| public Bind ( FramebufferTarget target = FramebufferTarget.Framebuffer ) : void | ||
| target | FramebufferTarget | |
| return | void | |
private Framebuffer CreateFramebuffer(int width, int height)
{
var texture = new Texture(TextureTarget.Texture2D,
new NullImageFiller(width, height, GL.GL_RGBA, GL.GL_RGBA, GL.GL_UNSIGNED_BYTE),
new SamplerParameters(
TextureWrapping.Repeat,
TextureWrapping.Repeat,
TextureWrapping.Repeat,
TextureFilter.Linear,
TextureFilter.Linear));
texture.Initialize();
this.BindingTexture = texture;
Renderbuffer colorBuffer = Renderbuffer.CreateColorbuffer(width, height, GL.GL_RGBA);
Renderbuffer depthBuffer = Renderbuffer.CreateDepthbuffer(width, height, DepthComponentType.DepthComponent24);
var framebuffer = new Framebuffer();
framebuffer.Bind();
framebuffer.Attach(colorBuffer); //0
framebuffer.Attach(texture); //1
framebuffer.Attach(depthBuffer); // special
framebuffer.SetDrawBuffers(GL.GL_COLOR_ATTACHMENT0 + 1); // as in 1 in framebuffer.Attach(texture);//1
framebuffer.CheckCompleteness();
framebuffer.Unbind();
return(framebuffer);
}
/// <summary>
/// Pick geometry at specified positon.
/// </summary>
/// <param name="x"></param>
/// <param name="y"></param>
/// <param name="geometryTypes"></param>
/// <param name="width"></param>
/// <param name="height"></param>
/// <returns></returns>
public PickedGeometry Pick(int x, int y, PickingGeometryTypes geometryTypes, int width, int height)
{
if (x < 0 || width <= x)
{
return(null);
}
if (y < 0 || height <= y)
{
return(null);
}
if (geometryTypes == 0)
{
return(null);
}
PickedGeometry pickedGeometry = null;
Framebuffer framebuffer = GetPickingFramebuffer(width, height);
framebuffer.Bind();
{
const float one = 1.0f;
GL.Instance.ClearColor(one, one, one, one);
GL.Instance.Clear(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT | GL.GL_STENCIL_BUFFER_BIT);
var arg = new PickingEventArgs(this.Scene, x, y, geometryTypes);
this.RenderForPicking(this.Scene.RootNode, arg);
bool dump = false;
if (dump)
{
var final = new Bitmap(width, height);
var data = final.LockBits(new Rectangle(0, 0, width, height), System.Drawing.Imaging.ImageLockMode.ReadWrite, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
//glGetTexImage((uint)texture.Target, 0, GL_BGRA, GL_UNSIGNED_BYTE, data.Scan0);
GL.Instance.ReadPixels(0, 0, width, height, GL.GL_BGRA, GL.GL_UNSIGNED_BYTE, data.Scan0);
final.UnlockBits(data);
final.RotateFlip(RotateFlipType.Rotate180FlipX);
final.Save(string.Format("picking.dump.png"));
}
uint stageVertexId = ColorCodedPicking.ReadStageVertexId(x, y);
pickedGeometry = SearchGeometry(stageVertexId, arg, this.Scene.RootNode);
if (pickedGeometry != null)
{
var depth = new float[1];
GCHandle pinned = GCHandle.Alloc(depth, GCHandleType.Pinned);
IntPtr header = pinned.AddrOfPinnedObject();
// same with: IntPtr header = Marshal.UnsafeAddrOfPinnedArrayElement(array, 0);
GL.Instance.ReadPixels(x, y, 1, 1, GL.GL_DEPTH_COMPONENT, GL.GL_FLOAT, header);
pinned.Free();
pickedGeometry.PickedPosition = new vec3(x, y, depth[0]);
}
}
framebuffer.Unbind();
return(pickedGeometry);
}
/// <summary>
/// A render context.
/// </summary>
/// <param name="width"></param>
/// <param name="height"></param>
/// <param name="parameters"></param>
/// <returns></returns>
public FBORenderContext(int width, int height, ContextGenerationParams parameters)
: base(width, height, parameters)
{
Framebuffer framebuffer = CreateFramebuffer(width, height, parameters);
framebuffer.Bind();
this.framebuffer = framebuffer;
}
/// <summary>
/// Creates the render context provider. Must also create the OpenGL extensions.
/// </summary>
/// <param name="width"></param>
/// <param name="height"></param>
/// <param name="bitDepth"></param>
/// <returns></returns>
public FBORenderContext(int width, int height, short bitDepth)
: base(width, height, bitDepth)
{
Framebuffer framebuffer = CreateFramebuffer(width, height);
framebuffer.Bind();
this.framebuffer = framebuffer;
this.dibSection = new DIBSection(this.DeviceContextHandle, width, height, bitDepth);
}
private Framebuffer CreatePickFramebuffer(int width, int height)
{
var framebuffer = new Framebuffer(width, height);
framebuffer.Bind();
framebuffer.Attach(RenderbufferType.ColorBuffer);
framebuffer.Attach(RenderbufferType.DepthBuffer);
framebuffer.CheckCompleteness();
framebuffer.Unbind();
return(framebuffer);
}
private Framebuffer CreatePickFramebuffer(int width, int height)
{
Renderbuffer colorBuffer = Renderbuffer.CreateColorbuffer(width, height, GL.GL_RGBA);
Renderbuffer depthBuffer = Renderbuffer.CreateDepthbuffer(width, height, DepthComponentType.DepthComponent24);
var framebuffer = new Framebuffer();
framebuffer.Bind();
framebuffer.Attach(colorBuffer);
framebuffer.Attach(depthBuffer);
framebuffer.CheckCompleteness();
framebuffer.Unbind();
return(framebuffer);
}
private Framebuffer CreateFramebuffer(int width, int height)
{
var framebuffer = new Framebuffer(width, height);
framebuffer.Bind();
Renderbuffer colorbuffer = framebuffer.Attach(RenderbufferType.ColorBuffer); //0
Texture texture = framebuffer.Attach(TextureAttachment.ColorAttachment); //1
Renderbuffer depthbuffer = framebuffer.Attach(RenderbufferType.DepthBuffer); // special
framebuffer.SetDrawBuffer(GL.GL_COLOR_ATTACHMENT0 + 1); // as in 1 in framebuffer.Attach(TextureAttachment.ColorAttachment);//1
framebuffer.CheckCompleteness();
framebuffer.Unbind();
this.BindingTexture = texture;
return(framebuffer);
}
private static Framebuffer CreateFramebuffer(int width, int height)
{
var framebuffer = new Framebuffer(width, height);
framebuffer.Bind();
{
var renderbuffer = new Renderbuffer(width, height, GL.GL_RGBA, RenderbufferType.ColorBuffer);
framebuffer.Attach(FramebufferTarget.Framebuffer, renderbuffer, 0u);// 0
}
{
var renderbuffer = new Renderbuffer(width, height, GL.GL_DEPTH_COMPONENT24, RenderbufferType.DepthBuffer);
framebuffer.Attach(FramebufferTarget.Framebuffer, renderbuffer, AttachmentLocation.Depth);// special
}
framebuffer.CheckCompleteness();
framebuffer.Unbind();
return framebuffer;
}
/// <summary>
///
/// </summary>
/// <param name="width"></param>
/// <param name="height"></param>
/// <param name="parameters"></param>
public override void SetDimensions(int width, int height)
{
// Call the base.
base.SetDimensions(width, height);
// TODO: We should be able to just use the code below - however we
// get invalid dimension issues at the moment, so recreate for now.
//// Resize the render buffer storage.
//this.framebuffer.Resize(width, height);
this.framebuffer.Unbind();
this.framebuffer.Dispose();
Framebuffer framebuffer = CreateFramebuffer(width, height, this.Parameters);
framebuffer.Bind();
this.framebuffer = framebuffer;
}
/// <summary>
/// Creates the render context provider. Must also create the OpenGL extensions.
/// </summary>
/// <param name="width"></param>
/// <param name="height"></param>
/// <param name="bitDepth"></param>
/// <param name="parameter"></param>
/// <returns></returns>
public override bool Create(int width, int height, int bitDepth, object parameter)
{
// Call the base class.
base.Create(width, height, bitDepth, parameter);
// Create frame buffer object.
Framebuffer framebuffer = CreateFramebuffer(width, height);
framebuffer.Bind();
this.framebuffer = framebuffer;
// Create the DIB section.
var dibSection = new DIBSection();
dibSection.Create(this.DeviceContextHandle, width, height, bitDepth);
this.dibSection = dibSection;
return(true);
}
/// <summary>
/// Pick geometry at specified positon.
/// </summary>
/// <param name="x"></param>
/// <param name="y"></param>
/// <param name="pickTriangle"></param>
/// <param name="pickQuad"></param>
/// <param name="pickPolygon"></param>
/// <returns></returns>
public PickedGeometry Pick(int x, int y, bool pickTriangle, bool pickQuad, bool pickPolygon)
{
PickingGeometryTypes geometryTypes = 0;
if (pickTriangle)
{
geometryTypes |= PickingGeometryTypes.Triangle;
}
if (pickQuad)
{
geometryTypes |= PickingGeometryTypes.Quad;
}
if (pickPolygon)
{
geometryTypes |= PickingGeometryTypes.Polygon;
}
if (geometryTypes == 0)
{
return(null);
}
PickedGeometry pickedGeometry = null;
Framebuffer framebuffer = GetPickingFramebuffer();
framebuffer.Bind();
{
const float one = 1.0f;
GL.Instance.ClearColor(one, one, one, one);
GL.Instance.Clear(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT | GL.GL_STENCIL_BUFFER_BIT);
var arg = new PickingEventArgs(this.Scene, x, y, geometryTypes);
this.RenderForPicking(this.Scene.RootElement, arg);
uint stageVertexId = ColorCodedPicking.ReadStageVertexId(x, y);
pickedGeometry = Pick(stageVertexId, arg, this.Scene.RootElement);
}
framebuffer.Unbind();
return(pickedGeometry);
}
private Framebuffer CreateFramebuffer(int width, int height)
{
//Renderbuffer colorBuffer = Renderbuffer.CreateColorbuffer(width, height, GL.GL_RGBA);
//Renderbuffer depthBuffer = Renderbuffer.CreateDepthbuffer(width, height, DepthComponentType.DepthComponent24);
var framebuffer = new Framebuffer(width, height);
framebuffer.Bind();
//framebuffer.Attach(colorBuffer);//0
this.BindingTexture = framebuffer.Attach(TextureAttachment.DepthAttachment);//1
//framebuffer.Attach(depthBuffer);// special
//framebuffer.SetDrawBuffers(GL.GL_COLOR_ATTACHMENT0 + 1);// as in 1 in framebuffer.Attach(texture);//1
//framebuffer.SetDrawBuffers(GL.GL_NONE);
framebuffer.SetDrawBuffer(GL.GL_NONE);
//framebuffer.SetReadBuffer(GL.GL_NONE);
this.BindingTexture.Bind();
framebuffer.CheckCompleteness();
this.BindingTexture.Unbind();
framebuffer.Unbind();
return(framebuffer);
}
private static Framebuffer CreateFramebuffer(int width, int height, ContextGenerationParams parameters)
{
var framebuffer = new Framebuffer(width, height);
framebuffer.Bind();
{
var renderbuffer = new Renderbuffer(width, height, GL.GL_RGBA);
uint colorAttachmentLocation = 0;
framebuffer.Attach(FramebufferTarget.Framebuffer, renderbuffer, colorAttachmentLocation);// 0
}
{
var renderbuffer = new Renderbuffer(width, height, GL.GL_DEPTH_COMPONENT24);
framebuffer.Attach(FramebufferTarget.Framebuffer, renderbuffer, AttachmentLocation.Depth);// special
}
if (parameters.StencilBits > 0)
{
var renderbuffer = new Renderbuffer(width, height, GL.GL_STENCIL_INDEX8);
framebuffer.Attach(FramebufferTarget.Framebuffer, renderbuffer, AttachmentLocation.Stencil);
}
framebuffer.CheckCompleteness();
framebuffer.Unbind();
return(framebuffer);
}
private static Framebuffer CreateFramebuffer(int width, int height)
{
Renderbuffer colorBuffer = Renderbuffer.CreateColorbuffer(width, height, OpenGL.GL_RGBA);
Renderbuffer depthBuffer = Renderbuffer.CreateDepthbuffer(width, height, DepthComponentType.DepthComponent24);
var framebuffer = new Framebuffer();
framebuffer.Bind();
framebuffer.Attach(colorBuffer);
framebuffer.Attach(depthBuffer);
framebuffer.CheckCompleteness();
return framebuffer;
}
