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.

This commit is contained in:

emil28092005

2026-06-17 23:39:38 +03:00

parent 544f6b59c0

commit 749fbc8df4

16 changed files with 838 additions and 231 deletions

									
										imgui.ini
									
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				[Window][Cortex Engine Debug]

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