fb5ee4cb5c
This command allows the caller to set the base value of `BuiltInWorkgroupId`, and thus of `BuiltInGlobalInvocationId`. Metal provides no direct support for this... but it does provide a builtin, `[[grid_origin]]`, normally used to pass the base values for the stage input region, which we will now abuse to pass the dispatch base and avoid burning a buffer binding. `[[grid_origin]]`, as part of Metal's support for compute stage input, requires MSL 1.2. For 1.0 and 1.1, we're forced to provide a buffer. (Curiously, this builtin was undocumented until the MSL 2.2 release. Go figure.)
35 lines
844 B
Plaintext
35 lines
844 B
Plaintext
#pragma clang diagnostic ignored "-Wunused-variable"
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#include <metal_stdlib>
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#include <simd/simd.h>
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#include <metal_atomic>
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using namespace metal;
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struct SSBO
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{
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float4 in_data[1];
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};
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struct SSBO2
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{
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float4 out_data[1];
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};
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struct SSBO3
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{
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uint counter;
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};
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kernel void main0(constant uint3& spvDispatchBase [[buffer(29)]], const device SSBO& _27 [[buffer(0)]], device SSBO2& _49 [[buffer(1)]], device SSBO3& _52 [[buffer(2)]], uint3 gl_GlobalInvocationID [[thread_position_in_grid]])
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{
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gl_GlobalInvocationID += spvDispatchBase * uint3(1, 1, 1);
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float4 _33 = _27.in_data[gl_GlobalInvocationID.x];
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if (dot(_33, float4(1.0, 5.0, 6.0, 2.0)) > 8.19999980926513671875)
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{
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uint _56 = atomic_fetch_add_explicit((device atomic_uint*)&_52.counter, 1u, memory_order_relaxed);
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_49.out_data[_56] = _33;
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}
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}
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