Basic Hardware Requirements

Minimum and recommendet hardware for runnng rpdx:

Hardware	Recommendation	Description
Processor	x86-64 CPU, 8vCPUs recommended	rpdx makes use of multiple cores/threads for the following operations: UV unwrapping, texture baking, rendering,
RAM	1GB minimum, 16GB recommended	The amount of RAM required is highly dependent on the input models and operations performed.
Hard disk space	Ubuntu: 100MB, macOS: 85MB, Windows: 85MB	Executable and libraries only.
Graphics Card	Not used	rpdx can run headless, it has no dependencies on OS graphics APIs. rpdx does not support GPU acceleration.

Memory Usage Estimation

Basic estimation

The following provides a conservative estimation on the amount of memory necessary to compact a 3D model using rpdx. In some cases, the estimate could be much higher than the actual number.

        inputMem = numInputTris * 36 + numInputVertices * 64 + numInputTexels * 3
    

        totalMem = 100MB + (inputMem + numOutputTexels * 3) *4
    

Note, that all of the values used in the calculation can be printed or written from any given input or output files using the following commands:

        rpdx -i foo.bar -p
	

        rpdx -i foo.bar --write_info
	

Precise estimation

This estimation should be more accurate but may in some cases be under the target. The number of vertices can be approximated as 0.75* numTriangles for many models.

        inputEstimationGeo = inTris * 3 * 3 * 4 + inVerts * (3 + 3 + 2) * 8
	

        # assuming tangents are needed (baking normalmaps)
	

        outputEstimationGeo = outTris * 3 * 4 * 4 + outVerts * (3 + 3 + 6 + 2) * 8
	

        estimation = (100 * 1024 * 1024) + (inputEstimationGeo + inTexels * 3) * 2 + (outputEstimationGeo + outTexels * 3) * 2