Controlling coarse pixel size from a stencil buffer
Systems, apparatuses and methods may provide for technology that determines a stencil value and uses the stencil value to control, via a stencil buffer, a coarse pixel size of a graphics pipeline. Additionally, the stencil value may include a first range of bits defining a first dimension of the coarse pixel size and a second range of bits defining a second dimension of the coarse pixel size. In one example, the coarse pixel size is controlled for a plurality of pixels on a per pixel basis.
1. A system comprising:
a display;
a graphics pipeline coupled to the display; and
logic to:
identify a two-dimensional (2D) texture value,
determine, based on the 2D texture value, a size of a group of pixels that are to share a single pixel shader evaluation, and
conduct the single pixel shader evaluation to generate a value for the group of pixels.
2. The system of claim 1 , wherein the logic is to:
identify different ranges of bits of the 2D texture value that correspond to different dimensions of the group of pixels.
3. The system of claim 1 , wherein the 2D texture value is a single 2D texture value.
4. The system of claim 1 , wherein the 2D texture value is to be determined during a depth analysis of a scene to be rendered.
5. The system of claim 4 , wherein the logic is to:
determine a level of detail for the scene; and
set the 2D texture value based on the level of detail.
6. The system of claim 1 , wherein the logic is to:
retrieve the 2D texture value from a stencil buffer.
7. An apparatus comprising:
a substrate; and
logic coupled to the substrate, wherein the logic is implemented in one or more of configurable logic or fixed-functionality hardware logic, the logic coupled to the substrate to:
identify a two-dimensional (2D) texture value,
determine, based on the 2D texture value, a size of a group of pixels that are to share a single pixel shader evaluation, and
conduct the single pixel shader evaluation to generate a value for the group of pixels.
8. The apparatus of claim 7 , wherein the logic coupled to the substrate is to:
identify different ranges of bits of the 2D texture value that correspond to different dimensions of the group of pixels.
9. The apparatus of claim 7 , wherein the 2D texture value is a single 2D texture value.
10. The apparatus of claim 7 , wherein the 2D texture value is to be determined during a depth analysis of a scene to be rendered.
11. The apparatus of claim 10 , wherein the logic coupled to the substrate is to:
determine a level of detail for the scene; and
set the 2D texture value based on the level of detail.
12. The apparatus of claim 7 , wherein the logic coupled to the substrate is to:
retrieve the 2D texture value from a stencil buffer.
13. At least one non-transitory computer readable storage medium comprising a set of instructions, which when executed by a computing system, cause the computing system to:
identify a two-dimensional (2D) texture value;
determine, based on the 2D texture value, a size of a group of pixels that are to share a single pixel shader evaluation; and
conduct the single pixel shader evaluation to generate a value for the group of pixels.
14. The at least one non-transitory computer readable storage medium of claim 13 , wherein the instructions, when executed, cause the computing system to:
identify different ranges of bits of the 2D texture value that correspond to different dimensions of the group of pixels.
15. The at least one non-transitory computer readable storage medium of claim 13 , wherein the 2D texture value is a single 2D texture value.
16. The at least one non-transitory computer readable storage medium of claim 13 , wherein the 2D texture value is to be determined during a depth analysis of a scene to be rendered.
17. The at least one non-transitory computer readable storage medium of claim 16 , wherein the instructions, when executed, cause the computing system to:
determine a level of detail for the scene; and
set the 2D texture value based on the level of detail.
18. The at least one non-transitory computer readable storage medium of claim 13 , wherein the instructions, when executed, cause the computing system to:
retrieve the 2D texture value from a stencil buffer.
19. A method comprising:
identifying a two-dimensional (2D) texture value;
determining, based on the 2D texture value, a size of a group of pixels that are to share a single pixel shader evaluation; and
conducting, with a graphics pipeline, the single pixel shader evaluation to generate a value for the group of pixels.
20. The method of claim 19 , further comprising:
identifying different ranges of bits of the 2D texture value that correspond to different dimensions of the group of pixels.
21. The method of claim 19 , wherein the 2D texture value is a single 2D texture value.
22. The method of claim 19 , wherein the 2D texture value is determined during a depth analysis of a scene that will be rendered.
23. The method of claim 22 , further comprising:
determining a level of detail for the scene; and
setting the 2D texture value based on the level of detail.
24. The method of claim 19 , further comprising:
retrieving the 2D texture value from a stencil buffer.