Emil_Shanaty/Cortex_Engine
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d6939e9efa35baa667bd84b8b82ad74a2e9fd40a
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8 Commits
Author SHA1 Message Date
emil28092005 d6939e9efa fix: video without UI + correct colors 
1. No UI in video: end render pass before ImGui, capture, start new
   render pass with loadOp=LOAD for ImGui, end again. Video captures
   only the 3D scene.

2. Acid colors fixed: swapchain format changed from B8G8R8A8_SRGB to
   B8G8R8A8_UNORM. SRGB format stores gamma-compressed values that
   vkCmdCopyImageToBuffer reads raw — FFmpeg treated them as linear
   causing acid colors. UNORM stores linear values, copy gives linear
   data, FFmpeg bgra→yuv420p conversion is correct.
 2026-06-19 09:13:04 +03:00
emil28092005 ab1a2d05c3 fix: enable imageCubeArray feature + transition all 24 shadow layers 
Two validation errors fixed:
1. imageCubeArray feature not enabled → added VkPhysicalDeviceImageCubeArrayFeatures
   to device creation chain (pNext: cubeArray → sync2 → dynamicRendering)
2. Shadow layers 18-23 in UNDEFINED layout → transition ALL 24 layers
   (MaxShadowLights * 6) instead of only numShadowLights * 6
   Descriptor references all 24 layers via CubeArray view
 2026-06-19 08:59:22 +03:00
emil28092005 4f3810010a feat: push constants + UBO descriptor sets — rotating triangle with VP matrix 
- Push constants: rotation angle (float) sent to vertex shader via vkCmdPushConstants
- UBO + descriptor sets: VP matrix (mat4) in uniform buffer, bound via VkDescriptorSet
- New Vulkan functions: vkCreateDescriptorSetLayout, vkCreateDescriptorPool,
  vkAllocateDescriptorSets, vkUpdateDescriptorSets, vkCmdBindDescriptorSets,
  vkCmdPushConstants
- New structs: VkPushConstantRange, VkDescriptorSetLayoutBinding,
  VkDescriptorSetLayoutCreateInfo, VkDescriptorPoolCreateInfo,
  VkDescriptorPoolSize, VkDescriptorSetAllocateInfo, VkWriteDescriptorSet,
  VkDescriptorBufferInfo
- Per-frame UBO buffers (HOST_VISIBLE|HOST_COHERENT, 64 bytes each)
- Perspective projection + look-at camera (static, no ECS yet)
- Cleaned up debug logging in VulkanContext
- Zero validation errors
 2026-06-18 01:59:41 +03:00
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 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
emil28092005 dd105ea4af chore: remove all graphics backends (Raylib, OpenTK, Vulkan/Silk.NET) — prepare for pure Vulkan P/Invoke rewrite 2026-06-17 22:12:51 +03:00
emil28092005 fb6e26a268 feat: modular HAL, Raylib backend, PBR shading, textures, 60 unit tests 
- Replace hardcoded SDL3 windowing with IWindow/IInputState/Key abstractions
- Each render backend owns its window (Raylib GLFW, SDL3 for Vulkan)
- Raylib backend: DrawModelEx, custom GLSL shader with Fresnel, ACES
  tonemapping, gamma correction, hemisphere ambient
- Fix backface culling, mesh memory (NativeMemory.Alloc), texture loading
- Camera controllers use backend-agnostic Key enum (inverted yaw/strafe)
- Demo scene: 8 cubes, 7 spheres, torus knot OBJ with checker texture
- Extract ProceduralMesh + MeshMath from Program.cs to Engine.Graphics
- Vulkan backend deferred (compiles, untested, IWindow-compatible)
- 60 unit tests: ObjLoader, camera controllers, AiCommandProcessor,
  RenderBackendFactory, Timing, ProceduralMesh, MeshMath, Transform
- AGENTS.md for opencode integration
 2026-06-17 13:49:12 +03:00