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gpu: 5bpp mode

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minjaesong
2025-11-25 09:53:53 +09:00
parent 08bb33bf27
commit e3099195e4
3 changed files with 76 additions and 16 deletions
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8
assets/disk0/tvdos/bin/playtav.js
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@@ -142,7 +142,7 @@ if (fullFilePathStr.startsWith('$:/TAPE') || fullFilePathStr.startsWith('$:\\TAP
con.clear()
con.curs_set(0)
graphics.setGraphicsMode(4) // initially set to 4bpp mode
//graphics.setGraphicsMode(5) // set to 8bpp mode. If GPU don't support it, mode will remain to 4
graphics.setGraphicsMode(5) // then try to set to 5bpp mode
graphics.clearPixels(0)
graphics.clearPixels2(0)
graphics.clearPixels3(0)
@@ -542,9 +542,11 @@ function getRGBfromScr(x, y) {
let offset = y * WIDTH + x
let fb1 = sys.peek(-1048577 - offset)
let fb2 = sys.peek(-1310721 - offset)
let fb3 = sys.peek(-1310721 - (262144 * (gpuGraphicsMode - 4)) - offset)
let fb3 = sys.peek(-1310721 - 262144 - offset)
if (gpuGraphicsMode == 4)
if (gpuGraphicsMode == 5)
return [((fb1 >>> 2) & 31) / 31.0, (((fb1 & 3) << 3) | ((fb2 >>> 5) & 7)) / 31.0, (fb2 & 31) / 31.0]
else if (gpuGraphicsMode == 4)
return [(fb1 >>> 4) / 15.0, (fb1 & 15) / 15.0, (fb2 >>> 4) / 15.0]
else
return [fb1 / 255.0, fb2 / 255.0, fb3 / 255.0]