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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
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Add m-esr52 at 52.6.0
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+//
+// 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_