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GPU: Fix vertex sign extend at 11b

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Fixes Skullmonkeys and probably others
This commit is contained in:
Blue 2021-01-27 21:30:50 +01:00
parent 188c3b8109
commit 9e75db4136
1 changed files with 6 additions and 6 deletions
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12
ProjectPSX/Devices/GPU.cs
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@ -566,8 +566,8 @@ namespace ProjectPSX.Devices {
if (isShaded) c[i] = buffer[pointer++];
v[i].val = buffer[pointer++];
v[i].x = (short)(signed11bit((uint)v[i].x) + drawingXOffset);
v[i].y = (short)(signed11bit((uint)v[i].y) + drawingYOffset);
v[i].x = signed11bit((uint)(v[i].x + drawingXOffset));
v[i].y = signed11bit((uint)(v[i].y + drawingYOffset));
if (isTextured) {
uint textureData = buffer[pointer++];
@ -811,8 +811,8 @@ namespace ProjectPSX.Devices {
primitive.isRawTextured = isRawTextured;
uint vertex = buffer[pointer++];
short xo = signed11bit(vertex & 0xFFFF);
short yo = signed11bit(vertex >> 16);
short xo = (short)(vertex & 0xFFFF);
short yo = (short)(vertex >> 16);
ushort palette = 0;
byte textureX = 0;
@ -844,8 +844,8 @@ namespace ProjectPSX.Devices {
break;
}
int y = yo + drawingYOffset;
int x = xo + drawingXOffset;
int y = signed11bit((uint)(yo + drawingYOffset));
int x = signed11bit((uint)(xo + drawingXOffset));
v[0].x = (short)x;
v[0].y = (short)y;