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f47887d207
And remove the WrapArraysInStructs transform. Wrapping arrays in structures becomes troublesome for `const` arrays, as currently WGSL does not allow `const` structures. MSL 2.0+ has a builtin array<> helper, but we're targetting MSL 1.2, so we have to emit our own. Fortunately, it can be done with a few lines of templated code. This produces significantly cleaner output. Change-Id: Ifc92ef21e09befa252a07c856c4b5afdc51cc2e4 Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/94540 Kokoro: Kokoro <noreply+kokoro@google.com> Commit-Queue: Ben Clayton <bclayton@chromium.org> Reviewed-by: David Neto <dneto@google.com>
43 lines
1.3 KiB
Plaintext
43 lines
1.3 KiB
Plaintext
#include <metal_stdlib>
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using namespace metal;
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template<typename T, size_t N>
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struct tint_array {
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const constant T& operator[](size_t i) const constant { return elements[i]; }
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device T& operator[](size_t i) device { return elements[i]; }
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const device T& operator[](size_t i) const device { return elements[i]; }
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thread T& operator[](size_t i) thread { return elements[i]; }
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const thread T& operator[](size_t i) const thread { return elements[i]; }
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threadgroup T& operator[](size_t i) threadgroup { return elements[i]; }
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const threadgroup T& operator[](size_t i) const threadgroup { return elements[i]; }
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T elements[N];
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};
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struct S {
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/* 0x0000 */ float f;
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/* 0x0004 */ uint u;
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/* 0x0008 */ tint_array<int8_t, 120> tint_pad;
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/* 0x0080 */ float4 v;
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/* 0x0090 */ tint_array<int8_t, 112> tint_pad_1;
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};
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struct tint_symbol_1 {
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float f [[user(locn0)]];
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uint u [[user(locn1)]] [[flat]];
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};
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void frag_main_inner(S input, device S* const tint_symbol_3) {
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float const f = input.f;
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uint const u = input.u;
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float4 const v = input.v;
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*(tint_symbol_3) = input;
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}
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fragment void frag_main(device S* tint_symbol_4 [[buffer(0)]], float4 v [[position]], tint_symbol_1 tint_symbol [[stage_in]]) {
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S const tint_symbol_2 = {.f=tint_symbol.f, .u=tint_symbol.u, .v=v};
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frag_main_inner(tint_symbol_2, tint_symbol_4);
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return;
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}
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