Variable: gpuAnimation

const gpuAnimation: object

Defined in: modules/engine/gpu-animation/gpu-animation.ts:228

Portable baked clip sampling and independent per-instance morph deformation.

Type Declaration

bindingLayout

readonly bindingLayout: readonly [{ group: 0; name: "gpuAnimationFrames"; visibility: 1; }, { group: 0; name: "gpuMorphTargets"; visibility: 1; }, { group: 0; name: "gpuMorphWeights"; visibility: 1; }]

bindings

readonly bindings: GPUAnimationProps

fs

readonly fs: "" = ''

name

readonly name: "gpuAnimation" = 'gpuAnimation'

props

readonly props: GPUAnimationProps

source

source: "\n#ifdef HAS_GPU_CROWD_ANIMATION\n@group(0) @binding(auto) var<storage, read> gpuAnimationFrames: array<vec4f>;\n\nfn readGPUAnimationFrame(frame: u32, offset: u32, frameStride: u32) -> vec4f {\n return gpuAnimationFrames[frame * frameStride + offset];\n}\n\nfn sampleGPUAnimationFrame(\n frames: vec4f,\n blend: vec4f,\n offset: u32,\n frameStride: u32\n) -> vec4f {\n let first = mix(\n readGPUAnimationFrame(u32(frames.x), offset, frameStride),\n readGPUAnimationFrame(u32(frames.y), offset, frameStride),\n frames.z\n );\n if (blend.w <= 0.0) {\n return first;\n }\n let second = mix(\n readGPUAnimationFrame(u32(blend.x), offset, frameStride),\n readGPUAnimationFrame(u32(blend.y), offset, frameStride),\n blend.z\n );\n return mix(first, second, blend.w);\n}\n\nfn sampleGPUAnimationMatrix(\n frames: vec4f,\n blend: vec4f,\n firstColumn: u32,\n frameStride: u32\n) -> mat4x4f {\n return mat4x4f(\n sampleGPUAnimationFrame(frames, blend, firstColumn, frameStride),\n sampleGPUAnimationFrame(frames, blend, firstColumn + 1u, frameStride),\n sampleGPUAnimationFrame(frames, blend, firstColumn + 2u, frameStride),\n sampleGPUAnimationFrame(frames, blend, firstColumn + 3u, frameStride)\n );\n}\n\nfn getGPUAnimatedSkinMatrix(\n weights: vec4f,\n joints: vec4u,\n frames: vec4f,\n blend: vec4f,\n frameStride: u32\n) -> mat4x4f {\n return weights.x * sampleGPUAnimationMatrix(frames, blend, 4u + joints.x * 4u, frameStride)\n + weights.y * sampleGPUAnimationMatrix(frames, blend, 4u + joints.y * 4u, frameStride)\n + weights.z * sampleGPUAnimationMatrix(frames, blend, 4u + joints.z * 4u, frameStride)\n + weights.w * sampleGPUAnimationMatrix(frames, blend, 4u + joints.w * 4u, frameStride);\n}\n#endif\n\n#ifdef HAS_INSTANCED_MORPH\n@group(0) @binding(auto) var<storage, read> gpuMorphTargets: array<vec4f>;\n\n#ifndef HAS_GPU_CROWD_ANIMATION\n@group(0) @binding(auto) var<storage, read> gpuMorphWeights: array<vec4f>;\n#endif\n\nfn getGPUCrowdMorphWeight(\n instanceIndex: u32,\n targetIndex: u32,\n targetCount: u32,\n jointsPerInstance: u32,\n frames: vec4f,\n blend: vec4f,\n frameStride: u32\n) -> f32 {\n#ifdef HAS_GPU_CROWD_ANIMATION\n let offset = 4u + jointsPerInstance * 4u + targetIndex;\n return sampleGPUAnimationFrame(frames, blend, offset, frameStride).x;\n#else\n let packedCount = (targetCount + 3u) / 4u;\n let packedWeights = gpuMorphWeights[instanceIndex * packedCount + targetIndex / 4u];\n return packedWeights[targetIndex % 4u];\n#endif\n}\n\nfn getGPUCrowdMorphDelta(\n instanceIndex: u32,\n vertexIndex: u32,\n attributeIndex: u32,\n vertexCount: u32,\n targetCount: u32,\n jointsPerInstance: u32,\n frames: vec4f,\n blend: vec4f,\n frameStride: u32\n) -> vec3f {\n var result = vec3f(0.0);\n for (var targetIndex = 0u; targetIndex < targetCount; targetIndex++) {\n let weight = getGPUCrowdMorphWeight(\n instanceIndex,\n targetIndex,\n targetCount,\n jointsPerInstance,\n frames,\n blend,\n frameStride\n );\n let offset = (targetIndex * 3u + attributeIndex) * vertexCount + vertexIndex;\n result += gpuMorphTargets[offset].xyz * weight;\n }\n return result;\n}\n#endif\n"

uniforms

readonly uniforms: object = {}

vs

vs: "\n#ifdef HAS_GPU_CROWD_ANIMATION\nuniform highp sampler2D gpuAnimationFrames;\n\nvec4 sampleGPUAnimationFrame(vec4 frames, vec4 blend, int offset) {\n vec4 first = mix(\n texelFetch(gpuAnimationFrames, ivec2(offset, int(frames.x)), 0),\n texelFetch(gpuAnimationFrames, ivec2(offset, int(frames.y)), 0),\n frames.z\n );\n if (blend.w <= 0.0) {\n return first;\n }\n vec4 second = mix(\n texelFetch(gpuAnimationFrames, ivec2(offset, int(blend.x)), 0),\n texelFetch(gpuAnimationFrames, ivec2(offset, int(blend.y)), 0),\n blend.z\n );\n return mix(first, second, blend.w);\n}\n\nmat4 sampleGPUAnimationMatrix(vec4 frames, vec4 blend, int firstColumn) {\n return mat4(\n sampleGPUAnimationFrame(frames, blend, firstColumn),\n sampleGPUAnimationFrame(frames, blend, firstColumn + 1),\n sampleGPUAnimationFrame(frames, blend, firstColumn + 2),\n sampleGPUAnimationFrame(frames, blend, firstColumn + 3)\n );\n}\n\nmat4 getGPUAnimatedSkinMatrix(vec4 weights, uvec4 joints, vec4 frames, vec4 blend) {\n return weights.x * sampleGPUAnimationMatrix(frames, blend, 4 + int(joints.x) * 4)\n + weights.y * sampleGPUAnimationMatrix(frames, blend, 4 + int(joints.y) * 4)\n + weights.z * sampleGPUAnimationMatrix(frames, blend, 4 + int(joints.z) * 4)\n + weights.w * sampleGPUAnimationMatrix(frames, blend, 4 + int(joints.w) * 4);\n}\n#endif\n\n#ifdef HAS_INSTANCED_MORPH\nuniform highp sampler2D gpuMorphTargets;\n\n#ifndef HAS_GPU_CROWD_ANIMATION\nuniform highp sampler2D gpuMorphWeights;\n#endif\n\nfloat getGPUCrowdMorphWeight(\n uint instanceIndex,\n uint targetIndex,\n uint jointsPerInstance,\n vec4 frames,\n vec4 blend\n) {\n#ifdef HAS_GPU_CROWD_ANIMATION\n int offset = 4 + int(jointsPerInstance) * 4 + int(targetIndex);\n return sampleGPUAnimationFrame(frames, blend, offset).x;\n#else\n vec4 packedWeights = texelFetch(\n gpuMorphWeights,\n ivec2(int(targetIndex / 4u), int(instanceIndex)),\n 0\n );\n return packedWeights[int(targetIndex % 4u)];\n#endif\n}\n\nvec3 getGPUCrowdMorphDelta(\n uint instanceIndex,\n uint vertexIndex,\n uint attributeIndex,\n uint targetCount,\n uint jointsPerInstance,\n vec4 frames,\n vec4 blend\n) {\n vec3 result = vec3(0.0);\n for (uint targetIndex = 0u; targetIndex < targetCount; targetIndex++) {\n float weight = getGPUCrowdMorphWeight(\n instanceIndex,\n targetIndex,\n jointsPerInstance,\n frames,\n blend\n );\n result += texelFetch(\n gpuMorphTargets,\n ivec2(int(vertexIndex), int(targetIndex * 3u + attributeIndex)),\n 0\n ).xyz * weight;\n }\n return result;\n}\n#endif\n"

getUniforms()

readonly getUniforms(props?): GPUAnimationProps

Parameters

props?

GPUAnimationProps = {}

Returns

GPUAnimationProps