glActiveShaderProgram¶

The glActiveShaderProgram function is used to set the active program object for a program pipeline object. This function takes two integer arguments $pipeline and $program. The pipeline parameter specifies the program pipeline object, and the program parameter specifies the linked program to be the active program.

function glActiveShaderProgram(int $pipeline, int $program) : void

Here is an example usage of glActiveShaderProgram:

$program = glCreateProgram();
glAttachShader($program, $vertexShader);
glAttachShader($program, $fragmentShader);
glLinkProgram($program);

$pipeline = glGenProgramPipelines();
glUseProgramStages($pipeline, GL_VERTEX_SHADER_BIT, $program);
glActiveShaderProgram($pipeline, $program);

Note that before calling glActiveShaderProgram, you should first create a program object, attach shaders to it, link the program, and then create a program pipeline object with glGenProgramPipelines. Also, make sure that the program object referred to by $program has been successfully linked. If not, GL_INVALID_OPERATION will be generated.

arguments

int $pipeline Specifies the program pipeline object to set the active program object for.
int $program Specifies the program object to set as the active program pipeline object pipeline.

returns

void

This material may be distributed subject to the terms and conditions set forth in the Open Publication License, v 1.0, 8 June 1999. https://opencontent.org/openpub/.