table of contents
GLTEXSUBIMAGE1D(3G) | [FIXME: manual] | GLTEXSUBIMAGE1D(3G) |
NAME¶
glTexSubImage1D, glTextureSubImage1D - specify a one-dimensional texture subimageC SPECIFICATION¶
void 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);
PARAMETERS¶
targetSpecifies 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.
DESCRIPTION¶
Texturing 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.NOTES¶
glPixelStore() 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.ERRORS¶
GL_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 GETS¶
glGetTexImage() glGet() with argument GL_PIXEL_UNPACK_BUFFER_BINDINGVERSION SUPPORT¶
OpenGL Version | ||||||||||||
Function / Feature Name | 2.0 | 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 ALSO¶
glActiveTexture(), glCopyTexImage1D(), glCopyTexImage2D(), glCopyTexSubImage1D(), glCopyTexSubImage2D(), glCopyTexSubImage3D(), glPixelStore(), glTexImage1D(), glTexImage2D(), glTexImage3D(), glTexParameter(), glTexSubImage2D(), glTexSubImage3D()COPYRIGHT¶
Copyright © 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/.COPYRIGHT¶
Copyright © 1991-2006 Silicon Graphics, Inc.08/26/2014 | [FIXME: source] |