public static MeshInfo CreateMeshInfo(Mesh mesh)
{
MeshInfo meshinfo = new MeshInfo();
meshinfo.id = mesh.GetInstanceID();
int[] triangles = mesh.triangles;
CoordSytemConverter.FlipTriangleFaces(triangles);
meshinfo.triangles = NativeUtils.WrapArray(triangles);
meshinfo.use32BitIndicies = mesh.indexFormat == IndexFormat.UInt32 ? 1 : 0;
for (int i = 0; i < mesh.subMeshCount; i++)
{
MeshInfo.SubMesh submesh = new MeshInfo.SubMesh
{
firstIndex = mesh.GetIndexStart(i),
indexCount = mesh.GetIndexCount(i)
};
meshinfo.submeshs.Add(submesh);
}
Vector3[] vertices = mesh.vertices;
CoordSytemConverter.Convert(vertices);
meshinfo.verticies = NativeUtils.WrapArray(vertices);
Vector3[] normals = mesh.normals;
CoordSytemConverter.Convert(normals);
meshinfo.normals = NativeUtils.WrapArray(normals);
Vector4[] tangents = mesh.tangents;
CoordSytemConverter.Convert(tangents);
meshinfo.tangents = NativeUtils.WrapArray(tangents);
meshinfo.colors = NativeUtils.WrapArray(mesh.colors);
meshinfo.uv0 = NativeUtils.WrapArray(mesh.uv);
meshinfo.uv1 = NativeUtils.WrapArray(mesh.uv2);
_meshInfoCache[meshinfo.id] = meshinfo;
return(meshinfo);
}
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);
}