fix: move light data from UBO to push constants — fixes std140 layout issue

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Root cause: GLSL std140 layout adds padding after mat4 for vec4 fields,
causing light data to be read at wrong offsets → NaN/artifacts.

Fix:
- UBO back to 64 bytes (mat4 vp only)
- Light data (pos + color, 32 bytes) sent via push constants at offset 64
- Two push constant ranges: Vertex (0-64, model) + Fragment (64-96, light)
- Both vertex and fragment shaders read from same push_constant block
- PBR shader fully restored with Cook-Torrance BRDF
- Dynamic point light follows physics ball

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This commit is contained in:

emil28092005

2026-06-18 19:53:45 +03:00

parent ad8a14a4f7

commit 1dde764342

7 changed files with 110 additions and 24 deletions

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src/Engine.Graphics.Vulkan/Shaders/triangle.vert.spv

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