// Valid declarations:
layout(vulkan, input_attachment_index=0, set=0, binding=0) subpassInput subpass1; // valid
layout(vulkan, set=0, binding=0) uniform ubo { float a; };                        // valid
layout(vulkan, set=0, binding=0) buffer ssbo { float b; };                        // valid
layout(vulkan, rgba32f, set=0, binding=0) readonly texture2D rtexture1;           // valid
layout(vulkan, rgba32f, set=0, binding=0) writeonly texture2D wtexture1;          // valid
layout(vulkan, set=0, binding=0) sampler2D sampler1;                              // valid

// Invalid declarations:
layout(vulkan, rgba32f, input_attachment_index=0,
       set=0, binding=0) subpassInput subpass2;                    // invalid (has pixformat)
layout(vulkan, rgba32f, texture=0) readonly texture2D rtexture2;   // invalid (no set/binding)
layout(vulkan, rgba32f, texture=0) writeonly texture2D wtexture2;  // invalid (no set/binding)
layout(vulkan, set=0, binding=0) readonly texture2D rtexture3;     // invalid (no pixformat)
layout(vulkan, set=0, binding=0) writeonly texture2D wtexture3;    // invalid (no pixformat)
layout(vulkan, texture=0, sampler=0) sampler2D sampler2;           // invalid

/*%%*
layout qualifier 'rgba32f' is not permitted here
layout qualifier 'texture' is not permitted here
layout qualifier 'texture' is not permitted here
storage textures must declare a pixel format
storage textures must declare a pixel format
layout qualifier 'texture' is not permitted here
layout qualifier 'sampler' is not permitted here
*%%*/