Emulation/melonDS
1
0
Fork 0
mirror of https://github.com/melonDS-emu/melonDS.git synced 2024-06-02 19:47:32 -04:00
Code Issues Packages Projects Releases Wiki Activity

opaque shadows only update color buffer

Browse source
This commit is contained in:
Jaklyy 2024-03-13 11:37:57 -04:00
parent 0d0b6534f4
commit d25229d495
1 changed files with 104 additions and 89 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

193
src/GPU3D_Soft.cpp
View file

@ -1206,43 +1206,48 @@ void SoftRenderer::RenderPolygonScanline(const GPU& gpu, RendererPolygon* rp, s3
if (alpha == 31)
{
u32 attr = polyattr | l_edgeflag;
if (gpu.GPU3D.RenderDispCnt & (1<<4))
{
// anti-aliasing: all edges are rendered
// calculate coverage
s32 cov = l_edgecov;
if (cov & (1<<31))
{
cov = xcov >> 5;
if (cov > 31) cov = 31;
xcov += (l_edgecov & 0x3FF);
}
attr |= (cov << 8);
// push old pixel down if needed
if (pixeladdr < BufferSize)
{
ColorBuffer[pixeladdr+BufferSize] = ColorBuffer[pixeladdr];
DepthBuffer[pixeladdr+BufferSize] = DepthBuffer[pixeladdr];
AttrBuffer[pixeladdr+BufferSize] = AttrBuffer[pixeladdr];
}
}
else
{
// update depth buffer solely to fix an ultra niche bug with shadow masks
if (pixeladdr < BufferSize)
DepthBuffer[pixeladdr+BufferSize] = DepthBuffer[pixeladdr];
}
ColorBuffer[pixeladdr] = color;
if (!polygon->IsShadow)
{
u32 attr = polyattr | l_edgeflag;
if (gpu.GPU3D.RenderDispCnt & (1<<4))
{
// anti-aliasing: all edges are rendered
// calculate coverage
s32 cov = l_edgecov;
if (cov & (1<<31))
{
cov = xcov >> 5;
if (cov > 31) cov = 31;
xcov += (l_edgecov & 0x3FF);
}
attr |= (cov << 8);
// push old pixel down if needed
if (pixeladdr < BufferSize)
{
ColorBuffer[pixeladdr+BufferSize] = ColorBuffer[pixeladdr];
DepthBuffer[pixeladdr+BufferSize] = DepthBuffer[pixeladdr];
AttrBuffer[pixeladdr+BufferSize] = AttrBuffer[pixeladdr];
}
}
else
{
// technically the bottom pixel is always updated on hardware
// but it doesn't matter for our purposes, aside from the depth buffer
// and only for a *very* niche quirk of shadow masks
if (pixeladdr < BufferSize)
DepthBuffer[pixeladdr+BufferSize] = DepthBuffer[pixeladdr];
}
DepthBuffer[pixeladdr] = z;
AttrBuffer[pixeladdr] = attr;
}
else if ((gpu.GPU3D.RenderDispCnt & (1<<4)) && (pixeladdr < BufferSize)) // opaque shadows only update the color buffer (CHECKME: verify fog flag isnt updated)
ColorBuffer[pixeladdr+BufferSize] = ColorBuffer[pixeladdr];
ColorBuffer[pixeladdr] = color;
}
else
{
@ -1308,36 +1313,41 @@ void SoftRenderer::RenderPolygonScanline(const GPU& gpu, RendererPolygon* rp, s3
if (alpha == 31)
{
u32 attr = polyattr | c_edgeflag;
if ((gpu.GPU3D.RenderDispCnt & (1<<4)) && ((attr & EF_AnyEdge) || polygon->IsShadow))
{
// anti-aliasing: all edges are rendered
// set coverage to avoid black lines from anti-aliasing
attr |= (0x1F << 8);
// push old pixel down if needed
if (pixeladdr < BufferSize)
{
ColorBuffer[pixeladdr+BufferSize] = ColorBuffer[pixeladdr];
DepthBuffer[pixeladdr+BufferSize] = DepthBuffer[pixeladdr];
AttrBuffer[pixeladdr+BufferSize] = AttrBuffer[pixeladdr];
}
}
else
{
// update depth buffer solely to fix an ultra niche bug with shadow masks
if (pixeladdr < BufferSize)
DepthBuffer[pixeladdr+BufferSize] = DepthBuffer[pixeladdr];
}
ColorBuffer[pixeladdr] = color;
if (!polygon->IsShadow)
{
u32 attr = polyattr | c_edgeflag;
if ((gpu.GPU3D.RenderDispCnt & (1<<4)) && c_edgeflag)
{
// anti-aliasing: all edges are rendered
// set coverage to avoid black lines from anti-aliasing
attr |= (0x1F << 8);
// push old pixel down if needed
if (pixeladdr < BufferSize)
{
ColorBuffer[pixeladdr+BufferSize] = ColorBuffer[pixeladdr];
DepthBuffer[pixeladdr+BufferSize] = DepthBuffer[pixeladdr];
AttrBuffer[pixeladdr+BufferSize] = AttrBuffer[pixeladdr];
}
}
else
{
// technically the bottom pixel is always updated on hardware
// but it doesn't matter for our purposes, aside from the depth buffer
// and only for a *very* niche quirk of shadow masks
if (pixeladdr < BufferSize)
DepthBuffer[pixeladdr+BufferSize] = DepthBuffer[pixeladdr];
}
DepthBuffer[pixeladdr] = z;
AttrBuffer[pixeladdr] = attr;
}
else if ((gpu.GPU3D.RenderDispCnt & (1<<4)) && (pixeladdr < BufferSize)) // opaque shadows only update the color buffer (CHECKME: verify fog flag isnt updated)
ColorBuffer[pixeladdr+BufferSize] = ColorBuffer[pixeladdr];
ColorBuffer[pixeladdr] = color;
}
else
{
@ -1407,43 +1417,48 @@ void SoftRenderer::RenderPolygonScanline(const GPU& gpu, RendererPolygon* rp, s3
if (alpha == 31)
{
u32 attr = polyattr | r_edgeflag;
if (gpu.GPU3D.RenderDispCnt & (1<<4))
{
// anti-aliasing: all edges are rendered
// calculate coverage
s32 cov = r_edgecov;
if (cov & (1<<31))
{
cov = 0x1F - (xcov >> 5);
if (cov < 0) cov = 0;
xcov += (r_edgecov & 0x3FF);
}
attr |= (cov << 8);
// push old pixel down if needed
if (pixeladdr < BufferSize)
{
ColorBuffer[pixeladdr+BufferSize] = ColorBuffer[pixeladdr];
DepthBuffer[pixeladdr+BufferSize] = DepthBuffer[pixeladdr];
AttrBuffer[pixeladdr+BufferSize] = AttrBuffer[pixeladdr];
}
}
else
{
// update depth buffer solely to fix an ultra niche bug with shadow masks
if (pixeladdr < BufferSize)
DepthBuffer[pixeladdr+BufferSize] = DepthBuffer[pixeladdr];
}
ColorBuffer[pixeladdr] = color;
if (!polygon->IsShadow)
{
u32 attr = polyattr | r_edgeflag;
if (gpu.GPU3D.RenderDispCnt & (1<<4))
{
// anti-aliasing: all edges are rendered
// calculate coverage
s32 cov = r_edgecov;
if (cov & (1<<31))
{
cov = 0x1F - (xcov >> 5);
if (cov < 0) cov = 0;
xcov += (r_edgecov & 0x3FF);
}
attr |= (cov << 8);
// push old pixel down if needed
if (pixeladdr < BufferSize)
{
ColorBuffer[pixeladdr+BufferSize] = ColorBuffer[pixeladdr];
DepthBuffer[pixeladdr+BufferSize] = DepthBuffer[pixeladdr];
AttrBuffer[pixeladdr+BufferSize] = AttrBuffer[pixeladdr];
}
}
else
{
// technically the bottom pixel is always updated on hardware
// but it doesn't matter for our purposes, aside from the depth buffer
// and only for a *very* niche quirk of shadow masks
if (pixeladdr < BufferSize)
DepthBuffer[pixeladdr+BufferSize] = DepthBuffer[pixeladdr];
}
DepthBuffer[pixeladdr] = z;
AttrBuffer[pixeladdr] = attr;
}
else if ((gpu.GPU3D.RenderDispCnt & (1<<4)) && (pixeladdr < BufferSize)) // opaque shadows only update the color buffer (CHECKME: verify fog flag isnt updated)
ColorBuffer[pixeladdr+BufferSize] = ColorBuffer[pixeladdr];
ColorBuffer[pixeladdr] = color;
}
else
{