Emil_Shanaty/Cortex_Engine
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feat: adjustable ambient lighting via ImGui sliders

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- SceneUBO expanded: added vec4 ambientColor at offset 400
- UBO size: 448 → 464 bytes
- Fragment shader: ambient from UBO instead of hardcoded constant
- VulkanRenderer: AmbientColor property (default 0.01, 0.01, 0.02)
- ImGui: R/G/B sliders for ambient (0.0-0.5 range)
- Packed at offset 400 after 4 shadowParams (64 bytes at 336)
This commit is contained in:
emil28092005
2026-06-19 09:34:09 +03:00
parent 9555de60ef
commit 74dcc45543
7 changed files with 15 additions and 2 deletions
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src/CortexEngine.App/Program.cs
+7
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@@ -281,14 +281,21 @@ class Program
var bias = vkRenderer.ShadowBias;
var sampleRadius = vkRenderer.ShadowSampleRadius;
var farPlane = vkRenderer.ShadowFarPlane;
var ambient = vkRenderer.AmbientColor;
ImGui.SliderFloat("Shadow Bias", ref bias, 0.0001f, 0.1f, "%.4f");
ImGui.SliderFloat("Sample Radius", ref sampleRadius, 0.001f, 0.1f, "%.4f");
ImGui.SliderFloat("Far Plane", ref farPlane, 10.0f, 120.0f, "%.1f");
ImGui.Separator();
ImGui.Text("Ambient Light");
ImGui.SliderFloat("Ambient R", ref ambient.X, 0.0f, 0.5f, "%.3f");
ImGui.SliderFloat("Ambient G", ref ambient.Y, 0.0f, 0.5f, "%.3f");
ImGui.SliderFloat("Ambient B", ref ambient.Z, 0.0f, 0.5f, "%.3f");
vkRenderer.ShadowBias = bias;
vkRenderer.ShadowSampleRadius = sampleRadius;
vkRenderer.ShadowFarPlane = farPlane;
vkRenderer.AmbientColor = ambient;
ImGui.Text($"Current: bias={bias:F4} radius={sampleRadius:F4} far={farPlane:F1}");