Bug 1335296 - Expand about:support WebGL information

1 files changed, 79 insertions, 0 deletions

diff --git a/dom/canvas/WebGLExtensionDebugGet.cpp b/dom/canvas/WebGLExtensionDebugGet.cpp
new file mode 100644
index 000000000..39bb3c57a
--- /dev/null
+++ b/dom/canvas/WebGLExtensionDebugGet.cpp
@@ -0,0 +1,79 @@
+/* -*- 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 "mozilla/dom/WebGLRenderingContextBinding.h"
+#include "WebGLContext.h"
+#include "WebGLContextUtils.h"
+
+namespace mozilla {
+
+WebGLExtensionDebugGet::WebGLExtensionDebugGet(WebGLContext* webgl)
+    : WebGLExtensionBase(webgl)
+{
+}
+
+WebGLExtensionDebugGet::~WebGLExtensionDebugGet()
+{
+}
+
+void
+WebGLExtensionDebugGet::GetParameter(JSContext* cx, GLenum pname,
+                                     JS::MutableHandle<JS::Value> retval,
+                                     ErrorResult& er) const
+{
+    const auto& gl = mContext->gl;
+    gl->MakeCurrent();
+
+    switch (pname) {
+    case LOCAL_GL_EXTENSIONS:
+        {
+            nsString ret;
+            if (!gl->IsCoreProfile()) {
+                const auto rawExts = (const char*)gl->fGetString(LOCAL_GL_EXTENSIONS);
+                ret = NS_ConvertUTF8toUTF16(rawExts);
+            } else {
+                const auto& numExts = gl->GetIntAs<GLuint>(LOCAL_GL_NUM_EXTENSIONS);
+                for (GLuint i = 0; i < numExts; i++) {
+                    const auto rawExt = (const char*)gl->fGetStringi(LOCAL_GL_EXTENSIONS,
+                                                                     i);
+                    if (i > 0) {
+                        ret.AppendLiteral(" ");
+                    }
+                    ret.Append(NS_ConvertUTF8toUTF16(rawExt));
+                }
+            }
+            retval.set(StringValue(cx, ret, er));
+            return;
+        }
+
+    case LOCAL_GL_RENDERER:
+    case LOCAL_GL_VENDOR:
+    case LOCAL_GL_VERSION:
+        {
+            const auto raw = (const char*)gl->fGetString(pname);
+            retval.set(StringValue(cx, NS_ConvertUTF8toUTF16(raw), er));
+            return;
+        }
+
+    case 0x10000: // "WSI_INFO"
+        {
+            nsCString info;
+            gl->GetWSIInfo(&info);
+            retval.set(StringValue(cx, NS_ConvertUTF8toUTF16(info), er));
+            return;
+        }
+
+    default:
+        mContext->ErrorInvalidEnumArg("MOZ_debug_get.getParameter", "pname", pname);
+        retval.set(JS::NullValue());
+        return;
+    }
+}
+
+IMPL_WEBGL_EXTENSION_GOOP(WebGLExtensionDebugGet, MOZ_debug_get)
+
+} // namespace mozilla