sdk/tests/conformance2/extensions/ext-float-blend.html

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<title>WebGL EXT_float_blend Conformance Tests</title>
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<script>
"use strict";
description("This test verifies the functionality of the EXT_float_blend extension, if it is available.");

var wtu = WebGLTestUtils;
var canvas = document.getElementById("canvas");
var gl = wtu.create3DContext(canvas);
var ext = null;

(function(){
    const colorBufferFloat = gl.getExtension("EXT_color_buffer_float");
    if (!colorBufferFloat) {
        testPassed("EXT_color_buffer_float is allowed to be missing.");
        return;
    }

    let shouldBlend = testExtFloatBlendFunctionality();
    debug( shouldBlend ?
        "This device has float 32 blending capability" :
        "This device cannot do float 32 blending"
        );
    const hasExtFloatBlend = gl.getSupportedExtensions().indexOf('EXT_float_blend') != -1;
    debug( hasExtFloatBlend ?
        "This device has EXT_float_blend listed" :
        "This device doesn't have EXT_float_blend listed"
        );
    shouldBlend = shouldBlend || hasExtFloatBlend;

    debug("");
    debug("Testing float32 blending without EXT_float_blend");
    testExtFloatBlend(gl.RGBA32F, shouldBlend);
    testExtFloatBlendMRT(shouldBlend);
    testExtFloatBlendNonFloat32Type(shouldBlend);

    const floatBlend = gl.getExtension("EXT_float_blend");
    if (!floatBlend && !shouldBlend) {
        testPassed("EXT_float_blend is allowed to be missing.");
        return;
    }

    debug("");
    debug("Testing that float32 blending is allowed with EXT_float_blend");
    testExtFloatBlend(gl.RGBA32F, shouldBlend);
    testExtFloatBlendMRT(shouldBlend);
    testExtFloatBlendNonFloat32Type(shouldBlend);
})();

debug("");
var successfullyParsed = true;
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