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Align FakeMosaicTransition with MosaicTransition (#545)

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The palette is a bit off but I have no strong urge to fix it
This commit is contained in:
Anders Jenbo 2025-07-07 04:59:44 +02:00 committed by GitHub
parent b82cfc4b36
commit c6b94dabcf
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GPG Key ID: B5690EEEBB952194
1 changed files with 115 additions and 87 deletions
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66
LEGO1/lego/legoomni/src/common/mxtransitionmanager.cpp
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@ -701,22 +701,28 @@ void MxTransitionManager::FakeMosaicTransition()
EndTransition(TRUE);
return;
}
else {
if (m_animationTimer == 0) {
g_colorOffset = SDL_rand(32);
for (MxS32 i = 0; i < 64; i++) {
// Same init/shuffle steps as the dissolve transition, except that
// we are using big blocky pixels and only need 64 columns.
MxS32 i;
for (i = 0; i < 64; i++) {
m_columnOrder[i] = i;
}
for (MxS32 i = 0; i < 64; i++) {
for (i = 0; i < 64; i++) {
MxS32 swap = SDL_rand(64);
std::swap(m_columnOrder[i], m_columnOrder[swap]);
}
for (MxS32 i = 0; i < 48; i++) {
m_randomShift[i] = SDL_rand(64);
}
MxU16 t = m_columnOrder[i];
m_columnOrder[i] = m_columnOrder[swap];
m_columnOrder[swap] = t;
}
if (!g_fakeTranstionSurface) {
// The same is true here. We only need 48 rows.
for (i = 0; i < 48; i++) {
m_randomShift[i] = SDL_rand(64);
}
DDSURFACEDESC mainDesc = {};
mainDesc.dwSize = sizeof(mainDesc);
if (m_ddSurface->GetSurfaceDesc(&mainDesc) != DD_OK) {
@ -731,14 +737,35 @@ void MxTransitionManager::FakeMosaicTransition()
tempDesc.ddpfPixelFormat = mainDesc.ddpfPixelFormat;
tempDesc.ddsCaps.dwCaps = DDSCAPS_OFFSCREENPLAIN;
HRESULT hr = MVideoManager()->GetDirectDraw()->CreateSurface(&tempDesc, &g_fakeTranstionSurface, nullptr);
if (hr != DD_OK || !g_fakeTranstionSurface) {
if (MVideoManager()->GetDirectDraw()->CreateSurface(&tempDesc, &g_fakeTranstionSurface, nullptr) != DD_OK) {
return;
}
DWORD fillColor = 0x00000000;
switch (mainDesc.ddpfPixelFormat.dwRGBBitCount) {
case 8:
fillColor = 0x10;
break;
case 16:
fillColor = RGB555_CREATE(0x1f, 0, 0x1f);
break;
}
DDSURFACEDESC ddsd = {};
DDBLTFX bltFx = {};
bltFx.dwSize = sizeof(bltFx);
bltFx.dwFillColor = fillColor;
g_fakeTranstionSurface->Blt(NULL, NULL, NULL, DDBLT_COLORFILL | DDBLT_WAIT, &bltFx);
DDCOLORKEY key = {};
key.dwColorSpaceLowValue = key.dwColorSpaceHighValue = fillColor;
g_fakeTranstionSurface->SetColorKey(DDCKEY_SRCBLT, &key);
}
// Run one tick of the animation
DDSURFACEDESC ddsd;
memset(&ddsd, 0, sizeof(ddsd));
ddsd.dwSize = sizeof(ddsd);
HRESULT res = g_fakeTranstionSurface->Lock(NULL, &ddsd, DDLOCK_WAIT | DDLOCK_WRITEONLY, NULL);
if (res == DDERR_SURFACELOST) {
g_fakeTranstionSurface->Restore();
@ -761,21 +788,21 @@ void MxTransitionManager::FakeMosaicTransition()
MxS32 bytesPerPixel = ddsd.ddpfPixelFormat.dwRGBBitCount / 8;
for (MxS32 col = 0; col < 64; col++) {
// Select 4 columns on each tick
if (m_animationTimer * 4 > m_columnOrder[col]) {
continue;
}
if (m_animationTimer * 4 + 3 < m_columnOrder[col]) {
continue;
}
for (MxS32 row = 0; row < 48; row++) {
int paletteIndex = GetColorIndexWithLocality(col, row);
MxS32 x = (m_randomShift[row] + col) % 64;
MxU8* dest = (MxU8*) ddsd.lpSurface + row * ddsd.lPitch + x * bytesPerPixel;
const MxU8 paletteIndex = GetColorIndexWithLocality(col, row);
const MxU8* color = g_palette[paletteIndex];
MxS32 xShift = (m_randomShift[row] + col) % 64;
MxU8* dest = (MxU8*) ddsd.lpSurface + row * ddsd.lPitch + xShift * bytesPerPixel;
switch (bytesPerPixel) {
case 1:
*dest = paletteIndex;
@ -794,8 +821,9 @@ void MxTransitionManager::FakeMosaicTransition()
g_fakeTranstionSurface->Unlock(ddsd.lpSurface);
RECT srcRect = {0, 0, 64, 48};
m_ddSurface->Blt(&g_fullScreenRect, g_fakeTranstionSurface, &srcRect, DDBLT_WAIT, NULL);
}
m_ddSurface->Blt(&g_fullScreenRect, g_fakeTranstionSurface, &srcRect, DDBLT_WAIT | DDBLT_KEYSRC, NULL);
m_animationTimer++;
}
}
}