public PlatformRenderTexture2D(PlatformRenderContext context, Format format, int width, int height, TextureParams textureParams)
: base(context, format, width, height, false, true, textureParams)
{
colorFormat = VulkanHelper.GetVKFormat(format);
CreateDepthStencilBuffer();
CreateRenderPass();
CreateFramebuffer();
}
private void Create(bool renderTarget)
{
var vkFormat = VulkanHelper.GetVKFormat(format);
var usage =
SharpVulkan.ImageUsageFlags.TransferSource |
SharpVulkan.ImageUsageFlags.TransferDestination |
SharpVulkan.ImageUsageFlags.Sampled;
if (renderTarget)
{
usage |= SharpVulkan.ImageUsageFlags.ColorAttachment;
}
var tiling = SharpVulkan.ImageTiling.Optimal;
var imageCreateInfo = new SharpVulkan.ImageCreateInfo {
StructureType = SharpVulkan.StructureType.ImageCreateInfo,
ImageType = SharpVulkan.ImageType.Image2D,
Usage = usage,
Format = vkFormat,
Extent = new SharpVulkan.Extent3D((uint)width, (uint)height, 1),
MipLevels = (uint)levelCount,
ArrayLayers = 1,
Samples = SharpVulkan.SampleCountFlags.Sample1,
SharingMode = SharpVulkan.SharingMode.Exclusive,
InitialLayout = SharpVulkan.ImageLayout.Undefined,
Tiling = tiling
};
image = context.Device.CreateImage(ref imageCreateInfo);
var memoryPropertyFlags = SharpVulkan.MemoryPropertyFlags.DeviceLocal;
if (IsPvrtc1Format(Format))
{
memoryPropertyFlags |= SharpVulkan.MemoryPropertyFlags.HostVisible | SharpVulkan.MemoryPropertyFlags.HostCoherent;
}
memory = context.MemoryAllocator.Allocate(image, memoryPropertyFlags, tiling);
var viewCreateInfo = new SharpVulkan.ImageViewCreateInfo {
StructureType = SharpVulkan.StructureType.ImageViewCreateInfo,
ViewType = SharpVulkan.ImageViewType.Image2D,
Image = image,
Format = vkFormat,
Components = SharpVulkan.ComponentMapping.Identity,
SubresourceRange = new SharpVulkan.ImageSubresourceRange(SharpVulkan.ImageAspectFlags.Color)
};
imageView = context.Device.CreateImageView(ref viewCreateInfo);
var memoryBarrier = new SharpVulkan.ImageMemoryBarrier {
StructureType = SharpVulkan.StructureType.ImageMemoryBarrier,
Image = image,
OldLayout = SharpVulkan.ImageLayout.Undefined,
NewLayout = SharpVulkan.ImageLayout.ShaderReadOnlyOptimal,
SourceAccessMask = SharpVulkan.AccessFlags.None,
DestinationAccessMask = SharpVulkan.AccessFlags.ShaderRead,
SubresourceRange = new SharpVulkan.ImageSubresourceRange(SharpVulkan.ImageAspectFlags.Color)
};
context.EndRenderPass();
context.EnsureCommandBuffer();
context.CommandBuffer.PipelineBarrier(
SharpVulkan.PipelineStageFlags.TopOfPipe, SharpVulkan.PipelineStageFlags.VertexShader | SharpVulkan.PipelineStageFlags.FragmentShader,
SharpVulkan.DependencyFlags.None, 0, null, 0, null, 1, &memoryBarrier);
}