Added VFEZ

VFEZ/Shaders/Effects/vfez_outline.gdshaderinc

@@ -0,0 +1,101 @@
+#ifndef VFEZ_UTILS
+	#include "vfez_utils.gdshaderinc"
+	#define VFEZ_UTILS
+#endif
+
+group_uniforms outline;
+uniform vec3 outline_color: source_color;
+uniform float outline_alpha: hint_range(0.0, 1.0) = 1.0;
+uniform float outline_glow: hint_range(1., 100, 1.) = 1.0;
+uniform float outline_width;
+uniform bool only_render_outline;
+group_uniforms;
+
+group_uniforms outline.pixel_perfect;
+uniform bool use_pixel_perfect_outline;
+uniform int outline_pixel_width;
+group_uniforms;
+
+group_uniforms outline.texture;
+uniform bool use_outline_texture;
+uniform sampler2D outline_texture;
+uniform vec2 outline_texture_scale = vec2(1.);
+uniform vec2 outline_texture_offset = vec2(0.);
+uniform vec2 outline_texture_scroll_speed = vec2(0.);
+group_uniforms;
+
+group_uniforms outline.distortion;
+uniform bool use_outline_distortion;
+uniform sampler2D outline_distortion_texture;
+uniform vec2 outline_distortion_texture_scale = vec2(1.);
+uniform vec2 outline_distortion_texture_offset = vec2(0.);
+uniform vec2 outline_distortion_texture_scroll_speed = vec2(0.);
+uniform float outline_distortion_amount;
+group_uniforms;
+
+vec4 outline(vec4 color, vec2 texture_pixel_size, vec2 uv, sampler2D tex)
+{   
+    float base_tex_a = texture(tex, uv).a;;
+
+    vec2 destUV;
+    if (use_pixel_perfect_outline)
+    {
+        destUV = texture_pixel_size * float(outline_pixel_width);
+    }
+    else
+    {
+        destUV = texture_pixel_size * float(outline_width) * 200.;
+    }
+
+    if (use_outline_distortion)
+    {
+        vec2 outlineDistUV = transform_uv(
+            uv,
+            outline_distortion_texture_scale,
+            outline_distortion_texture_offset,
+            true);
+        
+        destUV = uv_distortion(destUV, outline_distortion_texture, outlineDistUV, 
+            outline_distortion_amount, outline_distortion_texture_scroll_speed, true);;
+
+    }
+
+    float left = texture(tex, uv + vec2(destUV.x, 0.)).a;
+    float right = texture(tex, uv - vec2(destUV.x, 0.)).a;
+    float bottom = texture(tex, uv + vec2(0., destUV.y)).a;
+    float top = texture(tex, uv - vec2(0., destUV.y)).a;
+    float result = left + right + bottom + top;
+
+    result = step(0.05, clamp(result, 0., 1.));
+
+    vec4 final_outline_color = vec4(outline_color, 1.0);
+
+    if (use_outline_texture)
+    {
+        vec2 outlineTexUV = transform_uv(
+            uv,
+            outline_texture_scale,
+            outline_texture_offset,
+            true);
+
+        outlineTexUV += mod(TIME * outline_texture_scroll_speed,vec2(1.));
+        outlineTexUV = fract(outlineTexUV);
+        final_outline_color *= texture(outline_texture, outlineTexUV);
+    }
+
+    result *= (1. - color.a) * outline_alpha;
+    vec4 outline = final_outline_color;
+    outline.rgb *= outline_glow;
+    outline.a = result;
+
+    if (only_render_outline)
+    {
+        color = outline;
+    }
+    else
+    {
+        color = mix(color, outline, result);
+    }
+	
+	return color;
+}