1 files changed, 94 insertions, 0 deletions
diff --git a/dom/canvas/WebGL2ContextTransformFeedback.cpp b/dom/canvas/WebGL2ContextTransformFeedback.cpp
new file mode 100644
index 0000000000..3dc6484604
--- /dev/null
+++ b/dom/canvas/WebGL2ContextTransformFeedback.cpp
@@ -0,0 +1,94 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* 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 "WebGL2Context.h"
+#include "WebGLProgram.h"
+#include "WebGLTransformFeedback.h"
+#include "GLContext.h"
+
+namespace mozilla {
+
+// -------------------------------------------------------------------------
+// Transform Feedback
+
+RefPtr<WebGLTransformFeedback> WebGL2Context::CreateTransformFeedback() {
+  const FuncScope funcScope(*this, "createTransformFeedback");
+  if (IsContextLost()) return nullptr;
+
+  GLuint tf = 0;
+  gl->fGenTransformFeedbacks(1, &tf);
+
+  return new WebGLTransformFeedback(this, tf);
+}
+
+void WebGL2Context::BindTransformFeedback(WebGLTransformFeedback* tf) {
+  FuncScope funcScope(*this, "bindTransformFeedback");
+  if (IsContextLost()) return;
+  funcScope.mBindFailureGuard = true;
+
+  if (tf && !ValidateObject("tf", *tf)) return;
+
+  if (mBoundTransformFeedback->mIsActive &&
+      !mBoundTransformFeedback->mIsPaused) {
+    ErrorInvalidOperation(
+        "Currently bound transform feedback is active and not"
+        " paused.");
+    return;
+  }
+
+  ////
+
+  mBoundTransformFeedback = (tf ? tf : mDefaultTransformFeedback.get());
+
+  gl->fBindTransformFeedback(LOCAL_GL_TRANSFORM_FEEDBACK,
+                             mBoundTransformFeedback->mGLName);
+
+  if (mBoundTransformFeedback) {
+    mBoundTransformFeedback->mHasBeenBound = true;
+  }
+
+  funcScope.mBindFailureGuard = false;
+}
+
+void WebGL2Context::BeginTransformFeedback(GLenum primMode) {
+  const FuncScope funcScope(*this, "beginTransformFeedback");
+  if (IsContextLost()) return;
+
+  mBoundTransformFeedback->BeginTransformFeedback(primMode);
+}
+
+void WebGL2Context::EndTransformFeedback() {
+  const FuncScope funcScope(*this, "endTransformFeedback");
+  if (IsContextLost()) return;
+
+  mBoundTransformFeedback->EndTransformFeedback();
+}
+
+void WebGL2Context::PauseTransformFeedback() {
+  const FuncScope funcScope(*this, "pauseTransformFeedback");
+  if (IsContextLost()) return;
+
+  mBoundTransformFeedback->PauseTransformFeedback();
+}
+
+void WebGL2Context::ResumeTransformFeedback() {
+  const FuncScope funcScope(*this, "resumeTransformFeedback");
+  if (IsContextLost()) return;
+
+  mBoundTransformFeedback->ResumeTransformFeedback();
+}
+
+void WebGL2Context::TransformFeedbackVaryings(
+    WebGLProgram& program, const std::vector<std::string>& varyings,
+    GLenum bufferMode) const {
+  const FuncScope funcScope(*this, "transformFeedbackVaryings");
+  if (IsContextLost()) return;
+
+  if (!ValidateObject("program", program)) return;
+
+  program.TransformFeedbackVaryings(varyings, bufferMode);
+}
+
+}  // namespace mozilla