1 files changed, 17 insertions, 0 deletions
diff --git a/source/blender/gpu/shaders/material/gpu_shader_material_tex_checker.glsl b/source/blender/gpu/shaders/material/gpu_shader_material_tex_checker.glsl
new file mode 100644
index 00000000000..f534f3bddf3
--- /dev/null
+++ b/source/blender/gpu/shaders/material/gpu_shader_material_tex_checker.glsl
@@ -0,0 +1,17 @@
+void node_tex_checker(
+    vec3 co, vec4 color1, vec4 color2, float scale, out vec4 color, out float fac)
+{
+  vec3 p = co * scale;
+
+  /* Prevent precision issues on unit coordinates. */
+  p = (p + 0.000001) * 0.999999;
+
+  int xi = int(abs(floor(p.x)));
+  int yi = int(abs(floor(p.y)));
+  int zi = int(abs(floor(p.z)));
+
+  bool check = ((mod(xi, 2) == mod(yi, 2)) == bool(mod(zi, 2)));
+
+  color = check ? color1 : color2;
+  fac = check ? 1.0 : 0.0;
+}