public MyPointSpriteShaderProgram()
{
_handle = ShaderTools.CreateShaderProgramFromRes("content.shader.vert", "content.shader.frag", "content.shader.geom");
_locTime = GL.GetUniformLocation(_handle, "time");
_locPointSize = GL.GetUniformLocation(_handle, "pointSize");
LocationPosition = GL.GetAttribLocation(_handle, "position");
LocationVelocity = GL.GetAttribLocation(_handle, "velocity");
}
public MyCameraShaderProgram()
{
_handle = ShaderTools.CreateShaderProgramFromResource("content.shader.vert", "content.shader.frag");
LocationModelViewProjection = GL.GetUniformLocation(_handle, "modelViewProjection");
LocationInstancePosition = GL.GetAttribLocation(_handle, "instancePosition");
LocationPosition = GL.GetAttribLocation(_handle, "position");
LocationNormal = GL.GetAttribLocation(_handle, "normal");
LocationTexCoord = GL.GetAttribLocation(_handle, "texCoord");
}
private static void Main()
{
var window = new GameWindow(512, 512); // window with size 512x512 pixel
var shaderProgram = ShaderTools.CreateShaderProgram(vertexShaderSource, fragmentShaderSource);
void Draw(object sender, FrameEventArgs args)
{
//clear screen - what happens without?
GL.Clear(ClearBufferMask.ColorBufferBit);
GL.UseProgram(shaderProgram);
GL.DrawArrays(PrimitiveType.Quads, 0, 4);
window.SwapBuffers(); // buffer swap needed for double buffering
}
window.RenderFrame += Draw; // called once each frame; callback should contain drawing code
window.Run();
GL.DeleteProgram(shaderProgram);
}