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/* Any copyright is dedicated to the Public Domain.
http://creativecommons.org/publicdomain/zero/1.0/ */
/**
* Tests that vertex and fragment shader sources can be changed.
*/
function* ifWebGLSupported() {
let { target, front } = yield initBackend(SIMPLE_CANVAS_URL);
front.setup({ reload: true });
let programActor = yield once(front, "program-linked");
let vertexShader = yield programActor.getVertexShader();
let fragmentShader = yield programActor.getFragmentShader();
yield ensurePixelIs(front, { x: 0, y: 0 }, { r: 255, g: 0, b: 0, a: 255 }, true);
yield ensurePixelIs(front, { x: 128, y: 128 }, { r: 191, g: 64, b: 0, a: 255 }, true);
yield ensurePixelIs(front, { x: 511, y: 511 }, { r: 0, g: 255, b: 0, a: 255 }, true);
let vertSource = yield vertexShader.getText();
let fragSource = yield fragmentShader.getText();
ok(!vertSource.includes("2.0"),
"The vertex shader source is correct before changing it.");
ok(!fragSource.includes("0.5"),
"The fragment shader source is correct before changing it.");
let newVertSource = vertSource.replace("1.0", "2.0");
let status = yield vertexShader.compile(newVertSource);
ok(!status,
"The new vertex shader source was compiled without errors.");
yield ensurePixelIs(front, { x: 0, y: 0 }, { r: 0, g: 0, b: 0, a: 255 }, true);
yield ensurePixelIs(front, { x: 128, y: 128 }, { r: 255, g: 0, b: 0, a: 255 }, true);
yield ensurePixelIs(front, { x: 511, y: 511 }, { r: 0, g: 0, b: 0, a: 255 }, true);
vertSource = yield vertexShader.getText();
fragSource = yield fragmentShader.getText();
ok(vertSource.includes("2.0"),
"The vertex shader source is correct after changing it.");
ok(!fragSource.includes("0.5"),
"The fragment shader source is correct after changing the vertex shader.");
let newFragSource = fragSource.replace("1.0", "0.5");
status = yield fragmentShader.compile(newFragSource);
ok(!status,
"The new fragment shader source was compiled without errors.");
yield ensurePixelIs(front, { x: 0, y: 0 }, { r: 0, g: 0, b: 0, a: 255 }, true);
yield ensurePixelIs(front, { x: 128, y: 128 }, { r: 255, g: 0, b: 0, a: 127 }, true);
yield ensurePixelIs(front, { x: 511, y: 511 }, { r: 0, g: 0, b: 0, a: 255 }, true);
vertSource = yield vertexShader.getText();
fragSource = yield fragmentShader.getText();
ok(vertSource.includes("2.0"),
"The vertex shader source is correct after changing the fragment shader.");
ok(fragSource.includes("0.5"),
"The fragment shader source is correct after changing it.");
yield removeTab(target.tab);
finish();
}
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