Esempio n. 1
0
//--------------------------------------------------------------
void ofVbo::setVertexBuffer(ofBufferObject & buffer, int numCoords, int stride, int offset){
	positionAttribute.setBuffer(buffer, numCoords, stride, offset);
	bUsingVerts = true;
	// TODO: Check: we have no perfect way of knowing the new number of total vertices,
	// since the buffer does not tell us, so we try to calculate based on the data size
	// and the number of coordinates.
	totalVerts = buffer.size() / (numCoords * sizeof(float));

}
Esempio n. 2
0
//--------------------------------------------------------------
void ofVbo::setVertexBuffer(ofBufferObject & buffer, int numCoords, int stride, int offset){
	positionAttribute.setBuffer(buffer, numCoords, stride, offset);
	bUsingVerts = true;
	vaoChanged = true;
	// Calculate the total number of vertices based on what we know:
	int tmpStride = stride;
	if (tmpStride == 0) {
		// if stride is not given through argument, we need to calculate it based on 
		// on the data size and the number of coordinates.
		tmpStride = (numCoords * sizeof(float));
		if (tmpStride == 0) {
			ofLogWarning() << "Setting buffer with 0 vertices.";
			totalVerts = 0;
			return;
		}
	}
	totalVerts = buffer.size() / tmpStride;
}