pico: detect intentional material name and do not replace them with texture

Detect intentional material name to not replace it with texture name.

Reimplement commits by Garux:
https://github.com/Garux/netradiant-custom/commit/1bd3e7ae186b55fb61e3738d2493432c0b1f5a7b
https://github.com/Garux/netradiant-custom/commit/ea21eee2254fb2e667732d8f1b0f83c439a89bfa

This attempts to restore proper material behaviour when the mapper knows what he is doing,
also called Julius' case or correct case because Julius is always correct™
while keeping the fallback for other situations, also called newbie's case
which may be compatible with third-party tools not following Quake 3 conventions.

See: https://gitlab.com/xonotic/netradiant/-/merge_requests/179#note_777324051

<3 @julius__ @Garux

diff --git a/libs/picomodel/picointernal.c b/libs/picomodel/picointernal.c
index 614d7c53b04a7ee43a9b6e9b935d7dfa7f99aa59..0a8597f840416e107c87b2653da4e2765a561c0e 100644 (file)
--- a/libs/picomodel/picointernal.c
+++ b/libs/picomodel/picointernal.c
@@ -741,7 +741,28 @@ void _pico_deduce_shadernames( picoModel_t *model ){
 
                const char* mapname = model->shader[i]->mapName;
                const char* shadername = model->shader[i]->name;
-               if( mapname && *mapname )
+
+               /* Detect intentional material name to not replace it with texture name.
+
+               Reimplement commits by Garux:
+               https://github.com/Garux/netradiant-custom/commit/1bd3e7ae186b55fb61e3738d2493432c0b1f5a7b
+               https://github.com/Garux/netradiant-custom/commit/ea21eee2254fb2e667732d8f1b0f83c439a89bfa
+
+               This attempts to restore proper material behaviour when the mapper knows what he is doing,
+               also called Julius' case or correct case because Julius is always correct™
+               while keeping the fallback for other situations, also called newbie's case
+               which may be compatible with third-party tools not following Quake 3 conventions.
+
+               See: https://gitlab.com/xonotic/netradiant/-/merge_requests/179#note_777324051 */
+               if ( shadername && *shadername &&
+                       ( _pico_strnicmp( shadername, "models/", 7 ) == 0
+                       || _pico_strnicmp( shadername, "models\\", 7 ) == 0
+                       || _pico_strnicmp( shadername, "textures/", 9 ) == 0
+                       || _pico_strnicmp( shadername, "textures\\", 9 ) == 0 ) )
+               {
+                       _pico_deduce_shadername( model->fileName, shadername, model->shader[i] );
+               }
+               else if( mapname && *mapname )
                        _pico_deduce_shadername( model->fileName, mapname, model->shader[i] );
                else if( shadername && *shadername )
                        _pico_deduce_shadername( model->fileName, shadername, model->shader[i] );