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00032 #ifndef BufferObject_INCLUDE_ONCE
00033 #define BufferObject_INCLUDE_ONCE
00034
00035 #include <vlCore/Vector2.hpp>
00036 #include <vlCore/Vector3.hpp>
00037 #include <vlCore/Vector4.hpp>
00038 #include <vlCore/Buffer.hpp>
00039 #include <vlGraphics/OpenGL.hpp>
00040 #include <vlCore/vlnamespace.hpp>
00041 #include <vlCore/Vector4.hpp>
00042 #include <vlCore/Sphere.hpp>
00043 #include <vlCore/AABB.hpp>
00044
00045 namespace vl
00046 {
00047
00048
00049
00055 class BufferObject: public Buffer
00056 {
00057 VL_INSTRUMENT_CLASS(vl::BufferObject, Buffer)
00058
00059 public:
00060 BufferObject()
00061 {
00062 VL_DEBUG_SET_OBJECT_NAME()
00063 mHandle = 0;
00064 mUsage = BU_STATIC_DRAW;
00065 mByteCountBufferObject = 0;
00066 }
00067
00068 BufferObject(const BufferObject& other): Buffer(other)
00069 {
00070 VL_DEBUG_SET_OBJECT_NAME()
00071 mHandle = 0;
00072 mUsage = BU_STATIC_DRAW;
00073 mByteCountBufferObject = 0;
00074
00075 *this = other;
00076 }
00077
00078
00079 BufferObject& operator=(const BufferObject& other)
00080 {
00081 deleteBufferObject();
00082 super::operator=(other);
00083 return *this;
00084 }
00085
00086
00087 void swap(BufferObject& other)
00088 {
00089
00090 Buffer::swap(other);
00091
00092 unsigned int tmp_handle = mHandle;
00093 EBufferObjectUsage tmp_usage = mUsage;
00094 GLsizeiptr tmp_bytes = mByteCountBufferObject;
00095
00096 mHandle = other.mHandle;
00097 mUsage = tmp_usage;
00098 mByteCountBufferObject = other.mByteCountBufferObject;
00099
00100 other.mHandle = tmp_handle;
00101 other.mUsage = tmp_usage;
00102 other.mByteCountBufferObject = tmp_bytes;
00103 }
00104
00105 ~BufferObject()
00106 {
00107 deleteBufferObject();
00108 }
00109
00110 void setHandle(unsigned int handle) { mHandle = handle; }
00111
00112 unsigned int handle() const { return mHandle; }
00113
00114 GLsizeiptr byteCountBufferObject() const { return mByteCountBufferObject; }
00115
00116 void createBufferObject()
00117 {
00118 VL_CHECK_OGL();
00119 VL_CHECK(Has_BufferObject)
00120 if (Has_BufferObject && handle() == 0)
00121 {
00122 VL_CHECK(mByteCountBufferObject == 0)
00123 VL_glGenBuffers( 1, &mHandle ); VL_CHECK_OGL();
00124 mByteCountBufferObject = 0;
00125 VL_CHECK(handle())
00126 }
00127 }
00128
00129 void deleteBufferObject()
00130 {
00131
00132
00133 VL_CHECK(Has_BufferObject || handle() == 0)
00134 if (Has_BufferObject && handle() != 0)
00135 {
00136 VL_glDeleteBuffers( 1, &mHandle );
00137 mHandle = 0;
00138 mByteCountBufferObject = 0;
00139 }
00140 }
00141
00142 void downloadBufferObject()
00143 {
00144 VL_CHECK(Has_BufferObject)
00145 if ( Has_BufferObject && handle() )
00146 {
00147 resize( byteCountBufferObject() );
00148 void* vbo_ptr = mapBufferObject(BA_READ_ONLY);
00149 memcpy( ptr(), vbo_ptr, byteCountBufferObject() );
00150 unmapBufferObject();
00151 }
00152 }
00153
00154
00155
00156 void setBufferData( EBufferObjectUsage usage, bool discard_local_storage=false )
00157 {
00158 setBufferData( (int)bytesUsed(), ptr(), usage );
00159 mUsage = usage;
00160 if (discard_local_storage)
00161 clear();
00162 }
00163
00164
00165
00166
00167
00168 void setBufferData( GLsizeiptr byte_count, const GLvoid* data, EBufferObjectUsage usage )
00169 {
00170 VL_CHECK_OGL();
00171 VL_CHECK(Has_BufferObject)
00172 if ( Has_BufferObject )
00173 {
00174 createBufferObject();
00175
00176 VL_glBindBuffer( GL_ARRAY_BUFFER, handle() ); VL_CHECK_OGL();
00177 VL_glBufferData( GL_ARRAY_BUFFER, byte_count, data, usage ); VL_CHECK_OGL();
00178 VL_glBindBuffer( GL_ARRAY_BUFFER, 0 ); VL_CHECK_OGL();
00179 mByteCountBufferObject = byte_count;
00180 mUsage = usage;
00181 }
00182 }
00183
00184
00185
00186
00187 void setBufferSubData( GLintptr offset=0, GLsizeiptr byte_count=-1, bool discard_local_storage=false )
00188 {
00189 byte_count = byte_count < 0 ? byteCountBufferObject() : byte_count;
00190 setBufferSubData( offset, byte_count, ptr() );
00191 if (discard_local_storage)
00192 clear();
00193 }
00194
00195
00196
00197
00198 void setBufferSubData( GLintptr offset, GLsizeiptr byte_count, const GLvoid* data )
00199 {
00200 VL_CHECK_OGL();
00201 VL_CHECK(Has_BufferObject)
00202 VL_CHECK(data);
00203 VL_CHECK(handle())
00204 if (Has_BufferObject && data && handle())
00205 {
00206
00207 VL_glBindBuffer( GL_ARRAY_BUFFER, handle() ); VL_CHECK_OGL();
00208 VL_glBufferSubData( GL_ARRAY_BUFFER, offset, byte_count, data ); VL_CHECK_OGL();
00209 VL_glBindBuffer( GL_ARRAY_BUFFER, 0 ); VL_CHECK_OGL();
00210 }
00211 }
00212
00213
00214
00215 void* mapBufferObject(EBufferObjectAccess access)
00216 {
00217 VL_CHECK_OGL();
00218 VL_CHECK(Has_BufferObject)
00219 if ( Has_BufferObject )
00220 {
00221 createBufferObject();
00222 VL_glBindBuffer( GL_ARRAY_BUFFER, handle() ); VL_CHECK_OGL();
00223 void* ptr = VL_glMapBuffer( GL_ARRAY_BUFFER, access ); VL_CHECK_OGL();
00224 VL_glBindBuffer( GL_ARRAY_BUFFER, 0 ); VL_CHECK_OGL();
00225 return ptr;
00226 }
00227 else
00228 return NULL;
00229 }
00230
00231
00232
00233
00234
00235
00236
00237
00238
00239
00240
00241 bool unmapBufferObject()
00242 {
00243 VL_CHECK_OGL();
00244 VL_CHECK(Has_BufferObject)
00245 if ( Has_BufferObject )
00246 {
00247 createBufferObject();
00248 VL_glBindBuffer( GL_ARRAY_BUFFER, handle() ); VL_CHECK_OGL();
00249 bool ok = VL_glUnmapBuffer( GL_ARRAY_BUFFER ) == GL_TRUE; VL_CHECK_OGL();
00250 VL_glBindBuffer( GL_ARRAY_BUFFER, 0 ); VL_CHECK_OGL();
00251 VL_CHECK_OGL();
00252 return ok;
00253 }
00254 else
00255 return false;
00256 }
00257
00259 EBufferObjectUsage usage() const { return mUsage; }
00260
00261 protected:
00262 unsigned int mHandle;
00263 GLsizeiptr mByteCountBufferObject;
00264 EBufferObjectUsage mUsage;
00265 };
00266 }
00267
00268 #endif