Elysian Shadows

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		void DumpShaderInfo(GLuint shader){
			GLint length;
			GLsizei slength;
			glGetShaderiv(shader, GL_INFO_LOG_LENGTH , &length);
			if(length >= 1){
				std::string txt;
				txt.resize(length);
				glGetShaderInfoLog(shader, length, &slength, (GLchar*)txt.c_str());
				std::cout << txt << std::endl;
			}
		}

		void DumpShaderProgramInfo(GLuint shaderProgram){
			GLint length;
			GLsizei slength;
			int linked;
			glGetProgramiv(shaderProgram, GL_LINK_STATUS, &linked);
			if(!linked){
				glGetProgramiv(shaderProgram, GL_INFO_LOG_LENGTH , &length);
				if(length >= 1){
					std::string txt;
					txt.resize(length);
					glGetProgramInfoLog(shaderProgram, length, &slength, (GLchar*)txt.c_str());
					std::cout << txt << std::endl;
				}
			}
		}

		GLuint LoadShader(const std::string& vertex, const std::string& fragment){
			GLuint program = glCreateProgram();
			// Vertex
			GLuint vertexShader = glCreateShader(GL_VERTEX_SHADER);
			const char* vertex_c_str = vertex.c_str();
			int vertex_length = int(vertex.length());
			glShaderSource(vertexShader, 1, &vertex_c_str, &vertex_length);
			glCompileShader(vertexShader);
			DumpShaderInfo(vertexShader);
			glAttachShader(program, vertexShader);
			glDeleteShader(vertexShader);
			// Fragment
			GLuint fragmentShader = glCreateShader(GL_FRAGMENT_SHADER);
			const char* fragment_c_str = fragment.c_str();
			int fragment_length = int(fragment.length());
			glShaderSource(fragmentShader, 1, &fragment_c_str, &fragment_length);
			glCompileShader(fragmentShader);
			DumpShaderInfo(fragmentShader);
			glAttachShader(program, fragmentShader);
			glDeleteShader(fragmentShader);
			// Linkage
			glLinkProgram(program);
			DumpShaderProgramInfo(program);
			glutReportErrors();
			return program;
		}

Code: Select all

const GLchar* SOURCE_FOR_VERTEX_SHADER= readFile("TriangleVertexShader.txt");
const GLchar* SOURCE_FOR_FRAGMENT_SHADER= readFile("TriangleFragmentShader.txt"); 
cout<<SOURCE_FOR_VERTEX_SHADER <<endl<< SOURCE_FOR_FRAGMENT_SHADER; //Why doesn't this....
cout<<endl;
cout<<readFile("TriangleVertexShader.txt")<<endl<<readFile("TriangleFragmentShader.txt");  //look identical to this?

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varying vec3 normal;
varying vec3 lightVector;
uniform mat4 modelViewMatrix;
uniform mat4 modelViewProjectionMatrix;
attribute vec3 vertexPosition;
void main()
{
   gl_Position = modelViewProjectionMatrix*vec4(vertexPosition,1.0f);
   normal=gl_NormalMatrix* gl_Normal;
   vec4  modelViewVertex=modelViewMatrix*vec4(vertexPosition,1.0f);
   lightVector= vec3(gl_LightSource[0].position -modelViewVertex);
 //I know I will probably need to replace "gl_LightSource[0]" later, but it was working fine with "gl_Vertex".
}

Code: Select all

//Vertex Shader
varying vec3 normal;
varying vec3 lightVector;
uniform mat4 modelViewMatrix;
uniform mat3 normalMatrix;
uniform mat4 modelViewProjectionMatrix;
attribute vec3 vertexPosition;
void main()
{
   vec4 vertex4=vec4(vertexPosition,1.0f);  
   gl_Position = modelViewProjectionMatrix*vertex4;
   vec3 normalVertex=normalize(vertexPosition);
   normalMatrix=normalize(normalMatrix);
   normal=normalMatrix* normalVertex;
   vec4  modelViewVertex=modelViewMatrix*vertex4;
   lightVector= vec3(gl_LightSource[0].position -modelViewVertex);
}