dawn-cmake/test/intrinsics/gen/modf/a54eca.wgsl.expected.msl
James Price a5d73ce965 transform/shader_io: Generate a wrapper function
This is a major reworking of this transform. The old transform code
was getting unwieldy, with part of the complication coming from the
handling of multiple return statements. By generating a wrapper
function instead, we can avoid a lot of this complexity.

The original entry point function is stripped of all shader IO
attributes (as well as `stage` and `workgroup_size`), but the body is
left unmodified. A new entry point wrapper function is introduced
which calls the original function, packing/unpacking the shader inputs
as necessary, and propagates the result to the corresponding shader
outputs.

The new code has been refactored to use a state object with the
different parts of the transform split into separate functions, which
makes it much more manageable.

Fixed: tint:1076
Bug: tint:920
Change-Id: I3490a0ea7a3509a4e198ce730e476516649d8d96
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/60521
Auto-Submit: James Price <jrprice@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: James Price <jrprice@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
2021-08-04 22:15:28 +00:00

47 lines
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intrinsics/gen/modf/a54eca.wgsl:29:24 warning: use of deprecated intrinsic
var res: vec2<f32> = modf(vec2<f32>(), &arg_1);
^^^^
#include <metal_stdlib>
using namespace metal;
float2 tint_modf(float2 param_0, thread float2* param_1) {
float2 whole;
float2 fract = modf(param_0, whole);
*param_1 = whole;
return fract;
}
struct tint_symbol {
float4 value [[position]];
};
void modf_a54eca() {
float2 arg_1 = 0.0f;
float2 res = tint_modf(float2(), &(arg_1));
}
float4 vertex_main_inner() {
modf_a54eca();
return float4();
}
vertex tint_symbol vertex_main() {
float4 const inner_result = vertex_main_inner();
tint_symbol wrapper_result = {};
wrapper_result.value = inner_result;
return wrapper_result;
}
fragment void fragment_main() {
modf_a54eca();
return;
}
kernel void compute_main() {
modf_a54eca();
return;
}