void loadCubemap(string filename, VkFormat format, bool forceLinearTiling)
{
KtxFile texCube;
using (var fs = File.OpenRead(filename))
{
texCube = KtxFile.Load(fs, readKeyValuePairs: false);
}
cubeMap.width = texCube.Header.PixelWidth;
cubeMap.height = texCube.Header.PixelHeight;
cubeMap.mipLevels = texCube.Header.NumberOfMipmapLevels;
VkMemoryAllocateInfo memAllocInfo = Initializers.memoryAllocateInfo();
VkMemoryRequirements memReqs;
// Create a host-visible staging buffer that contains the raw image data
VkBuffer stagingBuffer;
VkDeviceMemory stagingMemory;
VkBufferCreateInfo bufferCreateInfo = Initializers.bufferCreateInfo();
bufferCreateInfo.size = texCube.GetTotalSize();
// This buffer is used as a transfer source for the buffer copy
bufferCreateInfo.usage = VkBufferUsageFlags.TransferSrc;
bufferCreateInfo.sharingMode = VkSharingMode.Exclusive;
Util.CheckResult(vkCreateBuffer(device, &bufferCreateInfo, null, &stagingBuffer));
// Get memory requirements for the staging buffer (alignment, memory type bits)
vkGetBufferMemoryRequirements(device, stagingBuffer, &memReqs);
memAllocInfo.allocationSize = memReqs.size;
// Get memory type index for a host visible buffer
memAllocInfo.memoryTypeIndex = vulkanDevice.getMemoryType(memReqs.memoryTypeBits, VkMemoryPropertyFlags.HostVisible | VkMemoryPropertyFlags.HostCoherent);
Util.CheckResult(vkAllocateMemory(device, &memAllocInfo, null, &stagingMemory));
Util.CheckResult(vkBindBufferMemory(device, stagingBuffer, stagingMemory, 0));
// Copy texture data into staging buffer
byte *data;
Util.CheckResult(vkMapMemory(device, stagingMemory, 0, memReqs.size, 0, (void **)&data));
byte[] allTextureData = texCube.GetAllTextureData();
fixed(byte *texCubeDataPtr = &allTextureData[0])
{
Unsafe.CopyBlock(data, texCubeDataPtr, (uint)allTextureData.Length);
}
vkUnmapMemory(device, stagingMemory);
// Create optimal tiled target image
VkImageCreateInfo imageCreateInfo = Initializers.imageCreateInfo();
imageCreateInfo.imageType = VkImageType.Image2D;
imageCreateInfo.format = format;
imageCreateInfo.mipLevels = cubeMap.mipLevels;
imageCreateInfo.samples = VkSampleCountFlags.Count1;
imageCreateInfo.tiling = VkImageTiling.Optimal;
imageCreateInfo.usage = VkImageUsageFlags.Sampled;
imageCreateInfo.sharingMode = VkSharingMode.Exclusive;
imageCreateInfo.initialLayout = VkImageLayout.Undefined;
imageCreateInfo.extent = new VkExtent3D {
width = cubeMap.width, height = cubeMap.height, depth = 1
};
imageCreateInfo.usage = VkImageUsageFlags.TransferDst | VkImageUsageFlags.Sampled;
// Cube faces count as array layers in Vulkan
imageCreateInfo.arrayLayers = 6;
// This flag is required for cube map images
imageCreateInfo.flags = VkImageCreateFlags.CubeCompatible;
Util.CheckResult(vkCreateImage(device, &imageCreateInfo, null, out cubeMap.image));
vkGetImageMemoryRequirements(device, cubeMap.image, &memReqs);
memAllocInfo.allocationSize = memReqs.size;
memAllocInfo.memoryTypeIndex = vulkanDevice.getMemoryType(memReqs.memoryTypeBits, VkMemoryPropertyFlags.DeviceLocal);
Util.CheckResult(vkAllocateMemory(device, &memAllocInfo, null, out cubeMap.deviceMemory));
Util.CheckResult(vkBindImageMemory(device, cubeMap.image, cubeMap.deviceMemory, 0));
VkCommandBuffer copyCmd = createCommandBuffer(VkCommandBufferLevel.Primary, true);
// Setup buffer copy regions for each face including all of it's miplevels
NativeList <VkBufferImageCopy> bufferCopyRegions = new NativeList <VkBufferImageCopy>();
uint offset = 0;
for (uint face = 0; face < 6; face++)
{
for (uint level = 0; level < cubeMap.mipLevels; level++)
{
VkBufferImageCopy bufferCopyRegion = new VkBufferImageCopy();
bufferCopyRegion.imageSubresource.aspectMask = VkImageAspectFlags.Color;
bufferCopyRegion.imageSubresource.mipLevel = level;
bufferCopyRegion.imageSubresource.baseArrayLayer = face;
bufferCopyRegion.imageSubresource.layerCount = 1;
bufferCopyRegion.imageExtent.width = texCube.Faces[face].Mipmaps[level].Width;
bufferCopyRegion.imageExtent.height = texCube.Faces[face].Mipmaps[level].Height;
bufferCopyRegion.imageExtent.depth = 1;
bufferCopyRegion.bufferOffset = offset;
bufferCopyRegions.Add(bufferCopyRegion);
// Increase offset into staging buffer for next level / face
offset += texCube.Faces[face].Mipmaps[level].SizeInBytes;
}
}
// Image barrier for optimal image (target)
// Set initial layout for all array layers (faces) of the optimal (target) tiled texture
VkImageSubresourceRange subresourceRange = new VkImageSubresourceRange();
subresourceRange.aspectMask = VkImageAspectFlags.Color;
subresourceRange.baseMipLevel = 0;
subresourceRange.levelCount = cubeMap.mipLevels;
subresourceRange.layerCount = 6;
Tools.setImageLayout(
copyCmd,
cubeMap.image,
VkImageAspectFlags.Color,
VkImageLayout.Undefined,
VkImageLayout.TransferDstOptimal,
subresourceRange);
// Copy the cube map faces from the staging buffer to the optimal tiled image
vkCmdCopyBufferToImage(
copyCmd,
stagingBuffer,
cubeMap.image,
VkImageLayout.TransferDstOptimal,
bufferCopyRegions.Count,
bufferCopyRegions.Data);
// Change texture image layout to shader read after all faces have been copied
cubeMap.imageLayout = VkImageLayout.ShaderReadOnlyOptimal;
Tools.setImageLayout(
copyCmd,
cubeMap.image,
VkImageAspectFlags.Color,
VkImageLayout.TransferDstOptimal,
cubeMap.imageLayout,
subresourceRange);
flushCommandBuffer(copyCmd, queue, true);
// Create sampler
VkSamplerCreateInfo sampler = Initializers.samplerCreateInfo();
sampler.magFilter = VkFilter.Linear;
sampler.minFilter = VkFilter.Linear;
sampler.mipmapMode = VkSamplerMipmapMode.Linear;
sampler.addressModeU = VkSamplerAddressMode.ClampToEdge;
sampler.addressModeV = sampler.addressModeU;
sampler.addressModeW = sampler.addressModeU;
sampler.mipLodBias = 0.0f;
sampler.compareOp = VkCompareOp.Never;
sampler.minLod = 0.0f;
sampler.maxLod = cubeMap.mipLevels;
sampler.borderColor = VkBorderColor.FloatOpaqueWhite;
sampler.maxAnisotropy = 1.0f;
if (vulkanDevice.features.samplerAnisotropy == 1)
{
sampler.maxAnisotropy = vulkanDevice.properties.limits.maxSamplerAnisotropy;
sampler.anisotropyEnable = True;
}
Util.CheckResult(vkCreateSampler(device, &sampler, null, out cubeMap.sampler));
// Create image view
VkImageViewCreateInfo view = Initializers.imageViewCreateInfo();
// Cube map view type
view.viewType = VkImageViewType.ImageCube;
view.format = format;
view.components = new VkComponentMapping {
r = VkComponentSwizzle.R, g = VkComponentSwizzle.G, b = VkComponentSwizzle.B, a = VkComponentSwizzle.A
};
view.subresourceRange = new VkImageSubresourceRange {
aspectMask = VkImageAspectFlags.Color, baseMipLevel = 0, layerCount = 1, baseArrayLayer = 0, levelCount = 1
};
// 6 array layers (faces)
view.subresourceRange.layerCount = 6;
// Set number of mip levels
view.subresourceRange.levelCount = cubeMap.mipLevels;
view.image = cubeMap.image;
Util.CheckResult(vkCreateImageView(device, &view, null, out cubeMap.view));
// Clean up staging resources
vkFreeMemory(device, stagingMemory, null);
vkDestroyBuffer(device, stagingBuffer, null);
}
/**
* Loads a 3D model from a file into Vulkan buffers
*
* @param device Pointer to the Vulkan device used to generated the vertex and index buffers on
* @param filename File to load (must be a model format supported by ASSIMP)
* @param layout Vertex layout components (position, normals, tangents, etc.)
* @param createInfo MeshCreateInfo structure for load time settings like scale, center, etc.
* @param copyQueue Queue used for the memory staging copy commands (must support transfer)
* @param (Optional) flags ASSIMP model loading flags
*/
//public bool loadFromFile(string filename, vksVertexLayout layout, vksModelCreateInfo* createInfo, vksVulkanDevice device, VkQueue copyQueue, int flags)
//{
// this.device = device.LogicalDevice;
// ObjFile objFile;
// using (var fs = File.OpenRead(filename))
// {
// objFile = new ObjParser().Parse(fs);
// }
// string mtlFilename = Path.ChangeExtension(filename, "mtl");
// MtlFile mtlFile;
// using (var fs = File.OpenRead(mtlFilename))
// {
// mtlFile = new MtlParser().Parse(fs);
// }
// if (objFile != null)
// {
// parts.Clear();
// parts.Resize((uint)objFile.MeshGroups.Length);
// Vector3 scale = new Vector3(1.0f);
// Vector2 uvscale = new Vector2(1.0f);
// Vector3 center = new Vector3(0.0f);
// if (createInfo != null)
// {
// scale = createInfo->Scale;
// uvscale = createInfo->UVScale;
// center = createInfo->Center;
// }
// NativeList<float> vertexBuffer = new NativeList<float>();
// NativeList<uint> indexBuffer = new NativeList<uint>();
// vertexCount = 0;
// indexCount = 0;
// // Load meshes
// parts.Count = (uint)objFile.MeshGroups.Length;
// for (uint i = 0; i < objFile.MeshGroups.Length; i++)
// {
// ConstructedMeshInfo mesh = objFile.GetMesh(objFile.MeshGroups[i]);
// parts[i] = new ModelPart();
// parts[i].vertexBase = vertexCount;
// parts[i].indexBase = indexCount;
// vertexCount += (uint)mesh.Vertices.Length;
// var material = mtlFile.Definitions[objFile.MeshGroups[i].Material];
// Vector3 pColor = material.DiffuseReflectivity;
// Vector3 Zero3D = Vector3.Zero;
// for (uint j = 0; j < mesh.Vertices.Length; j++)
// {
// VertexPositionNormalTexture vertex = mesh.Vertices[j];
// Vector3* pPos = &vertex.Position;
// Vector3* pNormal = &vertex.Normal;
// Vector2* pTexCoord = &vertex.TextureCoordinates;
// Vector3* pTangent = &Zero3D;
// Vector3* pBiTangent = &Zero3D;
// /*
// const aiVector3D* pPos = &(paiMesh->mVertices[j]);
// const aiVector3D* pNormal = &(paiMesh->mNormals[j]);
// const aiVector3D* pTexCoord = (paiMesh->HasTextureCoords(0)) ? &(paiMesh->mTextureCoords[0][j]) : &Zero3D;
// const aiVector3D* pTangent = (paiMesh->HasTangentsAndBitangents()) ? &(paiMesh->mTangents[j]) : &Zero3D;
// const aiVector3D* pBiTangent = (paiMesh->HasTangentsAndBitangents()) ? &(paiMesh->mBitangents[j]) : &Zero3D;
// */
// foreach (var component in layout.Components)
// {
// switch (component)
// {
// case VertexComponent.VERTEX_COMPONENT_POSITION:
// vertexBuffer.Add(pPos.X * scale.X + center.X);
// vertexBuffer.Add(-pPos.Y * scale.Y + center.Y);
// vertexBuffer.Add(pPos.Z * scale.Z + center.Z);
// break;
// case VertexComponent.VERTEX_COMPONENT_NORMAL:
// vertexBuffer.Add(pNormal.X);
// vertexBuffer.Add(-pNormal.Y);
// vertexBuffer.Add(pNormal.Z);
// break;
// case VertexComponent.VERTEX_COMPONENT_UV:
// vertexBuffer.Add(pTexCoord.X * uvscale.X);
// vertexBuffer.Add(pTexCoord.Y * uvscale.Y);
// break;
// case VertexComponent.VERTEX_COMPONENT_COLOR:
// vertexBuffer.Add(pColor.X);
// vertexBuffer.Add(pColor.Y);
// vertexBuffer.Add(pColor.Z);
// break;
// case VertexComponent.VERTEX_COMPONENT_TANGENT:
// vertexBuffer.Add(pTangent.X);
// vertexBuffer.Add(pTangent.Y);
// vertexBuffer.Add(pTangent.Z);
// break;
// case VertexComponent.VERTEX_COMPONENT_BITANGENT:
// vertexBuffer.Add(pBiTangent.X);
// vertexBuffer.Add(pBiTangent.Y);
// vertexBuffer.Add(pBiTangent.Z);
// break;
// // Dummy components for padding
// case VertexComponent.VERTEX_COMPONENT_DUMMY_FLOAT:
// vertexBuffer.Add(0.0f);
// break;
// case VertexComponent.VERTEX_COMPONENT_DUMMY_VEC4:
// vertexBuffer.Add(0.0f);
// vertexBuffer.Add(0.0f);
// vertexBuffer.Add(0.0f);
// vertexBuffer.Add(0.0f);
// break;
// };
// }
// dim.Max.X = Math.Max(pPos.X, dim.Max.X);
// dim.Max.Y = Math.Max(pPos.Y, dim.Max.Y);
// dim.Max.Z = Math.Max(pPos.Z, dim.Max.Z);
// dim.Min.X = Math.Min(pPos.X, dim.Min.X);
// dim.Min.Y = Math.Min(pPos.Y, dim.Min.Y);
// dim.Min.Z = Math.Min(pPos.Z, dim.Min.Z);
// }
// dim.Size = dim.Max - dim.Min;
// parts[i].vertexCount = (uint)mesh.Vertices.Length;
// uint indexBase = indexBuffer.Count;
// foreach (var index in mesh.Indices)
// {
// indexBuffer.Add(index);
// }
// indexCount += (uint)mesh.Indices.Length;
// parts[i].indexCount += (uint)mesh.Indices.Length;
// /*
// for (uint j = 0; j < paiMesh->mNumFaces; j++)
// {
// const aiFace&Face = paiMesh->mFaces[j];
// if (Face.mNumIndices != 3)
// continue;
// indexBuffer.Add(indexBase + Face.mIndices[0]);
// indexBuffer.Add(indexBase + Face.mIndices[1]);
// indexBuffer.Add(indexBase + Face.mIndices[2]);
// parts[i].indexCount += 3;
// indexCount += 3;
// }
// */
// }
// uint vBufferSize = vertexBuffer.Count * sizeof(float);
// uint iBufferSize = indexBuffer.Count * sizeof(uint);
// // Use staging buffer to move vertex and index buffer to device local memory
// // Create staging buffers
// vksBuffer vertexStaging = new vksBuffer();
// vksBuffer indexStaging = new vksBuffer();
// // Vertex buffer
// Util.CheckResult(device.createBuffer(
// VkBufferUsageFlags.TransferSrc,
// VkMemoryPropertyFlags.HostVisible,
// vertexStaging,
// vBufferSize,
// vertexBuffer.Data.ToPointer()));
// // Index buffer
// Util.CheckResult(device.createBuffer(
// VkBufferUsageFlags.TransferSrc,
// VkMemoryPropertyFlags.HostVisible,
// indexStaging,
// iBufferSize,
// indexBuffer.Data.ToPointer()));
// // Create device local target buffers
// // Vertex buffer
// Util.CheckResult(device.createBuffer(
// VkBufferUsageFlags.VertexBuffer | VkBufferUsageFlags.TransferDst,
// VkMemoryPropertyFlags.DeviceLocal,
// vertices,
// vBufferSize));
// // Index buffer
// Util.CheckResult(device.createBuffer(
// VkBufferUsageFlags.IndexBuffer | VkBufferUsageFlags.TransferDst,
// VkMemoryPropertyFlags.DeviceLocal,
// indices,
// iBufferSize));
// // Copy from staging buffers
// VkCommandBuffer copyCmd = device.createCommandBuffer(VkCommandBufferLevel.Primary, true);
// VkBufferCopy copyRegion = new VkBufferCopy();
// copyRegion.size = vertices.size;
// vkCmdCopyBuffer(copyCmd, vertexStaging.buffer, vertices.buffer, 1, ©Region);
// copyRegion.size = indices.size;
// vkCmdCopyBuffer(copyCmd, indexStaging.buffer, indices.buffer, 1, ©Region);
// device.flushCommandBuffer(copyCmd, copyQueue);
// // Destroy staging resources
// vkDestroyBuffer(device.LogicalDevice, vertexStaging.buffer, null);
// vkFreeMemory(device.LogicalDevice, vertexStaging.memory, null);
// vkDestroyBuffer(device.LogicalDevice, indexStaging.buffer, null);
// vkFreeMemory(device.LogicalDevice, indexStaging.memory, null);
// return true;
// }
// else
// {
// Console.WriteLine("Error loading file.");
// return false;
// }
//}
/**
* Loads a 3D model from a file into Vulkan buffers
*
* @param device Pointer to the Vulkan device used to generated the vertex and index buffers on
* @param filename File to load (must be a model format supported by ASSIMP)
* @param layout Vertex layout components (position, normals, tangents, etc.)
* @param createInfo MeshCreateInfo structure for load time settings like scale, center, etc.
* @param copyQueue Queue used for the memory staging copy commands (must support transfer)
* @param (Optional) flags ASSIMP model loading flags
*/
bool loadFromFile(string filename, vksVertexLayout layout, vksModelCreateInfo *createInfo, vksVulkanDevice device, VkQueue copyQueue, PostProcessSteps flags = DefaultPostProcessSteps)
{
this.device = device.LogicalDevice;
// Load file
var assimpContext = new AssimpContext();
var pScene = assimpContext.ImportFile(filename, flags);
parts.Clear();
parts.Count = (uint)pScene.Meshes.Count;
Vector3 scale = new Vector3(1.0f);
Vector2 uvscale = new Vector2(1.0f);
Vector3 center = new Vector3(0.0f);
if (createInfo != null)
{
scale = createInfo->Scale;
uvscale = createInfo->UVScale;
center = createInfo->Center;
}
NativeList <float> vertexBuffer = new NativeList <float>();
NativeList <uint> indexBuffer = new NativeList <uint>();
vertexCount = 0;
indexCount = 0;
// Load meshes
for (int i = 0; i < pScene.Meshes.Count; i++)
{
var paiMesh = pScene.Meshes[i];
parts[i] = new ModelPart();
parts[i].vertexBase = vertexCount;
parts[i].indexBase = indexCount;
vertexCount += (uint)paiMesh.VertexCount;
var pColor = pScene.Materials[paiMesh.MaterialIndex].ColorDiffuse;
Vector3D Zero3D = new Vector3D(0.0f, 0.0f, 0.0f);
for (int j = 0; j < paiMesh.VertexCount; j++)
{
Vector3D pPos = paiMesh.Vertices[j];
Vector3D pNormal = paiMesh.Normals[j];
Vector3D pTexCoord = paiMesh.HasTextureCoords(0) ? paiMesh.TextureCoordinateChannels[0][j] : Zero3D;
Vector3D pTangent = paiMesh.HasTangentBasis ? paiMesh.Tangents[j] : Zero3D;
Vector3D pBiTangent = paiMesh.HasTangentBasis ? paiMesh.BiTangents[j] : Zero3D;
foreach (var component in layout.Components)
{
switch (component)
{
case VertexComponent.VERTEX_COMPONENT_POSITION:
vertexBuffer.Add(pPos.X * scale.X + center.X);
vertexBuffer.Add(-pPos.Y * scale.Y + center.Y);
vertexBuffer.Add(pPos.Z * scale.Z + center.Z);
break;
case VertexComponent.VERTEX_COMPONENT_NORMAL:
vertexBuffer.Add(pNormal.X);
vertexBuffer.Add(-pNormal.Y);
vertexBuffer.Add(pNormal.Z);
break;
case VertexComponent.VERTEX_COMPONENT_UV:
vertexBuffer.Add(pTexCoord.X * uvscale.X);
vertexBuffer.Add(pTexCoord.Y * uvscale.Y);
break;
case VertexComponent.VERTEX_COMPONENT_COLOR:
vertexBuffer.Add(pColor.R);
vertexBuffer.Add(pColor.G);
vertexBuffer.Add(pColor.B);
break;
case VertexComponent.VERTEX_COMPONENT_TANGENT:
vertexBuffer.Add(pTangent.X);
vertexBuffer.Add(pTangent.Y);
vertexBuffer.Add(pTangent.Z);
break;
case VertexComponent.VERTEX_COMPONENT_BITANGENT:
vertexBuffer.Add(pBiTangent.X);
vertexBuffer.Add(pBiTangent.Y);
vertexBuffer.Add(pBiTangent.Z);
break;
// Dummy components for padding
case VertexComponent.VERTEX_COMPONENT_DUMMY_FLOAT:
vertexBuffer.Add(0.0f);
break;
case VertexComponent.VERTEX_COMPONENT_DUMMY_VEC4:
vertexBuffer.Add(0.0f);
vertexBuffer.Add(0.0f);
vertexBuffer.Add(0.0f);
vertexBuffer.Add(0.0f);
break;
}
;
}
dim.Max.X = (float)Math.Max(pPos.X, dim.Max.X);
dim.Max.Y = (float)Math.Max(pPos.Y, dim.Max.Y);
dim.Max.Z = (float)Math.Max(pPos.Z, dim.Max.Z);
dim.Min.X = (float)Math.Min(pPos.X, dim.Min.X);
dim.Min.Y = (float)Math.Min(pPos.Y, dim.Min.Y);
dim.Min.Z = (float)Math.Min(pPos.Z, dim.Min.Z);
}
dim.Size = dim.Max - dim.Min;
parts[i].vertexCount = (uint)paiMesh.VertexCount;
uint indexBase = indexBuffer.Count;
for (uint j = 0; j < paiMesh.FaceCount; j++)
{
var Face = paiMesh.Faces[(int)j];
if (Face.IndexCount != 3)
{
continue;
}
indexBuffer.Add(indexBase + (uint)Face.Indices[0]);
indexBuffer.Add(indexBase + (uint)Face.Indices[1]);
indexBuffer.Add(indexBase + (uint)Face.Indices[2]);
parts[i].indexCount += 3;
indexCount += 3;
}
}
uint vBufferSize = (vertexBuffer.Count) * sizeof(float);
uint iBufferSize = (indexBuffer.Count) * sizeof(uint);
// Use staging buffer to move vertex and index buffer to device local memory
// Create staging buffers
vksBuffer vertexStaging = new vksBuffer();
vksBuffer indexStaging = new vksBuffer();
// Vertex buffer
Util.CheckResult(device.createBuffer(
VkBufferUsageFlags.TransferSrc,
VkMemoryPropertyFlags.HostVisible,
vertexStaging,
vBufferSize,
vertexBuffer.Data.ToPointer()));
// Index buffer
Util.CheckResult(device.createBuffer(
VkBufferUsageFlags.TransferSrc,
VkMemoryPropertyFlags.HostVisible,
indexStaging,
iBufferSize,
indexBuffer.Data.ToPointer()));
// Create device local target buffers
// Vertex buffer
Util.CheckResult(device.createBuffer(
VkBufferUsageFlags.VertexBuffer | VkBufferUsageFlags.TransferDst,
VkMemoryPropertyFlags.DeviceLocal,
vertices,
vBufferSize));
// Index buffer
Util.CheckResult(device.createBuffer(
VkBufferUsageFlags.IndexBuffer | VkBufferUsageFlags.TransferDst,
VkMemoryPropertyFlags.DeviceLocal,
indices,
iBufferSize));
// Copy from staging buffers
VkCommandBuffer copyCmd = device.createCommandBuffer(VkCommandBufferLevel.Primary, true);
VkBufferCopy copyRegion = new VkBufferCopy();
copyRegion.size = vertices.size;
vkCmdCopyBuffer(copyCmd, vertexStaging.buffer, vertices.buffer, 1, ©Region);
copyRegion.size = indices.size;
vkCmdCopyBuffer(copyCmd, indexStaging.buffer, indices.buffer, 1, ©Region);
device.flushCommandBuffer(copyCmd, copyQueue);
// Destroy staging resources
vkDestroyBuffer(device.LogicalDevice, vertexStaging.buffer, null);
vkFreeMemory(device.LogicalDevice, vertexStaging.memory, null);
vkDestroyBuffer(device.LogicalDevice, indexStaging.buffer, null);
vkFreeMemory(device.LogicalDevice, indexStaging.memory, null);
return(true);
}
void loadTexture(string fileName, VkFormat format, bool forceLinearTiling)
{
KtxFile tex2D;
using (var fs = File.OpenRead(fileName))
{
tex2D = KtxFile.Load(fs, false);
}
VkFormatProperties formatProperties;
texture.width = tex2D.Header.PixelWidth;
texture.height = tex2D.Header.PixelHeight;
texture.mipLevels = tex2D.Header.NumberOfMipmapLevels;
// Get Device properites for the requested texture format
vkGetPhysicalDeviceFormatProperties(PhysicalDevice, format, &formatProperties);
// Only use linear tiling if requested (and supported by the Device)
// Support for linear tiling is mostly limited, so prefer to use
// optimal tiling instead
// On most implementations linear tiling will only support a very
// limited amount of formats and features (mip maps, cubemaps, arrays, etc.)
uint useStaging = 1;
// Only use linear tiling if forced
if (forceLinearTiling)
{
// Don't use linear if format is not supported for (linear) shader sampling
useStaging = ((formatProperties.linearTilingFeatures & VkFormatFeatureFlags.SampledImage) != VkFormatFeatureFlags.SampledImage) ? 1u : 0u;
}
VkMemoryAllocateInfo memAllocInfo = Initializers.memoryAllocateInfo();
VkMemoryRequirements memReqs = new VkMemoryRequirements();
if (useStaging == 1)
{
// Create a host-visible staging buffer that contains the raw image data
VkBuffer stagingBuffer;
VkDeviceMemory stagingMemory;
VkBufferCreateInfo bufferCreateInfo = Initializers.bufferCreateInfo();
bufferCreateInfo.size = tex2D.GetTotalSize();
// This buffer is used as a transfer source for the buffer copy
bufferCreateInfo.usage = VkBufferUsageFlags.TransferSrc;
bufferCreateInfo.sharingMode = VkSharingMode.Exclusive;
Util.CheckResult(vkCreateBuffer(Device, &bufferCreateInfo, null, &stagingBuffer));
// Get memory requirements for the staging buffer (alignment, memory type bits)
vkGetBufferMemoryRequirements(Device, stagingBuffer, &memReqs);
memAllocInfo.allocationSize = memReqs.size;
// Get memory type index for a host visible buffer
memAllocInfo.memoryTypeIndex = VulkanDevice.GetMemoryType(memReqs.memoryTypeBits, VkMemoryPropertyFlags.HostVisible | VkMemoryPropertyFlags.HostCoherent);
Util.CheckResult(vkAllocateMemory(Device, &memAllocInfo, null, &stagingMemory));
Util.CheckResult(vkBindBufferMemory(Device, stagingBuffer, stagingMemory, 0));
// Copy texture data into staging buffer
byte *data;
Util.CheckResult(vkMapMemory(Device, stagingMemory, 0, memReqs.size, 0, (void **)&data));
byte[] allData = tex2D.GetAllTextureData();
fixed(byte *tex2DDataPtr = &allData[0])
{
Unsafe.CopyBlock(data, tex2DDataPtr, (uint)allData.Length);
}
vkUnmapMemory(Device, stagingMemory);
// Setup buffer copy regions for each mip level
NativeList <VkBufferImageCopy> bufferCopyRegions = new NativeList <VkBufferImageCopy>();
uint offset = 0;
for (uint i = 0; i < texture.mipLevels; i++)
{
VkBufferImageCopy bufferCopyRegion = new VkBufferImageCopy();
bufferCopyRegion.imageSubresource.aspectMask = VkImageAspectFlags.Color;
bufferCopyRegion.imageSubresource.mipLevel = i;
bufferCopyRegion.imageSubresource.baseArrayLayer = 0;
bufferCopyRegion.imageSubresource.layerCount = 1;
bufferCopyRegion.imageExtent.width = tex2D.Faces[0].Mipmaps[i].Width;
bufferCopyRegion.imageExtent.height = tex2D.Faces[0].Mipmaps[i].Height;
bufferCopyRegion.imageExtent.depth = 1;
bufferCopyRegion.bufferOffset = offset;
bufferCopyRegions.Add(bufferCopyRegion);
offset += tex2D.Faces[0].Mipmaps[i].SizeInBytes;
}
// Create optimal tiled target image
VkImageCreateInfo imageCreateInfo = Initializers.imageCreateInfo();
imageCreateInfo.imageType = VkImageType._2d;
imageCreateInfo.format = format;
imageCreateInfo.mipLevels = texture.mipLevels;
imageCreateInfo.arrayLayers = 1;
imageCreateInfo.samples = VkSampleCountFlags._1;
imageCreateInfo.tiling = VkImageTiling.Optimal;
imageCreateInfo.sharingMode = VkSharingMode.Exclusive;
// Set initial layout of the image to undefined
imageCreateInfo.initialLayout = VkImageLayout.Undefined;
imageCreateInfo.extent = new VkExtent3D {
width = texture.width, height = texture.height, depth = 1
};
imageCreateInfo.usage = VkImageUsageFlags.TransferDst | VkImageUsageFlags.Sampled;
Util.CheckResult(vkCreateImage(Device, &imageCreateInfo, null, out texture.image));
vkGetImageMemoryRequirements(Device, texture.image, &memReqs);
memAllocInfo.allocationSize = memReqs.size;
memAllocInfo.memoryTypeIndex = VulkanDevice.GetMemoryType(memReqs.memoryTypeBits, VkMemoryPropertyFlags.DeviceLocal);
Util.CheckResult(vkAllocateMemory(Device, &memAllocInfo, null, out texture.DeviceMemory));
Util.CheckResult(vkBindImageMemory(Device, texture.image, texture.DeviceMemory, 0));
VkCommandBuffer copyCmd = base.createCommandBuffer(VkCommandBufferLevel.Primary, true);
// Image barrier for optimal image
// The sub resource range describes the regions of the image we will be transition
VkImageSubresourceRange subresourceRange = new VkImageSubresourceRange();
// Image only contains color data
subresourceRange.aspectMask = VkImageAspectFlags.Color;
// Start at first mip level
subresourceRange.baseMipLevel = 0;
// We will transition on all mip levels
subresourceRange.levelCount = texture.mipLevels;
// The 2D texture only has one layer
subresourceRange.layerCount = 1;
// Optimal image will be used as destination for the copy, so we must transfer from our
// initial undefined image layout to the transfer destination layout
setImageLayout(
copyCmd,
texture.image,
VkImageAspectFlags.Color,
VkImageLayout.Undefined,
VkImageLayout.TransferDstOptimal,
subresourceRange);
// Copy mip levels from staging buffer
vkCmdCopyBufferToImage(
copyCmd,
stagingBuffer,
texture.image,
VkImageLayout.TransferDstOptimal,
bufferCopyRegions.Count,
bufferCopyRegions.Data);
// Change texture image layout to shader read after all mip levels have been copied
texture.imageLayout = VkImageLayout.ShaderReadOnlyOptimal;
setImageLayout(
copyCmd,
texture.image,
VkImageAspectFlags.Color,
VkImageLayout.TransferDstOptimal,
texture.imageLayout,
subresourceRange);
flushCommandBuffer(copyCmd, Queue, true);
// Clean up staging resources
vkFreeMemory(Device, stagingMemory, null);
vkDestroyBuffer(Device, stagingBuffer, null);
}
else
{
throw new NotImplementedException();
/*
* // Prefer using optimal tiling, as linear tiling
* // may support only a small set of features
* // depending on implementation (e.g. no mip maps, only one layer, etc.)
*
* VkImage mappableImage;
* VkDeviceMemory mappableMemory;
*
* // Load mip map level 0 to linear tiling image
* VkImageCreateInfo imageCreateInfo = Initializers.imageCreateInfo();
* imageCreateInfo.imageType = VkImageType._2d;
* imageCreateInfo.format = format;
* imageCreateInfo.mipLevels = 1;
* imageCreateInfo.arrayLayers = 1;
* imageCreateInfo.samples = VkSampleCountFlags._1;
* imageCreateInfo.tiling = VkImageTiling.Linear;
* imageCreateInfo.usage = VkImageUsageFlags.Sampled;
* imageCreateInfo.sharingMode = VkSharingMode.Exclusive;
* imageCreateInfo.initialLayout = VkImageLayout.Preinitialized;
* imageCreateInfo.extent = new VkExtent3D { width = texture.width, height = texture.height, depth = 1 };
* Util.CheckResult(vkCreateImage(Device, &imageCreateInfo, null, &mappableImage));
*
* // Get memory requirements for this image
* // like size and alignment
* vkGetImageMemoryRequirements(Device, mappableImage, &memReqs);
* // Set memory allocation size to required memory size
* memAllocInfo.allocationSize = memReqs.size;
*
* // Get memory type that can be mapped to host memory
* memAllocInfo.memoryTypeIndex = VulkanDevice.GetMemoryType(memReqs.memoryTypeBits, VkMemoryPropertyFlags.HostVisible | VkMemoryPropertyFlags.HostCoherent);
*
* // Allocate host memory
* Util.CheckResult(vkAllocateMemory(Device, &memAllocInfo, null, &mappableMemory));
*
* // Bind allocated image for use
* Util.CheckResult(vkBindImageMemory(Device, mappableImage, mappableMemory, 0));
*
* // Get sub resource layout
* // Mip map count, array layer, etc.
* VkImageSubresource subRes = new VkImageSubresource();
* subRes.aspectMask = VkImageAspectFlags.Color;
*
* VkSubresourceLayout subResLayout;
* void* data;
*
* // Get sub resources layout
* // Includes row pitch, size offsets, etc.
* vkGetImageSubresourceLayout(Device, mappableImage, &subRes, &subResLayout);
*
* // Map image memory
* Util.CheckResult(vkMapMemory(Device, mappableMemory, 0, memReqs.size, 0, &data));
*
* // Copy image data into memory
* memcpy(data, tex2D[subRes.mipLevel].data(), tex2D[subRes.mipLevel].size());
*
* vkUnmapMemory(Device, mappableMemory);
*
* // Linear tiled images don't need to be staged
* // and can be directly used as textures
* texture.image = mappableImage;
* texture.DeviceMemory = mappableMemory;
* texture.imageLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
*
* VkCommandBuffer copyCmd = VulkanExampleBase::createCommandBuffer(VK_COMMAND_BUFFER_LEVEL_PRIMARY, true);
*
* // Setup image memory barrier transfer image to shader read layout
*
* // The sub resource range describes the regions of the image we will be transition
* VkImageSubresourceRange subresourceRange = { };
* // Image only contains color data
* subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
* // Start at first mip level
* subresourceRange.baseMipLevel = 0;
* // Only one mip level, most implementations won't support more for linear tiled images
* subresourceRange.levelCount = 1;
* // The 2D texture only has one layer
* subresourceRange.layerCount = 1;
*
* setImageLayout(
* copyCmd,
* texture.image,
* VK_IMAGE_ASPECT_COLOR_BIT,
* VK_IMAGE_LAYOUT_PREINITIALIZED,
* texture.imageLayout,
* subresourceRange);
*
* VulkanExampleBase::flushCommandBuffer(copyCmd, queue, true);
*/
}
// Create sampler
// In Vulkan textures are accessed by samplers
// This separates all the sampling information from the
// texture data
// This means you could have multiple sampler objects
// for the same texture with different settings
// Similar to the samplers available with OpenGL 3.3
VkSamplerCreateInfo sampler = Initializers.samplerCreateInfo();
sampler.magFilter = VkFilter.Linear;
sampler.minFilter = VkFilter.Linear;
sampler.mipmapMode = VkSamplerMipmapMode.Linear;
sampler.addressModeU = VkSamplerAddressMode.Repeat;
sampler.addressModeV = VkSamplerAddressMode.Repeat;
sampler.addressModeW = VkSamplerAddressMode.Repeat;
sampler.mipLodBias = 0.0f;
sampler.compareOp = VkCompareOp.Never;
sampler.minLod = 0.0f;
// Set max level-of-detail to mip level count of the texture
sampler.maxLod = (useStaging == 1) ? (float)texture.mipLevels : 0.0f;
// Enable anisotropic filtering
// This feature is optional, so we must check if it's supported on the Device
if (VulkanDevice.Features.samplerAnisotropy == 1)
{
// Use max. level of anisotropy for this example
sampler.maxAnisotropy = VulkanDevice.Properties.limits.maxSamplerAnisotropy;
sampler.anisotropyEnable = True;
}
else
{
// The Device does not support anisotropic filtering
sampler.maxAnisotropy = 1.0f;
sampler.anisotropyEnable = False;
}
sampler.borderColor = VkBorderColor.FloatOpaqueWhite;
Util.CheckResult(vkCreateSampler(Device, ref sampler, null, out texture.sampler));
// Create image view
// Textures are not directly accessed by the shaders and
// are abstracted by image views containing additional
// information and sub resource ranges
VkImageViewCreateInfo view = Initializers.imageViewCreateInfo();
view.viewType = VkImageViewType._2d;
view.format = format;
view.components = new VkComponentMapping {
r = VkComponentSwizzle.R, g = VkComponentSwizzle.G, b = VkComponentSwizzle.B, a = VkComponentSwizzle.A
};
// The subresource range describes the set of mip levels (and array layers) that can be accessed through this image view
// It's possible to create multiple image views for a single image referring to different (and/or overlapping) ranges of the image
view.subresourceRange.aspectMask = VkImageAspectFlags.Color;
view.subresourceRange.baseMipLevel = 0;
view.subresourceRange.baseArrayLayer = 0;
view.subresourceRange.layerCount = 1;
// Linear tiling usually won't support mip maps
// Only set mip map count if optimal tiling is used
view.subresourceRange.levelCount = (useStaging == 1) ? texture.mipLevels : 1;
// The view will be based on the texture's image
view.image = texture.image;
Util.CheckResult(vkCreateImageView(Device, &view, null, out texture.view));
}
/**
* Load a 2D texture including all mip levels
*
* @param filename File to load (supports .ktx and .dds)
* @param format Vulkan format of the image data stored in the file
* @param device Vulkan device to create the texture on
* @param copyQueue Queue used for the texture staging copy commands (must support transfer)
* @param (Optional) imageUsageFlags Usage flags for the texture's image (defaults to VK_IMAGE_USAGE_SAMPLED_BIT)
* @param (Optional) imageLayout Usage layout for the texture (defaults VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL)
* @param (Optional) forceLinear Force linear tiling (not advised, defaults to false)
*
*/
public void loadFromFile(
string filename,
VkFormat format,
vksVulkanDevice device,
VkQueue copyQueue,
VkImageUsageFlags imageUsageFlags = VkImageUsageFlags.Sampled,
VkImageLayout imageLayout = VkImageLayout.ShaderReadOnlyOptimal,
bool forceLinear = false)
{
KtxFile tex2D;
using (var fs = File.OpenRead(filename))
{
tex2D = KtxFile.Load(fs, false);
}
this.device = device;
width = tex2D.Header.PixelWidth;
height = tex2D.Header.PixelHeight;
if (height == 0)
{
height = width;
}
mipLevels = tex2D.Header.NumberOfMipmapLevels;
// Get device properites for the requested texture format
VkFormatProperties formatProperties;
vkGetPhysicalDeviceFormatProperties(device.PhysicalDevice, format, out formatProperties);
// Only use linear tiling if requested (and supported by the device)
// Support for linear tiling is mostly limited, so prefer to use
// optimal tiling instead
// On most implementations linear tiling will only support a very
// limited amount of formats and features (mip maps, cubemaps, arrays, etc.)
bool useStaging = !forceLinear;
VkMemoryAllocateInfo memAllocInfo = Initializers.memoryAllocateInfo();
VkMemoryRequirements memReqs;
// Use a separate command buffer for texture loading
VkCommandBuffer copyCmd = device.createCommandBuffer(VkCommandBufferLevel.Primary, true);
if (useStaging)
{
// Create a host-visible staging buffer that contains the raw image data
VkBuffer stagingBuffer;
VkDeviceMemory stagingMemory;
VkBufferCreateInfo bufferCreateInfo = Initializers.bufferCreateInfo();
bufferCreateInfo.size = tex2D.GetTotalSize();
// This buffer is used as a transfer source for the buffer copy
bufferCreateInfo.usage = VkBufferUsageFlags.TransferSrc;
bufferCreateInfo.sharingMode = VkSharingMode.Exclusive;
Util.CheckResult(vkCreateBuffer(device.LogicalDevice, &bufferCreateInfo, null, &stagingBuffer));
// Get memory requirements for the staging buffer (alignment, memory type bits)
vkGetBufferMemoryRequirements(device.LogicalDevice, stagingBuffer, &memReqs);
memAllocInfo.allocationSize = memReqs.size;
// Get memory type index for a host visible buffer
memAllocInfo.memoryTypeIndex = device.getMemoryType(memReqs.memoryTypeBits, VkMemoryPropertyFlags.HostVisible | VkMemoryPropertyFlags.HostCoherent);
Util.CheckResult(vkAllocateMemory(device.LogicalDevice, &memAllocInfo, null, &stagingMemory));
Util.CheckResult(vkBindBufferMemory(device.LogicalDevice, stagingBuffer, stagingMemory, 0));
// Copy texture data into staging buffer
byte *data;
Util.CheckResult(vkMapMemory(device.LogicalDevice, stagingMemory, 0, memReqs.size, 0, (void **)&data));
byte[] pixelData = tex2D.GetAllTextureData();
fixed(byte *pixelDataPtr = &pixelData[0])
{
Unsafe.CopyBlock(data, pixelDataPtr, (uint)pixelData.Length);
}
vkUnmapMemory(device.LogicalDevice, stagingMemory);
// Setup buffer copy regions for each mip level
NativeList <VkBufferImageCopy> bufferCopyRegions = new NativeList <VkBufferImageCopy>();
uint offset = 0;
for (uint i = 0; i < mipLevels; i++)
{
VkBufferImageCopy bufferCopyRegion = new VkBufferImageCopy();
bufferCopyRegion.imageSubresource.aspectMask = VkImageAspectFlags.Color;
bufferCopyRegion.imageSubresource.mipLevel = i;
bufferCopyRegion.imageSubresource.baseArrayLayer = 0;
bufferCopyRegion.imageSubresource.layerCount = 1;
bufferCopyRegion.imageExtent.width = tex2D.Faces[0].Mipmaps[i].Width;
bufferCopyRegion.imageExtent.height = tex2D.Faces[0].Mipmaps[i].Height;
bufferCopyRegion.imageExtent.depth = 1;
bufferCopyRegion.bufferOffset = offset;
bufferCopyRegions.Add(bufferCopyRegion);
offset += tex2D.Faces[0].Mipmaps[i].SizeInBytes;
}
// Create optimal tiled target image
VkImageCreateInfo imageCreateInfo = Initializers.imageCreateInfo();
imageCreateInfo.imageType = VkImageType.Image2D;
imageCreateInfo.format = format;
imageCreateInfo.mipLevels = mipLevels;
imageCreateInfo.arrayLayers = 1;
imageCreateInfo.samples = VkSampleCountFlags.Count1;
imageCreateInfo.tiling = VkImageTiling.Optimal;
imageCreateInfo.sharingMode = VkSharingMode.Exclusive;
imageCreateInfo.initialLayout = VkImageLayout.Undefined;
imageCreateInfo.extent = new VkExtent3D {
width = width, height = height, depth = 1
};
imageCreateInfo.usage = imageUsageFlags;
// Ensure that the TRANSFER_DST bit is set for staging
if ((imageCreateInfo.usage & VkImageUsageFlags.TransferDst) == 0)
{
imageCreateInfo.usage |= VkImageUsageFlags.TransferDst;
}
Util.CheckResult(vkCreateImage(device.LogicalDevice, &imageCreateInfo, null, out image));
vkGetImageMemoryRequirements(device.LogicalDevice, image, &memReqs);
memAllocInfo.allocationSize = memReqs.size;
memAllocInfo.memoryTypeIndex = device.getMemoryType(memReqs.memoryTypeBits, VkMemoryPropertyFlags.DeviceLocal);
Util.CheckResult(vkAllocateMemory(device.LogicalDevice, &memAllocInfo, null, out deviceMemory));
Util.CheckResult(vkBindImageMemory(device.LogicalDevice, image, deviceMemory, 0));
VkImageSubresourceRange subresourceRange = new VkImageSubresourceRange();
subresourceRange.aspectMask = VkImageAspectFlags.Color;
subresourceRange.baseMipLevel = 0;
subresourceRange.levelCount = mipLevels;
subresourceRange.layerCount = 1;
// Image barrier for optimal image (target)
// Optimal image will be used as destination for the copy
Tools.setImageLayout(
copyCmd,
image,
VkImageAspectFlags.Color,
VkImageLayout.Undefined,
VkImageLayout.TransferDstOptimal,
subresourceRange);
// Copy mip levels from staging buffer
vkCmdCopyBufferToImage(
copyCmd,
stagingBuffer,
image,
VkImageLayout.TransferDstOptimal,
bufferCopyRegions.Count,
bufferCopyRegions.Data);
// Change texture image layout to shader read after all mip levels have been copied
this.imageLayout = imageLayout;
Tools.setImageLayout(
copyCmd,
image,
VkImageAspectFlags.Color,
VkImageLayout.TransferDstOptimal,
imageLayout,
subresourceRange);
device.flushCommandBuffer(copyCmd, copyQueue);
// Clean up staging resources
vkFreeMemory(device.LogicalDevice, stagingMemory, null);
vkDestroyBuffer(device.LogicalDevice, stagingBuffer, null);
}
else
{
throw new NotImplementedException();
/*
* // Prefer using optimal tiling, as linear tiling
* // may support only a small set of features
* // depending on implementation (e.g. no mip maps, only one layer, etc.)
*
* // Check if this support is supported for linear tiling
* Debug.Assert((formatProperties.linearTilingFeatures & VkFormatFeatureFlags.SampledImage) != 0);
*
* VkImage mappableImage;
* VkDeviceMemory mappableMemory;
*
* VkImageCreateInfo imageCreateInfo = Initializers.imageCreateInfo();
* imageCreateInfo.imageType = VkImageType._2d;
* imageCreateInfo.format = format;
* imageCreateInfo.extent = new VkExtent3D { width = width, height = height, depth = 1 };
* imageCreateInfo.mipLevels = 1;
* imageCreateInfo.arrayLayers = 1;
* imageCreateInfo.samples = VkSampleCountFlags._1;
* imageCreateInfo.tiling = VkImageTiling.Linear;
* imageCreateInfo.usage = imageUsageFlags;
* imageCreateInfo.sharingMode = VkSharingMode.Exclusive;
* imageCreateInfo.initialLayout = VkImageLayout.Undefined;
*
* // Load mip map level 0 to linear tiling image
* Util.CheckResult(vkCreateImage(device.LogicalDevice, &imageCreateInfo, null, &mappableImage));
*
* // Get memory requirements for this image
* // like size and alignment
* vkGetImageMemoryRequirements(device.LogicalDevice, mappableImage, &memReqs);
* // Set memory allocation size to required memory size
* memAllocInfo.allocationSize = memReqs.size;
*
* // Get memory type that can be mapped to host memory
* memAllocInfo.memoryTypeIndex = device.GetMemoryType(memReqs.memoryTypeBits, VkMemoryPropertyFlags.HostVisible | VkMemoryPropertyFlags.HostCoherent);
*
* // Allocate host memory
* Util.CheckResult(vkAllocateMemory(device.LogicalDevice, &memAllocInfo, null, &mappableMemory));
*
* // Bind allocated image for use
* Util.CheckResult(vkBindImageMemory(device.LogicalDevice, mappableImage, mappableMemory, 0));
*
* // Get sub resource layout
* // Mip map count, array layer, etc.
* VkImageSubresource subRes = new VkImageSubresource();
* subRes.aspectMask = VkImageAspectFlags.Color;
* subRes.mipLevel = 0;
*
* VkSubresourceLayout subResLayout;
* void* data;
*
* // Get sub resources layout
* // Includes row pitch, size offsets, etc.
* vkGetImageSubresourceLayout(device.LogicalDevice, mappableImage, &subRes, &subResLayout);
*
* // Map image memory
* Util.CheckResult(vkMapMemory(device.LogicalDevice, mappableMemory, 0, memReqs.size, 0, &data));
*
* // Copy image data into memory
* memcpy(data, tex2D[subRes.mipLevel].data(), tex2D[subRes.mipLevel].size());
*
* vkUnmapMemory(device.LogicalDevice, mappableMemory);
*
* // Linear tiled images don't need to be staged
* // and can be directly used as textures
* image = mappableImage;
* deviceMemory = mappableMemory;
* imageLayout = imageLayout;
*
* // Setup image memory barrier
* vks::tools::setImageLayout(copyCmd, image, VkImageAspectFlags.Color, VkImageLayout.Undefined, imageLayout);
*
* device.flushCommandBuffer(copyCmd, copyQueue);
*/
}
// Create a defaultsampler
VkSamplerCreateInfo samplerCreateInfo = VkSamplerCreateInfo.New();
samplerCreateInfo.magFilter = VkFilter.Linear;
samplerCreateInfo.minFilter = VkFilter.Linear;
samplerCreateInfo.mipmapMode = VkSamplerMipmapMode.Linear;
samplerCreateInfo.addressModeU = VkSamplerAddressMode.Repeat;
samplerCreateInfo.addressModeV = VkSamplerAddressMode.Repeat;
samplerCreateInfo.addressModeW = VkSamplerAddressMode.Repeat;
samplerCreateInfo.mipLodBias = 0.0f;
samplerCreateInfo.compareOp = VkCompareOp.Never;
samplerCreateInfo.minLod = 0.0f;
// Max level-of-detail should match mip level count
samplerCreateInfo.maxLod = (useStaging) ? (float)mipLevels : 0.0f;
// Enable anisotropic filtering
samplerCreateInfo.maxAnisotropy = 8;
samplerCreateInfo.anisotropyEnable = True;
samplerCreateInfo.borderColor = VkBorderColor.FloatOpaqueWhite;
Util.CheckResult(vkCreateSampler(device.LogicalDevice, &samplerCreateInfo, null, out sampler));
// Create image view
// Textures are not directly accessed by the shaders and
// are abstracted by image views containing additional
// information and sub resource ranges
VkImageViewCreateInfo viewCreateInfo = VkImageViewCreateInfo.New();
viewCreateInfo.viewType = VkImageViewType.Image2D;
viewCreateInfo.format = format;
viewCreateInfo.components = new VkComponentMapping {
r = VkComponentSwizzle.R, g = VkComponentSwizzle.G, b = VkComponentSwizzle.B, a = VkComponentSwizzle.A
};
viewCreateInfo.subresourceRange = new VkImageSubresourceRange {
aspectMask = VkImageAspectFlags.Color, baseMipLevel = 0, levelCount = 1, baseArrayLayer = 0, layerCount = 1
};
// Linear tiling usually won't support mip maps
// Only set mip map count if optimal tiling is used
viewCreateInfo.subresourceRange.levelCount = (useStaging) ? mipLevels : 1;
viewCreateInfo.image = image;
Util.CheckResult(vkCreateImageView(device.LogicalDevice, &viewCreateInfo, null, out view));
// Update descriptor image info member that can be used for setting up descriptor sets
updateDescriptor();
}
public VkResult CreateLogicalDevice(
VkPhysicalDeviceFeatures enabledFeatures,
NativeList <IntPtr> enabledExtensions,
bool useSwapChain = true,
VkQueueFlags requestedQueueTypes = VkQueueFlags.Graphics | VkQueueFlags.Compute)
{
// Desired queues need to be requested upon logical device creation
// Due to differing queue family configurations of Vulkan implementations this can be a bit tricky, especially if the application
// requests different queue types
using (NativeList <VkDeviceQueueCreateInfo> queueCreateInfos = new NativeList <VkDeviceQueueCreateInfo>())
{
float defaultQueuePriority = 0.0f;
// Graphics queue
if ((requestedQueueTypes & VkQueueFlags.Graphics) != 0)
{
QFIndices.Graphics = GetQueueFamilyIndex(VkQueueFlags.Graphics);
VkDeviceQueueCreateInfo queueInfo = new VkDeviceQueueCreateInfo();
queueInfo.sType = VkStructureType.DeviceQueueCreateInfo;
queueInfo.queueFamilyIndex = QFIndices.Graphics;
queueInfo.queueCount = 1;
queueInfo.pQueuePriorities = &defaultQueuePriority;
queueCreateInfos.Add(queueInfo);
}
else
{
QFIndices.Graphics = (uint)NullHandle;
}
// Dedicated compute queue
if ((requestedQueueTypes & VkQueueFlags.Compute) != 0)
{
QFIndices.Compute = GetQueueFamilyIndex(VkQueueFlags.Compute);
if (QFIndices.Compute != QFIndices.Graphics)
{
// If compute family index differs, we need an additional queue create info for the compute queue
VkDeviceQueueCreateInfo queueInfo = new VkDeviceQueueCreateInfo();
queueInfo.sType = VkStructureType.DeviceQueueCreateInfo;
queueInfo.queueFamilyIndex = QFIndices.Compute;
queueInfo.queueCount = 1;
queueInfo.pQueuePriorities = &defaultQueuePriority;
queueCreateInfos.Add(queueInfo);
}
}
else
{
// Else we use the same queue
QFIndices.Compute = QFIndices.Graphics;
}
// Dedicated transfer queue
if ((requestedQueueTypes & VkQueueFlags.Transfer) != 0)
{
QFIndices.Transfer = GetQueueFamilyIndex(VkQueueFlags.Transfer);
if (QFIndices.Transfer != QFIndices.Graphics && QFIndices.Transfer != QFIndices.Compute)
{
// If compute family index differs, we need an additional queue create info for the transfer queue
VkDeviceQueueCreateInfo queueInfo = new VkDeviceQueueCreateInfo();
queueInfo.sType = VkStructureType.DeviceQueueCreateInfo;
queueInfo.queueFamilyIndex = QFIndices.Transfer;
queueInfo.queueCount = 1;
queueInfo.pQueuePriorities = &defaultQueuePriority;
queueCreateInfos.Add(queueInfo);
}
}
else
{
// Else we use the same queue
QFIndices.Transfer = QFIndices.Graphics;
}
// Create the logical device representation
using (NativeList <IntPtr> deviceExtensions = new NativeList <IntPtr>(enabledExtensions))
{
if (useSwapChain)
{
// If the device will be used for presenting to a display via a swapchain we need to request the swapchain extension
deviceExtensions.Add(Strings.VK_KHR_SWAPCHAIN_EXTENSION_NAME);
}
VkDeviceCreateInfo deviceCreateInfo = VkDeviceCreateInfo.New();
deviceCreateInfo.queueCreateInfoCount = queueCreateInfos.Count;
deviceCreateInfo.pQueueCreateInfos = (VkDeviceQueueCreateInfo *)queueCreateInfos.Data.ToPointer();
deviceCreateInfo.pEnabledFeatures = &enabledFeatures;
if (deviceExtensions.Count > 0)
{
deviceCreateInfo.enabledExtensionCount = deviceExtensions.Count;
deviceCreateInfo.ppEnabledExtensionNames = (byte **)deviceExtensions.Data.ToPointer();
}
VkResult result = vkCreateDevice(PhysicalDevice, &deviceCreateInfo, null, out _logicalDevice);
if (result == VkResult.Success)
{
// Create a default command pool for graphics command buffers
CommandPool = CreateCommandPool(QFIndices.Graphics);
}
return(result);
}
}
}