dawn-cmake/test/bug/tint/534.wgsl.expected.msl
Corentin Wallez e33b0baa08 Revert "MSL writer: make signed int overflow defined behaviour"
This reverts commit e5dbe24e942a32d4077a352b2634ef9acbbb669d.

Reason for revert: Makes the Tint-Dawn roll fails because of
MSL compilation errors on as_type<uint>(-2147483648):
as_type cast from 'long' to 'uint' (aka 'unsigned int') is not allowed
   
as_type<uint>(-2147483647) compiles fine, so this is most
likely because the MSL compiler types the literal as a long
(since without the - it is larger than the max int32).

Original change's description:
> MSL writer: make signed int overflow defined behaviour
>
> Bug: tint:124
> Change-Id: Icf545b633d6390ceb7f639e80111390005e311a1
> Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/60100
> Kokoro: Kokoro <noreply+kokoro@google.com>
> Commit-Queue: Antonio Maiorano <amaiorano@google.com>
> Reviewed-by: David Neto <dneto@google.com>

TBR=dneto@google.com,bclayton@google.com,jrprice@google.com,amaiorano@google.com,noreply+kokoro@google.com,tint-scoped@luci-project-accounts.iam.gserviceaccount.com

Change-Id: I3e3384a9185013bb141a1b7b9b22bad8571bbc50
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: tint:124
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/60345
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Ben Clayton <bclayton@google.com>
Auto-Submit: Corentin Wallez <cwallez@chromium.org>
Commit-Queue: Ben Clayton <bclayton@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
2021-07-30 08:22:58 +00:00

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#include <metal_stdlib>
using namespace metal;
struct Uniforms {
/* 0x0000 */ uint dstTextureFlipY;
/* 0x0004 */ uint isFloat16;
/* 0x0008 */ uint isRGB10A2Unorm;
/* 0x000c */ uint channelCount;
};
struct OutputBuf {
/* 0x0000 */ uint result[1];
};
uint ConvertToFp16FloatValue(float fp32) {
return 1u;
}
kernel void tint_symbol(texture2d<float, access::sample> tint_symbol_2 [[texture(0)]], texture2d<float, access::sample> tint_symbol_3 [[texture(1)]], uint3 GlobalInvocationID [[thread_position_in_grid]], constant Uniforms& uniforms [[buffer(3)]], device OutputBuf& output [[buffer(2)]]) {
int2 size = int2(tint_symbol_2.get_width(), tint_symbol_2.get_height());
int2 dstTexCoord = int2(GlobalInvocationID.xy);
int2 srcTexCoord = dstTexCoord;
if ((uniforms.dstTextureFlipY == 1u)) {
srcTexCoord.y = ((size.y - dstTexCoord.y) - 1);
}
float4 srcColor = tint_symbol_2.read(uint2(srcTexCoord), 0);
float4 dstColor = tint_symbol_3.read(uint2(dstTexCoord), 0);
bool success = true;
uint4 srcColorBits = 0u;
uint4 dstColorBits = uint4(dstColor);
for(uint i = 0u; (i < uniforms.channelCount); i = (i + 1u)) {
srcColorBits[i] = ConvertToFp16FloatValue(srcColor[i]);
success = (success && (srcColorBits[i] == dstColorBits[i]));
}
uint outputIndex = ((GlobalInvocationID.y * uint(size.x)) + GlobalInvocationID.x);
if (success) {
output.result[outputIndex] = uint(1);
} else {
output.result[outputIndex] = uint(0);
}
return;
}