dofdev/snake
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hole flip trick, with box mat chain

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This commit is contained in:
ethan merchant 2024-11-10 23:49:00 -05:00
parent 470fa38107
commit 5f49d94910
4 changed files with 24 additions and 21 deletions
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4
Assets/backbox.hlsl
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@ -45,6 +45,6 @@ float4 ps(psIn input) : SV_TARGET {
// Fresnel effect calculation
float fresnel = 1.0 - saturate(dot(-view_dir, input.normal));
fresnel = pow(fresnel, 5.0); // Adjust power for different falloff rates
return float4(fresnel * input.color.rgb, input.color.a);
float value = 0.5;
return float4(fresnel * input.color.rgb * value, input.color.a);
}

BIN
Assets/meshes/assets.glb (Stored with Git LFS)
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Binary file not shown.

4
Platforms/Android/AndroidManifest.xml
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@ -2,8 +2,8 @@
<manifest
xmlns:android="http://schemas.android.com/apk/res/android"
package="com.dofdev.snake"
android:versionCode="13"
android:versionName="1.21"
android:versionCode="14"
android:versionName="1.24"
android:installLocation="auto"
>
<uses-sdk android:minSdkVersion="29" android:targetSdkVersion="32" />

33
src/Arts.cs
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@ -9,7 +9,7 @@ static class Arts
static Dictionary<string, Mesh> meshes = new();
static Material mat_mono = new Material("mono.hlsl");
static Material mat_unlit = new Material("unlit.hlsl");
// [!] have backfaces on a mat run a separate backbox/face shader]? *to try and reduce drawcalls
static Material mat_box = new Material("unlit.hlsl");
static Material mat_backbox = new Material("backbox.hlsl");
static Material mat_justcolor = new Material("justcolor.hlsl");
@ -30,10 +30,13 @@ static class Arts
}
}
mat_backbox.FaceCull = Cull.Front;
mat_backbox.Transparency = Transparency.Add;
mat_backbox.DepthTest = DepthTest.LessOrEq;
mat_backbox.DepthWrite = false;
mat_box.Chain = mat_backbox;
}
public static void Frame()
@ -62,11 +65,10 @@ static class Arts
// box
Hierarchy.Push(Mono.box_pose.ToMatrix(Mono.box_scale));
meshes["InsideOut"].Draw(mat_unlit, Matrix.Identity);
// meshes["InsideOut"].Draw(mat_unlit, Matrix.Identity);
meshes["InsideOut"].Draw(
mat_backbox,
Matrix.Identity,
new Color(0.2f, 0.2f, 0.2f)
mat_box,
Matrix.Identity
);
meshes["Corrugation"].Draw(
Mono.in_dist.state ? mat_justcolor : mat_unlit,
@ -161,18 +163,19 @@ static class Arts
Maths.abs(hole.Value.y) * Maths.sign(hole.Key.y),
Maths.abs(hole.Value.z) * Maths.sign(hole.Key.z)
);
Vec3 hole_world_normal = Mono.box_pose.orientation * hole_normal;
Vec3 hole_world = Mono.box_pose.ToMatrix(Mono.box_scale) * V.XYZ(
hole.Key.x - hole.Value.x * 0.5f,
hole.Key.y - hole.Value.y * 0.5f,
hole.Key.z - hole.Value.z * 0.5f
);
// Vec3 hole_world_normal = Mono.box_pose.orientation * hole_normal;
// Vec3 hole_world = Mono.box_pose.ToMatrix(Mono.box_scale) * V.XYZ(
// hole.Key.x - hole.Value.x * 0.5f,
// hole.Key.y - hole.Value.y * 0.5f,
// hole.Key.z - hole.Value.z * 0.5f
// );
// Vec3 cam_dir = (Rig.head.orientation * Vec3.Forward);
Vec3 hole_view_dir = Vec3.Direction(hole_world, Rig.head.position);
bool back_hole = Vec3.Dot(hole_world_normal, hole_view_dir) < 0.0;
// Vec3 hole_view_dir = Vec3.Direction(hole_world, Rig.head.position);
// bool back_hole = Vec3.Dot(hole_world_normal, hole_view_dir) < 0.0;
bool hole_flip = Vec3.Dot(hole_normal, hole.Value.ToVec3) < 0.0;
meshes["Hole"].Draw(
back_hole ? mat_backbox : mat_unlit,
meshes[hole_flip ? "Hole" : "HoleFlip"].Draw(
mat_box,
Matrix.TRS(
hole.Key.ToVec3,
Quat.LookDir(hole.Value.ToVec3),