add getters for the swapchain width and height

CMakeLists.txt

@@ -31,10 +31,6 @@ if(GFX_BUILD_EXAMPLES)
     set(GFX_EXAMPLES_TO_BUILD "triangle;multiBuffer;imgui_usage;mc_cube;scop" CACHE STRING "Semicolon separated list of example names to build")
 endif()
 
-if (GFX_USE_UTILSCPP OR GFX_USE_MATH)
-    message(FATAL_ERROR "Not yet implemented")
-endif()
-
 enable_language(CXX)
 
 if(APPLE AND GFX_BUILD_METAL)

include/Graphics/Swapchain.hpp

@@ -37,6 +37,9 @@ class Swapchain
     Swapchain(const Swapchain&) = delete;
     Swapchain(Swapchain&&) = delete;
 
+    virtual uint32_t width() const = 0;
+    virtual uint32_t height() const = 0;
+
     virtual std::shared_ptr<Drawable> nextDrawable() = 0;
 
     virtual ~Swapchain() = default;

src/Metal/MetalSwapchain.hpp

@@ -30,11 +30,16 @@ class MetalSwapchain : public Swapchain
 
     MetalSwapchain(const MetalDevice&, const Swapchain::Descriptor&);
 
+    inline uint32_t width() const override { return m_width; }
+    inline uint32_t height() const override { return m_height; }
+
     std::shared_ptr<Drawable> nextDrawable() override;
 
     ~MetalSwapchain() override = default;
 
 private:
+    uint32_t m_width;
+    uint32_t m_height;
     CAMetalLayer* m_mtlLayer;
 
 public:

src/Metal/MetalSwapchain.mm

@@ -20,7 +20,9 @@
 namespace gfx
 {
 
-MetalSwapchain::MetalSwapchain(const MetalDevice& device, const Swapchain::Descriptor& desc) { @autoreleasepool
+MetalSwapchain::MetalSwapchain(const MetalDevice& device, const Swapchain::Descriptor& desc)
+    : m_width(desc.width)
+    , m_height(desc.height) { @autoreleasepool
 {
     assert(desc.surface);
     auto* mtlSurface = dynamic_cast<MetalSurface*>(desc.surface);

src/Vulkan/VulkanSwapchain.cpp

@@ -39,13 +39,12 @@ VulkanSwapchain::VulkanSwapchain(const VulkanDevice* device, const Descriptor& d
     std::vector<vk::PresentModeKHR> surfacePresentModes = vkPhysicalDevice.getSurfacePresentModesKHR(vkSurface);
     assert(std::ranges::any_of(surfacePresentModes, [&desc](auto& m){return m == toVkPresentModeKHR(desc.presentMode);}));
 
-    vk::Extent2D extent;
     if (surfaceCapabilities.currentExtent.width != std::numeric_limits<uint32_t>::max())
-        extent = surfaceCapabilities.currentExtent;
+        m_extent = surfaceCapabilities.currentExtent;
     else
     {
-        extent.width = std::clamp(desc.width, surfaceCapabilities.minImageExtent.width, surfaceCapabilities.maxImageExtent.width);
-        extent.height = std::clamp(desc.height, surfaceCapabilities.minImageExtent.height, surfaceCapabilities.maxImageExtent.height);
+        m_extent.width = std::clamp(desc.width, surfaceCapabilities.minImageExtent.width, surfaceCapabilities.maxImageExtent.width);
+        m_extent.height = std::clamp(desc.height, surfaceCapabilities.minImageExtent.height, surfaceCapabilities.maxImageExtent.height);
     }
 
 
@@ -54,7 +53,7 @@ VulkanSwapchain::VulkanSwapchain(const VulkanDevice* device, const Descriptor& d
         .setMinImageCount(desc.imageCount)
         .setImageFormat(toVkFormat(desc.pixelFormat))
         .setImageColorSpace(toVkColorSpaceKHR(desc.pixelFormat))
-        .setImageExtent(extent)
+        .setImageExtent(m_extent)
         .setImageArrayLayers(1)
         .setImageUsage(vk::ImageUsageFlagBits::eColorAttachment)
         .setPreTransform(surfaceCapabilities.currentTransform)
@@ -77,7 +76,7 @@ VulkanSwapchain::VulkanSwapchain(const VulkanDevice* device, const Descriptor& d
     s_oldSwapchains[&vkSurface] = *m_vkSwapchain;
 
     Texture::Descriptor swapchainImageTexDesc = {
-        .width = extent.width, .height = extent.height,
+        .width = m_extent.width, .height = m_extent.height,
         .pixelFormat = desc.pixelFormat,
         .usages = TextureUsage::colorAttachment,
         .storageMode = ResourceStorageMode::deviceLocal

src/Vulkan/VulkanSwapchain.hpp

@@ -31,12 +31,16 @@ class VulkanSwapchain : public Swapchain
 
     VulkanSwapchain(const VulkanDevice*, const Swapchain::Descriptor&);
 
+    inline uint32_t width() const override { return m_extent.width; }
+    inline uint32_t height() const override { return m_extent.height; }
+
     std::shared_ptr<Drawable> nextDrawable() override;
 
     ~VulkanSwapchain() override = default;
 
 private:
     const VulkanDevice* m_device;
+    vk::Extent2D m_extent;
 
     vk::SwapchainKHR* m_vkSwapchain;
     std::vector<std::shared_ptr<SwapchainImage>> m_swapchainImages;