stuff.txt

Shaders:
https://www.dropbox.com/s/ol6yutuy4anens4/glsl.zip?dl=0
Roy Corser Sure...a link for a complete pack. Use only glsl....cg are not supported. I have a good result using "2xsal, x2, nearest" but first disable hw bilinear filtering. Have fun!
(~/.config/retroarch/shaders ?)
/opt/retropie/emulators/retroarch/shader
Jälkimmäinen näyttäs olevan ainakin retroarchin oletushakemisto.
interlaced.glsl ei näyttäny hyvältä.
Ei toiminu suoraan RetroPiestä otettu crt-pi.glsl/crt-pi.glslp.
https://mega.nz/#!ON501ZwT!MSxPmeSCn55G-GmYxiay0zL6NGyU6HTrUbApanJ16nY
/opt/retropie/emulators/retroarch/shader
RetroArch-menu: Settings->Video->Integer scale
https://www.facebook.com/groups/1131759626884432/permalink/1157090121018049/

UTF-8, UNIX

http://www.shaderific.com/glsl-functions/

http://www.khronos.org/files/opengl-quick-reference-card.pdf

https://github.com/libretro/RetroArch/wiki/GLSL-shaders

https://github.com/libretro/common-shaders/tree/master/docs
-  scale_typeN (string): This can be set to one of these values:
   "source":   Output size of shader pass N is relative to the input size
               as found in IN.video_size. Value is float.
   "viewport": Output size of shader pass N is relative to the size of the
               window viewport. Value is float.
               This value can change over time if the user 
               resizes his/her window!
   "absolute": Output size is statically defined to a certain size.
               Useful for hi-res blenders or similiar.
   
   If no scale type is assumed, it is assumed that it is set to "source"
   with scaleN set to 1.0.

   It is possible to set scale_type_xN and scale_type_yN to specialize
   the scaling type in either direction. scale_typeN however
   overrides both of these.

   IN.video_size: The size of the actual video data in the texture, 
   e.g for a SNES this will be generally 
   (256, 224) for normal resolution frames.   

   IN.texture_size: This is the size of the texture itself. 
   Optimally power-of-two sized.

   IN.output_size: The size of the video output. 
   This is the size of the viewport shown on screen.
   
   
uniform COMPAT_PRECISION vec2 OutputSize;
uniform COMPAT_PRECISION vec2 TextureSize;
uniform COMPAT_PRECISION vec2 InputSize;
   
scale_type_x0 = "viewport"
scale_x0 = "1.000000"
scale_type_y0 = "viewport"
scale_y0 = "1.000000"

scale_type_x0 = "source"
scale_x0 = "1.000000"
scale_type_y0 = "source"
scale_y0 = "3.000000"

  //viewport
  vec4 _res;
  _res = COMPAT_TEXTURE(Texture, TEX0.xy);
  _TMP1 = TEX0.y*TextureSize.y;
  _TMP1 = gl_FragCoord.y;
  _TMP1 = mod(_TMP1-1.5, 3.0) / 3.0;
  FragColor = _res - (_TMP1*0.5);
  
  //source
  vec4 _res;
  _res = COMPAT_TEXTURE(Texture, TEX0.xy);
  _TMP1 = TEX0.y*TextureSize.y;
  _TMP2 = fract(_TMP1);
  if (_TMP2 < 0.5) { 
    FragColor = _res;
  } else {
    FragColor = _res * 0.5;
  }