2cc374a0c8
Buffer objects can contain arbitrary pointers to blocks. We can also implement ConvertPtrToU and ConvertUToPtr. The latter can cast a uint64_t to any type as it pleases, so we will need to generate fake buffer reference blocks to be able to cast the type.
41 lines
789 B
Plaintext
41 lines
789 B
Plaintext
#version 450
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#extension GL_EXT_buffer_reference : require
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#extension GL_ARB_gpu_shader_int64 : require
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layout(buffer_reference) buffer Node;
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layout(buffer_reference) buffer Node
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{
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int value;
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layout(offset = 16) Node next;
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layout(offset = 32) Node prev;
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};
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layout(std430, set = 0, binding = 0) buffer LinkedList
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{
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restrict Node head1;
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restrict Node head2;
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};
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void copy_node(restrict Node dst, restrict Node a, restrict Node b)
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{
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dst.value = a.value + b.value;
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}
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void overwrite_node(out Node dst, Node src)
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{
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dst = src;
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}
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void main()
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{
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restrict Node n = gl_WorkGroupID.x < 4u ? head1 : head2;
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copy_node(n.next, head1, head2);
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overwrite_node(n, head1);
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int v = head2.value;
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n.value = 20;
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n.value = v * 10;
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uint64_t uptr = uint64_t(head2.next);
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Node unode = Node(uptr);
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}
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