1 files changed, 94 insertions, 0 deletions
diff --git a/gfx/angle/src/libANGLE/TransformFeedback.h b/gfx/angle/src/libANGLE/TransformFeedback.h
new file mode 100755
index 000000000..5b1eb34bf
--- /dev/null
+++ b/gfx/angle/src/libANGLE/TransformFeedback.h
@@ -0,0 +1,94 @@
+//
+// Copyright (c) 2014 The ANGLE Project Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+
+#ifndef LIBANGLE_TRANSFORM_FEEDBACK_H_
+#define LIBANGLE_TRANSFORM_FEEDBACK_H_
+
+#include "libANGLE/RefCountObject.h"
+
+#include "common/angleutils.h"
+#include "libANGLE/Debug.h"
+
+#include "angle_gl.h"
+
+namespace rx
+{
+class GLImplFactory;
+class TransformFeedbackImpl;
+}
+
+namespace gl
+{
+class Buffer;
+struct Caps;
+class Program;
+
+class TransformFeedbackState final : public angle::NonCopyable
+{
+  public:
+    TransformFeedbackState(size_t maxIndexedBuffers);
+
+    const BindingPointer<Buffer> &getGenericBuffer() const;
+    const OffsetBindingPointer<Buffer> &getIndexedBuffer(size_t idx) const;
+    const std::vector<OffsetBindingPointer<Buffer>> &getIndexedBuffers() const;
+
+  private:
+    friend class TransformFeedback;
+
+    std::string mLabel;
+
+    bool mActive;
+    GLenum mPrimitiveMode;
+    bool mPaused;
+
+    Program *mProgram;
+
+    BindingPointer<Buffer> mGenericBuffer;
+    std::vector<OffsetBindingPointer<Buffer>> mIndexedBuffers;
+};
+
+class TransformFeedback final : public RefCountObject, public LabeledObject
+{
+  public:
+    TransformFeedback(rx::GLImplFactory *implFactory, GLuint id, const Caps &caps);
+    virtual ~TransformFeedback();
+
+    void setLabel(const std::string &label) override;
+    const std::string &getLabel() const override;
+
+    void begin(GLenum primitiveMode, Program *program);
+    void end();
+    void pause();
+    void resume();
+
+    bool isActive() const;
+    bool isPaused() const;
+    GLenum getPrimitiveMode() const;
+
+    bool hasBoundProgram(GLuint program) const;
+
+    void bindGenericBuffer(Buffer *buffer);
+    const BindingPointer<Buffer> &getGenericBuffer() const;
+
+    void bindIndexedBuffer(size_t index, Buffer *buffer, size_t offset, size_t size);
+    const OffsetBindingPointer<Buffer> &getIndexedBuffer(size_t index) const;
+    size_t getIndexedBufferCount() const;
+
+    void detachBuffer(GLuint bufferName);
+
+    rx::TransformFeedbackImpl *getImplementation();
+    const rx::TransformFeedbackImpl *getImplementation() const;
+
+  private:
+    void bindProgram(Program *program);
+
+    TransformFeedbackState mState;
+    rx::TransformFeedbackImpl* mImplementation;
+};
+
+}
+
+#endif // LIBANGLE_TRANSFORM_FEEDBACK_H_