我使用Away3D 4.1(2500立方体)创建了一个简单的测试,但性能比我预期的要低很多 - 只有10 FPS。
我假设我犯了一个noob错误(作为菜鸟和所有人)所以这里是相关的代码片段:
照明:
var light1:DirectionalLight = new DirectionalLight();
light1.position = new Vector3D(400, 300, -200);
light1.lookAt(new Vector3D());
light1.color = 0xFFFFFF;
light1.ambient = 0.25;
lightPicker = new StaticLightPicker([light1]);
创建多维数据集:
var material:ColorMaterial = new ColorMaterial(0x999999);
material.lightPicker = lightPicker;
material.specular = 0;
var mesh:Mesh = new Mesh(new CubeGeometry(50, 50, 50), material);
for (var i:uint = 0; i < 50; i++)
{
for (var j:uint = 0; j < 50; j++)
{
var cube:Mesh = Mesh(mesh.clone());
cube.x = 100*(i-25);
cube.y = 25;
cube.z = 100*(j-25);
scene.addChild(cube);
}
}
相机:
camera = new Camera3D();
camera.position = new Vector3D(0, 1000, -5000);
camera.lookAt(new Vector3D(0, 0, 0));
camera.lens.far = 10000;
Scout中的Stage3D输出显示每个drawTriangles调用之间有很多调用,我的基本理解告诉我drawTriangle调用应该是'batched'。
我知道其他一些框架都有批处理方法,但我找不到任何与Away3D相关的内容。
提前感谢您的帮助。
答案 0 :(得分:3)
看起来像Merge(感谢Varnius发现它)是推荐使用以前版本的方法,但它在4.1中不起作用(见away3d forum thread)。
然而,用户kurono在论坛中发布了一个有效的解决方案(至少对于我的场景),所以我在这里重现它以防其他人有同样的问题:
var material:ColorMaterial = new ColorMaterial(0x999999);
material.lightPicker = lightPicker;
material.specular = 0;
var mesh:Mesh = new Mesh(new CubeGeometry(50, 50, 50));
var meshes:Vector.<Mesh> = new Vector.<Mesh>();
for (var i:uint = 0; i < 50; i++)
{
for (var j:uint = 0; j < 50; j++)
{
var cube:Mesh = Mesh(mesh.clone());
cube.x = 100*(i-25);
cube.y = 25;
cube.z = 100*(j-25);
meshes.push(cube);
}
}
var bigMesh:Mesh = doMerge(meshes, material);
scene.add(bigMesh);
魔术在doMerge()方法中:
function doMerge(meshes:Vector.<Mesh>, material:MaterialBase):Mesh
{
var isub:ISubGeometry;
var rawVertsAll:Vector.<Number> = new Vector.<Number>();
var rawIndicesAll:Vector.<uint> = new Vector.<uint>();
var rawUVsAll:Vector.<Number> = new Vector.<Number>();
var rawNormalsAll:Vector.<Number> = new Vector.<Number>();
var rawTangentsAll:Vector.<Number> = new Vector.<Number>();
var offset:uint = 0;
var verts:Vector.<Number>;
var normals:Vector.<Number>;
var tangents:Vector.<Number>;
var uvs:Vector.<Number>;
var indices:Vector.<uint>;
var i:uint;
var j:uint;
var k:uint;
for (k = 0; k < meshes.length; k++)
{
var m:Mesh = meshes[k];
isub = m.geometry.subGeometries[0].cloneWithSeperateBuffers();
isub.applyTransformation(m.transform.clone());
verts = new Vector.<Number>();
normals = new Vector.<Number>();
tangents = new Vector.<Number>();
uvs = new Vector.<Number>();
indices = isub.indexData;
for (i = 0; i < isub.numVertices; i++)
{
verts.push(isub.vertexData[i * isub.vertexStride + isub.vertexOffset]);
verts.push(isub.vertexData[i * isub.vertexStride + isub.vertexOffset + 1]);
verts.push(isub.vertexData[i * isub.vertexStride + isub.vertexOffset + 2]);
normals.push(isub.vertexNormalData[i * isub.vertexNormalStride + isub.vertexNormalOffset]);
normals.push(isub.vertexNormalData[i * isub.vertexNormalStride + isub.vertexNormalOffset + 1]);
normals.push(isub.vertexNormalData[i * isub.vertexNormalStride + isub.vertexNormalOffset + 2]);
tangents.push(isub.vertexTangentData[i * isub.vertexTangentStride + isub.vertexTangentOffset]);
tangents.push(isub.vertexTangentData[i * isub.vertexTangentStride + isub.vertexTangentOffset + 1]);
tangents.push(isub.vertexTangentData[i * isub.vertexTangentStride + isub.vertexTangentOffset + 2]);
uvs.push(isub.UVData[i * isub.UVStride + isub.UVOffset]);
uvs.push(isub.UVData[i * isub.UVStride + isub.UVOffset + 1]);
}
for (j = 0; j < indices.length; j++)
{
indices[j] += offset;
}
offset += isub.numVertices;
rawVertsAll = rawVertsAll.concat(verts);
rawNormalsAll = rawNormalsAll.concat(normals);
rawTangentsAll = rawTangentsAll.concat(tangents);
rawUVsAll = rawUVsAll.concat(uvs);
rawIndicesAll = rawIndicesAll.concat(indices);
}
var geometry:Geometry = new Geometry();
var subGeometry:SubGeometry = new SubGeometry();
subGeometry.updateVertexData(rawVertsAll);
subGeometry.updateIndexData(rawIndicesAll);
subGeometry.updateUVData(rawUVsAll);
subGeometry.updateVertexNormalData(rawNormalsAll);
subGeometry.updateVertexTangentData(rawTangentsAll);
geometry.subGeometries.push(subGeometry);
return new Mesh(geometry, material);
}
瞧! 10fps变为60fps
答案 1 :(得分:2)
是的,您应该批量绘制调用。我对Away3D没有多少经验,但在快速查看其API参考后,似乎away3d.tools.commands.Merge应该可以帮助您将所有这些立方体合并为一个大型批量网格。
答案 2 :(得分:2)
你在调试播放器或发行版中获得10 fps吗?
我运行了你的代码并在调试播放器中获得了20 fps但在发布版本中获得了50+ fps。
我尝试合并,但没有看到任何改进。另外,如果要访问单个多维数据集,合并将使这非常复杂:)