1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
|
#ifndef _ASURA_GPU_BUFFER_H_
#define _ASURA_GPU_BUFFER_H_
#include <asura-base/Scripting/Scripting.h>
#include <asura-base/Exception.h>
#include <asura-base/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, ///< һΣʹô
BUFFER_USAGE_DYNAMIC, ///< һΣʹ
BUFFER_USAGE_STATIC, ///< ĺʹ
};
enum BufferDataType
{
BUFFER_DATA_TYPE_INT,
BUFFER_DATA_TYPE_FLOAT,
BUFFER_DATA_TYPE_UNSIGNED_BYTE,
};
///
/// VRAM壬ֶ㻺vboebo֣ÿζڴԴϴݡframeworkrenderersй
///
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;
/// openglԴ滺岢ûж͵ҪֻglVertexAttribPointerʱָdrawcall ʱݸ
/// ʼַʹbufferȡඥݣԲͬͿԱһbufferСΪ˱ֽӿڵļ࣬
/// ʼbufferʱָͣڱ͵һ£Բͬͷͬbuffer
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
|
