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- fix null pointer crash, replace DONT_DRAW with a boolean, make rw_pic a local variable

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This commit is contained in:
Magnus Norddahl 2018-12-23 05:01:50 +01:00
parent 9208fb9b77
commit 38cffa7646
2 changed files with 19 additions and 22 deletions
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38
src/swrenderer/line/r_renderdrawsegment.cpp
View file

@ -390,7 +390,7 @@ namespace swrenderer
}
rw_offset = 0;
rw_pic = tex;
FSoftwareTexture *rw_pic = tex;
double top, bot;
GetMaskedWallTopBottom(ds, top, bot);
@ -406,7 +406,7 @@ namespace swrenderer
}
// kg3D - render one fake wall
void RenderDrawSegment::RenderFakeWall(DrawSegment *ds, int x1, int x2, F3DFloor *rover, int lightlevel, FDynamicColormap *basecolormap, double clipTop, double clipBottom)
void RenderDrawSegment::RenderFakeWall(DrawSegment *ds, int x1, int x2, F3DFloor *rover, int lightlevel, FDynamicColormap *basecolormap, double clipTop, double clipBottom, FSoftwareTexture *rw_pic)
{
int i;
double xscale;
@ -509,7 +509,6 @@ namespace swrenderer
// kg3D - walls of fake floors
void RenderDrawSegment::RenderFakeWallRange(DrawSegment *ds, int x1, int x2)
{
FSoftwareTexture *const DONT_DRAW = ((FSoftwareTexture*)(intptr_t)-1);
int i, j;
F3DFloor *rover, *fover = nullptr;
int passed, last;
@ -569,7 +568,9 @@ namespace swrenderer
}
}
rw_pic = nullptr;
FSoftwareTexture *rw_pic = nullptr;
bool swimmable_found = false;
if (rover->bottom.plane->Zat0() >= clipTop || passed)
{
if (last)
@ -613,7 +614,7 @@ namespace swrenderer
// correct texture
if (fover->flags & rover->flags & FF_SWIMMABLE)
{ // don't ever draw (but treat as something has been found)
rw_pic = DONT_DRAW;
swimmable_found = true;
}
else
{
@ -664,7 +665,7 @@ namespace swrenderer
}
if (fover->flags & rover->flags & FF_SWIMMABLE)
{ // don't ever draw (but treat as something has been found)
rw_pic = DONT_DRAW;
swimmable_found = true;
}
fover = nullptr; // visible
break;
@ -676,7 +677,7 @@ namespace swrenderer
continue; // not visible
}
}
if (!rw_pic)
if (!rw_pic && !swimmable_found)
{
fover = nullptr;
FTexture *rw_tex;
@ -731,11 +732,10 @@ namespace swrenderer
}
if (basecolormap == nullptr) basecolormap = GetColorTable(frontsector->Colormap, frontsector->SpecialColors[sector_t::walltop]);
if (rw_pic != DONT_DRAW)
if (rw_pic && !swimmable_found)
{
RenderFakeWall(ds, x1, x2, fover ? fover : rover, lightlevel, basecolormap, clipTop, clipBottom);
RenderFakeWall(ds, x1, x2, fover ? fover : rover, lightlevel, basecolormap, clipTop, clipBottom, rw_pic);
}
else rw_pic = nullptr;
break;
}
}
@ -763,7 +763,9 @@ namespace swrenderer
continue;
}
}
rw_pic = nullptr;
FSoftwareTexture *rw_pic = nullptr;
bool swimmable_found = false;
if (rover->top.plane->Zat0() <= clipBottom || passed)
{ // maybe wall from inside rendering?
fover = nullptr;
@ -802,7 +804,7 @@ namespace swrenderer
// correct texture
if (fover->flags & rover->flags & FF_SWIMMABLE)
{
rw_pic = DONT_DRAW; // don't ever draw (but treat as something has been found)
swimmable_found = true; // don't ever draw (but treat as something has been found)
}
else
{
@ -852,7 +854,7 @@ namespace swrenderer
}
if (fover->flags & rover->flags & FF_SWIMMABLE)
{ // don't ever draw (but treat as something has been found)
rw_pic = DONT_DRAW;
swimmable_found = true;
}
fover = nullptr; // visible
break;
@ -862,7 +864,7 @@ namespace swrenderer
break;
}
}
if (rw_pic == nullptr)
if (!rw_pic && !swimmable_found)
{
fover = nullptr;
FTexture *rw_tex;
@ -917,13 +919,9 @@ namespace swrenderer
}
if (basecolormap == nullptr) basecolormap = GetColorTable(frontsector->Colormap, frontsector->SpecialColors[sector_t::walltop]);
if (rw_pic != DONT_DRAW)
if (rw_pic && !swimmable_found)
{
RenderFakeWall(ds, x1, x2, fover ? fover : rover, lightlevel, basecolormap, clipTop, clipBottom);
}
else
{
rw_pic = nullptr;
RenderFakeWall(ds, x1, x2, fover ? fover : rover, lightlevel, basecolormap, clipTop, clipBottom, rw_pic);
}
break;
}

3
src/swrenderer/line/r_renderdrawsegment.h
View file

@ -39,7 +39,7 @@ namespace swrenderer
private:
bool RenderWall(DrawSegment *ds, int x1, int x2, FDynamicColormap *basecolormap, SpriteDrawerArgs &columndrawerargs, bool visible, int lightlevel, bool foggy);
void ClipMidtex(int x1, int x2);
void RenderFakeWall(DrawSegment *ds, int x1, int x2, F3DFloor *rover, int lightlevel, FDynamicColormap *basecolormap, double clipTop, double clipBottom);
void RenderFakeWall(DrawSegment *ds, int x1, int x2, F3DFloor *rover, int lightlevel, FDynamicColormap *basecolormap, double clipTop, double clipBottom, FSoftwareTexture *rw_pic);
void RenderFakeWallRange(DrawSegment *ds, int x1, int x2);
void GetMaskedWallTopBottom(DrawSegment *ds, double &top, double &bot);
@ -55,7 +55,6 @@ namespace swrenderer
float rw_light = 0.0f;
float rw_lightstep = 0.0f;
fixed_t rw_offset = 0;
FSoftwareTexture *rw_pic = nullptr;
ProjectedWallLine wallupper;
ProjectedWallLine walllower;