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melonDS
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calculate texture coordinates

This commit is contained in:
StapleButter 2017-02-28 00:50:54 +01:00
parent fb9dddc360
commit f16d2aec61
5 changed files with 48 additions and 5 deletions
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37
GPU3D.cpp
View File

@ -169,10 +169,14 @@ void UpdateClipMatrix();
u32 PolygonMode;
s16 CurVertex[3];
u8 VertexColor[3];
s16 TexCoords[2];
u32 PolygonAttr;
u32 CurPolygonAttr;
u32 TexParam;
u32 TexPalette;
Vertex TempVertexBuffer[4];
u32 VertexNum;
u32 VertexNumInPoly;
@ -410,6 +414,9 @@ void ClipSegment(Vertex* outbuf, Vertex* vout, Vertex* vin)
INTERPOLATE(Color[1]);
INTERPOLATE(Color[2]);
INTERPOLATE(TexCoords[0]);
INTERPOLATE(TexCoords[1]);
mid.Clipped = true;
mid.ViewportTransformDone = false;
@ -798,6 +805,17 @@ void SubmitVertex()
vertextrans->Color[1] = (VertexColor[1] << 12) + 0xFFF;
vertextrans->Color[2] = (VertexColor[2] << 12) + 0xFFF;
if ((TexParam >> 30) == 3)
{
vertextrans->TexCoords[0] = (CurVertex[0]*TexMatrix[0] + CurVertex[1]*TexMatrix[4] + CurVertex[2]*TexMatrix[8] + 0x1000*TexCoords[0]) >> 12;
vertextrans->TexCoords[1] = (CurVertex[0]*TexMatrix[1] + CurVertex[1]*TexMatrix[5] + CurVertex[2]*TexMatrix[9] + 0x1000*TexCoords[1]) >> 12;
}
else
{
vertextrans->TexCoords[0] = TexCoords[0];
vertextrans->TexCoords[1] = TexCoords[1];
}
vertextrans->Clipped = false;
vertextrans->ViewportTransformDone = false;
@ -1219,6 +1237,17 @@ void ExecuteCommand()
case 0x21:
// TODO: more cycles if lights are enabled
// TODO also texcoords if needed
break;
case 0x22: // texcoord
TexCoords[0] = ExecParams[0] & 0xFFFF;
TexCoords[1] = ExecParams[1] >> 16;
if ((TexParam >> 30) == 1)
{
TexCoords[0] = (TexCoords[0]*TexMatrix[0] + TexCoords[1]*TexMatrix[4] + TexMatrix[8] + TexMatrix[12]) >> 12;
TexCoords[1] = (TexCoords[0]*TexMatrix[1] + TexCoords[1]*TexMatrix[5] + TexMatrix[9] + TexMatrix[13]) >> 12;
}
break;
case 0x23: // full vertex
@ -1264,6 +1293,14 @@ void ExecuteCommand()
PolygonAttr = ExecParams[0];
break;
case 0x2A: // texture param
TexParam = ExecParams[0];
break;
case 0x2B: // texture palette
TexPalette = ExecParams[0] & 0x1FFF;
break;
case 0x40:
PolygonMode = ExecParams[0] & 0x3;
VertexNum = 0;

1
GPU3D.h
View File

@ -26,6 +26,7 @@ typedef struct
{
s32 Position[4];
s32 Color[3];
s16 TexCoords[2];
bool Clipped;

2
GPU3D_Soft.cpp
View File

@ -333,6 +333,8 @@ void RenderPolygon(Polygon* polygon)
perspfactor2 = 0;
}
//z = 0x1000000 / (perspfactor1 + perspfactor2);
// possible optimization: only do color interpolation if the depth test passes
u32 vr = ((perspfactor1 * rl) + (perspfactor2 * rr)) / (perspfactor1 + perspfactor2);
u32 vg = ((perspfactor1 * gl) + (perspfactor2 * gr)) / (perspfactor1 + perspfactor2);

3
NDS.cpp
View File

@ -776,6 +776,9 @@ void debug(u32 param)
{
printf("ARM9 PC=%08X LR=%08X %08X\n", ARM9->R[15], ARM9->R[14], ARM9->R_IRQ[1]);
printf("ARM7 PC=%08X LR=%08X %08X\n", ARM7->R[15], ARM7->R[14], ARM7->R_IRQ[1]);
for (int i = 0; i < 9; i++)
printf("VRAM %c: %02X\n", 'A'+i, GPU::VRAMCNT[i]);
}

10
melonDS.depend
View File

@ -10,7 +10,7 @@
1481161027 c:\documents\sources\melonds\types.h
1488227258 source:c:\documents\sources\melonds\nds.cpp
1488237361 source:c:\documents\sources\melonds\nds.cpp
<stdio.h>
<string.h>
"NDS.h"
@ -119,7 +119,7 @@
1487305393 c:\documents\sources\melonds\dma.h
"types.h"
1488226688 source:c:\documents\sources\melonds\gpu.cpp
1488227337 source:c:\documents\sources\melonds\gpu.cpp
<stdio.h>
<string.h>
"NDS.h"
@ -146,16 +146,16 @@
"NDS.h"
"NDSCart.h"
1487610598 c:\documents\sources\melonds\gpu3d.h
1488238607 c:\documents\sources\melonds\gpu3d.h
1487681103 source:c:\documents\sources\melonds\gpu3d.cpp
1488239360 source:c:\documents\sources\melonds\gpu3d.cpp
<stdio.h>
<string.h>
"NDS.h"
"GPU.h"
"FIFO.h"
1488214777 source:c:\documents\sources\melonds\gpu3d_soft.cpp
1488237540 source:c:\documents\sources\melonds\gpu3d_soft.cpp
<stdio.h>
<string.h>
"NDS.h"