// Valid declarations:
layout(gl, binding=0) uniform ubo1 { float a; };   // valid
layout(gl, binding=0) buffer ssbo { float b; };    // valid
layout(gl, binding=0) uniform texture2D texture1;  // valid
layout(gl, binding=0) uniform sampler2D sampler1;  // valid

// Invalid declarations:
layout(gl, texture=0) uniform texture2D texture2;             // invalid
layout(gl, texture=0, sampler=0) uniform sampler2D sampler2;  // invalid
layout(gl, set=0, binding=0) uniform ubo2 { float c; };       // invalid

/*%%*
layout qualifier 'texture' is not permitted here
layout qualifier 'texture' is not permitted here
layout qualifier 'sampler' is not permitted here
layout qualifier 'set' is not permitted here
*%%*/