fix SHADER_NEXT/SHADER_PREV

command.c

@@ -245,6 +245,7 @@ bool command_set_shader(const char *arg)
          msg_hash_to_str(MSG_APPLYING_SHADER),
          arg);
 
+   retroarch_set_shader_preset(arg);
    return video_driver_set_shader(type, arg);
 }
 

gfx/video_driver.c

@@ -31,6 +31,8 @@
 #include <gfx/video_frame.h>
 #include <formats/image.h>
 
+#include "menu/menu_shader.h"
+
 #ifdef HAVE_CONFIG_H
 #include "../config.h"
 #endif
@@ -672,9 +674,17 @@ retro_proc_address_t video_driver_get_proc_address(const char *sym)
 bool video_driver_set_shader(enum rarch_shader_type type,
       const char *path)
 {
+   bool ret = false;
    if (current_video->set_shader)
-      return current_video->set_shader(video_driver_data, type, path);
+      ret = current_video->set_shader(video_driver_data, type, path);
-   return false;
+
+   if (ret)
+   {
+      menu_shader_manager_free();
+      menu_shader_manager_init();
+   }
+
+   return ret;
 }
 
 static void video_driver_filter_free(void)

retroarch.c

@@ -1926,7 +1926,7 @@ void retroarch_unset_forced_fullscreen(void)
 }
 
 /* set a runtime shader preset without overwriting the settings value */
-void retroarch_set_shader_preset(char* preset)
+void retroarch_set_shader_preset(const char* preset)
 {
    if (!string_is_empty(preset))
       strlcpy(runtime_shader_preset, preset, sizeof(runtime_shader_preset));

retroarch.h

@@ -288,7 +288,7 @@ void retroarch_unset_forced_fullscreen(void);
 
 void retroarch_set_current_core_type(enum rarch_core_type type, bool explicitly_set);
 
-void retroarch_set_shader_preset(char* preset);
+void retroarch_set_shader_preset(const char* preset);
 
 void retroarch_unset_shader_preset(void);