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fix #2787953 (2D windows and colour effects on the backdrop)

This commit is contained in:
zeromus 2009-05-06 19:57:08 +00:00
parent 152a7b132f
commit 34ea5aaa5f
1 changed files with 17 additions and 13 deletions
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30
desmume/src/GPU.cpp
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@ -967,7 +967,8 @@ FORCEINLINE void GPU::renderline_checkWindows(u16 x, bool &draw, bool &effect) c
if (withinRect<0>(x))
{
//INFO("bg%i passed win0 : (%i %i) was within (%i %i)(%i %i)\n", bgnum, x, gpu->currLine, gpu->WIN0H0, gpu->WIN0V0, gpu->WIN0H1, gpu->WIN0V1);
draw = (WININ0 >> currBgNum)&1;
draw = (WININ0 >> currBgNum)&1;
if(currBgNum==5) draw = true; //backdrop must always be drawn. windows only control color effects.
effect = (WININ0_SPECIAL);
return;
}
@ -983,6 +984,7 @@ FORCEINLINE void GPU::renderline_checkWindows(u16 x, bool &draw, bool &effect) c
{
//INFO("bg%i passed win1 : (%i %i) was within (%i %i)(%i %i)\n", bgnum, x, gpu->currLine, gpu->WIN1H0, gpu->WIN1V0, gpu->WIN1H1, gpu->WIN1V1);
draw = (WININ1 >> currBgNum)&1;
if(currBgNum==5) draw = true; //backdrop must always be drawn. windows only control color effects.
effect = (WININ1_SPECIAL);
return;
}
@ -996,6 +998,7 @@ FORCEINLINE void GPU::renderline_checkWindows(u16 x, bool &draw, bool &effect) c
if (sprWin[x])
{
draw = (WINOBJ >> currBgNum)&1;
if(currBgNum==5) draw = true; //backdrop must always be drawn. windows only control color effects.
effect = (WINOBJ_SPECIAL);
return;
}
@ -2689,32 +2692,31 @@ static void GPU_ligne_layer(NDS_Screen * screen, u16 l)
u8 sprPrio[256];
u8 prio;
u16 i16;
u32 c;
BOOL BG_enabled = TRUE;
c = T1ReadWord(ARM9Mem.ARM9_VMEM, gpu->core * 0x400) & 0x7FFF;
u16 backdrop_color = T1ReadWord(ARM9Mem.ARM9_VMEM, gpu->core * 0x400) & 0x7FFF;
/* Apply fading to backdrop */
///* Apply fading to backdrop */
if((gpu->BLDCNT & 0x20) && (gpu->BLDY_EVY > 0))
{
switch(gpu->BLDCNT & 0xC0)
{
case 0x80: /* Fade in */
c = fadeInColors[gpu->BLDY_EVY][c];
backdrop_color = fadeInColors[gpu->BLDY_EVY][backdrop_color];
break;
case 0xC0: /* Fade out */
c = fadeOutColors[gpu->BLDY_EVY][c];
backdrop_color = fadeOutColors[gpu->BLDY_EVY][backdrop_color];
break;
default: break;
}
}
//n.b. - this is clearing the screen to the background color,
//but it has been changed to write u32 instead of u16 for a little speedup
for(int i = 0; i< 128; ++i) T2WriteLong(gpu->currDst, i << 2, c | (c<<16));
/* reset them to backdrop */
memset(gpu->bgPixels, 5, 256);
//we need to write backdrop colors in the same way as we do BG pixels in order to
//do correct window processing
gpu->currBgNum = 5;
for(int x=0;x<256;x++) {
gpu->__setFinalColorBck(backdrop_color,x,1);
}
if (!gpu->LayersEnable[0] && !gpu->LayersEnable[1] &&
!gpu->LayersEnable[2] && !gpu->LayersEnable[3] &&
@ -2736,7 +2738,9 @@ static void GPU_ligne_layer(NDS_Screen * screen, u16 l)
{
//n.b. - this is clearing the sprite line buffer to the background color,
//but it has been changed to write u32 instead of u16 for a little speedup
for(int i = 0; i< 128; ++i) T2WriteWord(spr, i << 2, c | (c<<16));
for(int i = 0; i< 128; ++i) T2WriteLong(spr, i << 2, backdrop_color | (backdrop_color<<16));
//zero 06-may-09: I properly supported window color effects for backdrop, but I am not sure
//how it interacts with this. I wish we knew why we needed this
gpu->spriteRender(spr, sprAlpha, sprType, sprPrio);