Register Indexed Sampler for Dynamic Texture Opcodes
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current graphics processing technologies restrict dynamic selection of texture headers and samplers during shader program execution, limiting flexibility in texture operations, especially when using APIs like Direct X 10, where texture fetch instructions cannot be used within conditional statements.
Innovation Solution
A system and method that allow dynamic specification of texture headers and samplers using indices, enabling each thread in a thread group to use a unique texture header or sampler by storing values in registers and computing them during execution, allowing for dynamic selection and application during texture operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If immediate values are used to specify texture header and sampler, then the instruction is simple and execution is straightforward, but dynamic selection of different texture headers and samplers during shader program execution is not possible
Solution Approach 1:
The texture header and sampler specification is segmented into two parts: an index field in the instruction that selects from a register, and the actual texture header/sampler values stored in a separate register. This allows dynamic selection through the index while keeping the instruction structure relatively simple.
Solution Approach 2:
A register acts as an intermediary between the texture fetch instruction and the actual texture header/sampler values. The instruction specifies an index into this register, which then provides the actual texture header and sampler values, enabling dynamic selection without directly embedding all possible values in each instruction.
2Adaptability or versatility
If texture fetch instructions cannot be used within if-else statements, then the API is simpler to implement, but flexibility in specifying different texture headers and samplers in different execution paths is lost
Solution Approach 1:
The texture header and sampler selection becomes dynamic rather than static. By using an index that can be computed during shader execution, the texture resources selected can change based on runtime conditions, including within if-else statements, making the system adaptive to different execution paths.
Solution Approach 2:
The instruction changes from specifying fixed immediate values for texture header and sampler to specifying an index parameter that points to a register containing the actual values. This parameter change enables dynamic selection based on runtime conditions while maintaining a consistent instruction format.
3Adaptability or versatility
If a single texture header and sampler are specified for all pixels in a thread group, then resource usage is simplified, but the ability to perform varied texture mapping tasks for different pixels is limited
Solution Approach 1:
A single register can serve multiple purposes by storing different texture header and sampler values for different pixels in a thread group. The index mechanism allows one register to provide customized texture resources for each pixel based on the pixel's specific needs, achieving per-pixel variation without requiring separate registers for each pixel.
Data Source
AI summary
One embodiment of the present invention sets forth a technique for dynamically specifying a texture header and texture sampler using an index. The index corresponds to a particular register value that may be static or computed during execution of a shader program. Any texture operation instruction may specify an index value for each of the texture header and the texture sampler.