Various embodiments are generally directed to techniques for reducing the processing demands of shading primitives in rendering a 2D screen image from a 3D model. A device includes a fine rasterizing component to employ multiple screen image samples per screen image pixel to perform fine rasterization to identify a set of visible primitives, a coarse rasterizing component to employ a single shading image sample per shading image pixel to perform coarse rasterization from the same perspective as the fine rasterization to identify at least one primitive along a path of a shading image pixel, and a shading component to shade a primitive identified by a screen image sample of a first screen image pixel as visible within the shading image pixel and identified as along the path of the shading image sample associated with the shading image pixel to derive a color value. Other embodiments are described and claimed.