let it snow

gfx/drivers/gl_shaders/pipeline_snowflake.glsl.frag.h

@@ -0,0 +1,65 @@
+/* credits to: TheTimJames 
+   https://www.shadertoy.com/view/Md2GRw
+*/
+
+#include "shaders_common.h"
+
+static const char* stock_fragment_xmb_snowflake = GLSL(
+   uniform float time;
+   uniform float atime;
+   uniform vec2 OutputSize;
+   vec2 uv;
+
+   float rand(vec2 co)
+   {
+      return fract(sin(dot(co.xy, vec2(12.9898, 78.233))) * 43758.5453);
+   }
+
+   float snow(vec3 pos, vec2 uv, float o)
+   {
+      vec2 d = (pos.xy - uv);
+      float a = atan(d.y,d.x)+sin(atime*1.+o)*10.;
+      
+      float dist = d.x*d.x + d.y*d.y;
+      
+      if(dist < pos.z/400.){
+         float col = 0.0;
+         if(sin(a*8.) < 0.0){col=1.0;}
+         if(dist<pos.z/800.0){col+=1.0;}
+         return col*pos.z;
+      }
+      
+      return 0.0;
+   }
+
+   float col(vec2 c)
+   {
+      float color = 0.0;
+      for (int i = 1; i < 15; i++)
+      {
+		   float o = rand(float(i) / 3.) * 15 * 2.0;
+		   float z = rand(float(i) + 13.0);
+		   float x = 1.8 - (3.6) * (rand(floor((time*((z+1.0)/2.0)+o)/2.0)) + sin(time*o/1000.0)/10.0);
+		   float y = 1.0-mod((time*((z+1.0)/2.0))+o, 2.0);
+		
+		   color += snow(vec3(x,y,z),c,o);    
+	   }
+
+
+	
+      return color;
+   } 
+
+   void main(void)
+   {
+      uv = gl_FragCoord.xy / OutputSize.xy;
+      uv = uv * 2.0 - 1.0;
+      vec2 p = uv;
+      p.x *= OutputSize.x / OutputSize.y;
+      
+      atime = (time + 1)/4.0;
+	
+      gl_FragColor = vec4(col(p));
+   }
+
+);

gfx/drivers_shader/shader_glsl.c

@@ -129,6 +129,7 @@ static const char *glsl_prefixes[] = {
 #include "../drivers/gl_shaders/modern_pipeline_xmb_ribbon.glsl.vert.h"
 #include "../drivers/gl_shaders/pipeline_xmb_ribbon.glsl.frag.h"
 #include "../drivers/gl_shaders/pipeline_bokeh.glsl.frag.h"
+#include "../drivers/gl_shaders/pipeline_snowflake.glsl.frag.h"
 #endif
 
 typedef struct glsl_shader_data
@@ -1095,6 +1096,21 @@ static void *gl_glsl_init(void *data, const char *path)
          &shader_prog_info);
    gl_glsl_find_uniforms(glsl, 0, glsl->prg[VIDEO_SHADER_MENU_5].id,
          &glsl->uniforms[VIDEO_SHADER_MENU_5]);
+
+#if defined(HAVE_OPENGLES)
+   shader_prog_info.vertex   = stock_vertex_xmb_snow_modern;
+#else
+   shader_prog_info.vertex   = glsl_core ? stock_vertex_xmb_snow_modern : stock_vertex_xmb_snow_legacy;
+#endif
+   shader_prog_info.fragment = stock_fragment_xmb_snowflake;
+
+   gl_glsl_compile_program(
+         glsl,
+         VIDEO_SHADER_MENU_6,
+         &glsl->prg[VIDEO_SHADER_MENU_6],
+         &shader_prog_info);
+   gl_glsl_find_uniforms(glsl, 0, glsl->prg[VIDEO_SHADER_MENU_6].id,
+         &glsl->uniforms[VIDEO_SHADER_MENU_6]);
 #endif
 
    gl_glsl_reset_attrib(glsl);

gfx/video_driver.h

@@ -56,6 +56,7 @@
 #define VIDEO_SHADER_MENU_3      (GFX_MAX_SHADERS - 4)
 #define VIDEO_SHADER_MENU_4      (GFX_MAX_SHADERS - 5)
 #define VIDEO_SHADER_MENU_5      (GFX_MAX_SHADERS - 6)
+#define VIDEO_SHADER_MENU_6      (GFX_MAX_SHADERS - 7)
 
 #endif
 

intl/msg_hash_us.h

@@ -2542,6 +2542,8 @@ MSG_HASH(
       )
 MSG_HASH(MENU_ENUM_LABEL_VALUE_SHADER_PIPELINE_BOKEH,
       "Bokeh")
+MSG_HASH(MENU_ENUM_LABEL_VALUE_SHADER_PIPELINE_SNOWFLAKE,
+      "Snowflake")
 MSG_HASH(MENU_ENUM_LABEL_VALUE_NETPLAY_REFRESH_ROOMS,
       "Refresh Room List")
 MSG_HASH(MENU_ENUM_LABEL_VALUE_NETPLAY_ROOM_NICKNAME,

menu/cbs/menu_cbs_get_value.c

@@ -246,6 +246,10 @@ static void menu_action_setting_disp_set_label_pipeline(
          strlcpy(s,
                msg_hash_to_str(
                   MENU_ENUM_LABEL_VALUE_SHADER_PIPELINE_BOKEH), len);
+      case XMB_SHADER_PIPELINE_SNOWFLAKE:
+         strlcpy(s,
+               msg_hash_to_str(
+                  MENU_ENUM_LABEL_VALUE_SHADER_PIPELINE_SNOWFLAKE), len);
          break;
    }
 

menu/drivers/xmb.c

@@ -2759,6 +2759,9 @@ static void xmb_draw_bg(
          case XMB_SHADER_PIPELINE_BOKEH:
             draw.pipeline.id  = VIDEO_SHADER_MENU_5;
             break;
+         case XMB_SHADER_PIPELINE_SNOWFLAKE:
+            draw.pipeline.id  = VIDEO_SHADER_MENU_6;
+            break;
          default:
             break;
       }

menu/drivers_display/menu_display_gl.c

@@ -185,6 +185,7 @@ static void menu_display_gl_draw_pipeline(void *data)
       case VIDEO_SHADER_MENU_3:
       case VIDEO_SHADER_MENU_4:
       case VIDEO_SHADER_MENU_5:
+      case VIDEO_SHADER_MENU_6:
          shader_info.data       = NULL;
          shader_info.idx        = draw->pipeline.id;
          shader_info.set_active = true;
@@ -215,6 +216,7 @@ static void menu_display_gl_draw_pipeline(void *data)
       case VIDEO_SHADER_MENU_3:
       case VIDEO_SHADER_MENU_4:
       case VIDEO_SHADER_MENU_5:
+      case VIDEO_SHADER_MENU_6:
 #ifndef HAVE_PSGL
          uniform_param.type              = UNIFORM_2F;
          uniform_param.lookup.ident      = "OutputSize";

menu/menu_driver.h

@@ -260,6 +260,7 @@ enum xmb_shader_pipeline
    XMB_SHADER_PIPELINE_SIMPLE_SNOW,
    XMB_SHADER_PIPELINE_SNOW,
    XMB_SHADER_PIPELINE_BOKEH,
+   XMB_SHADER_PIPELINE_SNOWFLAKE,
    XMB_SHADER_PIPELINE_LAST
 };
 

msg_hash.h

@@ -447,6 +447,7 @@ enum msg_hash_enums
    MENU_LABEL(SHADER_PIPELINE_SIMPLE_SNOW),
    MENU_LABEL(SHADER_PIPELINE_SNOW),
    MENU_LABEL(SHADER_PIPELINE_BOKEH),
+   MENU_LABEL(SHADER_PIPELINE_SNOWFLAKE),
 
    MENU_LABEL(MATERIALUI_MENU_HEADER_OPACITY),
    MENU_LABEL(MATERIALUI_MENU_FOOTER_OPACITY),