1 files changed, 27 insertions, 0 deletions
diff --git a/source/blender/gpu/shaders/gpu_shader_instance_objectspace_variying_color_vert.glsl b/source/blender/gpu/shaders/gpu_shader_instance_objectspace_variying_color_vert.glsl
new file mode 100644
index 00000000000..9876717b297
--- /dev/null
+++ b/source/blender/gpu/shaders/gpu_shader_instance_objectspace_variying_color_vert.glsl
@@ -0,0 +1,27 @@
+
+uniform mat4 ViewMatrix;
+uniform mat4 ViewProjectionMatrix;
+
+/* ---- Instanciated Attribs ---- */
+in vec3 pos;
+in vec3 nor;
+
+/* ---- Per instance Attribs ---- */
+in mat4 InstanceModelMatrix;
+in vec4 color;
+
+out vec3 normal;
+flat out vec4 finalColor;
+
+void main()
+{
+	mat4 ModelViewProjectionMatrix = ViewProjectionMatrix * InstanceModelMatrix;
+	/* This is slow and run per vertex, but it's still faster than
+	 * doing it per instance on CPU and sending it on via instance attrib */
+	mat3 NormalMatrix = transpose(inverse(mat3(ViewMatrix * InstanceModelMatrix)));
+
+	gl_Position = ModelViewProjectionMatrix * vec4(pos, 1.0);
+	normal = NormalMatrix * nor;
+
+	finalColor = color;
+}