SPIRV-Cross/reference/shaders/comp/composite-construct.comp
Hans-Kristian Arntzen d92de00cc1 Rewrite how IDs are iterated over.
This is a fairly fundamental change on how IDs are handled.
It serves many purposes:

- Improve performance. We only need to iterate over IDs which are
  relevant at any one time.
- Makes sure we iterate through IDs in SPIR-V module declaration order
  rather than ID space. IDs don't have to be monotonically increasing,
  which was an assumption SPIRV-Cross used to have. It has apparently
  never been a problem until now.
- Support LUTs of structs. We do this by interleaving declaration of
  constants and struct types in SPIR-V module order.

To support this, the ParsedIR interface needed to change slightly.
Before setting any ID with variant_set<T> we let ParsedIR know
that an ID with a specific type has been added. The surface for change
should be minimal.

ParsedIR will maintain a per-type list of IDs which the cross-compiler
will need to consider for later.

Instead of looping over ir.ids[] (which can be extremely large), we loop
over types now, using:

ir.for_each_typed_id<SPIRVariable>([&](uint32_t id, SPIRVariable &var) {
	handle_variable(var);
});

Now we make sure that we're never looking at irrelevant types.
2019-01-10 12:52:56 +01:00

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#version 310 es
layout(local_size_x = 1, local_size_y = 1, local_size_z = 1) in;
const vec4 _66[2] = vec4[](vec4(10.0), vec4(30.0));
struct Composite
{
vec4 a[2];
vec4 b[2];
};
const float _94[2][3] = float[][](float[](1.0, 1.0, 1.0), float[](2.0, 2.0, 2.0));
layout(binding = 0, std430) buffer SSBO0
{
vec4 as[];
} _41;
layout(binding = 1, std430) buffer SSBO1
{
vec4 bs[];
} _55;
vec4 summe(vec4 values[3][2])
{
return ((values[0][0] + values[2][1]) + values[0][1]) + values[1][0];
}
void main()
{
vec4 values[2] = vec4[](_41.as[gl_GlobalInvocationID.x], _55.bs[gl_GlobalInvocationID.x]);
vec4 copy_values[2] = _66;
vec4 copy_values2[2] = values;
vec4 param[3][2] = vec4[][](values, copy_values, copy_values2);
_41.as[gl_GlobalInvocationID.x] = summe(param);
Composite c = Composite(values, copy_values);
float b = 10.0;
float values_scalar[4] = float[](b, b, b, b);
}