void TheMaze2::initShaders() {
GLuint vertex_shader = shaderFromFile("shaders/vertex.glsl", GL_VERTEX_SHADER);
GLuint frag_shader = shaderFromFile("shaders/fragment.glsl", GL_FRAGMENT_SHADER);
if (vertex_shader == 0 || frag_shader == 0) {
// TODO: thow something meaningful
throw "shader error";
}
shader_prog_ = glCreateProgram();
glAttachShader(shader_prog_, vertex_shader);
glAttachShader(shader_prog_, frag_shader);
glBindFragDataLocation(shader_prog_, 0, "out_color");
glLinkProgram(shader_prog_);
glUseProgram(shader_prog_);
}
Shader* ContentManager::loadShader( const char* vertPath, const char* fragShader )
{
Shader* result;
std::string s = std::string(vertPath).append( fragShader );
// check if key is present
if (shaders.find(s) != shaders.end())
result = shaders[s];
else
{
result = Shader::nextFreeShader();
result->shaderProgramID = shaderFromFile( vertPath, fragShader );
shaders[s] = result;
}
return result;
}
