7b361499c9
This adds Analysis::IsConstantExpression, to determine if an expression is a constant-expression. It now expands to cover 'const' local and global variables, because we also enforce that the initializer on those variables is - in turn - a constant expression. This fixes 10837 - previously you could initialize a const variable with a non-constant expression, and we'd emit GLSL that contained that same pattern, which would fail to compile at the driver level. That should not be possible any longer. Bug: skia:10679 Bug: skia:10837 Change-Id: I517820ef4da57fff45768c0b04c55aebc18d3272 Reviewed-on: https://skia-review.googlesource.com/c/skia/+/375856 Reviewed-by: John Stiles <johnstiles@google.com> Commit-Queue: Brian Osman <brianosman@google.com>
28 lines
661 B
Metal
28 lines
661 B
Metal
#include <metal_stdlib>
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#include <simd/simd.h>
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using namespace metal;
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struct Uniforms {
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float4 colorGreen;
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float4 colorRed;
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};
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struct Inputs {
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};
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struct Outputs {
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float4 sk_FragColor [[color(0)]];
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};
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fragment Outputs fragmentMain(Inputs _in [[stage_in]], constant Uniforms& _uniforms [[buffer(0)]], bool _frontFacing [[front_facing]], float4 _fragCoord [[position]]) {
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Outputs _out;
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(void)_out;
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float4 c = abs(float4(1.0));
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if (any(float4(1.0) != c)) {
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_out.sk_FragColor = _uniforms.colorRed;
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return _out;
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} else {
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_out.sk_FragColor = _uniforms.colorGreen;
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return _out;
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}
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return _out;
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}
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