private void createUniformBuffers(VkContext context)
{
var bufferSize = Marshal.SizeOf <UniformBufferObject>();
var usageFlags = Vk.BufferUsageFlags.UniformBuffer;
var memProps = Vk.MemoryPropertyFlags.HostVisible
| Vk.MemoryPropertyFlags.HostCoherent;
var buffers = new BufferWithMemory[this.wrapper.ImageCapacity];
for (int i = 0; i < this.wrapper.ImageCapacity; i++)
{
try {
buffers[i] = VkHelper.CreateBuffer(context, bufferSize, usageFlags,
memProps, this.wrapper.SharingMode);
} catch (Vk.ResultException result) {
throw new VkException($"An error occurred while creating uniform buffer {i}.", result);
}
}
this.wrapper.UniformBuffers = new Vk.Buffer[this.wrapper.ImageCapacity];
this.wrapper.UniformBuffersMemory = new Vk.DeviceMemory[this.wrapper.ImageCapacity];
for (int i = 0; i < this.wrapper.ImageCapacity; i++)
{
this.wrapper.UniformBuffers[i] = buffers[i].Buffer;
this.wrapper.UniformBuffersMemory[i] = buffers[i].Memory;
}
}
private static void SetupUniformMatrices()
{
Matrix4 projectionMatrix =
new Matrix4(
1.0f, 0.0f, 0.0f, 0.0f,
0.0f, -1.0f, 0.0f, 0.0f,
0.0f, 0.0f, 0.5f, 0.0f,
0.0f, 0.0f, 0.5f, 1.0f)
* Matrix4.CreatePerspectiveFieldOfView((float)Math.PI / 4, Context.SurfaceWidth / (float)Context.SurfaceHeight, 0.1f, 100.0f);
VulkanBase.Camera.Position = new Vector3(0.0f, 10f, 0.0f);
VulkanBase.Camera.Rotation = new Vector3(0, (float)Math.PI / 2f, 0);
Matrix4 viewMatrix = VulkanBase.Camera.CalculateViewMatrix();
uint bufferSize = graphicsPipeline.ShaderUniformSets[0].GetSize();
Matrix4[] matrices = new Matrix4[]
{
projectionMatrix,
viewMatrix
};
uniformBuffer = Context.BufferManager.CreateBuffer(BufferUsageFlags.UniformBuffer, bufferSize, matrices);
uniformDescriptorSet = graphicsPipeline.CreateDescriptorSet(0, 0, uniformBuffer);
}
public DescriptorSet CreateDescriptorSet(int setIndex, int binding, BufferWithMemory buffer)
{
ValidateDiscriporPool();
DescriptorSetLayout descriptorSetLayout = DescriptorSetLayouts[setIndex];
ShaderUniformSet shaderUniformSet = ShaderUniformSets[setIndex];
DescriptorSet descriptorSet = VContext.Instance.device.AllocateDescriptorSets(
new DescriptorSetAllocateInfo()
{
DescriptorPool = VContext.Instance.descriptorPool,
SetLayouts = new DescriptorSetLayout[]
{
descriptorSetLayout
}
}
).First();
ShaderUniform shaderUniformWithCorrectBinding = shaderUniformSet.ShaderUniforms.Where(su => su.Binding == binding).First();
VContext.Instance.device.UpdateDescriptorSet(
new WriteDescriptorSet()
{
DescriptorType = shaderUniformWithCorrectBinding.DescriptorType,
DstBinding = (uint)shaderUniformWithCorrectBinding.Binding,
DstSet = descriptorSet,
BufferInfo = new DescriptorBufferInfo[]
{
new DescriptorBufferInfo()
{
Buffer = buffer.Buffer,
Offset = 0,
Range = buffer.Size,
}
}
},
null
);
return(descriptorSet);
}
public BufferviewWithMemory(BufferWithMemory bufferWithMemory)
{
Buffer = bufferWithMemory.Buffer;
Memory = bufferWithMemory.Memory;
Size = bufferWithMemory.Size;
}
