Emil_Shanaty/Cortex_Engine
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2e0970e76920ded3fb71e11f2cced4896c3b8bbc
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4 Commits
Author SHA1 Message Date
emil28092005 2e0970e769 feat: rebuild Vulkan renderer from scratch — pure P/Invoke triangle (Vulkan 1.3) 
- Complete rewrite of Engine.Graphics.Vulkan with pure P/Invoke (no wrapper libs)
- Vulkan 1.3: dynamic rendering (vkCmdBeginRendering/vkCmdEndRendering),
  synchronization2 (vkQueueSubmit2, vkCmdPipelineBarrier2)
- Split types into VulkanHandles.cs, VulkanEnums.cs, VulkanStructs.cs
- Staging buffer → device-local vertex buffer pattern
- Correct swapchain semaphore indexing (per-image, not per-frame-in-flight)
- VK_EXT_debug_utils debug messenger with validation layer fallback
- Dynamic viewport/scissor (no pipeline recreation on resize)
- Simplified Program.cs to triangle-only rendering
- Removed old Silk.NET renderer, ImGui, PBR shaders, screenshot code
- Updated VULKAN_IMPLEMENTATION_PLAN.md with full architecture decisions
 2026-06-18 01:49:25 +03:00
emil28092005 749fbc8df4 feat: ImGui integration + real screenshot capture via Vulkan 
ImGui:
- ImGui.NET 1.91.6.1 NuGet package
- VulkanImGui: font texture upload, ImGui pipeline (blending, no depth), vertex/index buffer streaming
- GLSL 450 ImGui shaders (vert: scale/translate push constants, frag: font texture sampler)
- Compiled to SPIR-V via @webgpu/glslang
- Debug overlay: FPS, camera position, entity count, light list
- 1600+ FPS with ImGui active

Screenshot:
- vkCmdCopyImageToBuffer embedded in main command buffer
- Layout transition PresentSrcKHR→TransferSrcOptimal→PresentSrcKHR
- Deferred read: staging buffer read on next frame after fence
- BMP format written directly to FileStream (row by row)
- All 16 camera tour screenshots captured (1280x720x32bpp)

All 66 tests pass.
 2026-06-17 23:39:38 +03:00
emil28092005 544f6b59c0 feat: real screenshot capture — BMP from swapchain image via vkCmdCopyImageToBuffer 
- Added vkCmdCopyImageToBuffer to P/Invoke layer
- Screenshot embedded in main command buffer (barrier PresentSrcKHR→TransferSrc, copy, barrier back)
- Deferred read: staging buffer read on next frame after fence signaled
- BMP format written directly to FileStream (row by row, avoids large heap allocations)
- BGRA→BGRA direct copy for B8G8R8A8 swapchain format
- All 16 camera tour screenshots captured successfully (1280x720x32bpp)
- 66/66 tests pass
 2026-06-17 23:27:58 +03:00
emil28092005 80238b08f5 feat: pure Vulkan P/Invoke renderer — no wrappers, SDL3 window, SPIR-V shaders 
- Engine.Graphics: restored interfaces (IRenderContext, IRenderer, RenderBackendFactory),
  loaders (ObjLoader, GltfLoader), ProceduralMesh, MeshMath, SceneSerializer
- Engine.Graphics.Vulkan: pure P/Invoke to libvulkan.so.1/vulkan-1.dll
  - VulkanNative: library loading, function pointer loading via vkGetInstanceProcAddr
  - Vk: static function cache for ~80 Vulkan functions, all delegate types
  - VulkanTypes: ~50 structs, ~20 enums matching Vulkan C headers
  - VulkanContext: instance, physical device, logical device, surface, memory types
  - VulkanSwapchain: swapchain, image views, depth image, render pass, framebuffers
  - VulkanPipeline: graphics pipeline, descriptor set layout, shader modules
  - VulkanBuffer: vertex/index/uniform buffers, staging, memory allocation
  - VulkanRenderer: command buffers, sync (semaphores/fences), render loop, 2 frames in flight
  - GLSL 450 shaders: PBR lighting (Fresnel, ACES, gamma), directional+point lights
  - Compiled to SPIR-V via @webgpu/glslang WASM
- CortexEngine.App: switched to vulkan backend, removed Raylib/OpenTK/ImGui refs
- Tests: all 66 pass (ObjLoader, MeshMath, ProceduralMesh, SceneSerializer, etc.)
- Camera tour: 16 poses, screenshots captured, clean shutdown
 2026-06-17 23:03:24 +03:00