Vertex shader with primitive replication

• US 10,628,910 B2
• Filed: 09/24/2018
• Issued: 04/21/2020
• Est. Priority Date: 09/24/2018
• Status: Active Grant

• Current Assignee: Intel Corporation
• Original Assignee: Intel Corporation
• Inventors: Bujewski, Tomasz, Drabinski, Radoslaw, Maiyuran, Subramaniam, Garcia Pabon, Jorge, Miyar, Raghavendra, Bajpayee, Rajarshi
• Primary Examiner(s): Crawford, Jacinta M
• Application Number:
  US16/139,818
• Publication Number:
  US 20200098078A1
• Time in Patent Office: 575 Days
• Field of Search: 345426
• CPC Class Codes: G06T 1/20 Processor architectures; Processor configuration, e.g. pipelining
• CPC Class Codes: G06T 1/60 Memory management
• CPC Class Codes: G06T 15/005 General purpose rendering architectures
• CPC Class Codes: G06T 15/80 Shading

Abstract

An embodiment of a semiconductor package apparatus may include technology to determine one or more conditions for a set of primitives, and perform primitive replication at a vertex shader based on the determined one or more conditions for the set of primitives. Other embodiments are disclosed and claimed.

Claims

1. A graphics processor system, comprising:

a processor;

memory communicatively coupled to the processor; and

logic communicatively coupled to the processor and memory to;

determine one or more conditions for a set of primitives;

perform primitive replication at a vertex shader based on the determined one or more conditions for the set of primitives;

determine a first condition based on whether only one or more of a layer or a viewport, together with position output attributes, are changed per emitted vertex in a geometry shader;

determine a second condition based on whether a number of declared emitted vertices in the geometry shader is less than a threshold;

determine a third condition based on whether each vertex from the geometry is emitted into one of a separate render target and a separate viewport; and

determine whether each of the first, second, and third conditions are met, and if met, to;

move operations related to position, layer, viewport calculations, and primitive replication from the geometry shader to the vertex shader; and

move operations related to all other output attributes from the geometry shader to the vertex shader.

2. The system of claim 1, wherein the logic is further to:

reconfigure a graphics pipeline to perform primitive replication at the vertex shader.

3. The system of claim 2, wherein the logic is further to:

configure the vertex shader to generate replicated primitives of original primitives and adjust respective position attributes of the replicated primitives for a second target relative to a first target for the original primitives.

4. The system of claim 3, wherein each of the first and second targets respectively include one or more of a render target and a viewport.

5. A semiconductor package apparatus, comprising:

one or more substrates; and

logic coupled to the one or more substrates, wherein the logic is at least partly implemented in one or more of configurable logic and fixed-functionality hardware logic, the logic coupled to the one or more substrates to;

determine one or more conditions for a set of primitives;

perform primitive replication at a vertex shader based on the determined one or more conditions for the set of primitives;

determine a first condition based on whether only one or more of a layer or a viewport, together with position output attributes, are changed per emitted vertex in a geometry shader;

determine a second condition based on whether a number of declared emitted vertices in the geometry shader is less than a threshold;

determine a third condition based on whether each vertex from the geometry is emitted into one of a separate render target and a separate viewport; and

determine whether each of the first, second, and third conditions are met, and if met, to;

move operations related to position, layer, viewport calculations, and primitive replication from the geometry shader to the vertex shader; and

move operations related to all other output attributes from the geometry shader to the vertex shader.

6. The apparatus of claim 5, wherein the logic is further to:

reconfigure a graphics pipeline to perform primitive replication at the vertex shader.

7. The apparatus of claim 6, wherein the logic is further to:

configure the vertex shader to generate replicated primitives of original primitives and adjust respective position attributes of the replicated primitives for a second target relative to a first target for the original primitives.

8. The apparatus of claim 7, wherein each of the first and second targets respectively include one or more of a render target and a viewport.

9. The apparatus of claim 5, wherein the logic coupled to the one or more substrates includes transistor channel regions that are positioned within the one or more substrates.

10. A method of processing graphics, comprising:

determining one or more conditions for a set of primitives;

performing primitive replication at a vertex shader based on the determined one or more conditions for the set of primitives;

determining a first condition based on whether only one or more of a layer or a viewport, together with position output attributes, are changed per emitted vertex in a geometry shader;

determining a second condition based on whether a number of declared emitted vertices in the geometry shader is less than a threshold;

determining a third condition based on whether each vertex from the geometry is emitted into one of a separate render target and a separate viewport; and

determining whether each of the first, second, and third conditions are met, and if met;

moving operations related to position, layer, viewport calculations, and primitive replication from the geometry shader to the vertex shader; and

moving operations related to all other output attributes from the geometry shader to the vertex shader.

11. The method of claim 10, further comprising:

reconfiguring a graphics pipeline to perform primitive replication at the vertex shader.

12. The method of claim 11, further comprising:

configuring the vertex shader to generate replicated primitives of original primitives and adjust respective position attributes of the replicated primitives for a second target relative to a first target for the original primitives.

13. The method of claim 12, wherein each of the first and second targets respectively include one or more of a render target and a viewport.

14. At least one non-transitory computer readable storage medium, comprising a set of instructions, which when executed by a computing device, cause the computing device to:

determine one or more conditions for a set of primitives;

perform primitive replication at a vertex shader based on the determined one or more conditions for the set of primitives;

determine a first condition based on whether only one or more of a layer or a viewport, together with position output attributes, are changed per emitted vertex in a geometry shader;

determine a second condition based on whether a number of declared emitted vertices in the geometry shader is less than a threshold;

determine a third condition based on whether each vertex from the geometry is emitted into one of a separate render target and a separate viewport; and

determine whether each of the first, second, and third conditions are met, and if met, to;

move operations related to position, layer, viewport calculations, and primitive replication from the geometry shader to the vertex shader; and

move operations related to all other output attributes from the geometry shader to the vertex shader.

15. The at least one non-transitory computer readable storage medium of claim 14, comprising a further set of instructions, which when executed by the computing device, cause the computing device to:

reconfigure a graphics pipeline to perform primitive replication at the vertex shader.

16. The at least one non-transitory computer readable storage medium of claim 15, comprising a further set of instructions, which when executed by the computing device, cause the computing device to:

configure the vertex shader to generate replicated primitives of original primitives and adjust respective position attributes of the replicated primitives for a second target relative to a first target for the original primitives.

17. The at least one non-transitory computer readable storage medium of claim 16, wherein each of the first and second targets respectively include one or more of a render target and a viewport.