glCreateShader — Creates a shader object
GLuint glCreateShader( | GLenum | shaderType); |
shaderTypeSpecifies the type of shader to be created.
Must be either GL_VERTEX_SHADER
or GL_FRAGMENT_SHADER.
glCreateShader creates an empty
shader object and returns a non-zero value by which it can be
referenced. A shader object is used to maintain the source code
strings that define a shader. shaderType
indicates the type of shader to be created. Two types of shaders
are supported. A shader of type
GL_VERTEX_SHADER is a shader that is
intended to run on the programmable vertex processor and replace
the fixed functionality vertex processing in OpenGL. A shader of
type GL_FRAGMENT_SHADER is a shader that is
intended to run on the programmable fragment processor and
replace the fixed functionality fragment processing in
OpenGL.
When created, a shader object's
GL_SHADER_TYPE parameter is set to either
GL_VERTEX_SHADER or
GL_FRAGMENT_SHADER, depending on the value
of shaderType.
glCreateShader is available only if
the GL version is 2.0 or greater.
Like display lists and texture objects, the name space for shader objects may be shared across a set of contexts, as long as the server sides of the contexts share the same address space. If the name space is shared across contexts, any attached objects and the data associated with those attached objects are shared as well.
Applications are responsible for providing the synchronization across API calls when objects are accessed from different execution threads.
This function returns 0 if an error occurs creating the shader object.
GL_INVALID_ENUM is generated if
shaderType is not an accepted value.
GL_INVALID_OPERATION is generated if
glCreateShader is executed between the
execution of
glBegin
and the corresponding execution of
glEnd.
glGetShader with a valid shader object and the parameter to be queried
glGetShaderInfoLog with a valid shader object
glGetShaderSource with a valid shader object
Copyright © 2003-2005 3Dlabs Inc. Ltd. 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/.