//----------------------------------------------------------
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{
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);
}
void ofBufferObject::copyTo(ofBufferObject & dstBuffer) const{
bind(GL_COPY_READ_BUFFER);
dstBuffer.bind(GL_COPY_WRITE_BUFFER);
glCopyBufferSubData(GL_COPY_READ_BUFFER,GL_COPY_WRITE_BUFFER,0,0,size());
unbind(GL_COPY_READ_BUFFER);
dstBuffer.unbind(GL_COPY_WRITE_BUFFER);
}
//----------------------------------------------------------
void ofFbo::copyTo(ofBufferObject & buffer) const{
if(!bIsAllocated) return;
bind();
buffer.bind(GL_PIXEL_PACK_BUFFER);
glReadPixels(0, 0, settings.width, settings.height, ofGetGLFormatFromInternal(settings.internalformat), ofGetGlTypeFromInternal(settings.internalformat), NULL);
buffer.unbind(GL_PIXEL_PACK_BUFFER);
unbind();
}
//----------------------------------------------------------
void ofTexture::copyTo(ofBufferObject & buffer) const{
ofSetPixelStoreiAlignment(GL_PACK_ALIGNMENT,getWidth(),ofGetBytesPerChannelFromGLType(ofGetGlTypeFromInternal(texData.glInternalFormat)),ofGetNumChannelsFromGLFormat(ofGetGLFormatFromInternal(texData.glInternalFormat)));
buffer.bind(GL_PIXEL_PACK_BUFFER);
glBindTexture(texData.textureTarget,texData.textureID);
glGetTexImage(texData.textureTarget,0,ofGetGLFormatFromInternal(texData.glInternalFormat),ofGetGlTypeFromInternal(texData.glInternalFormat),0);
glBindTexture(texData.textureTarget,0);
buffer.unbind(GL_PIXEL_PACK_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);
}
//----------------------------------------------------------
void ofTexture::loadData(const ofBufferObject & buffer, int glFormat, int glType){
buffer.bind(GL_PIXEL_UNPACK_BUFFER);
loadData(0,texData.width,texData.height,glFormat,glType);
buffer.unbind(GL_PIXEL_UNPACK_BUFFER);
}