ShuriZma
/
melonDS
mirror of https://github.com/melonDS-emu/melonDS.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

* fix GXFIFO decoding 

* proper SwapBuffers implementation
* fix polygon clipping
* misc fixes
This commit is contained in:
StapleButter 2017-02-13 02:07:54 +01:00
parent 15c8d59e2b
commit 361ddd7595
6 changed files with 352 additions and 260 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
DMA.cpp
View File

@ -113,7 +113,7 @@ void DMA::Start()
if ((Cnt & 0x00600000) == 0x00600000)
CurDstAddr = DstAddr;
//printf("ARM%d DMA%d %08X %08X->%08X %d bytes %dbit\n", CPU?7:9, Num, Cnt, CurSrcAddr, CurDstAddr, RemCount*((Cnt&0x04000000)?4:2), (Cnt&0x04000000)?32:16);
//printf("ARM%d DMA%d %08X %02X %08X->%08X %d bytes %dbit\n", CPU?7:9, Num, Cnt, StartMode, CurSrcAddr, CurDstAddr, RemCount*((Cnt&0x04000000)?4:2), (Cnt&0x04000000)?32:16);
// special path for cart DMA. this is a gross hack.
// emulating it properly requires emulating cart transfer delays, so uh... TODO

466
GPU3D.cpp
View File

@ -171,6 +171,8 @@ Polygon* CurPolygonRAM;
u32 NumVertices, NumPolygons;
u32 CurRAMBank;
u32 FlushRequest;
bool Init()
@ -234,6 +236,8 @@ void Reset()
NumVertices = 0;
NumPolygons = 0;
FlushRequest = 0;
SoftRenderer::Reset();
}
@ -372,32 +376,39 @@ void UpdateClipMatrix()
template<int comp, s32 plane>
void ClipSegment(Vertex* outbuf, int num, Vertex* vout, Vertex* vin)
{
s32 factor = ((vin->Position[3] - (plane*vin->Position[comp])) << 12) /
((vin->Position[3] - (plane*vin->Position[comp])) - (vout->Position[3] - (plane*vout->Position[comp])));
Vertex mid;
#define INTERPOLATE(var) mid.var = vin->var + (((vout->var - vin->var) * factor) >> 12);
INTERPOLATE(Position[0]);
INTERPOLATE(Position[1]);
INTERPOLATE(Position[2]);
INTERPOLATE(Position[3]);
INTERPOLATE(Color[0]);
INTERPOLATE(Color[1]);
INTERPOLATE(Color[2]);
#undef INTERPOLATE
outbuf[num] = mid;
}
void SubmitPolygon()
{
// clip.
// for each vertex:
// if it's outside, check if the previous and next vertices are inside, if so, fixor
Vertex clippedvertices[20];
Vertex clippedvertices[2][10];
u32 numclipped;
int nverts = PolygonMode & 0x1 ? 4:3;
int nvisible = 0;
/*for (int i = 0; i < nverts; i++)
{
s32* v = TempVertexBuffer[i].Position;
if ((u32)(v[0]+0x1000) <= 0x2000 &&
(u32)(v[1]+0x1000) <= 0x2000 &&
(u32)(v[2]+0x1000) <= 0x2000)
{
nvisible++;
}
}
if (!nvisible) return;*/
int prev, next;
int c;
@ -407,76 +418,51 @@ void SubmitPolygon()
for (int i = 0; i < nverts; i++)
{
Vertex vtx = TempVertexBuffer[i];
if (vtx.Position[0] > 0x1000)
if (vtx.Position[0] > vtx.Position[3])
{
Vertex* vprev = &TempVertexBuffer[prev];
if (vprev->Position[0] <= 0x1000)
if (vprev->Position[0] <= vprev->Position[3])
{
s32 factor = ((0x1000 - vprev->Position[0]) << 12) / (vtx.Position[0] - vprev->Position[0]);
Vertex mid;
mid.Position[0] = 0x1000;
mid.Position[1] = vprev->Position[1] + (((vtx.Position[1] - vprev->Position[1]) * factor) >> 12);
mid.Position[2] = vprev->Position[2] + (((vtx.Position[2] - vprev->Position[2]) * factor) >> 12);
mid.Color[0] = vprev->Color[0] + (((vtx.Color[0] - vprev->Color[0]) * factor) >> 12);
mid.Color[1] = vprev->Color[1] + (((vtx.Color[1] - vprev->Color[1]) * factor) >> 12);
mid.Color[2] = vprev->Color[2] + (((vtx.Color[2] - vprev->Color[2]) * factor) >> 12);
clippedvertices[c++] = mid;
ClipSegment<0, 1>(clippedvertices[0], c, &vtx, vprev);
c++;
}
Vertex* vnext = &TempVertexBuffer[next];
if (vnext->Position[0] <= 0x1000)
if (vnext->Position[0] <= vnext->Position[3])
{
s32 factor = ((0x1000 - vnext->Position[0]) << 12) / (vtx.Position[0] - vnext->Position[0]);
Vertex mid;
mid.Position[0] = 0x1000;
mid.Position[1] = vnext->Position[1] + (((vtx.Position[1] - vnext->Position[1]) * factor) >> 12);
mid.Position[2] = vnext->Position[2] + (((vtx.Position[2] - vnext->Position[2]) * factor) >> 12);
mid.Color[0] = vnext->Color[0] + (((vtx.Color[0] - vnext->Color[0]) * factor) >> 12);
mid.Color[1] = vnext->Color[1] + (((vtx.Color[1] - vnext->Color[1]) * factor) >> 12);
mid.Color[2] = vnext->Color[2] + (((vtx.Color[2] - vnext->Color[2]) * factor) >> 12);
clippedvertices[c++] = mid;
}
}
else if (vtx.Position[0] < -0x1000)
{
Vertex* vprev = &TempVertexBuffer[prev];
if (vprev->Position[0] >= -0x1000)
{
s32 factor = ((-0x1000 - vprev->Position[0]) << 12) / (vtx.Position[0] - vprev->Position[0]);
Vertex mid;
mid.Position[0] = -0x1000;
mid.Position[1] = vprev->Position[1] + (((vtx.Position[1] - vprev->Position[1]) * factor) >> 12);
mid.Position[2] = vprev->Position[2] + (((vtx.Position[2] - vprev->Position[2]) * factor) >> 12);
mid.Color[0] = vprev->Color[0] + (((vtx.Color[0] - vprev->Color[0]) * factor) >> 12);
mid.Color[1] = vprev->Color[1] + (((vtx.Color[1] - vprev->Color[1]) * factor) >> 12);
mid.Color[2] = vprev->Color[2] + (((vtx.Color[2] - vprev->Color[2]) * factor) >> 12);
clippedvertices[c++] = mid;
}
Vertex* vnext = &TempVertexBuffer[next];
if (vnext->Position[0] >= -0x1000)
{
s32 factor = ((-0x1000 - vnext->Position[0]) << 12) / (vtx.Position[0] - vnext->Position[0]);
Vertex mid;
mid.Position[0] = -0x1000;
mid.Position[1] = vnext->Position[1] + (((vtx.Position[1] - vnext->Position[1]) * factor) >> 12);
mid.Position[2] = vnext->Position[2] + (((vtx.Position[2] - vnext->Position[2]) * factor) >> 12);
mid.Color[0] = vnext->Color[0] + (((vtx.Color[0] - vnext->Color[0]) * factor) >> 12);
mid.Color[1] = vnext->Color[1] + (((vtx.Color[1] - vnext->Color[1]) * factor) >> 12);
mid.Color[2] = vnext->Color[2] + (((vtx.Color[2] - vnext->Color[2]) * factor) >> 12);
clippedvertices[c++] = mid;
ClipSegment<0, 1>(clippedvertices[0], c, &vtx, vnext);
c++;
}
}
else
clippedvertices[c++] = vtx;
clippedvertices[0][c++] = vtx;
prev++; if (prev >= nverts) prev = 0;
next++; if (next >= nverts) next = 0;
}
nverts = c; prev = nverts-1; next = 1; c = 0;
for (int i = 0; i < nverts; i++)
{
Vertex vtx = clippedvertices[0][i];
if (vtx.Position[0] < -vtx.Position[3])
{
Vertex* vprev = &clippedvertices[0][prev];
if (vprev->Position[0] >= -vprev->Position[3])
{
ClipSegment<0, -1>(clippedvertices[1], c, &vtx, vprev);
c++;
}
Vertex* vnext = &clippedvertices[0][next];
if (vnext->Position[0] >= -vnext->Position[3])
{
ClipSegment<0, -1>(clippedvertices[1], c, &vtx, vnext);
c++;
}
}
else
clippedvertices[1][c++] = vtx;
prev++; if (prev >= nverts) prev = 0;
next++; if (next >= nverts) next = 0;
@ -484,81 +470,55 @@ void SubmitPolygon()
// Y clipping
nverts = c;
prev = nverts-1; next = 1; c = 10;
nverts = c; prev = nverts-1; next = 1; c = 0;
for (int i = 0; i < nverts; i++)
{
Vertex vtx = clippedvertices[i];
if (vtx.Position[1] > 0x1000)
Vertex vtx = clippedvertices[1][i];
if (vtx.Position[1] > vtx.Position[3])
{
Vertex* vprev = &clippedvertices[prev];
if (vprev->Position[1] <= 0x1000)
Vertex* vprev = &clippedvertices[1][prev];
if (vprev->Position[1] <= vprev->Position[3])
{
s32 factor = ((0x1000 - vprev->Position[1]) << 12) / (vtx.Position[1] - vprev->Position[1]);
Vertex mid;
mid.Position[0] = vprev->Position[0] + (((vtx.Position[0] - vprev->Position[0]) * factor) >> 12);
mid.Position[1] = 0x1000;
mid.Position[2] = vprev->Position[2] + (((vtx.Position[2] - vprev->Position[2]) * factor) >> 12);
mid.Color[0] = vprev->Color[0] + (((vtx.Color[0] - vprev->Color[0]) * factor) >> 12);
mid.Color[1] = vprev->Color[1] + (((vtx.Color[1] - vprev->Color[1]) * factor) >> 12);
mid.Color[2] = vprev->Color[2] + (((vtx.Color[2] - vprev->Color[2]) * factor) >> 12);
clippedvertices[c++] = mid;
ClipSegment<1, 1>(clippedvertices[0], c, &vtx, vprev);
c++;
}
Vertex* vnext = &clippedvertices[next];
if (vnext->Position[1] <= 0x1000)
Vertex* vnext = &clippedvertices[1][next];
if (vnext->Position[1] <= vnext->Position[3])
{
s32 factor = ((0x1000 - vnext->Position[1]) << 12) / (vtx.Position[1] - vnext->Position[1]);
Vertex mid;
mid.Position[0] = vnext->Position[0] + (((vtx.Position[0] - vnext->Position[0]) * factor) >> 12);
mid.Position[1] = 0x1000;
mid.Position[2] = vnext->Position[2] + (((vtx.Position[2] - vnext->Position[2]) * factor) >> 12);
mid.Color[0] = vnext->Color[0] + (((vtx.Color[0] - vnext->Color[0]) * factor) >> 12);
mid.Color[1] = vnext->Color[1] + (((vtx.Color[1] - vnext->Color[1]) * factor) >> 12);
mid.Color[2] = vnext->Color[2] + (((vtx.Color[2] - vnext->Color[2]) * factor) >> 12);
clippedvertices[c++] = mid;
}
}
else if (vtx.Position[1] < -0x1000)
{
Vertex* vprev = &clippedvertices[prev];
if (vprev->Position[1] >= -0x1000)
{
s32 factor = ((-0x1000 - vprev->Position[1]) << 12) / (vtx.Position[1] - vprev->Position[1]);
Vertex mid;
mid.Position[0] = vprev->Position[0] + (((vtx.Position[0] - vprev->Position[0]) * factor) >> 12);
mid.Position[1] = -0x1000;
mid.Position[2] = vprev->Position[2] + (((vtx.Position[2] - vprev->Position[2]) * factor) >> 12);
mid.Color[0] = vprev->Color[0] + (((vtx.Color[0] - vprev->Color[0]) * factor) >> 12);
mid.Color[1] = vprev->Color[1] + (((vtx.Color[1] - vprev->Color[1]) * factor) >> 12);
mid.Color[2] = vprev->Color[2] + (((vtx.Color[2] - vprev->Color[2]) * factor) >> 12);
clippedvertices[c++] = mid;
}
Vertex* vnext = &clippedvertices[next];
if (vnext->Position[1] >= -0x1000)
{
s32 factor = ((-0x1000 - vnext->Position[1]) << 12) / (vtx.Position[1] - vnext->Position[1]);
Vertex mid;
mid.Position[0] = vnext->Position[0] + (((vtx.Position[0] - vnext->Position[0]) * factor) >> 12);
mid.Position[1] = -0x1000;
mid.Position[2] = vnext->Position[2] + (((vtx.Position[2] - vnext->Position[2]) * factor) >> 12);
mid.Color[0] = vnext->Color[0] + (((vtx.Color[0] - vnext->Color[0]) * factor) >> 12);
mid.Color[1] = vnext->Color[1] + (((vtx.Color[1] - vnext->Color[1]) * factor) >> 12);
mid.Color[2] = vnext->Color[2] + (((vtx.Color[2] - vnext->Color[2]) * factor) >> 12);
clippedvertices[c++] = mid;
ClipSegment<1, 1>(clippedvertices[0], c, &vtx, vnext);
c++;
}
}
else
clippedvertices[c++] = vtx;
clippedvertices[0][c++] = vtx;
prev++; if (prev >= nverts) prev = 0;
next++; if (next >= nverts) next = 0;
}
nverts = c; prev = nverts-1; next = 1; c = 0;
for (int i = 0; i < nverts; i++)
{
Vertex vtx = clippedvertices[0][i];
if (vtx.Position[1] < -vtx.Position[3])
{
Vertex* vprev = &clippedvertices[0][prev];
if (vprev->Position[1] >= -vprev->Position[3])
{
ClipSegment<1, -1>(clippedvertices[1], c, &vtx, vprev);
c++;
}
Vertex* vnext = &clippedvertices[0][next];
if (vnext->Position[1] >= -vnext->Position[3])
{
ClipSegment<1, -1>(clippedvertices[1], c, &vtx, vnext);
c++;
}
}
else
clippedvertices[1][c++] = vtx;
prev++; if (prev >= nverts) prev = 0;
next++; if (next >= nverts) next = 0;
@ -566,81 +526,55 @@ void SubmitPolygon()
// Z clipping
nverts = c-10;
prev = nverts-1; next = 1; c = 0;
nverts = c; prev = nverts-1; next = 1; c = 0;
for (int i = 0; i < nverts; i++)
{
Vertex vtx = clippedvertices[10+i];
if (vtx.Position[2] > 0x1000)
Vertex vtx = clippedvertices[1][i];
if (vtx.Position[2] > vtx.Position[3])
{
Vertex* vprev = &clippedvertices[10+prev];
if (vprev->Position[2] <= 0x1000)
Vertex* vprev = &clippedvertices[1][prev];
if (vprev->Position[2] <= vprev->Position[3])
{
s32 factor = ((0x1000 - vprev->Position[2]) << 12) / (vtx.Position[2] - vprev->Position[2]);
Vertex mid;
mid.Position[0] = vprev->Position[0] + (((vtx.Position[0] - vprev->Position[0]) * factor) >> 12);
mid.Position[1] = vprev->Position[1] + (((vtx.Position[1] - vprev->Position[1]) * factor) >> 12);
mid.Position[2] = 0x1000;
mid.Color[0] = vprev->Color[0] + (((vtx.Color[0] - vprev->Color[0]) * factor) >> 12);
mid.Color[1] = vprev->Color[1] + (((vtx.Color[1] - vprev->Color[1]) * factor) >> 12);
mid.Color[2] = vprev->Color[2] + (((vtx.Color[2] - vprev->Color[2]) * factor) >> 12);
clippedvertices[c++] = mid;
ClipSegment<2, 1>(clippedvertices[0], c, &vtx, vprev);
c++;
}
Vertex* vnext = &clippedvertices[10+next];
if (vnext->Position[2] <= 0x1000)
Vertex* vnext = &clippedvertices[1][next];
if (vnext->Position[2] <= vnext->Position[3])
{
s32 factor = ((0x1000 - vnext->Position[2]) << 12) / (vtx.Position[2] - vnext->Position[2]);
Vertex mid;
mid.Position[0] = vnext->Position[0] + (((vtx.Position[0] - vnext->Position[0]) * factor) >> 12);
mid.Position[1] = vnext->Position[1] + (((vtx.Position[1] - vnext->Position[1]) * factor) >> 12);
mid.Position[2] = 0x1000;
mid.Color[0] = vnext->Color[0] + (((vtx.Color[0] - vnext->Color[0]) * factor) >> 12);
mid.Color[1] = vnext->Color[1] + (((vtx.Color[1] - vnext->Color[1]) * factor) >> 12);
mid.Color[2] = vnext->Color[2] + (((vtx.Color[2] - vnext->Color[2]) * factor) >> 12);
clippedvertices[c++] = mid;
}
}
else if (vtx.Position[2] < -0x1000)
{
Vertex* vprev = &clippedvertices[10+prev];
if (vprev->Position[2] >= -0x1000)
{
s32 factor = ((-0x1000 - vprev->Position[2]) << 12) / (vtx.Position[2] - vprev->Position[2]);
Vertex mid;
mid.Position[0] = vprev->Position[0] + (((vtx.Position[0] - vprev->Position[0]) * factor) >> 12);
mid.Position[1] = vprev->Position[1] + (((vtx.Position[1] - vprev->Position[1]) * factor) >> 12);
mid.Position[2] = -0x1000;
mid.Color[0] = vprev->Color[0] + (((vtx.Color[0] - vprev->Color[0]) * factor) >> 12);
mid.Color[1] = vprev->Color[1] + (((vtx.Color[1] - vprev->Color[1]) * factor) >> 12);
mid.Color[2] = vprev->Color[2] + (((vtx.Color[2] - vprev->Color[2]) * factor) >> 12);
clippedvertices[c++] = mid;
}
Vertex* vnext = &clippedvertices[10+next];
if (vnext->Position[2] >= -0x1000)
{
s32 factor = ((-0x1000 - vnext->Position[2]) << 12) / (vtx.Position[2] - vnext->Position[2]);
Vertex mid;
mid.Position[0] = vnext->Position[0] + (((vtx.Position[0] - vnext->Position[0]) * factor) >> 12);
mid.Position[1] = vnext->Position[1] + (((vtx.Position[1] - vnext->Position[1]) * factor) >> 12);
mid.Position[2] = -0x1000;
mid.Color[0] = vnext->Color[0] + (((vtx.Color[0] - vnext->Color[0]) * factor) >> 12);
mid.Color[1] = vnext->Color[1] + (((vtx.Color[1] - vnext->Color[1]) * factor) >> 12);
mid.Color[2] = vnext->Color[2] + (((vtx.Color[2] - vnext->Color[2]) * factor) >> 12);
clippedvertices[c++] = mid;
ClipSegment<2, 1>(clippedvertices[0], c, &vtx, vnext);
c++;
}
}
else
clippedvertices[c++] = vtx;
clippedvertices[0][c++] = vtx;
prev++; if (prev >= nverts) prev = 0;
next++; if (next >= nverts) next = 0;
}
nverts = c; prev = nverts-1; next = 1; c = 0;
for (int i = 0; i < nverts; i++)
{
Vertex vtx = clippedvertices[0][i];
if (vtx.Position[2] < -vtx.Position[3])
{
Vertex* vprev = &clippedvertices[0][prev];
if (vprev->Position[2] >= -vprev->Position[3])
{
ClipSegment<2, -1>(clippedvertices[1], c, &vtx, vprev);
c++;
}
Vertex* vnext = &clippedvertices[0][next];
if (vnext->Position[2] >= -vnext->Position[3])
{
ClipSegment<2, -1>(clippedvertices[1], c, &vtx, vnext);
c++;
}
}
else
clippedvertices[1][c++] = vtx;
prev++; if (prev >= nverts) prev = 0;
next++; if (next >= nverts) next = 0;
@ -659,7 +593,7 @@ void SubmitPolygon()
for (int i = 0; i < c; i++)
{
CurVertexRAM[NumVertices] = clippedvertices[i];
CurVertexRAM[NumVertices] = clippedvertices[1][i];
poly->Vertices[i] = &CurVertexRAM[NumVertices];
NumVertices++;
@ -673,6 +607,8 @@ void SubmitVertex()
//s32 vertextrans[4];
Vertex* vertextrans = &TempVertexBuffer[VertexNumInPoly];
if (PolygonMode & 0x2) return;
//printf("vertex: %f %f %f\n", vertex[0]/4096.0f, vertex[1]/4096.0f, vertex[2]/4096.0f);
UpdateClipMatrix();
@ -681,15 +617,23 @@ void SubmitVertex()
vertextrans->Position[2] = (vertex[0]*ClipMatrix[2] + vertex[1]*ClipMatrix[6] + vertex[2]*ClipMatrix[10] + vertex[3]*ClipMatrix[14]) >> 12;
vertextrans->Position[3] = (vertex[0]*ClipMatrix[3] + vertex[1]*ClipMatrix[7] + vertex[2]*ClipMatrix[11] + vertex[3]*ClipMatrix[15]) >> 12;
s32 w_inv;
/*printf("vertex fart: %f %f %f %f\n",
vertextrans->Position[0]/4096.0f,
vertextrans->Position[1]/4096.0f,
vertextrans->Position[2]/4096.0f,
vertextrans->Position[3]/4096.0f);*/
/*s32 w_inv;
if (vertextrans->Position[3] == 0)
w_inv = 0x1000; // checkme
else if(vertextrans->Position[3] < 0)
w_inv = 0x1000000 / -vertextrans->Position[3];
else
w_inv = 0x1000000 / vertextrans->Position[3];
vertextrans->Position[0] = (vertextrans->Position[0] * w_inv) >> 12;
vertextrans->Position[1] = (vertextrans->Position[1] * w_inv) >> 12;
vertextrans->Position[2] = (vertextrans->Position[2] * w_inv) >> 12;
vertextrans->Position[2] = (vertextrans->Position[2] * w_inv) >> 12;*/
vertextrans->Color[0] = VertexColor[0];
vertextrans->Color[1] = VertexColor[1];
@ -699,7 +643,12 @@ void SubmitVertex()
vertextrans->Position[0]/4096.0f,
vertextrans->Position[1]/4096.0f,
vertextrans->Position[2]/4096.0f,
vertextrans->Position[3]/4096.0f);*/
vertextrans->Position[3]/4096.0f);
printf("clip: %f %f %f %f\n",
ClipMatrix[3]/4096.0f,
ClipMatrix[7]/4096.0f,
ClipMatrix[11]/4096.0f,
ClipMatrix[15]/4096.0f);*/
/*if (vertextrans[3] == 0)
{
@ -724,10 +673,48 @@ void SubmitVertex()
VertexNum++;
VertexNumInPoly++;
if (VertexNumInPoly >= (PolygonMode & 0x1 ? 4:3))
switch (PolygonMode)
{
VertexNumInPoly = (PolygonMode & 0x2 ? 2:0);
SubmitPolygon();
case 0: // triangle
if (VertexNumInPoly == 3)
{
VertexNumInPoly = 0;
SubmitPolygon();
}
break;
case 1: // quad
if (VertexNumInPoly == 4)
{
VertexNumInPoly = 0;
SubmitPolygon();
}
break;
/*case 2: // triangle strip
if (VertexNum > 3)
{
if (VertexNumInPoly == 1)
{
VertexNumInPoly = 0;
// reorder
}
else
VertexNumInPoly = 0;
SubmitPolygon();
}
else if (VertexNum == 3)
{
VertexNumInPoly = 2;
SubmitPolygon();
TempVertexBuffer[0] = TempVertexBuffer[1];
TempVertexBuffer[1] = TempVertexBuffer[2];
}
break;*/
default: VertexNumInPoly = 0; break;
}
}
@ -738,12 +725,14 @@ void CmdFIFOWrite(CmdFIFOEntry& entry)
if (CmdFIFO->IsEmpty() && !CmdPIPE->IsFull())
{
CmdPIPE->Write(entry);
GXStat |= (1<<27);
}
else
{
if (CmdFIFO->IsFull())
{
printf("!!! GX FIFO FULL\n");
//NDS::debug(0);
return;
}
@ -775,6 +764,8 @@ void ExecuteCommand()
{
CmdFIFOEntry entry = CmdFIFORead();
//printf("FIFO: %02X %08X\n", entry.Command, entry.Param);
ExecParams[ExecParamCount] = entry.Param;
ExecParamCount++;
@ -784,6 +775,8 @@ void ExecuteCommand()
ExecParamCount = 0;
GXStat &= ~(1<<14);
//if (CycleCount > 0)
// GXStat |= (1<<27);
//printf("3D CMD %02X\n", entry.Command);
@ -1121,7 +1114,7 @@ void ExecuteCommand()
break;
case 0x50:
// TODO: make it happen upon VBlank, not right now
FlushRequest = 1;//0x80000000 | (ExecParams[0] & 0x3);
break;
case 0x60: // viewport x1,y1,x2,y2
@ -1145,7 +1138,11 @@ void Run(s32 cycles)
CycleCount -= cycles;
if (CycleCount <= 0 && CmdPIPE->IsEmpty())
{
CycleCount = 0;
if (!FlushRequest)
GXStat &= ~(1<<27);
}
}
@ -1170,15 +1167,20 @@ void CheckFIFODMA()
void VBlank()
{
// TODO: only do this if a SwapBuffers command was issued
SoftRenderer::RenderFrame(CurVertexRAM, CurPolygonRAM, NumPolygons);
if (FlushRequest)
{
SoftRenderer::RenderFrame(CurVertexRAM, CurPolygonRAM, NumPolygons);
CurRAMBank = CurRAMBank?0:1;
CurVertexRAM = &VertexRAM[CurRAMBank ? 6144 : 0];
CurPolygonRAM = &PolygonRAM[CurRAMBank ? 2048 : 0];
CurRAMBank = CurRAMBank?0:1;
CurVertexRAM = &VertexRAM[CurRAMBank ? 6144 : 0];
CurPolygonRAM = &PolygonRAM[CurRAMBank ? 2048 : 0];
NumVertices = 0;
NumPolygons = 0;
NumVertices = 0;
NumPolygons = 0;
FlushRequest = 0;
GXStat &= ~(1<<27);
}
}
u8* GetLine(int line)
@ -1213,8 +1215,7 @@ u32 Read32(u32 addr)
((ProjMatrixStackPointer & 0x1) << 13) |
(fifolevel << 16) |
(fifolevel < 128 ? (1<<25) : 0) |
(fifolevel == 0 ? (1<<26) : 0) |
(CycleCount > 0 ? (1<<27) : 0);
(fifolevel == 0 ? (1<<26) : 0);
}
}
@ -1262,23 +1263,30 @@ void Write32(u32 addr, u32 val)
CurCommand = val;
ParamCount = 0;
TotalParams = CmdNumParams[CurCommand & 0xFF];
if (TotalParams > 0) return;
}
else
ParamCount++;
while (ParamCount == TotalParams)
for (;;)
{
CmdFIFOEntry entry;
entry.Command = CurCommand & 0xFF;
entry.Param = val;
CmdFIFOWrite(entry);
CurCommand >>= 8;
NumCommands--;
if (NumCommands == 0) break;
if (ParamCount >= TotalParams)
{
CurCommand >>= 8;
NumCommands--;
if (NumCommands == 0) break;
ParamCount = 0;
TotalParams = CmdNumParams[CurCommand & 0xFF];
ParamCount = 0;
TotalParams = CmdNumParams[CurCommand & 0xFF];
}
if (ParamCount < TotalParams)
break;
}
return;

109
GPU3D_Soft.cpp
View File

@ -50,9 +50,9 @@ void RenderPolygon(Polygon* polygon)
{
int nverts = polygon->NumVertices;
int vtop, vbot;
int vtop = 0, vbot = 0;
s32 ytop = 191, ybot = 0;
s32 scrcoords[10][3];
s32 scrcoords[10][4];
// find the topmost and bottommost vertices of the polygon
@ -60,14 +60,36 @@ void RenderPolygon(Polygon* polygon)
{
Vertex* vtx = polygon->Vertices[i];
s32 scrX = (((vtx->Position[0] + 0x1000) * Viewport[2]) >> 13) + Viewport[0];
s32 scrY = (((vtx->Position[1] + 0x1000) * Viewport[3]) >> 13) + Viewport[1];
s32 w_inv;
if (vtx->Position[3] == 0)
{
w_inv = 0x1000; // checkme
printf("!! W=0\n");
}
else
w_inv = 0x1000000 / vtx->Position[3];
if (vtx->Position[3] < 0) printf("!!! W=%d\n", vtx->Position[3]);
s32 posX = (vtx->Position[0] * w_inv) >> 12;
s32 posY = (vtx->Position[1] * w_inv) >> 12;
s32 posZ = (vtx->Position[2] * w_inv) >> 12;
//s32 posX = vtx->Position[0];
//s32 posY = vtx->Position[1];
s32 scrX = (((posX + 0x1000) * Viewport[2]) >> 13) + Viewport[0];
s32 scrY = (((posY + 0x1000) * Viewport[3]) >> 13) + Viewport[1];
s32 scrZ = (vtx->Position[2] + 0x1000) >> 1;
if (scrX > 255) scrX = 255;
if (scrY > 191) scrY = 191;
if (scrZ > 0xFFF) scrZ = 0xFFF;
if (scrX < 0) { printf("!! bad X %d\n", scrX); scrX = 0;}
if (scrY < 0) { printf("!! bad Y %d\n", scrY); scrY = 0;}
scrcoords[i][0] = scrX;
scrcoords[i][1] = 191 - scrY;
scrcoords[i][2] = 0; // TODO: Z
scrcoords[i][2] = scrZ;
scrcoords[i][3] = vtx->Position[3];
if (scrcoords[i][1] < ytop)
{
@ -79,6 +101,8 @@ void RenderPolygon(Polygon* polygon)
ybot = scrcoords[i][1];
vbot = i;
}
//if (vtx->Color[0]==63 && vtx->Color[1]==0 && vtx->Color[2]==0)
//printf("v%d: %d,%d W=%d\n", i, scrX, 191-scrY, vtx->Position[3]);
}
// draw, line per line
@ -103,28 +127,33 @@ void RenderPolygon(Polygon* polygon)
for (s32 y = ytop; y <= ybot; y++)
{
if (y == scrcoords[lnext][1] && y < ybot)
if (y < ybot)
{
lcur++;
if (lcur >= nverts) lcur = 0;
while (y == scrcoords[lnext][1])
{
lcur++;
if (lcur >= nverts) lcur = 0;
lnext = lcur + 1;
if (lnext >= nverts) lnext = 0;
lnext = lcur + 1;
if (lnext >= nverts) lnext = 0;
//lstep = ((scrcoords[lnext][0] - scrcoords[lcur][0]) << 12) / (scrcoords[lnext][1] - scrcoords[lcur][1]);
//xmin = scrcoords[lcur][0] << 12;
}
//lstep = ((scrcoords[lnext][0] - scrcoords[lcur][0]) << 12) / (scrcoords[lnext][1] - scrcoords[lcur][1]);
//xmin = scrcoords[lcur][0] << 12;
if (lcur == vbot) break;
}
if (y == scrcoords[rnext][1] && y < ybot)
{
rcur--;
if (rcur < 0) rcur = nverts - 1;
while (y == scrcoords[rnext][1])
{
rcur--;
if (rcur < 0) rcur = nverts - 1;
rnext = rcur - 1;
if (rnext < 0) rnext = nverts - 1;
rnext = rcur - 1;
if (rnext < 0) rnext = nverts - 1;
//rstep = ((scrcoords[rnext][0] - scrcoords[rcur][0]) << 12) / (scrcoords[rnext][1] - scrcoords[rcur][1]);
//xmax = scrcoords[rcur][0] << 12;
//rstep = ((scrcoords[rnext][0] - scrcoords[rcur][0]) << 12) / (scrcoords[rnext][1] - scrcoords[rcur][1]);
//xmax = scrcoords[rcur][0] << 12;
if (rcur == vbot) break;
}
}
Vertex* vlcur = polygon->Vertices[lcur];
@ -147,6 +176,12 @@ void RenderPolygon(Polygon* polygon)
s32 xl = scrcoords[lcur][0] + (((scrcoords[lnext][0] - scrcoords[lcur][0]) * lfactor) >> 12);
s32 xr = scrcoords[rcur][0] + (((scrcoords[rnext][0] - scrcoords[rcur][0]) * rfactor) >> 12);
//if (vlcur->Color[0]==0 && vlcur->Color[1]==63 && vlcur->Color[2]==0)
// printf("y:%d xleft:%d xright:%d %d,%d %d,%d\n", y, xl, xr, lcur, rcur, vtop, vbot);
//s32 zl = scrcoords[lcur][3] + (((scrcoords[lnext][3] - scrcoords[lcur][3]) * lfactor) >> 12);
//s32 zr = scrcoords[rcur][3] + (((scrcoords[rnext][3] - scrcoords[rcur][3]) * rfactor) >> 12);
u8 rl = vlcur->Color[0] + (((vlnext->Color[0] - vlcur->Color[0]) * lfactor) >> 12);
u8 gl = vlcur->Color[1] + (((vlnext->Color[1] - vlcur->Color[1]) * lfactor) >> 12);
u8 bl = vlcur->Color[2] + (((vlnext->Color[2] - vlcur->Color[2]) * lfactor) >> 12);
@ -165,11 +200,31 @@ void RenderPolygon(Polygon* polygon)
{
s32 xfactor = (x - xl) * xdiv;
//s32 z = (zl << 12) + ((zr - zl) * xfactor);
//z = zl + (((zr - zl) * xfactor) >> 12);
//s32 z_inv = ((z>>12)==0) ? 0x1000 : 0x1000000 / (z >> 12);
//xfactor = (xfactor * z_inv) >> 12;
//xfactor = (xfactor << 12) / z;
// TODO: get rid of this shit
if (x<0 || x>255 || y<0 || y>191)
{
//printf("BAD COORDS!! %d %d\n", x, y);
x = 0; y = 0;
}
u8* pixel = &ColorBuffer[((256*y) + x) * 4];
pixel[0] = rl + (((rr - rl) * xfactor) >> 12);
pixel[1] = gl + (((gr - gl) * xfactor) >> 12);
pixel[2] = bl + (((br - bl) * xfactor) >> 12);
pixel[3] = 31;
pixel[3] = 31; // TODO: alpha
// Z debug
/*u8 zerp = (z * 63) / 0xFFFFFF;
pixel[0] = zerp;
pixel[1] = zerp;
pixel[2] = zerp;*/
}
}
}
@ -180,11 +235,19 @@ void RenderFrame(Vertex* vertices, Polygon* polygons, int npolys)
for (int i = 0; i < 256*192; i++)
{
((u32*)ColorBuffer)[i] = 0x1F000000;
((u32*)ColorBuffer)[i] = 0x00000000;
}
for (int i = 0; i < npolys; i++)
{
/*printf("polygon %d: %d %d %d\n", i, polygons[i].Vertices[0]->Color[0], polygons[i].Vertices[0]->Color[1], polygons[i].Vertices[0]->Color[2]);
for (int j = 0; j < polygons[i].NumVertices; j++)
printf(" %d: %f %f %f\n",
j,
polygons[i].Vertices[j]->Position[0]/4096.0f,
polygons[i].Vertices[j]->Position[1]/4096.0f,
polygons[i].Vertices[j]->Position[2]/4096.0f);
*/
RenderPolygon(&polygons[i]);
}
}

17
README.md
View File

@ -36,3 +36,20 @@ TODO LIST
* sound
* wifi
* other non-core shit (debugger, graphics viewers, cheat crapo, etc)
IMMEDIATE TODO LIST (prior release 1.0)
* UI
* 3D engine that atleast supports texturing
* emulate DMA timings
* make timers suck less
TODO LIST FOR LATER
* sound
* more 3D engine features
* hardware renderer for 3D
* wifi
* maybe emulate flashcarts or other fancy hardware

4
main.cpp
View File

@ -85,6 +85,8 @@ LRESULT CALLBACK derpo(HWND window, UINT msg, WPARAM wparam, LPARAM lparam)
case VK_RIGHT: NDS::PressKey(4); break;
case 'A': NDS::PressKey(0); break;
case 'B': NDS::PressKey(1); break;
case 'L': NDS::PressKey(9); break;
case 'R': NDS::PressKey(8); break;
case 'D': NDS::debug(0); break;
}
return 0;
@ -100,6 +102,8 @@ LRESULT CALLBACK derpo(HWND window, UINT msg, WPARAM wparam, LPARAM lparam)
case VK_RIGHT: NDS::ReleaseKey(4); break;
case 'A': NDS::ReleaseKey(0); break;
case 'B': NDS::ReleaseKey(1); break;
case 'L': NDS::ReleaseKey(9); break;
case 'R': NDS::ReleaseKey(8); break;
}
return 0;

12
melonDS.depend
View File

@ -1,16 +1,16 @@
# depslib dependency file v1.0
1486502416 source:c:\documents\sources\melonds\main.cpp
1486824787 source:c:\documents\sources\melonds\main.cpp
<stdio.h>
<windows.h>
"NDS.h"
"GPU.h"
1486502049 c:\documents\sources\melonds\nds.h
1486822548 c:\documents\sources\melonds\nds.h
"types.h"
1481161027 c:\documents\sources\melonds\types.h
1486778178 source:c:\documents\sources\melonds\nds.cpp
1486947856 source:c:\documents\sources\melonds\nds.cpp
<stdio.h>
<string.h>
"NDS.h"
@ -109,7 +109,7 @@
1486511075 c:\documents\sources\melonds\fifo.h
"types.h"
1486589927 source:c:\documents\sources\melonds\dma.cpp
1486823366 source:c:\documents\sources\melonds\dma.cpp
<stdio.h>
"NDS.h"
"DMA.h"
@ -148,14 +148,14 @@
1486777933 c:\documents\sources\melonds\gpu3d.h
1486782030 source:c:\documents\sources\melonds\gpu3d.cpp
1486947978 source:c:\documents\sources\melonds\gpu3d.cpp
<stdio.h>
<string.h>
"NDS.h"
"GPU.h"
"FIFO.h"
1486781263 source:c:\documents\sources\melonds\gpu3d_soft.cpp
1486947027 source:c:\documents\sources\melonds\gpu3d_soft.cpp
<stdio.h>
<string.h>
"NDS.h"