1 files changed, 49 insertions, 0 deletions
diff --git a/dom/canvas/WebGLExtensionDepthTexture.cpp b/dom/canvas/WebGLExtensionDepthTexture.cpp
new file mode 100644
index 000000000..5afd6ba66
--- /dev/null
+++ b/dom/canvas/WebGLExtensionDepthTexture.cpp
@@ -0,0 +1,49 @@
+/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "WebGLExtensions.h"
+
+#include "GLContext.h"
+#include "mozilla/dom/WebGLRenderingContextBinding.h"
+#include "WebGLContext.h"
+
+namespace mozilla {
+
+WebGLExtensionDepthTexture::WebGLExtensionDepthTexture(WebGLContext* webgl)
+    : WebGLExtensionBase(webgl)
+{
+    auto& fua = webgl->mFormatUsage;
+
+    const auto fnAdd = [&fua](webgl::EffectiveFormat effFormat, GLenum unpackFormat,
+                              GLenum unpackType)
+    {
+        auto usage = fua->EditUsage(effFormat);
+        usage->isFilterable = true;
+        usage->SetRenderable();
+
+        const webgl::PackingInfo pi = {unpackFormat, unpackType};
+        const webgl::DriverUnpackInfo dui = {unpackFormat, unpackFormat, unpackType};
+        fua->AddTexUnpack(usage, pi, dui);
+
+        fua->AllowUnsizedTexFormat(pi, usage);
+    };
+
+    fnAdd(webgl::EffectiveFormat::DEPTH_COMPONENT16, LOCAL_GL_DEPTH_COMPONENT,
+          LOCAL_GL_UNSIGNED_SHORT);
+
+    fnAdd(webgl::EffectiveFormat::DEPTH_COMPONENT24, LOCAL_GL_DEPTH_COMPONENT,
+          LOCAL_GL_UNSIGNED_INT);
+
+    fnAdd(webgl::EffectiveFormat::DEPTH24_STENCIL8, LOCAL_GL_DEPTH_STENCIL,
+          LOCAL_GL_UNSIGNED_INT_24_8);
+}
+
+WebGLExtensionDepthTexture::~WebGLExtensionDepthTexture()
+{
+}
+
+IMPL_WEBGL_EXTENSION_GOOP(WebGLExtensionDepthTexture, WEBGL_depth_texture)
+
+} // namespace mozilla