57 lines
1.7 KiB
Plaintext
57 lines
1.7 KiB
Plaintext
material {
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name : Grid,
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parameters : [
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{
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type : float,
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name : maxDistance
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},
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{
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type : float3,
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name : color
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}
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],
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depthWrite : false,
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depthCulling : true,
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shadingModel : unlit,
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blending: opaque,
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variantFilter : [ skinning, shadowReceiver, vsm ],
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culling: none,
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instanced: false,
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vertexDomain: object
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}
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vertex {
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void materialVertex(inout MaterialVertexInputs material) {
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vec4 modelSpace = getPosition();
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vec4 worldSpace = getWorldFromModelMatrix() * modelSpace;
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vec4 clipSpace = getClipFromWorldMatrix() * worldSpace;
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clipSpace.z = 0.02f;
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material.worldPosition = getWorldFromClipMatrix() * clipSpace;
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}
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}
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fragment {
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void material(inout MaterialInputs material) {
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prepareMaterial(material);
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// Convert world position to view space
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float4 viewPos = getViewFromWorldMatrix() * float4(getWorldPosition(), 1.0);
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// Calculate distance in view space (camera is at 0,0,0 in view space)
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float distance = length(viewPos.xz);
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// Discard fragment if it's too far from the camera
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if (distance > materialParams.maxDistance) {
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material.baseColor = float4(0.0);
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} else {
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material.baseColor = float4(materialParams.color, 1.0);
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// Optional: fade out as we approach maxDistance
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float fadeStart = materialParams.maxDistance * 0.8;
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if (distance > fadeStart) {
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float fade = 1.0 - (distance - fadeStart) / (materialParams.maxDistance - fadeStart);
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material.baseColor.a = fade;
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}
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}
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}
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} |