Fast zoom-adaptable anti-aliasing of lines using a graphics processing unit

A system, comprising:

• a graphics processing unit (GPU);
• memory coupled to the GPU, wherein the memory is configured to store program instructions executable by the GPU to:
• receive input comprising a plurality of vertices, wherein the plurality of vertices represent one or more line segments;
• and
• generate one or more anti-aliased line segments based on the input, wherein in generating the one or more anti-aliased line segments, the program instructions are executable by the GPU to:
• modify an intensity of a first edge and a second edge of each line segment based on an anti-aliasing function;
• and
• maintain a maximum intensity of a central portion of at least one of the line segments, wherein the central portion is greater than one pixel in thickness.

A computer-readable storage medium, comprising program instructions, wherein the program instructions are computer-executable to implement:

• receiving input comprising a plurality of vertices at a graphics processing unit (GPU), wherein the plurality of vertices represent one or more line segments;
• and
• generating one or more anti-aliased line segments at the GPU based on the input, wherein generating the one or more anti-aliased line segments comprises:
• modifying an intensity of a first edge and a second edge of each line segment based on an anti-aliasing function;
• and
• maintaining a maximum intensity of a central portion of at least one of the line segments, wherein the central portion is greater than one pixel in thickness.

A computer-implemented method, comprising:

• receiving input comprising a plurality of vertices and a plurality of texture coordinates at a graphics processing unit (GPU) in a batch, wherein the plurality of vertices represent one or more line segments, and wherein each of the plurality of texture coordinates corresponds to one of the plurality of vertices;
• and
• generating one or more anti-aliased line segments at the GPU based on the input, wherein generating the one or more anti-aliased line segments comprises:
• modifying an intensity of a first edge and a second edge of each line segment based on an anti-aliasing function which determines an intensity of each of the plurality of vertices based on information stored in the corresponding one of the plurality of texture coordinates.