Pixel Shader Depth Stencil Coverage Data Input
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Solution Overview
Problem
Current pixel shaders do not directly receive depth/stencil test information, leading to suboptimal graphics processing tasks.
Innovation Solution
Modified coverage data from a depth/stencil test is input into a pixel shader, allowing the shader to perform actions based on the modified data, which includes indicating visible subsamples within a multisampled pattern, and the data can be stored for later processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If current pixel shaders do not receive depth/stencil test information, then the device complexity is reduced, but the productivity of graphics processing tasks deteriorates
Solution Approach 1:
The patent extracts depth/stencil test information from the traditional rendering pipeline and directs it specifically to pixel shaders that need it. Instead of communicating all coverage data to all shaders, the system identifies and extracts only the relevant depth/stencil information for specific pixel shader operations, thereby improving productivity without proportionally increasing device complexity.
Solution Approach 2:
The patent introduces an intermediary mechanism that bridges the depth/stencil test unit and pixel shaders. This intermediary selectively routes modified coverage data to pixel shaders based on their specific needs, enabling efficient graphics processing tasks while managing data communication complexity through intelligent mediation rather than direct universal communication.
2Manufacturing precision
If modified coverage data is input into pixel shader, then the manufacturing precision of graphics rendering is improved, but the loss of time for data processing increases
Solution Approach 1:
The patent applies preliminary action by performing depth/stencil tests before pixel shader execution and preparing modified coverage data in advance. This allows pixel shaders to receive pre-processed, ready-to-use coverage information that has already been filtered and modified according to depth/stencil results, improving calculation accuracy while minimizing additional processing time during the critical pixel shading phase.
Data Source
AI summary
A system, method, and computer program product are provided for inputting modified coverage data into a pixel shader. In use, coverage data modified by a depth/stencil test is input into a pixel shader. Additionally, one or more actions are performed at the pixel shader, utilizing the modified coverage data.