staging buffer for GN_STATIC_DRAW

rendering_api/vulkan/src/buffers/vulkan_buffer.c

@@ -13,12 +13,12 @@ case GN_VERTEX_BUFFER: return VK_BUFFER_USAGE_VERTEX_BUFFER_BIT;
 gnReturnCode VkCreateBuffer(
     VkBuffer* buffer, VkDeviceMemory* memory, gnBufferInfo info,
     VkDevice device, VkPhysicalDevice physcialDevice,
-    VkMemoryPropertyFlags flags
+    VkMemoryPropertyFlags flags, VkBufferUsageFlags usage
 ) {
     VkBufferCreateInfo bufferInfo = {
         .sType = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO,
         .size = info.size,
-        .usage = vkGryphnBufferType(info.type),
+        .usage = usage,
         .sharingMode = VK_SHARING_MODE_EXCLUSIVE
     };
 
@@ -52,30 +52,77 @@ gnReturnCode VkCreateBuffer(
     return GN_SUCCESS;
 }
 
+void VkCopyBuffer(VkBuffer source, VkBuffer destination, size_t size, VkCommandPool pool, VkDevice device, VkQueue queue) {
+    VkCommandBufferAllocateInfo allocInfo = {
+        .sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO,
+        .level = VK_COMMAND_BUFFER_LEVEL_PRIMARY,
+        .commandPool = pool,
+        .commandBufferCount = 1
+    };
+
+    VkCommandBuffer commandBuffer;
+    vkAllocateCommandBuffers(device, &allocInfo, &commandBuffer);
+
+    VkCommandBufferBeginInfo beginInfo = {
+        .sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO,
+        .flags = VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT
+    };
+    vkBeginCommandBuffer(commandBuffer, &beginInfo);
+
+
+    VkBufferCopy copyRegion = {
+      .size = size
+    };
+    vkCmdCopyBuffer(commandBuffer, source, destination, 1, &copyRegion);
+    vkEndCommandBuffer(commandBuffer);
+
+    VkSubmitInfo submitInfo = {
+        .sType = VK_STRUCTURE_TYPE_SUBMIT_INFO,
+        .commandBufferCount = 1,
+        .pCommandBuffers = &commandBuffer
+    };
+
+    vkQueueSubmit(queue, 1, &submitInfo, VK_NULL_HANDLE);
+    vkQueueWaitIdle(queue);
+}
+
 gnReturnCode gnCreateBufferFn(gnBufferHandle buffer, gnOutputDeviceHandle device, gnBufferInfo info) {
     buffer->buffer = malloc(sizeof(struct gnPlatformBuffer_t));
-    gnReturnCode createdBuffer = VkCreateBuffer(
+    VkBufferUsageFlags usage = vkGryphnBufferType(info.type);
-        &buffer->buffer->buffer, &buffer->buffer->bufferMemory,
-        info, device->outputDevice->device, device->physicalDevice.physicalDevice->device,
-        VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT
-    );
-
     if (info.usage == GN_STATIC_DRAW) {
         gnReturnCode createdBuffer = VkCreateBuffer(
             &buffer->buffer->stagingBuffer, &buffer->buffer->stagingBufferMemory,
             info, device->outputDevice->device, device->physicalDevice.physicalDevice->device,
-            VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT
+            VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT, VK_BUFFER_USAGE_TRANSFER_SRC_BIT
         );
+        usage |= VK_BUFFER_USAGE_TRANSFER_DST_BIT;
         buffer->buffer->useStagingBuffer = gnTrue;
     }
 
+    gnReturnCode createdBuffer = VkCreateBuffer(
+        &buffer->buffer->buffer, &buffer->buffer->bufferMemory,
+        info, device->outputDevice->device, device->physicalDevice.physicalDevice->device,
+        VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT, usage
+    );
+
+
     return GN_SUCCESS;
 }
 void gnBufferDataFn(gnBufferHandle buffer, size_t dataSize, void* data) {
     void* bufferData;
+    if (buffer->buffer->useStagingBuffer) {
+        vkMapMemory(buffer->device->outputDevice->device, buffer->buffer->stagingBufferMemory, 0, dataSize, 0, &bufferData);
+        memcpy(bufferData, data, dataSize);
+        vkUnmapMemory(buffer->device->outputDevice->device, buffer->buffer->stagingBufferMemory);
+        VkCopyBuffer(
+            buffer->buffer->stagingBuffer, buffer->buffer->buffer, dataSize,
+            buffer->device->outputDevice->transferCommandPool, buffer->device->outputDevice->device,
+            buffer->device->outputDevice->transferQueue);
+    } else {
         vkMapMemory(buffer->device->outputDevice->device, buffer->buffer->bufferMemory, 0, dataSize, 0, &bufferData);
         memcpy(bufferData, data, dataSize);
         vkUnmapMemory(buffer->device->outputDevice->device, buffer->buffer->bufferMemory);
+    }
 }
 void gnDestroyBufferFn(gnBufferHandle buffer) {
     if (buffer->buffer->useStagingBuffer == gnTrue) {