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melo

melo is mesh loader for OBJ, glTF2 and PLY, also includes a Cinder based mesh viewer on Windows and macOS.

Features

TODO

  • Implement skinning animation
  • Implement morph animation
  • Support Linux / Android / iOS
  • Support Sketchfab download API
  • FrameGraph

To build samples/MeshViewer, you need:

The folder structure should appear like this:

Cinder/
    blocks/
        Cinder-VNM/
        melo/
            samples/MeshViewer/vc2015/MeshViewer.sln
            assets/
                Cube/
                    Cube.gltf
                cerberus/
                    Cerberus.obj
                Awesome-gltf-files/
                    scene.gltf
                    scene.bin
                Symbolic-links-are-also-supported
    include/

PBR shader macros

vertex inputs

  • HAS_NORMALS

  • HAS_TANGENTS

  • HAS_VERTEX_COLOR_VEC4

  • HAS_UV_SET1

  • HAS_UV_SET2

  • USE_MORPHING

  • USE_SKINNING

  • HAS_TARGET_POSITION0

  • HAS_TARGET_POSITION1

  • HAS_TARGET_POSITION2

  • HAS_TARGET_POSITION3

  • HAS_TARGET_POSITION4

  • HAS_TARGET_POSITION5

  • HAS_TARGET_POSITION6

  • HAS_TARGET_POSITION7

  • HAS_TARGET_NORMAL0

  • HAS_TARGET_NORMAL1

  • HAS_TARGET_NORMAL2

  • HAS_TARGET_NORMAL3

  • HAS_TARGET_NORMAL4

  • HAS_TARGET_TANGENT0

  • HAS_TARGET_TANGENT1

  • HAS_TARGET_TANGENT2

  • HAS_TARGET_TANGENT3

  • HAS_TARGET_TANGENT4

  • HAS_JOINT_SET1

  • HAS_JOINT_SET2

  • HAS_JOINT_SET3

  • HAS_JOINT_SET4

  • HAS_WEIGHT_SET1

  • HAS_WEIGHT_SET2

material types

  • MATERIAL_SPECULARGLOSSINESS
  • MATERIAL_METALLICROUGHNESS
  • MATERIAL_UNLIT
  • MATERIAL_ANISOTROPY
  • MATERIAL_SUBSURFACE
  • MATERIAL_THIN_FILM
  • MATERIAL_THICKNESS
  • MATERIAL_ABSORPTION
  • MATERIAL_IOR
  • MATERIAL_TRANSMISSION

texture maps

  • HAS_BASE_COLOR_MAP
  • HAS_NORMAL_MAP
  • HAS_METALLIC_ROUGHNESS_MAP
  • HAS_OCCLUSION_MAP
  • HAS_EMISSIVE_MAP
  • HAS_SUBSURFACE_COLOR_MAP
  • HAS_SUBSURFACE_THICKNESS_MAP
  • HAS_ANISOTROPY_MAP
  • HAS_ANISOTROPY_DIRECTION_MAP
  • HAS_SPECULAR_GLOSSINESS_MAP
  • HAS_METALLICROUGHNESS_SPECULAROVERRIDE_MAP
  • HAS_SHEEN_COLOR_INTENSITY_MAP
  • HAS_THIN_FILM_MAP
  • HAS_THIN_FILM_THICKNESS_MAP
  • HAS_THICKNESS_MAP
  • HAS_CLEARCOAT_TEXTURE_MAP
  • HAS_CLEARCOAT_ROUGHNESS_MAP
  • HAS_CLEARCOAT_NORMAL_MAP

alpha mode

  • ALPHAMODE_OPAQUE
  • ALPHAMODE_MASK

use misc

  • USE_IBL
  • USE_PUNCTUAL

debug

  • DEBUG_BASECOLOR
  • DEBUG_ALPHA
  • DEBUG_NORMAL
  • DEBUG_TANGENT
  • DEBUG_METALLIC
  • DEBUG_ROUGHNESS
  • DEBUG_BITANGENT
  • DEBUG_OCCLUSION
  • DEBUG_F0
  • DEBUG_FEMISSIVE
  • DEBUG_FSPECULAR
  • DEBUG_FDIFFUSE
  • DEBUG_FSHEEN
  • DEBUG_FCLEARCOAT
  • DEBUG_FSUBSURFACE
  • DEBUG_THICKNESS
  • DEBUG_FTRANSMISSION