thirdparty/ppsspp
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SoftGPU: Implement pretend antialias.

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This doesn't really smooth, but at the very least faking it makes Persona
3 have less ugly lines.
This commit is contained in:
Unknown W. Brackets 2017-05-14 15:49:36 -07:00
parent 5c9d223e32
commit 672ce51a2a
1 changed files with 19 additions and 2 deletions
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21
GPU/Software/Rasterizer.cpp
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@ -1677,12 +1677,19 @@ void DrawLine(const VertexData &v0, const VertexData &v1)
fog = ClampFogDepth((v0.fogdepth * (float)(steps - i) + v1.fogdepth * (float)i) / steps1);
}
if (gstate.isAntiAliasEnabled()) {
// TODO: Clearmode?
// TODO: Calculate.
prim_color.a() = 0x7F;
}
if (gstate.isTextureMapEnabled() && !clearMode) {
// TODO: UVGenMode?
Vec2<float> tc = (v0.texturecoords * (float)(steps - i) + v1.texturecoords * (float)i) / steps1;
Vec2<float> tc1 = (v0.texturecoords * (float)(steps - i - 1) + v1.texturecoords * (float)(i + 1)) / steps1;
float s = tc.s(), s1 = tc1.s();
float t = tc.t(), t1 = tc1.t();
float &s = tc.s(), &s1 = tc1.s();
float &t = tc.t(), &t1 = tc1.t();
if (gstate.isModeThrough()) {
s *= 1.0f / (float)gstate.getTextureWidth(0);
@ -1700,6 +1707,16 @@ void DrawLine(const VertexData &v0, const VertexData &v1)
int texFilt;
CalculateSamplingParams(ds, dt, maxTexLevel, texLevel, texLevelFrac, texFilt);
if (gstate.isAntiAliasEnabled()) {
// TODO: This is a niave and wrong implementation.
DrawingCoords p0 = TransformUnit::ScreenToDrawing(ScreenCoords((int)x, (int)y, (int)z));
DrawingCoords p1 = TransformUnit::ScreenToDrawing(ScreenCoords((int)(x + xinc), (int)(y + yinc), (int)(z + zinc)));
s = ((float)p0.x + xinc / 32.0f) / 512.0f;
t = ((float)p0.y + yinc / 32.0f) / 512.0f;
texFilt = 1;
}
ApplyTexturing(prim_color, s, t, texLevel, texLevelFrac, texFilt, texptr, texbufwidthbytes);
}