Fixed two precision issues with the levels and lookup filters.

mtfrctl · Sep 13, 2013 · c80666c · c80666c
1 parent 0da6c5c
commit c80666c
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Showing 2 changed files with 10 additions and 10 deletions.
diff --git a/framework/Source/GPUImageLevelsFilter.m b/framework/Source/GPUImageLevelsFilter.m
@@ -23,15 +23,15 @@
  varying highp vec2 textureCoordinate;
 
  uniform sampler2D inputImageTexture;
- uniform lowp vec3 levelMinimum;
- uniform lowp vec3 levelMiddle;
- uniform lowp vec3 levelMaximum;
- uniform lowp vec3 minOutput;
- uniform lowp vec3 maxOutput;
+ uniform mediump vec3 levelMinimum;
+ uniform mediump vec3 levelMiddle;
+ uniform mediump vec3 levelMaximum;
+ uniform mediump vec3 minOutput;
+ uniform mediump vec3 maxOutput;
 
  void main()
  {
-     lowp vec4 textureColor = texture2D(inputImageTexture, textureCoordinate);
+     mediump vec4 textureColor = texture2D(inputImageTexture, textureCoordinate);
 
      gl_FragColor = vec4(LevelsControl(textureColor.rgb, levelMinimum, levelMiddle, levelMaximum, minOutput, maxOutput), textureColor.a);
  }

diff --git a/framework/Source/GPUImageLookupFilter.m b/framework/Source/GPUImageLookupFilter.m
@@ -11,15 +11,15 @@
 
  void main()
  {
-     lowp vec4 textureColor = texture2D(inputImageTexture, textureCoordinate);
+     highp vec4 textureColor = texture2D(inputImageTexture, textureCoordinate);
 
-     mediump float blueColor = textureColor.b * 63.0;
+     highp float blueColor = textureColor.b * 63.0;
 
-     mediump vec2 quad1;
+     highp vec2 quad1;
      quad1.y = floor(floor(blueColor) / 8.0);
      quad1.x = floor(blueColor) - (quad1.y * 8.0);
 
-     mediump vec2 quad2;
+     highp vec2 quad2;
      quad2.y = floor(ceil(blueColor) / 8.0);
      quad2.x = ceil(blueColor) - (quad2.y * 8.0);