duckstation

duckstation, but archived from the revision just before upstream changed it to a proprietary software project, this version is the libre one
git clone https://git.neptards.moe/u3shit/duckstation.git
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simple-flip.glsl (600B)

      1 /*
      2 [configuration]
      3 
      4 [OptionRangeInteger]
      5 GUIName = Flip Horizontally
      6 OptionName = G_FLIP_HORZ
      7 MinValue = 0
      8 MaxValue = 1
      9 StepAmount = 1
     10 DefaultValue = 1
     11 
     12 [OptionRangeInteger]
     13 GUIName = Flip Vertically
     14 OptionName = G_FLIP_VERT
     15 MinValue = 0
     16 MaxValue = 1
     17 StepAmount = 1
     18 DefaultValue = 0
     19 
     20 [/configuration]
     21 */
     22 
     23 void main()
     24 {
     25   vec2 uv = GetCoordinates();
     26   vec2 ts = GetInvResolution();
     27 
     28   vec2 pos = uv;
     29 
     30   if (GetOption(G_FLIP_HORZ) == 1) {
     31     pos.x = 1.0 - pos.x;
     32   }
     33   
     34   if (GetOption(G_FLIP_VERT) == 1) {
     35     pos.y = 1.0 - pos.y;
     36   }
     37 
     38   vec4 sum = SampleLocation(pos);
     39 
     40   SetOutput(saturate(sum));
     41 }