GLGETUNIFORMSUBROUTI(3G)

📦
version 1.1 · 7 versions
, in centos-stream 9

🌸 NAME 🌸

okay so welcome to the GLGETUNIFORMSUBROUTI(3G) manual page — yes, the header has a [FIXME: manual] tag, iconic. Anyway, bestie, the actual NAME situation is:

  • glGetUniformSubroutine — retrieve the value of a subroutine uniform of a given shader stage of the current program. 💅✨

🧾 C SPECIFICATION 🧾

the C signature is literally this, no cap:

void glGetUniformSubroutineuiv(GLenum shadertype, GLint location,
                               GLuint *values);

🎀 PARAMETERS 🎀

  • shadertype — specifies the shader stage from which to query for subroutine uniform index. <hotpink>bestie, it must be one of</hotpink> GL_VERTEX_SHADER, GL_TESS_CONTROL_SHADER, GL_TESS_EVALUATION_SHADER, GL_GEOMETRY_SHADER or GL_FRAGMENT_SHADER.
  • location — specifies the location of the subroutine uniform. 📍
  • values — specifies the address of a variable to receive the value or values of the subroutine uniform. 🫶

🦋 DESCRIPTION 🦋

okay so here’s the vibe: glGetUniformSubroutine retrieves the value of the subroutine uniform at location location for shader stage shadertype of the current program.

location must be less than the value of GL_ACTIVE_SUBROUTINE_UNIFORM_LOCATIONS for the shader currently in use at shader stage shadertype. The value of the subroutine uniform is returned in values. ✨

💀 ERRORS 💀

  • GL_INVALID_ENUM is generated if shadertype is not one of the accepted values.
  • GL_INVALID_VALUE is generated if location is greater than or equal to the value of GL_ACTIVE_SUBROUTINE_UNIFORM_LOCATIONS for the shader currently in use at shader stage shadertype.
  • GL_INVALID_OPERATION is generated if no program is active. 😭

👑 VERSION SUPPORT 👑

OpenGL Version check for glGetUniformSubroutineuiv — feature name glGetUniformSubroutineuiv, bestie:

  • OpenGL 2.0: -
  • OpenGL 2.1: -
  • OpenGL 3.0: -
  • OpenGL 3.1: -
  • OpenGL 3.2: -
  • OpenGL 3.3: -
  • OpenGL 4.0: ✔
  • OpenGL 4.1: ✔
  • OpenGL 4.2: ✔
  • OpenGL 4.3: ✔
  • OpenGL 4.4: ✔
  • OpenGL 4.5: ✔

the check marks are eating, fr fr 🌈⭐

🌈 SEE ALSO 🌈

  • glGetProgram()
  • glGetActiveSubroutineUniform()
  • glGetActiveSubroutineUniformName()
  • glGetUniformLocation()

Copyright © 2010-2014 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/.

Copyright © 2010-2014 Khronos Group.

that’s the whole page, bestie — the footer/source tag is [FIXME: source], and the date on it is 08/09/2021 💖✨🫶

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