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US 8,044,963 B2Granted
System for emulating graphics operations
AssigneeApple Inc.
InventorJohn Harper
Life of this patent
Estimating the term…
Abstract
Disclosed is a system for producing images including emulation techniques using multiple processors. The system provides for emulation of graphics processing resources such that a central processing unit may provide graphics support. Disclosed embodiments include emulation of selected graphics calls as well as emulation of a programmable graphics processor for compatibility with systems having no compatible GPU.
Claims28
A method of creating an image in a computer system, the method comprising:
- receiving, by a first process executing from a memory in a first computer system, a request to render a polygon, the request associated with a graphics processing unit (GPU) program representing the polygon;
- converting the GPU program into a central processing unit (CPU) program;
- dividing the CPU program into two or more portions, at least one portion representing a section of the polygon;
- selecting the at least one portion for rendering;
- selecting a first scan line in the at least one portion for rendering, the first scan line comprising a plurality of pixels;
- rendering, by a CPU, at least a portion of the scan line in increments of L pixels;
- and
- interpolating, by the CPU, texture values for at least some of the pixels,
- wherein the GPU program is represented as a plurality of nodes and a plurality of links, and wherein each of the plurality of nodes represents a programmable GPU fragment program and each of the plurality of links represents an intermediary result and storage necessary to hold the intermediary result.
6 more elements
A method of creating a result image, the method comprising:
- receiving a request to render a result image;
- creating an object in a memory representing the result image, the object comprising one or more programmable graphics processing unit (GPU) fragment programs for applying at least one filter to at least one image;
- and
- executing, by a central processing unit (CPU) emulating a programmable GPU, the object to render the result image,
- wherein the object is represented as a plurality of nodes and a plurality of links, and wherein each of the plurality of nodes represents a programmable GPU fragment program and each of the plurality of links represents an intermediary result and storage necessary to hold the intermediary result.
2 more elements
Dependencies are inferred from the claim text.