Add show in shader instead of sf::Vertex

2 files changed, 11 insertions, 8 deletions

diff --git a/shaders/rounded_rectangle.glsl b/shaders/rounded_rectangle.glsl
index 956e28e..8c379b7 100644
--- a/shaders/rounded_rectangle.glsl
+++ b/shaders/rounded_rectangle.glsl
@@ -5,18 +5,21 @@ uniform vec4 band_color;
 uniform vec2 resolution;
 
 float rounded_rect(vec2 coord, vec2 size, float r) {
-	return smoothstep(0.0, 2.0, length(max(abs(coord) - size, 0.0)) - r);
+	return length(max(abs(coord) - size+r, 0.0)) - r;
 }
 
 void main() {
+    vec2 shadow_offset = vec2(20.0, 20.0);
     vec2 uv = gl_TexCoord[0].xy * resolution;
     vec2 center = resolution * 0.5;
-    vec2 size = resolution * 0.5;
+    vec2 size = (resolution - shadow_offset * 2.0) * 0.5;
 
-	float a = clamp(rounded_rect(uv - center, size - radius, radius), 0.0, 1.0);
+    float rect_dist = rounded_rect(uv - center, size, radius);
+    float a = 1.0 - smoothstep(0.0, 2.0, rect_dist);
     // same as: if(uv.x >= band_pos.x && uv.x <= band_pos.x + band_size.x && uv.y >= band_pos.y && uv.y <= band_pos.y + band_size.y)
     vec2 band_blend = step(band_pos, uv) - step(band_pos + band_size, uv);
     vec4 front_color = mix(gl_Color, band_color, band_blend.x*band_blend.y);
-    front_color.a *= (1.0 - a);
-    gl_FragColor = front_color;
+    float shadow_a = 1.0 - smoothstep(0.0, shadow_offset.x, rect_dist);
+    front_color.a *= a;
+    gl_FragColor = mix(front_color, vec4(0.0, 0.0, 0.0, 0.135), shadow_a - a);
 }
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diff --git a/shaders/rounded_rectangle_mask.glsl b/shaders/rounded_rectangle_mask.glsl
index a4546e3..8cbe0fc 100644
--- a/shaders/rounded_rectangle_mask.glsl
+++ b/shaders/rounded_rectangle_mask.glsl
@@ -3,7 +3,7 @@ uniform float radius;
 uniform vec2 resolution;
 
 float rounded_rect(vec2 coord, vec2 size, float r) {
-	return smoothstep(0.0, 2.0, length(max(abs(coord) - size, 0.0)) - r);
+	return length(max(abs(coord) - size+r, 0.0)) - r;
 }
 
 void main() {
@@ -12,7 +12,7 @@ void main() {
     vec2 size = resolution * 0.5;
 
     vec4 texture_color = texture2D(texture, gl_TexCoord[0].xy);
-	float a = clamp(rounded_rect(uv - center, size - radius, radius), 0.0, 1.0);
-    texture_color.a *= (1.0 - a);
+    float a = 1.0 - smoothstep(0.0, 2.0, rounded_rect(uv - center, size, radius));
+    texture_color.a *= a;
     gl_FragColor = texture_color;
 }
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