Added missing precision specifiers to custom shader effect.

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

Reviewed-by: Tom

4 files changed, 8 insertions, 8 deletions

diff --git a/src/opengl/gl2paintengineex/qglengineshadermanager_p.h b/src/opengl/gl2paintengineex/qglengineshadermanager_p.h
index d5241a8..ace6b63 100644
--- a/src/opengl/gl2paintengineex/qglengineshadermanager_p.h
+++ b/src/opengl/gl2paintengineex/qglengineshadermanager_p.h
@@ -209,7 +209,7 @@
     (QGLCustomShaderStage). The shader will implement a pre-defined method name
     which Qt's fragment pipeline will call:
 
-        lowp vec4 customShader(sampler2d src, vec2 srcCoords)
+        lowp vec4 customShader(lowp sampler2d imageTexture, highp vec2 textureCoords)
 
     The provided src and srcCoords parameters can be used to sample from the
     source image.
diff --git a/src/opengl/gl2paintengineex/qglengineshadersource_p.h b/src/opengl/gl2paintengineex/qglengineshadersource_p.h
index cf930f3..a8e2e72 100644
--- a/src/opengl/gl2paintengineex/qglengineshadersource_p.h
+++ b/src/opengl/gl2paintengineex/qglengineshadersource_p.h
@@ -293,7 +293,7 @@ static const char* const qglslImageSrcFragmentShader = "\
 static const char* const qglslCustomSrcFragmentShader = "\
     varying highp vec2      textureCoords; \
     uniform       sampler2D imageTexture; \
-    lowp vec4 customShader(sampler2D texture, vec2 coords); \
+    lowp vec4 customShader(lowp sampler2D texture, highp vec2 coords); \
     lowp vec4 srcPixel() { \
         return customShader(imageTexture, textureCoords); \
     }";
diff --git a/src/opengl/qglpixmapfilter.cpp b/src/opengl/qglpixmapfilter.cpp
index e1ee61a..df7811e 100644
--- a/src/opengl/qglpixmapfilter.cpp
+++ b/src/opengl/qglpixmapfilter.cpp
@@ -418,7 +418,7 @@ QByteArray QGLPixmapBlurFilter::generateBlurShader(int radius, bool gaussianBlur
         source.append("uniform highp vec4      clip;\n");
     }
 
-    source.append("lowp vec4 customShader(sampler2D src, vec2 srcCoords) {\n");
+    source.append("lowp vec4 customShader(lowp sampler2D src, highp vec2 srcCoords) {\n");
 
     QVector<qreal> sampleOffsets;
     QVector<qreal> weights;
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