spirv: implement Volatile image operand

Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6090>

src/compiler/spirv/spirv_to_nir.c

@@ -3041,7 +3041,8 @@ vtn_handle_image(struct vtn_builder *b, SpvOp opcode,
          image.lod = nir_imm_int(&b->nb, 0);
       }
 
-      /* TODO: Volatile. */
+      if (operands & SpvImageOperandsVolatileTexelMask)
+         access |= ACCESS_VOLATILE;
 
       break;
    }
@@ -3081,7 +3082,8 @@ vtn_handle_image(struct vtn_builder *b, SpvOp opcode,
          image.lod = nir_imm_int(&b->nb, 0);
       }
 
-      /* TODO: Volatile. */
+      if (operands & SpvImageOperandsVolatileTexelMask)
+         access |= ACCESS_VOLATILE;
 
       break;
    }