texture compression

When are we supposed to use textures? First of all, this is a very subjective question, the first should be determined by personal judgment: such as large area of color, background, need to be consistent lines and so on, for me, because of computer memory and time reasons, one of the clones is not a good way Second, when we sometimes need to imitate an effect, we may not be able to determine whether the original image is using a texture fill, then I t

This article mainly introduces the mainstream mobile device GPU, and the supported compression formats1.GPU classification1.1 Imagination Technologies PowerVR SGX seriesrepresentative Model: PowerVR SGX 535, PowerVR SGX 540, PowerVR SGX 543MP, PowerVR SGX 554MP, etc.Products: Apple iphone full line, ipad full line, Samsung I9000, P3100, etc.1.2 Qualcomm (Qualcomm) Adreno seriesRepresentative Model: Adreno 200, Adreno 205, Adreno 220, Adreno 320, etc.R

Reference Blog: 51533953 17797641 Fourier transform is a powerful tool in signal processing, which can help us convert images from airspace to frequency domain, and extract the features that are not easily extracted in airspace. But after the Fourier transform, The frequency characteristics of images in different locations are often mixed together, but Gabor filter can extract spatial local frequency characteristics and is an effective

1, create a new file, set the foreground color is dark brown RGB 73, 22, 4, press Alt Delete key to fill the background layer.2, the implementation of the menu bar "filter" → "texture" → "particle" command, in the pop-up Particle dialog box, set the strength of 100, contrast 24, particle type selection vertical.3, the Execution menu bar "filter" → "Twist" → "rotation distortion" command, in the pop-up Rotation Distortion dialog box, set angle of 50.4,

The spotlight texture is the aperture of the spotlight that shines on the surface. Prepare a spot texture brightness map, use the projection texture method described in "glsl projective texture" to project the spot texture to the spotlight. Unsigned char * pixels = (uns

After watching 3D for a few days, I can understand some pictures. Now I am very annoyed with this texture, but I am not familiar with it. This example is downloaded from the website. It feels good. Let's take a look at it first, I will discuss with you later. Package WYF. SJ; import android. app. activity; import android. OS. bundle; import android. widget. compoundbutton; import android. widget. linearlayout; import android. widget. togglebutton;

One, what is GLCM. GLCM is the abbreviation of the grey level co-occurence matrix, also known as the grey Tone Spatial Dependency matrix, the Chinese name is the gray-scale co-present matrix. Defines the GLCM is a tabulation of how often different combinations of pixel brightness-valus (gray level) occur in a image. GLCM is used to describe the frequency of different combinations of gray values in an image. The following test image to use below, this is a grayscale map (GLs), this diagram will a

Android texture fixed distance movement, android texture fixed Distance : Move up and down the text bar on the right. If no text is displayed, it will automatically stop moving. This is different from the texture movement I wrote earlier. The previous movement is loop movement, and this time it is positioning and moving. Vertex shader: uniform mat4 uMVPMatrix;a

Final effect 1, a new size of 800 * 800 pixel document, into the channel panel, a new channel named "Sideline." 2. Set the foreground color to white, perform: filter > Texture > Stained glass, parameters and effect as shown below. 3, the channel to duplicate a layer, named "Grayscale gradient", the copy of the channel to perform: Filter > Art effect > Neon light, parameters and effects as

A three-dimensional text rotation animation with a pure CSS3 embossed texture and css3 embossed texture Rotation I still remember sharing a special CSS 3 text 3D flip effect, which gave the text a three-dimensional visual effect. The CSS3 text animation effect that you want to share today is even cooler. It not only has a three-dimensional 3D effect, but also shows a visual effect of relief

raw data of the texture is the 0th level of the mipmap, and the mipmap size of each downward level is half the previous level. These basic concepts will appear in some graphic books, not here.Some texture resources, in addition to Mipmap, are also a texture array (texutre array). Cube Map is a very special texture arr

Original post address: http://ogldev.atspace.co.uk/www/tutorial16/tutorial16.html Texture ing maps an image (or texture) to one or more faces of a 3D model. Textures can be any image, and texture ing can increase the realism of 3D objects. Common textures include bricks, plant leaves, and so on. In comparison, texture

It can be simply understood as: There are n texture units in the graphics card (the number depends on your graphics card capabilities), each texture unit (GL_TEXTURE0, GL_TEXTURE1, etc.) have gl_texture_1d, gl_texture_2d, and so on, the following code: struct Textureunit { gluint targettexture1d; Gluint targettexture2d; Gluint Targettexture3d; Gluint Targettexturecube; ... }; Textureu

This article mainly reads Dr. Zhang Yan's doctoral thesis "Research and Application of texture synthesis technology" and the author's original article "image quilting for texture synthesis and transfer". First, the effect: change the image size of 701*501 pixels. In the experiment, it will be 400*400, and then 4*4. The effect is as shown in the following figure.This method is very simple, mainly in two part

) {return (V-0.5) * 2 ;}Then use this normal. The method is the same as that in section 16.For detailed implementation, see the script at the end of this article.Iv. normal texture formatNormal maps are divided into two main categories: (1) RGB normal maps, which are used above. It is usually blue. (Suffix can be the latest .png. Jpg, etc)(2) Compressed normal texture. For example, dxt5.0 (Suffix:. DDS) DDS

The process of creating a sailor's texture is simple, and it is also a technique that can be applied to most skin types, even to creatures with different skin tones. The following is a model with no polygon coloring, the upper-left corner is the version you just started to draw, and the brushes, strokes, and channels (alpha) are used in the subsequent steps. First draw the entire model with a very passionate red color, and then define so

Cryengine3 texture creation Guide Cryengine textures are generally created using the crytif plug-in Adobe Photoshop and saved as the tif file format. However, Tif images cannot be directly applied to games, but are converted into a more optimized format (usually DDS) using resource compiler ). Not all textures use the same settings. For example, normalmap requires a different compression format than diffuse

corner of the rendering batch statistics, huh, it seems to learn from the Ogre statistical method, why do we need to statistical rendering batch? It is to let us have an observed indicator during optimization. : (5) Use a compressed texture The iOS device uses the powervr display chip, which can directly read the PVR format. The source code of the PVR format texture has been analyzed in the previ

"Good memory is inferior to bad writing" commonly used picture file format and texture Format 1, commonly used picture file format:BMP (Window under Universal format Bitmap in addition to depth optional, no compression)GIF (a lossless compression scheme for continuous tones based on the LZW algorithm at 50%)JPEG (very popular image format, lossy

Final effect 1, new 800*550 size of the document, double-click the background layer to unlock the background layer to set the layer style as follows. 2, with the Sf-sports font hit "52PSXT", fill 0%, set the layer style as follows.