3 files changed, 121 insertions, 0 deletions
diff --git a/src/main/resources/assets/minecraft/shaders/post/fade_in_blur.json b/src/main/resources/assets/minecraft/shaders/post/fade_in_blur.json
new file mode 100644
index 0000000..3214a10
--- /dev/null
+++ b/src/main/resources/assets/minecraft/shaders/post/fade_in_blur.json
@@ -0,0 +1,67 @@
+{
+  "targets": [
+    "swap"
+  ],
+  "passes": [
+    {
+      "name": "fade_in_blur",
+      "intarget": "minecraft:main",
+      "outtarget": "swap",
+      "uniforms": [
+        {
+          "name": "BlurDir",
+          "values": [ 1.0, 0.0 ]
+        },
+        {
+          "name": "Radius",
+          "values": [ 2.0 ]
+        }
+      ]
+    },
+    {
+      "name": "fade_in_blur",
+      "intarget": "swap",
+      "outtarget": "minecraft:main",
+      "uniforms": [
+        {
+          "name": "BlurDir",
+          "values": [ 0.0, 1.0 ]
+        },
+        {
+          "name": "Radius",
+          "values": [ 2.0 ]
+        }
+      ]
+    },
+    {
+      "name": "fade_in_blur",
+      "intarget": "minecraft:main",
+      "outtarget": "swap",
+      "uniforms": [
+        {
+          "name": "BlurDir",
+          "values": [ 1.0, 0.0 ]
+        },
+        {
+          "name": "Radius",
+          "values": [ 2.0 ]
+        }
+      ]
+    },
+    {
+      "name": "fade_in_blur",
+      "intarget": "swap",
+      "outtarget": "minecraft:main",
+      "uniforms": [
+        {
+          "name": "BlurDir",
+          "values": [ 0.0, 1.0 ]
+        },
+        {
+          "name": "Radius",
+          "values": [ 2.0 ]
+        }
+      ]
+    }
+  ]
+}
diff --git a/src/main/resources/assets/minecraft/shaders/program/fade_in_blur.fsh b/src/main/resources/assets/minecraft/shaders/program/fade_in_blur.fsh
new file mode 100644
index 0000000..5539f39
--- /dev/null
+++ b/src/main/resources/assets/minecraft/shaders/program/fade_in_blur.fsh
@@ -0,0 +1,33 @@
+#version 120
+
+uniform sampler2D DiffuseSampler;
+
+varying vec2 texCoord;
+varying vec2 oneTexel;
+
+uniform vec2 InSize;
+
+uniform vec2 BlurDir;
+uniform float Radius;
+uniform float Progress;
+
+void main() {
+    vec4 blurred = vec4(0.0);
+    float totalStrength = 0.0;
+    float totalAlpha = 0.0;
+    float totalSamples = 0.0;
+    float progRadius = floor(Radius * Progress);
+    for(float r = -progRadius; r <= progRadius; r += 1.0) {
+        vec4 sample = texture2D(DiffuseSampler, texCoord + oneTexel * r * BlurDir);
+
+		// Accumulate average alpha
+        totalAlpha = totalAlpha + sample.a;
+        totalSamples = totalSamples + 1.0;
+
+		// Accumulate smoothed blur
+        float strength = 1.0 - abs(r / progRadius);
+        totalStrength = totalStrength + strength;
+        blurred = blurred + sample;
+    }
+    gl_FragColor = vec4(blurred.rgb / (progRadius * 2.0 + 1.0), totalAlpha);
+}
diff --git a/src/main/resources/assets/minecraft/shaders/program/fade_in_blur.json b/src/main/resources/assets/minecraft/shaders/program/fade_in_blur.json
new file mode 100644
index 0000000..3d09d02
--- /dev/null
+++ b/src/main/resources/assets/minecraft/shaders/program/fade_in_blur.json
@@ -0,0 +1,21 @@
+{
+  "blend": {
+    "func": "add",
+    "srcrgb": "one",
+    "dstrgb": "zero"
+  },
+  "vertex": "sobel",
+  "fragment": "fade_in_blur",
+  "attributes": [ "Position" ],
+  "samplers": [
+    { "name": "DiffuseSampler" }
+  ],
+  "uniforms": [
+    { "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": "InSize",      "type": "float",     "count": 2,  "values": [ 1.0, 1.0 ] },
+    { "name": "OutSize",     "type": "float",     "count": 2,  "values": [ 1.0, 1.0 ] },
+    { "name": "BlurDir",     "type": "float",     "count": 2,  "values": [ 1.0, 1.0 ] },
+    { "name": "Radius",      "type": "float",     "count": 1,  "values": [ 5.0 ] },
+    { "name": "Progress",    "type": "float",     "count": 1,  "values": [ 0.0 ] }
+  ]
+}