From 336ca81adf8b22aab6aa4ee6c1d66fbff436ca8d Mon Sep 17 00:00:00 2001
From: Lea <lea@janderedev.xyz>
Date: Tue, 11 Jul 2023 16:17:25 +0200
Subject: [PATCH] messing around with the beacon shader

---
 .../shaders/core/rendertype_beacon_beam.fsh   | 39 +++++++++++++++++++
 .../shaders/core/rendertype_beacon_beam.json  | 26 +++++++++++++
 2 files changed, 65 insertions(+)
 create mode 100644 pack/assets/minecraft/shaders/core/rendertype_beacon_beam.fsh
 create mode 100644 pack/assets/minecraft/shaders/core/rendertype_beacon_beam.json

diff --git a/pack/assets/minecraft/shaders/core/rendertype_beacon_beam.fsh b/pack/assets/minecraft/shaders/core/rendertype_beacon_beam.fsh
new file mode 100644
index 0000000..ab794d6
--- /dev/null
+++ b/pack/assets/minecraft/shaders/core/rendertype_beacon_beam.fsh
@@ -0,0 +1,39 @@
+#version 150
+
+#moj_import <fog.glsl>
+
+uniform sampler2D Sampler0;
+
+uniform mat4 ProjMat;
+uniform vec4 ColorModulator;
+uniform float FogStart;
+uniform float FogEnd;
+uniform vec4 FogColor;
+uniform vec4 Pink;
+
+in vec4 vertexColor;
+in vec2 texCoord0;
+
+out vec4 fragColor;
+
+void main() {
+    vec4 color = texture(Sampler0, texCoord0);
+    color *= vertexColor * ColorModulator;
+    float fragmentDistance = -ProjMat[3].z / ((gl_FragCoord.z) * -2.0 + 1.0 - ProjMat[2].z);
+
+    float nuts = 0.0;
+
+    /* this is an excuse for me to play around with shaders but i guess it also looks kinda cool */
+
+    if (fragmentDistance > 10) {
+        nuts = 1.0;
+    } else {
+        nuts = fragmentDistance / 10;
+    }
+
+    nuts /= 3;
+    nuts += 0.25;
+
+    color.rgb = mix(color.rgb, Pink.rgb, nuts);
+    fragColor = linear_fog(color, fragmentDistance, FogStart, FogEnd, FogColor);
+}
diff --git a/pack/assets/minecraft/shaders/core/rendertype_beacon_beam.json b/pack/assets/minecraft/shaders/core/rendertype_beacon_beam.json
new file mode 100644
index 0000000..6e8155b
--- /dev/null
+++ b/pack/assets/minecraft/shaders/core/rendertype_beacon_beam.json
@@ -0,0 +1,26 @@
+{
+    "blend": {
+        "func": "add",
+        "srcrgb": "srcalpha",
+        "dstrgb": "1-srcalpha"
+    },
+    "vertex": "rendertype_beacon_beam",
+    "fragment": "rendertype_beacon_beam",
+    "attributes": [
+        "Position",
+        "Color",
+        "UV0"
+    ],
+    "samplers": [
+        { "name": "Sampler0" }
+    ],
+    "uniforms": [
+        { "name": "ModelViewMat", "type": "matrix4x4", "count": 16, "values": [ 1.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0, 0.0, 0.0, 0.0, 1.0 ] },
+        { "name": "ProjMat", "type": "matrix4x4", "count": 16, "values": [ 1.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0, 0.0, 0.0, 0.0, 1.0 ] },
+        { "name": "ColorModulator", "type": "float", "count": 4, "values": [ 1.0, 1.0, 1.0, 1.0 ] },
+        { "name": "FogStart", "type": "float", "count": 1, "values": [ 0.0 ] },
+        { "name": "FogEnd", "type": "float", "count": 1, "values": [ 1.0 ] },
+        { "name": "FogColor", "type": "float", "count": 4, "values": [ 0.0, 0.0, 0.0, 0.0 ] },
+        { "name": "Pink", "type": "float", "count": 4, "values": [ 0.957, 0.722, 0.859, 1 ] }
+    ]
+}