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Gericom
2025-11-22 17:21:45 +01:00
commit 5d6f67c612
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177
arm9/source/gui/VBlankTextureLoader.cpp Normal file
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#include "common.h"
#include <string.h>
#include <libtwl/mem/memVram.h>
#include <libtwl/gfx/gfxStatus.h>
#include <libtwl/dma/dmaNitro.h>
#include "VBlankTextureLoader.h"
#define TEXLOADER_BYTES_PER_LINE 2048
#define TEXLOADER_G3_VBLANK_START_LINE 191
#define TEXLOADER_G3_VBLANK_END_LINE 213
void VBlankTextureLoader::VBlank()
{
rtos_lockMutex(&_mutex);
{
while (true)
{
auto request = _requests.GetHead();
if (!request)
{
_currentRequest = nullptr;
break;
}
if (request->GetState() == VBlankTextureLoadRequestState::Canceled)
{
_currentRequest = nullptr;
continue;
}
if (_currentRequest != request)
{
_currentRequest = request;
_currentLoadingOffset = 0;
_currentLoadingStage = LoadingStage::Texture;
}
if (_currentLoadingStage == LoadingStage::Texture)
{
if (!LoadTexture())
{
break;
}
}
if (_currentRequest->GetState() == VBlankTextureLoadRequestState::Canceled)
{
_currentRequest = nullptr;
continue;
}
if (_currentLoadingStage == LoadingStage::Palette)
{
if (!LoadPalette())
{
break;
}
}
_currentRequest->_state = VBlankTextureLoadRequestState::LoadComplete;
if (_currentRequest->_callbackFunc)
{
_currentRequest->_callbackFunc(_currentRequest, _currentRequest->_callbackArg);
}
_requests.Remove(_currentRequest);
_currentRequest = nullptr;
}
}
rtos_unlockMutex(&_mutex);
}
bool VBlankTextureLoader::LoadTexture()
{
int size = _currentRequest->_textureDataLength - _currentLoadingOffset;
if (size > 0)
{
int line = gfx_getVCount();
if (line >= TEXLOADER_G3_VBLANK_END_LINE)
{
return false;
}
int maxLength = (TEXLOADER_G3_VBLANK_END_LINE - line) * TEXLOADER_BYTES_PER_LINE;
auto vramDMapping = mem_getVramDMapping();
mem_setVramDMapping(MEM_VRAM_D_LCDC);
if (size <= maxLength)
{
dma_ntrCopy32(3,
(u8*)_currentRequest->_textureData + _currentLoadingOffset,
(u8*)0x6860000 + _currentRequest->_textureVramOffset + _currentLoadingOffset,
size);
mem_setVramDMapping(vramDMapping);
}
else
{
dma_ntrCopy32(3,
(u8*)_currentRequest->_textureData + _currentLoadingOffset,
(u8*)0x6860000 + _currentRequest->_textureVramOffset + _currentLoadingOffset,
maxLength);
mem_setVramDMapping(vramDMapping);
_currentLoadingOffset += maxLength;
return false;
}
}
_currentLoadingOffset = 0;
_currentLoadingStage = LoadingStage::Palette;
return true;
}
bool VBlankTextureLoader::LoadPalette()
{
int size = _currentRequest->_paletteDataLength - _currentLoadingOffset;
if (size > 0)
{
int line = gfx_getVCount();
if (line >= TEXLOADER_G3_VBLANK_END_LINE)
{
return false;
}
int maxLength = (TEXLOADER_G3_VBLANK_END_LINE - line) * TEXLOADER_BYTES_PER_LINE;
auto vramEMapping = mem_getVramEMapping();
mem_setVramEMapping(MEM_VRAM_E_LCDC);
if (size <= maxLength)
{
dma_ntrCopy32(3,
(u8*)_currentRequest->_paletteData + _currentLoadingOffset,
(u8*)0x6880000 + _currentRequest->_paletteVramOffset + _currentLoadingOffset,
size);
mem_setVramEMapping(vramEMapping);
}
else
{
dma_ntrCopy32(3,
(u8*)_currentRequest->_paletteData + _currentLoadingOffset,
(u8*)0x6880000 + _currentRequest->_paletteVramOffset + _currentLoadingOffset,
maxLength);
mem_setVramEMapping(vramEMapping);
_currentLoadingOffset += maxLength;
return false;
}
}
return true;
}
void VBlankTextureLoader::RequestLoad(VBlankTextureLoadRequest& request)
{
rtos_lockMutex(&_mutex);
{
if (request._state == VBlankTextureLoadRequestState::NotLoaded)
{
_requests.InsertTail(&request);
request._state = VBlankTextureLoadRequestState::LoadRequested;
}
}
rtos_unlockMutex(&_mutex);
}
void VBlankTextureLoader::CancelLoad(VBlankTextureLoadRequest& request)
{
rtos_lockMutex(&_mutex);
{
if (request._state == VBlankTextureLoadRequestState::LoadRequested || request._state == VBlankTextureLoadRequestState::Loading)
{
_requests.Remove(&request);
request._state = VBlankTextureLoadRequestState::Canceled;
if (_currentRequest == &request)
{
_currentRequest = nullptr;
_currentLoadingOffset = 0;
_currentLoadingStage = LoadingStage::Texture;
}
}
}
rtos_unlockMutex(&_mutex);
}