ShuriZma
/
stella
mirror of https://github.com/stella-emu/stella.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Grey-out old frame contents when stepping by scanline 

git-svn-id: svn://svn.code.sf.net/p/stella/code/trunk@662 8b62c5a3-ac7e-4cc8-8f21-d9a121418aba
This commit is contained in:
urchlay 2005-07-16 23:04:15 +00:00
parent fbd0744474
commit f80c061d85
1 changed files with 14 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
stella/src/emucore/TIA.cxx
View File

@ -13,7 +13,7 @@
// See the file "license" for information on usage and redistribution of
// this file, and for a DISCLAIMER OF ALL WARRANTIES.
//
// $Id: TIA.cxx,v 1.51 2005-07-16 22:35:10 urchlay Exp $
// $Id: TIA.cxx,v 1.52 2005-07-16 23:04:15 urchlay Exp $
//============================================================================
#include <cassert>
@ -574,14 +574,15 @@ void TIA::endFrame() {
void TIA::updateScanline()
{
// Start a new frame if the old one was finished
if(!myPartialFrameFlag)
if(!myPartialFrameFlag) {
startFrame();
// don't leave the old frame contents as a giant turd
clearToBottom();
}
// true either way:
myPartialFrameFlag = true;
// don't leave the old frame contents as a giant turd
clearToBottom();
int totalClocks = (mySystem->cycles() * 3) - myClockWhenFrameStarted;
int endClock = ((totalClocks + 228) / 228) * 228;
@ -1865,9 +1866,18 @@ inline void TIA::waitHorizontalSync()
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
void TIA::clearToBottom()
{
/*
for(int s = scanlines() + 1; s < 300; s++)
for(int i = 0; i < 160; i++)
myCurrentFrameBuffer[s * 160 + i] = 0;
*/
for(int s = scanlines() + 1; s < 300; s++)
for(int i = 0; i < 160; i++) {
uInt8 tmp = myCurrentFrameBuffer[s * 160 + i] & 0x0f;
tmp >>= 1;
myCurrentFrameBuffer[s * 160 + i] = tmp;
}
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -