Merge pull request #234 from mutantdeveloper/support-texture-array

Support texture-array in projection layer sample

Author: cabanier

js/render/scenes/scene.js

@@ -246,8 +246,27 @@ export class Scene extends Node {
       xrlayer = layer ? layer : session.renderState.layers[0];
       gl.bindFramebuffer(gl.FRAMEBUFFER, renderer.xrFramebuffer);
 
+      // We need to do something different with texture-array.
+      if (xrlayer.usingTextureArray ?? false) {
+        var viewIndex = 0;
+        for (let view of pose.views) {
+          let glLayer = renderer.getXrBinding(session).getViewSubImage(xrlayer, view);
+          gl.framebufferTextureLayer(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, glLayer.colorTexture, 0, viewIndex);
+          gl.framebufferTextureLayer(gl.FRAMEBUFFER, gl.DEPTH_ATTACHMENT, glLayer.depthStencilTexture, 0, viewIndex);
+
+          views = [new WebXRView(view, glLayer, glLayer.viewport)];
+          if (this.clear) {
+            gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
+          }
+          this.drawViewArray(views, depthData);
+
+          ++viewIndex;
+        }
+        return;
+      }
+
       for (let view of pose.views) {
-        let glLayer = renderer.getXrBinding(session).getViewSubImage(xrlayer, view);  
+        let glLayer = renderer.getXrBinding(session).getViewSubImage(xrlayer, view);
 
         if (view == pose.views[0]) {
           if (renderer.multisampledMultiview) {

layers-samples/proj-layer.html

@@ -155,6 +155,8 @@
         proj_layer = xrGLFactory.createProjectionLayer({
           textureType: usingTextureArray ? 'texture-array' : 'texture',
           space: refSpace, stencil: false });
+        // Add a custom attribute to the layer.
+        proj_layer.usingTextureArray = usingTextureArray;
         session.updateRenderState({ layers: [proj_layer] });
 
         session.requestAnimationFrame(onXRFrame);