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

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1answer
42 views

Unity - drawing halos behind everything else

I would like it so that the halos created by the draw halo parameter in spotlights are drawn behind all other meshes etc, currently it does this very weird thing where halos are sliced in half by ...
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1answer
54 views

Second pass in multipass effect is ignoring

I am trying to render my vertecies in 2 passes, but seems I am doing something wrong, because only one pass applying. I cannot make the second one work despite that second pass is applying. Here is ...
0
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1answer
101 views

Encoding Float to RG/RGBA and Blending

Encoding a float value inside a RG or RGBA texture is very interesting and useful but it is also become quite useless when you use blending as the result and the values might be altered because of ...
0
votes
1answer
71 views

Why has my refractive water shader become reflective

So I was making a water shader in unity and well it looked fine in the scene view but as soon as I went into the game view the refraction texture basically flipped up 180 degrees and made it look like ...
0
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2answers
184 views

GPU optimization question: pre-computed or procedural?

I'm learning shader program and need some general direction. I want to add noise to my laser beam. Which is the best way to handle it? I could pre-compute an image and pass it to the shader. I ...
6
votes
1answer
2k views

Atmospheric Scattering

I'm trying to implement atmospheric scattering based on Sean O`Neil algorithm that was published in GPU Gems 2. But I have some trouble getting the shader to work. I've downloaded sample code of ...
3
votes
2answers
91 views

Unity - Water Cube (to 2D game)

I wonder if you can create a cube of water within the unity! I'm starting to use the Unity, and took a sought as to whether there was already something like this ... but have not found any tutorial ...
0
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1answer
50 views

OpenGL Shaders Ignored

I have been following this tutorial to try and start learning OpenGL. However, upon compiling my code, my triangle turns out to be black. At first I thought that there was something wrong with the ...
0
votes
1answer
28 views

UNITY3D - Orthographic Camera not render SHADER (2D GAME)

I have a problem with camera render, see the video please :) (note.: sorry for the music) http://youtu.be/BB8rXIzIWVU In Camera "Perspective", i can see the effect of shader: In Camera ...
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1answer
37 views

FindNextValidTechnique fails

My effect file compiles successfully, but FindNextValidTechnique fails. Technique part of the shader: technique Diffuse { pass Pass0 { VertexShader = compile vs_2_0 ...
2
votes
1answer
42 views

Underwater Shader Animation Help

I found an underwater (distort) effect and I got it to work but somehow I cannot make it animate given the offset here: Fragment Shader code: uniform sampler2D fbo_texture; uniform float offset; ...
3
votes
1answer
36 views

Strange depth map projection

I'm trying to implement depth-only SSAO and for that, I render a depth map into a texture and pass it to my SSAO shader which then uses it. The problem is that when I try to output the depth map ...
1
vote
1answer
795 views

glsl shader to allow color change of skydome ogre3d

I'm still very new to all this but learning a lot. I'm putting together an application using Ogre3d as the rendering engine. So far I've got it running, with a simple scene, a day/night cycle system ...
0
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0answers
22 views

crash while debug shader [on hold]

I build a very basic directx 11 game that render simple cube with vertex and index buffer. I am run my game in graphic diagnostic and capture some frames. The problem is when I open the frame in ...
0
votes
1answer
205 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(); ...
0
votes
1answer
479 views

OpenGL Tessellation makes point

A little problem with my tessellation shader. I try to implement a simple tessellation shader but it only makes points. Here's my vertex shader : out vec4 ecPosition; out vec3 ecNormal; void ...
1
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1answer
76 views

Are shaders always faster?

Will using shaders or some other way of talking directly to the GPU always be faster than drawing to the screen in whatever language a game is being (mainly) written in? I guess that code with lots of ...
4
votes
2answers
2k views

XNA 4.0 - Normal mapping shader - strange texture artifacts

I recently started using custom shader. Shader can do diffuse and specular lighting and normal mapping. But normal mapping is causing really ugly artifacts (some sort of pixeling noise) for textures ...
0
votes
1answer
35 views

Is there anyway I can make a plane visible from both sides?

In Unity i have a model of a tree with leaves made of a plane and a texture, when I upload it to unity the texture is only visible on one side so how can I change it to be visible from both sides ...
1
vote
1answer
229 views

Mesh fading to transparent

I have a 2D Mesh object generated at runtime painted all with uniform color. I want that mesh to have its color fade to transparent color close to the edges. Despite I searched everywhere I could not ...
1
vote
1answer
518 views

GL_EXT_shadow_samplers killing my shader

I have the following fragment shader for my scene #extension GL_EXT_shadow_samplers : require ... vec4 color = texture2D(uTextureUnit0, varTexCoord0); if (colorTransformEnabled != 0) { vec3 ...
0
votes
0answers
15 views

What is dynamic branching in shader? And How to check which runs on android phone?

Is it simple "for" or "while" in loop with variable? Is it standard term? I have errors on some android devices with "for"-terms. [0020.31] Log: Compiling Shader 0x8200000000_0x3000000000000000, ...
1
vote
1answer
41 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 ...
1
vote
0answers
38 views

Set Render Target usage

I am using Unity and I have some difficulties about understanding the way Set Render Target works and how it can behave with the shaders. Is it possible to render a shader pass in multiple render ...
0
votes
2answers
93 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 ...
5
votes
1answer
71 views

How can shader code duplication be reduced in Unity?

In our current Unity project we have a few shaders that are basically just supersets of another shader. For example, we have a shader that performs lighting calculates with diffuse, normal, specular, ...
1
vote
1answer
297 views

VertexColor shader is not working correctly in built application

I want to change the vertex colors of my mesh. The light sources must not affect the objects with this shader, its lighting must be determined only by its vertices colors, so I turned the Lighting ...
0
votes
1answer
18 views

Mapping “Color” parameter from SpriteBatch.DrawString() function to a custom shader

I've recently found a nice way to render text in XNA with custom font AND custom shader. Here is the game code**: using System; using System.Collections.Generic; using System.Linq; using ...
1
vote
1answer
82 views

How to create a material that blends textures in Blender to Unity workflow

I'm new to Blender and Unity and trying to figure out the best way to create a material that will use either vertex colors or a texture map to interpolate between other textures on a single mesh. ...
0
votes
1answer
85 views

Outline of plane slice of arbitrary object

How would you extract the outline of a shape from slicing a plane through an arbitrary object? Note: This is related to my Unity Answers question, but not exactly the same.
2
votes
0answers
59 views

Volumetric grass

I've been extremely interested in volumetric technology. Especially in volumetric grass. The online resources are extremely scarce on this topic. What is the difference from creating a lot of ...
0
votes
2answers
387 views

Unity how to change material properties at runtime

I'm working on a unity game where I want to change the color of a material from within a script. The material applies to a line renderer. I currently have the following script: using UnityEngine; ...
0
votes
1answer
35 views

How to Set HLSL Shader Input Textures?

Very simple question. With C++/Direct9, I'm creating a texture as RenderTarget with a full screen quad, creating a scene, setting a HLSL pixel shader, copying the image and then call Present. 1) How ...
1
vote
1answer
108 views

Apply an special effect to an scene area

I have a 2D game where I have a second camera on my scene, that renders an upside down image of the scene, and distorts it, giving the effect of water reflection. I render this camera first, and on ...
1
vote
1answer
162 views

Problems with texture orientation in space

I am currently drawing texture in 3D space and have some problems with it's orientation. I'd like me textures always to be oriented with front face to user. My desirable result looks like ...
0
votes
1answer
389 views

When should I set a texture as a shader resource in order to read it?

I'm writing a Direct3D 11 HLSL shader with SharpDX. What I want to do is write the depth to a texture in one pass and read it in the next one. After declaring the texture, do I have to set the depth ...
0
votes
1answer
331 views

OpenGL Shader Storage Buffer Objects array length problem

Ok guys, I think I have a very strange problem. I have an old laptop, but its HD 6370M currently supports opengl 4.4, so i decided to learn how to use some new features of this platform, so after ...
0
votes
1answer
35 views

DX9 How to Apply HLSL Shader with StretchRect

Using DirectX 9,I'm trying to run a HLSL pixel shader on video frame data while copying it from one texture buffer to another texture buffer without displaying it. StretchRect at the end is what ...
4
votes
1answer
112 views

How do you add turbulence to a particle system using noise?

I have implemented a basic particle system using transform feedback in openGL, hoping to replicate a dust cloud. I have looked at methods of adding turbulence, such as vortices found here. But they ...
3
votes
0answers
71 views

Raymarching tangents

I've recently started to experiment with raymarching over on shadertoy.com. It seems common to find the normal for a distance field like so: vec3 scene_normal(vec3 p) { vec3 e = vec3(0.001, 0.0, ...
0
votes
1answer
74 views

Render Queue Sorting, HOW?

Recently I'm trying to implement a render queue sorting system, i.e., ordering my renderable objects in an array in such a way that the overhead of OpenGL state changes are minumum. After some ...
0
votes
2answers
525 views

Using Appendbuffers in unity for terrain generation

Like many others I figured I would try and make the most of the monster processing power of the GPU but I'm having trouble getting the basics in place. CPU code: using UnityEngine; using ...
0
votes
2answers
388 views

translate-scroll repeated 2d texture using opengl shader

I managed to implement an infinite 2d texture scrolling using the following shader. btw I'm using cocos2d-x 2.2.1. The vertex shader: attribute vec4 a_position; attribute vec2 a_texCoord; #ifdef ...
0
votes
1answer
26 views

Processing through multiple shaders (LWJGL/Java/OpenGL)

Very simple question: Is it possible to process a vbo through different shaders? If so, how? What I want is sth like this: reflectionShader.bind(); //starts shader reflectionShader.load(some_values); ...
1
vote
1answer
118 views

Run HLSL in C++ Basic Sample

I'm considering the idea of taking shaders written in HLSL and running them in an AviSynth plugin to process videos. This would allow accessing various shaders, and also to have GPU acceleration. I'm ...
3
votes
1answer
484 views

How to create heat haze effect in Libgdx?

I would like to create a heat haze effect for a 2D game I am making. Do You have ideas or suggestions, how to get that effect. I am using Libgdx(OpenGL 2.0). Thank You in advance!
1
vote
1answer
24 views

libGDX upload z-axis of sprite to graphics card

Background: I want to obtain each fragments position via vertex interpolation to then calculate the light vector for phong shading (L = [Fragment pos] - [light source pos]). Problem: At the moment I ...
0
votes
0answers
32 views

Unity - Meta pass and Precomputed Realtime GI

I am writing a shader in Unity and I would like to use some special values for the precomputed realtime GI. I am using a vertex fragment shader as it seems that it offers much more controls than a ...
0
votes
2answers
126 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
2answers
208 views

2D Hidden Object Silhouette Shader

Right now I am not using any depth information in my engine, but I just found out that it would be neat to be able to render the silhouette of important game objects that are "behind" something with a ...