nir_alu_instr *vec = create_vec(b->shader, num_components,
srcs[0]->bit_size);
+ /* From the SPIR-V 1.1 spec for OpCompositeConstruct:
+ *
+ * "When constructing a vector, there must be at least two Constituent
+ * operands."
+ */
+ assert(num_srcs >= 2);
+
unsigned dest_idx = 0;
for (unsigned i = 0; i < num_srcs; i++) {
nir_ssa_def *src = srcs[i];
+ assert(dest_idx + src->num_components <= num_components);
for (unsigned j = 0; j < src->num_components; j++) {
vec->src[dest_idx].src = nir_src_for_ssa(src);
vec->src[dest_idx].swizzle[0] = j;
}
}
+ /* From the SPIR-V 1.1 spec for OpCompositeConstruct:
+ *
+ * "When constructing a vector, the total number of components in all
+ * the operands must equal the number of components in Result Type."
+ */
+ assert(dest_idx == num_components);
+
nir_builder_instr_insert(&b->nb, &vec->instr);
return &vec->dest.dest.ssa;