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Added logic to protect against PPU and NT view windows from crash when being opened with no game loaded.

This commit is contained in:
Matthew Budd 2020-10-06 20:08:17 -04:00
parent c66fc35a40
commit 652cc4f2c9
2 changed files with 23 additions and 19 deletions
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25
src/drivers/Qt/NameTableViewer.cpp
View File

@ -572,15 +572,8 @@ static void DrawNameTable(int scanline, int ntnum, bool invalidateCache)
//obviously this whole scheme of nt cache doesnt work if an mmc5 game is playing tricks with the attribute table
}
//pbitmap += (8*3);
}
//pbitmap += 7*((NTWIDTH*3));
}
//this copies the attribute tables to the cache if needed. but we arent using it now because
//if(redrawtables){
// memcpy(tablecache+0x3c0,table+0x3c0,0x40);
//}
}
//----------------------------------------------------
void FCEUD_UpdateNTView(int scanline, bool drawall)
@ -594,12 +587,8 @@ void FCEUD_UpdateNTView(int scanline, bool drawall)
return;
}
//uint8 *pbitmap = ppuv_palette;
//if (!hNTView) return;
ppu_getScroll(xpos,ypos);
if (NTViewSkip < NTViewRefresh)
{
NTViewSkip++;
@ -618,13 +607,19 @@ void FCEUD_UpdateNTView(int scanline, bool drawall)
memcpy(palcache,PALRAM,32);
drawall = 1; //palette has changed, so redraw all
}
if ( vnapage[0] == NULL )
{
return;
}
ntmirroring = NT_NONE;
if(vnapage[0] == vnapage[1])ntmirroring = NT_HORIZONTAL;
if(vnapage[0] == vnapage[2])ntmirroring = NT_VERTICAL;
if((vnapage[0] != vnapage[1]) && (vnapage[0] != vnapage[2]))ntmirroring = NT_FOUR_SCREEN;
if (vnapage[0] == vnapage[1])ntmirroring = NT_HORIZONTAL;
if (vnapage[0] == vnapage[2])ntmirroring = NT_VERTICAL;
if ((vnapage[0] != vnapage[1]) && (vnapage[0] != vnapage[2]))ntmirroring = NT_FOUR_SCREEN;
if((vnapage[0] == vnapage[1]) && (vnapage[1] == vnapage[2]) && (vnapage[2] == vnapage[3])){
if ((vnapage[0] == vnapage[1]) && (vnapage[1] == vnapage[2]) && (vnapage[2] == vnapage[3]))
{
if(vnapage[0] == &NTARAM[0x000])ntmirroring = NT_SINGLE_SCREEN_TABLE_0;
if(vnapage[0] == &NTARAM[0x400])ntmirroring = NT_SINGLE_SCREEN_TABLE_1;
if(vnapage[0] == ExtraNTARAM)ntmirroring = NT_SINGLE_SCREEN_TABLE_2;

17
src/drivers/Qt/ppuViewer.cpp
View File

@ -510,19 +510,28 @@ void FCEUD_UpdatePPUView(int scanline, int refreshchr)
if (refreshchr)
{
int i10, x10;
for (i = 0, x=0x1000; i < 0x1000; i++, x++)
{
chrcache0[i] = VPage[i>>10][i];
chrcache1[i] = VPage[x>>10][x];
i10 = i>>10;
x10 = x>>10;
if ( VPage[i10] == NULL )
{
continue;
}
chrcache0[i] = VPage[i10][i];
chrcache1[i] = VPage[x10][x];
if (debug_loggingCD)
{
if (cdloggerVideoDataSize)
{
int addr;
addr = &VPage[i >> 10][i] - CHRptr[0];
addr = &VPage[i10][i] - CHRptr[0];
if ((addr >= 0) && (addr < (int)cdloggerVideoDataSize))
logcache0[i] = cdloggervdata[addr];
addr = &VPage[x >> 10][x] - CHRptr[0];
addr = &VPage[x10][x] - CHRptr[0];
if ((addr >= 0) && (addr < (int)cdloggerVideoDataSize))
logcache1[i] = cdloggervdata[addr];
}