thirdparty/scummvm
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changes to graphics/scaler/thumbnail_intern.cpp that escaped earlier 16-bit merge.

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svn-id: r43788
This commit is contained in:
Jody Northup 2009-08-29 07:23:49 +00:00
parent 174311e325
commit 21e6438a50
1 changed files with 14 additions and 6 deletions
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12
graphics/scaler/thumbnail_intern.cpp
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@ -23,6 +23,7 @@
*
*/
#include "common/endian.h"
#include "common/scummsys.h"
#include "common/system.h"
@ -98,7 +99,8 @@ static bool grabScreen565(Graphics::Surface *surf) {
if (!screen)
return false;
assert(screen->bytesPerPixel == 1 && screen->pixels != 0);
assert(screen->bytesPerPixel == 1 || screen->bytesPerPixel == 2);
assert(screen->pixels != 0);
byte palette[256 * 4];
g_system->grabPalette(&palette[0], 0, 256);
@ -108,10 +110,16 @@ static bool grabScreen565(Graphics::Surface *surf) {
for (uint y = 0; y < screen->h; ++y) {
for (uint x = 0; x < screen->w; ++x) {
byte r, g, b;
if (screen->bytesPerPixel == 2) {
uint16 col = READ_UINT16(screen->getBasePtr(x, y));
r = ((col >> 10) & 0x1F) << 3;
g = ((col >> 5) & 0x1F) << 3;
b = ((col >> 0) & 0x1F) << 3;
} else {
r = palette[((uint8*)screen->pixels)[y * screen->pitch + x] * 4];
g = palette[((uint8*)screen->pixels)[y * screen->pitch + x] * 4 + 1];
b = palette[((uint8*)screen->pixels)[y * screen->pitch + x] * 4 + 2];
}
((uint16*)surf->pixels)[y * surf->w + x] = Graphics::RGBToColor<Graphics::ColorMasks<565> >(r, g, b);
}
}