GLCLEARTEXIMAGE - Online Linux Manual PageSection : 3G
Updated : 01/20/2022
Source : [FIXME: source]
Note : [FIXME: manual]
NAMEglClearTexImage − fills all a texture image with a constant value
C SPECIFICATIONvoid glClearTexImage(GLuint texture, GLint level, GLenum format, GLenum type, const void * data);
PARAMETERStexture The name of an existing texture object containing the image to be cleared​. level The level of texture containing the region to be cleared​. format The format of the data whose address in memory is given by data​. type The type of the data whose address in memory is given by data​. data The address in memory of the data to be used to clear the specified region​.
DESCRIPTIONglClearTexImage fills all an image contained in a texture with an application supplied value​. texture must be the name of an existing texture​. Further, texture may not be the name of a buffer texture, nor may its internal format be compressed​. format and type specify the format and type of the source data and are interpreted as they are for glTexImage3D()​. Textures with a base internal format of GL_DEPTH_COMPONENT, GL_STENCIL_INDEX, or GL_DEPTH_STENCIL require depth component, stencil, or depth−stencil component data respectively​. Textures with other base internal formats require RGBA formats​. Textures with integer internal formats require integer data​. data is a pointer to an array of between one and four components of texel data that will be used as the source for the constant fill value​. The elements of data are converted by the GL into the internal format of the texture image (that was specified when the level was defined by any of the glTexImage*, glTexStorage* or glCopyTexImage* commands), and then used to fill the specified range of the destination texture level​. If data is NULL, then the pointer is ignored and the sub−range of the texture image is filled with zeros​. If texture is a multisample texture, all the samples in a texel are cleared to the value specified by data​.
NOTESglClearTexImage is available only if the GL version is 4​.4 or greater​.
ERRORSGL_INVALID_OPERATION is generated if texture is zero or not the name of an existing texture object​. GL_INVALID_OPERATION is generated if texture is a buffer texture​. GL_INVALID_OPERATION is generated if texture has a compressed internal format​. GL_INVALID_OPERATION is generated if the base internal format is GL_DEPTH_COMPONENT and format is not GL_DEPTH_COMPONENT​. GL_INVALID_OPERATION is generated if the base internal format is GL_DEPTH_STENCIL and format is not GL_DEPTH_STENCIL​. GL_INVALID_OPERATION is generated if the base internal format is GL_STENCIL_INDEX and format is not GL_STENCIL_INDEX​. GL_INVALID_OPERATION is generated if the base internal format is GL_RGBA and format is GL_DEPTH_COMPONENT, GL_STENCIL_INDEX, or GL_DEPTH_STENCIL​. GL_INVALID_OPERATION is generated if the internal format is integer and format does not specify integer data​. GL_INVALID_OPERATION is generated if the internal format is not integer and format specifies integer data​. GL_INVALID_OPERATION is generated if the image array identified by level has not previously been defined by a call to glTexImage* or glTexStorage*​.
ASSOCIATED GETSglGetTexImage(), glGetInternalformat()
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 glClearTexImage − − − − − − − − − − ✔ ✔
SEE ALSOglClearTexSubImage(), glTexStorage1D(), glTexStorage2D(), glTexStorage3D(), glTexImage1D(), glTexImage2D(), glTexImage3D()
COPYRIGHTCopyright © 2013−2014 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​. http://opencontent​.org/openpub/​.
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Copyright © 2013-2014 Khronos Group
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