307 lines
9.7 KiB
GLSL
307 lines
9.7 KiB
GLSL
#version 450
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#ifdef GL_ES
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precision highp float;
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#endif
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#include "../compiled.glsl"
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uniform sampler2D tex;
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uniform sampler2D gbufferD;
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uniform sampler2D gbuffer0;
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uniform sampler2D gbuffer1;
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#ifdef _CompoPos
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uniform vec3 eye;
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uniform vec3 eyeLook;
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#endif
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#ifdef _CompoGlare
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uniform vec3 light;
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uniform mat4 VP;
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#endif
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#ifdef _CompoFXAA
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uniform vec2 texStep;
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#endif
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#ifdef _CompoGrain
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uniform float time;
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#endif
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in vec2 texCoord;
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#ifdef _CompoPos
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in vec3 viewRay;
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#endif
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out vec4 outColor;
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const float focus_depth = 0.5;
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const float vignout = 1.8; // vignetting outer border
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const float vignin = 0.0; // vignetting inner border
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const float vignfade = 90.0; // f-stops till vignete fades
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const float fstop = 20; // f-stop value
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const float aspectRatio = 800.0 / 600.0;
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#ifdef _CompoPos
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vec3 getPos(float depth) {
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vec3 vray = normalize(viewRay);
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const float projectionA = cameraPlane.y / (cameraPlane.y - cameraPlane.x);
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const float projectionB = (-cameraPlane.y * cameraPlane.x) / (cameraPlane.y - cameraPlane.x);
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float linearDepth = projectionB / (depth * 0.5 + 0.5 - projectionA);
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float viewZDist = dot(eyeLook, vray);
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vec3 wposition = eye + vray * (linearDepth / viewZDist);
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return wposition;
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}
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#endif
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#ifdef _CompoFog
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// const vec3 compoFogColor = vec3(0.5, 0.6, 0.7);
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// const float compoFogAmountA = 1.0; // b = 0.01
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// const float compoFogAmountB = 1.0; // c = 0.1
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// vec3 applyFog(vec3 rgb, // original color of the pixel
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// float distance, // camera to point distance
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// vec3 rayOri, // camera position
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// vec3 rayDir) { // camera to point vector
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// float fogAmount = compoFogAmountB * exp(-rayOri.y * compoFogAmountA) * (1.0 - exp(-distance * rayDir.y * compoFogAmountA)) / rayDir.y;
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// return mix(rgb, compoFogColor, fogAmount);
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// }
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vec3 applyFog(vec3 rgb, float distance) {
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// float fogAmount = 1.0 - exp(-distance * compoFogAmountA);
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float fogAmount = 1.0 - exp(-distance * 0.0055);
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return mix(rgb, vec3(0.4, 0.7, 0.2), fogAmount);
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// return mix(rgb, compoFogColor, fogAmount);
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}
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#endif
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float vignette() {
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// float dist = distance(texCoord, vec2(0.5,0.5));
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// dist = smoothstep(vignout + (fstop / vignfade), vignin + (fstop / vignfade), dist);
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// return clamp(dist, 0.0, 1.0);
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// vignetting from iq
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// return 0.4 + 0.6 * pow(16.0 * texCoord.x * texCoord.y * (1.0 - texCoord.x) * (1.0 - texCoord.y), 0.2);
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return 0.3 + 0.7 * pow(16.0 * texCoord.x * texCoord.y * (1.0 - texCoord.x) * (1.0 - texCoord.y), 0.2);
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}
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// #ifdef _CompoDOF
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vec3 sampleBox(float size) {
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vec3 color = vec3(texture(tex, vec2(texCoord.x - size, texCoord.y - size)).rgb) * 0.075;
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color += texture(tex, vec2(texCoord.x, texCoord.y - size)).rgb * 0.1;
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color += texture(tex, vec2(texCoord.x + size, texCoord.y - size)).rgb * 0.075;
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color += texture(tex, vec2(texCoord.x - size, texCoord.y)).rgb * 0.1;
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color += texture(tex, vec2(texCoord.x, texCoord.y)).rgb * 0.30;
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color += texture(tex, vec2(texCoord.x + size, texCoord.y)).rgb * 0.1;
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color += texture(tex, vec2(texCoord.x - size, texCoord.y + size)).rgb * 0.075;
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color += texture(tex, vec2(texCoord.x, texCoord.y + size)).rgb * 0.1;
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color += texture(tex, vec2(texCoord.x + size, texCoord.y + size)).rgb * 0.075;
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return color;
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}
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// #endif
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float linearize(float depth) {
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return -cameraPlane.y * cameraPlane.x / (depth * (cameraPlane.y - cameraPlane.x) - cameraPlane.y);
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}
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// Based on lense flare implementation by musk
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// https://www.shadertoy.com/view/4sX3Rs
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vec3 lensflare(vec2 uv, vec2 pos) {
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vec2 uvd = uv * (length(uv));
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float f2 = max(1.0/(1.0+32.0*pow(length(uvd+0.8*pos),2.0)),0.0)*0.25;
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float f22 = max(1.0/(1.0+32.0*pow(length(uvd+0.85*pos),2.0)),0.0)*0.23;
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float f23 = max(1.0/(1.0+32.0*pow(length(uvd+0.9*pos),2.0)),0.0)*0.21;
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vec2 uvx = mix(uv, uvd, -0.5);
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float f4 = max(0.01-pow(length(uvx+0.4*pos),2.4),0.0)*6.0;
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float f42 = max(0.01-pow(length(uvx+0.45*pos),2.4),0.0)*5.0;
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float f43 = max(0.01-pow(length(uvx+0.5*pos),2.4),0.0)*3.0;
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uvx = mix(uv, uvd, -0.4);
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float f5 = max(0.01-pow(length(uvx+0.2*pos),5.5),0.0)*2.0;
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float f52 = max(0.01-pow(length(uvx+0.4*pos),5.5),0.0)*2.0;
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float f53 = max(0.01-pow(length(uvx+0.6*pos),5.5),0.0)*2.0;
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uvx = mix(uv, uvd, -0.5);
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float f6 = max(0.01-pow(length(uvx-0.3*pos),1.6),0.0)*6.0;
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float f62 = max(0.01-pow(length(uvx-0.325*pos),1.6),0.0)*3.0;
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float f63 = max(0.01-pow(length(uvx-0.35*pos),1.6),0.0)*5.0;
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vec3 c = vec3(0.0);
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c.r += f2 + f4 + f5 + f6;
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c.g += f22 + f42 + f52 + f62;
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c.b += f23 + f43 + f53 + f63;
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return c;
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}
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//Based on Filmic Tonemapping Operators http://filmicgames.com/archives/75
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vec3 tonemapFilmic(vec3 color) {
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vec3 x = max(vec3(0.0), color - 0.004);
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return (x * (6.2 * x + 0.5)) / (x * (6.2 * x + 1.7) + 0.06);
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}
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vec3 tonemapReinhard(vec3 color) {
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return color / (color + vec3(1.0));
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}
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vec3 uncharted2Tonemap(vec3 x) {
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const float A = 0.15;
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const float B = 0.50;
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const float C = 0.10;
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const float D = 0.20;
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const float E = 0.02;
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const float F = 0.30;
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return ((x * (A * x + C * B) + D * E) / (x * (A * x + B) + D * F)) - E / F;
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}
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vec3 tonemapUncharted2(vec3 color) {
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const float W = 11.2;
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const float exposureBias = 2.0;
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vec3 curr = uncharted2Tonemap(exposureBias * color);
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vec3 whiteScale = 1.0 / uncharted2Tonemap(vec3(W));
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return curr * whiteScale;
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}
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void main() {
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vec2 texCo = texCoord;
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#ifdef _CompoFishEye
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const float fishEyeStrength = -0.01;
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const vec2 m = vec2(0.5, 0.5);
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vec2 d = texCoord - m;
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float r = sqrt(dot(d, d));
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float power = (2.0 * PI / (2.0 * sqrt(dot(m, m)))) * fishEyeStrength;
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float bind;
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if (power > 0.0) { bind = sqrt(dot(m, m)); }
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else { bind = m.x; }
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if (power > 0.0) {
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texCo = m + normalize(d) * tan(r * power) * bind / tan(bind * power);
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}
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else {
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texCo = m + normalize(d) * atan(r * -power * 10.0) * bind / atan(-power * bind * 10.0);
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}
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#endif
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#ifdef _CompoFXAA
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const float FXAA_REDUCE_MIN = 1.0 / 128.0;
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const float FXAA_REDUCE_MUL = 1.0 / 8.0;
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const float FXAA_SPAN_MAX = 8.0;
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vec2 tcrgbNW = (texCo + vec2(-1.0, -1.0) * texStep);
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vec2 tcrgbNE = (texCo + vec2(1.0, -1.0) * texStep);
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vec2 tcrgbSW = (texCo + vec2(-1.0, 1.0) * texStep);
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vec2 tcrgbSE = (texCo + vec2(1.0, 1.0) * texStep);
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vec2 tcrgbM = vec2(texCo);
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vec3 rgbNW = texture(tex, tcrgbNW).rgb;
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vec3 rgbNE = texture(tex, tcrgbNE).rgb;
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vec3 rgbSW = texture(tex, tcrgbSW).rgb;
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vec3 rgbSE = texture(tex, tcrgbSE).rgb;
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vec4 texColor = texture(tex, tcrgbM);
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vec3 rgbM = texColor.rgb;
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vec3 luma = vec3(0.299, 0.587, 0.114);
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float lumaNW = dot(rgbNW, luma);
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float lumaNE = dot(rgbNE, luma);
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float lumaSW = dot(rgbSW, luma);
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float lumaSE = dot(rgbSE, luma);
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float lumaM = dot(rgbM, luma);
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float lumaMin = min(lumaM, min(min(lumaNW, lumaNE), min(lumaSW, lumaSE)));
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float lumaMax = max(lumaM, max(max(lumaNW, lumaNE), max(lumaSW, lumaSE)));
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vec2 dir;
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dir.x = -((lumaNW + lumaNE) - (lumaSW + lumaSE));
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dir.y = ((lumaNW + lumaSW) - (lumaNE + lumaSE));
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float dirReduce = max((lumaNW + lumaNE + lumaSW + lumaSE) *
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(0.25 * FXAA_REDUCE_MUL), FXAA_REDUCE_MIN);
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float rcpDirMin = 1.0 / (min(abs(dir.x), abs(dir.y)) + dirReduce);
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dir = min(vec2(FXAA_SPAN_MAX, FXAA_SPAN_MAX),
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max(vec2(-FXAA_SPAN_MAX, -FXAA_SPAN_MAX),
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dir * rcpDirMin)) * texStep;
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vec3 rgbA = 0.5 * (
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texture(tex, texCo + dir * (1.0 / 3.0 - 0.5)).rgb +
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texture(tex, texCo + dir * (2.0 / 3.0 - 0.5)).rgb);
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vec3 rgbB = rgbA * 0.5 + 0.25 * (
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texture(tex, texCo + dir * -0.5).rgb +
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texture(tex, texCo + dir * 0.5).rgb);
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vec4 col;
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float lumaB = dot(rgbB, luma);
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if ((lumaB < lumaMin) || (lumaB > lumaMax)) col = vec4(rgbA, texColor.a);
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else col = vec4(rgbB, texColor.a);
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#else
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vec4 col = texture(tex, texCo);
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#endif
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#ifdef _CompoDepth
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float depth = texture(gbufferD, texCoord).r * 2.0 - 1.0;
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#endif
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#ifdef _CompoDOF
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if (depth < 1.0) {
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float linDepth = linearize(depth);
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float blur_amount = abs(linDepth - compoDOFDistance) / cameraPlane.y;
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// float blur_amount = abs(linDepth - 4.0);
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float blurSize = compoDOFSize * blur_amount;
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// float blurSize = 0.0005 * blur_amount;
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col.rgb = 0.75 * sampleBox(blurSize * 0.5) + 0.25 * sampleBox(blurSize * 1.0);
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}
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#endif
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#ifdef _CompoFog
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// if (depth < 1.0) {
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// vec3 pos = getPos(depth);
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// float dist = distance(pos, eye);
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float dist = linearize(depth);
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// vec3 eyedir = eyeLook;// normalize(eye + pos);
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// col.rgb = applyFog(col.rgb, dist, eye, eyedir);
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col.rgb = applyFog(col.rgb, dist);
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// }
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#endif
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#ifdef _CompoGlare
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vec4 lndc = VP * vec4(light, 1.0);
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lndc.xy /= lndc.w;
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float lightDistance = distance(eye, light);
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vec2 lss = lndc.xy * 0.5 + 0.5;
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float lssdepth = linearize(texture(gbufferD, lss).r * 2.0 - 1.0);
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if (lssdepth >= lightDistance) {
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vec2 lensuv = (texCoord - 0.5) * 2.0;
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lensuv.x *= aspectRatio;
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vec3 lensflarecol = vec3(1.4, 1.2, 1.0) * lensflare(lensuv, lndc.xy);
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col.rgb += lensflarecol;
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}
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#endif
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#ifdef _CompoGrain
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// const float compoGrainStrength = 4.0;
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float x = (texCoord.x + 4.0) * (texCoord.y + 4.0) * (time * 10.0);
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col.rgb += vec3(mod((mod(x, 13.0) + 1.0) * (mod(x, 123.0) + 1.0), 0.01) - 0.005) * compoGrainStrength;
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#endif
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#ifdef _CompoVignette
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col.rgb *= vignette();
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#endif
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#ifdef _CompoExposure
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col.rgb *= compoExposureStrength;
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#endif
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#ifdef _CompoTonemap
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col.rgb = tonemapUncharted2(col.rgb);
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// col.rgb = tonemapFilmic(col.rgb); // With gamma
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#endif
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// To gamma
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col.rgb = pow(col.rgb, vec3(1.0 / 2.2));
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#ifdef _CompoBW
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// col.rgb = vec3(clamp(dot(col.rgb, col.rgb), 0.0, 1.0));
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col.rgb = vec3((col.r * 0.3 + col.g * 0.59 + col.b * 0.11) / 3.0) * 2.5;
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#endif
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#ifdef _CompoLetterbox
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// const float compoLetterboxSize = 0.1;
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col.rgb *= 1.0 - step(0.5 - compoLetterboxSize, abs(0.5 - texCoord.y));
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#endif
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outColor = col;
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}
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