/**
* 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 FromTextureAsset(
TextureAsset asset,
GraphicsDevice device,
VkImageUsageFlags imageUsageFlags = VkImageUsageFlags.Sampled,
VkImageLayout imageLayout = VkImageLayout.ShaderReadOnlyOptimal)
{
VkFormat format = VkFormat.Undefined;
KtxFile tex2D = asset.GetTexture();
format = GlFormatToVulkanFormat.vkGetFormatFromOpenGLInternalFormat(tex2D.Header.GlInternalFormat, tex2D.Header.GlFormat, tex2D.Header.GlType);
width = tex2D.Header.PixelWidth;
height = tex2D.Header.PixelHeight;
if (height == 0)
{
height = width;
}
mipLevels = tex2D.Header.NumberOfMipmapLevels;
this.imageLayout = imageLayout;
this.format = format;
this.device = device;
// Get device properites for the requested texture format
VkFormatProperties formatProperties;
vkGetPhysicalDeviceFormatProperties(device.physicalDevice, format, out formatProperties);
VkMemoryAllocateInfo memAllocInfo = Initializers.memoryAllocateInfo();
VkMemoryRequirements memReqs;
// 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.device, &imageCreateInfo, null, out image));
vkGetImageMemoryRequirements(device.device, image, &memReqs);
memAllocInfo.allocationSize = memReqs.size;
memory = device.memoryAllocator.Allocate(memReqs.size, memReqs.alignment, memReqs.memoryTypeBits, false);
Util.CheckResult(vkBindImageMemory(device.device, image, memory.vkDeviceMemory, memory.offset));
//memAllocInfo.memoryTypeIndex = device.vulkanDevice.getMemoryType(memReqs.memoryTypeBits, VkMemoryPropertyFlags.DeviceLocal);
//Util.CheckResult(vkAllocateMemory(device.device, &memAllocInfo, null, out deviceMemory));
//Util.CheckResult(vkBindImageMemory(device.device, image, deviceMemory, 0));
TransferDataKtx(tex2D);
CreateSampler();
CreateView();
// Update descriptor image info member that can be used for setting up descriptor sets
UpdateDescriptor();
}