textures

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glgConvertTo_32 on the iPhone

I ran my app through Instruments today and noticed that an excessively high amount of time was being spent in the \"glgConvertTo_32\" function. I read elsewhere that this is because Apple uses \"GL_BG[详细]

2023-03-30 07:34 分类：问答
Should OpenGL textures be dynamically loaded and unloaded

I am implementing a game engine using OpenGL and wonder if it\'s a good idea to manually unload textures that are not used within a certain radius of the camera. It has been suggested to me for Androi[详细]

2023-03-30 06:56 分类：问答
Wrong texture values in glCopyTexImage2D()

I got wrong texture values from glCopyTexImage2D(). I attached depth texture to FBO, and got its value in rendering pass. I expected a result like below : (x : background, y : correct pixel)[详细]

2023-03-30 00:08 分类：问答
Direct3d drawing 2d sprites. scaling issues

I\'m new to programming with c++ and direct3d. I try to draw textures(LPDIRECT3DTEXTURE9) on the screen with a sprite(LPD3DXSPRITE). But when I draw a texture it seems to enlarge it, a 100x100 px text[详细]

2023-03-29 20:33 分类：问答
Texture Atlas in OpenGL ES 2.0

I am working on a simple project with OpenGL ES 2.0.It\'s gone fairly well, but I seem to have hit a spot that is seemingly poorly documented for us beginners.That being, I am trying to utilize a text[详细]

2023-03-29 18:10 分类：问答
Need support in LWJGL - Setting the type of texture

Can somebody help me setting different texture types? (GL_LINEAR, GL_NEAREST, etc) I\'m usingthe slick-util lybrary with netbeans. The problem is that i can\'t set to different types.[详细]

2023-03-29 12:17 分类：问答
Opengl es 1.1, texture compression ETC1 and Mipmaping (complete set of mipmaps error)

When I activate the mipmaping on uncompressed texture, all is working perfectly. When I do it on ETC1 texture, the texture is blank, certainly because le complete set of mipmaps was not given.[详细]

2023-03-29 03:44 分类：问答
Applying texture without coordinates

开发者_开发技巧Is there any way to apply the texture to an object without specifying texture coordinates?In fixed-function OpenGL, you can generate texture coordinates by activating texture coordinate[详细]

2023-03-28 21:08 分类：问答
what is the optimal texture size in this case?

what is the optim开发者_StackOverflow社区al texture size in this case for pixel perfect fit on screen and for performance?[详细]

2023-03-28 15:34 分类：问答
Issue with texture loading using the DevIl library

I am working with the DevIl library and trying to use it to load a texture to OpenGL to apply to a sprite. The code is directly out of the C# Game Programming for Serious Game Design book (if that hel[详细]

2023-03-27 21:32 分类：问答