7a6c2da9aa
GLSL and RelaxedPrecision are quite different in what they affect. RelaxedPrecision affects operations, while this is merely implied in GLSL based on inputs. This leads to situations where we have to promote mediump inputs to highp, and the simplest approach is to force highp temporaries for inputs which are consumed in a highp context. For completeness, we also demote RelaxedPrecision inputs to mediump variables. PHI is handled by copying the PHI into a temporary. We have to be very careful with hoisted temporaries, since the child temporary will not be analyzed up-front. We inherit the hoisted-ness state and emit the hoisted child temporary as necessary. When faking the temporaries with OpCopyObject, we make sure to block any variable hoisting. Hoisting children of PHI variables is fine, since PHIs are not hoisted with the same framework as other temporaries.
27 lines
681 B
GLSL
27 lines
681 B
GLSL
#version 310 es
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precision mediump float;
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precision highp int;
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struct Foobar
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{
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float a;
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float b;
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};
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const vec4 _37[3] = vec4[](vec4(1.0), vec4(2.0), vec4(3.0));
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const vec4 _55[2][2] = vec4[][](vec4[](vec4(1.0), vec4(2.0)), vec4[](vec4(8.0), vec4(10.0)));
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const Foobar _75[2] = Foobar[](Foobar(10.0, 40.0), Foobar(90.0, 70.0));
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layout(location = 0) out vec4 FragColor;
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layout(location = 0) flat in mediump int index;
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void main()
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{
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highp float _106 = _75[index].a;
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float mp_copy_106 = _106;
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highp float _107 = _75[index].b;
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float mp_copy_107 = _107;
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FragColor = ((_37[index] + _55[index][index + 1]) + vec4(30.0)) + vec4(mp_copy_106 + mp_copy_107);
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}
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