1. A method comprising: selecting at least one render target having a sequence of graphics application program interface (API) draw calls; creating an overdraw image based on the selected render target wherein the overdraw image represents for each pixel of a render target, a brightness corresponding to a number of times that each pixel has been written to; after creating the overdraw image, generating a visually enhanced overdraw image using the previously created overdraw image by increasing a dynamic range within the previously created overdraw image, by expanding a small range of overdraw values to a larger range to increase visibility of differences within the small range, determining minimum and maximum values in the overdraw image, generating a matrix multiplier based on the determined minimum and maximum values, and processing the overdraw image using the matrix multiplier to generate the enhanced overdraw image; and displaying the visually enhanced overdraw image.