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Unified Diff: third_party/WebKit/LayoutTests/fast/canvas/webgl/drawingbuffer-test.html

Issue 1601093008: Remove duplicated WebGL layout tests. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Created 4 years, 11 months ago
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Index: third_party/WebKit/LayoutTests/fast/canvas/webgl/drawingbuffer-test.html
diff --git a/third_party/WebKit/LayoutTests/fast/canvas/webgl/drawingbuffer-test.html b/third_party/WebKit/LayoutTests/fast/canvas/webgl/drawingbuffer-test.html
deleted file mode 100644
index 56c96fa34671b9eb72cfaea35beec155d2e7546e..0000000000000000000000000000000000000000
--- a/third_party/WebKit/LayoutTests/fast/canvas/webgl/drawingbuffer-test.html
+++ /dev/null
@@ -1,219 +0,0 @@
-<!DOCTYPE html>
-<html>
-<head>
-<meta charset="utf-8">
-<title>WebGL Canvas Conformance Tests</title>
-<script src="../../../resources/js-test.js"></script>
-<script src="resources/webgl-test.js"></script>
-<script src="resources/webgl-test-utils.js"></script>
-</head>
-<body>
-<div id="description"></div>
-<div id="console"></div>
-<script id="vshaderGrid" type="x-shader/x-vertex">
-attribute vec4 a_position;
-void main()
-{
- gl_Position = a_position;
-}
-</script>
-
-<script id="fshaderGrid" type="x-shader/x-fragment">
-precision mediump float;
-void main()
-{
- float r = mod(gl_FragCoord.x, 2.0) < 1.0 ? 0.0 : 1.0;
- float g = mod(gl_FragCoord.y, 2.0) < 1.0 ? 0.0 : 1.0;
- gl_FragColor = vec4(r, g, 0, 1);
-}
-</script>
-<script>
-description("This test ensures WebGL implementations correctly implement drawingbufferWidth/Height.");
-
-function getMaxViewportDimensions() {
- // create a fresh canvas. This canvas will be discarded
- // after exiting this function.
- var canvas = document.createElement("canvas");
- gl = wtu.create3DContext(canvas, {antialias: false});
- if (!gl) {
- testFailed("context does not exist");
- return [0, 0];
- } else {
- testPassed("context exists");
-
- // For a default size canvas these should be equal.
- // WebGL contexts are not allowed to change the size of the drawingBuffer
- // for things like hi-res displays.
- shouldBe('gl.drawingBufferWidth', 'gl.canvas.width');
- shouldBe('gl.drawingBufferHeight', 'gl.canvas.height');
- return gl.getParameter(gl.MAX_VIEWPORT_DIMS);
- }
-}
-
-// This uses gl_FragCoord to draw a device pixel relavent pattern.
-// If drawBufferWidth or drawBufferHeight are not in device pixels
-// this test should fail.
-function checkGrid(gl) {
- var program = wtu.setupProgram(gl, ["vshaderGrid", "fshaderGrid"], ["a_position"]);
- wtu.setupUnitQuad(gl);
- gl.useProgram(program);
- shouldBe('gl.getError()', 'gl.NO_ERROR');
-
- wtu.drawQuad(gl);
-
- var pixels = new Uint8Array(gl.drawingBufferWidth * gl.drawingBufferHeight * 4);
- gl.readPixels(0, 0, gl.drawingBufferWidth, gl.drawingBufferHeight, gl.RGBA, gl.UNSIGNED_BYTE, pixels);
-
- var colors = [
- [ { color: [0, 0, 0, 255], name: "black" }, { color: [255, 0, 0, 255], name: "red" } ],
- [ { color: [0, 255, 0, 255], name: "green" }, { color: [255, 255, 0, 255], name: "yellow" } ],
- ];
-
- for (var yy = 0; yy < gl.drawingBufferHeight; ++yy) {
- for (var xx = 0; xx < gl.drawingBufferWidth; ++xx) {
- var info = colors[yy % 2][xx % 2];
- var color = info.color;
- var offset = (yy * gl.drawingBufferWidth + xx) * 4;
- for (var jj = 0; jj < 4; ++jj) {
- if (pixels[offset + jj] != color[jj]) {
- var actual = [pixels[offset], pixels[offset + 1], pixels[offset + 2], pixels[offset + 3]];
- testFailed("at " + xx + ", " + yy + " expected " + color + "(" + info.name + ") was " + actual);
- return;
- }
- }
- }
- }
- testPassed("grid rendered correctly");
-}
-
-// This passes device coordinate vertices in to make sure gl.viewport is not being mucked with.
-function checkQuad(gl) {
- var deviceToClipSpace = function(value, range) {
- return value / range * 2 - 1;
- }
-
- var program = wtu.setupColorQuad(gl);
-
- // draw a small green square in the top right corner.
- var deviceX1 = gl.drawingBufferWidth - 4;
- var deviceX2 = gl.drawingBufferWidth;
- var deviceY1 = gl.drawingBufferHeight - 4;
- var deviceY2 = gl.drawingBufferHeight;
-
- var clipX1 = deviceToClipSpace(deviceX1, gl.drawingBufferWidth);
- var clipX2 = deviceToClipSpace(deviceX2, gl.drawingBufferWidth);
- var clipY1 = deviceToClipSpace(deviceY1, gl.drawingBufferHeight);
- var clipY2 = deviceToClipSpace(deviceY2, gl.drawingBufferHeight);
-
- var vertexObject = gl.createBuffer();
- gl.bindBuffer(gl.ARRAY_BUFFER, vertexObject);
- gl.bufferData(
- gl.ARRAY_BUFFER,
- new Float32Array(
- [ clipX2, clipY2,
- clipX1, clipY2,
- clipX1, clipY1,
- clipX2, clipY2,
- clipX1, clipY1,
- clipX2, clipY1]),
- gl.STATIC_DRAW);
- gl.enableVertexAttribArray(0);
- gl.vertexAttribPointer(0, 2, gl.FLOAT, false, 0, 0);
-
- var green = [0, 255, 0, 255];
- var black = [0, 0, 0, 0];
- gl.clearColor(0, 0, 0, 0);
- gl.clear(gl.COLOR_BUFFER_BIT);
- wtu.drawUByteColorQuad(gl, [0, 255, 0, 255]);
-
- var squareWidth = deviceX2 - deviceX1;
- var squareHeight = deviceY2 - deviceY1;
-
- // check the square.
- wtu.checkCanvasRect(gl, deviceX1, deviceY1, squareWidth, squareHeight, green, "should be green");
- // check outside the square.
- wtu.checkCanvasRect(gl, 0, 0, gl.drawingBufferWidth, gl.drawingBufferHeight - squareHeight, black, "should be black");
- wtu.checkCanvasRect(gl, 0, gl.drawingBufferHeight - squareHeight, gl.drawingBufferWidth - squareWidth, squareHeight, black, "should be black");
-}
-
-
-function test(desiredWidth, desiredHeight) {
- debug("");
- debug("Checking drawingBufferWidth/drawingBufferHeight");
-
- // Make a fresh canvas.
- var canvas = document.createElement("canvas");
- canvas.width = desiredWidth;
- canvas.height = desiredHeight;
-
- // This 'gl' must be global for shouldBe to work.
- gl = wtu.create3DContext(canvas, {antialias: false});
- if (!gl) {
- testFailed("context does not exist");
- } else {
- testPassed("context exists");
-
- // Verify these stats didn't change since they come from a different
- // context.
- shouldBe('gl.getParameter(gl.MAX_VIEWPORT_DIMS)[0]', 'maxSize[0]');
- shouldBe('gl.getParameter(gl.MAX_VIEWPORT_DIMS)[1]', 'maxSize[1]');
-
- // check the initial viewport matches the drawingBufferWidth and drawingBufferHeight
- shouldBe('gl.getParameter(gl.VIEWPORT)[0]', '0');
- shouldBe('gl.getParameter(gl.VIEWPORT)[1]', '0');
- shouldBe('gl.getParameter(gl.VIEWPORT)[2]', 'gl.drawingBufferWidth');
- shouldBe('gl.getParameter(gl.VIEWPORT)[3]', 'gl.drawingBufferHeight');
-
- // Draw a pixel grid using a shader that draws in device coordinates
- checkGrid(gl);
- // Draw a quad in the top right corner.
- checkQuad(gl);
-
- shouldBe('gl.getError()', 'gl.NO_ERROR');
-
- debug("");
- debug("Testing resizing canvas");
-
- oldViewport = gl.getParameter(gl.VIEWPORT);
-
- // flip width and height
- canvas.width = desiredHeight;
- canvas.height = desiredWidth;
-
- // Verify the viewport didn't change.
- shouldBe('gl.getParameter(gl.VIEWPORT)[0]', 'oldViewport[0]');
- shouldBe('gl.getParameter(gl.VIEWPORT)[1]', 'oldViewport[1]');
- shouldBe('gl.getParameter(gl.VIEWPORT)[2]', 'oldViewport[2]');
- shouldBe('gl.getParameter(gl.VIEWPORT)[3]', 'oldViewport[3]');
-
- // fix the viewport
- gl.viewport(0, 0, gl.drawingBufferWidth, gl.drawingBufferHeight);
-
- // Draw a pixel grid using a shader that draws in device coordinates
- checkGrid(gl);
-
- // Draw a quad in the top right corner.
- checkQuad(gl);
- shouldBe('gl.getError()', 'gl.NO_ERROR');
- }
-}
-
-var wtu = WebGLTestUtils;
-var maxSize = getMaxViewportDimensions();
-
-shouldBeTrue('maxSize[0] > 0');
-shouldBeTrue('maxSize[1] > 0');
-
-// test a small size to make sure it works at all.
-test(16, 32);
-
-// Make a canvas slightly larger than the max size WebGL can handle.
-// From section 2.2 of the spec the WebGL implementation should allow this to work.
-
-// test a size larger than MAX_VIEWPORT_DIMS in both dimensions
-test(maxSize[0] + 32, 8);
-
-debug("")
-</script>
-</body>
-</html>
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