1 files changed, 16 insertions, 0 deletions
diff --git a/source/blender/compositor/realtime_compositor/shaders/compositor_projector_lens_distortion.glsl b/source/blender/compositor/realtime_compositor/shaders/compositor_projector_lens_distortion.glsl
new file mode 100644
index 00000000000..ab44dac93e6
--- /dev/null
+++ b/source/blender/compositor/realtime_compositor/shaders/compositor_projector_lens_distortion.glsl
@@ -0,0 +1,16 @@
+#pragma BLENDER_REQUIRE(gpu_shader_compositor_texture_utilities.glsl)
+
+void main()
+{
+  ivec2 texel = ivec2(gl_GlobalInvocationID.xy);
+
+  /* Get the normalized coordinates of the pixel centers. */
+  vec2 normalized_texel = (vec2(texel) + vec2(0.5)) / vec2(texture_size(input_tx));
+
+  /* Sample the red and blue channels shifted by the dispersion amount. */
+  const float red = texture(input_tx, normalized_texel + vec2(dispersion, 0.0)).r;
+  const float green = texture_load(input_tx, texel).g;
+  const float blue = texture(input_tx, normalized_texel - vec2(dispersion, 0.0)).b;
+
+  imageStore(output_img, texel, vec4(red, green, blue, 1.0));
+}