Multiplex streaming buffer contents on Vulkan

[libs/gl.git] / source / backends / vulkan / buffer_backend.cpp

diff --git a/source/backends/vulkan/buffer_backend.cpp b/source/backends/vulkan/buffer_backend.cpp
index 548f0a51b97e6420c2a92ff2567d275378fc79eb..5439548f886fd1d81ba0ac16181f12c4a213f28f 100644 (file)
--- a/source/backends/vulkan/buffer_backend.cpp
+++ b/source/backends/vulkan/buffer_backend.cpp
@@ -37,7 +37,7 @@ void VulkanBuffer::allocate()
 
        VkBufferCreateInfo buffer_info = { };
        buffer_info.sType = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO;
-       buffer_info.size = self.size;
+       buffer_info.size = self.get_total_size();
        buffer_info.usage = VK_BUFFER_USAGE_TRANSFER_SRC_BIT|VK_BUFFER_USAGE_TRANSFER_DST_BIT|VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT|
                VK_BUFFER_USAGE_INDEX_BUFFER_BIT|VK_BUFFER_USAGE_VERTEX_BUFFER_BIT;
        buffer_info.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
@@ -72,6 +72,12 @@ void VulkanBuffer::sub_data(size_t off, size_t sz, const void *d)
        tq.finalize_transfer(staging);
 }
 
+unsigned VulkanBuffer::get_multiplicity() const
+{
+       BufferUsage usage = static_cast<const Buffer *>(this)->usage;
+       return (usage==STREAMING ? device.get_n_frames_in_flight() : 1);
+}
+
 bool VulkanBuffer::can_map() const
 {
        return static_cast<const Buffer *>(this)->usage==STREAMING;