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[GSP] Add framebuffer dirty flag

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wheremyfoodat 2023-05-02 22:19:43 +03:00
parent c5b612ffaf
commit 2063e84bb1
1 changed files with 22 additions and 4 deletions
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26
src/core/services/gsp_gpu.cpp
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@ -107,10 +107,15 @@ void GPUService::registerInterruptRelayQueue(u32 messagePointer) {
}
void GPUService::requestInterrupt(GPUInterrupt type) {
// HACK: Signal DSP events on GPU interrupt for now until we have the DSP since games need DSP events
// Maybe there's a better alternative?
kernel.signalDSPEvents();
if (sharedMem == nullptr) [[unlikely]] { // Shared memory hasn't been set up yet
return;
}
// TODO: Add support for multiple GSP threads
u8 index = sharedMem[0]; // The interrupt block is normally located at sharedMem + processGSPIndex*0x40
u8& interruptCount = sharedMem[1];
u8 flagIndex = (index + interruptCount) % 0x34;
@ -119,14 +124,27 @@ void GPUService::requestInterrupt(GPUInterrupt type) {
sharedMem[2] = 0; // Set error code to 0
sharedMem[0xC + flagIndex] = static_cast<u8>(type); // Write interrupt type to queue
// Update framebuffer info in shared memory
// Most new games check to make sure that the "flag" byte of the framebuffer info header is set to 0
// Not emulating this causes Yoshi's Wooly World, Captain Toad, Metroid 2 et al to hang
if (type == GPUInterrupt::VBlank0 || type == GPUInterrupt::VBlank1) {
int screen = static_cast<u32>(type) - static_cast<u32>(GPUInterrupt::VBlank0); // 0 for top screen, 1 for bottom
constexpr u32 FBInfoSize = 0x40;
// TODO: Offset depends on GSP thread being triggered
u8* info = &sharedMem[0x200 + screen * FBInfoSize];
u8& dirtyFlag = info[1];
if (dirtyFlag) {
// TODO: Submit buffer info here
dirtyFlag = 0;
}
}
// Signal interrupt event
if (interruptEvent.has_value()) {
kernel.signalEvent(interruptEvent.value());
}
// HACK: Signal DSP events on GPU interrupt for now until we have the DSP since games need DSP events
// Maybe there's a better alternative?
kernel.signalDSPEvents();
}
void GPUService::writeHwRegs(u32 messagePointer) {