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 <[email protected]>
Reviewed-by: Volker Hilsheimer <[email protected]>

1 files changed, 0 insertions, 25 deletions

diff --git a/src/effects/shaders_ng/fastblur_internal.frag b/src/effects/shaders_ng/fastblur_internal.frag
deleted file mode 100644
index 7a608de..0000000
--- a/src/effects/shaders_ng/fastblur_internal.frag
+++ /dev/null
@@ -1,25 +0,0 @@
-#version 440
-
-layout(location = 0) in vec2 qt_TexCoord0;
-layout(location = 1) in vec2 qt_TexCoord1;
-layout(location = 2) in vec2 qt_TexCoord2;
-layout(location = 3) in vec2 qt_TexCoord3;
-layout(location = 0) out vec4 fragColor;
-
-layout(std140, binding = 0) uniform buf {
-    mat4 qt_Matrix;
-    float qt_Opacity;
-    float xStep;
-    float yStep;
-};
-
-layout(binding = 1) uniform sampler2D source;
-
-void main()
-{
-    vec4 sourceColor = (texture(source, qt_TexCoord0) +
-                        texture(source, qt_TexCoord1) +
-                        texture(source, qt_TexCoord2) +
-                        texture(source, qt_TexCoord3)) * 0.25;
-    fragColor = sourceColor * qt_Opacity;
-}