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Fix divide by 0 in new wallscan functions with 1-pixel tall textures

This commit is contained in:
Marisa Heit 2016-11-05 22:09:38 -05:00
parent 9ab779fd61
commit ae28c9b29c
1 changed files with 2 additions and 2 deletions
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4
src/r_segs.cpp
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@ -1114,7 +1114,7 @@ WallscanSampler::WallscanSampler(int y1, float swal, double yrepeat, fixed_t xof
// Draw a column with support for non-power-of-two ranges
void wallscan_drawcol1(int x, int y1, int y2, WallscanSampler &sampler, DWORD(*draw1column)())
{
if (sampler.uv_max == 0) // power of two
if (sampler.uv_max == 0 || sampler.uv_step == 0) // power of two
{
int count = y2 - y1;
@ -1162,7 +1162,7 @@ void wallscan_drawcol1(int x, int y1, int y2, WallscanSampler &sampler, DWORD(*d
// Draw four columns with support for non-power-of-two ranges
void wallscan_drawcol4(int x, int y1, int y2, WallscanSampler *sampler, void(*draw4columns)())
{
if (sampler[0].uv_max == 0) // power of two, no wrap handling needed
if (sampler[0].uv_max == 0 || sampler[0].uv_step == 0) // power of two, no wrap handling needed
{
int count = y2 - y1;
for (int i = 0; i < 4; i++)