glgetuniformblockindex(3g) [centos man page]
GLGETUNIFORMBLOCKIND(3G) OpenGL Manual GLGETUNIFORMBLOCKIND(3G) NAME
glGetUniformBlockIndex - retrieve the index of a named uniform block C SPECIFICATION
GLuint glGetUniformBlockIndex(GLuint program, const GLchar *uniformBlockName); PARAMETERS
program Specifies the name of a program containing the uniform block. uniformBlockName Specifies the address an array of characters to containing the name of the uniform block whose index to retrieve. DESCRIPTION
glGetUniformBlockIndex retrieves the index of a uniform block within program. program must be the name of a program object for which the command glLinkProgram() must have been called in the past, although it is not required that glLinkProgram() must have succeeded. The link could have failed because the number of active uniforms exceeded the limit. uniformBlockName must contain a nul-terminated string specifying the name of the uniform block. glGetUniformBlockIndex returns the uniform block index for the uniform block named uniformBlockName of program. If uniformBlockName does not identify an active uniform block of program, glGetUniformBlockIndex returns the special identifier, GL_INVALID_INDEX. Indices of the active uniform blocks of a program are assigned in consecutive order, beginning with zero. ERRORS
GL_INVALID_OPERATION is generated if program is not the name of a program object for which glLinkProgram() has been called in the past. NOTES
glGetUniformBlockIndex is available only if the GL version is 3.1 or greater. SEE ALSO
glGetActiveUniformBlockName(), glGetActiveUniformBlock(), glLinkProgram() COPYRIGHT
Copyright (C) 2010 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
opengl.org opengl.org 06/10/2014 GLGETUNIFORMBLOCKIND(3G)
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GLUNIFORMBLOCKBINDIN(3G) OpenGL Manual GLUNIFORMBLOCKBINDIN(3G) NAME
glUniformBlockBinding - assign a binding point to an active uniform block C SPECIFICATION
void glUniformBlockBinding(GLuint program, GLuint uniformBlockIndex, GLuint uniformBlockBinding); PARAMETERS
program The name of a program object containing the active uniform block whose binding to assign. uniformBlockIndex The index of the active uniform block within program whose binding to assign. uniformBlockBinding Specifies the binding point to which to bind the uniform block with index uniformBlockIndex within program. DESCRIPTION
Binding points for active uniform blocks are assigned using glUniformBlockBinding. Each of a program's active uniform blocks has a corresponding uniform buffer binding point. program is the name of a program object for which the command glLinkProgram() has been issued in the past. If successful, glUniformBlockBinding specifies that program will use the data store of the buffer object bound to the binding point uniformBlockBinding to extract the values of the uniforms in the uniform block identified by uniformBlockIndex. When a program object is linked or re-linked, the uniform buffer object binding point assigned to each of its active uniform blocks is reset to zero. ERRORS
GL_INVALID_VALUE is generated if uniformBlockIndex is not an active uniform block index of program. GL_INVALID_VALUE is generated if uniformBlockBinding is greater than or equal to the value of GL_MAX_UNIFORM_BUFFER_BINDINGS. GL_INVALID_VALUE is generated program is not the name of a program object generated by the GL. NOTES
glUniformBlockBinding is available only if the GL version is 3.1 or greater. ASSOCIATED GETS
glGetActiveUniformBlock() with argument GL_UNIFORM_BLOCK_BINDING SEE ALSO
glLinkProgram(), glBindBufferBase(), glBindBufferRange(), glGetActiveUniformBlock() COPYRIGHT
Copyright (C) 2010 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
opengl.org opengl.org 06/10/2014 GLUNIFORMBLOCKBINDIN(3G)