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Use highp when necessary in shader-precision-format. #3743

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Merged
kenrussell merged 1 commit into from
Oct 8, 2025
Merged

Use highp when necessary in shader-precision-format. #3743

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5 changes: 4 additions & 1 deletion sdk/tests/conformance/misc/shader-precision-format.html
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Original file line number Diff line number Diff line change
Expand Up @@ -223,6 +223,9 @@
testRenderPrecision(gl, shaderType, 'int', precision, expected, msg);
}

// Only use highp in the fragment shader if caller has determined it's supported.
const uniformPrecision = (precision == 'highp' ? 'highp' : 'mediump');

{
const vs = `
attribute vec4 position;
Expand Down Expand Up @@ -261,7 +264,7 @@
const fs = `
precision ${precision} float;
uniform ${precision} int v;
uniform mediump float f;
uniform ${uniformPrecision} float f;

void main() {
mediump float diff = abs(float(v) - f);
Expand Down