1 files changed, 46 insertions, 0 deletions
diff --git a/dom/canvas/WebGLExtensionCompressedTextureATC.cpp b/dom/canvas/WebGLExtensionCompressedTextureATC.cpp
new file mode 100644
index 000000000..b114016ce
--- /dev/null
+++ b/dom/canvas/WebGLExtensionCompressedTextureATC.cpp
@@ -0,0 +1,46 @@
+/* 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"
+
+#ifdef FOO
+#error FOO is already defined! We use FOO() macros to keep things succinct in this file.
+#endif
+
+namespace mozilla {
+
+WebGLExtensionCompressedTextureATC::WebGLExtensionCompressedTextureATC(WebGLContext* webgl)
+    : WebGLExtensionBase(webgl)
+{
+    RefPtr<WebGLContext> webgl_ = webgl; // Bug 1201275
+    const auto fnAdd = [&webgl_](GLenum sizedFormat, webgl::EffectiveFormat effFormat) {
+        auto& fua = webgl_->mFormatUsage;
+
+        auto usage = fua->EditUsage(effFormat);
+        usage->isFilterable = true;
+        fua->AllowSizedTexFormat(sizedFormat, usage);
+
+        webgl_->mCompressedTextureFormats.AppendElement(sizedFormat);
+    };
+
+#define FOO(x) LOCAL_GL_ ## x, webgl::EffectiveFormat::x
+
+    fnAdd(FOO(ATC_RGB_AMD));
+    fnAdd(FOO(ATC_RGBA_EXPLICIT_ALPHA_AMD));
+    fnAdd(FOO(ATC_RGBA_INTERPOLATED_ALPHA_AMD));
+
+#undef FOO
+}
+
+WebGLExtensionCompressedTextureATC::~WebGLExtensionCompressedTextureATC()
+{
+}
+
+IMPL_WEBGL_EXTENSION_GOOP(WebGLExtensionCompressedTextureATC, WEBGL_compressed_texture_atc)
+
+} // namespace mozilla