private void SimpleOpenGlControl_OnInitScene(object sender, SimpleOpenGlEventArgs args)
{
var gl = args.OpenGl;
var vertices = new[]
{
new Vertex
{
Position = new Vector3 {
X = -1, Y = -1, Z = 0
},
Color = new Color3 {
R = 1, G = 0, B = 0
}
},
new Vertex
{
Position = new Vector3 {
X = -1, Y = 1, Z = 0
},
Color = new Color3 {
R = 0, G = 1, B = 0
}
},
new Vertex
{
Position = new Vector3 {
X = 1, Y = 1, Z = 0
},
Color = new Color3 {
R = 0, G = 0, B = 1
}
},
new Vertex
{
Position = new Vector3 {
X = 1, Y = -1, Z = 0
},
Color = new Color3 {
R = 1, G = 1, B = 0
}
}
};
var buf = MakeRaw(vertices);
var bufs = new uint[1];
gl.GenBuffers(1, bufs);
_bufferId = bufs[0];
gl.BindBuffer(OpenGL.GL_ARRAY_BUFFER, _bufferId);
gl.BufferData(OpenGL.GL_ARRAY_BUFFER, vertices.Length * Marshal.SizeOf <Vertex>(), buf, OpenGL.GL_STATIC_DRAW);
gl.VertexPointer(3, OpenGL.GL_FLOAT, Marshal.SizeOf <Vertex>(), IntPtr.Zero);
gl.ColorPointer(3, OpenGL.GL_FLOAT, Marshal.SizeOf <Vertex>(), IntPtr.Zero + Marshal.SizeOf <Vector3>());
gl.BindBuffer(OpenGL.GL_ARRAY_BUFFER, 0);
Marshal.FreeHGlobal(buf);
}
private void SimpleOpenGlControl_OnRenderScene(object sender, SimpleOpenGlEventArgs args)
{
var gl = args.OpenGl;
gl.LookAt(0, 0, -5, 0, 0, 0, 0, 1, 0);
gl.BindBuffer(OpenGL.GL_ARRAY_BUFFER, _bufferId);
gl.EnableClientState(OpenGL.GL_VERTEX_ARRAY);
gl.DrawArrays(OpenGL.GL_QUADS, 0, 4);
gl.DisableClientState(OpenGL.GL_VERTEX_ARRAY);
}
private void SimpleOpenGlControl_OnRenderScene(object sender, SimpleOpenGlEventArgs args)
{
var gl = args.OpenGl;
gl.LookAt(0, 0, -5, 0, 0, 0, 0, 1, 0);
gl.Begin(OpenGL.GL_QUADS);
gl.Color(1.0f, 0.0f, 0.0f);
gl.Vertex(-1.0f, -1.0f, 0.0f);
gl.Color(1.0f, 1.0f, 0.0f);
gl.Vertex(-1.0f, 1.0f, 0.0f);
gl.Color(1.0f, 0.0f, 1.0f);
gl.Vertex(1.0f, 1.0f, 0.0f);
gl.Color(0.0f, 1.0f, 1.0f);
gl.Vertex(1.0f, -1.0f, 0.0f);
gl.End();
}
private void SimpleOpenGlControl_OnInitScene(object sender, SimpleOpenGlEventArgs args)
{
var gl = args.OpenGl;
var vertexData = new[]
{
-1.0f, -1.0f, 0.0f,
-1.0f, 1.0f, 0.0f,
1.0f, 1.0f, 0.0f,
1.0f, -1.0f, 0.0f
};
var bufs = new uint[1];
gl.GenBuffers(1, bufs);
_bufferId = bufs[0];
gl.BindBuffer(OpenGL.GL_ARRAY_BUFFER, _bufferId);
gl.BufferData(OpenGL.GL_ARRAY_BUFFER, vertexData, OpenGL.GL_STATIC_DRAW);
gl.VertexPointer(3, OpenGL.GL_FLOAT, 0, IntPtr.Zero);
}
