GLCOPYTEXIMAGE2D - Online Linux Manual PageSection : 3G
NAME"glCopyTexImage2D − copy pixels into a 2D texture image
C SPECIFICATIONvoid glCopyTexImage2D( GLenum target, GLint level, GLenum internalformat, GLint x, GLint y, GLsizei width, GLsizei height, GLint border )
PARAMETERStarget  Specifies the target texture. Must be ­GL_TEXTURE_2D. level  Specifies the level-of-detail number. Level 0 is the base image level. Level n is the nth mipmap reduction image. internalformat  Specifies the internal of the texture. Must be one of the following symbolic constants: ­GL_ALPHA, ­GL_ALPHA4, ­GL_ALPHA8, ­GL_ALPHA12, ­GL_ALPHA16, ­GL_LUMINANCE, ­GL_LUMINANCE4, ­GL_LUMINANCE8, ­GL_LUMINANCE12, ­GL_LUMINANCE16, ­GL_LUMINANCE_ALPHA, ­GL_LUMINANCE4_ALPHA4, ­GL_LUMINANCE6_ALPHA2, ­GL_LUMINANCE8_ALPHA8, ­GL_LUMINANCE12_ALPHA4, ­GL_LUMINANCE12_ALPHA12, ­GL_LUMINANCE16_ALPHA16, ­GL_INTENSITY, ­GL_INTENSITY4, ­GL_INTENSITY8, ­GL_INTENSITY12, ­GL_INTENSITY16, ­GL_RGB, ­GL_R3_G3_B2, ­GL_RGB4, ­GL_RGB5, ­GL_RGB8, ­GL_RGB10, ­GL_RGB12, ­GL_RGB16, ­GL_RGBA, ­GL_RGBA2, ­GL_RGBA4, ­GL_RGB5_A1, ­GL_RGBA8, ­GL_RGB10_A2, ­GL_RGBA12, or ­GL_RGBA16. x, y  Specify the window coordinates of the lower left corner of the rectangular region of pixels to be copied. width  Specifies the width of the texture image. Must be 0 or 2n~+~2*border for some integer n. height  Specifies the height of the texture image. Must be 0 or 2m~+~2*border for some integer m. border  Specifies the width of the border. Must be either 0 or 1.
DESCRIPTION­glCopyTexImage2D defines a two-dimensional texture image with pixels from the current ­GL_READ_BUFFER. The screen-aligned pixel rectangle with lower left corner at (x, y) and with a width of width~+~2~*~border and a height of height~+~2~*~border defines the texture array at the mipmap level specified by level. internalformat specifies the internal of the texture array. The pixels in the rectangle are processed exactly as if ­glCopyPixels had been called, but the process stops just before final conversion. At this point all pixel component values are clamped to the range [0,1] and then converted to the texture's internal for storage in the texel array. Pixel ordering is such that lower x and y screen coordinates correspond to lower s and t texture coordinates. If any of the pixels within the specified rectangle of the current ­GL_READ_BUFFER are outside the window associated with the current rendering context, then the values obtained for those pixels are undefined.
NOTES­glCopyTexImage2D is available only if the GL version is 1.1 or greater. Texturing has no effect in color index mode. 1, 2, 3, and 4 are not accepted values for internalformat. An image with height or width of 0 indicates a NULL texture. When the ­GL_ARB_imaging extension is supported, the RGBA components read from the framebuffer may be processed by the imaging pipeline. See ­glTexImage1D for specific details.
ERRORS­GL_INVALID_ENUM is generated if target is not ­GL_TEXTURE_2D. ­GL_INVALID_VALUE is generated if level is less than 0. ­GL_INVALID_VALUE may be generated if level is greater than log2max, where max is the returned value of ­GL_MAX_TEXTURE_SIZE. ­GL_INVALID_VALUE is generated if width or height is less than 0, greater than 2~+~­GL_MAX_TEXTURE_SIZE, or if width or height cannot be represented as 2k~+~2~*~border for some integer k. ­GL_INVALID_VALUE is generated if border is not 0 or 1. ­GL_INVALID_VALUE is generated if internalformat is not one of the allowable values. ­GL_INVALID_OPERATION is generated if ­glCopyTexImage2D is executed between the execution of ­glBegin and the corresponding execution of ­glEnd.
ASSOCIATED GETS­glGetTexImage
­glIsEnabled with argument ­GL_TEXTURE_2D
SEE ALSO­glCopyPixels(3G), ­glCopyTexImage1D(3G), ­glCopyTexSubImage1D(3G), ­glCopyTexSubImage2D(3G), ­glPixelStore(3G), ­glPixelTransfer(3G), ­glTexEnv(3G), ­glTexGen(3G), ­glTexImage1D(3G), ­glTexImage2D(3G), ­glTexSubImage1D(3G), ­glTexSubImage2D(3G),
­glTexParameter(3G) 0
Johanes Gumabo
Data Size   :   20,225 byte
man-glCopyTexImage2D.3glBuild   :   2024-12-05, 20:55   :  
Visitor Screen   :   x
Visitor Counter ( page / site )   :   5 / 182,531
Visitor ID   :     :  
Visitor IP   :   18.218.250.241   :  
Visitor Provider   :   AMAZON-02   :  
Provider Position ( lat x lon )   :   39.962500 x -83.006100   :   x
Provider Accuracy Radius ( km )   :   10   :  
Provider City   :   Columbus   :  
Provider Province   :   Ohio ,   :   ,
Provider Country   :   United States   :  
Provider Continent   :   North America   :  
Visitor Recorder   :   Version   :  
Visitor Recorder   :   Library   :  
Online Linux Manual Page   :   Version   :   Online Linux Manual Page - Fedora.40 - march=x86-64 - mtune=generic - 24.12.05
Online Linux Manual Page   :   Library   :   lib_c - 24.10.03 - march=x86-64 - mtune=generic - Fedora.40
Online Linux Manual Page   :   Library   :   lib_m - 24.10.03 - march=x86-64 - mtune=generic - Fedora.40
Data Base   :   Version   :   Online Linux Manual Page Database - 24.04.13 - march=x86-64 - mtune=generic - fedora-38
Data Base   :   Library   :   lib_c - 23.02.07 - march=x86-64 - mtune=generic - fedora.36
Very long time ago, I have the best tutor, Wenzel Svojanovsky . If someone knows the email address of Wenzel Svojanovsky , please send an email to johanes_gumabo@yahoo.co.id .
If error, please print screen and send to johanes_gumabo@yahoo.co.id
Under development. Support me via PayPal.