From af71efc0e6611599b4ed16a99be124f285d38c68 Mon Sep 17 00:00:00 2001
From: Garux <garux@mail.ru>
Date: Sun, 25 Oct 2020 09:07:29 +0300
Subject: [PATCH] * no shaderlist.txt or empty one = load all shaders

---
 plugins/shaders/shaders.cpp   |  8 ++++-
 tools/quake3/q3map2/shaders.c | 55 ++++++++++++++++++++++++++---------
 2 files changed, 48 insertions(+), 15 deletions(-)

diff --git a/plugins/shaders/shaders.cpp b/plugins/shaders/shaders.cpp
index 19383851..ce1b803a 100644
--- a/plugins/shaders/shaders.cpp
+++ b/plugins/shaders/shaders.cpp
@@ -1676,7 +1676,13 @@ void Shaders_Load(){
 			}
 
 			GlobalFileSystem().forEachArchive( AddShaderListFromArchiveCaller(), false, true );
-			DumpUnreferencedShaders();
+			if( l_shaderfiles != nullptr ){
+				DumpUnreferencedShaders();
+			}
+			else{
+				globalOutputStream() << "No shaderlist.txt found: loading all shaders\n";
+				GlobalFileSystem().forEachFile( path.c_str(), g_shadersExtension, AddShaderFileCaller(), 1 );
+			}
 		}
 		else
 		{
diff --git a/tools/quake3/q3map2/shaders.c b/tools/quake3/q3map2/shaders.c
index 4b7833d1..4393257c 100644
--- a/tools/quake3/q3map2/shaders.c
+++ b/tools/quake3/q3map2/shaders.c
@@ -2053,6 +2053,33 @@ static void ParseCustomInfoParms( void ){
 
 
 
+#define MAX_SHADER_FILES    1024
+
+typedef struct StrList_s
+{
+	int n;
+	char* s[MAX_SHADER_FILES];
+}
+StrList;
+
+void pushShaderCallback( StrList* list, const char* string ){
+	char* shader = copystring( string );
+	strClear( shader + strlen( shader ) - strlen( ".shader" ) );
+	/* check for duplicate entries */
+	for ( int i = 0; i < list->n; i++ )
+		if ( striEqual( list->s[ i ], shader ) ){
+			free( shader );
+			return;
+		}
+
+	/* test limit */
+	if ( list->n >= MAX_SHADER_FILES )
+		Error( "MAX_SHADER_FILES (%d) reached!", (int) MAX_SHADER_FILES );
+
+	/* new shader file */
+	list->s[ list->n++ ] = shader;
+}
+
 /*
    LoadShaderInfo()
    the shaders are parsed out of shaderlist.txt from a main directory
@@ -2060,12 +2087,10 @@ static void ParseCustomInfoParms( void ){
    on linux there's an additional twist, we actually merge the stuff from ~/.q3a/ and from the base dir
  */
 
-#define MAX_SHADER_FILES    1024
-
 void LoadShaderInfo( void ){
-	int i, j, numShaderFiles, count;
+	int i, j, count;
 	char filename[ 1024 ];
-	char            *shaderFiles[ MAX_SHADER_FILES ];
+	StrList shaderFiles = { .n = 0 };
 
 
 	/* rr2do2: parse custom infoparms first */
@@ -2073,9 +2098,6 @@ void LoadShaderInfo( void ){
 		ParseCustomInfoParms();
 	}
 
-	/* start with zero */
-	numShaderFiles = 0;
-
 	/* we can pile up several shader files, the one in baseq3 and ones in the mod dir or other spots */
 	sprintf( filename, "%s/shaderlist.txt", game->shaderPath );
 	count = vfsGetFileCount( filename );
@@ -2091,8 +2113,8 @@ void LoadShaderInfo( void ){
 		while ( GetToken( true ) )
 		{
 			/* check for duplicate entries */
-			for ( j = 0; j < numShaderFiles; j++ )
-				if ( strEqual( shaderFiles[ j ], token ) ) {
+			for ( j = 0; j < shaderFiles.n; j++ )
+				if ( strEqual( shaderFiles.s[ j ], token ) ) {
 					break;
 				}
 
@@ -2102,18 +2124,23 @@ void LoadShaderInfo( void ){
 			}
 
 			/* new shader file */
-			if ( j == numShaderFiles ) {
-				shaderFiles[ numShaderFiles++ ] = copystring( token );
+			if ( j == shaderFiles.n ) {
+				shaderFiles.s[ shaderFiles.n++ ] = copystring( token );
 			}
 		}
 	}
 
+	if( shaderFiles.n == 0 ){
+		Sys_Printf( "%s", "No shaderlist.txt found: loading all shaders\n" );
+		vfsListShaderFiles( &shaderFiles, pushShaderCallback );
+	}
+
 	/* parse the shader files */
-	for ( i = 0; i < numShaderFiles; i++ )
+	for ( i = 0; i < shaderFiles.n; i++ )
 	{
-		sprintf( filename, "%s/%s.shader", game->shaderPath, shaderFiles[ i ] );
+		sprintf( filename, "%s/%s.shader", game->shaderPath, shaderFiles.s[ i ] );
 		ParseShaderFile( filename );
-		free( shaderFiles[ i ] );
+		free( shaderFiles.s[ i ] );
 	}
 
 	/* emit some statistics */