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[BotW] Add external speed overwrite offset to FPS++

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Also lowered the "unlimited" option so that it doesn't cause problems when using that.
This commit is contained in:
Crementif 2021-03-02 01:00:00 +01:00
parent 480c59b578
commit 3e95330b7b
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GPG Key ID: 453870E0401C94C0
2 changed files with 19 additions and 8 deletions
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25
src/BreathOfTheWild/Mods/FPS++/patch_GameSpeed.asm
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@ -6,6 +6,8 @@ moduleMatches = 0x6267BFD0
# Constants
const_0.0:
.float 0.0
const_0.5:
.float 0.5
const_1:
@ -65,13 +67,13 @@ initBuffer:
.byte 0
bufferStart:
.ptr 0xD8
.ptr 0xDC
bufferCurrEntry:
.ptr 0xD8
.ptr 0xDC
bufferEnd:
.ptr 0xD8+(4*$frameAverageAmount)
.ptr 0xDC+(4*$frameAverageAmount)
; Useful for trying potential FPS values. Need to set debugMode = 1 to enable the debugging in the interface and code.
debugAddr:
@ -89,18 +91,27 @@ stw r0, 0x78(r30) ; Execute original instruction that got replaced with a jum
; If static FPS is enabled, always set currently "running" FPS to $fpsLimit
li r3, $staticFPSMode ; Load the $staticFPSMode setting into r3
cmpwi r3, 1 ; Compare with 1, which is when it's enabled
bne _calculateDynamicFPS ; If the comparison is not equal, run
bne _checkExternalSpeed ; If the comparison is not equal, run
lis r3, fpsLimit@ha ; Load current FPS limit...
lfs f10, fpsLimit@l(r3) ; ...into f10
b _setGamespeed ; Skip dynamic FPS code when static mode is enabled and go to the game speed setting code
; If the manual speed has been set by an external program to something other then 0, use that as the static speed
_checkExternalSpeed:
lis r11, const_0.0@ha ; Load a 0 float...
lfs f12, const_0.0@l(r11) ; ...into f12
lfs f10, 0xD0(r30) ; Load the external speed offset
fcmpu cr0, f10, f12 ; Compare the value stored in the external memory offset to 0 (f12)
beq _calculateDynamicFPS ; Compare the
b _setGamespeed
; Calculate speed of current frame (FPS). It's calculated by using the ticks between the previous frame and now, which is stored in r12, and the amount of ticks that the Wii U executes in a second (the bus speed).
_calculateDynamicFPS:
xoris r12, r12, 0x8000 ; Flip the sign bit of int ticks for floating point conversion
stw r12, 0xD4(r30) ; Store sign flipped ticks in memory as lower half of double
stw r12, 0xD8(r30) ; Store sign flipped ticks in memory as lower half of double
lis r12, 0x4330 ; Create upper half of ticks double
stw r12, 0xD0(r30) ; Store it in upper half of memory
lfd f10, 0xD0(r30) ; Load full double ticks into f10
stw r12, 0xD4(r30) ; Store it in upper half of memory
lfd f10, 0xD4(r30) ; Load full double ticks into f10
lis r12, convSub@ha ; Load number to subtract from tick double...
lfd f12, convSub@l(r12) ; ...to create tick float into f12
fsub f10, f10, f12 ; Do the subtraction

2
src/BreathOfTheWild/Mods/FPS++/rules.txt
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@ -132,7 +132,7 @@ $fpsLimit = 20
name = No FPS Limit (for benchmarking)
category = Framerate Limit
condition = $advancedMode == 1
$fpsLimit = 999
$fpsLimit = 500
[Preset]
name = 244FPS (ideal for 244Hz displays)