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CircularBuffer: Allow users to bind their own memory to our buffer.

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This commit is contained in:
Dr. Chat
2016-08-01 16:30:28 -05:00
parent 22794902f3
commit 99090e0a22
5 changed files with 86 additions and 27 deletions
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11
src/xenia/ui/vulkan/circular_buffer.h
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@@ -27,7 +27,8 @@ namespace vulkan {
// ends of the buffer), where trailing older allocations are freed after use.
class CircularBuffer {
public:
CircularBuffer(VulkanDevice* device);
CircularBuffer(VulkanDevice* device, VkBufferUsageFlags usage,
VkDeviceSize capacity, VkDeviceSize alignment = 256);
~CircularBuffer();
struct Allocation {
@@ -42,10 +43,12 @@ class CircularBuffer {
std::shared_ptr<Fence> fence;
};
bool Initialize(VkDeviceSize capacity, VkBufferUsageFlags usage,
VkDeviceSize alignment = 256);
bool Initialize(VkDeviceMemory memory, VkDeviceSize offset);
bool Initialize();
void Shutdown();
void GetBufferMemoryRequirements(VkMemoryRequirements* reqs);
VkDeviceSize alignment() const { return alignment_; }
VkDeviceSize capacity() const { return capacity_; }
VkBuffer gpu_buffer() const { return gpu_buffer_; }
@@ -66,12 +69,14 @@ class CircularBuffer {
void Scavenge();
private:
// All of these variables are relative to gpu_base
VkDeviceSize capacity_ = 0;
VkDeviceSize alignment_ = 0;
VkDeviceSize write_head_ = 0;
VkDeviceSize read_head_ = 0;
VulkanDevice* device_;
bool owns_gpu_memory_ = false;
VkBuffer gpu_buffer_ = nullptr;
VkDeviceMemory gpu_memory_ = nullptr;
VkDeviceSize gpu_base_ = 0;