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Fix midtexture repeat and yoffset bug

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This commit is contained in:
Magnus Norddahl 2016-11-15 12:31:57 +01:00
parent e5f8af2216
commit f143b9b7b0
2 changed files with 44 additions and 22 deletions
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54
src/r_poly_wall.cpp
View file

@ -117,6 +117,16 @@ bool RenderPolyWall::RenderLine(const TriMatrix &worldToClip, seg_t *line, secto
return false;
}
void RenderPolyWall::SetCoords(const DVector2 &v1, const DVector2 &v2, double ceil1, double floor1, double ceil2, double floor2)
{
this->v1 = v1;
this->v2 = v2;
this->ceil1 = ceil1;
this->floor1 = floor1;
this->ceil2 = ceil2;
this->floor2 = floor2;
}
void RenderPolyWall::Render(const TriMatrix &worldToClip)
{
FTexture *tex = GetTexture();
@ -157,6 +167,13 @@ void RenderPolyWall::Render(const TriMatrix &worldToClip)
vertices[3].varying[0] = (float)texcoords.u1;
vertices[3].varying[1] = (float)texcoords.v2;
// Masked walls clamp to the 0-1 range (no texture repeat)
if (Masked)
{
ClampHeight(vertices[0], vertices[3]);
ClampHeight(vertices[1], vertices[2]);
}
TriUniforms uniforms;
uniforms.objectToClip = worldToClip;
uniforms.light = (uint32_t)(GetLightLevel() / 255.0f * 256.0f);
@ -188,6 +205,26 @@ void RenderPolyWall::Render(const TriMatrix &worldToClip)
}
}
void RenderPolyWall::ClampHeight(TriVertex &v1, TriVertex &v2)
{
float top = v1.z;
float bottom = v2.z;
float texv1 = v1.varying[1];
float texv2 = v2.varying[1];
float delta = (texv2 - texv1);
float t1 = texv1 < 0.0f ? -texv1 / delta : 0.0f;
float t2 = texv2 > 1.0f ? (1.0f - texv1) / delta : 1.0f;
float inv_t1 = 1.0f - t1;
float inv_t2 = 1.0f - t2;
v1.z = top * inv_t1 + bottom * t1;
v1.varying[1] = texv1 * inv_t1 + texv2 * t1;
v2.z = top * inv_t2 + bottom * t2;
v2.varying[1] = texv1 * inv_t2 + texv2 * t2;
}
FTexture *RenderPolyWall::GetTexture()
{
FTexture *tex = TexMan(Line->sidedef->GetTexture(Texpart), true);
@ -296,21 +333,14 @@ void PolyWallTextureCoords::CalcVMidPart(FTexture *tex, const seg_t *line, doubl
bool pegged = (line->linedef->flags & ML_DONTPEGBOTTOM) == 0;
if (pegged) // top to bottom
{
v1 = yoffset;
v2 = v1 + (topz - bottomz);
v1 *= vscale;
v2 *= vscale;
v1 = yoffset * vscale;
v2 = (yoffset + (topz - bottomz)) * vscale;
}
else // bottom to top
{
int texHeight = tex->GetHeight();
v1 = yoffset;
v2 = v1 + (topz - bottomz);
v1 *= vscale;
v2 *= vscale;
v1 = texHeight - v1;
v2 = texHeight - v2;
std::swap(v1, v2);
v1 = texHeight - (-yoffset + (topz - bottomz)) * vscale;
v2 = texHeight + yoffset * vscale;
}
}
@ -326,7 +356,7 @@ void PolyWallTextureCoords::CalcVBottomPart(FTexture *tex, const seg_t *line, do
}
else
{
v1 = yoffset + (unpeggedceil - topz);
v1 = -yoffset + (unpeggedceil - topz);
v2 = v1 + (topz - bottomz);
v1 *= vscale;
v2 *= vscale;

12
src/r_poly_wall.h
View file

@ -31,18 +31,9 @@ class RenderPolyWall
public:
static bool RenderLine(const TriMatrix &worldToClip, seg_t *line, sector_t *frontsector, uint32_t subsectorDepth, std::vector<PolyTranslucentObject> &translucentWallsOutput);
void SetCoords(const DVector2 &v1, const DVector2 &v2, double ceil1, double floor1, double ceil2, double floor2);
void Render(const TriMatrix &worldToClip);
void SetCoords(const DVector2 &v1, const DVector2 &v2, double ceil1, double floor1, double ceil2, double floor2)
{
this->v1 = v1;
this->v2 = v2;
this->ceil1 = ceil1;
this->floor1 = floor1;
this->ceil2 = ceil2;
this->floor2 = floor2;
}
DVector2 v1;
DVector2 v2;
double ceil1 = 0.0;
@ -60,6 +51,7 @@ public:
uint32_t SubsectorDepth = 0;
private:
void ClampHeight(TriVertex &v1, TriVertex &v2);
FTexture *GetTexture();
int GetLightLevel();
};