Move shaders to subdirectory

shaders/image.vert

@@ -0,0 +1,18 @@
+#version 330
+
+uniform sampler2D qt_Texture0;
+in vec2 qt_Vertex;
+in vec2 qt_MultiTexCoord0;
+out vec2 qt_TexCoord0;
+uniform vec2 viewport;
+uniform vec2 offset;
+uniform float zoom;
+
+void main(void)
+{
+    vec2 texSize = vec2(textureSize(qt_Texture0, 0));
+    vec2 scale = viewport / texSize;
+    vec2 offsetRel = offset / texSize;
+    gl_Position = vec4(qt_Vertex, 0.0, 1.0);
+    qt_TexCoord0 = (qt_MultiTexCoord0 * scale + offsetRel) * zoom;
+}