glinvalidatetexsubimage(3g) [centos man page]
GLINVALIDATETEXSUBIM(3G) OpenGL Manual GLINVALIDATETEXSUBIM(3G) NAME
glInvalidateTexSubImage - invalidate a region of a texture image C SPECIFICATION
void glInvalidateTexSubImage(GLuint texture, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLsizei width, GLsizei height, GLsizei depth); PARAMETERS
texture The name of a texture object a subregion of which to invalidate. level The level of detail of the texture object within which the region resides. xoffset The X offset of the region to be invalidated. yoffset The Y offset of the region to be invalidated. zoffset The Z offset of the region to be invalidated. width The width of the region to be invalidated. height The height of the region to be invalidated. depth The depth of the region to be invalidated. DESCRIPTION
glInvalidateTexSubImage invalidates all or part of a texture image. texture and level indicated which texture image is being invalidated. After this command, data in that subregion have undefined values. xoffset, yoffset, zoffset, width, height, and depth are interpreted as they are in glTexSubImage3D(). For texture targets that don't have certain dimensions, this command treats those dimensions as having a size of 1. For example, to invalidate a portion of a two- dimensional texture, the application would use zoffset equal to zero and depth equal to one. Cube map textures are treated as an array of six slices in the z-dimension, where a value of zoffset is interpreted as specifying face TEXTURE_CUBE_MAP_POSITIVE_X + zoffset. level must be greater than or equal to zero and be less than the base 2 logarithm of the maximum texture width, height, or depth. xoffset, yoffset and zoffset must be greater than or equal to zero and be less than the width, height or depth of the image, respectively. Furthermore, xoffset + width, yoffset + height, and zoffset + depth must be less than or equal to the width, height or depth of the image, respectively. For textures of targets GL_TEXTURE_RECTANGLE, GL_TEXTURE_BUFFER, GL_TEXTURE_2D_MULTISAMPLE, or GL_TEXTURE_2D_MULTISAMPLE_ARRAY, level must be zero. ERRORS
GL_INVALID_VALUE is generated if xoffset, yoffset or zoffset is less than zero, or if any of them is greater than the size of the image in the corresponding dimension. GL_INVALID_VALUE is generated if level is less than zero or if it is greater or equal to the base 2 logarithm of the maximum texture width, height, or depth. GL_INVALID_VALUE is generated if the target of texture is any of GL_TEXTURE_RECTANGLE, GL_TEXTURE_BUFFER, GL_TEXTURE_2D_MULTISAMPLE, or GL_TEXTURE_2D_MULTISAMPLE_ARRAY and level is not zero. GL_INVALID_VALUE is generated if texture is not the name of an existing texture object. ASSOCIATED GETS
glGet() with argument GL_MAX_TEXTURE_SIZE SEE ALSO
glInvalidateTexImage(),, glInvalidateBufferSubData(), glInvalidateBufferData(), glInvalidateFramebuffer(), glInvalidateSubFramebuffer(). COPYRIGHT
Copyright (C) 2012 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. http://opencontent.org/openpub/. AUTHORS
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GLTEXSUBIMAGE3D(3G) OpenGL Manual GLTEXSUBIMAGE3D(3G) NAME
glTexSubImage3D - specify a three-dimensional texture subimage C SPECIFICATION
void glTexSubImage3D(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLsizei width, GLsizei height, GLsizei depth, GLenum format, GLenum type, const GLvoid * data); PARAMETERS
target Specifies the target texture. Must be GL_TEXTURE_3D or GL_TEXTURE_2D_ARRAY. 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. yoffset Specifies a texel offset in the y direction within the texture array. zoffset Specifies a texel offset in the z direction within the texture array. width Specifies the width of the texture subimage. height Specifies the height of the texture subimage. depth Specifies the depth 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, and GL_BGRA. 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. data 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. glTexSubImage3D redefines a contiguous subregion of an existing three-dimensional or two-dimensioanl array texture image. The texels referenced by data replace the portion of the existing texture array with x indices xoffset and xoffset + width - 1, inclusive, y indices yoffset and yoffset + height - 1, inclusive, and z indices zoffset and zoffset + depth - 1, inclusive. For three-dimensional textures, the z index refers to the third dimension. For two-dimensional array textures, the z index refers to the slice index. 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 zero width, height, or depth 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, data is treated as a byte offset into the buffer object's data store. NOTES
The glPixelStore() modes affect texture images. glTexSubImage3D specifies a three-dimensional or two-dimenaional array subtexture for the current texture unit, specified with glActiveTexture(). ERRORS
GL_INVALID_ENUM is generated if /target is not GL_TEXTURE_3D or GL_TEXTURE_2D_ARRAY. 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 2max, where max is the returned value of GL_MAX_TEXTURE_SIZE. GL_INVALID_VALUE is generated if xoffset < - b, xoffset + width > w - b, yoffset < - b, or yoffset + height > h - b, or zoffset < - b, or zoffset + depth > d - b, where w is the GL_TEXTURE_WIDTH, h is the GL_TEXTURE_HEIGHT, d is the GL_TEXTURE_DEPTH and b is the border width of the texture image being modified. Note that w, h, and d include twice the border width. GL_INVALID_VALUE is generated if width, height, or depth is less than 0. GL_INVALID_OPERATION is generated if the texture array has not been defined by a previous glTexImage3D() or glTexStorage3D() 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 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 data 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_BINDING SEE ALSO
glActiveTexture(), glCopyTexImage1D(), glCopyTexImage2D(), glCopyTexSubImage1D(), glCopyTexSubImage2D(), glCopyTexSubImage3D(), glPixelStore(), glTexImage1D(), glTexImage2D(), glTexImage3D(), glTexSubImage1D(), glTexSubImage2D(), glTexParameter() COPYRIGHT
Copyright (C) 1991-2006 Silicon Graphics, Inc. This document is licensed under the SGI Free Software B License. For details, see http://oss.sgi.com/projects/FreeB/. AUTHORS
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