create shader example of rounded rect

examples/rounded_rect.glsl

@@ -0,0 +1,137 @@
+
+#pragma shaderfilter set border_top__slider  true
+#pragma shaderfilter set border_top__max  1.00
+#pragma shaderfilter set border_top__min  0.00
+#pragma shaderfilter set border_top__step  0.01
+uniform float border_top = 0.01;
+
+#pragma shaderfilter set border_left__slider  true
+#pragma shaderfilter set border_left__max  1.00
+#pragma shaderfilter set border_left__min  0.00
+#pragma shaderfilter set border_left__step  0.01
+uniform float border_left = 0.01;
+
+#pragma shaderfilter set border_right__slider  true
+#pragma shaderfilter set border_right__max  1.00
+#pragma shaderfilter set border_right__min  0.00
+#pragma shaderfilter set border_right__step  0.01
+uniform float border_right = 0.01;
+
+#pragma shaderfilter set border_bottom__slider  true
+#pragma shaderfilter set border_bottom__max  1.00
+#pragma shaderfilter set border_bottom__min  0.00
+#pragma shaderfilter set border_bottom__step  0.01
+uniform float border_bottom = 0.01;
+
+#pragma shaderfilter set corner_radius_top_left__slider  true
+#pragma shaderfilter set corner_radius_top_left__max  1.00
+#pragma shaderfilter set corner_radius_top_left__min  0.00
+#pragma shaderfilter set corner_radius_top_left__step  0.01
+uniform float corner_radius_top_left = 0.01;
+
+#pragma shaderfilter set top_left_rounded__slider  true
+#pragma shaderfilter set top_left_rounded__max  1.00
+#pragma shaderfilter set top_left_rounded__min  0.00
+#pragma shaderfilter set top_left_rounded__step  0.01
+uniform float top_left_rounded = 0.01;
+
+#pragma shaderfilter set corner_radius_top_right__slider  true
+#pragma shaderfilter set corner_radius_top_right__max  1.00
+#pragma shaderfilter set corner_radius_top_right__min  0.00
+#pragma shaderfilter set corner_radius_top_right__step  0.01
+uniform float corner_radius_top_right = 0.01;
+
+#pragma shaderfilter set top_right_rounded__slider  true
+#pragma shaderfilter set top_right_rounded__max  1.00
+#pragma shaderfilter set top_right_rounded__min  0.00
+#pragma shaderfilter set top_right_rounded__step  0.01
+uniform float top_right_rounded = 0.01;
+
+#pragma shaderfilter set corner_radius_bottom_right__slider  true
+#pragma shaderfilter set corner_radius_bottom_right__max  1.00
+#pragma shaderfilter set corner_radius_bottom_right__min  0.00
+#pragma shaderfilter set corner_radius_bottom_right__step  0.01
+uniform float corner_radius_bottom_right = 0.01;
+
+#pragma shaderfilter set bottom_right_rounded__slider  true
+#pragma shaderfilter set bottom_right_rounded__max  1.00
+#pragma shaderfilter set bottom_right_rounded__min  0.00
+#pragma shaderfilter set bottom_right_rounded__step  0.01
+uniform float bottom_right_rounded = 0.01;
+
+#pragma shaderfilter set corner_radius_bottom_left__slider  true
+#pragma shaderfilter set corner_radius_bottom_left__max  1.00
+#pragma shaderfilter set corner_radius_bottom_left__min  0.00
+#pragma shaderfilter set corner_radius_bottom_left__step  0.01
+uniform float corner_radius_bottom_left = 0.01;
+
+#pragma shaderfilter set bottom_left_rounded__slider  true
+#pragma shaderfilter set bottom_left_rounded__max  1.00
+#pragma shaderfilter set bottom_left_rounded__min  0.00
+#pragma shaderfilter set bottom_left_rounded__step  0.01
+uniform float bottom_left_rounded = 0.01;
+
+
+float4 render(float2 uv) {
+    float4 pixel = image.Sample(builtin_texture_sampler, uv);
+    int closedEdgeX = 0;
+    int closedEdgeY = 0;
+ if (uv.x < border_left || uv.x > 1-border_right){ 
+    pixel.a = 0;
+}
+if (uv.y < border_top || uv.y > 1-border_bottom){ 
+    pixel.a = 0;
+}
+
+
+float top_left_square = border_left+corner_radius_top_left*top_left_rounded;
+float top_left_top_square = corner_radius_top_left+border_top;
+float top_left_x_mov = -top_left_square;
+float top_left_y_mov = +border_top+corner_radius_top_left;
+
+if(uv.y < top_left_top_square  && uv.x < top_left_square){
+	if (length(vec2((uv.x+top_left_x_mov)/(corner_radius_top_left*top_left_rounded),(uv.y-top_left_y_mov)/corner_radius_top_left)) >= 1) {
+	     pixel.a =0;
+
+}
+}
+
+float top_right_square = border_right+corner_radius_top_right*top_right_rounded;
+float top_right_top_square = corner_radius_top_right+border_top;
+float top_right_x_mov = 1-top_right_square;
+float top_right_y_mov = +border_top+corner_radius_top_right;
+
+if(uv.y < top_right_top_square  && uv.x > 1-top_right_square){
+	if (length(vec2((uv.x-top_right_x_mov)/(corner_radius_top_right*top_right_rounded),(uv.y-top_right_y_mov)/corner_radius_top_right)) >= 1) {
+	     pixel.a =0;
+
+}
+}
+
+
+float bottom_right_square = border_right+corner_radius_bottom_right*bottom_right_rounded;
+float bottom_right_bottom_square = corner_radius_bottom_right+border_bottom;
+float bottom_right_x_mov = 1-bottom_right_square;
+float bottom_right_y_mov = 1-border_bottom-corner_radius_bottom_right;
+
+if(uv.y > 1-bottom_right_bottom_square  && uv.x > 1-bottom_right_square){
+	if (length(vec2((uv.x-bottom_right_x_mov)/(corner_radius_bottom_right*bottom_right_rounded),(uv.y-bottom_right_y_mov)/corner_radius_bottom_right)) >= 1) {
+	     pixel.a =0;
+
+}
+}
+
+float bottom_left_square = border_left+corner_radius_bottom_left*bottom_left_rounded;
+float bottom_left_bottom_square = corner_radius_bottom_left+border_bottom;
+float bottom_left_x_mov = -bottom_left_square;
+float bottom_left_y_mov = +border_bottom+corner_radius_bottom_left;
+
+if(uv.y > 1-bottom_left_bottom_square  && uv.x < bottom_left_square){
+	if (length(vec2((uv.x+bottom_left_x_mov)/(corner_radius_bottom_left*bottom_left_rounded),(1-(uv.y+bottom_left_y_mov))/corner_radius_bottom_left)) >= 1) {
+	     pixel.a =0;
+
+}
+}
+
+    return pixel;
+}