protected override void OnLoad(EventArgs e)
{
base.OnLoad (e);
Context.ErrorChecking = true;
String version = GL.GetString(StringName.Version);
Console.WriteLine("GL version: " + version);
context = GLGraphics.NewContext(Context, true);
program = context.NewProgramFromFiles("Render.vert", "Render.frag");
texture0 = context.NewTexture(TextureMinFilter.Nearest, TextureMagFilter.Nearest, TextureWrapMode.Clamp, TextureWrapMode.Clamp);
texture0.UploadImage(sourceImage);
sourceImage.Dispose();
texture1 = context.NewTexture(TextureMinFilter.Nearest, TextureMagFilter.Nearest, TextureWrapMode.Clamp, TextureWrapMode.Clamp);
texture1.UploadImage(new byte[4 * 4 * 4], 4, 4, PixelInternalFormat.Four, PixelFormat.Rgba, PixelType.UnsignedByte);
CreateAndFillBuffers();
paramSpec = ImmutableList<Tuple<String, Object>>.List(new Tuple<String, Object>[] {
Tuple.Create<String, Object>("a_position", positions),
Tuple.Create<String, Object>("a_texPos", textureCoords),
Tuple.Create<String, Object>("u_texture0", texture0),
Tuple.Create<String, Object>("u_texture1", texture1)});
rc = context.NewRenderBuffer(1000, 1000, RenderbufferStorage.Rgb8);
rd = context.NewRenderBuffer(1000, 1000, RenderbufferStorage.DepthComponent24);
fb = context.NewFrameBuffer(rc, rd, FramebufferTarget.Framebuffer);
}
internal GLFrameBuffer(GLRenderBuffer colorBuffer, GLRenderBuffer depthBuffer, FramebufferTarget fbTarget, bool disposeRenderBuffers, GLGraphicsContext context)
: this(context)
{
this.disposeRenderBuffers = disposeRenderBuffers;
this.colorBuffer = colorBuffer;
this.depthBuffer = depthBuffer;
this.fbTarget = fbTarget;
OGL.BindFramebuffer(fbTarget, fboId);
OGL.FramebufferRenderbuffer(fbTarget, FramebufferAttachment.ColorAttachment0,
RenderbufferTarget.Renderbuffer, colorBuffer.Id);
OGL.FramebufferRenderbuffer(fbTarget, FramebufferAttachment.DepthAttachment,
RenderbufferTarget.Renderbuffer, depthBuffer.Id);
FramebufferErrorCode err = OGL.CheckFramebufferStatus(fbTarget);
switch(err) {
case FramebufferErrorCode.FramebufferComplete:
break;
default:
this.Dispose();
throw new Exception(String.Format("Invalid frame buffer status: {0}", err));
}
OGL.BindFramebuffer(fbTarget, 0);
context.CheckForErrorsIfDebugging();
}