diff options
Diffstat (limited to 'GPU2D.cpp')
| -rw-r--r-- | GPU2D.cpp | 36 |
1 files changed, 22 insertions, 14 deletions
@@ -26,6 +26,7 @@ // // * BLDCNT special effects are applied on 18bit colors // -> layers are converted to 18bit before being composited +// -> 'brightness up' effect does: x = x + (63-x)*factor // * colors are converted as follows: 18bit = 15bit * 2 // -> white comes out as 62,62,62 and not 63,63,63 // * VRAM/FIFO display modes convert colors the same way @@ -76,8 +77,10 @@ void GPU2D::Reset() memset(BGCnt, 0, 4*2); memset(BGXPos, 0, 4*2); memset(BGYPos, 0, 4*2); - memset(BGXCenter, 0, 2*4); - memset(BGYCenter, 0, 2*4); + memset(BGXRef, 0, 2*4); + memset(BGYRef, 0, 2*4); + memset(BGXRefInternal, 0, 2*4); + memset(BGYRefInternal, 0, 2*4); memset(BGRotA, 0, 2*2); memset(BGRotB, 0, 2*2); memset(BGRotC, 0, 2*2); @@ -209,20 +212,24 @@ void GPU2D::Write32(u32 addr, u32 val) case 0x028: if (val & 0x08000000) val |= 0xF0000000; - BGXCenter[0] = val; + BGXRef[0] = val; + if (GPU::VCount < 192) BGXRefInternal[0] = val; return; case 0x02C: if (val & 0x08000000) val |= 0xF0000000; - BGYCenter[0] = val; + BGYRef[0] = val; + if (GPU::VCount < 192) BGYRefInternal[0] = val; return; case 0x038: if (val & 0x08000000) val |= 0xF0000000; - BGXCenter[1] = val; + BGXRef[1] = val; + if (GPU::VCount < 192) BGXRefInternal[1] = val; return; case 0x03C: if (val & 0x08000000) val |= 0xF0000000; - BGYCenter[1] = val; + BGYRef[1] = val; + if (GPU::VCount < 192) BGYRefInternal[1] = val; return; case 0x064: @@ -366,6 +373,11 @@ void GPU2D::DrawScanline(u32 line) void GPU2D::VBlank() { + BGXRefInternal[0] = BGXRef[0]; + BGXRefInternal[1] = BGXRef[1]; + BGYRefInternal[0] = BGYRef[0]; + BGYRefInternal[1] = BGYRef[1]; + CaptureCnt &= ~(1<<31); } @@ -973,12 +985,8 @@ void GPU2D::DrawBG_Extended(u32 line, u32* dst, u32 bgnum) s16 rotC = BGRotC[bgnum-2]; s16 rotD = BGRotD[bgnum-2]; - s32 rotX = BGXCenter[bgnum-2]; - s32 rotY = BGYCenter[bgnum-2]; - - // hax - rotX += line*rotB; - rotY += line*rotD; + s32 rotX = BGXRefInternal[bgnum-2]; + s32 rotY = BGYRefInternal[bgnum-2]; if (bgcnt & 0x0080) { @@ -1081,8 +1089,8 @@ void GPU2D::DrawBG_Extended(u32 line, u32* dst, u32 bgnum) } } - //BGXCenter[bgnum-2] += rotB; - //BGYCenter[bgnum-2] += rotD; + BGXRefInternal[bgnum-2] += rotB; + BGYRefInternal[bgnum-2] += rotD; } void GPU2D::InterleaveSprites(u32* buf, u32 prio, u32* dst) |