1 files changed, 19 insertions, 0 deletions
diff --git a/src/gui/painting/shaders/backingstorecompose.vert b/src/gui/painting/shaders/backingstorecompose.vert
new file mode 100644
index 0000000000..0c72c97419
--- /dev/null
+++ b/src/gui/painting/shaders/backingstorecompose.vert
@@ -0,0 +1,19 @@
+#version 440
+
+layout(location = 0) in vec3 position;
+layout(location = 1) in vec2 texcoord;
+
+layout(location = 0) out vec2 v_texcoord;
+
+layout(std140, binding = 0) uniform buf {
+    mat4 vertexTransform;
+    mat3 textureTransform;
+    float opacity;
+    int textureSwizzle;
+};
+
+void main()
+{
+    v_texcoord = (textureTransform * vec3(texcoord, 1.0)).xy;
+    gl_Position = vertexTransform * vec4(position, 1.0);
+}