3, Shader Graph introduces a new Master Node for the High Definition Render Pipeline (HDRP). Further reading. DeviantArt is the world's largest online social community for artists and art enthusiasts, allowing people to connect through the creation and sharing of art. Define mask. Photoshop® contains powerful Alpha Channel manipulation features. Prerequisites. See the css opacity property for more information. 6 (302 ratings) Course Ratings are calculated from individual students' ratings and a variety of other signals, like age of rating and reliability, to ensure that they reflect course quality fairly and accurately. To create a custom tree in Unity, create a new Tree GameObject by selecting GameObject > Create Other > Tree from the main menu. This is the basic Alpha value. "Shader Forge has completely changed my outlook on working with Unity; As an artist, having the power to create my own shaders without learning code is an absolute must, and with SF I discovered a tool that goes above and beyond every other node-based editor". Add Alpha Channel: An alpha channel is automatically added into the Channel Dialog as soon as you add a second layer to your image. If you are looking for more seamless textures, I’d recommend checking out FreeVector. If you still want to know more. This is called Order Independent Transparency, or OIT. When combining masks that have semi-transparent areas, either because the opacity of the masks is less than 100% or, as in the examples shown here, because the edges are heavily feathered, you may not want densities to have a linear relationship, building them up. Also, it can be fully transparent and supports Unity Masks. OK, I Understand. shader Shader "Zack/Controlled Mask" { Properties { _MainTex ("Original (RGB)", 2D) = "white" {} _Mask ("Mask", 2D) = "white. See the css opacity property for more information. To use the unity layer mask you need to use the instruction or contact the professionals. An open and tightly integrated solution, it provides a familiar and consistent development environment that seamlessly blends with Unity's UI conventions and Shader use. Can anyone confirm that there isn't ingame support for this, or am I just using the wrong shader? It's Cubed, by the way. Preventing additive blending of transparent Unity sprites Let's say you have two overlapping circles. #raleigh #carnival #caribmask2019 #caribmask2018 #raleigh #nc #party #carnival2019 #rdu #costumes #kerwindubois #vibes #goodvibes #mainstage #steelpan #mic #stage #jumpandwave #livemusic #cary #durham #. Transparent Textures. Scenario: several objects (o1, o2,. By continuing to use Pastebin, you agree to our use of cookies as described in the Cookies Policy. Unity creates sprite meshes for you — they reduce the amount of overdraw by simply not drawing transparent pixels. But what frustrated me the most was the fact there is no global Opacity parameter for all of the brushes that you can change while painting, like you would with brush size, something that is present in every single piece of painting software out there. The instruction is attached to the mask upon receipt. This is a simple online pixel art editor to help you make pixel art easily. …The first thing that I want to do is…I want to toggle off the visibility for the clouds…and the waterfall and I want to. Even though both PNG and GIF formats can produce transparent effects, the PNG format really has three main advantages over GIF: alpha channels (variable transparency), gamma correction (cross-platform control of. One of the great things about using the techniques in this tutorial is you can easily create a seamless texture or background without having to add a mask out nor make sure it will fit your artwork properly. For Tumblr, Facebook, Chromebook or Your WebSite. DrawTexture. I had to take it apart piece by piece before I found that it was the opacity clip. Using Unity 2017. Over the past several years working in Unity many of my projects have involved some kind of mixed reality, augmented reality, transparent MovieTexture, or something of the sort. Translucent objects that are modelled using alpha-test textures will also be aliased due to alpha testing. This object will be drawn just after regular opaque objects, and will prevent subsequent objects from being drawn behind it. #raleigh #carnival #caribmask2019 #caribmask2018 #raleigh #nc #party #carnival2019 #rdu #costumes #kerwindubois #vibes #goodvibes #mainstage #steelpan #mic #stage #jumpandwave #livemusic #cary #durham #. Make sure the Opacity is 100% and the foreground colour is black. 3dsmax and Unity seem to render smaller numbered vertex behind higher numbere…. opacity_texmap = OpacityMap[1] Then on your Macroscript window go File-Save and close the editor. spine-unity works in Unity without the need for any other plugins. This mode is purely for the new Unity UI. As seen in the viewer, the Color Ramp node puts out a mask that is fully transparent where the image is black. The resulting image may contain aliasing along the edges of transparent objects or edges within textures, although the image quality will be no worse than it would be without any anti-aliasing. Let's assume that your world has a lot more water than it does dirt, so the cheapest way you can do this is by checking each dirt block to see if it's next to water, and not vice versa. OK, I Understand. f1 vs TexturePacker 4. Add a window effect to your game, mask a bigger image to another shape, or turn it into a full scrolling background. Black is zero, so Color Ramp uses the color at the left end of the spectrum, which we have set to. Once you open a sprite resource, you can edit its collision mask, which is the area that GameMaker: Studio uses to calculate when two instances are in collision or not and trigger a collision event. Q: How to apply transparent gradient to image?. Press the Play button. Tile masks are as old as the mountains, and are based on a simple idea. (With tiff, the alpha is a channel). Objects and textures rendered as compositor layers render at the frame rate of the compositor, the refresh rate of the HMD, instead of rendering at the application frame rate. Over the past several years working in Unity many of my projects have involved some kind of mixed reality, augmented reality, transparent MovieTexture, or something of the sort. I wanted the colors to suggest a cool, magical ambiance. Note that although the scene here is monoscopic, the rendering on your phone will be stereo. To use the unity layer mask you need to use the instruction or contact the professionals. By continuing to use Pastebin, you agree to our use of cookies as described in the Cookies Policy. DrawTexture, as it is an easy and straightforward way to achieve our goal. You should see the layer. Is it possible?. And obviously you can bake the Normal Map and Ambient Occlusion as usual. And obviously you can bake the Normal Map and Ambient Occlusion as usual. – Works with Unity indie & pro If i use a png texture with transparency then it behaves like a mask. The decimal representation of these numbers are 186, 3, and 2. The unity layer mask is designed to perform the same functions. OK, I Understand. Photoshop handles transparency and alpha channels separately. But any mask, whatever it is, is needed in order to hide something or help in something. The problem is that the Z buffer prevents OpenGL from drawing pixels that are behind things that have already been drawn. 25 (October 2004), pamcomp did not recognize the transparency information in a PAM image -- it just ignored it. Now we are going to create the Occlusion material for the outer box that will hide everything that renders inside of it. For Tumblr, Facebook, Chromebook or Your WebSite. First, make the background transparent (see here for help). This book provides many Unity C# gameplay scripting techniques. Standing on the shoulders of Subtle Patterns. There are 2 wind masks that can be used: Vertex Color Red - ideal for more complex objects where you need more control on where the object is static and where it should be affected by wind. Unity Personal is a great place for beginners and hobbyists to get started. One custom shader that I have reused a lot for these effects is an unlit alpha mask shader. Welcome to UnityPoint Health. This has been a guide to the top difference between Unreal Engine vs Unity. f1 vs TexturePacker 4. I've selected Albedo map which stores the base color of the object in (RGB) channels. マスク側のマテリアルを変更して動的に描いた図形でマスキングすることも可能なはずですが、たとえマスク図形の縁にアンチエイリアス処理を施してなめらかにしても、切り抜かれる側の縁はギザギザになってしまうかと思います。. Prerequisites. The mask-image CSS property sets the image that is used as mask layer for an element. your cutout texture needs to go into the opacity mask slot. Photoshop® contains powerful Alpha Channel manipulation features. Unity provides a component to outline UI objects, but it doesn’t work on world space sprites. Prerequisites. Scenario: several objects (o1, o2,. However, closer inspection of the 4. The difference is Ambient Occlusion storage. To create a custom tree in Unity, create a new Tree GameObject by selecting GameObject > Create Other > Tree from the main menu. You should see the layer. How to Create a Transparent Background in Photoshop. Caribmask August 24,2019 downtown Raleigh NC. We'll see here one of the simplest way to proceed. This new lighting model simulates the natural interactions of light rays and real-world materials. Works with Unity 5 , Unity 2017 and Unity 2018. Standing on the shoulders of Subtle Patterns. Unity dojo amplifyshadereditor101_jpn-jp 1. Alpha Mask is a simple component used for alpha masking, similar to Flash or Photoshop. You can tell it to treat the alpha channel as transparency or as alpha (the difference being that if it's transparency then all the pixels that are fully transparent have their colour optimised out for compression, so probably not the result you're after - alpha keeps the colour even if it's alpha value is 0). You can't change the alpha value directly, so instead you need to create a Color variable and fill it with the sprite's colour information. DrawTexture, as it is an easy and straightforward way to achieve our goal. In this case, you can Add an Alpha channel with this command. Once you open a sprite resource, you can edit its collision mask, which is the area that GameMaker: Studio uses to calculate when two instances are in collision or not and trigger a collision event. Learn how to use masks to hide and reveal portions of layers in Adobe Photoshop. Preview the demo scene in Unity. DrawTexture. Hey there,I have some images that make it pretty clear what is happening but I'm trying to get my universal shader to work with lightmapping. Application unity layer mask. t — Made with Unity DirectX Ray Tracing in Unity 2019. In order to construct. I see a lot of water shaders with all sorts of techniques for doing ripples when objects interact. First, we will need an appropriate background for those semi-transparent pixels so that when Unity imports the file, it won’t default the background color to white. Unity Technologies is the first time a game design tool has ever been nominated for this award. It combines the shader code of Section “Textured Spheres” with concepts that were introduced in Section “Cutaways” and Section “Transparency”. Opacity Clip is a way of controlling if the current pixel/fragment should draw or not. Even though both PNG and GIF formats can produce transparent effects, the PNG format really has three main advantages over GIF: alpha channels (variable transparency), gamma correction (cross-platform control of. - [Narrator] Layer masks are a key feature of Photoshop…that allow us to non destructively hide and show…selective portions of our image. This book also helps programmers explore multimedia features. By continuing to use Pastebin, you agree to our use of cookies as described in the Cookies Policy. 6 was largely dominated by its new UI system. The instruction is attached to the mask upon receipt. Buy dive masks, snorkeling masks, Masks With Optical Lenses, Full Face Diving Masks & diving Purge masks at Scuba. We have set the Color Ramp node to a purely transparent color on the left end of the spectrum, and a fully Red color on the right. Photoshop® contains powerful Alpha Channel manipulation features. : ControlledMask. The file will need to have a transparent layer, which can be achieved in two ways. Product successfully added to your shopping cart. 1 or higher, you can use Polybrush to paint the mask directly in Unity. In this live training session we will learn the fundamentals of authoring shaders for Unity and you will learn how to write your very first shader. enum RenderingMode { Opaque, Cutout, Fade, Transparent} The settings for Transparent mode are the same as for Fade, except that we have to be able to add reflections regardless of the alpha value. (With tiff, the alpha is a channel). Scenario: several objects (o1, o2,. We'll learn how to create a transparent image with Alpha Channel from a standard image. Press the Play button. Drawing and System. Learn how to use masks to hide and reveal portions of layers in Adobe Photoshop. If you omit this, you can see the transparency change, live, during the next step. Soft Mask is a component for Unity3D that masks UI elements. The opacity attribute specifies the transparency of an object or of a group of objects, that is, the degree to which the background behind the element is overlaid. What blending is and how it is specified in Unity. マスク側のマテリアルを変更して動的に描いた図形でマスキングすることも可能なはずですが、たとえマスク図形の縁にアンチエイリアス処理を施してなめらかにしても、切り抜かれる側の縁はギザギザになってしまうかと思います。. I didn’t set the alpha/opacity on the material itself, I was under the incorrect impression the alpha mask texture influence would alone create the effect. This will prevent the paper mask from tearing easily when worn. 0 before Unity switched to nice physical-based lighting shaders for it's terrain material. Saving Images with Transparency There are two different approaches used by graphic file formats for supporting transparent image areas: simple binary transparency and alpha transparency. The coolest thing would be to reproduce the skin substance so it could generate inside Unity. Soft Mask is a component for Unity3D that masks UI elements. In this page you can download high-quality free Unicorn PNG Images, pictures, pics, photos in different style, size and resolutions. Apparently my issue in blender was also the issue with my material in Unreal as well. Autodesk interactive transparent shader Important: This page is still a work in progress. Unity creates sprite meshes for you — they reduce the amount of overdraw by simply not drawing transparent pixels. Drawing and System. Set it to alpha from grayscale and alpha is transparency. Technical Cisco content can be found at Cisco Community, Cisco. College This website is not sponsored by or affiliated with Unity Technologies. Your texture goes in the first one. If you still want to know more. So, what i want to achieve is to draw on top of that texture. note that, if you save this file with layer mask as a standard tiff without layers, the transparency will be lost, and the transparent portions described by the mask will be white. In practice this means that user can define two sets of masks, one for the visual sky and the other for the lighting. 1 drops today and it includes a number of quality of life improvements based on community feedback. We'll learn how to create a transparent image with Alpha Channel from a standard image. something that is completely invisible. If you want to animate the track matte and fill layers using identical settings, you can precompose them. com, and Cisco DevNet. When combining masks that have semi-transparent areas, either because the opacity of the masks is less than 100% or, as in the examples shown here, because the edges are heavily feathered, you may not want densities to have a linear relationship, building them up. This is the basic Alpha value. Opacity Mask is similar to Opacity, but is only available when using the Masked Blend Mode. 25 (October 2004), pamcomp did not recognize the transparency information in a PAM image -- it just ignored it. You do this by first exporting a colour texture from PS or GIMP with alpha transparency (by applying your mask probably), then use one the KSP/Alpha/Translucent material in Unity. I have a simple PNG image, and I'd like to change the top half so that at the very top the image is completely transparent, with the opacity increasing. In this example, I will use GUI. Substance Painter is the reference texturing app for 3D professionals and enthusiasts. (With tiff, the alpha is a channel). Part 2 was all about animating buttons and actions to make your game. Unity will place the trees on relatively flat areas of your terrain. If the content is not related to 2D/2. The file will need to have a transparent layer, which can be achieved in two ways. How to create a png with transparent background in inkscape? Ask Question Asked 6 years ago. If you'd like to learn more about how Unity can provide a solution to meet your needs, please get in touch. Today's tip comes from my bag of experiences: constructing transparent overlays with OpenCV. You may want to make the background transparent behind an object in the image, so you can add in an alternative background image, this is known as composition. - Hi, I'm Chris Meyer of Chrish design, and welcome to the After Effects Apprentice lesson on creating transparency. 5D game development using the Unity game engine. Color is so crucial in game development. Apparently my issue in blender was also the issue with my material in Unreal as well. Tile masks are as old as the mountains, and are based on a simple idea. Press the Play button. So, when exporting, the program doesn't note the opacity levels - just saves everything with 100% Opacity. Soft Mask is a component for Unity3D that masks UI elements. So, when exporting, the program doesn't note the opacity levels - just saves everything with 100% Opacity. Unity creates sprite meshes for you — they reduce the amount of overdraw by simply not drawing transparent pixels. By continuing to use Pastebin, you agree to our use of cookies as described in the Cookies Policy. In this section we will be making the mini map and then using a mask to shape our mini map into something more appealing then a big oblong on the screen. We'll learn how to create a transparent image with Alpha Channel from a standard image. The unity mask is designed to perform the same functions. Apparently my issue in blender was also the issue with my material in Unreal as well. Death's "Ossein Unity" mask is the first of three products in this on-going collection. Define mask. This tutorial covers various common uses of alpha texture maps, i. The Alpha value of the material is set with the A(lpha) slider in the Material panel. Time to create a slot where the string will go to. If you omit this, you can see the transparency change, live, during the next step. So the method you use depends on the desired result file. It was a sacred law that Masks of Power could not contain the power of multiple elements, for a multi-powered mask would be too dangerous. You should see the layer. Make a new material with this shader and play with the sliders and colours. 04) you can use this method, but it doesn't work any more in 14. If your image has only one layer, this background layer has no Alpha channel. Define mask. Realistically you. If you want to see the opacity of a given point in an image file, follow these steps: Open the Info palette. The unity layer mask is designed to perform the same functions. Unity provides a component to outline UI objects, but it doesn’t work on world space sprites. So the method you use depends on the desired result file. Only part of a graphic should be fully transparent, or there would be nothing to see. Generate your noise texture pattern easy and fast within 3 steps! The ultimate designer tool created by Andrew Ckor. 6 release notes reveals some other interesting changes and improvements, including the announcement that “Stencil buffer is now available in Unity Free”. Editing Collision Masks This section deals with the collision mask editor. You do this by first exporting a colour texture from PS or GIMP with alpha transparency (by applying your mask probably), then use one the KSP/Alpha/Translucent material in Unity. This makes sense, because the mask cuts off everything above 3. Sections of this page. something that is completely invisible. I've rendered a video with a transparent background with similar settings (PNG compressed, saved in. One of my favorite aspects of running the PyImageSearch blog is sharing little bitesize OpenCV tips and tricks that I've learned after nearly 7 years of using the OpenCV library. Input Range can be used to define a wider range of values around input Mask Color to create the mask. I wanted the colors to suggest a cool, magical ambiance. There are 2 wind masks that can be used: Vertex Color Red - ideal for more complex objects where you need more control on where the object is static and where it should be affected by wind. Today's tip comes from my bag of experiences: constructing transparent overlays with OpenCV. Page Transparency See More. For this we have to create a custom mask shader that will occlude geometry behind. : ControlledMask. Some of this would work better if I exported some "masks" from Fuse, a facial hair mask, an eye-teeth mask to split off the specularity…, maybe a make-up layer mask that can be dialed in, or grab from a folder of images…. Open the HelloVR scene. If you have Googled this question before you will likely have seen that using a depth masking shader is your best bet to "cut" a hole into the terrain. Unity dojo amplifyshadereditor101_jpn-jp 1. Hope that helps. Question by recon472 · Aug 29, 2014 at 03:56 PM · c# camera transparency mask Make part of a camera viewport invisible/transparent Hi, I would like to make a texture or a mesh which would cover part of a camera and that part of the camera would be transparent so other camera would be visible underneath. In this blog post we will look at what file formats can save images with a transparent background. 1 drops today and it includes a number of quality of life improvements based on community feedback. In the Game view you should see a rendered demo scene. • Easy to use: just drop it on the Game Object in the same way as Unity's standard Mask. Replace the line with this one theMultiMat[theMultiMat. 5D game development using the Unity game engine. "If I want to look from only one perspective, why do I need more than one camera?". This mode is purely for the new Unity UI. Majora's Mask (ムジュラの仮面, Mujura no Kamen) is a recurring item in the The Legend of Zelda series. But any mask, whatever it is, is needed in order to hide something or help in something. It is also very easy to integrate into your own Unity projects. Over the past several years working in Unity many of my projects have involved some kind of mixed reality, augmented reality, transparent MovieTexture, or something of the sort. How to Create a Transparent Background in Photoshop. Substance Painter is the reference texturing app for 3D professionals and enthusiasts. Our shaders will be slight modifications on Unity's standard sprite shader to add the stencil operations. Q: How to apply transparent gradient to image?. your cutout texture needs to go into the opacity mask slot. Thanks to the node group you can bake Albedo, Metallic, Roughness/Smoothness, Emission, Alpha Transparency, a Detail Mask and a Detail Mask with the Alpha channel of the Detail Albedo baked in to the mask. This page demonstrates how to use Adobe Photoshop to create a transparent background. Then, use the Color Picker tool to select the background color, which becomes the foreground color in Toolbox. Opacity Masks are gray-scale Maps applied against individual paths/objects only. Does anybody know how to enable the transparent window title bar in Ubuntu 14. For Tumblr, Facebook, Chromebook or Your WebSite. In this blog post we will look at what file formats can save images with a transparent background. To make the transparency change more visible, you can decrease GlassWallMaterial’s alpha value. The result produces a 32 BPP (Bit Per Pixel) transparent image. Transparency from an existing PNG can be edited in Photoshop by creating a layer mask from the transparency data (see steps below). This book also helps programmers explore multimedia features. One of my favorite aspects of running the PyImageSearch blog is sharing little bitesize OpenCV tips and tricks that I've learned after nearly 7 years of using the OpenCV library. Hello! I got a kinda strange problem about the transparency/opacity channel in Substance Painter and Unity. 0 before Unity switched to nice physical-based lighting shaders for it's terrain material. In order to construct. The term transparency is used in various ways by different people, but at its simplest there is "full transparency" i. In this page you can download high-quality free Unicorn PNG Images, pictures, pics, photos in different style, size and resolutions. Opacity Mask ( Transparent Render Type ): The Opacity Mask requires a shader with its Render Type set to Transparent or a Masked Blend Mode, and works similarly to Opacity in the sense that it takes in a value between 0 and 1, from complete transparency to full opacity, but without considering the values in-between, resulting in either. Unity will place the trees on relatively flat areas of your terrain. Caribmask August 24,2019 downtown Raleigh NC. By continuing to use Pastebin, you agree to our use of cookies as described in the Cookies Policy. You should see the layer. If you still want to know more. This mode is purely for the new Unity UI. The Alpha value of the material is set with the A(lpha) slider in the Material panel. In this episode we will make our shader transparent and look at the purpose of the render queue and blend modes. Use The Performance Profiler. July 27, 2018 Title 29 Labor Parts 1911 to 1925 Revised as of July 1, 2018 Containing a codification of documents of general applicability and future effect As of July 1, 2018. To use a file with a transparent background on the web you will need to save the file out as a png with a transparent background. By continuing to use Pastebin, you agree to our use of cookies as described in the Cookies Policy. One of the great things about using the techniques in this tutorial is you can easily create a seamless texture or background without having to add a mask out nor make sure it will fit your artwork properly. Alpha Mask is a simple component used for alpha masking, similar to Flash or Photoshop. One of my favorite aspects of running the PyImageSearch blog is sharing little bitesize OpenCV tips and tricks that I’ve learned after nearly 7 years of using the OpenCV library. College This website is not sponsored by or affiliated with Unity Technologies. So people had to make appropriate. Page Transparency See More. Buy dive masks, snorkeling masks, Masks With Optical Lenses, Full Face Diving Masks & diving Purge masks at Scuba. 1 or higher, you can use Polybrush to paint the mask directly in Unity. Improved Broadband Near-Unity Light Transparency of a Metal Layer With Film-Coupled Dual Plasmonic Arrays. Transparency. Caribmask August 24,2019 downtown Raleigh NC. Pixel Art Maker. When combining masks that have semi-transparent areas, either because the opacity of the masks is less than 100% or, as in the examples shown here, because the edges are heavily feathered, you may not want densities to have a linear relationship, building them up. shader Shader "Zack/Controlled Mask" { Properties { _MainTex ("Original (RGB)", 2D) = "white" {} _Mask ("Mask", 2D) = "white. One of the keys to creating interesting composites on multiple images is to cut out portions of images either to draw the viewer's attention to a particular feature of that image or to reveal other imagery behind. News concerning the recent release of Unity 4. One custom shader that I have reused a lot for these effects is an unlit alpha mask shader. Your texture goes in the first one. For Blender Render, select the plane, and under the Materials tab of Properties window, enable Transparency, select Mask and set Alpha to zero: For Cycles Render, select the plane and set its material to Holdout,. How to Create a Transparent Background in Photoshop. But any mask, whatever it is, is needed in order to hide something or help in something. The mask-image CSS property sets the image that is used as mask layer for an element. Works with Unity 5 , Unity 2017 and Unity 2018. #raleigh #carnival #caribmask2019 #caribmask2018 #raleigh #nc #party #carnival2019 #rdu #costumes #kerwindubois #vibes #goodvibes #mainstage #steelpan #mic #stage #jumpandwave #livemusic #cary #durham #. That's when Lighten and Darken modes come into play. I had to take it apart piece by piece before I found that it was the opacity clip. Opacity Clip is a way of controlling if the current pixel/fragment should draw or not. This post will be about achieving a specific effect using the stencil buffer, not a run-down of everything it has to offer. So people had to make appropriate. One custom shader that I have reused a lot for these effects is an unlit alpha mask shader. OK, I Understand. You can export a file from Premiere Pro that includes an alpha channel (transparency). As seen in the viewer, the Color Ramp node puts out a mask that is fully transparent where the image is black. DeviantArt is the world's largest online social community for artists and art enthusiasts, allowing people to connect through the creation and sharing of art. We use cookies for various purposes including analytics. The opacity attribute specifies the transparency of an object or of a group of objects, that is, the degree to which the background behind the element is overlaid. One of my favorite aspects of running the PyImageSearch blog is sharing little bitesize OpenCV tips and tricks that I’ve learned after nearly 7 years of using the OpenCV library. In this example, I will use GUI. Scenario: several objects (o1, o2,. Application unity layer mask. For this we have to create a custom mask shader that will occlude geometry behind. Majora's Mask (ムジュラの仮面, Mujura no Kamen) is a recurring item in the The Legend of Zelda series. X-Ray (or kind of CutOut) Shader With Mouse (using mousecursor position inside shader, compared with worldPos distance) Interesting effect. Page Transparency See More. Mask Opacity channel: Controls the source of the Mask Map opacity. Then, use the Color Picker tool to select the background color, which becomes the foreground color in Toolbox.