Remove qtgraphicaleffects sources and add note about its state in Qt 6HEADdev

Add a README.md mentioning the documentation on where the ported
effects can be found, as well as how to check out the Qt5 branch.

Pick-to: 6.2
Fixes: QTBUG-95757
Change-Id: Ib47c7e73f8622c8e287df0f74c6f16a5113b357e
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>

1 files changed, 0 insertions, 27 deletions

diff --git a/src/effects/shaders_ng/fastblur_internal.vert b/src/effects/shaders_ng/fastblur_internal.vert
deleted file mode 100644
index e9a14b0..0000000
--- a/src/effects/shaders_ng/fastblur_internal.vert
+++ /dev/null
@@ -1,27 +0,0 @@
-#version 440
-
-layout(location = 0) in vec4 qt_Vertex;
-layout(location = 1) in vec2 qt_MultiTexCoord0;
-
-layout(location = 0) out vec2 qt_TexCoord0;
-layout(location = 1) out vec2 qt_TexCoord1;
-layout(location = 2) out vec2 qt_TexCoord2;
-layout(location = 3) out vec2 qt_TexCoord3;
-
-layout(std140, binding = 0) uniform buf {
-    mat4 qt_Matrix;
-    float qt_Opacity;
-    float xStep;
-    float yStep;
-};
-
-out gl_PerVertex { vec4 gl_Position; };
-
-void main()
-{
-    qt_TexCoord0 = vec2(qt_MultiTexCoord0.x + xStep, qt_MultiTexCoord0.y + yStep * 0.36);
-    qt_TexCoord1 = vec2(qt_MultiTexCoord0.x + xStep * 0.36, qt_MultiTexCoord0.y - yStep);
-    qt_TexCoord2 = vec2(qt_MultiTexCoord0.x - xStep * 0.36, qt_MultiTexCoord0.y + yStep);
-    qt_TexCoord3 = vec2(qt_MultiTexCoord0.x - xStep, qt_MultiTexCoord0.y - yStep * 0.36);
-    gl_Position = qt_Matrix * qt_Vertex;
-}