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feat: Rename Gizmo material to UnlitFixedSize, and expose methods for using this material on other entities. Also exposes new methods for setting single float parameters.

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This commit is contained in:
Nick Fisher
2024-10-31 22:34:51 +08:00
parent 91d653b288
commit bfdda4a7cc
31 changed files with 1813 additions and 1634 deletions
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18
materials/gizmo.mat → materials/unlit_fixed_size.mat
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@@ -1,5 +1,5 @@
material {
name : Gizmo,
name : UnlitFixedSize,
parameters : [
{
type : mat4,
@@ -8,8 +8,13 @@
},
{
type : float4,
name : color,
name : baseColorFactor,
precision : low
},
{
type: float, // the number of world-space units between the camera and the (unscaled) gizmo
name: scale,
precision: low
}
],
depthWrite : true,
@@ -24,14 +29,13 @@
vertex {
void materialVertex(inout MaterialVertexInputs material) {
// we want to ensure the gizmo has the same size (in screen-space), no matter the distance from the camera
// we do this by scaling the model-space vertex positions by the distance from the camera
// the object should have the same size (in screen-space), no matter the distance from the camera
// scale the model-space vertex positions by the distance from the camera
vec4 modelSpace = getPosition();
vec4 worldSpace = getWorldFromModelMatrix() * modelSpace;
vec4 viewSpace = getViewFromWorldMatrix() * worldSpace;
float distanceFromCamera = length(viewSpace.xyz);
modelSpace.xyz *= (distanceFromCamera / 4.0f); // divide by 4 so that the size is equivalent to the camera being 4 world-space units away from the (unscaled) gizmo
modelSpace.xyz *= (distanceFromCamera / materialParams.scale);
worldSpace = getWorldFromModelMatrix() * modelSpace;
material.worldPosition = worldSpace;
@@ -44,7 +48,7 @@
fragment {
void material(inout MaterialInputs material) {
prepareMaterial(material);
material.baseColor = materialParams.color;
material.baseColor = materialParams.baseColorFactor;
}
}