Added missing precision specifiers to custom shader effect.

The precision specifiers need to be there on OpenGL ES 2.0.

Reviewed-by: Tom

1 files changed, 5 insertions, 5 deletions

diff --git a/src/opengl/qgraphicsshadereffect.cpp b/src/opengl/qgraphicsshadereffect.cpp
index d3f52f6..5e37d62 100644
--- a/src/opengl/qgraphicsshadereffect.cpp
+++ b/src/opengl/qgraphicsshadereffect.cpp
@@ -64,7 +64,7 @@ QT_BEGIN_NAMESPACE
     The specific effect is defined by a fragment of GLSL source code
     supplied to setPixelShaderFragment().  This source code must define a
     function with the signature
-    \c{lowp vec4 customShader(sampler2D imageTexture, vec2 textureCoords)}
+    \c{lowp vec4 customShader(lowp sampler2D imageTexture, highp vec2 textureCoords)}
     that returns the source pixel value
     to use in the paint engine's shader program.  The shader fragment
     is linked with the regular shader code used by the GL2 paint engine
@@ -77,7 +77,7 @@ QT_BEGIN_NAMESPACE
     \code
     static char const colorizeShaderCode[] =
         "uniform lowp vec4 effectColor;\n"
-        "lowp vec4 customShader(sampler2D imageTexture, vec2 textureCoords) {\n"
+        "lowp vec4 customShader(lowp sampler2D imageTexture, highp vec2 textureCoords) {\n"
         "    vec4 src = texture2D(imageTexture, textureCoords);\n"
         "    float gray = dot(src.rgb, vec3(0.212671, 0.715160, 0.072169));\n"
         "    vec4 colorize = 1.0-((1.0-gray)*(1.0-effectColor));\n"
@@ -130,7 +130,7 @@ QT_BEGIN_NAMESPACE
 */
 
 static const char qglslDefaultImageFragmentShader[] = "\
-    lowp vec4 customShader(sampler2D imageTexture, vec2 textureCoords) { \
+    lowp vec4 customShader(lowp sampler2D imageTexture, highp vec2 textureCoords) { \
         return texture2D(imageTexture, textureCoords); \
     }\n";
 
@@ -215,13 +215,13 @@ QByteArray QGraphicsShaderEffect::pixelShaderFragment() const
     this shader effect to \a code.
 
     The \a code must define a GLSL function with the signature
-    \c{lowp vec4 customShader(sampler2D imageTexture, vec2 textureCoords)}
+    \c{lowp vec4 customShader(lowp sampler2D imageTexture, highp vec2 textureCoords)}
     that returns the source pixel value to use in the paint engine's
     shader program.  The following is the default pixel shader fragment,
     which draws a pixmap with no effect applied:
 
     \code
-    lowp vec4 customShader(sampler2D imageTexture, vec2 textureCoords) {
+    lowp vec4 customShader(lowp sampler2D imageTexture, highp vec2 textureCoords) {
         return texture2D(imageTexture, textureCoords);
     }
     \endcode