GLTEXSUBIMAGE1D - Online Linux Manual PageSection : 3G
Updated : 01/20/2022
Source : [FIXME: source]
Note : [FIXME: manual]
NAMEglTexSubImage1D, glTextureSubImage1D − specify a one−dimensional texture subimage
C SPECIFICATIONvoid glTexSubImage1D(GLenum target, GLint level, GLint xoffset, GLsizei width, GLenum format, GLenum type, const GLvoid * pixels); void glTextureSubImage1D(GLuint texture, GLint level, GLint xoffset, GLsizei width, GLenum format, GLenum type, const void *pixels);
PARAMETERStarget Specifies the target to which the texture is bound for glTexSubImage1D. Must be GL_TEXTURE_1D. texture Specifies the texture object name for glTextureSubImage1D. The effective target of texture must be one of the valid target values above. level Specifies the level−of−detail number. Level 0 is the base image level. Level n is the nth mipmap reduction image. xoffset Specifies a texel offset in the x direction within the texture array. width Specifies the width of the texture subimage. format Specifies the format of the pixel data. The following symbolic values are accepted: GL_RED, GL_RG, GL_RGB, GL_BGR, GL_RGBA, GL_DEPTH_COMPONENT, and GL_STENCIL_INDEX. type Specifies the data type of the pixel data. The following symbolic values are accepted: GL_UNSIGNED_BYTE, GL_BYTE, GL_UNSIGNED_SHORT, GL_SHORT, GL_UNSIGNED_INT, GL_INT, GL_FLOAT, GL_UNSIGNED_BYTE_3_3_2, GL_UNSIGNED_BYTE_2_3_3_REV, GL_UNSIGNED_SHORT_5_6_5, GL_UNSIGNED_SHORT_5_6_5_REV, GL_UNSIGNED_SHORT_4_4_4_4, GL_UNSIGNED_SHORT_4_4_4_4_REV, GL_UNSIGNED_SHORT_5_5_5_1, GL_UNSIGNED_SHORT_1_5_5_5_REV, GL_UNSIGNED_INT_8_8_8_8, GL_UNSIGNED_INT_8_8_8_8_REV, GL_UNSIGNED_INT_10_10_10_2, and GL_UNSIGNED_INT_2_10_10_10_REV. pixels Specifies a pointer to the image data in memory.
DESCRIPTIONTexturing maps a portion of a specified texture image onto each graphical primitive for which texturing is enabled. To enable or disable one−dimensional texturing, call glEnable() and glDisable with argument GL_TEXTURE_1D. glTexSubImage1D and glTextureSubImage1D redefine a contiguous subregion of an existing one−dimensional texture image. The texels referenced by pixels replace the portion of the existing texture array with x indices xoffset and xoffset + width − 1, inclusive. This region may not include any texels outside the range of the texture array as it was originally specified. It is not an error to specify a subtexture with width of 0, but such a specification has no effect. If a non−zero named buffer object is bound to the GL_PIXEL_UNPACK_BUFFER target (see glBindBuffer()) while a texture image is specified, pixels is treated as a byte offset into the buffer object's data store.
NOTESglPixelStore() modes affect texture images. glTexSubImage1D and glTextureSubImage1D specify a one−dimensional subtexture for the current texture unit, specified with glActiveTexture(). GL_STENCIL_INDEX is accepted for format only if the GL version is 4.4 or higher.
ERRORSGL_INVALID_ENUM is generated if target or the effective target of texture is not one of the allowable values. GL_INVALID_OPERATION is generated by glTextureSubImage1D if texture is not the name of an existing texture object. GL_INVALID_ENUM is generated if format is not an accepted format constant. GL_INVALID_ENUM is generated if type is not a type constant. GL_INVALID_VALUE is generated if level is less than 0. GL_INVALID_VALUE may be generated if level is greater than log 2 max, where max is the returned value of GL_MAX_TEXTURE_SIZE. GL_INVALID_VALUE is generated if xoffset < − b, or if xoffset + width > w − b, where w is the GL_TEXTURE_WIDTH, and b is the width of the GL_TEXTURE_BORDER of the texture image being modified. Note that w includes twice the border width. GL_INVALID_VALUE is generated if width is less than 0. GL_INVALID_OPERATION is generated if the texture array has not been defined by a previous glTexImage1D() operation. GL_INVALID_OPERATION is generated if type is one of GL_UNSIGNED_BYTE_3_3_2, GL_UNSIGNED_BYTE_2_3_3_REV, GL_UNSIGNED_SHORT_5_6_5, or GL_UNSIGNED_SHORT_5_6_5_REV and format is not GL_RGB. GL_INVALID_OPERATION is generated if type is one of GL_UNSIGNED_SHORT_4_4_4_4, GL_UNSIGNED_SHORT_4_4_4_4_REV, GL_UNSIGNED_SHORT_5_5_5_1, GL_UNSIGNED_SHORT_1_5_5_5_REV, GL_UNSIGNED_INT_8_8_8_8, GL_UNSIGNED_INT_8_8_8_8_REV, GL_UNSIGNED_INT_10_10_10_2, or GL_UNSIGNED_INT_2_10_10_10_REV and format is neither GL_RGBA nor GL_BGRA. GL_INVALID_OPERATION is generated if format is GL_STENCIL_INDEX and the base internal format is not GL_STENCIL_INDEX. GL_INVALID_OPERATION is generated if a non−zero buffer object name is bound to the GL_PIXEL_UNPACK_BUFFER target and the buffer object's data store is currently mapped. GL_INVALID_OPERATION is generated if a non−zero buffer object name is bound to the GL_PIXEL_UNPACK_BUFFER target and the data would be unpacked from the buffer object such that the memory reads required would exceed the data store size. GL_INVALID_OPERATION is generated if a non−zero buffer object name is bound to the GL_PIXEL_UNPACK_BUFFER target and pixels is not evenly divisible into the number of bytes needed to store in memory a datum indicated by type.
ASSOCIATED GETSglGetTexImage() glGet() with argument GL_PIXEL_UNPACK_BUFFER_BINDING
VERSION SUPPORT OpenGL Version Function / Feature Name 2.0 none;'>none;'>none;'>none;'>none;'>none;'>none;'>none;'>none;'>none;'>none;'>none;'>none;'> 2.1 3.0 3.1 3.2 3.3 4.0 4.1 4.2 4.3 4.4 4.5 glTexSubImage1D ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ glTextureSubImage1D − − − − − − − − − − − ✔
SEE ALSOglActiveTexture(), glCopyTexImage1D(), glCopyTexImage2D(), glCopyTexSubImage1D(), glCopyTexSubImage2D(), glCopyTexSubImage3D(), glPixelStore(), glTexImage1D(), glTexImage2D(), glTexImage3D(), glTexParameter(), glTexSubImage2D(), glTexSubImage3D()
COPYRIGHTCopyright © 1991−2006 Silicon Graphics, Inc. Copyright © 2010−2014 Khronos Group. This document is licensed under the SGI Free Software B License. For details, see http://oss.sgi.com/projects/FreeB/.
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Copyright © 1991-2006 Silicon Graphics, Inc.
Copyright © 2010-2014 Khronos Group
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