Added precision to all uniforms which did not have it.

If precision qualifier is missing, shader compilation
may fail on some GPU:s.

Change-Id: I8bad4855203ba9f0b233a877b1a012c608801bd6
Reviewed-by: Kim Gronholm <kim.1.gronholm@nokia.com>

15 files changed, 27 insertions, 27 deletions

diff --git a/src/effects/Blend.qml b/src/effects/Blend.qml
index 64369fc..4d44651 100644
--- a/src/effects/Blend.qml
+++ b/src/effects/Blend.qml
@@ -147,8 +147,8 @@ Item {
         property string fragmentShaderBegin: "
             varying mediump vec2 qt_TexCoord0;
             uniform highp float qt_Opacity;
-            uniform sampler2D backgroundSource;
-            uniform sampler2D foregroundSource;
+            uniform lowp sampler2D backgroundSource;
+            uniform lowp sampler2D foregroundSource;
 
             highp float RGBtoL(highp vec3 color) {
                 highp float cmin = min(color.r, min(color.g, color.b));
diff --git a/src/effects/BrightnessContrast.qml b/src/effects/BrightnessContrast.qml
index badc65c..5e0f16a 100644
--- a/src/effects/BrightnessContrast.qml
+++ b/src/effects/BrightnessContrast.qml
@@ -75,7 +75,7 @@ Item {
         fragmentShader: "
             varying mediump vec2 qt_TexCoord0;
             uniform highp float qt_Opacity;
-            uniform sampler2D source;
+            uniform lowp sampler2D source;
             uniform highp float brightness;
             uniform highp float contrast;
             void main() {
diff --git a/src/effects/ColorOverlay.qml b/src/effects/ColorOverlay.qml
index 9eafdf3..387334c 100644
--- a/src/effects/ColorOverlay.qml
+++ b/src/effects/ColorOverlay.qml
@@ -72,7 +72,7 @@ Item {
         fragmentShader: "
             varying mediump vec2 qt_TexCoord0;
             uniform highp float qt_Opacity;
-            uniform sampler2D source;
+            uniform lowp sampler2D source;
             uniform highp vec4 color;
             void main() {
                 highp vec4 pixelColor = texture2D(source, qt_TexCoord0);
diff --git a/src/effects/Colorize.qml b/src/effects/Colorize.qml
index efc25b5..02078eb 100644
--- a/src/effects/Colorize.qml
+++ b/src/effects/Colorize.qml
@@ -76,7 +76,7 @@ Item {
         fragmentShader: "
             varying mediump vec2 qt_TexCoord0;
             uniform highp float qt_Opacity;
-            uniform sampler2D source;
+            uniform lowp sampler2D source;
             uniform highp float hue;
             uniform highp float saturation;
             uniform highp float lightness;
diff --git a/src/effects/ConicalGradient.qml b/src/effects/ConicalGradient.qml
index d5dcfa0..f0b2f6b 100644
--- a/src/effects/ConicalGradient.qml
+++ b/src/effects/ConicalGradient.qml
@@ -100,13 +100,13 @@ Item {
         property string noMaskShader: "
             varying mediump vec2 qt_TexCoord0;
             uniform lowp sampler2D gradientSource;
-            uniform float qt_Opacity;
-            uniform float startAngle;
-            uniform vec2 center;
+            uniform highp float qt_Opacity;
+            uniform highp float startAngle;
+            uniform highp vec2 center;
 
             void main() {
-                const float PI = 3.14159265;
-                const float PIx2inv = 0.1591549;
+                const highp float PI = 3.14159265;
+                const highp float PIx2inv = 0.1591549;
                 highp float a = (atan((center.y - qt_TexCoord0.t), (center.x - qt_TexCoord0.s)) + PI - startAngle) * PIx2inv;
                 gl_FragColor = texture2D(gradientSource, vec2(0.0, a)) * qt_Opacity;
             }
@@ -116,14 +116,14 @@ Item {
             varying mediump vec2 qt_TexCoord0;
             uniform lowp sampler2D gradientSource;
             uniform lowp sampler2D maskSource;
-            uniform float qt_Opacity;
-            uniform float startAngle;
-            uniform vec2 center;
+            uniform highp float qt_Opacity;
+            uniform highp float startAngle;
+            uniform highp vec2 center;
 
             void main() {
                 lowp float maskAlpha = texture2D(maskSource, qt_TexCoord0).a;
-                const float PI = 3.14159265;
-                const float PIx2inv = 0.1591549;
+                const highp float PI = 3.14159265;
+                const highp float PIx2inv = 0.1591549;
                 highp float a = (atan((center.y - qt_TexCoord0.t), (center.x - qt_TexCoord0.s)) + PI - startAngle) * PIx2inv;
                 gl_FragColor = texture2D(gradientSource, vec2(0.0, a)) * maskAlpha * qt_Opacity;
             }
diff --git a/src/effects/Desaturate.qml b/src/effects/Desaturate.qml
index 4fe91f5..87c7dac 100644
--- a/src/effects/Desaturate.qml
+++ b/src/effects/Desaturate.qml
@@ -72,7 +72,7 @@ Item {
         fragmentShader: "
             varying highp vec2 qt_TexCoord0;
             uniform highp float qt_Opacity;
-            uniform sampler2D source;
+            uniform lowp sampler2D source;
             uniform highp float desaturation;
             void main(void) {
                 lowp vec4 textureColor = texture2D(source, qt_TexCoord0.st);
diff --git a/src/effects/DirectionalBlur.qml b/src/effects/DirectionalBlur.qml
index ee12b1a..47cc2ac 100644
--- a/src/effects/DirectionalBlur.qml
+++ b/src/effects/DirectionalBlur.qml
@@ -85,7 +85,7 @@ Item {
         property string fragmentShaderSkeleton: "
             varying highp vec2 qt_TexCoord0;
             uniform highp float qt_Opacity;
-            uniform sampler2D source;
+            uniform lowp sampler2D source;
             uniform highp float len;
             uniform highp float samples;
             uniform highp float weight;
diff --git a/src/effects/GammaAdjust.qml b/src/effects/GammaAdjust.qml
index 757c4ac..ef017ab 100644
--- a/src/effects/GammaAdjust.qml
+++ b/src/effects/GammaAdjust.qml
@@ -72,7 +72,7 @@ Item {
         fragmentShader: "
             varying highp vec2 qt_TexCoord0;
             uniform highp float qt_Opacity;
-            uniform sampler2D source;
+            uniform lowp sampler2D source;
             uniform highp float gamma;
             void main(void) {
                 highp vec4 originalColor = texture2D(source, qt_TexCoord0.st);
diff --git a/src/effects/LevelAdjust.qml b/src/effects/LevelAdjust.qml
index b71fedd..434b15d 100644
--- a/src/effects/LevelAdjust.qml
+++ b/src/effects/LevelAdjust.qml
@@ -83,7 +83,7 @@ Item {
         fragmentShader: "
             varying highp vec2 qt_TexCoord0;
             uniform highp float qt_Opacity;
-            uniform sampler2D source;
+            uniform lowp sampler2D source;
             uniform highp vec3 minimumInputRGB;
             uniform highp vec3 maximumInputRGB;
             uniform highp float minimumInputAlpha;
diff --git a/src/effects/OpacityMask.qml b/src/effects/OpacityMask.qml
index d338350..4ea63e8 100644
--- a/src/effects/OpacityMask.qml
+++ b/src/effects/OpacityMask.qml
@@ -77,8 +77,8 @@ Item {
         fragmentShader: "
             varying highp vec2 qt_TexCoord0;
             uniform highp float qt_Opacity;
-            uniform sampler2D source;
-            uniform sampler2D maskSource;
+            uniform lowp sampler2D source;
+            uniform lowp sampler2D maskSource;
             void main(void) {
                 gl_FragColor = texture2D(source, qt_TexCoord0.st) * (texture2D(maskSource, qt_TexCoord0.st).a) * qt_Opacity;
             }
diff --git a/src/effects/RadialBlur.qml b/src/effects/RadialBlur.qml
index b19d685..aff3c3d 100644
--- a/src/effects/RadialBlur.qml
+++ b/src/effects/RadialBlur.qml
@@ -92,7 +92,7 @@ Item {
         property string fragmentShaderSkeleton: "
             varying highp vec2 qt_TexCoord0;
             uniform highp float qt_Opacity;
-            uniform sampler2D source;
+            uniform lowp sampler2D source;
             uniform highp float angleSin;
             uniform highp float angleCos;
             uniform highp float angleSinStep;
diff --git a/src/effects/RecursiveBlur.qml b/src/effects/RecursiveBlur.qml
index e50cd0b..52a01b2 100644
--- a/src/effects/RecursiveBlur.qml
+++ b/src/effects/RecursiveBlur.qml
@@ -125,7 +125,7 @@ Item {
         fragmentShader: "
             varying mediump vec2 qt_TexCoord0;
             uniform highp float qt_Opacity;
-            uniform sampler2D source;
+            uniform lowp sampler2D source;
             void main() {
                 gl_FragColor = texture2D(source, qt_TexCoord0) * qt_Opacity;
             }
diff --git a/src/effects/ThresholdMask.qml b/src/effects/ThresholdMask.qml
index 9373a5e..5f995d7 100644
--- a/src/effects/ThresholdMask.qml
+++ b/src/effects/ThresholdMask.qml
@@ -81,8 +81,8 @@ Item {
         fragmentShader: "
             varying highp vec2 qt_TexCoord0;
             uniform highp float qt_Opacity;
-            uniform sampler2D source;
-            uniform sampler2D maskSource;
+            uniform lowp sampler2D source;
+            uniform lowp sampler2D maskSource;
             uniform highp float threshold;
             uniform highp float spread;
             void main(void) {
diff --git a/src/effects/ZoomBlur.qml b/src/effects/ZoomBlur.qml
index 2e80980..83c6173 100644
--- a/src/effects/ZoomBlur.qml
+++ b/src/effects/ZoomBlur.qml
@@ -87,7 +87,7 @@ Item {
         property string fragmentShaderSkeleton: "
             varying highp vec2 qt_TexCoord0;
             uniform highp float qt_Opacity;
-            uniform sampler2D source;
+            uniform lowp sampler2D source;
             uniform highp float len;
             uniform highp float weight;
             uniform highp float samples;
diff --git a/src/effects/internal/GaussianDirectionalBlur.qml b/src/effects/internal/GaussianDirectionalBlur.qml
index 50b5d14..5515a96 100644
--- a/src/effects/internal/GaussianDirectionalBlur.qml
+++ b/src/effects/internal/GaussianDirectionalBlur.qml
@@ -241,7 +241,7 @@ Item {
         property string fragmentShaderBegin: "
             varying mediump vec2 qt_TexCoord0;
             uniform highp float qt_Opacity;
-            uniform sampler2D source;
+            uniform lowp sampler2D source;
             uniform highp vec3 delta;
             uniform highp vec3 factor_0_2;
             uniform highp vec3 factor_3_5;