void mode1RenderLine()
{
u16 *palette = (u16 *)paletteRAM;
if(DISPCNT & 0x80)
{
for(int x = 0; x < 240; x++)
{
lineMix[x] = 0x7fff;
}
gfxLastVCOUNT = VCOUNT;
return;
}
if(layerEnable & 0x0100)
{
gfxDrawTextScreen(BG0CNT, BG0HOFS, BG0VOFS, line0);
}
if(layerEnable & 0x0200)
{
gfxDrawTextScreen(BG1CNT, BG1HOFS, BG1VOFS, line1);
}
if(layerEnable & 0x0400)
{
int changed = gfxBG2Changed;
if(gfxLastVCOUNT > VCOUNT)
changed = 3;
gfxDrawRotScreen(BG2CNT, BG2X_L, BG2X_H, BG2Y_L, BG2Y_H,
BG2PA, BG2PB, BG2PC, BG2PD,
gfxBG2X, gfxBG2Y, changed, line2);
}
gfxDrawSprites(lineOBJ);
u32 backdrop = (READ16LE(&palette[0]) | 0x30000000);
for(int x = 0; x < 240; x++)
{
u32 color = backdrop;
u8 top = 0x20;
if(line0[x] < color)
{
color = line0[x];
top = 0x01;
}
if((u8)(line1[x]>>24) < (u8)(color >> 24))
{
color = line1[x];
top = 0x02;
}
if((u8)(line2[x]>>24) < (u8)(color >> 24))
{
color = line2[x];
top = 0x04;
}
if((u8)(lineOBJ[x]>>24) < (u8)(color >> 24))
{
color = lineOBJ[x];
top = 0x10;
}
if((top & 0x10) && (color & 0x00010000))
{
// semi-transparent OBJ
u32 back = backdrop;
u8 top2 = 0x20;
if((u8)(line0[x]>>24) < (u8)(back >> 24))
{
back = line0[x];
top2 = 0x01;
}
if((u8)(line1[x]>>24) < (u8)(back >> 24))
{
back = line1[x];
top2 = 0x02;
}
if((u8)(line2[x]>>24) < (u8)(back >> 24))
{
back = line2[x];
top2 = 0x04;
}
if(top2 & (BLDMOD>>8))
color = gfxAlphaBlend(color, back,
coeff[COLEV & 0x1F],
coeff[(COLEV >> 8) & 0x1F]);
else
{
switch((BLDMOD >> 6) & 3)
{
case 2:
if(BLDMOD & top)
color = gfxIncreaseBrightness(color, coeff[COLY & 0x1F]);
break;
case 3:
if(BLDMOD & top)
color = gfxDecreaseBrightness(color, coeff[COLY & 0x1F]);
break;
}
}
}
void mode1RenderLine(MixColorType *lineMix, GBALCD &lcd, const GBAMem::IoMem &ioMem)
{
#ifdef GBALCD_TEMP_LINE_BUFFER
u32 lcd.line0[240];
//gfxClearArray(lcd.line0);
u32 lcd.line1[240];
//gfxClearArray(lcd.line1);
u32 lcd.line2[240];
//gfxClearArray(lcd.line2);
u32 lcd.lineOBJ[240];
#endif
const u16 *palette = (u16 *)lcd.paletteRAM;
const auto BLDMOD = ioMem.BLDMOD;
const auto COLEV = ioMem.COLEV;
const auto COLY = ioMem.COLY;
const auto VCOUNT = ioMem.VCOUNT;
const auto MOSAIC = ioMem.MOSAIC;
const auto DISPCNT = ioMem.DISPCNT;
if(lcd.layerEnable & 0x0100) {
gfxDrawTextScreen(lcd.vram, ioMem.BG0CNT, ioMem.BG0HOFS, ioMem.BG0VOFS, lcd.line0, VCOUNT, MOSAIC, palette);
}
if(lcd.layerEnable & 0x0200) {
gfxDrawTextScreen(lcd.vram, ioMem.BG1CNT, ioMem.BG1HOFS, ioMem.BG1VOFS, lcd.line1, VCOUNT, MOSAIC, palette);
}
if(lcd.layerEnable & 0x0400) {
int changed = lcd.gfxBG2Changed;
if(lcd.gfxLastVCOUNT > VCOUNT)
changed = 3;
gfxDrawRotScreen(lcd.vram, ioMem.BG2CNT, ioMem.BG2X_L, ioMem.BG2X_H, ioMem.BG2Y_L, ioMem.BG2Y_H,
ioMem.BG2PA, ioMem.BG2PB, ioMem.BG2PC, ioMem.BG2PD,
lcd.gfxBG2X, lcd.gfxBG2Y, changed, lcd.line2, VCOUNT, MOSAIC, palette);
}
gfxDrawSprites(lcd, lcd.lineOBJ, VCOUNT, MOSAIC, DISPCNT);
u32 backdrop;
if(customBackdropColor == -1) {
backdrop = (READ16LE(&palette[0]) | 0x30000000);
} else {
backdrop = ((customBackdropColor & 0x7FFF) | 0x30000000);
}
for(int x = 0; x < 240; x++) {
u32 color = backdrop;
u8 top = 0x20;
if(lcd.line0[x] < color) {
color = lcd.line0[x];
top = 0x01;
}
if((u8)(lcd.line1[x]>>24) < (u8)(color >> 24)) {
color = lcd.line1[x];
top = 0x02;
}
if((u8)(lcd.line2[x]>>24) < (u8)(color >> 24)) {
color = lcd.line2[x];
top = 0x04;
}
if((u8)(lcd.lineOBJ[x]>>24) < (u8)(color >> 24)) {
color = lcd.lineOBJ[x];
top = 0x10;
}
if((top & 0x10) && (color & 0x00010000)) {
// semi-transparent OBJ
u32 back = backdrop;
u8 top2 = 0x20;
if((u8)(lcd.line0[x]>>24) < (u8)(back >> 24)) {
back = lcd.line0[x];
top2 = 0x01;
}
if((u8)(lcd.line1[x]>>24) < (u8)(back >> 24)) {
back = lcd.line1[x];
top2 = 0x02;
}
if((u8)(lcd.line2[x]>>24) < (u8)(back >> 24)) {
back = lcd.line2[x];
top2 = 0x04;
}
if(top2 & (BLDMOD>>8))
color = gfxAlphaBlend(color, back,
coeff[COLEV & 0x1F],
coeff[(COLEV >> 8) & 0x1F]);
else {
switch((BLDMOD >> 6) & 3) {
case 2:
if(BLDMOD & top)
color = gfxIncreaseBrightness(color, coeff[COLY & 0x1F]);
break;
case 3:
if(BLDMOD & top)
color = gfxDecreaseBrightness(color, coeff[COLY & 0x1F]);
break;
}
}
}