From 332a0f4e03f35132f86657c33814b577c0070a60 Mon Sep 17 00:00:00 2001
From: Mathias Paulin <mathias.paulin@irit.fr>
Date: Wed, 14 Apr 2021 19:01:29 +0200
Subject: [PATCH] Prototype of LIC function
---
.../ImageProcess.frag.glsl | 44 +++++++++++++++++--
1 file changed, 41 insertions(+), 3 deletions(-)
diff --git a/src/libRender/RadiumNBR/Shaders/ImageProcessingPass/ImageProcess.frag.glsl b/src/libRender/RadiumNBR/Shaders/ImageProcessingPass/ImageProcess.frag.glsl
index 721692b..0183a63 100644
--- a/src/libRender/RadiumNBR/Shaders/ImageProcessingPass/ImageProcess.frag.glsl
+++ b/src/libRender/RadiumNBR/Shaders/ImageProcessingPass/ImageProcess.frag.glsl
@@ -54,11 +54,47 @@ vec4 lic(in sampler2D desc,in bool invertdir) {
*/
+vec4 lic(in sampler2D desc,in bool invertdir, in vec2 imgSize) {
+ const int halfsize = 10;
+ vec2 coord = varTexcoord;
+ vec2 dir = texture(desc,coord).xy;
+ if ( length(dir) <0.0001 )
+ return vec4(0);
+ if(invertdir)
+ dir = vec2(dir.y,-dir.x);
+ float res = whiteNoise( dir, imgSize);
+
+ vec2 currentdir = dir;
+
+ for(int i=1;i<=halfsize;i++) {
+ coord = coord + currentdir;//*halfsize;
+ currentdir = texture(desc,coord).xy;
+ res += whiteNoise( currentdir, imgSize);
+ if(invertdir)
+ currentdir = vec2(currentdir.y,-currentdir.x);
+ }
+
+ coord = varTexcoord;
+ currentdir = dir;
+ for(int i=1;i<=halfsize;i++) {
+ coord = coord - currentdir;//*halfsize;
+ currentdir = texture(desc,coord).xy;
+ res += whiteNoise( currentdir, imgSize);
+ if(invertdir)
+ currentdir = vec2(currentdir.y,-currentdir.x);
+ }
+ res = res/(2.0f*float(halfsize)+1.0f);
+ return vec4(vec3(res), 0);
+}
+
+
+
void main() {
+ vec2 imgSize = vec2(textureSize(image_sampler, 0));
/*
// 4x4 filtering for test
const int half_width = 2;
- vec2 texelSize = 1.0 / vec2(textureSize(image_sampler, 0));
+ vec2 texelSize = 1.0 / vec2(imgSize);
vec3 result = vec3(0.0);
for (int x = -half_width; x < half_width; ++x)
{
@@ -70,8 +106,10 @@ void main() {
}
out_color = vec4(result / (4 * half_width * half_width), 1);
*/
-
- vec2 imgSize = vec2(textureSize(image_sampler, 0));
+ /*
out_color = vec4( vec3( whiteNoise( varTexcoord, imgSize) ), 1);
+ */
+ out_color = lic(image_sampler, false, imgSize);
+
}
--
GitLab