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OPENGL: Fixed alpha problem with overlay RGBA5551 format.

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svn-id: r51290
This commit is contained in:
Alejandro Marzini 2010-07-26 02:16:10 +00:00
parent b89412d7e4
commit c5037d7c6c
1 changed files with 20 additions and 7 deletions
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27
backends/graphics/opengl/opengl-graphics.cpp
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@ -485,13 +485,26 @@ void OpenGLGraphicsManager::copyRectToOverlay(const OverlayColor *buf, int pitch
if (w <= 0 || h <= 0)
return;
// Copy buffer data to internal overlay surface
const byte *src = (byte *)buf;
byte *dst = (byte *)_overlayData.pixels + y * _overlayData.pitch;
for (int i = 0; i < h; i++) {
memcpy(dst + x * _overlayData.bytesPerPixel, src, w * _overlayData.bytesPerPixel);
src += pitch * sizeof(buf[0]);
dst += _overlayData.pitch;
if (_overlayFormat.aBits() == 1) {
// Copy buffer with the alpha bit on for all pixels for correct
// overlay drawing.
const uint16 *src = (uint16 *)buf;
uint16 *dst = (uint16 *)_overlayData.pixels + y * _overlayData.w + x;
for (int i = 0; i < h; i++) {
for (int e = 0; e < w; e++)
dst[e] = src[e] | 0x1;
src += pitch;
dst += _overlayData.w;
}
} else {
// Copy buffer data to internal overlay surface
const byte *src = (byte *)buf;
byte *dst = (byte *)_overlayData.pixels + y * _overlayData.pitch;
for (int i = 0; i < h; i++) {
memcpy(dst + x * _overlayData.bytesPerPixel, src, w * _overlayData.bytesPerPixel);
src += pitch * sizeof(buf[0]);
dst += _overlayData.pitch;
}
}
if (!_overlayNeedsRedraw) {