Tonemap, Gbuffer fix.

src/plugins/pipeline/DepthBufferPlugin.ts

             this.target = this._viewer.renderManager.createTarget<DepthBufferPluginTarget>(
                 {
                     depthBuffer: true,
-                    samples: this._viewer.renderManager.composerTarget.samples || 0,
+                    samples: this._viewer.renderManager.zPrepass && this.isPrimaryGBuffer ? // requirement for zPrepass
+                        this._viewer.renderManager.composerTarget.samples || 0 : 0,
                     type: this.bufferType,
                     // magFilter: NearestFilter,
                     // minFilter: NearestFilter,

src/plugins/pipeline/GBufferPlugin.ts

 import {
     BufferGeometry,
     Camera,
+    ClampToEdgeWrapping,
     Color,
     DepthTexture,
     DoubleSide,
             this.target = this._viewer.renderManager.createTarget<GBufferPluginTarget>(
                 {
                     depthBuffer: true,
-                    samples: this._viewer.renderManager.composerTarget.samples || 0,
+                    samples: this._viewer.renderManager.zPrepass && this.isPrimaryGBuffer ? // requirement for zPrepass
+                        this._viewer.renderManager.composerTarget.samples || 0 : 0,
                     type: this.bufferType,
                     textureCount: useMultiple ? 2 : 1,
                     depthTexture: this.renderDepthTexture,
                     // minFilter: NearestFilter,
                     // generateMipmaps: false,
                     // encoding: LinearEncoding,
+                    wrapS: ClampToEdgeWrapping,
+                    wrapT: ClampToEdgeWrapping,
                 })
             if (Array.isArray(this.target.texture)) {
                 this.target.texture[0].name = 'gbufferDepthNormal'

src/plugins/postprocessing/shaders/TonemapPlugin.patch.glsl

 bool doTonemap = true;
 #ifdef HAS_GBUFFER
+#ifdef GBUFFER_HAS_FLAGS
 doTonemap = getToneMapBit(getGBufferFlags(vUv).a) > 0;
+#endif
 #if TONEMAP_BACKGROUND < 1
-if(isBackground) doTonemap = false;
+if(isBackground) doTonemap = false; // isBackground defined in ScreenPass
 #endif
 #endif
 if(doTonemap) diffuseColor = ToneMapping(diffuseColor);