LayoutTests/fast/canvas/webgl/tex-image-and-sub-image-2d-with-array-buffer-view.html - WebKit - Git at Google

 <html>
 <head>
 <script src="../../../resources/js-test.js"></script>
 <script src="resources/webgl-test.js"></script>
 <script src="resources/webgl-test-utils.js"></script>
 </head>
 <body>
 <canvas id="example" width="1px" height="2px"></canvas>
 <div id="description"></div>
 <div id="console"></div>
 <script>
 description('Verifies texImage2D and texSubImage2D code paths taking ArrayBufferView');

 var wtu = WebGLTestUtils;
 var gl = null;
 var textureLoc = null;

 // These two declarations need to be global for "shouldBe" to see them
 var buf = null;
 var idx = 0;
 var pixel = [0, 0, 0, 1];
 var correctColor = null;

 function generateRGBAData(type, unpackAlignment)
 {
     var sourceData = [ 255,   0,   0, 255,
                        0,   255,   0,   0 ];
     switch (type) {
     case gl.UNSIGNED_BYTE: {
         var rowWidth = Math.max(unpackAlignment, 4);
         var data = new Uint8Array(2 * rowWidth);
         for (var y = 0; y < 2; ++y) {
             var index = y * rowWidth;
             for (var element = 0; element < 4; ++element) {
                 data[index + element] = sourceData[4 * y + element];
             }
         }
         return data;
     }
     case gl.UNSIGNED_SHORT_4_4_4_4: {
         var rowWidth = Math.max(unpackAlignment, 2) / 2;
         var data = new Uint16Array(2 * rowWidth);
         for (var y = 0; y < 2; ++y) {
             var index = y * rowWidth;
             data[index] = (((sourceData[4 * y] & 0xF0) << 8)
                            | ((sourceData[4 * y + 1] & 0xF0) << 4)
                            | (sourceData[4 * y + 2] & 0xF0)
                            | (sourceData[4 * y + 3] >> 4));
         }
         return data;
     }
     case gl.UNSIGNED_SHORT_5_5_5_1: {
         var rowWidth = Math.max(unpackAlignment, 2) / 2;
         var data = new Uint16Array(2 * rowWidth);
         for (var y = 0; y < 2; ++y) {
             var index = y * rowWidth;
             data[index] = (((sourceData[4 * y] & 0xF8) << 8)
                            | ((sourceData[4 * y + 1] & 0xF8) << 3)
                            | ((sourceData[4 * y + 2] & 0xF8) >> 2)
                            | (sourceData[4 * y + 3] >> 7));
         }
         return data;
     }
     }
 }

 function typeToString(type)
 {
     switch (type) {
     case gl.UNSIGNED_BYTE:  return 'UNSIGNED_BYTE';
     case gl.UNSIGNED_SHORT_5_5_5_1:  return 'UNSIGNED_SHORT_5_5_5_1';
     case gl.UNSIGNED_SHORT_4_4_4_4:  return 'UNSIGNED_SHORT_4_4_4_4';
     }
     return 'Unknown type ' + type;
 }

 function runOneIteration(useTexSubImage2D, type, unpackAlignment, flipY, premultiplyAlpha, topColor, bottomColor)
 {
     debug('Testing ' + (useTexSubImage2D ? 'texSubImage2D' : 'texImage2D') +
           ' with type=' + typeToString(type) +
           ', unpackAlignment=' + unpackAlignment +
           ', flipY=' + flipY + ', premultiplyAlpha=' + premultiplyAlpha);
     gl.colorMask(true, true, true, true);
     gl.clearColor(0, 0, 0, 1.0);
     gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
     // Enable writes to the RGB channels
     gl.colorMask(true, true, true, false);
     var texture = gl.createTexture();
     // Bind the texture to texture unit 0
     gl.bindTexture(gl.TEXTURE_2D, texture);
     // Set up texture parameters
     gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST);
     gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST);
     // Set up pixel store parameters
     gl.pixelStorei(gl.UNPACK_ALIGNMENT, unpackAlignment);
     gl.pixelStorei(gl.UNPACK_FLIP_Y_WEBGL, flipY);
     gl.pixelStorei(gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, premultiplyAlpha);
     // Generate the data
     var data = generateRGBAData(type, unpackAlignment);
     if (gl.getError() != gl.NO_ERROR)
         testFailed("GL error before texture upload");
     // Upload the image into the texture
     if (useTexSubImage2D) {
         // Initialize the texture to black first
         gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, 1, 2, 0,
                       gl.RGBA, type, null);
         if (gl.getError() != gl.NO_ERROR)
             testFailed("GL error after texImage2D(null)");
         gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, 1, 2, gl.RGBA, type, data);
         if (gl.getError() != gl.NO_ERROR)
             testFailed("GL error after texSubImage2D");
     } else {
         gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, 1, 2, 0, gl.RGBA, type, data);
         if (gl.getError() != gl.NO_ERROR)
             testFailed("GL error after texImage2D");
     }

     // Point the uniform sampler to texture unit 0
     gl.uniform1i(textureLoc, 0);
     // Draw the triangles
     wtu.drawQuad(gl, [0, 0, 0, 255]);

     // Read back the rendering results
     buf = new Uint8Array(1 * 2 * 4);
     gl.readPixels(0, 0, 1, 2, gl.RGBA, gl.UNSIGNED_BYTE, buf);
     // Check the top pixel and bottom pixel and make sure they have
     // the right color.
     debug("Checking bottom pixel");
     wtu.checkCanvasRect(gl, 0, 0, 1, 1, bottomColor, "shouldBe " + bottomColor);
     debug("Checking top pixel");
     wtu.checkCanvasRect(gl, 0, 1, 1, 1, topColor, "shouldBe " + topColor);
 }

 function runTest()
 {
     var red = [255, 0, 0, 255];
     var green = [0, 255, 0, 255];
     var redPremultiplyAlpha = [255, 0, 0, 255];
     var greenPremultiplyAlpha = [0, 0, 0, 255];

     var types = [ gl.UNSIGNED_BYTE, gl.UNSIGNED_SHORT_5_5_5_1, gl.UNSIGNED_SHORT_4_4_4_4 ];
     var unpackAlignments = [ 1, 2, 4, 8 ];

     for (var i = 0; i < types.length; ++i) {
         var type = types[i];
         for (var j = 0; j < unpackAlignments.length; ++j) {
             var unpackAlignment = unpackAlignments[j];
             runOneIteration(false, type, unpackAlignment, true, false,
                             red, green);
             runOneIteration(false, type, unpackAlignment, false, false,
                             green, red);
             runOneIteration(false, type, unpackAlignment, true, true,
                             redPremultiplyAlpha, greenPremultiplyAlpha);
             runOneIteration(false, type, unpackAlignment, false, true,
                             greenPremultiplyAlpha, redPremultiplyAlpha);
             runOneIteration(true, type, unpackAlignment, true, false,
                             red, green);
             runOneIteration(true, type, unpackAlignment, false, false,
                             green, red);
             runOneIteration(true, type, unpackAlignment, true, true,
                             redPremultiplyAlpha, greenPremultiplyAlpha);
             runOneIteration(true, type, unpackAlignment, false, true,
                             greenPremultiplyAlpha, redPremultiplyAlpha);
         }
     }

 }

 var canvas = document.getElementById("example");
 gl = wtu.create3DContext(canvas);
 var program = wtu.setupTexturedQuad(gl);
 gl.disable(gl.BLEND);

 gl.clearColor(0,0,0,1);
 gl.clearDepth(1);

 textureLoc = gl.getUniformLocation(program, "tex");

 runTest();
 </script>
 </body>
 </html>
	<html>
	<head>
	<script src="../../../resources/js-test.js"></script>
	<script src="resources/webgl-test.js"></script>
	<script src="resources/webgl-test-utils.js"></script>
	</head>
	<body>
	<canvas id="example" width="1px" height="2px"></canvas>
	<div id="description"></div>
	<div id="console"></div>
	<script>
	description('Verifies texImage2D and texSubImage2D code paths taking ArrayBufferView');

	var wtu = WebGLTestUtils;
	var gl = null;
	var textureLoc = null;

	// These two declarations need to be global for "shouldBe" to see them
	var buf = null;
	var idx = 0;
	var pixel = [0, 0, 0, 1];
	var correctColor = null;

	function generateRGBAData(type, unpackAlignment)
	{
	var sourceData = [ 255, 0, 0, 255,
	0, 255, 0, 0 ];
	switch (type) {
	case gl.UNSIGNED_BYTE: {
	var rowWidth = Math.max(unpackAlignment, 4);
	var data = new Uint8Array(2 * rowWidth);
	for (var y = 0; y < 2; ++y) {
	var index = y * rowWidth;
	for (var element = 0; element < 4; ++element) {
	data[index + element] = sourceData[4 * y + element];
	}
	}
	return data;
	}
	case gl.UNSIGNED_SHORT_4_4_4_4: {
	var rowWidth = Math.max(unpackAlignment, 2) / 2;
	var data = new Uint16Array(2 * rowWidth);
	for (var y = 0; y < 2; ++y) {
	var index = y * rowWidth;
	data[index] = (((sourceData[4 * y] & 0xF0) << 8)
	\| ((sourceData[4 * y + 1] & 0xF0) << 4)
	\| (sourceData[4 * y + 2] & 0xF0)
	\| (sourceData[4 * y + 3] >> 4));
	}
	return data;
	}
	case gl.UNSIGNED_SHORT_5_5_5_1: {
	var rowWidth = Math.max(unpackAlignment, 2) / 2;
	var data = new Uint16Array(2 * rowWidth);
	for (var y = 0; y < 2; ++y) {
	var index = y * rowWidth;
	data[index] = (((sourceData[4 * y] & 0xF8) << 8)
	\| ((sourceData[4 * y + 1] & 0xF8) << 3)
	\| ((sourceData[4 * y + 2] & 0xF8) >> 2)
	\| (sourceData[4 * y + 3] >> 7));
	}
	return data;
	}
	}
	}

	function typeToString(type)
	{
	switch (type) {
	case gl.UNSIGNED_BYTE: return 'UNSIGNED_BYTE';
	case gl.UNSIGNED_SHORT_5_5_5_1: return 'UNSIGNED_SHORT_5_5_5_1';
	case gl.UNSIGNED_SHORT_4_4_4_4: return 'UNSIGNED_SHORT_4_4_4_4';
	}
	return 'Unknown type ' + type;
	}

	function runOneIteration(useTexSubImage2D, type, unpackAlignment, flipY, premultiplyAlpha, topColor, bottomColor)
	{
	debug('Testing ' + (useTexSubImage2D ? 'texSubImage2D' : 'texImage2D') +
	' with type=' + typeToString(type) +
	', unpackAlignment=' + unpackAlignment +
	', flipY=' + flipY + ', premultiplyAlpha=' + premultiplyAlpha);
	gl.colorMask(true, true, true, true);
	gl.clearColor(0, 0, 0, 1.0);
	gl.clear(gl.COLOR_BUFFER_BIT \| gl.DEPTH_BUFFER_BIT);
	// Enable writes to the RGB channels
	gl.colorMask(true, true, true, false);
	var texture = gl.createTexture();
	// Bind the texture to texture unit 0
	gl.bindTexture(gl.TEXTURE_2D, texture);
	// Set up texture parameters
	gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST);
	gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST);
	// Set up pixel store parameters
	gl.pixelStorei(gl.UNPACK_ALIGNMENT, unpackAlignment);
	gl.pixelStorei(gl.UNPACK_FLIP_Y_WEBGL, flipY);
	gl.pixelStorei(gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, premultiplyAlpha);
	// Generate the data
	var data = generateRGBAData(type, unpackAlignment);
	if (gl.getError() != gl.NO_ERROR)
	testFailed("GL error before texture upload");
	// Upload the image into the texture
	if (useTexSubImage2D) {
	// Initialize the texture to black first
	gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, 1, 2, 0,
	gl.RGBA, type, null);
	if (gl.getError() != gl.NO_ERROR)
	testFailed("GL error after texImage2D(null)");
	gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, 1, 2, gl.RGBA, type, data);
	if (gl.getError() != gl.NO_ERROR)
	testFailed("GL error after texSubImage2D");
	} else {
	gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, 1, 2, 0, gl.RGBA, type, data);
	if (gl.getError() != gl.NO_ERROR)
	testFailed("GL error after texImage2D");
	}

	// Point the uniform sampler to texture unit 0
	gl.uniform1i(textureLoc, 0);
	// Draw the triangles
	wtu.drawQuad(gl, [0, 0, 0, 255]);

	// Read back the rendering results
	buf = new Uint8Array(1 * 2 * 4);
	gl.readPixels(0, 0, 1, 2, gl.RGBA, gl.UNSIGNED_BYTE, buf);
	// Check the top pixel and bottom pixel and make sure they have
	// the right color.
	debug("Checking bottom pixel");
	wtu.checkCanvasRect(gl, 0, 0, 1, 1, bottomColor, "shouldBe " + bottomColor);
	debug("Checking top pixel");
	wtu.checkCanvasRect(gl, 0, 1, 1, 1, topColor, "shouldBe " + topColor);
	}

	function runTest()
	{
	var red = [255, 0, 0, 255];
	var green = [0, 255, 0, 255];
	var redPremultiplyAlpha = [255, 0, 0, 255];
	var greenPremultiplyAlpha = [0, 0, 0, 255];

	var types = [ gl.UNSIGNED_BYTE, gl.UNSIGNED_SHORT_5_5_5_1, gl.UNSIGNED_SHORT_4_4_4_4 ];
	var unpackAlignments = [ 1, 2, 4, 8 ];

	for (var i = 0; i < types.length; ++i) {
	var type = types[i];
	for (var j = 0; j < unpackAlignments.length; ++j) {
	var unpackAlignment = unpackAlignments[j];
	runOneIteration(false, type, unpackAlignment, true, false,
	red, green);
	runOneIteration(false, type, unpackAlignment, false, false,
	green, red);
	runOneIteration(false, type, unpackAlignment, true, true,
	redPremultiplyAlpha, greenPremultiplyAlpha);
	runOneIteration(false, type, unpackAlignment, false, true,
	greenPremultiplyAlpha, redPremultiplyAlpha);
	runOneIteration(true, type, unpackAlignment, true, false,
	red, green);
	runOneIteration(true, type, unpackAlignment, false, false,
	green, red);
	runOneIteration(true, type, unpackAlignment, true, true,
	redPremultiplyAlpha, greenPremultiplyAlpha);
	runOneIteration(true, type, unpackAlignment, false, true,
	greenPremultiplyAlpha, redPremultiplyAlpha);
	}
	}

	}

	var canvas = document.getElementById("example");
	gl = wtu.create3DContext(canvas);
	var program = wtu.setupTexturedQuad(gl);
	gl.disable(gl.BLEND);

	gl.clearColor(0,0,0,1);
	gl.clearDepth(1);

	textureLoc = gl.getUniformLocation(program, "tex");

	runTest();
	</script>
	</body>
	</html>