Commit 7799b33d authored by StapleButter's avatar StapleButter
Browse files

horizontal scrolling for 3D layer

parent d95d2283
......@@ -871,12 +871,30 @@ void GPU2D::DrawPixel(u32* dst, u16 color, u32 flag)
void GPU2D::DrawBG_3D(u32 line, u32* dst)
{
// TODO: scroll, etc
// TODO: window, as for everything
// also check if window can prevent blending from happening
u32* src = GPU3D::GetLine(line);
for (int i = 0; i < 256; i++)
u16 xoff = BGXPos[0];
int i = 0;
int iend = 256;
if (xoff & 0x100)
{
i = (0x100 - (xoff & 0xFF));
xoff += i;
}
if ((xoff + iend - 1) & 0x100)
{
u32 c = src[i];
iend -= (xoff & 0xFF);
}
for (; i < iend; i++)
{
u32 c = src[xoff];
xoff++;
if ((c >> 24) == 0) continue;
dst[i+256] = dst[i];
......
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