1 files changed, 95 insertions, 0 deletions

diff --git a/source/modules/asura-core/Graphics/GPUBuffer.h b/source/modules/asura-core/Graphics/GPUBuffer.h
new file mode 100644
index 0000000..bb40055
--- /dev/null
+++ b/source/modules/asura-core/Graphics/GPUBuffer.h
@@ -0,0 +1,95 @@
+#ifndef _ASURA_GPU_BUFFER_H_
+#define _ASURA_GPU_BUFFER_H_
+
+#include <asura-utils/Scripting/Portable.hpp>
+#include <asura-utils/Exceptions/Exception.h>
+#include <asura-utils/type.h>
+
+#include "GfxDevice.h"
+
+namespace_begin(AsuraEngine)
+namespace_begin(Graphics)
+
+enum BufferType
+{
+	BUFFER_TYPE_VERTEX, ///< ���㻺�壬����position\tangent\normal\color\texcoord(n)
+	BUFFER_TYPE_INDEX,  ///< ��������
+};
+
+enum BufferUsage
+{
+	BUFFER_USAGE_STREAM,  ///< �޸�һ�Σ�ʹ�ô�����
+	BUFFER_USAGE_DYNAMIC, ///< �޸�һ�Σ�����ʹ��
+	BUFFER_USAGE_STATIC,  ///< �����޸ĺ�ʹ��
+};
+
+enum BufferDataType
+{
+	BUFFER_DATA_TYPE_INT,           
+	BUFFER_DATA_TYPE_FLOAT,         
+	BUFFER_DATA_TYPE_UNSIGNED_BYTE,
+};
+
+///
+/// VRAM���壬�ֶ��㻺��vbo����������ebo���֣�����ÿ�ζ����ڴ����Դ��ϴ����ݡ���framework��renderers��
+/// ������
+///
+ASURA_ABSTRACT class GPUBuffer
+{
+public:
+
+	GPUBuffer(BufferType type, BufferUsage usage, BufferDataType datatype, size_t size);
+	virtual ~GPUBuffer();
+
+	static size_t GetDataTypeSize(GLenum datatype);
+
+	bool   Fill(const void* data, size_t size, uint offset = 0) ASURA_THROW(Exception);
+
+	void   Bind();
+	void   UnBind();
+
+	uint   GetBufferSize();
+	uint   GetBufferCount();
+	GLenum GetDataType();
+	size_t GetDataTypeSize();
+
+private:
+
+	GLenum ConvertBufferType(BufferType type);
+	GLenum ConvertBufferUsage(BufferUsage type);
+	GLenum ConvertBufferDataType(BufferDataType type);
+
+	GLenum m_Target;
+	GLuint m_Buffer;
+
+	/// opengl���Դ滺�岢û�ж��������͵�Ҫ��ֻ��glVertexAttribPointerʱ��ָ��������drawcall ʱ���ݸ���
+	/// ��������ʼ��ַ�����ʹ�buffer��ȡ���ඥ�����ݣ����Բ�ͬ���������Ϳ��Ա�����һ��buffer�С�����Ϊ�˱���
+	/// �ӿڵļ�࣬�����ڳ�ʼ��bufferʱָ��������������ͣ��������������ڱ����������͵�һ�£����Բ�ͬ������
+	/// ���ͷ�����ͬ��buffer��
+
+	GLenum m_DataType;
+	GLuint m_Usage;
+	uint   m_Size;
+
+#if ASURA_DEBUG
+	byte* m_Data; 
+#endif
+
+luaxport:
+
+	LUAX_DECL_ABSTRACT_FACTORY(GPUBuffer);
+
+	LUAX_DECL_ENUM(BufferType, 1);
+	LUAX_DECL_ENUM(BufferUsage, 1);
+	LUAX_DECL_ENUM(BufferDataType, 2);
+
+	LUAX_DECL_METHOD(_Fill);
+	LUAX_DECL_METHOD(_GetSize);
+	LUAX_DECL_METHOD(_GetCount);
+
+};
+
+namespace_end
+namespace_end
+
+#endif
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