Require depthOrArrayLayers=1 and mipLevelCount=1 for transient textures (#4533)

* Require depthOrArrayLayers=1 and mipLevelCount=1 for transient textures

* Add dedicated test

* Do not test all texture formats

Author: beaufortfrancois

src/webgpu/api/validation/createTexture.spec.ts

@@ -333,7 +333,7 @@ g.test('sampleCount,valid_sampleCount_with_other_parameter_varies')
       .filter(({ dimension, format }) =>
         textureFormatAndDimensionPossiblyCompatible(dimension, format)
       )
-      .unless(({ usage, format, mipLevelCount, dimension }) => {
+      .unless(({ usage, format, arrayLayerCount, mipLevelCount, dimension }) => {
         return (
           ((usage & GPUConst.TextureUsage.RENDER_ATTACHMENT) !== 0 &&
             (!isTextureFormatPossiblyUsableAsColorRenderAttachment(format) ||
@@ -342,9 +342,11 @@ g.test('sampleCount,valid_sampleCount_with_other_parameter_varies')
             !isTextureFormatPossiblyStorageReadable(format)) ||
           (mipLevelCount !== 1 && dimension === '1d') ||
           ((usage & GPUConst.TextureUsage.TRANSIENT_ATTACHMENT) !== 0 &&
-            usage !==
+            (usage !==
               (GPUConst.TextureUsage.RENDER_ATTACHMENT |
-                GPUConst.TextureUsage.TRANSIENT_ATTACHMENT))
+                GPUConst.TextureUsage.TRANSIENT_ATTACHMENT) ||
+              mipLevelCount !== 1 ||
+              arrayLayerCount !== 1))
         );
       })
   )
@@ -1059,6 +1061,39 @@ g.test('texture_usage')
     }, !success);
   });
 
+g.test('depthOrArrayLayers_and_mipLevelCount_for_transient_attachments')
+  .desc(`Test depthOrArrayLayers and mipLevelCount must be 1 for transient attachments`)
+  .params(u =>
+    u
+      .combine('format', ['rgba8unorm', 'depth24plus'] as const)
+      .beginSubcases()
+      .combine('depthOrArrayLayers', [1, 2])
+      .combine('mipLevelCount', [1, 2])
+  )
+  .fn(t => {
+    // MAINTENANCE_TODO(#4509): Remove this when TRANSIENT_ATTACHMENT is added to the WebGPU spec.
+    t.skipIfTransientAttachmentNotSupported();
+
+    const { format, depthOrArrayLayers, mipLevelCount } = t.params;
+
+    const info = getBlockInfoForTextureFormat(format);
+    const size = [info.blockWidth, info.blockHeight, depthOrArrayLayers];
+    const descriptor = {
+      size,
+      mipLevelCount,
+      format,
+      usage: GPUConst.TextureUsage.RENDER_ATTACHMENT | GPUConst.TextureUsage.TRANSIENT_ATTACHMENT,
+    };
+
+    let success = true;
+    if (depthOrArrayLayers !== 1) success = false;
+    if (mipLevelCount !== 1) success = false;
+
+    t.expectValidationError(() => {
+      t.createTextureTracked(descriptor);
+    }, !success);
+  });
+
 g.test('viewFormats')
   .desc(
     `Test creating a texture with viewFormats list for all {texture format}x{view format}. Only compatible view formats should be valid.`