glShaderBinary — load a precompiled shader binary
|const GLuint *shaders,|
|const void *binary,|
Specifies the number of shader object handles present in
Specifies a pointer to an array of shader object handles into which the shader binary will be loaded.
Specifies the shader binary format.
Specifies a pointer to the shader binary data in client memory.
Specifies the length of the shader binary data in bytes.
For implementations that support them,
glShaderBinary loads precompiled shader binaries.
shaders contains a list of
n shader object handles. Each handle refers to a unique shader type (vertex shader or fragment shader).
binary points to precompiled binary shader code in client memory, and
binaryformat denotes the format of the pre-compiled code.
The binary image is decoded according to the extension specification defining the specified
binaryformat. OpenGL ES defines no specific binary formats, but does provide a mechanism to obtain symbolic constants for such formats provided by extensions. The number of shader binary formats supported can be obtained by querying the value of
GL_NUM_SHADER_BINARY_FORMATS. The list of specific binary formats supported can be obtained by querying the value of
Depending on the types of the shader objects in
glShaderBinary will individually load binary vertex or fragment shaders, or load an executable binary that contains an optimized pair of vertex and fragment shaders stored in the same binary.
glShaderBinary fails, the old state of shader objects for which the binary was being loaded will not be restored.
Shader binary support is optional and thus must be queried before use by calling glGet with arguments
GL_INVALID_OPERATION on implementations that do not support any shader binary formats. Such implementations instead offer the glShaderSource alternative for supplying OpenGL ES Shading Language shader source for compilation.
If shader binary formats are supported, then an implementation may require that an optimized pair of vertex and fragment shader binaries that were compiled together to be specified to glLinkProgram. Not specifying an optimized pair my cause glLinkProgram to fail. Such a restriction, if it exists, will be documented in the extension specification defining
OpenGL copies the shader binary data when
glShaderBinary is called, so an application may free its copy of the data immediately after the function returns.
GL_INVALID_ENUM is generated if
binaryformat is not a supported format returned in
GL_INVALID_VALUE is generated if any value in
shaders is not a vlue generated by OpenGL.
GL_INVALID_VALUE is generated if the format of the data pointed to by
binary does not match
GL_INVALID_VALUE is generated if
length is negative.
GL_INVALID_OPERATION is generated if any value in
shaders is not a shader object, or if there is more than one vertex shader object handle or more than one fragment shader object handle in
glGet with arguments
Copyright © 2008 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/.