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Avoid purple edges on scaled down transparent 2D (#694)

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Anders Jenbo 2025-08-21 22:46:35 +02:00 committed by GitHub
parent ef2eaf04bf
commit 8514e5244f
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GPG Key ID: B5690EEEBB952194
1 changed files with 8 additions and 3 deletions
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11
LEGO1/omni/src/video/mxdisplaysurface.cpp
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@ -447,7 +447,8 @@ void MxDisplaySurface::VTable0x28(
palette->Release(); palette->Release();
} }
} }
#else #endif
if (m_surfaceDesc.ddpfPixelFormat.dwRGBBitCount != 32) { if (m_surfaceDesc.ddpfPixelFormat.dwRGBBitCount != 32) {
DDCOLORKEY colorKey; DDCOLORKEY colorKey;
if (m_surfaceDesc.ddpfPixelFormat.dwRGBBitCount == 8) { if (m_surfaceDesc.ddpfPixelFormat.dwRGBBitCount == 8) {
@ -458,7 +459,6 @@ void MxDisplaySurface::VTable0x28(
} }
tempSurface->SetColorKey(DDCKEY_SRCBLT, &colorKey); tempSurface->SetColorKey(DDCKEY_SRCBLT, &colorKey);
} }
#endif
DDSURFACEDESC tempDesc; DDSURFACEDESC tempDesc;
memset(&tempDesc, 0, sizeof(tempDesc)); memset(&tempDesc, 0, sizeof(tempDesc));
@ -571,7 +571,7 @@ void MxDisplaySurface::VTable0x30(
MxBITMAPINFO* bmi = p_bitmap->GetBitmapInfo(); MxBITMAPINFO* bmi = p_bitmap->GetBitmapInfo();
if (bmi) { if (bmi) {
PALETTEENTRY pe[256]; PALETTEENTRY pe[256];
for (int i = 0; i < 256; i++) { for (int i = 1; i < 256; i++) {
pe[i].peRed = bmi->m_bmiColors[i].rgbRed; pe[i].peRed = bmi->m_bmiColors[i].rgbRed;
pe[i].peGreen = bmi->m_bmiColors[i].rgbGreen; pe[i].peGreen = bmi->m_bmiColors[i].rgbGreen;
pe[i].peBlue = bmi->m_bmiColors[i].rgbBlue; pe[i].peBlue = bmi->m_bmiColors[i].rgbBlue;
@ -758,6 +758,11 @@ LPDIRECTDRAWSURFACE MxDisplaySurface::VTable0x44(
pe[i].peBlue = bmi->m_bmiColors[i].rgbBlue; pe[i].peBlue = bmi->m_bmiColors[i].rgbBlue;
pe[i].peFlags = PC_NONE; pe[i].peFlags = PC_NONE;
} }
if (p_transparent) {
pe[0].peRed = 0;
pe[0].peGreen = 0;
pe[0].peBlue = 0;
}
LPDIRECTDRAWPALETTE palette = nullptr; LPDIRECTDRAWPALETTE palette = nullptr;
if (draw->CreatePalette(DDPCAPS_8BIT | DDPCAPS_ALLOW256, pe, &palette, NULL) == DD_OK && palette) { if (draw->CreatePalette(DDPCAPS_8BIT | DDPCAPS_ALLOW256, pe, &palette, NULL) == DD_OK && palette) {
surface->SetPalette(palette); surface->SetPalette(palette);