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Fix editor grid gizmo when using Large Worlds

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This commit is contained in:
Wojtek Figat
2025-02-11 00:32:04 +01:00
parent 58090aa6d6
commit 3c091dc214
3 changed files with 13 additions and 14 deletions
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BIN
Content/Shaders/Editor/Grid.flax (Stored with Git LFS)
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14
Source/Editor/Gizmo/GridGizmo.cs
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@@ -19,12 +19,11 @@ namespace FlaxEditor.Gizmo
[StructLayout(LayoutKind.Sequential)]
private struct Data
{
public Matrix WorldMatrix;
public Matrix ViewProjectionMatrix;
public Float4 GridColor;
public Float3 ViewPos;
public float Far;
public Float3 Padding;
public Float3 ViewOrigin;
public float GridSize;
}
@@ -62,7 +61,6 @@ namespace FlaxEditor.Gizmo
Profiler.BeginEventGPU("Editor Grid");
var options = Editor.Instance.Options.Options;
Float3 camPos = renderContext.View.WorldPosition;
float gridSize = renderContext.View.Far + 20000;
// Lazy-init resources
@@ -97,10 +95,10 @@ namespace FlaxEditor.Gizmo
float y = 1.5f; // Add small bias to reduce Z-fighting with geometry at scene origin
var vertices = new Float3[]
{
new Float3(-gridSize + camPos.X, y, -gridSize + camPos.Z),
new Float3(gridSize + camPos.X, y, gridSize + camPos.Z),
new Float3(-gridSize + camPos.X, y, gridSize + camPos.Z),
new Float3(gridSize + camPos.X, y, -gridSize + camPos.Z),
new Float3(-gridSize, y, -gridSize),
new Float3(gridSize, y, gridSize),
new Float3(-gridSize, y, gridSize),
new Float3(gridSize, y, -gridSize),
};
fixed (Float3* ptr = vertices)
{
@@ -113,12 +111,12 @@ namespace FlaxEditor.Gizmo
{
var data = new Data();
Matrix.Multiply(ref renderContext.View.View, ref renderContext.View.Projection, out var viewProjection);
data.WorldMatrix = Matrix.Identity;
Matrix.Transpose(ref viewProjection, out data.ViewProjectionMatrix);
data.ViewPos = renderContext.View.WorldPosition;
data.GridColor = options.Viewport.ViewportGridColor;
data.Far = renderContext.View.Far;
data.GridSize = options.Viewport.ViewportGridViewDistance;
data.ViewOrigin = renderContext.View.Origin;
context.UpdateCB(cb, new IntPtr(&data));
}

9
Source/Shaders/Editor/Grid.shader
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@@ -8,12 +8,11 @@
#include "./Flax/Common.hlsl"
META_CB_BEGIN(0, Data)
float4x4 WorldMatrix;
float4x4 ViewProjectionMatrix;
float4 GridColor;
float3 ViewPos;
float Far;
float3 Padding;
float3 ViewOrigin;
float GridSize;
META_CB_END
@@ -46,8 +45,9 @@ META_VS_IN_ELEMENT(TEXCOORD, 0, R16G16_FLOAT, 1, ALIGN, PER_VERTEX, 0, true)
VertexOutput VS_Grid(ModelInput input)
{
VertexOutput output;
output.WorldPosition = mul(float4(input.Position.xyz, 1), WorldMatrix).xyz;
output.Position = mul(float4(input.Position.xyz, 1), ViewProjectionMatrix);
output.WorldPosition = input.Position.xyz + ViewOrigin;
float3 geoPosition = input.Position.xyz - float3(0, ViewOrigin.y, 0);
output.Position = mul(float4(geoPosition, 1), ViewProjectionMatrix);
return output;
}
@@ -139,6 +139,7 @@ float4 GetColor(float3 pos, float scale)
color = lerp(color, float4(1,0,0,1), l2);
color = lerp(color, float4(0,0,1,1), l1);
color *= dist;
color *= 1 - saturate(length(pos) - 600000); // Fade out when far from origin (60km)
return color;
}