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GPU: forward BG0HOFS to internal rendering engine register for 3D layer scroll (only when the rendering engine is enabled).

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fixes #840

thank you RSDuck and Hydr8gon for your insight into this.
This commit is contained in:
Arisotura
2020-12-10 19:12:08 +01:00
parent 1dbe69c6be
commit 66cec85a9a
6 changed files with 81 additions and 37 deletions
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17
src/GPU2D.cpp
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@ -303,8 +303,14 @@ void GPU2D::Write8(u32 addr, u8 val)
case 0x00E: BGCnt[3] = (BGCnt[3] & 0xFF00) | val; return;
case 0x00F: BGCnt[3] = (BGCnt[3] & 0x00FF) | (val << 8); return;
case 0x010: BGXPos[0] = (BGXPos[0] & 0xFF00) | val; return;
case 0x011: BGXPos[0] = (BGXPos[0] & 0x00FF) | (val << 8); return;
case 0x010:
BGXPos[0] = (BGXPos[0] & 0xFF00) | val;
if (Num == 0) GPU3D::SetRenderXPos(BGXPos[0]);
return;
case 0x011:
BGXPos[0] = (BGXPos[0] & 0x00FF) | (val << 8);
if (Num == 0) GPU3D::SetRenderXPos(BGXPos[0]);
return;
case 0x012: BGYPos[0] = (BGYPos[0] & 0xFF00) | val; return;
case 0x013: BGYPos[0] = (BGYPos[0] & 0x00FF) | (val << 8); return;
case 0x014: BGXPos[1] = (BGXPos[1] & 0xFF00) | val; return;
@ -401,7 +407,10 @@ void GPU2D::Write16(u32 addr, u16 val)
case 0x00C: BGCnt[2] = val; return;
case 0x00E: BGCnt[3] = val; return;
case 0x010: BGXPos[0] = val; return;
case 0x010:
BGXPos[0] = val;
if (Num == 0) GPU3D::SetRenderXPos(BGXPos[0]);
return;
case 0x012: BGYPos[0] = val; return;
case 0x014: BGXPos[1] = val; return;
case 0x016: BGYPos[1] = val; return;
@ -716,4 +725,4 @@ void GPU2D::GetOBJVRAM(u8*& data, u32& mask)
data = GPU::VRAMFlat_BOBJ;
mask = 0x1FFFF;
}
}
}