/nel/src/3d/driver/OpenGL3/driver_glsl_program.cpp

@@ -195,7 +195,23 @@ namespace NL3D
 		"fogStart",
 		"fogEnd",
 		"fogColor",
-		"fogDensity"
+		"fogDensity",
+		"light0Dir",
+		"light1Dir",
+		"light2Dir",
+		"light3Dir",
+		"light4Dir",
+		"light5Dir",
+		"light6Dir",
+		"light7Dir",
+		"light0Col",
+		"light1Col",
+		"light2Col",
+		"light3Col",
+		"light4Col",
+		"light5Col",
+		"light6Col",
+		"light7Col",
 	};
 
 	void CGLSLProgram::cacheUniformIndices()

code/nel/src/3d/driver/OpenGL3/driver_glsl_shader_generator.cpp

@@ -328,17 +328,173 @@ namespace NL3D
 		ss << "fragColor = applyFog( fragColor );" << std::endl;
 	}
 
+
+	/////////////////////////////////////////////////////////// Lights ////////////////////////////////////////////////////////////////////
+
+	void CGLSLShaderGenerator::addLightUniformsVS()
+	{
+		for( int i = 0; i < SHADER_MAX_LIGHTS; i++ )
+		{
+			switch( desc->getLight( i ) )
+			{
+			case CShaderDesc::Nolight:
+				continue;
+				break;
+
+			case CShaderDesc::Directional:
+				ss << "uniform vec3 light" << i << "Dir;" << std::endl;
+				break;
+			}
+		}
+	}
+
+	void CGLSLShaderGenerator::addLightUniformsFS()
+	{
+		for( int i = 0; i < SHADER_MAX_LIGHTS; i++ )
+		{
+			switch( desc->getLight( i ) )
+			{
+			case CShaderDesc::Nolight:
+				continue;
+				break;
+
+			case CShaderDesc::Directional:
+				ss << "uniform vec4 light" << i << "Col;" << std::endl;
+				break;
+			}
+		}
+
+	}
+
+	void CGLSLShaderGenerator::addLightOutsVS()
+	{
+		for( int i = 0; i < SHADER_MAX_LIGHTS; i++ )
+		{
+			switch( desc->getLight( i ) )
+			{
+			case CShaderDesc::Nolight:
+				continue;
+				break;
+
+			case CShaderDesc::Directional:
+				ss << "smooth out float intensity" << i << ";" << std::endl;
+				break;
+			}
+		}
+	}
+
+	void CGLSLShaderGenerator::addLightInsFS()
+	{
+		for( int i = 0; i < SHADER_MAX_LIGHTS; i++ )
+		{
+			switch( desc->getLight( i ) )
+			{
+			case CShaderDesc::Nolight:
+				continue;
+				break;
+
+			case CShaderDesc::Directional:
+				ss << "smooth in float intensity" << i << ";" << std::endl;
+				break;
+			}
+		}
+	}
+
+	void CGLSLShaderGenerator::addDirectionalFunctionVS( int num )
+	{
+		ss << "float getIntensity" << num << "( void )" << std::endl;
+		ss << "{" << std::endl;
+		ss << "mat3 nmat;" << std::endl;
+		ss << "nmat[ 0 ] = mvMatrix[ 0 ].xyz;" << std::endl;
+		ss << "nmat[ 1 ] = mvMatrix[ 1 ].xyz;" << std::endl;
+		ss << "nmat[ 2 ] = mvMatrix[ 2 ].xyz;" << std::endl;
+		ss << "nmat = inverse( nmat );" << std::endl;
+		ss << "nmat = transpose( nmat );" << std::endl;
+		ss << "vec3 normal3 = vnormal.xyz / vnormal.w;" << std::endl;
+		ss << "normal3 = nmat * normal3;" << std::endl;
+		ss << "float angle = dot( normalize( light" << num << "Dir ), normal3 );" << std::endl;
+		ss << "angle = max( 0.0, angle );" << std::endl;
+		ss << "return angle;" << std::endl;
+		ss << "}" << std::endl;
+		ss << std::endl;
+	}
+
+	void CGLSLShaderGenerator::addLightsFunctionVS()
+	{
+		for( int i = 0; i < SHADER_MAX_LIGHTS; i++ )
+		{
+			switch( desc->getLight( i ) )
+			{
+			case CShaderDesc::Nolight:
+				continue;
+				break;
+
+			case CShaderDesc::Directional:
+				addDirectionalFunctionVS( i );
+				break;
+			}
+		}
+	}
+
+	void CGLSLShaderGenerator::addLightsFunctionFS()
+	{
+		ss << "vec4 applyLights( vec4 col )" << std::endl;
+		ss << "{" << std::endl;
+		ss << "col = col * intensity0 * light0Col;" << std::endl;
+		ss << "return col;" << std::endl;
+		ss << "}" << std::endl;
+	}
+
+	void CGLSLShaderGenerator::addLightsVS()
+	{
+		for( int i = 0; i < SHADER_MAX_LIGHTS; i++ )
+		{
+			switch( desc->getLight( i ) )
+			{
+			case CShaderDesc::Nolight:
+				continue;
+				break;
+
+			case CShaderDesc::Directional:
+				ss << "intensity" << i << " = getIntensity" << i << "();" << std::endl;
+				break;
+			}
+		}
+	}
+
+	void CGLSLShaderGenerator::addLightsFS()
+	{
+		ss << "fragColor = applyLights( fragColor );" << std::endl;
+	}
+
+	/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
 	void CGLSLShaderGenerator::generateNormalVS()
 	{
-		if( desc->fogEnabled() )
+		if( desc->fogEnabled() || desc->lightingEnabled() )
 		{
 			ss << "uniform mat4 mvMatrix;" << std::endl;
-			ss << "smooth out vec4 ecPos;" << std::endl;
 		}
+		if( desc->fogEnabled() )
+			ss << "smooth out vec4 ecPos;" << std::endl;
 		ss << std::endl;
 
+		if( desc->lightingEnabled() )
+		{
+			addLightUniformsVS();
+			addLightOutsVS();
+			ss << std::endl;
+
+			addLightsFunctionVS();
+			ss << std::endl;
+		}
+		
 		ss << "void main( void )" << std::endl;
 		ss << "{" << std::endl;
+		
+		if( desc->lightingEnabled() )
+			addLightsVS();
+
 		ss << "gl_Position = mvpMatrix * " << "v" << attribNames[ 0 ] << ";" << std::endl;
 
 		if( desc->fogEnabled() )
@@ -539,6 +695,16 @@ namespace NL3D
 
 		ss << std::endl;
 
+		if( desc->lightingEnabled() )
+		{
+			addLightUniformsFS();
+			addLightInsFS();
+			ss << std::endl;
+			
+			addLightsFunctionFS();
+			ss << std::endl;
+		}
+
 		if( desc->fogEnabled() )
 			addFogFunction();
 		
@@ -581,6 +747,9 @@ namespace NL3D
 
 		ss << "fragColor = texel;" << std::endl;
 
+		if( desc->lightingEnabled() )
+			addLightsFS();
+
 		if( desc->fogEnabled() )
 			addFog();
 

code/nel/src/3d/driver/OpenGL3/driver_glsl_shader_generator.h

@@ -52,6 +52,18 @@ namespace NL3D
 		void addFogFunction();
 		void addFog();
 
+		//////////////////////////// Lights ///////////////////////////
+		void addLightUniformsVS();
+		void addLightUniformsFS();
+		void addLightOutsVS();
+		void addLightInsFS();
+		void addDirectionalFunctionVS( int num );
+		void addLightsFunctionVS();
+		void addLightsFunctionFS();
+		void addLightsVS();
+		void addLightsFS();
+		//////////////////////////////////////////////////////////////
+
 		void generateNormalVS();
 		void generateSpecularVS();
 

code/nel/src/3d/driver/OpenGL3/driver_opengl.h

@@ -1278,6 +1278,7 @@ private:
 	int getUniformLocation( const char *name );
 
 	void setUniform1f( uint index, float f );
+	void setUniform3f( uint index, float f1, float f2, float f3 );
 	void setUniform4f( uint index, float f1, float f2, float f3, float f4  );
 	void setUniform1i( uint index, int i );
 	void setUniform4i( uint index, int i1, int i2, int i3, int i4 );

code/nel/src/3d/driver/OpenGL3/driver_opengl_material.cpp

@@ -432,7 +432,7 @@ bool CDriverGL3::setupMaterial(CMaterial& mat)
 		//=====================
 
 		// Light Part.
-#ifndef GLSL
+
 		_DriverGLStates.enableLighting(mat.getFlags()&IDRV_MAT_LIGHTING);
 		if(mat.getFlags()&IDRV_MAT_LIGHTING)
 		{
@@ -442,18 +442,19 @@ bool CDriverGL3::setupMaterial(CMaterial& mat)
 			_DriverGLStates.setSpecular(pShader->PackedSpecular, pShader->Specular);
 			_DriverGLStates.setShininess(mat.getShininess());
 			_DriverGLStates.setVertexColorLighted(mat.isLightedVertexColor ());
+
 		}
 		else
 		{
+#ifndef GLSL
 			// Color unlit part.
 			CRGBA	col= mat.getColor();
 			glColor4ub(col.R, col.G, col.B, col.A);
+#endif
 
 			_DriverGLStates.setVertexColorLighted(false);
 		}
 
-#endif
-
 		// Fog Part.
 		//=================
 

code/nel/src/3d/driver/OpenGL3/driver_opengl_program.cpp

@@ -96,6 +96,11 @@ namespace NL3D
 		nglUniform1f( index, f );
 	}
 
+	void CDriverGL3::setUniform3f( uint index, float f1, float f2, float f3 )
+	{
+		nglUniform3f( index, f1, f2, f3 );
+	}
+
 	void CDriverGL3::setUniform4f( uint index, float f1, float f2, float f3, float f4 )
 	{
 		nglUniform4f( index, f1, f2, f3, f4 );
@@ -160,17 +165,52 @@ namespace NL3D
 
 		if( mat.getShader() == CMaterial::Normal )
 		{
-			for( i = 0; i < MAX_TEXTURES; i++ )
+			int maxTextures = std::min( int( SHADER_MAX_TEXTURES ), int( IDRV_MAT_MAXTEXTURES ) );
+			for( i = 0; i < maxTextures; i++ )
 			{
 				desc.setTexEnvMode( i, mat.getTexEnvMode( i ) );
 			}
 		}
 
-		desc.setAlphaTest( mat.getAlphaTest() );
-		desc.setAlphaTestThreshold( mat.getAlphaTestThreshold() );
+		if( mat.getAlphaTest() )
+		{
+			desc.setAlphaTest( true );
+			desc.setAlphaTestThreshold( mat.getAlphaTestThreshold() );
+		}
+
+		if( fogEnabled() )
+		{
+			desc.setFog( true );
+			desc.setFogMode( CShaderDesc::Linear );
+		}
+
+		int maxLights = std::min( int( SHADER_MAX_LIGHTS ), int( MaxLight ) );
+		bool enableLights = false;
+		for( int i = 0; i < maxLights; i++ )
+		{
+			if( !_UserLightEnable[ i ] )
+				continue;
+
+			enableLights = true;
+			
+			switch( _LightMode[ i ] )
+			{
+			case CLight::DirectionalLight:
+				desc.setLight( i, CShaderDesc::Directional );
+				break;
+			
+			case CLight::PointLight:
+				desc.setLight( i, CShaderDesc::Point );
+				break;
+			
+			case CLight::SpotLight:
+				desc.setLight( i, CShaderDesc::Spot );
+				break;
+			}
+		
+		}
 
-		desc.setFog( fogEnabled() );
-		desc.setFogMode( CShaderDesc::Linear );
+		desc.setLighting( enableLights );			
 	}
 
 
@@ -253,6 +293,13 @@ namespace NL3D
 		return true;
 	}
 
+
+	struct LightData
+	{
+		float direction[ 3 ];
+		float color[ 4 ];
+	};
+
 	void CDriverGL3::setupUniforms( CMaterial& mat )
 	{
 
@@ -322,6 +369,37 @@ namespace NL3D
 		}
 
 
+		int maxLights = std::min( int( MaxLight ), int( SHADER_MAX_LIGHTS ) );
+		for( int i = 0; i < maxLights; i++ )
+		{
+			if( !_UserLightEnable[ i ] )
+				continue;
+			
+			////////////////// Temporary insanity  ///////////////////////////////
+			if( _LightMode[ i ] != CLight::DirectionalLight )
+				continue;
+			//////////////////////////////////////////////////////////////////////
+			
+			LightData d;
+			d.direction[ 0 ] = _WorldLightDirection[ i ].x;
+			d.direction[ 1 ] = _WorldLightDirection[ i ].y;
+			d.direction[ 2 ] = _WorldLightDirection[ i ].z;
+
+			int ld = currentProgram->getUniformIndex( IProgramObject::EUniform( IProgramObject::Light0Dir + i ) );
+			if( ld != -1 )
+			{
+				setUniform3f( ld, d.direction[ 0 ], d.direction[ 1 ], d.direction[ 2 ] );
+			}
+
+			int lc = currentProgram->getUniformIndex( IProgramObject::EUniform( IProgramObject::Light0Col + i ) );
+			if( lc != -1 )
+			{
+				setUniform4f( lc, 1.0f, 1.0f, 1.0f, 1.0f );
+			}
+
+		}
+
+
 		// Lightmaps have special constants
 		if( mat.getShader() != CMaterial::LightMap )
 		{

code/nel/src/3d/driver/OpenGL3/driver_opengl_shader_desc.h

@@ -19,7 +19,8 @@
 
 #include "nel/misc/types_nl.h"
 
-#define MAX_TEXTURES 4
+#define SHADER_MAX_TEXTURES 4
+#define SHADER_MAX_LIGHTS   8
 
 namespace NL3D
 {
@@ -29,6 +30,20 @@ namespace NL3D
 	{
 	public:
 
+		enum TShaderType
+		{
+			Normal,
+			Bump_unused,
+			UserColor,
+			LightMap,
+			Specular,
+			Caustics_unused,
+			PerPixelLighting,
+			PerPixelNoSpecular,
+			Cloud,
+			Water
+		};
+		
 		enum TFogMode
 		{
 			Exponential,
@@ -36,16 +51,28 @@ namespace NL3D
 			Linear
 		};
 
+		enum TLightMode
+		{
+			Nolight,
+			Directional,
+			Point,
+			Spot
+		};
+
 		CShaderDesc(){
-			for( int i = 0; i < MAX_TEXTURES; i++ )
+			for( int i = 0; i < SHADER_MAX_TEXTURES; i++ )
 				texEnvMode[ i ] = 0;
+
+			for( int i = 0; i < SHADER_MAX_LIGHTS; i++ )
+				lightMode[ i ] = Nolight;
+			
 			features = None;
-			shaderType = 0;
+			shaderType = Normal;
 			program = NULL;
 			vbFlags = 0;
 			nlightmaps = 0;
 			alphaTestTreshold = 0.5f;
-			fogMode = Exponential;
+			fogMode = Linear;
 		}
 
 		~CShaderDesc(){
@@ -74,15 +101,25 @@ namespace NL3D
 					return false;
 			}
 
-			if( ( features & Fog ) != 0 )
+			if( fogEnabled() )
 			{
 				if( fogMode != o.fogMode )
 					return false;
 			}
 
-			for( int i = 0; i < MAX_TEXTURES; i++ )
-				if( texEnvMode[ i ] != o.texEnvMode[ i ] )
-					return false;
+			if( shaderType == Normal )
+			{
+				for( int i = 0; i < SHADER_MAX_TEXTURES; i++ )
+					if( texEnvMode[ i ] != o.texEnvMode[ i ] )
+						return false;
+			}
+
+			if( lightingEnabled() )
+			{
+				for( int i = 0; i < SHADER_MAX_LIGHTS; i++ )
+					if( lightMode[ i ] != o.lightMode[ i ] )
+						return false;
+			}
 		
 			return true;
 		}
@@ -123,6 +160,29 @@ namespace NL3D
 
 		uint32 getFogMode() const{ return fogMode; }
 
+		void setLighting( bool b )
+		{
+			if( b )
+				features |= Lighting;
+			else
+				features &= ~Lighting;
+		}
+
+		bool lightingEnabled() const
+		{
+			if( ( features & Lighting ) != 0 )
+				return true;
+			else
+				return false;
+		}
+
+		void setLight( int idx, TLightMode mode )
+		{
+			lightMode[ idx ] = mode;
+		}
+
+		TLightMode getLight( int idx ) const{ return lightMode[ idx ]; }
+
 		IProgramObject* getProgram() const{ return program; }
 
 	private:
@@ -131,16 +191,18 @@ namespace NL3D
 		{
 			None      = 0,
 			AlphaTest = 1,
-			Fog       = 2
+			Fog       = 2,
+			Lighting  = 4
 		};
 
 		uint32 features;
-		uint32 texEnvMode[ MAX_TEXTURES ];
+		uint32 texEnvMode[ SHADER_MAX_TEXTURES ];
 		uint32 vbFlags;
 		uint32 shaderType;
 		uint32 nlightmaps;
 		float alphaTestTreshold;
 		uint32 fogMode;
+		TLightMode lightMode[ SHADER_MAX_LIGHTS ];
 
 		IProgramObject *program;
 	};

code/nel/tools/3d/object_viewer_qt/src/plugins/material_editor/nel3d_interface.cpp

@@ -24,6 +24,7 @@
 #include "nel/3d/scene_user.h"
 #include "nel/3d/u_camera.h"
 #include "nel/3d/u_instance.h"
+#include "nel/3d/u_light.h"
 #include "nel/3d/u_3d_mouse_listener.h"
 #include "nel/3d/i_program.h"
 #include "nel/3d/i_program_object.h"
@@ -405,6 +406,25 @@ namespace MaterialEditor
 		driver->setDisplay( (nlWindow)wnd, NL3D::UDriver::CMode( w, h, 32 ) );
 
 		scene = driver->createScene( true );
+
+
+		driver->enableFog( true );
+		driver->setupFog( 1.0f, 5.0f, NLMISC::CRGBA::White );
+
+		NL3D::ULight *l = NL3D::ULight::createLight();
+		
+		l->setMode( NL3D::ULight::DirectionalLight );
+		l->setDirection( NLMISC::CVector( -100.0f, 100.0f, 100.0f ) );
+		l->setAmbiant( NLMISC::CRGBA::White );
+		driver->setLight( 0, *l );
+		driver->enableLight( 0, true );
+
+		delete l;
+		l = NULL;
+
+		scene->enableLightingSystem( false );
+
+
 		mouseListener = driver->create3dMouseListener();
 		mouseListener->setMouseMode( NL3D::U3dMouseListener::nelStyle );
 	}
@@ -465,9 +485,6 @@ namespace MaterialEditor
 
 		setupCamera();
 		
-		driver->enableFog( true );
-		driver->setupFog( 1.0f, 5.0f, NLMISC::CRGBA::White );
-
 		return true;
 	}