# US 12,002,144 B2 · Multi-process compositor

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- Number: US 12,002,144 B2
- Document ID: US12002144B2
- Status: Granted
- Kind: B2
- Application number: 18/134,662
- Filed: 2023-04-14
- Published: 2023-08-10
- Granted: 2024-06-04
- Earliest claimed: 2018-05-25
- Assignees: Google Inc.
- Applicants: Google LLC
- Inventors: Joshua Gargus; Jeffrey Brown; Michael Jurka
- Web page: https://patentgrep.com/patent/US12002144B2

## CPC

- G06T 15/005: {General purpose rendering architectures}
- G06T 15/503: {Blending, e.g. for anti-aliasing}
- G06T 2210/61: Scene description
- G06T: IMAGE DATA PROCESSING OR GENERATION, IN GENERAL

## Abstract

This technology relates to rendering content from discrete applications. In this regard, one or more computing devices may receive a global scene graph containing resources provided by two or more discrete processes, wherein the global scene graph is instantiated by a first process of the two or more discrete processes. The one or more computing devices may render and output for display, the global scene graph in accordance with the resources contained there.

## Claims

### Claim 1

A computer implemented method comprising:
generating, by one or more computing devices, a first end-point for a communication channel that is provided to a process loaded by the one or more computing devices, and a second end-point for the communication channel that is provided to a multi-process compositor; and
sending, by the one or more computing devices, commands from the first end-point to the second end-point.

### Claim 2 (depends on 1)

The method of claim 1, wherein the commands instruct the multi-process compositor to generate a set of resources.

### Claim 3 (depends on 1)

The method of claim 1, wherein the process provides commands to the multi-process compositor.

### Claim 4 (depends on 1)

The method of claim 1, wherein the commands instruct the multi-process compositor to generate nodes corresponding to resources.

### Claim 5 (depends on 1)

The method of claim 1, wherein the commands instruct the multi-process compositor to ignore or disallow certain commands.

### Claim 6 (depends on 1)

The method of claim 1, wherein each of the commands includes an identification value such that a resource map can correctly coordinate a delivery of a resource to a respective node.

### Claim 7 (depends on 1)

The method of claim 1, wherein the multi-process compositor is controlled to generate one or more global scene graphs.

### Claim 8 (depends on 1)

The method of claim 1, further comprising:
loading, by the one or more computing devices, a plurality of processes and the multi-process compositor.

### Claim 9 (depends on 1)

The method of claim 1, further comprising:
establishing, by the one or more computing devices, a session in the multi-process compositor for the process through the communication channel.

### Claim 10 (depends on 9)

The method of claim 9, wherein the session includes a resource map.

### Claim 11 (depends on 1)

The method of claim 1, wherein the multi-process compositor includes a resource map which maps each resource of a plurality of resources with respective nodes and processes associated with the resource.

### Claim 12

A system comprising:
one or more computing devices configured to:
generate a first end-point for a communication channel that is provided to a process loaded by the one or more computing devices, and a second end-point for the communication channel that is provided to a multi-process compositor; and
send commands from the first end-point to the second end-point.

### Claim 13 (depends on 12)

The system of claim 12, wherein the commands instruct the multi-process compositor to generate a set of resources.

### Claim 14 (depends on 12)

The system of claim 12, wherein the process provides commands to the multi-process compositor.

### Claim 15 (depends on 12)

The system of claim 12, wherein the commands instruct the multi-process compositor to generate nodes corresponding to resources.

### Claim 16 (depends on 12)

The system of claim 12, wherein the commands instruct the multi-process compositor to ignore or disallow certain commands.

### Claim 17 (depends on 12)

The system of claim 12, wherein each of the commands includes an identification value such that a resource map can correctly coordinate a delivery of a resource to a respective node.

### Claim 18 (depends on 12)

The system of claim 12, wherein the multi-process compositor is controlled to generate one or more global scene graphs.

### Claim 19 (depends on 12)

The system of claim 12, wherein the one or more computing devices are further configured to load a plurality of processes and the multi-process compositor.

### Claim 20 (depends on 12)

The system of claim 12, wherein the one or more computing devices are further configured to establish for the process a session in the multi-process compositor through the communication channel, wherein the session includes a resource map.