Evolution ShaderLoader Load

shaderloader.cpp

    // Once we get here, it's time to figure out which attributes and uniforms we have
    GLint activeAttribs = 0;
    GLint activeUniforms = 0;
    glGetProgramiv(p, GL_ACTIVE_ATTRIBUTES, &activeAttribs);
    glGetProgramiv(p, GL_ACTIVE_UNIFORMS, &activeUniforms);
    
    // Start with the uniform variables
    for(int i = 0; i < activeUniforms; i++) {
        int size = 0;
        int length = 0;
        unsigned int type = 0;
        
        char name[256];
        memset(name, 0, 256);
        
        // Get the name of the uniform from the program
        glGetActiveUniform(p, i, 256, &length, &size, &type, name);
        
        char* actual = (char*)malloc(length + 1);
        strcpy(actual, name);
        
        // Then tell the program to go get and store its location
        int location = program->uniform(actual);
        if(location < 0) {
            // problem
        }
    }
    
    // Then do the same for vertex attributes
    for(int i = 0; i < activeAttribs; i++) {
        int size = 0;
        int length = 0;
        unsigned int type = 0;
        
        char name[256];
        memset(name, 0, 256);
        
        // Get the name of the uniform from the program
        glGetActiveAttrib(p, i, 256, &length, &size, &type, name);
        
        // Then tell the program to go get and store its location
        program->attribute(name);
    }
    
    // If we make it here, we have successfully loaded our shader, store it as a resource
    Resource<ShaderProgram*>* resource = new Resource<ShaderProgram*>();
    resource->filename = (char*)malloc(strlen(shader) + 1);
    strcpy(resource->filename, shader);
    
    resource->resource = program;
    this->Add(resource);