1 files changed, 21 insertions, 0 deletions
diff --git a/source/blender/draw/engines/workbench/shaders/workbench_shadow_vert.glsl b/source/blender/draw/engines/workbench/shaders/workbench_shadow_vert.glsl
new file mode 100644
index 00000000000..50a721f948f
--- /dev/null
+++ b/source/blender/draw/engines/workbench/shaders/workbench_shadow_vert.glsl
@@ -0,0 +1,21 @@
+#define INFINITE 1000.0
+
+uniform mat4 ModelViewProjectionMatrix;
+
+uniform vec3 lightDirection = vec3(0.57, 0.57, -0.57);
+uniform float lightDistance = 1e4;
+
+in vec3 pos;
+
+out VertexData {
+	vec3 pos;           /* local position */
+	vec4 frontPosition; /* final ndc position */
+	vec4 backPosition;
+} vData;
+
+void main()
+{
+	vData.pos = pos;
+	vData.frontPosition = ModelViewProjectionMatrix * vec4(pos, 1.0);
+	vData.backPosition  = ModelViewProjectionMatrix * vec4(pos + lightDirection * lightDistance, 1.0);
+}