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glCopyTexImage2D

copy pixels into a 2D texture image

function glCopyTexImage2D(int $target, int $level, int $internalformat, int $x, int $y, int $width, int $height, int $border) : void
arguments
  1. int $target Specifies the target texture. Must be GL_TEXTURE_2D, GL_TEXTURE_CUBE_MAP_POSITIVE_X, GL_TEXTURE_CUBE_MAP_NEGATIVE_X, GL_TEXTURE_CUBE_MAP_POSITIVE_Y, GL_TEXTURE_CUBE_MAP_NEGATIVE_Y, GL_TEXTURE_CUBE_MAP_POSITIVE_Z, or GL_TEXTURE_CUBE_MAP_NEGATIVE_Z.
  2. int $level Specifies the level-of-detail number. Level 0 is the base image level. Level n is the nth mipmap reduction image.
  3. int $internalformat Specifies the internal format of the texture. Must be one of the following symbolic constants: GL_COMPRESSED_RED, GL_COMPRESSED_RG, GL_COMPRESSED_RGB, GL_COMPRESSED_RGBA. GL_COMPRESSED_SRGB, GL_COMPRESSED_SRGB_ALPHA. GL_DEPTH_COMPONENT, GL_DEPTH_COMPONENT16, GL_DEPTH_COMPONENT24, GL_DEPTH_COMPONENT32, GL_STENCIL_INDEX8, GL_RED, GL_RG, 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, GL_RGBA16, GL_SRGB, GL_SRGB8, GL_SRGB_ALPHA, or GL_SRGB8_ALPHA8.
  4. int $x Specify the window coordinates of the lower left corner of the rectangular region of pixels to be copied.
  5. int $y
  6. int $width Specifies the width of the texture image.
  7. int $height Specifies the height of the texture image.
  8. int $border Must be 0.
returns

void

Copyright © 2010-2014 Khronos Group

This material may be distributed subject to the terms and conditions set forth in the Open Publication License, v 1.0, 8 June 1999. https://opencontent.org/openpub/.