1 files changed, 47 insertions, 0 deletions
diff --git a/dom/canvas/WebGLExtensionCompressedTextureS3TC.cpp b/dom/canvas/WebGLExtensionCompressedTextureS3TC.cpp
new file mode 100644
index 000000000..c57693add
--- /dev/null
+++ b/dom/canvas/WebGLExtensionCompressedTextureS3TC.cpp
@@ -0,0 +1,47 @@
+/* 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 {
+
+WebGLExtensionCompressedTextureS3TC::WebGLExtensionCompressedTextureS3TC(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(COMPRESSED_RGB_S3TC_DXT1_EXT));
+    fnAdd(FOO(COMPRESSED_RGBA_S3TC_DXT1_EXT));
+    fnAdd(FOO(COMPRESSED_RGBA_S3TC_DXT3_EXT));
+    fnAdd(FOO(COMPRESSED_RGBA_S3TC_DXT5_EXT));
+
+#undef FOO
+}
+
+WebGLExtensionCompressedTextureS3TC::~WebGLExtensionCompressedTextureS3TC()
+{
+}
+
+IMPL_WEBGL_EXTENSION_GOOP(WebGLExtensionCompressedTextureS3TC, WEBGL_compressed_texture_s3tc)
+
+} // namespace mozilla