D3D11: Disable OES_texture_3D.

GL_OES_texture_3D requires support for 3D textures at both API and GLSL
levels.

D3D11 back-end doesn't handle GLSL's added functions (texture3D*)
properly. See TextureFunctionHLSL::useTextureFunction()
(TextureFunctionHLSL.cpp:1475)

Bug: angleproject:4926
Change-Id: Icd669b070c68ec04f5de790d5a531912f5b42d98
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2336132
Commit-Queue: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>

src/libANGLE/renderer/d3d/d3d11/renderer11_utils.cpp

@@ -1634,15 +1634,16 @@ void GenerateCaps(ID3D11Device *device,
     extensions->copyTexture                         = true;
     extensions->copyCompressedTexture               = true;
     extensions->textureStorageMultisample2DArrayOES = true;
-    extensions->multiviewMultisample      = ((extensions->multiview || extensions->multiview2) &&
+    extensions->multiviewMultisample     = ((extensions->multiview || extensions->multiview2) &&
                                         extensions->textureStorageMultisample2DArrayOES);
-    extensions->copyTexture3d             = true;
-    extensions->textureBorderClampOES     = true;
-    extensions->textureMultisample        = true;
-    extensions->provokingVertex           = true;
-    extensions->blendFuncExtended         = true;
-    extensions->maxDualSourceDrawBuffers  = 1;
-    extensions->texture3DOES              = true;
+    extensions->copyTexture3d            = true;
+    extensions->textureBorderClampOES    = true;
+    extensions->textureMultisample       = true;
+    extensions->provokingVertex          = true;
+    extensions->blendFuncExtended        = true;
+    extensions->maxDualSourceDrawBuffers = 1;
+    // http://anglebug.com/4926
+    extensions->texture3DOES              = false;
     extensions->baseVertexBaseInstance    = true;
     extensions->drawElementsBaseVertexOES = true;
     extensions->drawElementsBaseVertexEXT = true;