2016-03-29 13:14:06 +02:00
|
|
|
#version 450
|
|
|
|
|
2018-08-30 15:42:25 +02:00
|
|
|
#include "compiled.inc"
|
2017-12-13 14:21:42 +01:00
|
|
|
#include "std/math.glsl"
|
|
|
|
#include "std/gbuffer.glsl"
|
2016-07-10 00:51:39 +02:00
|
|
|
|
2016-03-29 13:14:06 +02:00
|
|
|
uniform sampler2D tex;
|
2016-05-13 00:08:11 +02:00
|
|
|
uniform sampler2D gbufferD;
|
2016-08-07 01:43:21 +02:00
|
|
|
uniform sampler2D gbuffer0; // Normal, roughness
|
2018-05-21 17:55:26 +02:00
|
|
|
uniform sampler2D gbuffer1; // basecol, spec
|
2016-03-29 13:14:06 +02:00
|
|
|
uniform mat4 P;
|
2018-12-06 15:23:08 +01:00
|
|
|
uniform mat3 V3;
|
2017-11-04 18:35:34 +01:00
|
|
|
uniform vec2 cameraProj;
|
2016-03-31 21:06:53 +02:00
|
|
|
|
2020-03-04 17:45:19 +01:00
|
|
|
uniform vec3 PPComp9;
|
|
|
|
uniform vec3 PPComp10;
|
|
|
|
|
2016-04-20 19:35:22 +02:00
|
|
|
in vec3 viewRay;
|
2016-03-29 13:14:06 +02:00
|
|
|
in vec2 texCoord;
|
2016-10-12 17:52:27 +02:00
|
|
|
out vec4 fragColor;
|
2016-03-29 13:14:06 +02:00
|
|
|
|
|
|
|
vec3 hitCoord;
|
2016-03-31 21:06:53 +02:00
|
|
|
float depth;
|
|
|
|
|
2018-11-27 21:34:42 +01:00
|
|
|
const int numBinarySearchSteps = 7;
|
|
|
|
const int maxSteps = 18;
|
|
|
|
|
2018-12-05 17:47:45 +01:00
|
|
|
vec2 getProjectedCoord(const vec3 hit) {
|
|
|
|
vec4 projectedCoord = P * vec4(hit, 1.0);
|
2016-03-31 21:06:53 +02:00
|
|
|
projectedCoord.xy /= projectedCoord.w;
|
|
|
|
projectedCoord.xy = projectedCoord.xy * 0.5 + 0.5;
|
2018-11-27 21:44:56 +01:00
|
|
|
#ifdef HLSL
|
2017-06-23 15:47:51 +02:00
|
|
|
projectedCoord.y = 1.0 - projectedCoord.y;
|
|
|
|
#endif
|
2017-01-17 14:48:47 +01:00
|
|
|
return projectedCoord.xy;
|
2016-03-31 21:06:53 +02:00
|
|
|
}
|
2016-03-29 13:14:06 +02:00
|
|
|
|
2018-12-05 17:47:45 +01:00
|
|
|
float getDeltaDepth(const vec3 hit) {
|
|
|
|
depth = textureLod(gbufferD, getProjectedCoord(hit), 0.0).r * 2.0 - 1.0;
|
2017-11-04 18:35:34 +01:00
|
|
|
vec3 viewPos = getPosView(viewRay, depth, cameraProj);
|
2018-12-05 17:47:45 +01:00
|
|
|
return viewPos.z - hit.z;
|
2016-03-31 21:06:53 +02:00
|
|
|
}
|
|
|
|
|
2018-12-05 17:47:45 +01:00
|
|
|
vec4 binarySearch(vec3 dir) {
|
|
|
|
float ddepth;
|
2018-12-06 15:23:08 +01:00
|
|
|
vec3 start = hitCoord;
|
2018-11-27 21:34:42 +01:00
|
|
|
for (int i = 0; i < numBinarySearchSteps; i++) {
|
2016-10-17 17:39:40 +02:00
|
|
|
dir *= 0.5;
|
|
|
|
hitCoord -= dir;
|
2018-12-05 17:47:45 +01:00
|
|
|
ddepth = getDeltaDepth(hitCoord);
|
|
|
|
if (ddepth < 0.0) hitCoord += dir;
|
2018-11-27 21:34:42 +01:00
|
|
|
}
|
|
|
|
// Ugly discard of hits too far away
|
2020-03-04 17:45:19 +01:00
|
|
|
#ifdef _CPostprocess
|
|
|
|
if (abs(ddepth) > PPComp9.z / 500) return vec4(0.0);
|
|
|
|
#else
|
|
|
|
if (abs(ddepth) > ssrSearchDist / 500) return vec4(0.0);
|
|
|
|
#endif
|
2017-01-17 14:48:47 +01:00
|
|
|
return vec4(getProjectedCoord(hitCoord), 0.0, 1.0);
|
2016-03-29 13:14:06 +02:00
|
|
|
}
|
|
|
|
|
2016-03-29 16:50:51 +02:00
|
|
|
vec4 rayCast(vec3 dir) {
|
2020-03-04 17:45:19 +01:00
|
|
|
#ifdef _CPostprocess
|
|
|
|
dir *= PPComp9.x;
|
|
|
|
#else
|
|
|
|
dir *= ssrRayStep;
|
|
|
|
#endif
|
2018-11-27 21:34:42 +01:00
|
|
|
for (int i = 0; i < maxSteps; i++) {
|
2016-04-12 14:44:21 +02:00
|
|
|
hitCoord += dir;
|
2016-10-17 17:39:40 +02:00
|
|
|
if (getDeltaDepth(hitCoord) > 0.0) return binarySearch(dir);
|
2018-11-27 21:34:42 +01:00
|
|
|
}
|
2017-03-12 17:29:22 +01:00
|
|
|
return vec4(0.0);
|
2016-04-20 19:35:22 +02:00
|
|
|
}
|
|
|
|
|
2016-03-29 13:14:06 +02:00
|
|
|
void main() {
|
2018-12-05 17:47:45 +01:00
|
|
|
vec4 g0 = textureLod(gbuffer0, texCoord, 0.0);
|
2020-03-04 17:45:19 +01:00
|
|
|
float roughness = unpackFloat(g0.b).y;
|
2018-12-05 17:47:45 +01:00
|
|
|
if (roughness == 1.0) { fragColor.rgb = vec3(0.0); return; }
|
2016-08-07 01:43:21 +02:00
|
|
|
|
2018-12-05 17:47:45 +01:00
|
|
|
float spec = fract(textureLod(gbuffer1, texCoord, 0.0).a);
|
|
|
|
if (spec == 0.0) { fragColor.rgb = vec3(0.0); return; }
|
2016-03-29 13:14:06 +02:00
|
|
|
|
2018-12-05 17:47:45 +01:00
|
|
|
float d = textureLod(gbufferD, texCoord, 0.0).r * 2.0 - 1.0;
|
|
|
|
if (d == 1.0) { fragColor.rgb = vec3(0.0); return; }
|
2016-08-07 01:43:21 +02:00
|
|
|
|
2016-04-16 18:57:32 +02:00
|
|
|
vec2 enc = g0.rg;
|
2016-10-17 17:39:40 +02:00
|
|
|
vec3 n;
|
|
|
|
n.z = 1.0 - abs(enc.x) - abs(enc.y);
|
|
|
|
n.xy = n.z >= 0.0 ? enc.xy : octahedronWrap(enc.xy);
|
|
|
|
n = normalize(n);
|
2016-04-16 18:57:32 +02:00
|
|
|
|
2018-12-06 15:23:08 +01:00
|
|
|
vec3 viewNormal = V3 * n;
|
2017-11-04 18:35:34 +01:00
|
|
|
vec3 viewPos = getPosView(viewRay, d, cameraProj);
|
2018-12-06 15:23:08 +01:00
|
|
|
vec3 reflected = normalize(reflect(viewPos, viewNormal));
|
|
|
|
hitCoord = viewPos;
|
2016-03-31 21:06:53 +02:00
|
|
|
|
2020-03-04 17:45:19 +01:00
|
|
|
#ifdef _CPostprocess
|
|
|
|
vec3 dir = reflected * (1.0 - rand(texCoord) * PPComp10.y * roughness) * 2.0;
|
|
|
|
#else
|
|
|
|
vec3 dir = reflected * (1.0 - rand(texCoord) * ssrJitter * roughness) * 2.0;
|
|
|
|
#endif
|
|
|
|
|
2018-12-06 15:23:08 +01:00
|
|
|
// * max(ssrMinRayStep, -viewPos.z)
|
2016-04-27 10:29:32 +02:00
|
|
|
vec4 coords = rayCast(dir);
|
2016-03-29 13:14:06 +02:00
|
|
|
|
2016-03-31 21:06:53 +02:00
|
|
|
vec2 deltaCoords = abs(vec2(0.5, 0.5) - coords.xy);
|
|
|
|
float screenEdgeFactor = clamp(1.0 - (deltaCoords.x + deltaCoords.y), 0.0, 1.0);
|
2016-03-29 13:14:06 +02:00
|
|
|
|
2017-03-12 17:29:22 +01:00
|
|
|
float reflectivity = 1.0 - roughness;
|
2020-03-04 17:45:19 +01:00
|
|
|
#ifdef _CPostprocess
|
|
|
|
float intensity = pow(reflectivity, PPComp10.x) * screenEdgeFactor * clamp(-reflected.z, 0.0, 1.0) * clamp((PPComp9.z - length(viewPos - hitCoord)) * (1.0 / PPComp9.z), 0.0, 1.0) * coords.w;
|
|
|
|
#else
|
|
|
|
float intensity = pow(reflectivity, ssrFalloffExp) * screenEdgeFactor * clamp(-reflected.z, 0.0, 1.0) * clamp((ssrSearchDist - length(viewPos - hitCoord)) * (1.0 / ssrSearchDist), 0.0, 1.0) * coords.w;
|
|
|
|
#endif
|
2016-03-29 13:14:06 +02:00
|
|
|
|
2016-06-21 13:29:27 +02:00
|
|
|
intensity = clamp(intensity, 0.0, 1.0);
|
2018-12-05 17:47:45 +01:00
|
|
|
vec3 reflCol = textureLod(tex, coords.xy, 0.0).rgb;
|
2016-06-21 13:29:27 +02:00
|
|
|
reflCol = clamp(reflCol, 0.0, 1.0);
|
2018-11-27 21:34:42 +01:00
|
|
|
fragColor.rgb = reflCol * intensity * 0.5;
|
2016-03-29 13:14:06 +02:00
|
|
|
}
|