diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/GPU2D.cpp | 5 | ||||
| -rw-r--r-- | src/GPU3D.cpp | 416 | ||||
| -rw-r--r-- | src/GPU3D_Soft.cpp | 8 |
3 files changed, 190 insertions, 239 deletions
diff --git a/src/GPU2D.cpp b/src/GPU2D.cpp index c688129..40f1c6e 100644 --- a/src/GPU2D.cpp +++ b/src/GPU2D.cpp @@ -32,6 +32,8 @@ // * VRAM/FIFO display modes convert colors the same way // * 3D engine converts colors differently (18bit = 15bit * 2 + 1, except 0 = 0) // * 'screen disabled' white is 63,63,63 +// * [Gericom] bit15 is used as bottom green bit for palettes. TODO: check where this applies. +// tested on the normal BG palette and applies there // // oh also, changing DISPCNT bit16-17 midframe doesn't work (ignored? applied for next frame?) // TODO, eventually: check whether other DISPCNT bits can be changed midframe @@ -68,6 +70,9 @@ // * if BG0 is selected as 1st target, destination not selected as 2nd target: // brightness up/down effect is applied if selected. if blending is selected, it doesn't apply. // * 3D layer pixels with alpha=0 are always transparent. +// +// mosaic: +// * mosaic grid starts at 0,0 regardless of the BG/sprite position GPU2D::GPU2D(u32 num) diff --git a/src/GPU3D.cpp b/src/GPU3D.cpp index 7de5ad0..92b7c5d 100644 --- a/src/GPU3D.cpp +++ b/src/GPU3D.cpp @@ -164,6 +164,9 @@ u32 ExecParams[32]; u32 ExecParamCount; s32 CycleCount; +u32 NumPushPopCommands; +u32 NumTestCommands; + u32 MatrixMode; @@ -265,6 +268,9 @@ void Reset() ParamCount = 0; TotalParams = 0; + NumPushPopCommands = 0; + NumTestCommands = 0; + DispCnt = 0; AlphaRef = 0; @@ -448,44 +454,147 @@ void UpdateClipMatrix() -template<int comp, s32 plane> +template<int comp, s32 plane, bool attribs> void ClipSegment(Vertex* outbuf, Vertex* vout, Vertex* vin) { s64 factor_num = vin->Position[3] - (plane*vin->Position[comp]); s32 factor_den = factor_num - (vout->Position[3] - (plane*vout->Position[comp])); - Vertex mid; -#define INTERPOLATE(var) { mid.var = (vin->var + ((vout->var - vin->var) * factor_num) / factor_den); } +#define INTERPOLATE(var) { outbuf->var = (vin->var + ((vout->var - vin->var) * factor_num) / factor_den); } if (comp != 0) INTERPOLATE(Position[0]); if (comp != 1) INTERPOLATE(Position[1]); if (comp != 2) INTERPOLATE(Position[2]); INTERPOLATE(Position[3]); - mid.Position[comp] = plane*mid.Position[3]; + outbuf->Position[comp] = plane*outbuf->Position[3]; - INTERPOLATE(Color[0]); - INTERPOLATE(Color[1]); - INTERPOLATE(Color[2]); + if (attribs) + { + INTERPOLATE(Color[0]); + INTERPOLATE(Color[1]); + INTERPOLATE(Color[2]); - INTERPOLATE(TexCoords[0]); - INTERPOLATE(TexCoords[1]); + INTERPOLATE(TexCoords[0]); + INTERPOLATE(TexCoords[1]); + } - mid.Clipped = true; + outbuf->Clipped = true; #undef INTERPOLATE - *outbuf = mid; +} + +template<int comp, bool attribs> +int ClipAgainstPlane(Vertex* vertices, int nverts, int clipstart) +{ + Vertex temp[10]; + int prev, next; + int c = clipstart; + + if (clipstart == 2) + { + temp[0] = vertices[0]; + temp[1] = vertices[1]; + } + + for (int i = clipstart; i < nverts; i++) + { + prev = i-1; if (prev < 0) prev = nverts-1; + next = i+1; if (next >= nverts) next = 0; + + Vertex vtx = vertices[i]; + if (vtx.Position[comp] > vtx.Position[3]) + { + if ((comp == 2) && (!(CurPolygonAttr & (1<<12)))) return 0; + + Vertex* vprev = &vertices[prev]; + if (vprev->Position[comp] <= vprev->Position[3]) + { + ClipSegment<comp, 1, attribs>(&temp[c], &vtx, vprev); + c++; + } + + Vertex* vnext = &vertices[next]; + if (vnext->Position[comp] <= vnext->Position[3]) + { + ClipSegment<comp, 1, attribs>(&temp[c], &vtx, vnext); + c++; + } + } + else + temp[c++] = vtx; + } + + nverts = c; c = clipstart; + for (int i = clipstart; i < nverts; i++) + { + prev = i-1; if (prev < 0) prev = nverts-1; + next = i+1; if (next >= nverts) next = 0; + + Vertex vtx = temp[i]; + if (vtx.Position[comp] < -vtx.Position[3]) + { + Vertex* vprev = &temp[prev]; + if (vprev->Position[comp] >= -vprev->Position[3]) + { + ClipSegment<comp, -1, attribs>(&vertices[c], &vtx, vprev); + c++; + } + + Vertex* vnext = &temp[next]; + if (vnext->Position[comp] >= -vnext->Position[3]) + { + ClipSegment<comp, -1, attribs>(&vertices[c], &vtx, vnext); + c++; + } + } + else + vertices[c++] = vtx; + } + + for (int i = 0; i < c; i++) + { + Vertex* vtx = &vertices[i]; + + vtx->Color[0] &= ~0xFFF; vtx->Color[0] += 0xFFF; + vtx->Color[1] &= ~0xFFF; vtx->Color[1] += 0xFFF; + vtx->Color[2] &= ~0xFFF; vtx->Color[2] += 0xFFF; + } + + return c; +} + +template<bool attribs> +int ClipPolygon(Vertex* vertices, int nverts, int clipstart) +{ + // clip. + // for each vertex: + // if it's outside, check if the previous and next vertices are inside + // if so, place a new vertex at the edge of the view volume + + // TODO: check for 1-dot polygons + // TODO: the hardware seems to use a different algorithm. it reacts differently to vertices with W=0 + + // X clipping + nverts = ClipAgainstPlane<0, attribs>(vertices, nverts, clipstart); + + // Y clipping + nverts = ClipAgainstPlane<1, attribs>(vertices, nverts, clipstart); + + // Z clipping + nverts = ClipAgainstPlane<2, attribs>(vertices, nverts, clipstart); + + return nverts; } void SubmitPolygon() { - Vertex clippedvertices[2][10]; + Vertex clippedvertices[10]; Vertex* reusedvertices[2]; int clipstart = 0; int lastpolyverts = 0; int nverts = PolygonMode & 0x1 ? 4:3; int prev, next; - int c; // culling @@ -557,225 +666,21 @@ void SubmitPolygon() reusedvertices[0] = LastStripPolygon->Vertices[id0]; reusedvertices[1] = LastStripPolygon->Vertices[id1]; - clippedvertices[0][0] = *reusedvertices[0]; - clippedvertices[0][1] = *reusedvertices[1]; - clippedvertices[1][0] = *reusedvertices[0]; - clippedvertices[1][1] = *reusedvertices[1]; + clippedvertices[0] = *reusedvertices[0]; + clippedvertices[1] = *reusedvertices[1]; clipstart = 2; } } - // clip. - // for each vertex: - // if it's outside, check if the previous and next vertices are inside - // if so, place a new vertex at the edge of the view volume - - // X clipping - - c = clipstart; - for (int i = clipstart; i < nverts; i++) - { - prev = i-1; if (prev < 0) prev = nverts-1; - next = i+1; if (next >= nverts) next = 0; - - Vertex vtx = TempVertexBuffer[i]; - if (vtx.Position[0] > vtx.Position[3]) - { - Vertex* vprev = &TempVertexBuffer[prev]; - if (vprev->Position[0] <= vprev->Position[3]) - { - ClipSegment<0, 1>(&clippedvertices[0][c], &vtx, vprev); - c++; - } - - Vertex* vnext = &TempVertexBuffer[next]; - if (vnext->Position[0] <= vnext->Position[3]) - { - ClipSegment<0, 1>(&clippedvertices[0][c], &vtx, vnext); - c++; - } - } - else - clippedvertices[0][c++] = vtx; - } - - nverts = c; c = clipstart; for (int i = clipstart; i < nverts; i++) - { - prev = i-1; if (prev < 0) prev = nverts-1; - next = i+1; if (next >= nverts) next = 0; + clippedvertices[i] = TempVertexBuffer[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++; - } + // clipping - 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; - } + nverts = ClipPolygon<true>(clippedvertices, nverts, clipstart); - for (int i = 0; i < c; i++) - { - Vertex* vtx = &clippedvertices[1][i]; - - vtx->Color[0] &= ~0xFFF; vtx->Color[0] += 0xFFF; - vtx->Color[1] &= ~0xFFF; vtx->Color[1] += 0xFFF; - vtx->Color[2] &= ~0xFFF; vtx->Color[2] += 0xFFF; - } - - // Y clipping - - nverts = c; c = clipstart; - for (int i = clipstart; i < nverts; i++) - { - prev = i-1; if (prev < 0) prev = nverts-1; - next = i+1; if (next >= nverts) next = 0; - - Vertex vtx = clippedvertices[1][i]; - if (vtx.Position[1] > vtx.Position[3]) - { - Vertex* vprev = &clippedvertices[1][prev]; - if (vprev->Position[1] <= vprev->Position[3]) - { - ClipSegment<1, 1>(&clippedvertices[0][c], &vtx, vprev); - c++; - } - - Vertex* vnext = &clippedvertices[1][next]; - if (vnext->Position[1] <= vnext->Position[3]) - { - ClipSegment<1, 1>(&clippedvertices[0][c], &vtx, vnext); - c++; - } - } - else - clippedvertices[0][c++] = vtx; - } - - nverts = c; c = clipstart; - for (int i = clipstart; i < nverts; i++) - { - prev = i-1; if (prev < 0) prev = nverts-1; - next = i+1; if (next >= nverts) next = 0; - - 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; - } - - for (int i = 0; i < c; i++) - { - Vertex* vtx = &clippedvertices[1][i]; - - vtx->Color[0] &= ~0xFFF; vtx->Color[0] += 0xFFF; - vtx->Color[1] &= ~0xFFF; vtx->Color[1] += 0xFFF; - vtx->Color[2] &= ~0xFFF; vtx->Color[2] += 0xFFF; - } - - // Z clipping - - bool farplaneclip = false; - nverts = c; c = clipstart; - for (int i = clipstart; i < nverts; i++) - { - prev = i-1; if (prev < 0) prev = nverts-1; - next = i+1; if (next >= nverts) next = 0; - - Vertex vtx = clippedvertices[1][i]; - if (vtx.Position[2] > vtx.Position[3]) - { - farplaneclip = true; - - Vertex* vprev = &clippedvertices[1][prev]; - if (vprev->Position[2] <= vprev->Position[3]) - { - ClipSegment<2, 1>(&clippedvertices[0][c], &vtx, vprev); - c++; - } - - Vertex* vnext = &clippedvertices[1][next]; - if (vnext->Position[2] <= vnext->Position[3]) - { - ClipSegment<2, 1>(&clippedvertices[0][c], &vtx, vnext); - c++; - } - } - else - clippedvertices[0][c++] = vtx; - } - - if (farplaneclip && (!(CurPolygonAttr & (1<<12)))) - { - LastStripPolygon = NULL; - return; - } - - nverts = c; c = clipstart; - for (int i = clipstart; i < nverts; i++) - { - prev = i-1; if (prev < 0) prev = nverts-1; - next = i+1; if (next >= nverts) next = 0; - - 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; - } - - for (int i = 0; i < c; i++) - { - Vertex* vtx = &clippedvertices[1][i]; - - vtx->Color[0] &= ~0xFFF; vtx->Color[0] += 0xFFF; - vtx->Color[1] &= ~0xFFF; vtx->Color[1] += 0xFFF; - vtx->Color[2] &= ~0xFFF; vtx->Color[2] += 0xFFF; - } - - if (c == 0) + if (nverts == 0) { LastStripPolygon = NULL; return; @@ -783,10 +688,10 @@ void SubmitPolygon() // build the actual polygon - if (NumPolygons >= 2048 || NumVertices+c > 6144) + if (NumPolygons >= 2048 || NumVertices+nverts > 6144) { LastStripPolygon = NULL; - // TODO: set DISP3DCNT overflow flag + DispCnt |= (1<<13); return; } @@ -805,7 +710,7 @@ void SubmitPolygon() if (LastStripPolygon && clipstart > 0) { - if (c == lastpolyverts) + if (nverts == lastpolyverts) { poly->Vertices[0] = reusedvertices[0]; poly->Vertices[1] = reusedvertices[1]; @@ -825,10 +730,10 @@ void SubmitPolygon() poly->NumVertices += 2; } - for (int i = clipstart; i < c; i++) + for (int i = clipstart; i < nverts; i++) { Vertex* vtx = &CurVertexRAM[NumVertices]; - *vtx = clippedvertices[1][i]; + *vtx = clippedvertices[i]; poly->Vertices[i] = vtx; NumVertices++; @@ -878,7 +783,7 @@ void SubmitPolygon() s32 ytop = 192, ybot = 0; s32 xtop = 256, xbot = 0; - for (int i = 0; i < c; i++) + for (int i = 0; i < nverts; i++) { Vertex* vtx = poly->Vertices[i]; @@ -1095,6 +1000,17 @@ void CmdFIFOWrite(CmdFIFOEntry& entry) CmdFIFO->Write(entry); } + + if (entry.Command == 0x11 || entry.Command == 0x12) + { + GXStat |= (1<<14); // push/pop matrix + NumPushPopCommands++; + } + else if (entry.Command == 0x70 || entry.Command == 0x71 || entry.Command == 0x72) + { + GXStat |= (1<<0); // box/pos/vec test + NumTestCommands++; + } } CmdFIFOEntry CmdFIFORead() @@ -1131,7 +1047,6 @@ void ExecuteCommand() CycleCount += CmdNumCycles[entry.Command]; ExecParamCount = 0; - GXStat &= ~(1<<14); if (CycleCount > 0) GXStat |= (1<<27); @@ -1142,6 +1057,7 @@ void ExecuteCommand() break; case 0x11: // push matrix + NumPushPopCommands--; if (MatrixMode == 0) { if (ProjMatrixStackPointer > 0) @@ -1153,7 +1069,6 @@ void ExecuteCommand() memcpy(ProjMatrixStack, ProjMatrix, 16*4); ProjMatrixStackPointer++; - GXStat |= (1<<14); } else if (MatrixMode == 3) { @@ -1166,7 +1081,6 @@ void ExecuteCommand() memcpy(TexMatrixStack, TexMatrix, 16*4); TexMatrixStackPointer++; - GXStat |= (1<<14); } else { @@ -1180,11 +1094,11 @@ void ExecuteCommand() memcpy(PosMatrixStack[PosMatrixStackPointer], PosMatrix, 16*4); memcpy(VecMatrixStack[PosMatrixStackPointer], VecMatrix, 16*4); PosMatrixStackPointer++; - GXStat |= (1<<14); } break; case 0x12: // pop matrix + NumPushPopCommands--; if (MatrixMode == 0) { if (ProjMatrixStackPointer <= 0) @@ -1196,7 +1110,6 @@ void ExecuteCommand() ProjMatrixStackPointer--; memcpy(ProjMatrix, ProjMatrixStack, 16*4); - GXStat |= (1<<14); ClipMatrixDirty = true; } else if (MatrixMode == 3) @@ -1210,7 +1123,6 @@ void ExecuteCommand() TexMatrixStackPointer--; memcpy(TexMatrix, TexMatrixStack, 16*4); - GXStat |= (1<<14); } else { @@ -1227,7 +1139,6 @@ void ExecuteCommand() memcpy(PosMatrix, PosMatrixStack[PosMatrixStackPointer], 16*4); memcpy(VecMatrix, VecMatrixStack[PosMatrixStackPointer], 16*4); - GXStat |= (1<<14); ClipMatrixDirty = true; } break; @@ -1592,6 +1503,21 @@ void ExecuteCommand() Viewport[3] = (ExecParams[0] >> 24) - Viewport[1] + 1; break; + case 0x70: // box test + NumTestCommands -= 3; + // TODO + break; + + case 0x71: // pos test + NumTestCommands -= 2; + // + break; + + case 0x72: // vec test + NumTestCommands--; + // + break; + default: //if (entry.Command != 0x41) //printf("!! UNKNOWN GX COMMAND %02X %08X\n", entry.Command, entry.Param); @@ -1612,13 +1538,21 @@ void Run(s32 cycles) if (CycleCount <= 0) { while (CycleCount <= 0 && !CmdPIPE->IsEmpty()) + { + if (NumPushPopCommands == 0) GXStat &= ~(1<<14); + if (NumTestCommands == 0) GXStat &= ~(1<<0); + ExecuteCommand(); + } } if (CycleCount <= 0 && CmdPIPE->IsEmpty()) { CycleCount = 0; - GXStat &= ~((1<<27)|(1<<14)); + GXStat &= ~(1<<27); + + if (NumPushPopCommands == 0) GXStat &= ~(1<<14); + if (NumTestCommands == 0) GXStat &= ~(1<<0); } } @@ -1777,7 +1711,9 @@ void Write16(u32 addr, u16 val) switch (addr) { case 0x04000060: - DispCnt = val; + DispCnt = (val & 0x4FFF) | (DispCnt & 0x3000); + if (val & (1<<12)) DispCnt &= ~(1<<12); + if (val & (1<<13)) DispCnt &= ~(1<<13); return; case 0x04000340: @@ -1836,7 +1772,9 @@ void Write32(u32 addr, u32 val) switch (addr) { case 0x04000060: - DispCnt = val & 0xFFFF; + DispCnt = (val & 0x4FFF) | (DispCnt & 0x3000); + if (val & (1<<12)) DispCnt &= ~(1<<12); + if (val & (1<<13)) DispCnt &= ~(1<<13); return; case 0x04000340: diff --git a/src/GPU3D_Soft.cpp b/src/GPU3D_Soft.cpp index a981bd5..f15761c 100644 --- a/src/GPU3D_Soft.cpp +++ b/src/GPU3D_Soft.cpp @@ -769,6 +769,14 @@ void RenderPolygon(Polygon* polygon) if (rslope > 0) dxr += rslope; else dxr -= rslope; } + + /*for (int i = 0; i < polygon->NumVertices; i++) + { + Vertex* vtx = polygon->Vertices[i]; + u32 addr = vtx->FinalPosition[0] + (vtx->FinalPosition[1]*256); + if (addr < 256*192) + ColorBuffer[addr] = 0x1F3F003F; + }*/ } void RenderFrame(Vertex* vertices, Polygon* polygons, int npolys) |