1 files changed, 130 insertions, 0 deletions
diff --git a/gfx/angle/src/libANGLE/VertexArray.h b/gfx/angle/src/libANGLE/VertexArray.h
new file mode 100755
index 000000000..65c62f1ba
--- /dev/null
+++ b/gfx/angle/src/libANGLE/VertexArray.h
@@ -0,0 +1,130 @@
+//
+// Copyright (c) 2013 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.
+//
+// This class contains prototypes for representing GLES 3 Vertex Array Objects:
+//
+//   The buffer objects that are to be used by the vertex stage of the GL are collected
+//   together to form a vertex array object. All state related to the definition of data used
+//   by the vertex processor is encapsulated in a vertex array object.
+//
+
+#ifndef LIBANGLE_VERTEXARRAY_H_
+#define LIBANGLE_VERTEXARRAY_H_
+
+#include "libANGLE/RefCountObject.h"
+#include "libANGLE/Constants.h"
+#include "libANGLE/Debug.h"
+#include "libANGLE/State.h"
+#include "libANGLE/VertexAttribute.h"
+
+#include <vector>
+
+namespace rx
+{
+class GLImplFactory;
+class VertexArrayImpl;
+}
+
+namespace gl
+{
+class Buffer;
+
+class VertexArrayState final : public angle::NonCopyable
+{
+  public:
+    explicit VertexArrayState(size_t maxAttribs);
+    ~VertexArrayState();
+
+    const std::string &getLabel() const { return mLabel; }
+
+    const BindingPointer<Buffer> &getElementArrayBuffer() const { return mElementArrayBuffer; }
+    size_t getMaxAttribs() const { return mVertexAttributes.size(); }
+    size_t getMaxEnabledAttribute() const { return mMaxEnabledAttribute; }
+    const std::vector<VertexAttribute> &getVertexAttributes() const { return mVertexAttributes; }
+    const VertexAttribute &getVertexAttribute(size_t index) const
+    {
+        return mVertexAttributes[index];
+    }
+
+  private:
+    friend class VertexArray;
+    std::string mLabel;
+    std::vector<VertexAttribute> mVertexAttributes;
+    BindingPointer<Buffer> mElementArrayBuffer;
+    size_t mMaxEnabledAttribute;
+};
+
+class VertexArray final : public LabeledObject
+{
+  public:
+    VertexArray(rx::GLImplFactory *factory, GLuint id, size_t maxAttribs);
+    ~VertexArray();
+
+    GLuint id() const;
+
+    void setLabel(const std::string &label) override;
+    const std::string &getLabel() const override;
+
+    const VertexAttribute &getVertexAttribute(size_t attributeIndex) const;
+
+    void detachBuffer(GLuint bufferName);
+    void setVertexAttribDivisor(size_t index, GLuint divisor);
+    void enableAttribute(size_t attributeIndex, bool enabledState);
+    void setAttributeState(size_t attributeIndex, gl::Buffer *boundBuffer, GLint size, GLenum type,
+                           bool normalized, bool pureInteger, GLsizei stride, const void *pointer);
+
+    void setElementArrayBuffer(Buffer *buffer);
+
+    const BindingPointer<Buffer> &getElementArrayBuffer() const
+    {
+        return mState.getElementArrayBuffer();
+    }
+    size_t getMaxAttribs() const { return mState.getVertexAttributes().size(); }
+    const std::vector<VertexAttribute> &getVertexAttributes() const
+    {
+        return mState.getVertexAttributes();
+    }
+
+    rx::VertexArrayImpl *getImplementation() const { return mVertexArray; }
+
+    size_t getMaxEnabledAttribute() const { return mState.getMaxEnabledAttribute(); }
+
+    enum DirtyBitType
+    {
+        DIRTY_BIT_ELEMENT_ARRAY_BUFFER,
+
+        // Reserve bits for enabled flags
+        DIRTY_BIT_ATTRIB_0_ENABLED,
+        DIRTY_BIT_ATTRIB_MAX_ENABLED = DIRTY_BIT_ATTRIB_0_ENABLED + gl::MAX_VERTEX_ATTRIBS,
+
+        // Reserve bits for attrib pointers
+        DIRTY_BIT_ATTRIB_0_POINTER   = DIRTY_BIT_ATTRIB_MAX_ENABLED,
+        DIRTY_BIT_ATTRIB_MAX_POINTER = DIRTY_BIT_ATTRIB_0_POINTER + gl::MAX_VERTEX_ATTRIBS,
+
+        // Reserve bits for divisors
+        DIRTY_BIT_ATTRIB_0_DIVISOR   = DIRTY_BIT_ATTRIB_MAX_POINTER,
+        DIRTY_BIT_ATTRIB_MAX_DIVISOR = DIRTY_BIT_ATTRIB_0_DIVISOR + gl::MAX_VERTEX_ATTRIBS,
+
+        DIRTY_BIT_UNKNOWN = DIRTY_BIT_ATTRIB_MAX_DIVISOR,
+        DIRTY_BIT_MAX     = DIRTY_BIT_UNKNOWN,
+    };
+
+    typedef std::bitset<DIRTY_BIT_MAX> DirtyBits;
+
+    void syncImplState();
+    bool hasAnyDirtyBit() const { return mDirtyBits.any(); }
+
+  private:
+    GLuint mId;
+
+    VertexArrayState mState;
+    DirtyBits mDirtyBits;
+
+    rx::VertexArrayImpl *mVertexArray;
+};
+
+}
+
+#endif // LIBANGLE_VERTEXARRAY_H_