3 files changed, 10 insertions, 8 deletions
diff --git a/include/gltf.hpp b/include/gltf.hpp
index 59189d4..2f7377a 100644
--- a/include/gltf.hpp
+++ b/include/gltf.hpp
@@ -18,7 +18,7 @@ struct node {
 struct raw_image {
     int32_t x;
     int32_t y;
-    int32_t n;
+    int32_t channels;
     uint8_t *data;
 };
 
diff --git a/include/vk-api.hpp b/include/vk-api.hpp
index 2318eff..b50e751 100644
--- a/include/vk-api.hpp
+++ b/include/vk-api.hpp
@@ -115,7 +115,7 @@ class vkapi {
 
         handle create_buffer(size_t data_size, VkBufferUsageFlags buffer_usage, uint32_t mem_usage);
         void copy_buffer(VkCommandBuffer cmd_buf, handle src, handle dst, size_t size);
-        void copy_buffer(VkCommandBuffer cmd_buf, handle src, handle dst, off_t buffer_offset = 0);
+        void copy_buffer(VkCommandBuffer cmd_buf, handle src, handle dst, size_t size, size_t buffer_offset = 0);
         void destroy_buffer(handle buffer);
 
 
diff --git a/include/vk-renderer.hpp b/include/vk-renderer.hpp
index 614569a..6c6d2f0 100644
--- a/include/vk-renderer.hpp
+++ b/include/vk-renderer.hpp
@@ -124,20 +124,22 @@ class vkrenderer {
 class RingBuffer {
     public:
 
-    static const off_t invalid_alloc = -1;
+    static const size_t invalid_alloc = -1;
 
     RingBuffer(size_t size);
 
-    [[nodiscard]]off_t alloc(size_t alloc_size) const {
-        assert(alloc_size > 0);
+    [[nodiscard]]size_t alloc(size_t alloc_size) {
+        assert(alloc_size > 0 && alloc_size <= buffer_size);
 
-        if (ptr + alloc_size < buffer_size) {
+        if (ptr <= buffer_size - alloc_size) {
+            ptr += alloc_size;
             return ptr;
         }
+
         return invalid_alloc;
     }
 
-    void write(void* data, off_t alloc_offset, size_t data_size) const {
+    void write(void* data, size_t alloc_offset, size_t data_size) const {
         auto api_buffer = vkrenderer::api.get_buffer(device_buffer);
 
         std::memcpy((uint8_t*)api_buffer.device_ptr + alloc_offset, data, data_size);
@@ -150,7 +152,7 @@ class RingBuffer {
     handle device_buffer;
 
     size_t buffer_size;
-    off_t ptr = 0;
+    size_t ptr = 0;
 };
 
 class Sampler {