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Fix a possible crash in R_RenderMaskedSegRange

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R_AllocTextureColumnTables wasn't checking if the tables were never allocated, making the renderer later attempt to render midtextures for drawsegs that don't contain actual midtextures.
This commit is contained in:
Lactozilla 2023-08-22 13:34:09 -03:00
parent ac3e9fc999
commit 55b4458001
1 changed files with 6 additions and 0 deletions
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6
src/r_segs.c
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@ -1487,6 +1487,9 @@ static void R_AllocClippingTables(size_t range)
openings = Z_Realloc(openings, numopenings * sizeof (*openings), PU_STATIC, NULL);
lastopening = openings + pos;
if (oldopenings == NULL)
return;
// borrowed fix from *cough* zdoom *cough*
// [RH] We also need to adjust the openings pointers that
// were already stored in drawsegs.
@ -1519,6 +1522,9 @@ static void R_AllocTextureColumnTables(size_t range)
texturecolumntable = Z_Realloc(texturecolumntable, texturecolumntablesize * sizeof (*texturecolumntable), PU_STATIC, NULL);
curtexturecolumntable = texturecolumntable + pos;
if (oldtable == NULL)
return;
for (drawseg_t *ds = drawsegs; ds < ds_p; ds++)
{
// Check if it's in range of the tables