- [Contrast Blur] Improve algorithm.

scripts/node_blur_contrast/node_blur_contrast.gml

@@ -47,25 +47,14 @@ function Node_Blur_Contrast(_x, _y, _group = noone) : Node_Processor(_x, _y, _gr
 		var ww = surface_get_width_safe(_surf);
 		var hh = surface_get_height_safe(_surf);
 		
-		temp_surface[0] = surface_verify(temp_surface[0], ww, hh, attrDepth());
-		
-		surface_set_shader(temp_surface[0], sh_blur_box_contrast);
-			shader_set_surface("baseSurface", _surf);
+		surface_set_shader(_outSurf, sh_blur_box_contrast);
 			shader_set_f("dimension", [ ww, hh ]);
 			shader_set_f("size",      _size);
 			shader_set_f("treshold",  _tres);
-			shader_set_i("direction", 0);
 			
 			draw_surface_safe(_surf, 0, 0);
 		surface_reset_shader();
 		
-		surface_set_shader(_outSurf, sh_blur_box_contrast);
-			shader_set(sh_blur_box_contrast);
-			shader_set_i("direction", 1);
-			
-			draw_surface_safe(temp_surface[0], 0, 0);
-		surface_reset_shader();
-		
 		__process_mask_modifier(_data);
 		_outSurf = mask_apply(_data[0], _outSurf, _mask, _mix);
 		_outSurf = channel_apply(_data[0], _outSurf, _data[6]);

scripts/node_registry/node_registry.gml

@@ -512,7 +512,7 @@ function __initNodes() {
 		addNodeObject(filter, "Displace",			s_node_displace,		"Node_Displace",		[1, Node_Displace], ["distort"], "Distort image using another image as a map.");
 		addNodeObject(filter, "Texture Remap",		s_node_texture_map,		"Node_Texture_Remap",	[1, Node_Texture_Remap],, "Remap image using texture map. Where red channel control x position and green channel control y position.");
 		addNodeObject(filter, "Time Remap",			s_node_time_map,		"Node_Time_Remap",		[1, Node_Time_Remap],, "Remap image using texture as time map. Where brighter pixel means using pixel from an older frame.");
-		addNodeObject(filter, "Morph Surface",		s_node_morph_surface,	"Node_Morph_Surface",	[1, Node_Morph_Surface],, "Morph pixel bewteen two surfaces.").setVersion(1141);
+		addNodeObject(filter, "Morph Surface",		s_node_morph_surface,	"Node_Morph_Surface",	[1, Node_Morph_Surface],, "Morph pixel between two surfaces.").setVersion(1141);
 		
 		ds_list_add(filter, "Effects");
 		addNodeObject(filter, "Outline",			s_node_border,			"Node_Outline",			[1, Node_Outline], ["border"], "Add border to the image.");

shaders/sh_blur_box_contrast/sh_blur_box_contrast.fsh

@@ -1,16 +1,15 @@
-//
-// Simple passthrough fragment shader
-//
 varying vec2 v_vTexcoord;
 varying vec4 v_vColour;
 
-uniform sampler2D baseSurface;
+#define TAU 6.283185307179586
+#define MAX_STRENGTH 64.
+
 uniform vec2  dimension;
 uniform float size;
 uniform float treshold;
 uniform int   direction;
 
-vec3 rgb2xyz( vec3 c ) {
+vec3 rgb2xyz( vec3 c ) { #region
     vec3 tmp;
     tmp.x = ( c.r > 0.04045 ) ? pow( ( c.r + 0.055 ) / 1.055, 2.4 ) : c.r / 12.92;
     tmp.y = ( c.g > 0.04045 ) ? pow( ( c.g + 0.055 ) / 1.055, 2.4 ) : c.g / 12.92,
@@ -19,83 +18,47 @@ vec3 rgb2xyz( vec3 c ) {
         mat3( 0.4124, 0.3576, 0.1805,
               0.2126, 0.7152, 0.0722,
               0.0193, 0.1192, 0.9505 );
-}
+} #endregion
 
-vec3 xyz2lab( vec3 c ) {
+vec3 xyz2lab( vec3 c ) { #region
     vec3 n = c / vec3( 95.047, 100, 108.883 );
     vec3 v;
     v.x = ( n.x > 0.008856 ) ? pow( n.x, 1.0 / 3.0 ) : ( 7.787 * n.x ) + ( 16.0 / 116.0 );
     v.y = ( n.y > 0.008856 ) ? pow( n.y, 1.0 / 3.0 ) : ( 7.787 * n.y ) + ( 16.0 / 116.0 );
     v.z = ( n.z > 0.008856 ) ? pow( n.z, 1.0 / 3.0 ) : ( 7.787 * n.z ) + ( 16.0 / 116.0 );
     return vec3(( 116.0 * v.y ) - 16.0, 500.0 * ( v.x - v.y ), 200.0 * ( v.y - v.z ));
-}
+} #endregion
 
-vec3 rgb2lab(vec3 c) {
+vec3 rgb2lab(vec3 c) { #region
     vec3 lab = xyz2lab( rgb2xyz( c ) );
     return vec3( lab.x / 100.0, 0.5 + 0.5 * ( lab.y / 127.0 ), 0.5 + 0.5 * ( lab.z / 127.0 ));
-}
+} #endregion
 
-float colorDifferent(in vec4 c1, in vec4 c2) {
-	vec3 lab1 = rgb2lab(c1.rgb * c1.a);
-	vec3 lab2 = rgb2lab(c2.rgb * c2.a);
-	
-	return length(lab1 - lab2);
-}
+float colorDifferent(in vec4 c1, in vec4 c2) { #region
+	return length(c1.rgb - c2.rgb) / 1.7320508076;
+} #endregion
 
 void main() {
-	vec4 base_col = texture2D( baseSurface, v_vTexcoord);
-	vec4 curr_col = texture2D( gm_BaseTexture, v_vTexcoord);
+	vec2  tx  = 1. / dimension;
+	vec4  col = texture2D( gm_BaseTexture, v_vTexcoord);
+	vec4  c   = col;
+	float div = 1.;
+	float sz2 = size * size;
 	
-	if(base_col.a > 0.5) {
-		vec4 col = curr_col;
-		vec4 _bcol, _ccol;
-		float mulp = 1.;
+	for(float i = -MAX_STRENGTH; i <= MAX_STRENGTH; i++)
+	for(float j = -MAX_STRENGTH; j <= MAX_STRENGTH; j++) {
+		float dist = i * i + j * j;
+		if(dist >= sz2) continue;
 		
-		if(direction == 0) {
-			for(float i = 1.; i < 32.; i++) {
-				if(i >= size) break;
+		float amp = 1. - dist / sz2;
+		vec2 pxs  = v_vTexcoord + vec2( i, j ) * tx;
+		vec4 bcol = texture2D( gm_BaseTexture, pxs);
 			
-				_bcol = texture2D( baseSurface, v_vTexcoord + vec2(i / dimension.x, 0.));
-				if(_bcol.a > 0.5 && colorDifferent(base_col, _bcol) < treshold) {
-					_ccol = texture2D( gm_BaseTexture, v_vTexcoord + vec2(i / dimension.x, 0.));
-					col += _ccol;
-					mulp++;
-				}
-				
-				_bcol = texture2D( baseSurface, v_vTexcoord - vec2(i / dimension.x, 0.));
-				if(_bcol.a > 0.5 && colorDifferent(base_col, _bcol) < treshold) {
-					_ccol = texture2D( gm_BaseTexture, v_vTexcoord - vec2(i / dimension.x, 0.));
-					col += _ccol;
-					mulp++;
+		if(c.a == bcol.a && colorDifferent(c, bcol) <= treshold) {
+			col += bcol * amp;
+			div += amp;
 		}
 	}
 	
-			col /= mulp;
-		} else if(direction == 1) {
-			for(float i = 1.; i < 32.; i++) {
-				if(i >= size) break;
-				
-				_bcol = texture2D( baseSurface, v_vTexcoord + vec2(0., i / dimension.y));
-				if(_bcol.a > 0.5 && colorDifferent(base_col, _bcol) < treshold) {
-					_ccol = texture2D( gm_BaseTexture, v_vTexcoord + vec2(0., i / dimension.y));
-					col += _ccol;
-					mulp++;
-				}
-				
-				_bcol = texture2D( baseSurface, v_vTexcoord - vec2(0., i / dimension.y));
-				if(_bcol.a > 0.5 && colorDifferent(base_col, _bcol) < treshold) {
-					_ccol = texture2D( gm_BaseTexture, v_vTexcoord - vec2(0., i / dimension.y));
-					col += _ccol;
-					mulp++;
-				}
-			}
-		
-			col /= mulp;
-		}
-		
-		col.a = base_col.a;
-		gl_FragColor = col;
-	} else {
-		gl_FragColor = base_col;
-	}
+	gl_FragColor = col / div;
 }

shaders/sh_outline/sh_outline.fsh

@@ -1,9 +1,8 @@
-//
-// Simple passthrough fragment shader
-//
 varying vec2 v_vTexcoord;
 varying vec4 v_vColour;
 
+#define TAU 6.283185307179586
+
 uniform vec2  dimension;
 
 uniform vec2      borderStart;
@@ -27,8 +26,6 @@ uniform sampler2D blend_alphaSurf;
 uniform int sampleMode;
 uniform int outline_only;
 
-#define TAU 6.283185307179586
-
 vec2 round(in vec2 v) { #region
 	v.x = fract(v.x) > 0.5? ceil(v.x) : floor(v.x);	
 	v.y = fract(v.y) > 0.5? ceil(v.y) : floor(v.y);