glCreateShader — Creates a shader object
Specifies the type of shader to be created.
Must be one of
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.
indicates the type of shader to be created. Three 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. A shader of type
GL_GEOMETRY_SHADER is a shader that is intended to
run on the programmable geometry processor. A shader of
GL_FRAGMENT_SHADER is a shader that is
intended to run on the programmable fragment processor.
When created, a shader object's
GL_SHADER_TYPE parameter is set to either
GL_FRAGMENT_SHADER, depending on the value
Like buffer 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.
glGetShader with a valid shader object and the parameter to be queried
glGetShaderInfoLog with a valid shader object
glGetShaderSource with a valid shader object
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