pierodn / gdevice Goto Github PK

• GitHub
• Patreon
• ko-fi.com
• Kickstarter
• IDA crowdfunding
• YouTube (tutorials)
• Medium

• Static: use Z to fade vertically
• Volumetric: use plane intersections
• Wind-surface interaction (sand)

• Precompute before Fragment
• Precompute ambient dome?
• Avoid lfShadow in dome?

• Use asphalt detail at LOD0.
• Tweak smoothsteps: outcrops
• FIX get the detail color in.

• painting landscapes
• Shadows and horizon like in here

• Presentation doc
  • Donation buttons
    • Wise card + PayPal

Things that can be tried out:

• FIX triplanar with screen derivatives ?
• normal mapping for a triplanar shader
• Different methods (UDK, Unity..)
  • GpuGems3 method
• magic morphing cube
• Triplanar Mapping Test
• small planet
• Iq's biplanar
• method based on barycentric
• Fix normal interpolation when angle>90
• Display where this happens (?)
• Fix at generation level (?)

• Video teasers
• Write in game blogs

• Erosion
  • Curl on steep: video
  • Gabor on steep
  • Dump
  • Rock
  • Flow map
• Artifacts
• Paths

More things to try out:

• Hybrid<Max(triangular<Cones>)>
• Octave Derivative: dt = F(t1-t0)
• dt.z → clip spikes (by height)
• dt.xy → extra ridges (?)
• Quantization
• Triangular cones for extra ridges

• FIX normal !!
• Vertical tessellation
• Improve extrusion
• Hard verticality (inject 2nd point)

• Static: use Z to fade vertically
• Volumetric: use plane intersections
• Wind-surface interaction (sand)

• Check GLSL types against this
• Modularity: demo.exe + gdevice.dll
• Implement ECS in Node
• Generate textures: example
• Remove asset/textures/terrain
• FIX make shader error system robust
• FIX compile error with Quadro T2000
• FIX compile error with RTX3000
• FIX shaders for Intel (?)

• FIX normal !!
  • Move dotN0L from FS to TES
  • FIX scale !!
  • FIX dH in FS (bumps)
• Antialiased tessellation
• Vertical tessellation
• Improve extrusion
• Hard verticality (inject 2nd point)
• Precompute more in TES
  • dotN0L (shadows)
  • distance

• Implement ECS in Node
• demo.exe + gdevice.dll
• Fix compile error with Quadro T2000
• Fix compile error with RTX3000

• F1: Wireframe+Tiles
• F2: Color
  • vertex color
  • texture generated
  • occlusion map
  • normal map
• F3-F4: Added detail
  • Tessellate
  • Bumps+Micro
• F5-F9: Light components
  • Diffuse
  • Specular
  • Backlighting
  • Sky
  • Fresnel
• F10-F12: Volumetrics
  • Light scattering
  • Shadow
  • Clouds
• P: PBR

• painting landscapes
• Shadows and horizon like in here

• Documentation (GitHub Wiki)
• Journal (GitHub pages)
• Sub-projects
• Tutorials (GitHub pages + YouTube)

• Erosion
  • Stripe patterns
    • paper
  • Curl on steep: video
  • Gabor on steep
  • Dump
  • Rock
  • Shadow consistency
  • Flow map
• Artifacts
• Paths

• Make rocky chunks in mountains.
• FIX Peaks and sharp edges
  (with 2x2 filter and derivatives?)
• Add larger and smaller outcrops.
• More packed (pow?) and less packed.
• Cobs path on saddle points.
• Improve shadow consistency
• Rocky or pseudo metallic artifacts
• Additional erosion map
  • About converting to angle: atan
  • BinaryTreeSubdiv
  • w = peak factor [0..1]
  • erosion * peak
• Increase tessellation on verticalities
  • Displace like strata
• One master SCALE.

More things to try out:

• Hybrid<Max(triangular<Cones>)>
• Octave Derivative: dt = F(t1-t0)
• dt.z → clip spikes (by height)
• dt.xy → extra ridges (?)
• Quantization
• Triangular cones for extra ridges

• FIX clamping discontinuities (those that generate hard shadow seams).
• FIX noise discontinuities (mostly visible on Intel).
• FIX texture discontinuties.

• Use asphalt detail at LOD0.
• Tweak smoothsteps: outcrops
• FIX get the detail color in.

• FIX hard edges in terrain generation
  • mind shadow consistency
• FIX current textures defects (paint)
• FIX tessellated and displaced normal
• FIX tessellated shadow aliasing?
• FIX get the detail color back in
• FIX tile repetition (iq example)
• FIX triplanar bug (with dFdx?)
• FIX tile repetition and triplanar bug?
• FIX tone mapping for sand or snow
• FIX aliasing on polygons edges
• FIX resizable window
• FIX fullscreen ⮂ windowed
• FIX terrain collisions
• FIX precompute away from Fragment
• FIX lighting defect in Fresnel

• Non uniform specular/fresnel
• Procedural gloss

Parameters

• Shader parameters
  • vec4 detailmap
  • vec4[4] colors
    alpha = specularity [-1..1]
• Vertex parameters
  • vec4 mixmap
  • vec4 color
    alpha = specularity [-1..1]

How this is supposed to work

• A material is a set of 4 fixed luma textures and 4 corresponding colors.
• It is set per draw call.
• Every vertex comes with a mixmap that will tell how to mix the 4 textures.
• When [0..1], the dot(mixmap, detailmap) becomes the 5h texture and it gets the vertex color.
• When [-1..0], they mix by height (together with the 5h one).

Acceptance test

• polished stone
• muddy ground
• rusty copper
• icy rock
• sand (with shiny particles)
• snow (with shiny particles)
• Shadertoy material editor

Comparison with PBR

• Specularity is Roughness and includes Metallicity.
• Albedo or diffuse color is just color (and it is F0).