= DepthFormat ) { if ( useMultisampledRTT( renderTarget ) ) { multisampledRTTExt.framebufferTexture2DMultisampleEXT( _gl.FRAMEBUFFER, glAttachmentType, glTextureType, webglDepthTexture, 0, samples ); } else { _gl.framebufferTexture2D( _gl.FRAMEBUFFER, glAttachmentType, glTextureType, webglDepthTexture, 0 ); } } else if ( renderTarget.depthTexture.format === DepthStencilFormat ) { if ( useMultisampledRTT( renderTarget ) ) { multisampledRTTExt.framebufferTexture2DMultisampleEXT( _gl.FRAMEBUFFER, glAttachmentType, glTextureType, webglDepthTexture, 0, samples ); } else { _gl.framebufferTexture2D( _gl.FRAMEBUFFER, glAttachmentType, glTextureType, webglDepthTexture, 0 ); } } else { throw new Error( 'THREE.WebGLTextures: Unknown depthTexture format.' ); } } // Setup GL resources for a non-texture depth buffer function setupDepthRenderbuffer( renderTarget ) { const renderTargetProperties = properties.get( renderTarget ); const isCube = ( renderTarget.isWebGLCubeRenderTarget === true ); // if the bound depth texture has changed if ( renderTargetProperties.__boundDepthTexture !== renderTarget.depthTexture ) { // fire the dispose event to get rid of stored state associated with the previously bound depth buffer const depthTexture = renderTarget.depthTexture; if ( renderTargetProperties.__depthDisposeCallback ) { renderTargetProperties.__depthDisposeCallback(); } // set up dispose listeners to track when the currently attached buffer is implicitly unbound if ( depthTexture ) { const disposeEvent = () => { delete renderTargetProperties.__boundDepthTexture; delete renderTargetProperties.__depthDisposeCallback; depthTexture.removeEventListener( 'dispose', disposeEvent ); }; depthTexture.addEventListener( 'dispose', disposeEvent ); renderTargetProperties.__depthDisposeCallback = disposeEvent; } renderTargetProperties.__boundDepthTexture = depthTexture; } if ( renderTarget.depthTexture && ! renderTargetProperties.__autoAllocateDepthBuffer ) { if ( isCube ) { // For cube render targets with depth texture, setup each face for ( let i = 0; i < 6; i ++ ) { setupDepthTexture( renderTargetProperties.__webglFramebuffer[ i ], renderTarget, i ); } } else { const mipmaps = renderTarget.texture.mipmaps; if ( mipmaps && mipmaps.length > 0 ) { setupDepthTexture( renderTargetProperties.__webglFramebuffer[ 0 ], renderTarget, 0 ); } else { setupDepthTexture( renderTargetProperties.__webglFramebuffer, renderTarget, 0 ); } } } else { if ( isCube ) { renderTargetProperties.__webglDepthbuffer = []; for ( let i = 0; i < 6; i ++ ) { state.bindFramebuffer( _gl.FRAMEBUFFER, renderTargetProperties.__webglFramebuffer[ i ] ); if ( renderTargetProperties.__webglDepthbuffer[ i ] === undefined ) { renderTargetProperties.__webglDepthbuffer[ i ] = _gl.createRenderbuffer(); setupRenderBufferStorage( renderTargetProperties.__webglDepthbuffer[ i ], renderTarget, false ); } else { // attach buffer if it's been created already const glAttachmentType = renderTarget.stencilBuffer ? _gl.DEPTH_STENCIL_ATTACHMENT : _gl.DEPTH_ATTACHMENT; const renderbuffer = renderTargetProperties.__webglDepthbuffer[ i ]; _gl.bindRenderbuffer( _gl.RENDERBUFFER, renderbuffer ); _gl.framebufferRenderbuffer( _gl.FRAMEBUFFER, glAttachmentType, _gl.RENDERBUFFER, renderbuffer ); } } } else { const mipmaps = renderTarget.texture.mipmaps; if ( mipmaps && mipmaps.length > 0 ) { state.bindFramebuffer( _gl.FRAMEBUFFER, renderTargetProperties.__webglFramebuffer[ 0 ] ); } else { state.bindFramebuffer( _gl.FRAMEBUFFER, renderTargetProperties.__webglFramebuffer ); } if ( renderTargetProperties.__webglDepthbuffer === undefined ) { renderTargetProperties.__webglDepthbuffer = _gl.createRenderbuffer(); setupRenderBufferStorage( renderTargetProperties.__webglDepthbuffer, renderTarget, false ); } else { // attach buffer if it's been created already const glAttachmentType = renderTarget.stencilBuffer ? _gl.DEPTH_STENCIL_ATTACHMENT : _gl.DEPTH_ATTACHMENT; const renderbuffer = renderTargetProperties.__webglDepthbuffer; _gl.bindRenderbuffer( _gl.RENDERBUFFER, renderbuffer ); _gl.framebufferRenderbuffer( _gl.FRAMEBUFFER, glAttachmentType, _gl.RENDERBUFFER, renderbuffer ); } } } state.bindFramebuffer( _gl.FRAMEBUFFER, null ); } // rebind framebuffer with external textures function rebindTextures( renderTarget, colorTexture, depthTexture ) { const renderTargetProperties = properties.get( renderTarget ); if ( colorTexture !== undefined ) { setupFrameBufferTexture( renderTargetProperties.__webglFramebuffer, renderTarget, renderTarget.texture, _gl.COLOR_