class InstanceIndirectBase

package h3d.shader

extends Shader

import h3d.shader.InstanceIndirect

extended by InstanceIndirect, SubPartInstanceIndirect

@:directlyUsed@:src({ @global var camera:{ var position : Vec3}; @const var ENABLE_COUNT_BUFFER:Bool; @param var countBuffer:RWBuffer<Int>; @param var commandBuffer:RWBuffer<Int>; @param var instanceData:StoragePartialBuffer<{ var modelView : Mat4}>; @param var instanceCount:Int; @const var MAX_MATERIAL_COUNT:Int = 16; @param var matInfos:Buffer<Vec4,MAX_MATERIAL_COUNT>; @const var ENABLE_CULLING:Bool; @param var frustum:Buffer<Vec4,6>; @const var ENABLE_LOD:Bool; @const var ENABLE_DISTANCE_CLIPPING:Bool; @param var maxDistance:Float = -1; var matID:Int = 0; var modelView:Mat4; var invocID:Int; function __init__() { { setLayout(64, 1, 1); invocID = computeVar.workGroup.x * 64 + computeVar.localInvocationIndex; }; modelView = instanceData[invocID].modelView; }; function emitInstance(instanceID:Int, indexCount:Int, instanceCount:Int, startIndex:Int, startVertex:Int, baseInstance:Int) { var instancePos = instanceID * 5; commandBuffer[instancePos + 0] = indexCount; commandBuffer[instancePos + 1] = instanceCount; commandBuffer[instancePos + 2] = startIndex; commandBuffer[instancePos + 3] = startVertex; commandBuffer[instancePos + 4] = baseInstance; }; function frustumCulling(pos:Vec3, radius:Float):Bool { var culled = false; if (ENABLE_CULLING) { @unroll for (i in 0 ... 6) { var plane = frustum[i]; culled = culled || plane.x * pos.x + plane.y * pos.y + plane.z * pos.z - plane.w < -radius; }; }; return culled; }; function distanceClipping(distToCam:Float, radius:Float):Bool { return (ENABLE_DISTANCE_CLIPPING) ? distToCam > maxDistance + radius : false; }; function screenRatioCulling(screenRatio:Float):Bool { var minScreenRatioCulling = getMinScreenRatio(); return screenRatio < minScreenRatioCulling; }; function getLodCount():Int { return 0; }; function getLodScreenRatio(lod:Int):Float { return matInfos[lod + matID].z; }; function getMinScreenRatio():Float { return ENABLE_LOD ? matInfos[0].w : 0.0; }; function computeScreenRatio(distToCam:Float, radius:Float):Float { var screenRatio = radius / distToCam; return screenRatio * screenRatio; }; function selectLod(screenRatio:Float, lodCount:Int):Int { var lod:Int = 0; if (ENABLE_LOD) { for (i in 0 ... lodCount) { var minScreenRatio = getLodScreenRatio(i); if (screenRatio > minScreenRatio) break; lod++; }; lod = clamp(lod, 0, int(lodCount) - 1); }; return lod; }; })@:build(hxsl.Macros.buildShader())@:autoBuild(hxsl.Macros.buildShader())