[chore]: MASSIVE refactor + more vulkan bs

1 files changed, 41 insertions, 0 deletions

diff --git a/src/platform/vulkan/vulkan_context.h b/src/platform/vulkan/vulkan_context.h
new file mode 100644
index 0000000..de57c90
--- /dev/null
+++ b/src/platform/vulkan/vulkan_context.h
@@ -0,0 +1,41 @@
+#pragma once
+
+// Pure-C++ interface to the Vulkan backend (no vulkan.h leaks into the rest of
+// the engine; the implementation lives in VulkanContext.cpp). On macOS Vulkan
+// runs through MoltenVK (Vulkan -> Metal).
+namespace Donut
+{
+    class VulkanContext
+    {
+    public:
+        VulkanContext();
+        ~VulkanContext();
+
+        // Creates the instance, picks a physical device, and creates the logical
+        // device + graphics queue. Returns false (and logs) on failure.
+        auto init() -> bool;
+        auto shutdown() -> void;
+
+        // Phase 1 verification: renders a known clear colour into an offscreen
+        // image and reads it back, confirming instance -> device -> render pass
+        // -> command buffer -> submit -> read-back all work end to end.
+        auto self_test_clear() -> bool;
+
+        // Phase 2/3 verification: builds a graphics pipeline from Slang-compiled
+        // SPIR-V and draws a full-screen gradient triangle into the offscreen
+        // image, confirming the SPIR-V -> pipeline -> draw path works.
+        auto self_test_triangle() -> bool;
+
+        // B-3: renders the geodesic (black hole) fragment shader through Vulkan
+        // into an offscreen image and writes it to pngPath. Exercises UBOs,
+        // descriptor sets, a cubemap sampler and the geodesic pipeline.
+        auto render_geodesic(const char* pngPath) -> bool;
+
+    private:
+        struct Impl;
+        Impl* m_impl = nullptr;
+    };
+
+    // Convenience one-shot: init() + self_test_clear() + shutdown(). Logs results.
+    auto vulkan_self_test() -> bool;
+}