Get Shader Constants

Description

Use

A simple script that uses a shader to get the built-in GLSL ES shader constants:

• gl_MaxCombinedTextureImageUnits
• gl_MaxDrawBuffers - Maximum number of render targets
• gl_MaxFragmentUniformVectors
• gl_MaxTextureImageUnits - Maximum number of samplers that you can access in the fragment shader
• gl_MaxVaryingVectors
• gl_MaxVertexAttribs
• gl_MaxVertexTextureImageUnits
• gl_MaxVertexUniformVectors
• _VERSION_ - OpenGL version, returns 100

For a complete overview, see the section 7.4 Built-in Constants in The OpenGL ES Shading Language.

The value of _VERSION_ is included out of convenience.

Using the script

Import all files into your project and execute the script once at the start of the game:

map_constants = shu_get_shader_constants();

map_constants now holds a reference to a ds_map with the above values in it.

End User Licence Agreement (EULA).

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