We got a skybox

destrum/src/Graphics/GfxDevice.cpp

@@ -15,6 +15,7 @@
 #include <destrum/Graphics/Init.h>
 
 #include "destrum/Graphics/imageLoader.h"
+#include "destrum/Util/GameState.h"
 #include "spdlog/spdlog.h"
 
 GfxDevice::GfxDevice(): imageCache(*this) {
@@ -141,7 +142,7 @@ void GfxDevice::init(SDL_Window* window, const std::string& appName, bool vSync)
     //         "white texture",
     //         &pixel);
     // }
-
+    GameState::GetInstance().SetGfxDevice(this);
 }
 
 void GfxDevice::recreateSwapchain(int width, int height) {
@@ -164,6 +165,10 @@ VkCommandBuffer GfxDevice::beginFrame() {
     return cmd;
 }
 
+VulkanImmediateExecutor& GfxDevice::GetImmediateExecuter() {
+    return executor;
+}
+
 void GfxDevice::endFrame(VkCommandBuffer cmd, const GPUImage& drawImage, const EndFrameProps& props) {
      // get swapchain image
     const auto [swapchainImage, swapchainImageIndex] = swapchain.acquireNextImage(getCurrentFrameIndex());
@@ -426,7 +431,7 @@ GPUImage GfxDevice::createImageRaw(
 
     if (createInfo.isCubemap) {
         assert(createInfo.numLayers % 6 == 0);
-        assert(!createInfo.mipMap);
+        // assert(!createInfo.mipMap);
         assert((createInfo.flags & VK_IMAGE_CREATE_CUBE_COMPATIBLE_BIT) != 0);
     }
 
@@ -503,16 +508,14 @@ GPUImage GfxDevice::createImageRaw(
 
 void GfxDevice::uploadImageData(const GPUImage& image, void* pixelData, std::uint32_t layer) const
 {
-    int numChannels = 4;
-    if (image.format == VK_FORMAT_R8_UNORM) {
-        // FIXME: support more types
-        numChannels = 1;
-    }
-    const auto dataSize =
-        image.extent.depth * image.extent.width * image.extent.height * numChannels;
+    VkDeviceSize dataSize =
+      VkDeviceSize(image.extent.depth) *
+      image.extent.width *
+      image.extent.height *
+      BytesPerTexel(image.format);
 
-    const auto uploadBuffer = createBuffer(dataSize, VK_BUFFER_USAGE_TRANSFER_SRC_BIT);
-    memcpy(uploadBuffer.info.pMappedData, pixelData, dataSize);
+    auto uploadBuffer = createBuffer(dataSize, VK_BUFFER_USAGE_TRANSFER_SRC_BIT);
+    memcpy(uploadBuffer.info.pMappedData, pixelData, size_t(dataSize));
 
     executor.immediateSubmit([&](VkCommandBuffer cmd) {
         assert(