define stuff idk

src/hardware/hw_cache.c

@@ -664,8 +664,10 @@ static void HWR_GenerateTexture(INT32 texnum, GLTexture_t *grtex)
 	{
 		size_t lumplength = W_LumpLengthPwad(patch->wad, patch->lump);
 		realpatch = W_CacheLumpNumPwad(patch->wad, patch->lump, PU_CACHE);
+#ifndef NO_PNG_LUMPS
 		if (R_IsLumpPNG((UINT8 *)realpatch, lumplength))
 			realpatch = R_PNGToPatch((UINT8 *)realpatch, lumplength);
+#endif
 		HWR_DrawTexturePatchInCache(&grtex->mipmap,
 		                     blockwidth, blockheight,
 		                     texture, patch,
@@ -892,8 +894,10 @@ static void HWR_LoadPatchFlat(GLMipmap_t *grMipmap, lumpnum_t flatlumpnum)
 {
 	patch_t *patch = (patch_t *)W_CacheLumpNum(flatlumpnum, PU_STATIC);
 	size_t lumplength = W_LumpLength(flatlumpnum);
+#ifndef NO_PNG_LUMPS
 	if (R_IsLumpPNG((UINT8 *)patch, lumplength))
 		patch = R_PNGToPatch((UINT8 *)patch, lumplength);
+#endif
 
 	grMipmap->width  = (UINT16)SHORT(patch->width);
 	grMipmap->height = (UINT16)SHORT(patch->height);

src/r_data.c

@@ -376,8 +376,10 @@ static UINT8 *R_GenerateTexture(size_t texnum)
 		lumpnum = patch->lump;
 		lumplength = W_LumpLengthPwad(wadnum, lumpnum);
 		realpatch = W_CacheLumpNumPwad(wadnum, lumpnum, PU_CACHE);
+#ifndef NO_PNG_LUMPS
 		if (R_IsLumpPNG((UINT8 *)realpatch, lumplength))
 			realpatch = R_PNGToPatch((UINT8 *)realpatch, lumplength);
+#endif
 
 		// Check the patch for holes.
 		if (texture->width > SHORT(realpatch->width) || texture->height > SHORT(realpatch->height))
@@ -468,8 +470,10 @@ static UINT8 *R_GenerateTexture(size_t texnum)
 		lumpnum = patch->lump;
 		lumplength = W_LumpLengthPwad(wadnum, lumpnum);
 		realpatch = W_CacheLumpNumPwad(wadnum, lumpnum, PU_CACHE);
+#ifndef NO_PNG_LUMPS
 		if (R_IsLumpPNG((UINT8 *)realpatch, lumplength))
 			realpatch = R_PNGToPatch((UINT8 *)realpatch, lumplength);
+#endif
 
 		x1 = patch->originx;
 		width = SHORT(realpatch->width);
@@ -734,6 +738,8 @@ void R_LoadTextures(void)
 
 			// Set texture properties.
 			M_Memcpy(texture->name, W_CheckNameForNumPwad(wadnum, lumpnum), sizeof(texture->name));
+
+#ifndef NO_PNG_LUMPS
 			if (R_IsLumpPNG((UINT8 *)patchlump, lumplength))
 			{
 				INT16 width, height;
@@ -742,6 +748,7 @@ void R_LoadTextures(void)
 				texture->height = height;
 			}
 			else
+#endif
 			{
 				texture->width = SHORT(patchlump->width);
 				texture->height = SHORT(patchlump->height);

src/r_plane.c

@@ -963,12 +963,14 @@ void R_DrawSinglePlane(visplane_t *pl)
 	// Check if the flat is actually a wall texture.
 	if (levelflat->texturenum != 0 && levelflat->texturenum != -1)
 		flat = R_GetPatchFlat(levelflat, true, false);
-	// Maybe it's just a patch, then?
-	else if (R_CheckIfPatch(levelflat->lumpnum))
-		flat = R_GetPatchFlat(levelflat, false, false);
+#ifndef NO_PNG_LUMPS
 	// Maybe it's a PNG?!
 	else if (R_IsLumpPNG(ds_source, size))
 		flat = R_GetPatchFlat(levelflat, false, true);
+#endif
+	// Maybe it's just a patch, then?
+	else if (R_CheckIfPatch(levelflat->lumpnum))
+		flat = R_GetPatchFlat(levelflat, false, false);
 	// It's a raw flat.
 	else
 	{