A bitmap (raster image) used in a texture mapping process.

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OpenGL : sluggish performance in extracting texture from GPU

I'm currently working on an algorithm which creates a texture within a render buffer. The operations are pretty complex, but for the GPU this is a simple task, done very quickly. The problem is that, ...
3
votes
4answers
1k views

How can I view an R32G32B32 texture?

I have a texture with R32G32B32 floats. I create this texture in-program on D3D11, using DXGI_FORMAT_R32G32B32_FLOAT. Now I need to see the texture data for debug purposes, but it will not save to ...
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votes
1answer
4k views

Why can't I add a float4 read from a Texture2D.Sample in the Vertex Shader?

These lines work (compile fine): float4 offset = HeightMap.Sample(HeightSampler, input.Texcoord); input.Position.xyzw += float4(0, 1, 0, 0); These do not (any use of offset together with input/...
3
votes
2answers
254 views

Is it ok to use NPOT textures with OpenGL in this situation?

I drew some icons to use on orthographic projection and instead of loading each icon file individually as a texture I thought of putting them all together in one single file. Now I have a file 72x36 ...
3
votes
3answers
156 views

What kind of skills are required to work in a content pipeline department in a high level role

I'm looking more for high level role such as producer/manager of the group making the tools for a content pipeline. This would be for a large AAA studio. Also what kinds of tools are they creating?
3
votes
1answer
627 views

Multiple texture coordinates per mesh?

So far I've used the same texture coordinate for both the normal and diffuse textures on a mesh, yet when reading the Assimp documentation (http://assimp.sourceforge.net/lib_html/structai_mesh.html#...
3
votes
1answer
120 views

Texturing a quad

Drawing a quad with a texture mapped to it with the fixed OpenGL pipeline is one of the easiest things to do in OpenGL. And for some madmaking, mysterious, dumb reason I can't get it to work. I ...
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1answer
1k views

Multiple Textures in Shader?

I have this (pseudo) code: unsigned int TextureLoc = glGetUniformLocation(programID, "objectTexture"); for(int i = 0; i < object->texturesCount; i++) { glActivateTexture(GL_TEXTURE0); ...
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votes
2answers
647 views

Compressing textures and recompressing textures

Which tools are considered best-quality for compressing textures for use in OpenGL? Which can be used from the Linux commandline? And which lossless compressors give good ratio/speed on compressed ...
3
votes
2answers
600 views

What is UVIndex and how do I use it on OpenGL?

I am a noob in OpenGL ES 2.0 (for WebGL) and I'm trying to draw a simple model I've made with a 3D tool and exported to .fbx format. I've been able to draw some models that only have: A vertex buffer, ...
3
votes
1answer
2k views

Reusing a render target to create multiple Texture2D's (XNA)

i want to be able to loop through a hole bunch of textures, and render them on an object. I then want the rendered image to be placed onto a texture2D. The point? well hopefully i will end up with an ...
3
votes
1answer
3k views

How to create mipmap for Unity3d textures loaded with www?

When I load a texture using the code below: WWW www = new WWW(textureName); yield return www; renderer.material = new Material(Shader.Find("Diffuse")); Texture tex = www.texture; tex....
3
votes
1answer
2k views

Why does OpenGL seem to ignore my glBindTexture call?

I'm having problems making a simple sprite rendering. I load 2 different textures. Then, I bind these textures and draw 2 squares, one with each texture. But only the texture of the first rendered ...
3
votes
2answers
487 views

Having the same texture data in different ID3D11Texture2D

Sorry if this has been answered elsewhere - I'm rather new to DX. My question concerns conservation of resources - specifically textures in VRAM. I assume that upon returning from a call to ...
3
votes
2answers
900 views

Textures on top of other textures when using VBOs

I'm currently making a cube style game. With chunks being drawn with VBOs. I'd like to know if there is a way to create an overlay texture on top of the existing texture without the need to rebuild ...
3
votes
1answer
2k views

AndEngine Moving a Connected Texture and Physics Body

In AndEngine, many times we create a TextureRegion for our sprite. We can move this region around the scene but when I connect that region to a physics body I end up being able to use either one to ...
3
votes
3answers
537 views

How can I render something like the swirling clouds of Jupiter?

The effect should be as similar as possible to this, though it does not need to be at planetary scale. I was thinking that it could be done offline via particles, perhaps by directing their motion ...
3
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1answer
530 views

Creating specular maps for textures

How does one usually go about this? Is this something that generally an artist has to do manually, or are there decent procedural methods (such as with normal mapping where one can look for gradients ...
3
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2answers
965 views

How do I tile a specific region of a sprite?

I have a sprite that I use as a sprite sheet, where regions of the image represent various UI elements (window corner, border, background, etc.). I want to use a certain region of that sprite as a ...
3
votes
1answer
818 views

Why do Pool.Default D3D volume textures take memory from my process?

I am working on a Direct3D rendering application that uses a lot of texture RAM. I notice that if I allocate a Pool.Default volume texture: _texture = new VolumeTexture(device, size.Width, size....
3
votes
1answer
755 views

iPhone/OpenGL-ES partially texture mapping an object

I only have a basic understanding of OpenGL, so I'm probably showing my ignorance here. I'm looking for a great iPhone/OpenGL-ES example of applying a texture (preferably from a texture atlas, but ...
3
votes
1answer
815 views

Can Unity support / use textures that are not square?

I have been told by another highly skilled Unity artist that Unity cannot efficiently handle non square images. Since that doesn't sound right to me, I wanted to get a second or third confirmation to ...
3
votes
1answer
345 views

What is the performance impact of rendering a larger quad?

Lets say I have two planes and I textured them in blender with a 512*512 tiled texture. One plane is bigger than the other (for example, one plane tiles the texture 60 times but another only six times)...
3
votes
1answer
537 views

Texture filtering: Is the minification or the magnification filter used when rendering at the exact texture size?

Suppose you have a texture where the minification filter is linear, but the magnification filter is nearest-neighbor (point filtering). If the texture is rendered at exactly 1:1 pixels, but at a non-...
3
votes
1answer
174 views

Desaturate texture using mask in OpenGL 2

I have a very large texture i am using as background and i want to apply a filter to a small part of it, the "small part" is defined by the alpha layer of another texture i have (which is still ...
3
votes
1answer
333 views

Applying a noise texture to distort edges

I asked this question over on StackOverflow but then found this site, and it's probably better suited to here. I'm trying to implement Sketchy Drawings. I'm at the part of the process which calls ...
3
votes
2answers
224 views

Optimal way to store coordinates of a random point in 3D space in a texture?

A quick question: there is a well-known approach to store 3d point in space in a texture as a distance between camera and an object (deferred rendering). But it implies that the object lies on a ray, ...
3
votes
2answers
3k views

How do I use TextureRegion?

I can't understand how to use texture region. I have a png file which has images (sprite sheet) and I must "extract" every image I want. From here it just says TextureRegion(texture, 20, 20, 50, 50);...
3
votes
1answer
307 views

Texture prefetching in GLSL

I have a fragment shader which needs lots of semi-random access to 32x32 texture patch. Fortunately, the patch is constant for each poly, so there should be no issue storing the whole thing to the ...
3
votes
2answers
157 views

Is it possible to index different vertex attributes with different index buffers?

Let's say I've got a vertex which is part of many triangles. I can just reference those with an index buffer. But is it possible to share it's position but have different texture coords for each ...
3
votes
1answer
1k views

Silly question about perspective correct texture mapping

OK, I'll admit, the math on a perspective projection matrix is quite hairy for me, but I get the general gist of it: morph the object so that it looks... perspective-ish. But there is one thing which ...
3
votes
1answer
239 views

Why did an Android update disable the textures in my game?

I recently updated my tablet to Android 4.0.3 and now the textures for my game do not show up. I'm using OpenGL-ES 2.0 for my engine. It worked fine when I was running android 3.0. Is there any ...
3
votes
1answer
1k views

XNA: Retrieve texture file name during runtime

I'm trying to retrieve the names of the texture files (or their locations) on a mesh. I realize that the texture file name information is not preserved when the model is loaded. I've been doing ...
3
votes
1answer
3k views

Loading textures in OpenGL makes everything look darker

I don't know what I'm doing wrong but I'm having a big a problem with GL_TEXTURE_MIN_FILTER when loading textures for my scene. I'm doing a skybox, but that's irrelevant because the problem exists ...
3
votes
1answer
59 views

OpenGL cube map is always black

When creating and rendering a skybox with a cube map texture, the skybox is black. Here is how I create the cube map texture: GLuint loadCubemap(std::vector<std::string> faces) { GLuint ...
3
votes
1answer
66 views

Maya/Unity - See through models

I've recently modeled my character inside Maya; here's an image. The first thing I noticed whilst creating my model is that the models could be seen through source 1, after doing a little research ...
3
votes
1answer
76 views

How can I create random noise that is seamless across modular game assets?

Does anyone know how I can create a texture for a modular tile, such that when the tiles are arranged, random weathering effects such as scratches will be continuous across seams? An example photo ...
3
votes
1answer
109 views

Custom Coloring of Tileset Characters

Games like Dwarft Fortress and Dungeon Crawl Stone Soup are drawing their boards using tiles from a tileset image (I think?). I know you can do color keying and replace the background color with ...
3
votes
1answer
712 views

Total Texture memory size iOS / OpenGL ES

My team is running into an issue where the amount of texture memory allocated via the glTexImage2D is high enough that it crashes the app ( at about 400 MB for iPhone 5). We're taking steps to ...
3
votes
1answer
145 views

How can I animate characters' static-geometry eyes?

Here's a Nintendo example: Specifically, the animation of the pupils seems not to animate the geometry. How is this done?
3
votes
1answer
857 views

How can I use a Texture2D larger than 2048 x 2048?

I'm having issues working with a large image. I've read other threads on using images larger than a Texture2D supports, but found nothing that addresses my problem specifically with implementation ...
3
votes
1answer
355 views

How are Volumetric Effects made within games? (e.g. Smoke/Fire)

For computer generated volumetric elements such as clouds, fire, and whitewater. How are they made? Is it just a simple collection of particles [put to pixels] taken from Physics equations or are the ...
3
votes
1answer
454 views

Texture mapping a complex object on openGL ES

I dont have much experience with openGL ES (or openGL), but i do get the general idea of texture mapping, which is each vertex should be mapped for the relevant UV coordinates of the texture we choose ...
3
votes
1answer
835 views

Painting terrain with a selection circle

I don't mean putting a circle under a unit like done in an RTS, that's fairly simply done with a scenegraph(-like structure). What I'm referring to is selection circles for things like Area of Effects ...
3
votes
1answer
1k views

Skysphere to Skybox Texture Conversion

I am working on a hobby project and implemented a skybox, no big deal. Now I bought (licensed) a few really nice sky textures. Unfortunately the textures are projected for a skysphere. I could ...
3
votes
2answers
10k views

Unity Android: Truecolor texture performance hit and alternatives for truecolor

After integrating the graphics assets to my application, I noticed that when the textures are compressed they look very bad compared to truecolor. This happens to all the textures and it did not seem ...
3
votes
2answers
1k views

Need to produce an animated texture of Water where each image tiles in all directions

I need to produce a 2D 'animated' texture of "water" for a game in which each image tiles in 'all' directions, much like those produced by the Caustics Generator, but with the power and flexibility of ...
3
votes
1answer
433 views

Fourth texture = segmentation fault

I keep on getting segmentation fault each time I load fourth texture - what type of texture, I mean filename, does not matter. I checked value of GL_TEXTURES_STACK_SIZE which turned out to be 10 so ...
3
votes
1answer
1k views

How to load data for specific level at runtime?

I'm trying to create a game with many levels loaded from XML files. In my game I have many objects in each level. At present my game contains 20 levels, and I load all the textures at once on startup....
3
votes
2answers
2k views

How to mix textures in DirectX?

I am new to DirectX development and I am wondering if I am taking the wrong route to achieve the following: I would like to mix three textures which contain transparent areas and some solid areas (...