OGLSkinnedSurfaceShader.kl

Types

OGLSkinnedSurfaceShader (object)

バージョン 1.12.0 で追加.

The OGLSkinnedSurfaceShader inherits the OGLSurfaceShader. It extends the OGLSurfaceShader for shading skinned geometries. The Skinned geometries should have a SkinningAttribute attribute applied containing the vertex ids and skin weights.

The SkinningAttribute attribute is converted to a packed vec4 struct by the InlineDrawing system. Each element in the vec4 packs an index and weight, enabling up to 4 joints per vertex to be used in the deformation.

注釈

The FbxCharacter loads skinning data from Fbx files. See the FbxCharacter.kl file for examples of generating

注釈

For arbitrary number of joints to be used per vertex, use CPU based skinning. And example of this can be found in the Character.

参考

Character, FbxCharacter, SkinningAttribute

Uniforms

Name Type Description Default
u_light0Position Vec3 Position of the first light Position of the camera
u_light0Color Color Color of the first light Color(1.0, 1.0, 1.0)
u_ambientColor Color Ambient color component Color(0.05, 0.05, 0.05)
u_diffuseColor Color Diffuse color component Color(0.0, 1.0, 0.0)
u_specularColor Color Specular color component Color(0.2, 0.2, 0.2)
u_specularFactor Color Specular distribution factor 16.0
u_normalIsTangent Integer Flag defining normal type 0
u_doubleSided Integer Flag defining backface shading model 0

Attributes

Name Type Description
positions Vec3 Geometry positions
normals Vec3 Geometry normals
skinningData Vec4 Skinning Data 
/*
** Example: SkinningShader :nooutput: InlineDrawing drawing = OGLInlineDrawing_GetInstance(); DrawingHandle handle(); FbxCharacter fbxCharacter(fbxFile);
*/

InlineShader skinnedSurfaceShader = null;
if(!drawing.hasShader('skinnedSurfaceShader')){
  skinnedSurfaceShader = OGLSkinnedSurfaceShader('skinnedSurfaceShader');
  drawing.registerShader(skinnedSurfaceShader);
}
else
  skinnedSurfaceShader = drawing.getShader('skinnedSurfaceShader');

InlineMaterial characterMaterial = skinnedSurfaceShader.getOrCreateMaterial(fbxCharacter.getName() + "_Material");
characterMaterial.setUniform(InlineUniform('u_diffuseColor', Color(1.0, 0.0, 0.0)));

InlineMatrixArrayTexture poseTexture(fbxCharacter.getName() + "_PoseTexture", fbxCharacter.getSkinningMatrices());
for(Integer geom=0; geom<fbxCharacter.getNumGeometries(); geom++){
  InlineMeshShape skinShape(fbxCharacter.getName() + "_" + geom, fbxCharacter.getGeometry(geom));
  InlineInstance skinInstance = SimpleInlineInstance(fbxCharacter.getName() + "_" + geom, handle.rootTransform, skinShape, characterMaterial);
  skinInstance.setInstanceUniform(InlineUniform('skinningMatrices', poseTexture));
  skinInstance.setInstanceUniform(InlineUniform('bindShapeTransform', fbxCharacter.getBindShapeTransform(geom)));
}

// Update the pose of the character before rendering.
ClipPose pose = characters[index].getPose();
pose.evaluate(time);
poseTexture.update(characters[index].getSkinningMatrices());