TARGET INDEPENDENT RASTERIZATION WITH MULTIPLE COLOR SAMPLES

摘要

A graphics processing pipeline within a parallel processing unit (PPU) is configured to perform path rendering by generating a collection of graphics primitives that represent each path to be rendered. The graphics processing pipeline determines the coverage of each primitive at a number of stencil sample locations within each different pixel. Then, the graphics processing pipeline reduces the number of stencil samples down to a smaller number of color samples, for each pixel. The graphics processing pipeline is configured to modulate a given color sample associated with a given pixel based on the color values of any graphics primitives that cover the stencil samples from which the color sample was reduced. The final color of the pixel is determined by downsampling the color samples associated with the pixel.

主权项

1. A computer-implemented method for rendering a graphics image, the method comprising:
identifying a first set of samples that reside within a pixel, wherein each sample in the first set of samples is associated with one or more state values; determining coverage of the first set of samples relative to a graphics primitive; reducing the first set of samples to a second set of samples, wherein the second set of samples includes fewer samples than the first set of samples; and determining a color value for each sample in the second set of samples based on the coverage of the first set of samples relative to the graphics primitive and a color value associated with the graphics primitive.