Migrate shadereffects example to be cross-backend

...while demonstrating best practices like file selectors.

Task-number: QTBUG-52914
Change-Id: Ibf7bca77b7b142f5ccb956e05efc5be974d53c79
Reviewed-by: Andy Nichols <andy.nichols@qt.io>

1 files changed, 17 insertions, 0 deletions

diff --git a/examples/quick/shadereffects/content/shaders/+hlsl/colorize.frag b/examples/quick/shadereffects/content/shaders/+hlsl/colorize.frag
new file mode 100644
index 0000000000..d6e65b6b10
--- /dev/null
+++ b/examples/quick/shadereffects/content/shaders/+hlsl/colorize.frag
@@ -0,0 +1,17 @@
+cbuffer ConstantBuffer : register(b0)
+{
+    float4x4 qt_Matrix;
+    float qt_Opacity;
+    float4 tint;
+};
+
+Texture2D source : register(t0);
+SamplerState sourceSampler : register(s0);
+
+float4 main(float4 position : SV_POSITION, float2 coord : TEXCOORD0) : SV_TARGET
+{
+    float4 c = source.Sample(sourceSampler, coord);
+    float lo = min(min(c.x, c.y), c.z);
+    float hi = max(max(c.x, c.y), c.z);
+    return float4(lerp(float3(lo, lo, lo), float3(hi, hi, hi), tint.xyz), c.w) * qt_Opacity;
+}