Full-screen clears measured on a PSP (pspautotests gpu/timing/blittiming):
0.49ms on a 16-bit framebuffer whatever is cleared, 0.69ms on 8888, 1.02ms on
8888 with depth. Charging them may help games that spin hard on an empty
screen, but it's off (chargeClearTime) until tried on some. The video blit
cost moves into the same function, now EstimateFillCycles.
Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>
Movie players like the one in Star Wars: Lethal Alliance present every decoded
frame after a single vblank wait, with no clock or timestamp check, so the
frame rate depends on decode, CSC, ATRAC decode and the GE blit adding up to
more than a vblank. We charged nearly nothing for any of them, so such movies
ran at 60 fps until the ringbuffer's slack ran out.
Costs measured on a PSP with a copy of that player (pspautotests
video/mpeg/playertiming), for a 480x272 frame:
- sceVideocodecDecode: 3.4ms (sceMpegAvcDecode 5.8ms less sceMpegAvcCsc 2.4ms)
- sceMpegBaseCscAvc: 2.4ms, was a flat 4ms
- sceAudiocodecDecode, ATRAC3+ only: 2.5ms per frame
- GE: 9.7ms for a through-mode rectangle blit from a decoded video frame,
charged by area, only for textures in the buffer a decoder last wrote.
GE time also now carries across stall address updates. Before, a list sent
in stalled chunks only had its last chunk's time counted, so sceGeDrawSync
returned 39us after a blit that takes 9.7ms. This affects every game that
builds its lists incrementally, so GE-timing-sensitive games need checking.
Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>
NotifyWriteFormattedFromMemory appends to videos_ unconditionally. A game
blitting its decoded frame to the display buffer does that every displayed
frame while it waits for the next one to decode, so the same two or three
addresses come back over and over: Death Jr pushes 733 entries where there are
two distinct buffers, Tekken 6 around 53,000 where there are three. IsVideo()
walks that vector linearly on every texture. Refresh the matching entry instead
of appending a new one - Death Jr now holds 2 entries and Tekken 6 holds 18,
peak size 2 and 3.
The other half is the two TODOs that were already sitting there. A video
texture is new every frame by definition, so re-hashing it only confirms what
the VIDEO flag already said, and the secondary cache has nothing to offer a
frame that will never recur. Skip both, and with them the secondary lookup that
would otherwise key off a hash we no longer compute.
Co-Authored-By: Claude Opus 5 (1M context) <[email protected]>
Previously, "Smart 2D texture filtering" was limited to through-mode
draws, but many games use fully transformed draws to do 2D elements.
An example of this is Outrun in the menus, and it's always been plagued by
horrible filtering artifacts.
With the improved Smart 2D texture filtering, the artifacts are gone!
Of course, instead of glitchy bilinear you instead get point sampled
texturing so it looks more pixellated, but no more ugly borders between letters
in the game.
Henrik RydgårdandClaude Opus 5.5