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

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5
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213 views
+100

How can I convert this xBR shader file into something I can use in XNA? (partially working)

I'd like to render my game scaled up with one of the hqx filters (hq2x, hq3x or hq4x) or an xbr filter in a shader. I was able to find implementations of these shaders: hqx xbr (hqx derivative - ...
4
votes
0answers
69 views

Ogre PSSM Grass Receiving Shadows

So I made the switch to Ogre3D (v1.7) and using PagedGeometry. What I'm trying to do is make a simple scene with a terrain, some trees and grasses. In a nutshell, I would like to achieve this kind of ...
4
votes
0answers
470 views

How to reproduce the 3ds Max Gradient Ramp effect?

The material definition of a mesh is composed of these three components: Self-Illumunation, Refletcion and Refraction. Each of these components has a Gradient Ramp as a map and the mapping mode is set ...
2
votes
0answers
70 views

Transparent diffuse fails to render from all viewing angles

I'm rendering this chunk as a Unity mesh and I have just one material (with alpha) which is applied over all the mesh. Everything in the chunk is automatically generated at runtime, so it's not ...
2
votes
0answers
264 views

Ashikhmin-Shirley model implementation: ugly result

I am trying to implement the Ashikhmin-Shirley model using these formulas: This is the GLSL 1.2 fragment shader code: uniform vec4 materialAmbient, materialDiffuse, materialSpecular; uniform ...
2
votes
0answers
78 views

Framebuffer Heightmap Performance Problems

I am using a framebuffer to procedurally create heightmaps with perlin noise in GLSL shaders. There are two main problems that I am experiencing with this. I have a quadtree for the terrain and in the ...
2
votes
0answers
264 views

Monogame working with Krypton

I am trying to make a simple 2D game engine using Monogame and the Krypton 2.0 lighting engine. So far I have succeeded in rendering a light but I am unable to generate any shadows from any hull's. ...
2
votes
0answers
79 views

Transparency behaviour on PowerVR

I'm doing some graphics optimizing tests, especially on PowerVR transparency. Now I made a scene where there are two groups of simple objects. One group has the shape in geometry using diffuse shader ...
2
votes
0answers
284 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!
2
votes
0answers
326 views

XNA 4.0 Pixel Shader 3.0 Exact Texture Lookup/Sample Issue

I am stuck on trying to solve this problem. I originally had some shaders written that worked for XNA 3.1, but after converting to XNA 4.0 they would no longer compile due to instruction counts, flow ...
2
votes
0answers
91 views

OpenGL ES Single Bitplane Texture (or something close)

I'm looking to use a texture to store single bits (or a low number of bits, two or three). This in of itself isn't hard if you're using nearest neighbor sampling with some bit plane unpacking. The ...
2
votes
0answers
234 views

iPhone GLSL shader dynamic branching issue

I am trying to pass an array of vec3 as uniform and then iterate through them on each pixel. The size of array varies on situations so I can't make the loop with constant number of iterations. ...
2
votes
0answers
975 views

2D water shader in SFML

I want to implement the algorithm for a 2D water surface described here and here. Before somebody finds out, beats me up and deletes this, I'm gonna say it myself. I posted this question over at ...
2
votes
0answers
1k views

VS2012 C++: Unable to ID3D11Device::CreateVertexShader when loading compiled CSO file

I have been trying to get a tutorial Direct X 11 application running for some time now. I'm being stymied when I try to create the vertex shader. Setting the Direct X Debug setting reveals that I am ...
2
votes
0answers
275 views

Kinect User Silhouette Shader

I have this usermap from kinect's depth data (size is 320x280) and i want to display it on my game. The problem, of course it's ugly (first image) and i want to have beautiful effect like in the ...
2
votes
0answers
342 views

Normal maps in 3dsMax - OgreMax - how to view associated tangent vectors?

Reading this post I found out that 3dsMax might not use the same tangents when rendering normal mapped objects. In my case, I was using Ogre and OgreMax to analyze results and they were very ...
1
vote
0answers
33 views

Understanding diffuse lighting in The Division

Here is a screenshot of the main character walking under a bright lamp: His hat, that was originaly dark grey, turns completely white. My question is how can such lightsource do this without making ...
1
vote
0answers
69 views

How to read neighbor pixels in GLSL?

I'm using SFML 2.1, it's much more straightforward for me so I can jump directly to learning the shading language. I'm trying to do something similar to conway's game of life. I already learned that ...
1
vote
0answers
102 views

OpenGL Bump Map — Texture artifacts ?

I am learning OpenGL (and learning the math behind it) and I'm making a simple OBJ viewer, nothing fancy. I have diffuse, specular and ambient light/texture working fine and now I am implementing the ...
1
vote
0answers
81 views

Unity Free Inverse Depth Mask?

How would it be possible to create an inverse depth mask? In this case, I refer to a depth mask as a shader attached to a mesh that 'pokes a hole' through the current camera layer to let you see the ...
1
vote
0answers
170 views

How to implement efficient Fog of War?

I've asked a question how to implement Fog Of War(FOW) with shaders. Well I've got this working. I use the vertex color to identify the alpha of a single vertex. I guess the most of you know what the ...
1
vote
0answers
56 views

Multi Pass Blend

I am seeking the simplest working example of a two pass HLSL pixel shader. It can do anything really, but the main idea is to perform "ping ponging" to take the output of the first pass and then send ...
1
vote
0answers
53 views

Compute min/max position of tile in compute shader

I'm trying to implement tiled deferred lighting with OpenGL compute shaders. For that, I need to compute the minimum and maximum position of each tile. My first approach was to use atomicCounters ...
1
vote
0answers
82 views

SpotLight in ForwardBase pass using forward rendering

Is there anyway I can force Unity to allow me using a custom shader to render spotlights in a ForwardBase pass (using Forward Rendering Path)? For what I could see since now: Unity use and ...
1
vote
0answers
287 views

How can I combine my scrolling effect with the vertex lit shader?

I want my shader to work in both Forward and VertexLit rendering modes. I'd written a texture scrolling shader, but I also want to consider lighting which is produced by Vertex lit shader. I can't add ...
1
vote
0answers
156 views

How to fix problem in serpentine case using Blinn/Loop algorithm

I'm trying to implement Blinn/Loop algorithm to render cubic bezier on shader. I calculate the curve type using code below (v0, v1, v2, v3 are cubic bezier segment): CurveType ...
1
vote
0answers
97 views

Can't understand the Schlick model formula

I'm trying to implement the Schlick shading model in the fragment shader. I took the formulas from Karsten Schwenk's "a survey of shading models for real-time rendering": First of all I don't ...
1
vote
0answers
50 views

Approximating Subdivision Surfaces with Gregory Patches for Hardware Tessellation

I'm trying to implement the approach (http://research.microsoft.com/en-us/um/people/cloop/sga09.pdf). Unfortunately I'm not quite clear regarding the formulas in chapter 3, I am hoping to get some ...
1
vote
0answers
215 views

GLSL, Internal error: assembly compile error for fragment shader at offset 513

My vertex and fragment shaders link correctly. When I try and link my shader program I get the error: "Internal error: assembly compile error for fragment shader at offset 513". Pastebin of fragment ...
1
vote
0answers
173 views

Cylinder scrolling / wrap-around world using shaders?

I am making a 2D game using OpenGL ES 2.0 (libgdx), where the world will wrap-around itself on Y-axis. Apart from implementing the "modulo" method in my rendering code, I'm wondering whether it's ...
1
vote
0answers
88 views

How do I align textures properly with an exploding sprite / breakable body?

I'm working on a game based on Box2D and Starling which includes breakable bodies - bodies/objects that when hit with sufficient force break apart (into smaller pieces). I've managed the physics part ...
1
vote
0answers
144 views

Matrix array doesn't seem to get populated

I'm trying to stream an array of matrices to a vertex shader, but it seems that only the first matrix works. What could be the problem? I suspect that I upload the matrices in a wrong way. C# ...
1
vote
0answers
647 views

TEXCOORD0 vs COLOR in a Cg shader

I started to learn Cg shader programming, following the Panda3d shader tutorials. Having a scene with only a cube shown, each vertex of the model with a different color, I can successfully use the ...
1
vote
0answers
2k views

Multiple Render Targets, Multiple Fragment Shaders

I render a normal and a depth image of a scene. Then I want to reuse these two images to do further texture/image processing in a second fragment shader. I use a framebuffer with 3 textures attached ...
1
vote
0answers
211 views

Vertex shader to Pixel shader NVIDIA problem - restarting drivers

I have problem with my shader on NVIDIA cards. On AMD it's working right. Shader Builder exported CODE: //ROOT //PSParts //VSParts //Samplers sampler sLod23ColorGround : register(s0); sampler ...
1
vote
0answers
179 views

loading a heightmap as texture in shader

I have a height map of 256x256, containing, foreach cell, not only height as a normal float value ( not 0-1 ) and also 2 gradient values ( for X and Y ), also as normal float values ( not 0-1 ). I ...
1
vote
0answers
566 views

Need help transforming DirectX 9 skybox hlsl shader to DirectX 11

I am in the middle of implementing a skybox to my game. I have been following this tutorial http://rbwhitaker.wikidot.com/skyboxes-2. I am using MonoGame as a framework and in order to support both ...
1
vote
0answers
237 views

Outline Shader Effect for Orthogonal Geometry in XNA

I just recently started learning the art of shading, but I can't give an outline width to 2D, concave geometry when restrained to a single vertex/pixel shader technique (thanks to XNA). the shape I ...
1
vote
0answers
263 views

Full screen shader causes performance hit

I basically want to have a shader run that can do something like toon shading, or grayscale the whole screen, or radial lighting. To do this, I create a new bitmap each time the display resizes that ...
1
vote
0answers
430 views

Unity surf shader not rendering

I have created a default surface shader in unity and added a texture but it is not rendering. If i switch to a diffuse shader i see the texture but my shader is just black. Shader "TestShader" { ...
1
vote
0answers
283 views

Why does drawing bounding boxes disable my other shaders?

I have some .X models loaded via self-written AssetManager that has Lists with models in it. I also apply a diffuse shader to my models. All the models are "self-drawing" in a BasicModel class. ...
0
votes
0answers
2 views

Grayscale and 2D lighting using cocos-2dx

I want to create a lighting effect on a gray-scaled world using cocos2d-x. What I've done is creating a layer which runs a shader program that receives light positions and radiuses as input and ...
0
votes
0answers
29 views

Very subtle HLSL syntax change causes compliation error

The following HLSL works and compiles: texture2D renderTarget; float h; // declared here sampler GetRenderTarget = sampler_state { texture = <renderTarget>; }; float3 GetHsvFromRgb(float3 ...
0
votes
0answers
20 views

Sprite framework binding multiple textures

In an attempt to batch render as many quads (sprites) as possible, I'm instance rendering a single unit-sized quad and passing in a buffer of per-instance data that includes width/height, texture ...
0
votes
0answers
39 views

OpenGL ES 2.0 - Applying rotation to only specific quads within a batch

This problem seems fairly simple on the face of it: How, when drawing a batch of quads using a triangle strip, can I apply a rotation to only one or some of the quads. I've been looking at this ...
0
votes
0answers
47 views

Shadow mapping comparing depth in GLSL

I've been trying to figure out how to compare against my shadow map, which has a shader that just does the following: gl_FragColor.r = gl_FragCoord.z; And my vertex shader for the render pass does ...
0
votes
0answers
35 views

Having trouble getting shader to work with sprite batch in XNA #4

I found a neat "CRT screen" effect shader on the web, but I've never used shaders before and I can't seem to get it working properly. If I do the second sprite batch in my code here normally without ...
0
votes
0answers
24 views

How to upload lights when doing one pass per light

Suppose I have a reasonable amount of light sources that I upload at once in my forward rendering and accumulate them in shader. Now that I am willing to move to deferred, and so one pass per light, ...
0
votes
0answers
69 views

Shader - Objects Depth or Thickness

I am using Unity and would like to render the thickness of an object.My first thought was to use the ZBuffer and the depth but it is always depend to the camera, it seems legit.But I would like to ...
0
votes
0answers
30 views

HLSL Shader Relative Positioning

I've got a shader that does the texturing, lighting, etc. for my game engine (written on top of MonoGame, in case that's relevant) for my block-terrain-based game (everything is rendered as triangles ...