Animated film grain with luminance response
In your harnessGodot shaderMIT
Add moving film grain whose strength follows image brightness (strongest in midtones), with adjustable grain size, colour or monochrome grain, and a gentle exposure flicker.
What it takes and gives
- Shader type
- spatial
- Render modes
- unshaded, cull_disabled, depth_test_disabled, depth_draw_never, skip_vertex_transform, fog_disabled
- Parameters
- screen_texture (sampler2D), amount (float = 0.35), grain_size (float = 1.6), color_grain (float = 0.25), midtone_bias (float = 0.7), frames_per_second (float = 24), flicker (float = 0.03)
- Use it on
- A MeshInstance3D with a 2 x 2 QuadMesh,
material.tresas its material override and a large extra cull margin, as indemo.tscn. - Result
- The scene with fine flickering grain most visible in its midtones.
- Renderers
- compatibility: compiled and rendered, forward plus: not verified, mobile: not verified
- Placement
- res://baltor/godot_shaders/post_film_grain/
Limits. Hashed white noise, not a scanned film stock: grain has no clumping or shape. Visible grain changes with resolution because it is sized in screen pixels. The pass reads Godot's screen texture after opaque geometry, so transparent objects drawn after it are not processed and its order among other transparent passes is not controlled.
Details
- Kind
- Godot shader
- Engine
- Godot 4.3 or later
- Files
- 11 files, 139.8 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
- Hashed per-cell noise updated at a fixed frame rate, Luminance-dependent grain response, MurmurHash3 32-bit finalizer over prime-combined lattice coordinates as a hash
- Tags
- godot shader, spatial, post-process, film grain, noise, cinematic, analog, full-screen
- Identity
library.supply.creative_originals.89f3d6733fe74a0377965e22.bd7ebed34971878d- Version
bd7ebed34971878d179aeeef3456fc2035903d8fbbfd68594ce4bbdb57231403
The version is the SHA-256 of the item your harness downloads; every file in it names its own checksum.
Related files
Shaped vignette with colour and focus pointIn your harness
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