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a5d73ce965
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>
25 lines
860 B
Plaintext
25 lines
860 B
Plaintext
#include <metal_stdlib>
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using namespace metal;
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struct Constants {
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/* 0x0000 */ int level;
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};
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struct Result {
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/* 0x0000 */ float values[1];
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};
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void tint_symbol_inner(device Result& result, uint3 GlobalInvocationID, texture2d_array<float, access::sample> tint_symbol_1) {
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uint flatIndex = ((((2u * 2u) * GlobalInvocationID.z) + (2u * GlobalInvocationID.y)) + GlobalInvocationID.x);
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flatIndex = (flatIndex * 1u);
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float4 texel = tint_symbol_1.read(uint2(int2(GlobalInvocationID.xy)), 0, 0);
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for(uint i = 0u; (i < 1u); i = (i + 1u)) {
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result.values[(flatIndex + i)] = texel.r;
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}
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}
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kernel void tint_symbol(texture2d_array<float, access::sample> tint_symbol_2 [[texture(1)]], uint3 GlobalInvocationID [[thread_position_in_grid]], device Result& result [[buffer(3)]]) {
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tint_symbol_inner(result, GlobalInvocationID, tint_symbol_2);
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return;
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}
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