a computer program that runs on graphics hardware and provides a high degree of control over how scenes are rendered

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2
votes
1answer
324 views

Trying to implement Camera

I'm trying to implement a Camera class in order to walk and look on the world as follow: #ifndef _CAMERA_H_ #define _CAMERA_H_ #include <glm\glm.hpp> class Camera { public: Camera(); ~...
1
vote
1answer
127 views

White dots artifacts when applying borders to hex tiled geometry

I have a hexagon tiled geometry I created in Blender Which I then load in WebGL, using THREE.js library. Below is the loading code, I've cut the code of creating scene, lights, etc. I create ...
1
vote
2answers
248 views

Fragment shader compiling in webGL but not in OpenGL

I am programming in Haxe (language compiling to multiple platforms) and I have written some shaders. My fragment shader runs fine in html5, but when I try to compile for native (OS X and/or Neko, a ...
4
votes
1answer
127 views

Unity 5 - custom lighting model

I have tried to use my own lighting model in surface shader in Unity. But there is a problem. If I init my own lighting via #pragma surface surf _SimpleSpecular Lighting_SimpleSpecular method is ...
6
votes
2answers
142 views

Is there a way to make the boundary between materials wavy?

I have a sea trading game that I'm working on developing. Right now, my world looks like this: There are 4 different "biomes", with more to be added. Internally, this is a large mesh which has 4 ...
0
votes
0answers
30 views

Lens Distortion not working with Unity 5.3.5

I have downloded the latest sdk from this link https://github.com/googlevr/gvr-unity-sdk I imported the package into my project.From the prefab added GvrMain to my scene and set the Distortion ...
1
vote
0answers
24 views

Models keep turning white - Unity 5.3.5p1

I'm using Unit 5.3.5p1 but for some reason my models randomly turn white after I build an exe to run outside the editor. The textures work perfectly fine within the editor, but as soon as I build and ...
0
votes
1answer
22 views

XNA HLSL Shader Color Swapping based on lightness

I'm trying to achieve a similar effect to the image below in HLSL. [Ignore the inbetween state, currently I'm only trying to achieve the final phase, which is black and red] What I tried so far is ...
16
votes
0answers
529 views

How can I get PagedGeometry grass to receive shadows?

I made the switch to Ogre3D (v1.7) and to using PagedGeometry. What I'm trying to do is make a simple scene with a terrain, some trees and grass. In a nutshell, I would like to achieve this kind of ...
1
vote
0answers
20 views

Keeping a mesh entirely at the GPU and changing its vertices there with a ComputeShader (Unity5)

In a Unity game I have an object whose mesh is made of around 10k vertices and I have to make changes to these vertices (position, color, etc) almost every frame. Considering that such object is ...
0
votes
0answers
25 views

Frustum Culling behaves incorrectly with vertex shaded objects

I have a scene with a straight path. It looks something like this: I've also wrote a vertex shader that bends the path. After applying the shader, it looks something like this: If you were to ...
-1
votes
2answers
124 views

What is the most efficient way to render water?

Would I create the water surface mesh in C++, and control the movement/animation in the CPU, and afterward apply any shaders (reflect/refraction/caustics/etc..). Or should I only create the mesh in C++...
0
votes
2answers
30 views

What does this shader error in Löve2D mean?

What could I've done wrong to get the following error message when trying to create a GLSL shader in Löve2D? I'm sincerely clueless of what the mistake could be, though I suspect the error being a ...
0
votes
1answer
57 views

How to calculate 2D viewport coordinates in a shader?

In Unity, I use the following shader to calculate 2D viewport coordinates : Shader "Foo" { SubShader { Pass { CGPROGRAM #pragma vertex vert ...
1
vote
0answers
18 views

Simple coherent noise function to use in a GLSL shader

I'm looking for a simple (but especially fast) coherent noise function to use it in a shader written in GLSL. I don't need it to be excessively smooth or good looking, I just need that it has the ...
1
vote
1answer
52 views

Unity Surface Shader: Conditinally noforwardadd

I'd like to have this in my shader: #if SHADER_API_MOBILE #pragma surface surf Lambert noforwardadd #else #pragma surface surf Lambert #endif But this tries to compile both #pragma surface and ...
0
votes
1answer
15 views

unity shader : Applying ZOrder to sprite renderer conditionally

here's scene object info of above figure. all of object's renderer is 'SpriteRenderer', and Material is 'Sprites-Default'. [A (Car)] OrderInLayer : 302 Local Z Position : -9.8 [B (Land)] ...
1
vote
2answers
815 views

Using GrabPass for 2D water reflection?

I'm trying to achieve some neat 2d water reflection effect with Unity, something like this: What I've managed to accomplish so far: The problem is GrabPass captures the entire screen but I really ...
0
votes
1answer
42 views

HLSL SetVertexShader Texture2DArray Sample

I want to do some texture samples in the vertex shader, but it seems this cannot be done in the same was as when using the Pixel shader. The code is basically.. Texture2DArray gTexture; VS() { ...
-6
votes
1answer
66 views

Is this shader can exist in Unity?

'Front' and 'back' are all SpriteRenderer. Do you have a Shader these things that will be present in the Unity?
0
votes
1answer
31 views

Gaussian blur spritesheet/texture atlas without clipping edges

I'm trying to apply a Gaussian blur to a shadow to soften them a bit. I can apply the blur fine, but the problem is that I end up with this: Instead of this: Which isn't great. The image is part ...
0
votes
0answers
41 views

How do I make an object not appear grey regardless of distance?

My moon texture is on a plane 500m away and I would like to know if there is a way to keep displaying the texture: As opposed to it turning grey as pictured here: regardless of the distance it is ...
3
votes
2answers
777 views

Stencil based mask with alpha

I'm trying to create a fog effect like civ 5: I tried creating a StencilSet shader that receives a mask and sets the stencil buffer to 1. I would render the following on every unexplored tile using ...
1
vote
0answers
17 views

OpenGL ES 2.0 not drawing images with shadows

I'm using OpenGL ES 2 to program a simple game 2D for Android mobile phones. I'm coding the rendering portion of the software, using the GLES20 default library. All my sprites are rendered from a ...
2
votes
2answers
136 views

HLSL texture not reading from register S1

I made a simple post processing shader, that draws scanlines. This all works perfectly. I wanted to make it a bit more interesting by applying a shadowmask instead so I wanted to pass a texture to the ...
0
votes
1answer
740 views

Will Vulkan Kill the use of GLSL? [closed]

After reading this link I am still unclear as to the shading language support in Vulkan. As Vulkan only supports SPIR-V is it the case that GLSL is therefore being phased out? Are there any ...
3
votes
1answer
54 views

Matte reflection effect in Unity?

I'm trying to achieve that kind of scene but in real time using Unity. It's basically composed of some primitives, a skybox, and a plane. I'm intrigued on how to do this effect in particular: ...
2
votes
1answer
173 views

Unity5 - A Shader to blur far plane edges?

I need some help. In my Unity5 game I'm using two cameras, First camera renders the actual terrain and game objects (wich has a far plane of a 1000 units) and the Second camera renders a 3d skybox of ...
0
votes
1answer
55 views

Why is my custom shader rendering completely transparent?

I'm currently trying to learn how to write shaders, so I'm getting my feet wet with Unity's Shaderlab format. One of the first things I tried was to write a surface shader that supports vertex colors ...
0
votes
1answer
48 views

Iris-wipe shader not properly working

I'm working on creating an iris wipe transition, like the ones you see in old cartoons - a fully transparent circle closes on a certain point, leaving a full screen of a solid color. Additionally, the ...
1
vote
1answer
73 views

Rendering issues in Monogame when using shaders

I am currently fiddling with Monogame, trying to work with Shaders and I have encountered a really weird issue. If the first ever draw in the application's lifetime is with a custom shader all further ...
1
vote
1answer
144 views

What causes still objects have lines in them when lighting is being changed? [duplicate]

First, here is what I'm talking about (I changed the contrast to make it more visable, since it's not really visible in still images): Ingore the chat box, I was spamming buttons to see which one ...
1
vote
0answers
25 views

In Unity shaders, how is IN.worldRefl calculated?

I want to know how the world reflection vector in shaders is calculated so that I can manipulate it, but there is no documentation on what it does or how Unity calculates it. How is the reflection ...
1
vote
1answer
39 views

Implementing my own UI sprite class in Unity using shaders: where and how to position the sprites

For learning purposes, I am trying to implement my own UI classes in Unity "from scratch", in the GPU using shaders. I mean, I am trying to use simple 2D sprites either positioned via shaders or ...
1
vote
0answers
26 views

HLSL topology mismatch question

I'm trying to write a fur shader with the shells & fins technique. Currently I receive this DirectX error D3D11 ERROR: ID3D11DeviceContext::DrawIndexed: The declared input primitive type in ...
0
votes
1answer
58 views

GLSL - Only draw arond point / flashlight effect

I'm currently trying to achieve a sort of flashlight effect in GLSL. I only want to draw textures within a certain distance of a specified point (the mouse position, for example). Here's a quick ...
2
votes
0answers
38 views

Is there a way to identify, within a shader, the current GPU thread ID?

My question is rather simple: within a shader, is there a way (that works both in DirectX and OpenGL) to retrieve the ID of the given GPU thread being executed at the given iteration? I am using ...
3
votes
0answers
105 views

Particle-system in the GPU in Unity: how to load/store data from/to a texture in the shader?

I have been implementing a simple GPU-based particle system in Unity, for my current game. The setup is indeed not very elaborated: the shader receives a set of coordinates passed trough the position ...
3
votes
2answers
219 views

Bullet holes on curved surfaces and corners

So right now I am making an FPS game where the gun creates bullet holes (plane with texture) on impact, but there is a problem with that, if I shoot at the edge the plane will stick out and also ...
8
votes
2answers
9k views

shader tutorial for unity [closed]

I would like to start developing my own shaders within unity. For starters I would like to do a screen spaced blur. Are there any good tutorials to learn shader development besides the official ...
2
votes
0answers
27 views

DirectX 11 - Problem with low resolution decals

I'm trying to add a decal system in my DirectX engine but i'm facing some problems with the quality of the textures projected. Every other no decal texture look fine, but these ones look really bad. ...
0
votes
0answers
22 views

How to apply individual colours in a fragment shader?

I'm trying to write my own shader. Within the target mesh I have assigned the following attributes in a script: mesh.vertices = points; mesh.colors = colours; //Each element of the array hold a ...
1
vote
1answer
71 views

How to get color or value from material with shader?

I have a sphere with a shader with colors for specific heights and I want to get the value at the cursor(height) or color of the point the cursor is on when clicked. Is there a good way to get this ...
0
votes
0answers
40 views

Linear gradient shader ( Photoshop-like)

I'm searching a way to implement a linear gradient shader that behaves as the linear gradient in Photoshop (only the vertical case is necessary). It will be applied to 2D sprites. Currently I'm ...
2
votes
1answer
55 views

Shader only rendering 1/4th of the screen

I've asked the same question on SO here and they suggested I should ask here instead. I'm currently trying to create a gaussian blur shader, and while I've successfully created the blur effect my ...
4
votes
0answers
81 views

Depth of Field Blur - Weighted sampling?

I've been studying Intel's fantastic article titled "An investigation of fast real-time GPU-based image blur algorithms" (here), where-in they state that Gaussian blur would need to be customized for ...
0
votes
0answers
30 views

Low intensity of projector in dark enviornments

I am using light Projector as Headlight for player bike....The thing happening is the intensity of projector reduces in dark environment whereas in normal sunny day projector brightness is proper ,. ...
0
votes
1answer
35 views

GLSL uniform array with size set by another uniform

Will the follwing GLSL code work? #version 330 uniform int size; uniform float[size]; void main() { //do something }
3
votes
1answer
74 views

Upgrading Unity from 5.1 to 5.3.4 has broken game, specifically models made in Blender

I recently decided to upgrade Unity after putting it off for some time as I have a rather sizable project started in 5.1. I knew there would be some hurdles, however, I have had very little luck in ...
6
votes
1answer
489 views

How is Signed Distance Field Ray Marching implemented for a dynamic world?

I think I understand the basics of Signed Distance Field Ray Marching. You model your scene with a bunch of distance fields (such as these: http://iquilezles.org/www/articles/distfunctions/...