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jpark37
9aacc99b3e
The shaders to pack YUV information into the same texture were rather complicated and suffering precision issues. Breaking them up into separate textures makes the shaders much simpler and avoids having to compute large integer offsets. Unfortunately, the code to handle multiple textures is not as pleasant, but at least the NV12 rendering path is no longer separate. In addition, write chroma samples to "standard" offsets. For I444, there's no difference, but I420/NV12 formats now have chroma shifted to the left as 4:2:0 is shown in the H.264 specification. Intel GPA, SetStablePowerState, Intel HD Graphics 530 Expect speed incrase: I420: 844 us -> 493 us (254 us + 190 us + 274 us) I444: 837 us -> 747 us (258 us + 276 us + 272 us) NV12: 450 us -> 368 us (319 us + 168 us) Expect no change: NV12 (HW): 580 (481 us + 166 us) us -> 588 us (468 us + 247 us) RGB: 359 us -> 387 us Fixes https://obsproject.com/mantis/view.php?id=624 Fixes https://obsproject.com/mantis/view.php?id=1512