Fix white outline being produced on sprites with semitransparent borders

Author: Chrezm

DROButtonMaker.yyp

@@ -5,7 +5,7 @@ if (mode == 1 or mode == 3) {
 		surface = surface_create(cam_w(0), cam_h(0))
 	}
 	surface_set_target(surface);
-	draw_clear_alpha(c_white, 0);
+	draw_clear_alpha(c_black, 0);
 	surface_reset_target();
 
 	var size = objButtonGenerator.target_size;
@@ -60,5 +60,7 @@ if (mode == 1 or mode == 3) {
 	alarm[0] = 1;
 	var _vx = cam_x(0);
 	var _vy = cam_y(0);
+	gpu_set_blendmode_ext(bm_one, bm_inv_src_alpha);
 	draw_surface(surface, _vx, _vy);
+	gpu_set_blendmode(bm_normal);
 }

objects/objButtonGenerator/Draw_0.gml

@@ -42,6 +42,6 @@ if (objButtonGenerator.mask_name == "") {
 }
 
 draw_text(_x, _y + _gap*8, "Size of frame: " + string(objFrame.width));
-draw_text(_x, _y + _gap*9, "Left coordinate of frame: " + string(objFrame.x));
-draw_text(_x, _y + _gap*10, "Top coordinate of frame: " + string(objFrame.y));
+draw_text(_x, _y + _gap*9, "x coordinate of frame: " + string(objFrame.x));
+draw_text(_x, _y + _gap*10, "y coordinate of frame: " + string(objFrame.y));
 

objects/objController/Draw_0.gml

@@ -9,7 +9,7 @@ if !surface_exists(surface) {
 	surface = surface_create(cam_w(0), cam_h(0))
 }
 surface_set_target(surface);
-draw_clear_alpha(c_white, 0);
+draw_clear_alpha(c_black, 0);
 var _vx = cam_x(0);
 var _vy = cam_y(0);
 var _vw = cam_w(0);
@@ -24,7 +24,9 @@ if (sprite_height < _vh) {
 }
 draw_sprite(sprite_index, image_index, x - _vx + _small_x_offset, y - _vy + _small_y_offset);
 surface_reset_target();
+gpu_set_blendmode_ext(bm_one, bm_inv_src_alpha);
 draw_surface(surface, _vx, _vy);
+gpu_set_blendmode(bm_normal);
 
 // Surface for zoom
 if (!draw_zoom) {
@@ -38,4 +40,6 @@ draw_clear_alpha(c_white, 0);
 surface_reset_target();
 surface_copy_part(zoom_surface, 0, 0, surface, mouse_x-_vx-40, mouse_y-_vy-40, 80, 80);
 surface_copy_part(zoom_surface, 0, 0, objFrame.frame_surface, mouse_x-40, mouse_y-40, 80, 80);
+gpu_set_blendmode_ext(bm_one, bm_inv_src_alpha);
 draw_surface_stretched(zoom_surface, _vx+_vw-200, _vy, 200, 200);
+gpu_set_blendmode(bm_normal);

objects/objImageDisplay/Draw_0.gml

@@ -5,13 +5,12 @@ if (character_name != "") {
 	if !surface_exists(preview_surface) {
 		preview_surface = surface_create(cam_w(0), cam_h(0));
 	}
-	surface_set_target(preview_surface);
-	draw_clear_alpha(c_white, 0);
-	surface_reset_target();
-	
 	var _x = cam_x(0) + cam_w(0) - preview_size;
 	var _y = cam_y(0);	
-		
+	surface_set_target(preview_surface);
+	draw_clear_alpha(c_black, 0);
+	surface_reset_target();
+			
 	if (sprite_exists(background_sprite)) {
 		draw_scaled(preview_surface, background_sprite, _x, _y, preview_size, preview_size);
 	}
@@ -46,5 +45,12 @@ if (character_name != "") {
 
 	var _vx = cam_x(0);
 	var _vy = cam_y(0);
+	
+	//lay_id = layer_get_id("Background");
+	//back_id = layer_background_get_id(lay_id);
+	//layer_background_blend(back_id, );
+
+	gpu_set_blendmode_ext(bm_one, bm_inv_src_alpha);
 	draw_surface(preview_surface, _vx, _vy);
+	gpu_set_blendmode(bm_normal);
 }