diff options
Diffstat (limited to 'src/effects/shaders/leveladjust.frag')
-rw-r--r-- | src/effects/shaders/leveladjust.frag | 35 |
1 files changed, 0 insertions, 35 deletions
diff --git a/src/effects/shaders/leveladjust.frag b/src/effects/shaders/leveladjust.frag deleted file mode 100644 index 9462a0c..0000000 --- a/src/effects/shaders/leveladjust.frag +++ /dev/null @@ -1,35 +0,0 @@ -varying highp vec2 qt_TexCoord0; -uniform highp float qt_Opacity; -uniform lowp sampler2D source; -uniform highp vec3 minimumInputRGB; -uniform highp vec3 maximumInputRGB; -uniform highp float minimumInputAlpha; -uniform highp float maximumInputAlpha; -uniform highp vec3 minimumOutputRGB; -uniform highp vec3 maximumOutputRGB; -uniform highp float minimumOutputAlpha; -uniform highp float maximumOutputAlpha; -uniform highp vec3 gamma; - -highp float linearstep(highp float e0, highp float e1, highp float x) { - return clamp((x - e0) / (e1 - e0), 0.0, 1.0); -} - -void main(void) { - highp vec4 textureColor = texture2D(source, qt_TexCoord0.st); - highp vec4 color = vec4(textureColor.rgb / max(1.0/256.0, textureColor.a), textureColor.a); - - color.r = linearstep(minimumInputRGB.r, maximumInputRGB.r, color.r); - color.g = linearstep(minimumInputRGB.g, maximumInputRGB.g, color.g); - color.b = linearstep(minimumInputRGB.b, maximumInputRGB.b, color.b); - color.a = linearstep(minimumInputAlpha, maximumInputAlpha, color.a); - - color.rgb = pow(color.rgb, gamma); - - color.r = minimumOutputRGB.r + color.r * (maximumOutputRGB.r - minimumOutputRGB.r); - color.g = minimumOutputRGB.g + color.g * (maximumOutputRGB.g - minimumOutputRGB.g); - color.b = minimumOutputRGB.b + color.b * (maximumOutputRGB.b - minimumOutputRGB.b); - color.a = minimumOutputAlpha + color.a * (maximumOutputAlpha - minimumOutputAlpha); - - gl_FragColor = vec4(color.rgb * color.a, color.a) * qt_Opacity; -} |