50 lines
1.7 KiB
Plaintext
50 lines
1.7 KiB
Plaintext
material {
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name : UnlitFixedSize,
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parameters : [
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{
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type : float4,
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name : baseColorFactor,
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precision : low
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},
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{
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type: float, // the number of world-space units between the camera and the (unscaled) gizmo
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name: scale,
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precision: low
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}
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],
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depthWrite : true,
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depthCulling : false,
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shadingModel : unlit,
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blending: transparent,
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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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// the object should have the same size (in screen-space), no matter the distance from the camera
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// scale the model-space vertex positions by the distance from the camera
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vec4 modelSpace = getPosition();
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vec4 worldSpace = getWorldFromModelMatrix() * modelSpace;
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vec4 viewSpace = getViewFromWorldMatrix() * worldSpace;
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float distanceFromCamera = length(viewSpace.xyz);
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modelSpace.xyz *= (distanceFromCamera / materialParams.scale);
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worldSpace = getWorldFromModelMatrix() * modelSpace;
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material.worldPosition = worldSpace;
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vec4 clipSpace = getClipFromWorldMatrix() * worldSpace;
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clipSpace.z = 0.99f;
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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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material.baseColor = materialParams.baseColorFactor;
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}
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}
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