running
| qmlcompositor -platform eglfs
| qmlscene -platform wayland foo.qml
causes
QOpenGLShader::compile(Fragment): Compile failed.
ERROR: 0:6: 'float' : No precision defined for this type
ERROR: 0:7: 'vec4' : No precision defined for this type
ERROR: 0:8: 'float' : No precision defined for this type
ERROR: 0:11: 'vec4' : No precision defined for this type
ERROR: 0:12: 'vec3' : No precision defined for this type
ERROR: 0:13: 'vec3' : No precision defined for this type
ERROR: 6 compilation errors. No code generated.
*** Problematic Fragment shader source code ***
uniform sampler2D source;
uniform float qt_Opacity;
uniform vec4 color;
uniform float blend;
varying highp vec2 qt_TexCoord0;
void main() {
vec4 sourceColor = texture2D(source, qt_TexCoord0);
vec3 delta = sourceColor.rgb - vec3(0.5);
vec3 lowerContrast = vec3(0.5) + 0.4 * delta;
gl_FragColor = qt_Opacity * mix(sourceColor, color * sourceColor.a *
dot(lowerContrast, vec3(11, 16, 5) * (1. / 32.)), blend);
}
***
Signed-off-by: Andreas Müller <schnitzelt...@googlemail.com>
---
...002-Fix-ConstrastEffect-in-qml-compositor.patch | 48 ++++++++++++++++++++++
recipes-qt/qt5/qtwayland_git.bb | 4 ++
2 files changed, 52 insertions(+)
create mode 100644
recipes-qt/qt5/qtwayland/0002-Fix-ConstrastEffect-in-qml-compositor.patch
diff --git
a/recipes-qt/qt5/qtwayland/0002-Fix-ConstrastEffect-in-qml-compositor.patch
b/recipes-qt/qt5/qtwayland/0002-Fix-ConstrastEffect-in-qml-compositor.patch
new file mode 100644
index 0000000..1b40be6
--- /dev/null
+++ b/recipes-qt/qt5/qtwayland/0002-Fix-ConstrastEffect-in-qml-compositor.patch
@@ -0,0 +1,48 @@
+From 309e9b03d24eb6b0b8fff04d883329c2f93a6a1c Mon Sep 17 00:00:00 2001
+From: Pier Luigi Fiorini <pierluigi.fior...@gmail.com>
+Date: Sun, 29 Dec 2013 14:15:41 +0100
+Subject: [PATCH] Fix ConstrastEffect in qml-compositor
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Specify precision to make the shader working.
+
+Change-Id: I055fe47e1073403dc981274236fa82e091e0eca4
+Reviewed-by: Jørgen Lind <jorgen.l...@digia.com>
+Reviewed-by: Andy Nichols <andy.nich...@digia.com>
+Upstream-status: applied
+---
+ examples/qml-compositor/ContrastEffect.qml | 14 +++++++-------
+ 1 file changed, 7 insertions(+), 7 deletions(-)
+
+diff --git a/examples/qml-compositor/ContrastEffect.qml
b/examples/qml-compositor/ContrastEffect.qml
+index 5159950..c284b29 100644
+--- a/examples/qml-compositor/ContrastEffect.qml
++++ b/examples/qml-compositor/ContrastEffect.qml
+@@ -75,15 +75,15 @@ ShaderEffect {
+ vertexShader: source && source.isYInverted ? vShaderInvertedY : vShader
+
+ fragmentShader: "
+- uniform sampler2D source;
+- uniform float qt_Opacity;
+- uniform vec4 color;
+- uniform float blend;
++ uniform lowp sampler2D source;
++ uniform highp float qt_Opacity;
++ uniform highp vec4 color;
++ uniform highp float blend;
+ varying highp vec2 qt_TexCoord0;
+ void main() {
+- vec4 sourceColor = texture2D(source, qt_TexCoord0);
+- vec3 delta = sourceColor.rgb - vec3(0.5);
+- vec3 lowerContrast = vec3(0.5) + 0.4 * delta;
++ highp vec4 sourceColor = texture2D(source, qt_TexCoord0);
++ highp vec3 delta = sourceColor.rgb - vec3(0.5);
++ highp vec3 lowerContrast = vec3(0.5) + 0.4 * delta;
+ gl_FragColor = qt_Opacity * mix(sourceColor, color * sourceColor.a *
dot(lowerContrast, vec3(11, 16, 5) * (1. / 32.)), blend);
+ }
+ "
+--
+1.8.3.1
+
diff --git a/recipes-qt/qt5/qtwayland_git.bb b/recipes-qt/qt5/qtwayland_git.bb
index 640373e..cf91908 100644
--- a/recipes-qt/qt5/qtwayland_git.bb
+++ b/recipes-qt/qt5/qtwayland_git.bb
@@ -5,3 +5,7 @@ require ${PN}.inc
# qt5-git PV is only to indicate that this recipe is compatible with qt5 5.2.0
SRCREV = "3e9412e2fd91e64a565ed8ddbef76f57ca9413d5"
+
+SRC_URI += " \
+ file://0002-Fix-ConstrastEffect-in-qml-compositor.patch \
+"
--
1.8.3.1
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