ScummVM/scummvm
1
0
Fork 0
mirror of https://github.com/scummvm/scummvm.git synced 2026-06-20 05:45:29 +00:00
Code Issues Packages Projects Releases Wiki Activity

GRAPHICS: Use memcpy when copying to same-format-no-alpha destination

Browse Source 
Accelerates when source format is compatible with destination except for
alpha channel bit-loss. Ex:
  from: 32bits A << 24 | R << 16 | G << 8 | B
  to:   32bits           R << 16 | G << 8 | B
This commit is contained in:
Vincent Pelletier
2020-11-12 08:16:52 +01:00
committed by Paweł Kołodziejski
parent 6f8303c2e3
commit 02294ee717
1 changed files with 11 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files
graphics/pixelbuffer.cpp
+11 -1
View File
@@ -87,7 +87,17 @@ void PixelBuffer::clear(int length) {
}
void PixelBuffer::copyBuffer(int thisFrom, int otherFrom, int length, const PixelBuffer &buf) {
if (buf._format == _format) {
if (buf._format.bytesPerPixel == _format.bytesPerPixel &&
buf._format.rShift == _format.rShift &&
buf._format.gShift == _format.gShift &&
buf._format.bShift == _format.bShift &&
buf._format.rLoss == _format.rLoss &&
buf._format.gLoss == _format.gLoss &&
buf._format.bLoss == _format.bLoss && (
_format.aLoss = 8 ||
buf._format.aLoss == _format.aLoss
)
) {
memcpy(_buffer + thisFrom * _format.bytesPerPixel, buf._buffer + otherFrom * _format.bytesPerPixel, length * _format.bytesPerPixel);
} else {
uint8 r, g, b, a;