4 // require_extensions: GL_MESA_shader_integer_functions
8 #extension GL_MESA_shader_integer_functions: require
10 /* At most one aux. storage qualifier is allowed.
11 * Note that strictly speaking, under gpu_shader5 / GLSL 4.00,
12 * the storage qualifier is the entire 'centroid in' or 'sample in',
13 * but we use the wording from shading_language_420pack / GLSL 4.20.
15 * A strict gpu_shader5 / GLSL 4.00 implementation should reject this
18 sample centroid in vec4 x;