revert to vanilla assets

public/assets/minecraft/shaders/core/block.vsh

@@ -0,0 +1,28 @@
+#version 330
+
+#moj_import <minecraft:fog.glsl>
+#moj_import <minecraft:dynamictransforms.glsl>
+#moj_import <minecraft:projection.glsl>
+#moj_import <minecraft:sample_lightmap.glsl>
+
+in vec3 Position;
+in vec4 Color;
+in vec2 UV0;
+in ivec2 UV2;
+
+uniform sampler2D Sampler2;
+
+out float sphericalVertexDistance;
+out float cylindricalVertexDistance;
+out vec4 vertexColor;
+out vec2 texCoord0;
+
+void main() {
+    vec3 pos = Position + ModelOffset;
+    gl_Position = ProjMat * ModelViewMat * vec4(pos, 1.0);
+
+    sphericalVertexDistance = fog_spherical_distance(pos);
+    cylindricalVertexDistance = fog_cylindrical_distance(pos);
+    vertexColor = Color * sample_lightmap(Sampler2, UV2);
+    texCoord0 = UV0;
+}