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softgpu: Use a const for subpixel screenpos factor.

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Unknown W. Brackets 2022-02-19 21:03:49 -08:00
parent a66377fdf1
commit 1bc3acf2ed
5 changed files with 56 additions and 50 deletions
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9
GPU/Software/TransformUnit.cpp
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@ -125,6 +125,7 @@ static ScreenCoords ClipToScreenInternal(Vec3f scaled, const ClipCoords &coords,
// 16 = 0xFFFF / 4095.9375
// Round up at 0.625 to the nearest subpixel.
static_assert(SCREEN_SCALE_FACTOR == 16, "Currently only supports scale 16");
int x = (int)(scaled.x * 16.0f + 0.375f - gstate.getOffsetX16());
int y = (int)(scaled.y * 16.0f + 0.375f - gstate.getOffsetY16());
return ScreenCoords(x, y, scaled.z);
@ -161,8 +162,8 @@ ScreenCoords TransformUnit::ClipToScreen(const ClipCoords &coords) {
ScreenCoords TransformUnit::DrawingToScreen(const DrawingCoords &coords, u16 z) {
ScreenCoords ret;
ret.x = (u32)coords.x * 16;
ret.y = (u32)coords.y * 16;
ret.x = (u32)coords.x * SCREEN_SCALE_FACTOR;
ret.y = (u32)coords.y * SCREEN_SCALE_FACTOR;
ret.z = z;
return ret;
}
@ -429,8 +430,8 @@ VertexData TransformUnit::ReadVertex(VertexReader &vreader, const TransformState
if (state.enableLighting)
Lighting::Process(vertex, worldpos, worldnormal, state.lightingState);
} else {
vertex.screenpos.x = (int)(pos[0] * 16);
vertex.screenpos.y = (int)(pos[1] * 16);
vertex.screenpos.x = (int)(pos[0] * SCREEN_SCALE_FACTOR);
vertex.screenpos.y = (int)(pos[1] * SCREEN_SCALE_FACTOR);
vertex.screenpos.z = pos[2];
vertex.clippos.w = 1.f;
vertex.fogdepth = 1.f;