///<summary>
/// This function acts very similar to <see cref="GLES2FBORenderTexture.AttachDepthBuffer">The difference between D3D & OGL is that D3D setups the DepthBuffer before rendering,
/// while OGL setups the DepthBuffer per FBO. So the DepthBuffer (RenderBuffer) needs to
/// be attached for OGL.
///</summary>
///<param name="depthBuffer"> </param>
public void AttachDepthBuffer(DepthBuffer depthBuffer)
{
var glDepthBuffer = depthBuffer as GLES2DepthBuffer;
GL.BindFramebuffer(GLenum.Framebuffer, this._multiSampleFB > 0 ? this._multiSampleFB : this._fb);
GLES2Config.GlCheckError(this);
if (glDepthBuffer != null)
{
GLES2RenderBuffer depthBuf = glDepthBuffer.DepthBuffer;
GLES2RenderBuffer stencilBuf = glDepthBuffer.StencilBuffer;
//Attach depth buffer, if it has one.
if (depthBuf != null)
{
depthBuf.BindToFramebuffer(GLenum.DepthAttachment, 0);
}
//Attach stencil buffer, if it has one.
if (stencilBuf != null)
{
stencilBuf.BindToFramebuffer(GLenum.StencilAttachment, 0);
}
}
else
{
GL.FramebufferRenderbuffer(GLenum.Framebuffer, GLenum.DepthAttachment, GLenum.Renderbuffer, 0);
GLES2Config.GlCheckError(this);
GL.FramebufferRenderbuffer(GLenum.Framebuffer, GLenum.StencilAttachment, GLenum.Renderbuffer, 0);
GLES2Config.GlCheckError(this);
}
}
public GLES2SurfaceDesc RequestRenderBuffer(GLenum format, int width, int height, int fsaa)
{
var retVal = new GLES2SurfaceDesc();
retVal.buffer = null;
if (format != GLenum.None)
{
var key = new RBFormat(format, width, height, fsaa);
if (this.renderBufferMap.ContainsKey(key))
{
retVal.buffer = this.renderBufferMap[key].buffer;
retVal.zoffset = 0;
retVal.numSamples = fsaa;
}
else
{
//New one
var rb = new GLES2RenderBuffer(format, width, height, fsaa);
this.renderBufferMap.Add(key, new RBRef(rb));
retVal.buffer = rb;
retVal.zoffset = 0;
retVal.numSamples = fsaa;
}
}
return(retVal);
}
/// <summary>
/// </summary>
/// <param name="poolId"> </param>
/// <param name="renderSystem"> </param>
/// <param name="creatorContext"> </param>
/// <param name="depth"> </param>
/// <param name="stencil"> </param>
/// <param name="width"> </param>
/// <param name="height"> </param>
/// <param name="fsaa"> </param>
/// <param name="multiSampleQuality"> </param>
/// <param name="isManual"> </param>
public GLES2DepthBuffer(PoolId poolId, GLES2RenderSystem renderSystem, GLES2Context creatorContext, GLES2RenderBuffer depth, GLES2RenderBuffer stencil, int width, int height, int fsaa, int multiSampleQuality, bool isManual)
: base(poolId, 0, width, height, fsaa, "", isManual)
{
this._creatorContext = creatorContext;
this._multiSampleQuality = multiSampleQuality;
this._depthBuffer = depth;
this._stencilBuffer = stencil;
this._renderSystem = renderSystem;
if (this._depthBuffer != null)
{
switch (this._depthBuffer.GLFormat)
{
case OpenTK.Graphics.ES20.All.DepthComponent16:
bitDepth = 16;
break;
case GLenum.DepthComponent24Oes:
case GLenum.DepthComponent32Oes:
case GLenum.Depth24Stencil8Oes: //Packed depth / stencil
bitDepth = 32;
break;
}
}
}
protected override void dispose(bool disposeManagedResources)
{
if (this._stencilBuffer != null && this._stencilBuffer != this._depthBuffer)
{
this._stencilBuffer.Dispose();
this._stencilBuffer = null;
}
if (this._depthBuffer == null)
{
this._depthBuffer.Dispose();
this._depthBuffer = null;
}
base.dispose(disposeManagedResources);
}
/// <summary>
/// </summary>
/// <param name="poolId"> </param>
/// <param name="renderSystem"> </param>
/// <param name="creatorContext"> </param>
/// <param name="depth"> </param>
/// <param name="stencil"> </param>
/// <param name="width"> </param>
/// <param name="height"> </param>
/// <param name="fsaa"> </param>
/// <param name="multiSampleQuality"> </param>
/// <param name="isManual"> </param>
public GLES2DepthBuffer( PoolId poolId, GLES2RenderSystem renderSystem, GLES2Context creatorContext, GLES2RenderBuffer depth, GLES2RenderBuffer stencil, int width, int height, int fsaa, int multiSampleQuality, bool isManual )
: base( poolId, 0, width, height, fsaa, "", isManual )
{
this._creatorContext = creatorContext;
this._multiSampleQuality = multiSampleQuality;
this._depthBuffer = depth;
this._stencilBuffer = stencil;
this._renderSystem = renderSystem;
if ( this._depthBuffer != null )
{
switch ( this._depthBuffer.GLFormat )
{
case OpenTK.Graphics.ES20.All.DepthComponent16:
bitDepth = 16;
break;
case GLenum.DepthComponent24Oes:
case GLenum.DepthComponent32Oes:
case GLenum.Depth24Stencil8Oes: //Packed depth / stencil
bitDepth = 32;
break;
}
}
}
public DepthBuffer CreateDepthBufferFor( RenderTarget renderTarget )
{
GLES2DepthBuffer retVal = null;
//Only FBO & ppbuffer support different depth buffers, so everything
//else creates dummy (empty containers
GLES2FrameBufferObject fbo = null;
fbo = (GLES2FrameBufferObject) renderTarget[ "FBO" ];
if ( fbo != null )
{
// Presence of an FBO means the manager is an FBO Manager, that's why it's safe to downcast
// Find best depth & stencil format suited for the RT's format
GLenum depthFormat = GLenum.None, stencilFormat = GLenum.None;
( this.rttManager as GLES2FBOManager ).GetBestDepthStencil( fbo.Format, ref depthFormat, ref stencilFormat );
var depthBuffer = new GLES2RenderBuffer( depthFormat, fbo.Width, fbo.Height, fbo.FSAA );
GLES2RenderBuffer stencilBuffer = depthBuffer;
if ( stencilBuffer != null )
{
stencilBuffer = new GLES2RenderBuffer( stencilFormat, fbo.Width, fbo.Height, fbo.FSAA );
}
//No "custom-quality" multisample for now in GL
retVal = new GLES2DepthBuffer( 0, this, this.currentContext, depthBuffer, stencilBuffer, fbo.Width, fbo.Height, fbo.FSAA, 0, false );
}
return retVal;
}
public RBRef(GLES2RenderBuffer buffer)
{
this.buffer = buffer;
this.refCount = 1;
}
public RBRef(GLES2RenderBuffer buffer, int refCount)
{
this.buffer = buffer;
this.refCount = refCount;
}
public GLES2SurfaceDesc RequestRenderBuffer( GLenum format, int width, int height, int fsaa )
{
var retVal = new GLES2SurfaceDesc();
retVal.buffer = null;
if ( format != GLenum.None )
{
var key = new RBFormat( format, width, height, fsaa );
if ( this.renderBufferMap.ContainsKey( key ) )
{
retVal.buffer = this.renderBufferMap[ key ].buffer;
retVal.zoffset = 0;
retVal.numSamples = fsaa;
}
else
{
//New one
var rb = new GLES2RenderBuffer( format, width, height, fsaa );
this.renderBufferMap.Add( key, new RBRef( rb ) );
retVal.buffer = rb;
retVal.zoffset = 0;
retVal.numSamples = fsaa;
}
}
return retVal;
}
public RBRef( GLES2RenderBuffer buffer )
{
this.buffer = buffer;
this.refCount = 1;
}
public RBRef( GLES2RenderBuffer buffer, int refCount )
{
this.buffer = buffer;
this.refCount = refCount;
}
protected override void dispose( bool disposeManagedResources )
{
if ( this._stencilBuffer != null && this._stencilBuffer != this._depthBuffer )
{
this._stencilBuffer.Dispose();
this._stencilBuffer = null;
}
if ( this._depthBuffer == null )
{
this._depthBuffer.Dispose();
this._depthBuffer = null;
}
base.dispose( disposeManagedResources );
}
