First commit
This commit is contained in:
432
shaders/old/deferred.shader
Executable file
432
shaders/old/deferred.shader
Executable file
@@ -0,0 +1,432 @@
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#version 300 es
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precision highp float;
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in vec2 uv;
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in vec3 position;
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out vec2 v_uv;
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uniform mat4 viewProjection;
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void main(void) {
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v_uv = uv;
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gl_Position = viewProjection * vec4(position, 1.0);
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}
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// #keplerEngine - Split
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#version 300 es
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precision highp float;
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#define PI 3.14159265358979323846
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#define ANISOTROPY 0
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#define USE_IES_PROFILE 0
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#define TRANSPARENT_MATERIAL 0
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#define TRANSLUCENT_MATERIAL 0
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#define CUBEMAP_EDGE_FIXUP 0
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uniform float lightType;
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uniform vec3 lightGeometry;
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uniform samplerCube reflectionSampler;
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uniform float clearCoat;
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uniform vec3 clearCoatColor;
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uniform float clearCoatThickness;
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uniform float clearCoatRoughness;
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uniform vec3 lightDirection;
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uniform float attenuation;
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uniform float SourceRadius;
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uniform float SourceLength;
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uniform float environmentLuminance;
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uniform vec3 lightPosition;
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uniform vec3 lightColor;
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uniform float lightIntensity;
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uniform float clearCoatIOR;
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uniform vec3 cameraPosition;
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uniform float metallic;
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#include "physically_based_shading.shader"
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#define TEXTURED_MATERIAL 1
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out vec4 fragmentColor;
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in vec2 v_uv;
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uniform float reflectance;
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uniform float anisotropy;
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uniform float roughness;
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uniform sampler2D diffuseSampler;
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uniform sampler2D normalSampler;
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uniform sampler2D tangentSampler;
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uniform sampler2D infoSampler;
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uniform sampler2D ambientOcclusionSampler;
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uniform sampler2D materialSampler;
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uniform sampler2D shadowNoiseSampler;
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uniform sampler2D shadowDepthSampler;
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uniform float luma_z;
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uniform float far;
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uniform mat4 InvProjection;
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uniform mat4 lightViewProjection;
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uniform vec2 screenSize;
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uniform float shadowBias;
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const float PackUpscale = 256. / 255.; // fraction -> 0..1 (including 1)
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const float UnpackDownscale = 255. / 256.; // 0..1 -> fraction (excluding 1)
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const vec3 PackFactors = vec3( 256. * 256. * 256., 256. * 256., 256. );
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const vec4 UnpackFactors = UnpackDownscale / vec4( PackFactors, 1. );
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const float ShiftRight8 = 1. / 256.;
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vec4 packDepthToRGBA( const in float v ) {
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vec4 r = vec4( fract( v * PackFactors ), v );
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r.yzw -= r.xyz * ShiftRight8; // tidy overflow
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return r * PackUpscale;
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}
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float unpackRGBAToDepth( const in vec4 v ) {
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return dot( v, UnpackFactors );
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}
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float shadow_sample(sampler2D depthMap, vec2 coord)
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{
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return ( texture(depthMap, coord.xy).x );//DecodeFloatRGBA() ;
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}
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vec2 DoubleSampleRotated(sampler2D depthMap, vec4 p, vec4 rotMatr, vec4 kernel) {
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vec4 rotatedOff;
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rotatedOff = rotMatr.xyzw * kernel.xxww +
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rotMatr.zwxy * kernel.yyzz;
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vec4 fetchPos = p.xyxy + rotatedOff;// + rotatedOff
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vec2 result;
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result.x = shadow_sample(depthMap, fetchPos.xy);
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result.y = shadow_sample(depthMap, fetchPos.zw);
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return result;
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}
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float PCF(sampler2D depthMap, vec4 p, vec2 randDirTC, float depth)
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{
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vec2 kernelRadius = vec2(4.0);
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vec4 irreg_kernel_2d[8];
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irreg_kernel_2d[0] = vec4(-0.556641,-0.037109,-0.654297, 0.111328);
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irreg_kernel_2d[1] = vec4(0.173828,0.111328,0.064453, -0.359375);
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irreg_kernel_2d[2] = vec4(0.001953,0.082031,-0.060547, 0.078125);
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irreg_kernel_2d[3] = vec4(0.220703,-0.359375,-0.062500, 0.001953);
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irreg_kernel_2d[4] = vec4(0.242188,0.126953,-0.250000, -0.140625);
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irreg_kernel_2d[5] = vec4(0.070313,-0.025391,0.148438, 0.082031);
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irreg_kernel_2d[6] = vec4(-0.078125,0.013672,-0.314453, 0.013672);
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irreg_kernel_2d[7] = vec4(0.117188,-0.140625,-0.199219, 0.117188);
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vec2 vInvShadowMapWH = vec2(1.0 / 2048.0);
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const int kernelSize = 8;
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mediump float P_Z = depth; // p.z;
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vec4 p0 = vec4(p.xyz, 1.0);
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mediump vec2 rotScale = vec2(kernelRadius.y * 2.0);
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float shadowTest = 0.0;
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#define KERNEL_STEP_SIZE 2
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vec2 rotSample = 2.0 * texture(shadowDepthSampler, randDirTC.xy).xy - 1.0;
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rotSample.xy = normalize(rotSample.xy);
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rotSample.xy *= (kernelRadius.xy * vInvShadowMapWH.xy);
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vec4 rot = vec4(rotSample.x, -rotSample.y, rotSample.y, rotSample.x);
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const int kernelOffset = 0;
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for(int i=kernelOffset; i<kernelSize; i+=KERNEL_STEP_SIZE) // Loop over taps
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{
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mediump vec4 sampleDepth = vec4(0.0);
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vec4 irr = irreg_kernel_2d[i+0];
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sampleDepth.xy = DoubleSampleRotated(depthMap, p0, rot, irr);
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sampleDepth.zw = DoubleSampleRotated(depthMap, p0, rot, irreg_kernel_2d[i+1]);
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mediump vec4 InShadow;
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InShadow.x = ( P_Z < sampleDepth.x + shadowBias ) ? 1. : 0.0;
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InShadow.y = ( P_Z < sampleDepth.y + shadowBias ) ? 1. : 0.0;
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InShadow.z = ( P_Z < sampleDepth.z + shadowBias ) ? 1. : 0.0;
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InShadow.w = ( P_Z < sampleDepth.w + shadowBias ) ? 1. : 0.0;
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const mediump float quality = 8.0; // 8 == high
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const mediump float fInvSamplNum = (1.0 / quality);
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shadowTest += dot(InShadow, vec4(fInvSamplNum));
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}
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return shadowTest;
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}
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float DecodeFloatRGBA( vec4 rgba ) {
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return (rgba).x;
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//return dot( rgba, vec4(1.0, 1.0 / 255.0, 1.0 / 65025.0, 1.0 / 160581375.0) );
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}
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float poissonPCFmultitap(vec4 projCoords, float shadowDepth, vec2 uv)
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{
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const mediump float step = 1.0 - 1.0 / 8.0;
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const mediump float fScale = 0.025; // 0.025
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mediump float n = 0.0;
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mediump vec3 directions[8];
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float vSampleScale = 1.0 / 2048.0;
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directions[0] = normalize(vec3( 1.0, 1.0, 1.0))*fScale*(n+=step);
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directions[1] = normalize(vec3(-1.0,-1.0,-1.0))*fScale*(n+=step);
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directions[2] = normalize(vec3(-1.0,-1.0, 1.0))*fScale*(n+=step);
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directions[3] = normalize(vec3(-1.0, 1.0,-1.0))*fScale*(n+=step);
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directions[4] = normalize(vec3(-1.0, 1.0 ,1.0))*fScale*(n+=step);
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directions[5] = normalize(vec3( 1.0,-1.0,-1.0))*fScale*(n+=step);
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directions[6] = normalize(vec3( 1.0,-1.0, 1.0))*fScale*(n+=step);
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directions[7] = normalize(vec3( 1.0, 1.0,-1.0))*fScale*(n+=step);
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mediump vec3 randomSample = texture(shadowNoiseSampler, vec2(64.0, 64.0) * uv.xy / 4.0).xyz * 2.0 - 1.0;
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float sum = 0.0;
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for( int i = 0; i < 4; i++ ) {
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vec3 sampler = reflect(directions[0], randomSample) * vSampleScale;
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float pixelDepth = DecodeFloatRGBA( texture(shadowDepthSampler, projCoords.xy+ sampler.xy ) ) ; // + sampler.xy + sampler.z
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if( pixelDepth + shadowBias > shadowDepth) {
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sum += 1.0;
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} else {
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sum += 0.0;
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}
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}
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return sum;
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}
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float linestep(float min, float max, float value) {
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return clamp((value - min) / (max - min), 0., 1.);
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}
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float reduceBleeding(float p_max, float amount) {
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return linestep(amount, 1.0, p_max);
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}
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float ChebyshevUpperBound(vec2 moments, float distance) {
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if (distance <= moments.x)
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return 1.0;
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float g_minVariance = .0007;
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float variance = moments.y - (moments.x*moments.x);
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variance = max(variance,g_minVariance);
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float d = distance - moments.x;
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float p_max = variance / (variance + d*d);
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return reduceBleeding(p_max, shadowBias);
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}
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float calculateShadowOcclusion( vec3 worldPosition, vec2 uv ) {
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vec4 projCoords = lightViewProjection * vec4(worldPosition, 1.0) ;
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float shadowDepth = length( lightPosition - worldPosition ) / 99.0;
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projCoords.xy /= projCoords.w;
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projCoords = 0.51 * projCoords + 0.5;
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vec4 moments = texture( shadowDepthSampler, projCoords.xy );
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mediump vec2 randomSample = texture(shadowNoiseSampler, vec2(1024.) * uv / 64.0).xy * 2.0 - 1.0;
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float outFrustum = 0.0;
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if(projCoords.x < 0.0 || projCoords.x > 1.0) {
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return 0.0;
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}
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if(projCoords.y < 0.0 || projCoords.y > 1.0) {
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return 0.0;
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}
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if(projCoords.z < 1.0) {
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return 0.0;
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}
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return ChebyshevUpperBound(moments.xy, shadowDepth);
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return poissonPCFmultitap(projCoords, shadowDepth, uv);
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//return PCF( shadowDepthSampler, projCoords, randomSample, shadowDepth );
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}
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vec3 sampleReflection( vec3 r ) {
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return texture(reflectionSampler, r).xyz;
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}
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vec3 cubemapReflection( deferredMaterialData materialData ) {
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vec3 viewDir = ( cameraPosition - materialData.position );
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vec3 reflectionVector = reflect(-viewDir, normalize( materialData.normal ));
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vec3 reflectionSample = sampleReflection( reflectionVector );
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return reflectionSample;
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}
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const float gamma = 2.2;
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float toLinear(float v) {
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return pow(v, gamma);
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}
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vec2 toLinear(vec2 v) {
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return pow(v, vec2(gamma));
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}
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vec3 toLinear(vec3 v) {
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return pow(v, vec3(gamma));
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}
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vec4 toLinear(vec4 v) {
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return vec4(toLinear(v.rgb), v.a);
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}
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vec3 HDR_ACES(const vec3 x) {
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// Narkowicz 2015, "ACES Filmic Tone Mapping Curve"
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const float a = 2.51;
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const float b = 0.03;
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const float c = 2.43;
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const float d = 0.59;
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const float e = 0.14;
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return (x * (a * x + b)) / (x * (c * x + d) + e);
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}
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vec3 tonemap(const vec3 x) {
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return HDR_ACES(x);
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}
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float linearToSRGB(float c) {
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return (c <= 0.0031308) ? c * 12.92 : (pow(abs(c), 1.0 / 2.4) * 1.055) - 0.055;
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}
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vec3 linearToSRGB(vec3 c) {
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return vec3(linearToSRGB(c.r), linearToSRGB(c.g), linearToSRGB(c.b));
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}
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void main() {
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deferredMaterialData materialData;
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float gamma = 2.2;
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vec4 normalDepth = texture(normalSampler, v_uv);
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vec4 diffuseRoughness = texture(diffuseSampler, v_uv);
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vec4 positionMaterialIndex = texture(infoSampler, v_uv);
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vec4 depthNormal = texture(normalSampler, v_uv);
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vec4 shadowAmbientOcclusion = texture(ambientOcclusionSampler, v_uv);
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materialData.ambientOcclusion = shadowAmbientOcclusion.x;
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materialData.normal = normalize( depthNormal.xyz );
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materialData.baseColor = sRGBtoLinear(diffuseRoughness.rgb);
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materialData.position = positionMaterialIndex.xyz;
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materialData.index = positionMaterialIndex.w;
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materialData.roughness = diffuseRoughness.w;
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materialData.alpha = 1.0;
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materialData.shadowOcclusion = shadowAmbientOcclusion.y; //calculateShadowOcclusion( materialData.position, v_uv );
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materialData.metallic = metallic;
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materialData.reflectance = reflectance;
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//materialData.tangent = tangent;
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//materialData.shadowOcclusion = 1.0;
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//materialData.baseColor = vec3(1.0);
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vec4 color = physically_based_shading( materialData );
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float exposure = 1.7;
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color.rgb *= exposure;
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vec3 finalRender = color.rgb;// + diffuse * .2
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// For fxaa
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float luma = sqrt( dot(color.rgb, vec3(0.299, 0.587, 0.114)) );
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if(luma_z == 1.0)
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//if(v_uv.x < 0.5)
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fragmentColor = vec4(linearToSRGB(tonemap(color.rgb)), luma);
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//else
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// fragmentColor = vec4(vec3(materialData.ambientOcclusion), 1.0);
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//fragmentColor = vec4(linearToSRGB(tonemap(color.rgb)), 1.0);
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if(materialData.index == 100.0) {
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vec3 cubeReflectionSample = cubemapReflection( materialData );
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fragmentColor = vec4( cubeReflectionSample, 1.0 );
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}
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}
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Reference in New Issue
Block a user