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#177 add support for transparent color conversion blt

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FunkyFr3sh 2022-09-29 00:19:48 +02:00
parent 6dd5174cb8
commit 86996a15be
1 changed files with 82 additions and 2 deletions
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84
src/ddsurface.c
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@ -209,7 +209,48 @@ HRESULT dds_Blt(
HDC src_dc;
dds_GetDC(src_surface, &src_dc);
StretchBlt(dst_dc, dst_x, dst_y, dst_w, dst_h, src_dc, src_x, src_y, src_w, src_h, SRCCOPY);
if ((dwFlags & DDBLT_KEYSRC) || (dwFlags & DDBLT_KEYSRCOVERRIDE))
{
UINT color =
(dwFlags & DDBLT_KEYSRCOVERRIDE) ?
lpDDBltFx->ddckSrcColorkey.dwColorSpaceLowValue : src_surface->color_key.dwColorSpaceLowValue;
if (src_surface->bpp == 32)
{
color = color & 0xFFFFFF;
}
else if (src_surface->bpp == 16)
{
unsigned short c = (unsigned short)color;
BYTE r = ((c & 0xF800) >> 11) << 3;
BYTE g = ((c & 0x07E0) >> 5) << 2;
BYTE b = ((c & 0x001F)) << 3;
color = RGB(r, g, b);
}
else if (src_surface->bpp == 8)
{
RGBQUAD* quad =
src_surface->palette ? src_surface->palette->data_rgb :
g_ddraw->primary && g_ddraw->primary->palette ? g_ddraw->primary->palette->data_rgb :
NULL;
if (quad)
{
unsigned char i = (unsigned char)color;
color = RGB(quad[i].rgbRed, quad[i].rgbGreen, quad[i].rgbBlue);
}
}
GdiTransparentBlt(dst_dc, dst_x, dst_y, dst_w, dst_h, src_dc, src_x, src_y, src_w, src_h, color);
}
else
{
StretchBlt(dst_dc, dst_x, dst_y, dst_w, dst_h, src_dc, src_x, src_y, src_w, src_h, SRCCOPY);
}
/*
StretchBlt(
dst_dc,
@ -461,7 +502,46 @@ HRESULT dds_BltFast(
HDC src_dc;
dds_GetDC(src_surface, &src_dc);
BitBlt(dst_dc, dst_x, dst_y, dst_w, dst_h, src_dc, src_x, src_y, SRCCOPY);
if (dwFlags & DDBLTFAST_SRCCOLORKEY)
{
UINT color = src_surface->color_key.dwColorSpaceLowValue;
if (src_surface->bpp == 32)
{
color = color & 0xFFFFFF;
}
else if (src_surface->bpp == 16)
{
unsigned short c = (unsigned short)color;
BYTE r = ((c & 0xF800) >> 11) << 3;
BYTE g = ((c & 0x07E0) >> 5) << 2;
BYTE b = ((c & 0x001F)) << 3;
color = RGB(r, g, b);
}
else if (src_surface->bpp == 8)
{
RGBQUAD* quad =
src_surface->palette ? src_surface->palette->data_rgb :
g_ddraw->primary && g_ddraw->primary->palette ? g_ddraw->primary->palette->data_rgb :
NULL;
if (quad)
{
unsigned char i = (unsigned char)color;
color = RGB(quad[i].rgbRed, quad[i].rgbGreen, quad[i].rgbBlue);
}
}
GdiTransparentBlt(dst_dc, dst_x, dst_y, dst_w, dst_h, src_dc, src_x, src_y, dst_w, dst_h, color);
}
else
{
BitBlt(dst_dc, dst_x, dst_y, dst_w, dst_h, src_dc, src_x, src_y, SRCCOPY);
}
/*
BitBlt(
dst_dc,