US 12,444,121 B2
Pre-filtering with anisotropic filter in decoupled shading
Michal Adam Woźniak, Santa Clara, CA (US); and Guennadi Riguer, Markham (CA)
Assigned to Advanced Micro Devices, Inc., Santa Clara, CA (US); and ATI Technologies ULC, Markham (CA)
Filed by Advanced Micro Devices, Inc., Santa Clara, CA (US); and ATI Technologies ULC, Markham (CA)
Filed on Jun. 30, 2023, as Appl. No. 18/345,406.
Prior Publication US 2025/0005838 A1, Jan. 2, 2025
Int. Cl. G06T 15/00 (2011.01); G06T 15/04 (2011.01)
CPC G06T 15/005 (2013.01) [G06T 15/04 (2013.01); G06T 2210/52 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for rendering, the method comprising:
generating, by a processor, a first gradient for a shade space texture tile, wherein the first gradient reflects a relationship between shade space texel spacing and screen space pixel spacing;
generating, by the processor, a second gradient for a shade space texel of the shade space texture tile, wherein the second gradient reflects a relationship between material texel spacing for a material texture and shade space texel spacing;
combining, by the processor, the first gradient and the second gradient to obtain a third gradient; and
performing, by the processor, anisotropic filtering on the material texture using the third gradient to obtain a value for the shade space texel.