//----------------------------------------------------------
void ofTexture::allocateAsBufferTexture(const ofBufferObject & buffer, int glInternalFormat){
texData.glInternalFormat = glInternalFormat;
texData.textureTarget = GL_TEXTURE_BUFFER;
texData.bufferId = buffer.getId();
allocate(texData,0,0);
buffer.bind(GL_TEXTURE_BUFFER);
}
void ofBufferObject::copyTo(ofBufferObject & dstBuffer, int readOffset, int writeOffset, size_t size) const{
#ifdef GLEW_VERSION_4_5
if (GLEW_EXT_direct_state_access) {
glCopyNamedBufferSubData(data->id,dstBuffer.getId(),readOffset,writeOffset,size);
return;
}
#endif
bind(GL_COPY_READ_BUFFER);
dstBuffer.bind(GL_COPY_WRITE_BUFFER);
glCopyBufferSubData(GL_COPY_READ_BUFFER,GL_COPY_WRITE_BUFFER,readOffset,writeOffset,size);
unbind(GL_COPY_READ_BUFFER);
dstBuffer.unbind(GL_COPY_WRITE_BUFFER);
}