public void Render(RenderingContext rc)
{
CurrentShader.Use();
CurrentShader.SetFieldValue("scale", scale);
CurrentShader.SetFieldValue("size", size);
var identity = Matrix4.Identity;
CurrentShader.SetFieldValue("modelview", ref identity);
GL.Enable(EnableCap.Texture2D);
GL.DepthMask(false);
GL.BindTexture(TextureTarget.Texture2D, _crosshair.Index);
GL.BindBuffer(BufferTarget.ArrayBuffer, vbo);
Buffering.ApplyBufferPointers(CurrentShader);
GL.DrawArrays(PrimitiveType.Quads, 0, NumVerticies);
GL.DepthMask(true);
GL.BindTexture(TextureTarget.Texture2D, 0);
}
public Bitmap GenerateHeightMap(RenderingContext rc)
{
GL.BindTexture(TextureTarget.Texture2D, 0);
Bitmap b = TakeRenderingContextScreenshot(0, 0, 800, 600, () =>
{
GL.Enable(EnableCap.Texture2D);
Vector3 size = new Vector3(1, 1, 1);
Vector3 scale = new Vector3(1, 1, 1);
//GL.BlendFunc(BlendingFactorSrc.SrcAlpha, BlendingFactorDest.OneMinusSrcAlpha);
CurrentShader.Use();
CurrentShader.SetFieldValue("scale", scale);
CurrentShader.SetFieldValue("size", size);
CurrentShader.SetFieldValue("seed", (float)seed.NextDouble()); // (float)rc.Time * 0.001f
var identity = Matrix4.Identity;
CurrentShader.SetFieldValue("modelview", ref identity);
GL.DepthMask(false);
GL.BindBuffer(BufferTarget.ArrayBuffer, vbo);
Buffering.ApplyBufferPointers(CurrentShader);
GL.DrawArrays(PrimitiveType.Quads, 0, NumVerticies);
GL.DepthMask(true);
});
GL.BindTexture(TextureTarget.Texture2D, 0);
GL.UseProgram(0);
this.Image = b;
return b;
}