Added ambient term support for directional light.

--HG--
branch : gsoc2013-dfighter

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

@@ -66,6 +66,14 @@ namespace NL3D
 			Light5ColDiff,
 			Light6ColDiff,
 			Light7ColDiff,
+			Light0ColAmb,
+			Light1ColAmb,
+			Light2ColAmb,
+			Light3ColAmb,
+			Light4ColAmb,
+			Light5ColAmb,
+			Light6ColAmb,
+			Light7ColAmb,
 			NUM_UNIFORMS
 		};
 

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

@@ -212,6 +212,14 @@ namespace NL3D
 		"light5ColDiff",
 		"light6ColDiff",
 		"light7ColDiff",
+		"light0ColAmb",
+		"light1ColAmb",
+		"light2ColAmb",
+		"light3ColAmb",
+		"light4ColAmb",
+		"light5ColAmb",
+		"light6ColAmb",
+		"light7ColAmb"
 	};
 
 	void CGLSLProgram::cacheUniformIndices()

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

@@ -360,6 +360,7 @@ namespace NL3D
 
 			case CShaderDesc::Directional:
 				ss << "uniform vec4 light" << i << "ColDiff;" << std::endl;
+				ss << "uniform vec4 light" << i << "ColAmb;" << std::endl;
 				break;
 			}
 		}
@@ -440,7 +441,13 @@ namespace NL3D
 	{
 		ss << "vec4 applyLights( vec4 col )" << std::endl;
 		ss << "{" << std::endl;
-		ss << "col = col * intensity0 * light0ColDiff;" << std::endl;
+
+		for( int i = 0; i < SHADER_MAX_LIGHTS; i++ )
+		{
+			if( desc->getLight( i ) != CShaderDesc::Nolight )
+				ss << "col = col * ( intensity" << i << " * light" << i << "ColDiff + light" << i << "ColAmb );" << std::endl;
+		}
+
 		ss << "return col;" << std::endl;
 		ss << "}" << std::endl;
 	}

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

@@ -391,10 +391,16 @@ namespace NL3D
 				setUniform3f( ld, d.direction[ 0 ], d.direction[ 1 ], d.direction[ 2 ] );
 			}
 
-			int lc = currentProgram->getUniformIndex( IProgramObject::EUniform( IProgramObject::Light0ColDiff + i ) );
-			if( lc != -1 )
+			int ldc = currentProgram->getUniformIndex( IProgramObject::EUniform( IProgramObject::Light0ColDiff + i ) );
+			if( ldc != -1 )
 			{
-				setUniform4f( lc, 1.0f, 1.0f, 1.0f, 1.0f );
+				setUniform4f( ldc, 1.0f, 1.0f, 1.0f, 1.0f );
+			}
+
+			int lac = currentProgram->getUniformIndex( IProgramObject::EUniform( IProgramObject::Light0ColAmb + i ) );
+			if( lac != -1 )
+			{
+				setUniform4f( lac, 0.1f, 0.1f, 0.1f, 1.0f );
 			}
 
 		}