Create/Update assets for version 21w10a

assets/minecraft/shaders/include/_list.json

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+{"directories":[],"files":["fog.glsl","light.glsl","matrix.glsl","projection.glsl"]}

assets/minecraft/shaders/include/fog.glsl

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+#version 150
+
+vec4 linear_fog(vec4 inColor, float vertexDistance, float fogStart, float fogEnd, vec4 fogColor) {
+    if (vertexDistance <= fogStart) {
+        return inColor;
+    }
+
+    float fogValue = vertexDistance < fogEnd ? smoothstep(fogStart, fogEnd, vertexDistance) : 1.0;
+    return vec4(mix(inColor.rgb, fogColor.rgb, fogValue * fogColor.a), inColor.a);
+}
+
+float linear_fog_fade(float vertexDistance, float fogStart, float fogEnd) {
+    if (vertexDistance <= fogStart) {
+        return 1.0;
+    } else if (vertexDistance >= fogEnd) {
+        return 0.0;
+    }
+
+    return smoothstep(fogEnd, fogStart, vertexDistance);
+}

assets/minecraft/shaders/include/light.glsl

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+#version 150
+
+#define MINECRAFT_LIGHT_POWER   (0.6)
+#define MINECRAFT_AMBIENT_LIGHT (0.4)
+
+vec4 minecraft_mix_light(vec3 lightDir0, vec3 lightDir1, vec3 normal, vec4 color) {
+    lightDir0 = normalize(lightDir0);
+    lightDir1 = normalize(lightDir1);
+    float light0 = max(0.0, dot(lightDir0, normal));
+    float light1 = max(0.0, dot(lightDir1, normal));
+    float lightAccum = min(1.0, (light0 + light1) * MINECRAFT_LIGHT_POWER + MINECRAFT_AMBIENT_LIGHT);
+    return vec4(color.rgb * lightAccum, color.a);
+}

assets/minecraft/shaders/include/matrix.glsl

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+#version 150
+
+mat2 mat2_rotate_z(float radians) {
+    return mat2(
+        cos(radians), -sin(radians),
+        sin(radians), cos(radians)
+    );
+}

assets/minecraft/shaders/include/projection.glsl

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+#version 150
+
+vec4 projection_from_position(vec4 position) {
+    vec4 projection = position * 0.5;
+    projection.xy = vec2(projection.x + projection.w, projection.y + projection.w);
+    projection.zw = position.zw;
+    return projection;
+}