Box-projected decal from the depth buffer
In your harnessGodot shaderMIT
Project a decal onto whatever geometry lies inside a box: the box's pixels rebuild the scene position from depth, move it into the box's local space, discard outside the box, fade on steep surfaces, and draw a procedural emblem or an assigned image.

What it takes and gives
- Shader type
- spatial
- Render modes
- unshaded, cull_front, depth_test_disabled, depth_draw_never, shadows_disabled
- Parameters
- depth_texture (sampler2D), decal_texture (sampler2D), decal_color (vec4 = 0.95, 0.75, 0.1, 1), accent_color (vec4 = 0.08, 0.08, 0.08, 1), opacity (float = 0.9), angle_fade (float = 0.4), edge_fade (float = 0.05), stripe_count (int = 10) and 1 more
- Use it on
- A unit BoxMesh node scaled and rotated to the decal volume; its local Y is the projection axis., Optional: a decal image for
decal_texture. - Result
- A yellow and black hazard disc painted across the floor and wrapping onto the crate inside the box.
- Renderers
- compatibility: compiled and rendered, forward plus: not verified, mobile: not verified
- Placement
- res://baltor/godot_shaders/depth_decal_projector/
Limits. Projects onto every opaque surface in the box, including moving characters; filter with layers if needed. Transparent objects are not in the depth buffer. The decal does not receive lighting (unshaded). Reconstructed normals are flat per pixel quad and can flicker at depth discontinuities.
Details
- Kind
- Godot shader
- Engine
- Godot 4.3 or later
- Files
- 11 files, 55.6 KB
- Licence
- MIT
- Declared effects
- reads files, runs commands
- Checked with
- Godot 4.7.2, opengl3 compatibility (Mesa llvmpipe, Xvfb)
- Checks
- contract static, engine run, engine log clean, shader in scene, capture written, render not uniform, shader changes pixels
- Techniques
- Deferred (screen-space) decal by depth reconstruction into box space, Normal from derivatives of the reconstructed position, Procedural emblem
- Tags
- godot shader, spatial, decal, projection, depth buffer, deferred decal, graffiti
- Identity
library.supply.creative_originals.782faf0d8ed89d260b07949c.31b45df5b6bc0fdf- Version
31b45df5b6bc0fdf620e69a557bc69632e0e906fcb30f1e46ea843f54d219c2f
The version is the SHA-256 of the item your harness downloads; every file in it names its own checksum.
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