first commit

shaderpacks/Reimagined - High/shaders/lib/materials/specificMaterials/terrain/lava.glsl

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+#if !defined IPBR_COMPAT_MODE && defined GBUFFERS_TERRAIN && !defined GBUFFERS_COLORWHEEL
+    // Tweak to prevent the animation of lava causing brightness pulsing
+    vec3 avgColor = vec3(0.0);
+    ivec2 itexCoordC = ivec2(midCoord * atlasSize + 0.0001);
+    for (int x = -8; x < 8; x += 2) {
+        for (int y = -8; y < 8; y += 2) {
+            avgColor += texelFetch(tex, itexCoordC + ivec2(x, y), 0).rgb;
+        }
+    }
+    color.rgb /= max(GetLuminance(avgColor) * 0.0390625, 0.001);
+#else
+    color.rgb *= 0.86;
+#endif
+noDirectionalShading = true;
+lmCoordM = vec2(0.0);
+emission = GetLuminance(color.rgb) * 7.48 + 0.5;
+
+vec3 worldPos = playerPos + cameraPosition;
+vec2 lavaPos = (floor(worldPos.xz * 16.0) + worldPos.y * 32.0) * 0.000666;
+vec2 wind = vec2(frameTimeCounter * 0.012, 0.0);
+
+#ifdef NETHER
+    float noiseSample = texture2DLod(noisetex, lavaPos + wind, 0.0).g;
+    noiseSample = noiseSample - 0.5;
+    noiseSample *= 0.1;
+    color.rgb = pow(color.rgb, vec3(1.0 + noiseSample));
+#endif
+
+vec3 previousLavaColor = color.rgb;
+
+#ifdef SOUL_SAND_VALLEY_OVERHAUL_INTERNAL
+    color.rgb = changeColorFunction(color.rgb, 3.0, colorSoul, inSoulValley);
+    color.rgb = mix(color.rgb, (color.rgb - 0.5) * 1.35 + 0.5, inSoulValley); // increase contrast
+#endif
+#ifdef PURPLE_END_FIRE_INTERNAL
+    color.rgb = changeColorFunction(color.rgb, 2.5, colorEndBreath * 1.4, 1.0);
+    color.rgb = (color.rgb - 0.5) * 1.3 + 0.5;
+#endif
+
+vec3 lavaNoiseColor = color.rgb;
+
+#if LAVA_VARIATION > 0
+    if (BLOCK_LAVA_DEFINE) { // Lava
+        #include "/lib/materials/specificMaterials/terrain/lavaNoise.glsl"
+        color.rgb = lavaNoiseColor;
+    }
+#else
+    maRecolor = vec3(clamp(pow2(pow2(pow2(smoothstep1(emission * 0.28)))), 0.12, 0.4) * 1.3) * vec3(0.25, vec2(0.175));
+    if (LAVA_TEMPERATURE != 0.0) maRecolor += LAVA_TEMPERATURE * 0.5 - 0.2;
+    lavaNoiseColor *= 1.3;
+#endif
+
+vec3 maxLavaColor = max(previousLavaColor, lavaNoiseColor);
+vec3 minLavaColor = min(previousLavaColor, lavaNoiseColor);
+
+#if RAIN_PUDDLES >= 1
+    noPuddles = 1.0;
+#endif
+
+#include "/lib/materials/specificMaterials/terrain/lavaEdge.glsl"
+
+emission *= LAVA_EMISSION;