roystan's grass shader

17 min ago, Python | transformationMatrixFacing : transformationMatrix; triStream.Append(GenerateGrassVertex(pos, segmentWidth, segmentHeight, segmentForward, float2(0, t), transformMatrix)); triStream.Append(GenerateGrassVertex(pos, -segmentWidth, segmentHeight, segmentForward, float2(1, t), transformMatrix)); triStream.Append(GenerateGrassVertex(pos, 0, height, forward, float2(0.5, 1), transformationMatrix)); float4 frag (geometryOutput i, fixed facing : VFACE) : SV_Target. This helps a lot with shadow bias artifacts on the grass blades, which look like some annoying color banding. Djinnlord 2. To control the density of the grass, tessellation will be used to subdivide the input mesh. Filter. This was amazing! After that, in line 159 I append the tip point and in line 161 I append the second vertex of the point and, in line 163, I make sure to restart the triangle strip. With further modification it is meant to eventually form the basis for an advanced Unity 5 3D platforming framework; art and sound assets excluded of course. Gravzer333. Unity Engine Grass Shader Tutorial Generate grass from an input mesh using a geometry shader, and control the density using tessellation. The fragment shader method is really simple in this pass; it’s just using the “SHADOW_CASTER_FRAGMENT(i)” macro and that’s it, you don’t really need to worry about what that does. 1.2b. Tiph’ (DN) Search. The blade generation algorithm is exactly the same as before, as far as the geometry and placement are concerned. In line 173 starts the actual pass that returns the color of the grass and applies the lighting and shading. The “#pragma target 4.6” helps with the support of the geometry shader, while the “#pragma multi_compile_fwdbase” is needed for the shadow receiving. By LixeiroCharmoso. You can find the Shader on the Unity Asset Store: https://www.assetstore.unity3d.com/#!/content/36335For more information go to http://stixgames.com/ or … This grass tutorial I made uses roystan's tutorial, however I changed it up to be a plane with a texture and also work with URP's lighting and shadows. Uses a geometry shader to generate blades of grass. LixeiroCharmoso. The result is then multiplied by “_LightColor0” (which will give me the color of the directional light taking the intensity into account too) and by the shadow attenuation calculated above. float2 uv = pos.xz * _WindDistortionMap_ST.xy + _WindDistortionMap_ST.zw + _WindFrequency * _Time.y; float2 windSample = (tex2Dlod(_WindDistortionMap, float4(uv, 0, 0)).xy * 2 - 1) * _WindStrength; float3 wind = normalize(float3(windSample.x, windSample.y, 0)); float3x3 windRotation = AngleAxis3x3(UNITY_PI * windSample, wind); // Construct a matrix to transform our blade from tangent space. One thing to note, though, is that now at line 149 I also pass the existing normal vector to the “GetVertex” method for the first point of the new triangle. Infiltrator. In line 200 I get the shadow attenuation and in line 201 I get the result of the Half-Lambert lighting and add the translucency multiplied by the rim and by the red channel of the vertex color to it (so it fades from the top of the blade to the bottom). t * x * x + c, t * x * y - s * z, t * x * z + s * y. t * x * y + s * z, t * y * y + c, t * y * z - s * x, t * x * z - s * y, t * y * z + s * x, t * z * z + c, geometryOutput VertexOutput(float3 pos, float3 normal, float2 uv). There I calculate the direction towards which the grass blade should be offset, by subtracting the position of the grass trampling object (stored in the xyz components of _GrassTrample) from the world-space position of the grass blade tip point. Plus, geometry shaders don’t really work on mobile and Mac (as far as I know), so they’re even less versatile. INSTALLATION: 1. 1 hour ago, We use cookies for various purposes including analytics. But if you really really super enjoyed this post, consider buying me a coffee, or becoming my patron to get exciting benefits! Reply. Supported by 100,000+ forum members. Then, in line 157 I calculate the normals for the tip point using the method I mentioned above: getting the normalized cross product of the vector formed by the 2 base points and the vector formed by the midpoint and tip point. share. News, Help, Resources, and Conversation. You can see these stuff in Roystan’s tutorial too, so this tutorial won’t be the only one on these subjects, it’s just supplementary material. Then I add the result of the ShadeSH9 method, which will give me the color information of the ambient light and the baked light probes of the scene. Then run the game as usual, enable SweetFX with Scroll Lock. Report Save. Add to wish list Remove from wish list. level 1. // unityShadowCoord4 is defined as a float4 in UnityShadowLibrary.cginc. Finally, in lines 166-168 I append the original vertices of the face to the stream, using the original normal vector. In lines 106-110 there’s also the boilerplate random method, same as before. Finally, there’s the “#pragma shader_feature IS_LIT” directive which adds a variant to the shader and uses the “IS_LIT” keyword to toggle between a lit and unlit configuration. You grab the “CustomTessellation.cginc” from, You add a float property called ” _TessellationUniform” to the shader. Guide: Unity Grass Shader by Erik Roystan Ross April 2019 Take a look at a Unity guide by Erik Roystan Ross on how to write a geometry shader to generate blades of grass from an input mesh’s vertices, and use tessellation to control the density of the grass. by Roystan 2 years ago 1 year ago. 0.4b. Original Poster 5 months ago. DirectX 11 Grass Shader. Grass Geometry Shader for Unity. Keep in mind that since we’re in a vertex-(geometry-)fragment shader, it’s not as straightforward to have the grass react to all types of light or to any number of them. The amount the grass blades will be offset when inside the radius of the grass-trampling object. Run ReShadeSetup.exe 3. Shaders Mods offers the best shaders for Minecraft and regularly updated. These posts will never go behind a paywall. More mods by LixeiroCharmoso: Texture d'arme; Son; 5.0 3 671 104 Customizable Wooden AK-47 Texture for Assault Rifle w/ sounds. Get 258 grass 3D materials & 3D shaders on 3DOcean. The “g2f” struct, however, has some additional fields: After that, I redeclare the properties (except for some that are needed for the lighting, so there’s no need to redeclare them in the CGINCLUDE block). 1/15. Later, in lines 215-219 I add the same #pragma directives as before, with the only difference that instead of “#pragma fragment frag” I use “#pragma fragment fragShadow” because I’ll be using a different fragment function. However, there are two additional things we calculate in the geometry shader: The tessellation on the shader is added in the exact same way as it’s added in Roystan’s tutorial: Finally there’s the lighting and shadow side of things: Most of the properties in the shader share the exact same purpose the did in the shader of the first part, so I’ll just be covering the new ones: Starting up, in lines 46 and 48 I have to include 2 cginc files: the one for the tessellation (downloaded from this tutorial by Catlike Coding) and the “Autolight.cginc” which is needed for some information around shadow receiving and it’s a built-in .cginc file, so you don’t have to add it manually like the first one. I won’t go into too much detail here, because a solid 90% is the same as before. This is to ensure that if the grass is not directly lit, it won’t be completely dark but have a smoother falloff. Nope, grass mesh is handmade. Li’s study [1] consists of an implementation of a Meadow (kind of a tree) simulation using vertex shader programming. The original color is then multiplied by the result of that whole operation and it is then returned in line 203. 3. Grass shaders, like water shaders, can be infinitely fun and you can pursue any level of physical accuracy you want, from something toony or stylized to something realistic af. Unrar the contents from 'VibrantRealism.rar' 2. 49 min ago, Java | Assets. The trample offset is then calculated (in line 154) as the normalized result of line 153 in the x and z axes, multiplied by the distance from the center, so that the effect is not applied if the blades are further away from the trampling object. Fritz Copes added Grass shader to In Progress (Fritz) . The “GetVertex” method in lines 92-104 also got some more stuff: Firstly, in line 96I calculate the view direction and store it in the local g2f object and in line 98 I also store the screen position of the vertex. Finally there’s the weird block in lines 100-102. Also, depending on the settings it can get pretty heavy when applied in a whole terrain, so I’d keep an eye out for that too ^^”. Then, in line 99 I store the vertex’s normal, after I convert it from object space to world space. Hi! This Pack of 3D Grass was done to get most low poly models as possible, but using realistic materials. This project uses Roystans Super Character Controller as the foundation for movement and physics. Moving on to the lit block, in line 197 I do a simple Half-Lambert calculation by getting the dot product of the directional light’s direction and the world-space normal vector, which I then multiply by 0.5 and add 0.5 to it. share. To create interest and realism, the blades will have randomized dimensions and rotations, and be affected by wind. Hey Guys, Heres a new tutorial on how to create a Realistic Grass Shader. All Discussions only Photos only Videos only Links only Polls only Events only. Grass Landscape Shader 3D model materials-shaders landscape, formats MAX, C4D, ready for 3D animation and other 3D projects Filtered by: Clear All. Geometry shaders in general are infamous for their not-so-great performance, and this one in particular is not very versatile as it doesn’t have any feature that allows you to have grass in specific areas instead of the whole mesh. It’s important to have the other pragmas though, because the shadow casting pass needs to have the same information about the geometry as the first pass, so that it can cast the shadows properly. *This playable demo is a concept meant to showcase what is possible only, and no further development of it is planned. Tutorial link with full source code. Optifine HD Mod for Minecraft 1.16.4/1.15.2/1.14.4. Determines the amount of tessellation on the mesh. Buy grass 3D materials & 3D shaders from $3. Lines 194 and 195 are the same as the first part, still applying color based on a gradient map, the wind and the “_Color” property. Shadows: The grass will be able to receive shadows using the “SHADOW_ATTENUATION” macro (more on that later). Interactive Grass. return frac(sin(dot(co.xyz, float3(12.9898, 78.233, 53.539))) * 43758.5453); // Construct a rotation matrix that rotates around the provided axis, sourced from: // https://gist.github.com/keijiro/ee439d5e7388f3aafc5296005c8c3f33, float3x3 AngleAxis3x3(float angle, float3 axis). Report this asset. Similarly to the first part, the appdata struct doesn’t really need to hold a lot of info for us, just the vertex position. 13 min ago, PostgreSQL | Efficient Rendering of Grass using Vertex Shaders Taner Mansur 164820 Department of Computer Engineering, Metu, 2009 Survey Papers The papers I will analyze for this study will be generally related with grass rendering using vertex shaders. Pobierz Udostępnij. In this tutorial I show my solution to rendering a lot of grass on a large terrain. GrassFlow : DX11 Grass Shader. The problem with the current setup is that you can’t really define areas where there’s no grass easily. 2.4 (current) 50 054 téléchargements , 2,2 Mo 19 mai 2015 . Pastebin is a website where you can store text online for a set period of time. It’s a very simple demo script and you could do a lot of different stuff for that purpose but here it is: It’s applied on a specific material, however it would probably be better if it was a global property in order to be applied on all different grass materials. Over 11,000 5 star assets. Hacked Terrain and grass shader: post your stats!! 2. Specifically the features we’ll add are: Most of the features, especially the shadow and tessellation stuff, are from Roystan’s grass shader tutorial and they’ve been adjusted to fit the shader from the previous tutorial. The HDR color that’s being added to the grass blades due to translucency. Previous template Next. Hello Harry, thank you for sharing your amazing work! As I mentioned in the previous tutorial, this shader follows a different structure: firstly there’s a CGINCLUDE block that holds the vertex and geometry shaders and all the necessary structs, and then there are 2 passes: one for the color and another one for the shadow casting. new posts. // to local space; this is the same process used when sampling normal maps. Wood texture used on fence model is sourced from CCO Textures. Reply. float3x3 facingRotationMatrix = AngleAxis3x3(rand(pos) * UNITY_TWO_PI, float3(0, 0, 1)); // Matrix to bend the blade in the direction it's facing. 1/15. Better grass; All tweaked to make the game look as real as possible. This post is brought to you by these awesome Patreon supporters: 1. Show. Optifine 1.16.4 and 1.16.3 is one of the most commonly recognized mods … In line 156 the offset is added to the position of the tip point. Also, to add more consistency to the scene, I’m adding the ambient color of the scene to the final color. My journey through video game development. In the previous tutorialwe saw some stuff around geometry shaders, which have a lot of really interesting applications, and grass shaders is one of the most popular ones! DirectX 11 Grass Shader. unityShadowCoord4 _ShadowCoord : TEXCOORD1; // Simple noise function, sourced from http://answers.unity.com/answers/624136/view.html. Then, in line 199 I calculate the fresnel mask using a pretty standard technique: dot product of the view direction and the normal, subtract that from 1.0 and raise it to a power to control its concentration/power. Overview Package Content Releases Reviews. Find this & more VFX Shaders on the Unity Asset Store. 14898 views. Tools. Please set your cookie preferences for Targeting Cookies to yes if you wish to view videos from these providers. 19 min ago, Java | Adjusts the size of the fresnel/rim mask on the grass blades. Add depth to your next project with Interactive Grass from qq.d.y. In line 222 it’s also important to include ” #pragma multi_compile_shadowcaster ” for the shadow casting to actually work. In line 198 I calculate the translucency by multiplying the “_TranslucentColor” property by the dot product of the view direction and the inversed direction of the directional light. Collapse. Grass Landscape Shader 039 Texture. Sorry to bother you, just wanted to let you know that this site uses cookies: My take on shaders: Stylized water shader. float3 tangentPoint = float3(width, forward, height); float3 tangentNormal = normalize(float3(0, -1, forward)); float3 localPosition = vertexPosition + mul(transformMatrix, tangentPoint); float3 localNormal = mul(transformMatrix, tangentNormal); return VertexOutput(localPosition, localNormal, uv); // Geometry program that takes in a single vertex and outputs a blade. Page of 1. The video gets choppy after pressing play, this is a failure in my recorder. Also, in line 187 I’m including “Lighting.cginc” (also built-in, so no manual installation needed) which is needed for some lighting information I’m using. Discussion in 'Works In Progress' started by cod, Jul 14, 2012. level 2. Overview Package Content Releases Reviews. i.normal : -i.normal; float NdotL = saturate(saturate(dot(normal, _WorldSpaceLightPos0)) + _TranslucentGain) * shadow; float3 ambient = ShadeSH9(float4(normal, 1)); float4 lightIntensity = NdotL * _LightColor0 + float4(ambient, 1); float4 col = lerp(_BottomColor, _TopColor * lightIntensity, i.uv.y); float4 frag(geometryOutput i) : SV_Target, Python | By LixeiroCharmoso. Select GTAV.exe 4. Time. The Strauss shader is for modeling metallic surfaces. Normal generation: Since we will light up our grass blades, we need to calculate the normal vector for each vertex of each blade and pass it to our fragment shader. This content is hosted by a third party provider that does not allow video views without acceptance of Targeting Cookies. _TopColor("Top Color", Color) = (1,1,1,1), _BottomColor("Bottom Color", Color) = (1,1,1,1), _TranslucentGain("Translucent Gain", Range(0,1)) = 0.5, _TessellationUniform ("Tessellation Uniform", Range(1, 64)) = 1, _BladeWidthRandom("Blade Width Random", Float) = 0.02, _BladeHeight("Blade Height", Float) = 0.5, _BladeHeightRandom("Blade Height Random", Float) = 0.3, _BladeForward("Blade Forward Amount", Float) = 0.38, _BladeCurve("Blade Curvature Amount", Range(1, 4)) = 2, _BendRotationRandom("Bend Rotation Random", Range(0, 1)) = 0.2, _WindDistortionMap("Wind Distortion Map", 2D) = "white" {}, _WindStrength("Wind Strength", Float) = 1, _WindFrequency("Wind Frequency", Vector) = (0.05, 0.05, 0, 0), #include "Shaders/CustomTessellation.cginc". Télécharger Partager. Before the advent of programmable shaders, deformation animation was only used for … Can cast and receive shadows. Cart. // of grass at that vertex's position, aligned to the vertex's normal. All from our global community of 3D artists. A User Showcase of the Unity Game Engine. The shader I’ll be showing here is more on the stylized side, and is actually completely unlit and unresponsiv… 5 months ago. The “normal” field which will hold the normal vector we calculate for each new vertex, The “_ShadowCoord” field which is needed to calculate the shadow attenuation, The “viewDir” which holds the view direction vector. o.normal = UnityObjectToWorldNormal(normal); o.worldPosition = mul(unity_ObjectToWorld, float4(pos, 1)); // Shadows are sampled from a screen-space shadow map texture. // Extended discussion on this function can be found at the following link: // https://forum.unity.com/threads/am-i-over-complicating-this-random-function.454887/#post-2949326. We compared it with Grass Essentials and we were happy that Grass Free was about 3x faster in Rendering time. Description; Comments (0) Reviews (0) [ 1 Bitmap and Procedural Based Shader ] 1 Color map 1 Diffusion map 1 Luminance map 1 Bump map 1 Displacement map. Apr 15, 2019 - GRASS SWAY in Unity - SHADER GRAPH - YouTube Download Improved Standard Shader Package (includes shaders, textures and Max2010 scene file) Grass Shader This is a grass shader that I've been working on for a little while, and althought it is fairly simple, I believe that it effectively achieves some of the more crucial aspects of grass rendering. The result obviously depends on the work you put in the effect. This content is hosted by a third party provider that does not allow video views without acceptance of Targeting Cookies. I hope you have as much fun with this one as I did! Cancel. I won’t have a separate section for the vertex method because it’s the same as before and it’s still sadly plain: just passing the vertex position to the struct for the geometry shader.
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