Differential D359 Diff 6552 binaries/data/mods/public/shaders/glsl/water_high.fs

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binaries/data/mods/public/shaders/glsl/water_high.fs

Show First 20 Lines • Show All 111 Lines • ▼ Show 20 Lines	float IntersectBox (in Ray ray, in vec3 minimum, in vec3 maximum)
vec3 MAX = max ( OMAX, OMIN );		vec3 MAX = max ( OMAX, OMIN );
return min ( MAX.x, min ( MAX.y, MAX.z ) );		return min ( MAX.x, min ( MAX.y, MAX.z ) );
}		}

vec3 get_fog(vec3 color)		vec3 get_fog(vec3 color)
{		{
float density = fogParams.x;		float density = fogParams.x;
float maxFog = fogParams.y;		float maxFog = fogParams.y;

const float LOG2 = 1.442695;		const float LOG2 = 1.442695;
float z = gl_FragCoord.z / gl_FragCoord.w;		float z = gl_FragCoord.z / gl_FragCoord.w;
float fogFactor = exp2(-density * density * z * z * LOG2);		float fogFactor = exp2(-density * density * z * z * LOG2);

fogFactor = fogFactor * (1.0 - maxFog) + maxFog;		fogFactor = fogFactor * (1.0 - maxFog) + maxFog;

fogFactor = clamp(fogFactor, 0.0, 1.0);		fogFactor = clamp(fogFactor, 0.0, 1.0);

return mix(fogColor, color, fogFactor);		return mix(fogColor, color, fogFactor);
}		}

void main()		void main()
{		{
float fresnel;		float fresnel;
vec2 reflCoords, refrCoords;		vec2 reflCoords, refrCoords;
vec3 reflColor, refrColor, specular;		vec3 reflColor, refrColor, specular;
float losMod, reflMod;		float losMod;

// Calculate water normals.		// Calculate water normals.

float wavyEffect = waveParams1.r;		float wavyEffect = waveParams1.r;
float baseScale = waveParams1.g;		float baseScale = waveParams1.g;
float flattenism = waveParams1.b;		float flattenism = waveParams1.b;
float baseBump = waveParams1.a;		float baseBump = waveParams1.a;
float BigMovement = waveParams2.b;		float BigMovement = waveParams2.b;

// This method uses 60 animated water frames. We're blending between each two frames		// This method uses 60 animated water frames. We're blending between each two frames
// Scale the normal textures by waviness so that big waviness means bigger waves.		// Scale the normal textures by waviness so that big waviness means bigger waves.
vec3 ww1 = texture2D(normalMap, (normalCoords.st + normalCoords.zw * BigMovementwaviness/10.0) (baseScale - waviness/wavyEffect)).xzy;		vec3 ww1 = texture2D(normalMap, (normalCoords.st + normalCoords.zw * BigMovementwaviness/10.0) (baseScale - waviness/wavyEffect)).xzy;
vec3 ww2 = texture2D(normalMap2, (normalCoords.st + normalCoords.zw * BigMovementwaviness/10.0) (baseScale - waviness/wavyEffect)).xzy;		vec3 ww2 = texture2D(normalMap2, (normalCoords.st + normalCoords.zw * BigMovementwaviness/10.0) (baseScale - waviness/wavyEffect)).xzy;
vec3 wwInterp = mix(ww1, ww2, moddedTime) - vec3(0.5,0.0,0.5);		vec3 wwInterp = mix(ww1, ww2, moddedTime) - vec3(0.5,0.0,0.5);

ww1.x = wwInterp.x * WindCosSin.x - wwInterp.z * WindCosSin.y;		ww1.x = wwInterp.x * WindCosSin.x - wwInterp.z * WindCosSin.y;
ww1.z = wwInterp.x * WindCosSin.y + wwInterp.z * WindCosSin.x;		ww1.z = wwInterp.x * WindCosSin.y + wwInterp.z * WindCosSin.x;
ww1.y = wwInterp.y;		ww1.y = wwInterp.y;

// Flatten them based on waviness.		// Flatten them based on waviness.
vec3 n = normalize(mix(vec3(0.0,1.0,0.0), ww1, clamp(baseBump + fwaviness/flattenism,0.0,1.0)));		vec3 n = normalize(mix(vec3(0.0,1.0,0.0), ww1, clamp(baseBump + fwaviness/flattenism,0.0,1.0)));

#if USE_FANCY_EFFECTS		#if USE_FANCY_EFFECTS
vec4 fancyeffects = texture2D(waterEffectsTexNorm, gl_FragCoord.xy/screenSize);		vec4 fancyeffects = texture2D(waterEffectsTexNorm, gl_FragCoord.xy/screenSize);
n = mix(vec3(0.0,1.0,0.0), n,0.5 + waterInfo.r/2.0);		n = mix(vec3(0.0,1.0,0.0), n,0.5 + waterInfo.r/2.0);
n.xz = mix(n.xz, fancyeffects.rb,fancyeffects.a/2.0);		n.xz = mix(n.xz, fancyeffects.rb,fancyeffects.a/2.0);
#else		#else
n = mix(vec3(0.0,1.0,0.0), n, 0.5 + waterInfo.r/2.0);		n = mix(vec3(0.0,1.0,0.0), n, 0.5 + waterInfo.r/2.0);
#endif		#endif

n = vec3(-n.x,n.y,-n.z); // The final wave normal vector.		n = vec3(-n.x,n.y,-n.z); // The final wave normal vector.

// How perpendicular to the normal our view is. Used for fresnel.		// How perpendicular to the normal our view is. Used for fresnel.
float ndotv = clamp(dot(n, v),0.0,1.0);		float ndotv = clamp(dot(n, v),0.0,1.0);

// Fresnel for "how much reflection vs how much refraction".		// Fresnel for "how much reflection vs how much refraction".
fresnel = clamp(((pow(1.1 - ndotv, 2.0)) * 1.5), 0.1, 0.75); // Approximation. I'm using 1.1 and not 1.0 because it causes artifacts, see #1714		fresnel = clamp(((pow(1.1 - ndotv, 2.0)) * 1.5), 0.1, 0.75); // Approximation. I'm using 1.1 and not 1.0 because it causes artifacts, see #1714

// Specular lighting vectors		// Specular lighting vectors
vec3 specVector = reflect(sunDir, ww1);		vec3 specVector = reflect(sunDir, ww1);

// pow is undefined for null or negative values, except on intel it seems.		// pow is undefined for null or negative values, except on intel it seems.
float specIntensity = clamp(pow(abs(dot(specVector, v)), 100.0), 0.0, 1.0);		float specIntensity = clamp(pow(abs(dot(specVector, v)), 100.0), 0.0, 1.0);

specular = specIntensity1.2 mix(vec3(1.5), sunColor,0.5);		specular = specIntensity1.2 mix(vec3(1.5), sunColor,0.5);

		#if USE_SHADOWS_ON_WATER && USE_SHADOW
		float shadow = get_shadow(vec4(v_shadow.xy, v_shadow.zw));
		#endif

		// for refraction, we want to adjust the value by v.y slightly otherwise it gets too different between "from above" and "from the sides".
		// And it looks weird (again, we are not used to seeing water from above).
		float fixedVy = max(v.y,0.01);

		float murky = mix(200.0,0.1,pow(murkiness,0.25));
		vladislavbelovUnsubmitted Not Done Inline Actions Some missing spaces here and above. vladislavbelov: Some missing spaces here and above.

float depth;		float depth;
#if USE_REAL_DEPTH		#if USE_REAL_DEPTH
// Don't change these two. They should match the values in the config (TODO: dec uniforms).		// Don't change these two. They should match the values in the config (TODO: dec uniforms).
float zNear = 2.0;		float zNear = 2.0;
float zFar = 4096.0;		float zFar = 4096.0;

// Okay so here it's a tad complicated. I want to distort the depth buffer along the waves for a nice effect.		// Compute real depth at the target point.
// However this causes a problem around underwater objects (think fishes): on some pixels, the depth will be seen as the same as the fishes'
// and the color will be grass ( cause I don't distort the refraction coord by exactly the same stuff)
// Also, things like towers with the feet in water would cause the buffer to see the depth as actually negative in some places.
// So what I do is first check the undistorted depth, then I compare with the distorted value and fix.
float water_b = gl_FragCoord.z;		float water_b = gl_FragCoord.z;
float water_n = 2.0 * water_b - 1.0;		float water_n = 2.0 * water_b - 1.0;
float waterDBuffer = 2.0 * zNear * zFar / (zFar + zNear - water_n * (zFar - zNear));		float waterDBuffer = 2.0 * zNear * zFar / (zFar + zNear - water_n * (zFar - zNear));

float undisto_z_b = texture2D(depthTex, (gl_FragCoord.xy) / screenSize).x;		float undisto_z_b = texture2D(depthTex, (gl_FragCoord.xy) / screenSize).x;
float undisto_z_n = 2.0 * undisto_z_b - 1.0;		float undisto_z_n = 2.0 * undisto_z_b - 1.0;
float waterDepth_undistorted = (2.0 * zNear * zFar / (zFar + zNear - undisto_z_n * (zFar - zNear)) - waterDBuffer);		float waterDepth_undistorted = (2.0 * zNear * zFar / (zFar + zNear - undisto_z_n * (zFar - zNear)) - waterDBuffer);

vec2 depthCoord = clamp((gl_FragCoord.xy) / screenSize - n.xz*clamp( waterDepth_undistorted/400.0,0.0,0.05) , 0.001, 0.999);		// Set depth to the depth at the undistorted point.
		depth = waterDepth_undistorted;
float z_b = texture2D(depthTex, depthCoord).x;

if (z_b < undisto_z_b)
z_b = undisto_z_b;
float z_n = 2.0 * z_b - 1.0;

depth = (2.0 * zNear * zFar / (zFar + zNear - z_n * (zFar - zNear)) - waterDBuffer);
#else		#else
		// fake depth computation: take the value at the vertex, add some if we are looking at a more oblique angle.
depth = waterDepth / (min(0.5,v.y)1.5min(0.5,v.y)*2.0);		depth = waterDepth / (min(0.5,v.y)1.5min(0.5,v.y)*2.0);
#endif		#endif

#if USE_FANCY_EFFECTS		#if USE_FANCY_EFFECTS
depth = max(depth,fancyeffects.a);		depth = max(depth,fancyeffects.a);
#endif		#endif

#if USE_SHADOWS_ON_WATER && USE_SHADOW
float shadow = get_shadow(vec4(v_shadow.xy, v_shadow.zw));
#endif

// for refraction, we want to adjust the value by v.y slightly otherwise it gets too different between "from above" and "from the sides".
// And it looks weird (again, we are not used to seeing water from above).
float fixedVy = max(v.y,0.01);

float murky = mix(200.0,0.1,pow(murkiness,0.25));

#if USE_REFRACTION		#if USE_REFRACTION
		// for refraction we want to distort more as depth goes down.
		// 1) compute a distortion based on depth at the pixel.
		// 2) Re-sample the depth at the target point
		// 3) Sample refraction texture

// distoFactor controls the amount of distortion relative to wave normals.		// distoFactor controls the amount of distortion relative to wave normals.
float distoFactor = 0.5 + clamp(depth/2.0,0.0,7.0);		float distoFactor = 0.5 + clamp(depth/2.0,0.0,7.0);

		#if USE_REAL_DEPTH
		vec2 depthCoord = clamp((gl_FragCoord.xy) / screenSize - n.xz * distoFactor / refractionCoords.z, 0.001, 0.999);
		float z_b = texture2D(depthTex, depthCoord).x;
		float z_n = 2.0 * z_b - 1.0;
		float newDepth = (2.0 * zNear * zFar / (zFar + zNear - z_n * (zFar - zNear)) - waterDBuffer);

		// try to correct for fish. In general they'd look weirder without this fix.
		if (depth > newDepth + 3.0)
		distoFactor /= 2.0; // this in general will not fall on the fish but still look distorted.
		else
		depth = newDepth;
		#endif

// Distort the texture coords under where the water is to simulate refraction.		// Distort the texture coords under where the water is to simulate refraction.
refrCoords = (0.5 * refractionCoords.xy - n.xz * distoFactor) / refractionCoords.z + 0.5;		refrCoords = (0.5 * refractionCoords.xy - n.xz * distoFactor) / refractionCoords.z + 0.5;
vec3 refColor = texture2D(refractionMap, refrCoords).rgb;		vec3 refColor = texture2D(refractionMap, refrCoords).rgb;

// Note, the refraction map is cleared using (255, 0, 0), so pixels outside of the water plane are pure red.		// Note, the refraction map is cleared using (255, 0, 0), so pixels outside of the water plane are pure red.
// If we get a pure red fragment, use an undistorted/less distorted coord instead.		// If we get a pure red fragment, use an undistorted/less distorted coord instead.
if (refColor.r > 0.999 && refColor.g < 0.001)
{
refrCoords = (0.5*refractionCoords.xy) / refractionCoords.z + 0.5;
refColor = texture2D(refractionMap, refrCoords).rgb;

if (refColor.r > 0.999 && refColor.g < 0.001)
fresnel = 1.0;
}
else
{
// blur the refraction map, distoring using n so that it looks more random than it really is		// blur the refraction map, distoring using n so that it looks more random than it really is
// and thus looks much better.		// and thus looks much better.
float blur = (0.3+clamp(n.x,-0.1,0.1))/refractionCoords.z;		float blur = (0.3+clamp(n.x,-0.1,0.1))/refractionCoords.z;

vec3 blurColor = texture2D(refractionMap, refrCoords + vec2(blur+n.x, blur+n.z)).rgb;		vec4 blurColor = vec4(refColor, 1.0);
blurColor += texture2D(refractionMap, refrCoords + vec2(-blur, blur+n.z)).rgb;
blurColor += texture2D(refractionMap, refrCoords + vec2(-blur, -blur+n.x)).rgb;		vec4 tex = texture2D(refractionMap, refrCoords + vec2(blur+n.x, blur+n.z));
blurColor += texture2D(refractionMap, refrCoords + vec2(blur+n.z, -blur)).rgb;		blurColor += vec4(tex.rgb * tex.a, tex.a);
blurColor /= 4.0;		tex = texture2D(refractionMap, refrCoords + vec2(-blur, blur+n.z));
		blurColor += vec4(tex.rgb * tex.a, tex.a);
		tex = texture2D(refractionMap, refrCoords + vec2(-blur, -blur+n.x));
		blurColor += vec4(tex.rgb * tex.a, tex.a);
		tex = texture2D(refractionMap, refrCoords + vec2(blur+n.z, -blur));
		blurColor += vec4(tex.rgb * tex.a, tex.a);
		blurColor /= blurColor.a;
float blurFactor = (distoFactor/7.0);		float blurFactor = (distoFactor/7.0);
refColor = (refColor + blurColor * blurFactor) / (1.0+blurFactor);		refColor = (refColor + blurColor.rgb * blurFactor) / (1.0+blurFactor);
}

// Apply water tint and murk color.		// Apply water tint and murk color.
float extFact = max(0.0,1.0 - (depth*fixedVy/murky));		float extFact = max(0.0,1.0 - (depth*fixedVy/murky));
float ColextFact = max(0.0,1.0 - (depth*fixedVy/murky));		float ColextFact = max(0.0,1.0 - (depth*fixedVy/murky));
vec3 colll = mix(refColor*tint,refColor,ColextFact);		vec3 colll = mix(refColor*tint,refColor,ColextFact);

refrColor = mix(color, colll, extFact);		refrColor = mix(color, colll, extFact);
#else		#else
// Apply water tint and murk color only.		// Apply water tint and murk color only.
float extFact = max(0.0,1.0 - (depth*fixedVy/murky));		float extFact = max(0.0,1.0 - (depth*fixedVy/murky));
float ColextFact = max(0.0,1.0 - (depth*fixedVy/murky));		float ColextFact = max(0.0,1.0 - (depth*fixedVy/murky));
vec3 colll = mix(color*tint,color,ColextFact);		vec3 colll = mix(color*tint,color,ColextFact);

refrColor = mix(color, colll, extFact);		refrColor = mix(color, colll, extFact);
#endif		#endif

#if USE_REFLECTION
// Reflections		// Reflections
// We use real reflections against the skybox, and distort a texture of objects closer.		// 3 level of settings:
		// -If a player has refraction and reflection disabled, we return a gradient of blue based on the Y component.
		// -If a player has refraction OR reflection, we return a reflection of the actual skybox used.
		// -If a player has reflection enabled, we also return a reflection of actual entities where applicable.

		float reflMod = 0.75;
vec3 eye = reflect(v,n);		vec3 eye = reflect(v,n);

		#if USE_REFLECTION \|\| USE_REFRACTION
		#if USE_REFLECTION
float refVY = clamp(v.y*2.0,0.05,1.0);		float refVY = clamp(v.y*2.0,0.05,1.0);

// Distort the reflection coords based on waves.		// Distort the reflection coords based on waves.
reflCoords = (0.5reflectionCoords.xy - 15.0 n.zx / refVY) / reflectionCoords.z + 0.5;		reflCoords = (0.5reflectionCoords.xy - 15.0 n.zx / refVY) / reflectionCoords.z + 0.5;
vec4 refTex = texture2D(reflectionMap, reflCoords);		vec4 refTex = texture2D(reflectionMap, reflCoords);

reflColor = refTex.rgb;		reflColor = refTex.rgb;

if (refTex.a < 0.99)		if (refTex.a < 0.99)
{		{
		#endif

// Calculate where we intersect with the skycube.		// Calculate where we intersect with the skycube.
Ray myRay = Ray(vec3(worldPos.x/4.0,worldPos.y,worldPos.z/4.0),eye);		Ray myRay = Ray(vec3(worldPos.x/4.0,worldPos.y,worldPos.z/4.0),eye);
vec3 start = vec3(-1500.0 + mapSize/2.0,-100.0,-1500.0 + mapSize/2.0);		vec3 start = vec3(-1500.0 + mapSize/2.0,-100.0,-1500.0 + mapSize/2.0);
vec3 end = vec3(1500.0 + mapSize/2.0,500.0,1500.0 + mapSize/2.0);		vec3 end = vec3(1500.0 + mapSize/2.0,500.0,1500.0 + mapSize/2.0);
float tmin = IntersectBox(myRay,start,end);		float tmin = IntersectBox(myRay,start,end);
vec4 newpos = vec4(-worldPos.x/4.0,worldPos.y,-worldPos.z/4.0,1.0) + vec4(eye * tmin,0.0) - vec4(-mapSize/2.0,worldPos.y,-mapSize/2.0,0.0);		vec4 newpos = vec4(-worldPos.x/4.0,worldPos.y,-worldPos.z/4.0,1.0) + vec4(eye * tmin,0.0) - vec4(-mapSize/2.0,worldPos.y,-mapSize/2.0,0.0);
newpos *= skyBoxRot;		newpos *= skyBoxRot;
newpos.y *= 4.0;		newpos.y *= 4.0;
		#if !USE_REFLECTION
		reflColor = textureCube(skyCube, newpos.rgb).rgb;
		#else
// Interpolate between the sky color and nearby objects.		// Interpolate between the sky color and nearby objects.
reflColor = mix(textureCube(skyCube, newpos.rgb).rgb, refTex.rgb, refTex.a);		reflColor = mix(textureCube(skyCube, newpos.rgb).rgb, refTex.rgb, refTex.a);
}		}

// reflMod is used to reduce the intensity of sky reflections, which otherwise are too extreme.		// reflMod is used to reduce the intensity of sky reflections, which otherwise are too extreme.
reflMod = max(refTex.a, 0.75);		reflMod = max(refTex.a, 0.75);
		#endif

#else		#else
reflMod = 0.75;		// Simplest case for reflection, return a gradient of blue based on Y component.
reflColor = vec3(0.15, 0.7, 0.82);		reflColor = mix(vec3(0.76, 0.84, 0.92), vec3(0.24, 0.43, 0.71), -eye.y);
#endif		#endif

losMod = texture2D(losMap, losCoords.st).a;		losMod = texture2D(losMap, losCoords.st).a;
losMod = losMod < 0.03 ? 0.0 : losMod;		losMod = losMod < 0.03 ? 0.0 : losMod;

vec3 color;		vec3 color;
#if USE_SHADOWS_ON_WATER && USE_SHADOW		#if USE_SHADOWS_ON_WATER && USE_SHADOW
float fresShadow = mix(fresnel, fresnelshadow, 0.05 + murkiness0.2);		float fresShadow = mix(fresnel, fresnelshadow, 0.05 + murkiness0.2);
color = mix(refrColor, reflColor, fresShadow);		color = mix(refrColor, reflColor, fresShadow * reflMod);
#else		#else
color = mix(refrColor, reflColor, fresnel * reflMod);		color = mix(refrColor, reflColor, fresnel * reflMod);
#endif		#endif

#if USE_SHADOWS_ON_WATER && USE_SHADOW		#if USE_SHADOWS_ON_WATER && USE_SHADOW
color += shadow*specular;		color += shadow*specular;
#else		#else
color += specular;		color += specular;
#endif		#endif

#if USE_FOG		#if USE_FOG
color = get_fog(color);		color = get_fog(color);
#endif		#endif

#if USE_FANCY_EFFECTS		#if USE_FANCY_EFFECTS
vec4 FoamEffects = texture2D(waterEffectsTexOther, gl_FragCoord.xy/screenSize);		vec4 FoamEffects = texture2D(waterEffectsTexOther, gl_FragCoord.xy/screenSize);

vec3 foam1 = texture2D(normalMap, (normalCoords.st + normalCoords.zw * BigMovementwaviness/10.0) (baseScale - waviness/wavyEffect)).aaa;		vec3 foam1 = texture2D(normalMap, (normalCoords.st + normalCoords.zw * BigMovementwaviness/10.0) (baseScale - waviness/wavyEffect)).aaa;
vec3 foam2 = texture2D(normalMap2, (normalCoords.st + normalCoords.zw * BigMovementwaviness/10.0) (baseScale - waviness/wavyEffect)).aaa;		vec3 foam2 = texture2D(normalMap2, (normalCoords.st + normalCoords.zw * BigMovementwaviness/10.0) (baseScale - waviness/wavyEffect)).aaa;
vec3 foam3 = texture2D(normalMap, normalCoords.st/6.0 - normalCoords.zw * 0.02).aaa;		vec3 foam3 = texture2D(normalMap, normalCoords.st/6.0 - normalCoords.zw * 0.02).aaa;
vec3 foam4 = texture2D(normalMap2, normalCoords.st/6.0 - normalCoords.zw * 0.02).aaa;		vec3 foam4 = texture2D(normalMap2, normalCoords.st/6.0 - normalCoords.zw * 0.02).aaa;
vec3 foaminterp = mix(foam1, foam2, moddedTime);		vec3 foaminterp = mix(foam1, foam2, moddedTime);
foaminterp *= mix(foam3, foam4, moddedTime);		foaminterp *= mix(foam3, foam4, moddedTime);

foam1.x = foaminterp.x * WindCosSin.x - foaminterp.z * WindCosSin.y;		foam1.x = foaminterp.x * WindCosSin.x - foaminterp.z * WindCosSin.y;

color += FoamEffects.r * FoamEffects.a * 0.4 + pow(foam1.x * (5.0 + waviness), 2.6 - waviness / 5.5);		color += FoamEffects.r * FoamEffects.a * 0.4 + pow(foam1.x * (5.0 + waviness), 2.6 - waviness / 5.5);
#endif		#endif

float alpha = 1.0;		float alpha = 1.0;

#if !USE_REFRACTION		#if !USE_REFRACTION
alpha = 1.4 - extFact;		alpha = 1.4 - extFact;
#endif		#endif

#if USE_FANCY_EFFECTS		#if USE_FANCY_EFFECTS
if (fancyeffects.a < 0.05 && waterDepth < -1.0 )		if (fancyeffects.a < 0.05 && waterDepth < -1.0 )
alpha = 0.0;		alpha = 0.0;
#endif		#endif

gl_FragColor = vec4(color * losMod, alpha);		gl_FragColor = vec4(color * losMod, alpha);
}		}