:right-sidebar: True

ShaderArgsBuilder
===================================================================

.. currentmodule:: gi.repository.Gsk





.. class:: ShaderArgsBuilder(**kwargs)
   :no-contents-entry:






An object to build the uniforms data for a ``GskGLShader``\.


Constructors
------------

.. rst-class:: interim-class

.. class:: ShaderArgsBuilder
   :no-index:


   .. classmethod:: new(shader: ~gi.repository.Gsk.GLShader, initial_values: ~gi.repository.GLib.Bytes | None = None) -> ~gi.repository.Gsk.ShaderArgsBuilder

      Allocates a builder that can be used to construct a new uniform data
      chunk.





      .. deprecated:: 4.16

         GTK's new Vulkan-focused rendering
           does not support this feature. Use `GtkGLArea <../gtk4/class.GLArea.html>`__
           for OpenGL rendering.



      :param shader: a ``GskGLShader``

      :param initial_values: optional ``GBytes`` with initial values








Methods
-------

.. rst-class:: interim-class

.. class:: ShaderArgsBuilder
   :no-index:


   .. method:: set_bool(idx: int, value: bool) -> None

      Sets the value of the uniform ``idx``\.

      The uniform must be of bool type.





      .. deprecated:: 4.16

         GTK's new Vulkan-focused rendering
           does not support this feature. Use `GtkGLArea <../gtk4/class.GLArea.html>`__
           for OpenGL rendering.



      :param idx: index of the uniform

      :param value: value to set the uniform to




   .. method:: set_float(idx: int, value: float) -> None

      Sets the value of the uniform ``idx``\.

      The uniform must be of float type.






      :param idx: index of the uniform

      :param value: value to set the uniform to




   .. method:: set_int(idx: int, value: int) -> None

      Sets the value of the uniform ``idx``\.

      The uniform must be of int type.





      .. deprecated:: 4.16

         GTK's new Vulkan-focused rendering
           does not support this feature. Use `GtkGLArea <../gtk4/class.GLArea.html>`__
           for OpenGL rendering.



      :param idx: index of the uniform

      :param value: value to set the uniform to




   .. method:: set_uint(idx: int, value: int) -> None

      Sets the value of the uniform ``idx``\.

      The uniform must be of uint type.





      .. deprecated:: 4.16

         GTK's new Vulkan-focused rendering
           does not support this feature. Use `GtkGLArea <../gtk4/class.GLArea.html>`__
           for OpenGL rendering.



      :param idx: index of the uniform

      :param value: value to set the uniform to




   .. method:: set_vec2(idx: int, value: ~gi.repository.Graphene.Vec2) -> None

      Sets the value of the uniform ``idx``\.

      The uniform must be of vec2 type.





      .. deprecated:: 4.16

         GTK's new Vulkan-focused rendering
           does not support this feature. Use `GtkGLArea <../gtk4/class.GLArea.html>`__
           for OpenGL rendering.



      :param idx: index of the uniform

      :param value: value to set the uniform too




   .. method:: set_vec3(idx: int, value: ~gi.repository.Graphene.Vec3) -> None

      Sets the value of the uniform ``idx``\.

      The uniform must be of vec3 type.





      .. deprecated:: 4.16

         GTK's new Vulkan-focused rendering
           does not support this feature. Use `GtkGLArea <../gtk4/class.GLArea.html>`__
           for OpenGL rendering.



      :param idx: index of the uniform

      :param value: value to set the uniform too




   .. method:: set_vec4(idx: int, value: ~gi.repository.Graphene.Vec4) -> None

      Sets the value of the uniform ``idx``\.

      The uniform must be of vec4 type.





      .. deprecated:: 4.16

         GTK's new Vulkan-focused rendering
           does not support this feature. Use `GtkGLArea <../gtk4/class.GLArea.html>`__
           for OpenGL rendering.



      :param idx: index of the uniform

      :param value: value to set the uniform too




   .. method:: to_args() -> ~gi.repository.GLib.Bytes

      Creates a new ``GBytes`` args from the current state of the
      given ``builder``\.

      Any uniforms of the shader that have not been explicitly set on
      the ``builder`` are zero-initialized.

      The given ``GskShaderArgsBuilder`` is reset once this function returns;
      you cannot call this function multiple times on the same ``builder`` instance.

      This function is intended primarily for bindings. C code should use
      :obj:`~gi.repository.Gsk.ShaderArgsBuilder.free_to_args`\.





      .. deprecated:: 4.16

         GTK's new Vulkan-focused rendering
           does not support this feature. Use `GtkGLArea <../gtk4/class.GLArea.html>`__
           for OpenGL rendering.