public static void Export(GameObject[] gameObjects, string saveFileName, ExportSettings settings)
{
MeshConverter.ClearCaches();
TextureConverter.ClearCaches();
MaterialConverter.ClearCaches();
ShaderMappingIO.ClearCaches();
GraphBuilderInterface.unity2vsg_BeginExport();
List <PipelineData> storePipelines = new List <PipelineData>();
bool insideLODGroup = false;
bool firstNodeAdded = false;
System.Action <GameObject> processGameObject = null;
processGameObject = (GameObject go) =>
{
// determine the gameObject type
Transform gotrans = go.transform;
bool nodeAdded = false;
// does it have a none identiy local matrix
if (gotrans.localPosition != Vector3.zero || gotrans.localRotation != Quaternion.identity || gotrans.localScale != Vector3.one)
{
if (firstNodeAdded || !settings.zeroRootTransform)
{
// add as a transform
TransformData transformdata = TransformConverter.CreateTransformData(gotrans);
GraphBuilderInterface.unity2vsg_AddTransformNode(transformdata);
nodeAdded = true;
}
}
// do we need to insert a group
if (!nodeAdded)// && gotrans.childCount > 0)
{
//add as a group
GraphBuilderInterface.unity2vsg_AddGroupNode();
nodeAdded = true;
}
firstNodeAdded = true;
bool meshexported = false;
// get the meshrender here so we can check if the LOD exports the the mesh
MeshFilter meshFilter = go.GetComponent <MeshFilter>();
MeshRenderer meshRenderer = go.GetComponent <MeshRenderer>();
// does this node have an LOD group
LODGroup lodgroup = go.GetComponent <LODGroup>();
if (lodgroup != null && !insideLODGroup)
{
// rather than process the children we figure out which renderers are in which children and add them as LOD children
LOD[] lods = lodgroup.GetLODs();
if (lods.Length > 0)
{
// get bounds from first renderer
if (lods[0].renderers.Length > 0)
{
CullData lodCullData = new CullData();
Bounds bounds = new Bounds(lods[0].renderers[0].bounds.center, lods[0].renderers[0].bounds.size);
foreach (Renderer boundsrenderer in lods[0].renderers)
{
if (boundsrenderer != null)
{
bounds.Encapsulate(boundsrenderer.bounds);
}
}
Vector3 center = bounds.center - gotrans.position;
CoordSytemConverter.Convert(ref center);
lodCullData.center = NativeUtils.ToNative(center);
lodCullData.radius = bounds.size.magnitude * 0.5f;
GraphBuilderInterface.unity2vsg_AddLODNode(lodCullData);
insideLODGroup = true;
for (int i = 0; i < lods.Length; i++)
{
// for now just support one renderer and assume it's under a seperate child gameObject
if (lods[i].renderers.Length == 0)
{
continue;
}
LODChildData lodChild = new LODChildData();
lodChild.minimumScreenHeightRatio = lods[i].screenRelativeTransitionHeight;
GraphBuilderInterface.unity2vsg_AddLODChild(lodChild);
foreach (Renderer lodrenderer in lods[i].renderers)
{
if (lodrenderer == meshRenderer)
{
meshexported = true;
ExportMesh(meshFilter.sharedMesh, meshRenderer, gotrans, settings, storePipelines);
}
else if (lodrenderer != null)
{
// now process the renderers gameobject, it'll be added to the group we just created by adding an LOD child
processGameObject(lodrenderer.gameObject);
}
}
GraphBuilderInterface.unity2vsg_EndNode();
}
insideLODGroup = false;
GraphBuilderInterface.unity2vsg_EndNode(); // end the lod node
}
}
}
else
{
// transverse any children
for (int i = 0; i < gotrans.childCount; i++)
{
processGameObject(gotrans.GetChild(i).gameObject);
}
}
// does it have a mesh
if (!meshexported && meshFilter && meshFilter.sharedMesh && meshRenderer)
{
Mesh mesh = meshFilter.sharedMesh;
ExportMesh(mesh, meshRenderer, gotrans, settings, storePipelines);
}
// does this node have a terrain
Terrain terrain = go.GetComponent <Terrain>();
if (terrain != null)
{
ExportTerrainMesh(terrain, settings, storePipelines);
}
// if we added a group or transform step out
if (nodeAdded)
{
GraphBuilderInterface.unity2vsg_EndNode();
}
};
foreach (GameObject go in gameObjects)
{
processGameObject(go);
}
//GraphBuilderInterface.unity2vsg_EndNode(); // step out of convert coord system node
GraphBuilderInterface.unity2vsg_EndExport(saveFileName);
NativeLog.PrintReport();
}
/// <summary>
/// Create a new material data based off of the pass material also adds the new data to the cache
/// </summary>
/// <param name="material"></param>
/// <returns></returns>
public static MaterialInfo CreateMaterialData(Material material, ShaderMapping mapping = null)
{
// fetch the shadermapping for this materials shader
if (mapping == null && material != null)
{
mapping = ShaderMappingIO.ReadFromJsonFile(material.shader);
if (mapping == null) // if we fail to find a mapping try and load the default
{
mapping = ShaderMappingIO.ReadFromJsonFile(ShaderMappingIO.GetPathForShaderMappingFile("Default"));
}
}
MaterialInfo matdata = new MaterialInfo
{
id = material != null?material.GetInstanceID() : 0,
mapping = mapping
};
// process uniforms
UniformMappedData[] uniformDatas = mapping.GetUniformDatasFromMaterial(material);
foreach (UniformMappedData uniData in uniformDatas)
{
VkDescriptorType descriptorType = VkDescriptorType.VK_DESCRIPTOR_TYPE_MAX_ENUM;
uint descriptorCount = 1;
if (uniData.mapping.uniformType == UniformMapping.UniformType.Texture2DUniform)
{
Texture tex = uniData.data as Texture;
if (tex == null)
{
continue;
}
// get imagedata for the texture
ImageData imageData = TextureConverter.GetOrCreateImageData(tex);
// get descriptor for the image data
DescriptorImageData descriptorImage = GetOrCreateDescriptorImageData(imageData, uniData.mapping.vsgBindingIndex);
matdata.imageDescriptors.Add(descriptorImage);
descriptorType = VkDescriptorType.VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER;
}
else if (uniData.mapping.uniformType == UniformMapping.UniformType.Texture2DArrayUniform)
{
Texture2DArray tex = uniData.data as Texture2DArray;
if (tex == null)
{
continue;
}
ImageData[] imageDatas = TextureConverter.GetOrCreateImageData(tex);
DescriptorImageData descriptorImage = GetOrCreateDescriptorImageData(imageDatas, uniData.mapping.vsgBindingIndex);
matdata.imageDescriptors.Add(descriptorImage);
descriptorType = VkDescriptorType.VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER;
descriptorCount = (uint)imageDatas.Length;
}
else if (uniData.mapping.uniformType == UniformMapping.UniformType.FloatUniform)
{
float value = (float)uniData.data;
if (value == float.NaN)
{
continue;
}
// get descriptor for the image data
DescriptorFloatUniformData descriptorFloat = new DescriptorFloatUniformData
{
id = material.GetInstanceID(),
binding = uniData.mapping.vsgBindingIndex,
value = value
};
matdata.floatDescriptors.Add(descriptorFloat);
descriptorType = VkDescriptorType.VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER;
}
else if (uniData.mapping.uniformType == UniformMapping.UniformType.Vec4Uniform || uniData.mapping.uniformType == UniformMapping.UniformType.ColorUniform)
{
Vector4 vector = Vector4.zero;
if (uniData.mapping.uniformType == UniformMapping.UniformType.Vec4Uniform)
{
vector = (Vector4)uniData.data;
}
if (uniData.mapping.uniformType == UniformMapping.UniformType.ColorUniform)
{
Color color = (Color)uniData.data;
vector = new Vector4(color.r, color.g, color.b, color.a);
}
if (vector == null)
{
continue;
}
// get descriptor for the image data
DescriptorVectorUniformData descriptorVector = new DescriptorVectorUniformData
{
id = material.GetInstanceID(),
binding = uniData.mapping.vsgBindingIndex,
value = NativeUtils.ToNative(vector)
};
matdata.vectorDescriptors.Add(descriptorVector);
descriptorType = VkDescriptorType.VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER;
}
if (descriptorType == VkDescriptorType.VK_DESCRIPTOR_TYPE_MAX_ENUM)
{
continue;
}
// add any custom defines related to the texture
if (uniData.mapping.vsgDefines != null && uniData.mapping.vsgDefines.Count > 0)
{
matdata.customDefines.AddRange(uniData.mapping.vsgDefines);
}
// create the descriptor binding to match the descriptor image
VkDescriptorSetLayoutBinding descriptorBinding = new VkDescriptorSetLayoutBinding
{
binding = (uint)uniData.mapping.vsgBindingIndex,
descriptorType = descriptorType,
descriptorCount = descriptorCount,
stageFlags = uniData.mapping.stages,
pImmutableSamplers = System.IntPtr.Zero
};
matdata.descriptorBindings.Add(descriptorBinding);
}
if (material != null)
{
string rendertype = material.GetTag("RenderType", true, "Opaque");
matdata.useAlpha = rendertype.Contains("Transparent") ? 1 : 0;
if (matdata.useAlpha == 1)
{
matdata.customDefines.Add("VSG_BLEND");
}
string lightmode = material.GetTag("LightMode", true, "ForwardBase");
if (lightmode != "Always")
{
matdata.customDefines.Add("VSG_LIGHTING");
}
}
// lastly process shaders now we know the defines etc it will use
string customDefinesStr = string.Join(",", matdata.customDefines.ToArray());
matdata.shaderStages = GetOrCreateShaderStagesInfo(mapping.shaders.ToArray(), customDefinesStr, null);
// add to the cache (double check it doesn't exist already)
if (material != null && !_materialDataCache.ContainsKey(matdata.id))
{
_materialDataCache[matdata.id] = matdata;
}
return(matdata);
}
public static TerrainInfo CreateTerrainInfo(Terrain terrain, GraphBuilder.ExportSettings settings)
{
TerrainInfo terrainInfo = new TerrainInfo();
bool usingCustomMaterial = false;
if (terrain.materialType == Terrain.MaterialType.Custom)
{
// try and load a shader mapping file to match the custom terrain material
terrainInfo.shaderMapping = ShaderMappingIO.ReadFromJsonFile(terrain.materialTemplate.shader);
if (terrainInfo.shaderMapping != null)
{
usingCustomMaterial = true;
}
}
else
{
// load the default terrain shader mapping file
terrainInfo.shaderMapping = ShaderMappingIO.ReadFromJsonFile(ShaderMappingIO.GetPathForShaderMappingFile("DefaultTerrain"));
}
if (terrainInfo.shaderMapping == null)
{
// no mapping loaded, use a default shader so we can at least export and render the terrain mesh
NativeLog.WriteLine("GraphBuilder: Failed to load Terrain Shader Mapping file for terrain '" + terrain.name + "'.");
terrainInfo.shaderMapping = ShaderMappingIO.ReadFromJsonFile(ShaderMappingIO.GetPathForShaderMappingFile("Default"));
usingCustomMaterial = true;
return(null);
}
terrainInfo.shaderDefines.Add("VSG_LIGHTING");
// build mesh
int samplew = terrain.terrainData.heightmapWidth;
int sampleh = terrain.terrainData.heightmapHeight;
int cellw = terrain.terrainData.heightmapWidth - 1;
int cellh = terrain.terrainData.heightmapHeight - 1;
Vector3 size = terrain.terrainData.size;
Vector2 cellsize = new Vector3(size.x / cellw, size.z / cellh);
Vector2 uvcellsize = new Vector2(1.0f / cellw, 1.0f / cellh);
float[,] terrainHeights = terrain.terrainData.GetHeights(0, 0, samplew, sampleh);
int vertcount = samplew * sampleh;
Vector3[] verts = new Vector3[vertcount];
Vector3[] normals = new Vector3[vertcount];
Vector2[] uvs = new Vector2[vertcount];
int[] indicies = new int[(cellw * cellh) * 6];
// vertices and UVs
for (int y = 0; y < samplew; y++)
{
for (int x = 0; x < sampleh; x++)
{
verts[y * samplew + x].Set(x * cellsize.x, terrainHeights[y, x] * size.y, y * cellsize.y);
normals[y * samplew + x] = terrain.terrainData.GetInterpolatedNormal((float)x / (float)samplew, (float)y / (float)sampleh);
uvs[y * samplew + x].Set(x * uvcellsize.x, y * uvcellsize.y);
}
}
CoordSytemConverter.Convert(verts);
CoordSytemConverter.Convert(normals);
// triangles
int index = 0;
for (int y = 0; y < cellw; y++)
{
for (int x = 0; x < cellh; x++)
{
indicies[index++] = (y * samplew) + x;
indicies[index++] = ((y + 1) * samplew) + x;
indicies[index++] = (y * samplew) + x + 1;
indicies[index++] = ((y + 1) * samplew) + x;
indicies[index++] = ((y + 1) * samplew) + x + 1;
indicies[index++] = (y * samplew) + x + 1;
}
}
CoordSytemConverter.FlipTriangleFaces(indicies);
// convert to meshinfo
MeshInfo mesh = null;
if (!MeshConverter.GetMeshInfoFromCache(terrain.GetInstanceID(), out mesh))
{
mesh = new MeshInfo
{
id = terrain.GetInstanceID(),
verticies = NativeUtils.WrapArray(verts),
normals = NativeUtils.WrapArray(normals),
uv0 = NativeUtils.WrapArray(uvs),
triangles = NativeUtils.WrapArray(indicies),
use32BitIndicies = 1
};
MeshConverter.AddMeshInfoToCache(mesh, terrain.GetInstanceID());
}
terrainInfo.terrainMesh = mesh;
terrainInfo.terrainSize = size;
// gather material info
if (!usingCustomMaterial)
{
// use standard terrain layers
TerrainLayer[] layers = terrain.terrainData.terrainLayers;
for (int i = 0; i < layers.Length; i++)
{
ImageData layerData = TextureConverter.GetOrCreateImageData(layers[i].diffuseTexture);
terrainInfo.diffuseTextureDatas.Add(layerData);
terrainInfo.diffuseScales.Add(new Vector4(1.0f / layers[i].tileSize.x, 1.0f / layers[i].tileSize.y));
}
for (int i = 0; i < terrain.terrainData.alphamapTextureCount; i++)
{
Texture2D srcmask = terrain.terrainData.GetAlphamapTexture(i);
ImageData splatData = TextureConverter.GetOrCreateImageData(srcmask);
terrainInfo.maskTextureDatas.Add(splatData);
}
if (terrainInfo.diffuseTextureDatas.Count > 0)
{
terrainInfo.descriptorBindings.Add(new VkDescriptorSetLayoutBinding()
{
binding = 0, descriptorType = VkDescriptorType.VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, stageFlags = VkShaderStageFlagBits.VK_SHADER_STAGE_FRAGMENT_BIT, descriptorCount = (uint)terrainInfo.diffuseTextureDatas.Count
});
terrainInfo.descriptorBindings.Add(new VkDescriptorSetLayoutBinding()
{
binding = 2, descriptorType = VkDescriptorType.VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, stageFlags = VkShaderStageFlagBits.VK_SHADER_STAGE_FRAGMENT_BIT, descriptorCount = (uint)terrainInfo.diffuseScales.Count
});
terrainInfo.shaderConsts.Add(terrainInfo.diffuseTextureDatas.Count);
terrainInfo.shaderDefines.Add("VSG_TERRAIN_LAYERS");
}
terrainInfo.descriptorBindings.Add(new VkDescriptorSetLayoutBinding()
{
binding = 3, descriptorType = VkDescriptorType.VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, stageFlags = VkShaderStageFlagBits.VK_SHADER_STAGE_FRAGMENT_BIT, descriptorCount = 1
});
if (terrainInfo.maskTextureDatas.Count > 0)
{
terrainInfo.descriptorBindings.Add(new VkDescriptorSetLayoutBinding()
{
binding = 1, descriptorType = VkDescriptorType.VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, stageFlags = VkShaderStageFlagBits.VK_SHADER_STAGE_FRAGMENT_BIT, descriptorCount = (uint)terrainInfo.maskTextureDatas.Count
});
terrainInfo.shaderConsts.Add(terrainInfo.maskTextureDatas.Count);
}
}
else
{
Material customMaterial = terrain.materialTemplate;
terrainInfo.customMaterial = MaterialConverter.CreateMaterialData(customMaterial, terrainInfo.shaderMapping);
terrainInfo.customMaterial.customDefines = terrainInfo.shaderDefines;
}
return(terrainInfo);
}