Zhaoming Jiang ab9b5f3aa5 Tint: Implement f16 in uniform and storage address space
This CL implements f16 in uniform and storage address space, allowing
using f16 types in uniform and storage buffers on all backends. Tint
uint tests and Dawn E2E tests are added to validate the f16 types work
as expected.

Bug: tint:1473, tint:1502
Change-Id: I15e3de1033d3727f2ea33f4657f682c5f13c2153
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/106320
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Zhaoming Jiang <zhaoming.jiang@intel.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
2022-11-24 05:25:35 +00:00

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#include <metal_stdlib>
using namespace metal;
template<typename T, size_t N>
struct tint_array {
const constant T& operator[](size_t i) const constant { return elements[i]; }
device T& operator[](size_t i) device { return elements[i]; }
const device T& operator[](size_t i) const device { return elements[i]; }
thread T& operator[](size_t i) thread { return elements[i]; }
const thread T& operator[](size_t i) const thread { return elements[i]; }
threadgroup T& operator[](size_t i) threadgroup { return elements[i]; }
const threadgroup T& operator[](size_t i) const threadgroup { return elements[i]; }
T elements[N];
};
struct S {
/* 0x0000 */ half4x3 tint_symbol;
/* 0x0020 */ packed_half3 vector;
/* 0x0026 */ tint_array<int8_t, 2> tint_pad;
};
fragment void tint_symbol_1(const constant S* tint_symbol_2 [[buffer(0)]]) {
half4 const x = (half3((*(tint_symbol_2)).vector) * (*(tint_symbol_2)).tint_symbol);
return;
}