textures

I'm working on a shadow mapping algorithm, and I'd like to debug the depth map that it's generating on its first pass. However, depth textures don't seem to render properly to the viewport. Is there any easy way to display a depth texture as a greyscale image, preferably without using a shader? You may need to change the depth texture parameters to display it as greyscale levels : glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_COMPARE_MODE, GL_NONE ) glTexParameteri( GL_TEXTURE_2D, GL_DEPTH_TEXTURE_MODE, GL_LUMINANCE ) You can then normally use the texture as a 'normal' greyscale 2d texture,

I have been trying to get some script that just displays a texture on a square using texcoords. If possible can you edit the script so that it works as from there I can workout how you did it as thats how I learn. import Control.Monad (unless, when) import Graphics.Rendering.OpenGL import qualified Graphics.UI.GLFW as G import System.Exit import System.IO import Texture import Data.IORef import Graphics.GLUtil import qualified Data.Set as Set main :: IO () main = do let errorCallback err description = hPutStrLn stderr description G.setErrorCallback (Just errorCallback) successfulInit <- G.init

Please, I need tutorials/code examples of how to fill each side of a cube with different textures on OpenGL ES 1.1 I found a lot of tutorials but none of them explain clearly how to put different textures in each face and none of them gives easy code examples of how to do it. My actual code (from nehe examples) that draws a cube with the same texture on each face: public class Cube { /** The buffer holding the vertices */ private FloatBuffer vertexBuffer; /** The buffer holding the texture coordinates */ private FloatBuffer textureBuffer; /** The buffer holding the indices */ private

I am trying to scale an SKSpriteNode object without smoothing/anti-aliasing (I'm using pixel-art so it looks better pixelated). Is there a property I need to set to do this? This is the code I am using to render the sprite: SKTextureAtlas *atlas = [SKTextureAtlas atlasNamed:@"objects"]; SKTexture *f1 = [atlas textureNamed:@"hero_1.png"]; SKSpriteNode *hero = [SKSpriteNode spriteNodeWithTexture:f1]; [self addChild: hero]; hero.scale = 6.0f; The image is scaled correctly but blurry/smoothed out. This is hero_1.png . Try, SKTexture *texture = [SKTexture textureWithImageNamed:@"Fak4o"]; texture

I'm trying to understand Textures, Texture Units and Samplers in OpenGL 4.5. I'm attaching a picture of what I'm trying to figure out. I think in my example everything is correct, but I am not so sure about the 1D Sampler on the right side with the question mark. So, I know OpenGL offers a number of texture units/binding points where textures and samplers can be bound so they work together. Each of these binding points can support one of each texture targets (in my case, I'm binding targets GL_TEXTURE_2D and GL_TEXTURE_1D to binding point 0 , and another GL_TEXTURE_2D to binding point 1 ).

I have a linear array of unsigned chars representing a 2D array. I would like to place it into a CUDA 2D texture and perform (floating point) linear interpolation on it, i.e., have the texture call fetch the 4 nearest unsigned char neighbors, internally convert them to float, interpolate between them, and return the resulting floating point value. I am having some difficulty setting up the texture and binding it to a texture reference. I have been through the CUDA reference manual & appendices, but I'm just not having any luck. Below is runnable code to set up and bind 1) a floating point