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<!--
Copyright (c) 2023 The Khronos Group Inc.
Use of this source code is governed by an MIT-style license that can be
found in the LICENSE.txt file.
-->
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>WebGL WEBGL_stencil_texturing Conformance Tests</title>
<link rel="stylesheet" href="../../resources/js-test-style.css"/>
<script src="../../js/js-test-pre.js"></script>
<script src="../../js/webgl-test-utils.js"></script>
</head>
<body>
<div id="description"></div>
<div id="console"></div>
<script>
"use strict";
description("This test verifies the functionality of the WEBGL_stencil_texturing extension, if it is available.");
debug("");
var wtu = WebGLTestUtils;
var gl = wtu.create3DContext(null, null, 2);
var ext;
function runTestNoExtension() {
debug("");
debug("Check the texture parameter without the extension");
const tex = gl.createTexture();
gl.bindTexture(gl.TEXTURE_2D, tex);
shouldBeNull("gl.getTexParameter(gl.TEXTURE_2D, 0x90EA /* DEPTH_STENCIL_TEXTURE_MODE_WEBGL */)");
wtu.glErrorShouldBe(gl, gl.INVALID_ENUM, "parameter unknown without enabling the extension");
wtu.glErrorShouldBe(gl, gl.NO_ERROR, "should be no more errors");
gl.texParameteri(gl.TEXTURE_2D, 0x90EA /* DEPTH_STENCIL_TEXTURE_MODE_WEBGL */, gl.DEPTH_COMPONENT);
wtu.glErrorShouldBe(gl, gl.INVALID_ENUM, "parameter unknown for texParameteri without enabling the extension");
wtu.glErrorShouldBe(gl, gl.NO_ERROR, "should be no more errors");
gl.texParameterf(gl.TEXTURE_2D, 0x90EA /* DEPTH_STENCIL_TEXTURE_MODE_WEBGL */, gl.DEPTH_COMPONENT);
wtu.glErrorShouldBe(gl, gl.INVALID_ENUM, "parameter unknown for texParameterf without enabling the extension");
wtu.glErrorShouldBe(gl, gl.NO_ERROR, "should be no more errors");
const sampler = gl.createSampler();
gl.samplerParameteri(sampler, 0x90EA /* DEPTH_STENCIL_TEXTURE_MODE_WEBGL */, gl.DEPTH_COMPONENT);
wtu.glErrorShouldBe(gl, gl.INVALID_ENUM, "parameter unknown for samplerParameteri");
wtu.glErrorShouldBe(gl, gl.NO_ERROR, "should be no more errors");
gl.samplerParameterf(sampler, 0x90EA /* DEPTH_STENCIL_TEXTURE_MODE_WEBGL */, gl.DEPTH_COMPONENT);
wtu.glErrorShouldBe(gl, gl.INVALID_ENUM, "parameter unknown for samplerParameterf");
wtu.glErrorShouldBe(gl, gl.NO_ERROR, "should be no more errors");
}
function checkEnums() {
debug("");
debug("Check enums");
shouldBe("ext.DEPTH_STENCIL_TEXTURE_MODE_WEBGL", "0x90EA");
shouldBe("ext.STENCIL_INDEX_WEBGL", "0x1901");
}
function checkQueries() {
const tex = gl.createTexture();
gl.bindTexture(gl.TEXTURE_2D, tex);
debug("");
debug("Check default texture state");
shouldBe('gl.getTexParameter(gl.TEXTURE_2D, ext.DEPTH_STENCIL_TEXTURE_MODE_WEBGL)', 'gl.DEPTH_COMPONENT');
debug("");
debug("Check texture state updates using texParameteri");
gl.texParameteri(gl.TEXTURE_2D, ext.DEPTH_STENCIL_TEXTURE_MODE_WEBGL, ext.STENCIL_INDEX_WEBGL);
wtu.glErrorShouldBe(gl, gl.NO_ERROR, "should be no errors");
shouldBe('gl.getTexParameter(gl.TEXTURE_2D, ext.DEPTH_STENCIL_TEXTURE_MODE_WEBGL)', 'ext.STENCIL_INDEX_WEBGL');
gl.texParameteri(gl.TEXTURE_2D, ext.DEPTH_STENCIL_TEXTURE_MODE_WEBGL, gl.DEPTH_COMPONENT);
wtu.glErrorShouldBe(gl, gl.NO_ERROR, "should be no errors");
shouldBe('gl.getTexParameter(gl.TEXTURE_2D, ext.DEPTH_STENCIL_TEXTURE_MODE_WEBGL)', 'gl.DEPTH_COMPONENT');
gl.texParameteri(gl.TEXTURE_2D, ext.DEPTH_STENCIL_TEXTURE_MODE_WEBGL, 0);
wtu.glErrorShouldBe(gl, gl.INVALID_ENUM, "invalid depth stencil mode value rejected by texParameteri");
shouldBe('gl.getTexParameter(gl.TEXTURE_2D, ext.DEPTH_STENCIL_TEXTURE_MODE_WEBGL)', 'gl.DEPTH_COMPONENT');
debug("");
debug("Check texture state updates using texParameterf");
gl.texParameterf(gl.TEXTURE_2D, ext.DEPTH_STENCIL_TEXTURE_MODE_WEBGL, ext.STENCIL_INDEX_WEBGL);
wtu.glErrorShouldBe(gl, gl.NO_ERROR, "should be no errors");
shouldBe('gl.getTexParameter(gl.TEXTURE_2D, ext.DEPTH_STENCIL_TEXTURE_MODE_WEBGL)', 'ext.STENCIL_INDEX_WEBGL');
gl.texParameterf(gl.TEXTURE_2D, ext.DEPTH_STENCIL_TEXTURE_MODE_WEBGL, gl.DEPTH_COMPONENT);
wtu.glErrorShouldBe(gl, gl.NO_ERROR, "should be no errors");
shouldBe('gl.getTexParameter(gl.TEXTURE_2D, ext.DEPTH_STENCIL_TEXTURE_MODE_WEBGL)', 'gl.DEPTH_COMPONENT');
gl.texParameterf(gl.TEXTURE_2D, ext.DEPTH_STENCIL_TEXTURE_MODE_WEBGL, 0);
wtu.glErrorShouldBe(gl, gl.INVALID_ENUM, "invalid depth stencil mode value rejected by texParameterf");
shouldBe('gl.getTexParameter(gl.TEXTURE_2D, ext.DEPTH_STENCIL_TEXTURE_MODE_WEBGL)', 'gl.DEPTH_COMPONENT');
debug("");
debug("Check that depth stencil texture mode is not accepted as a sampler state");
const sampler = gl.createSampler();
gl.samplerParameteri(sampler, ext.DEPTH_STENCIL_TEXTURE_MODE_WEBGL, gl.DEPTH_COMPONENT);
wtu.glErrorShouldBe(gl, gl.INVALID_ENUM, "parameter unknown for samplerParameteri");
wtu.glErrorShouldBe(gl, gl.NO_ERROR, "should be no more errors");
gl.samplerParameterf(sampler, ext.DEPTH_STENCIL_TEXTURE_MODE_WEBGL, gl.DEPTH_COMPONENT);
wtu.glErrorShouldBe(gl, gl.INVALID_ENUM, "parameter unknown for samplerParameterf");
wtu.glErrorShouldBe(gl, gl.NO_ERROR, "should be no more errors");
}
function checkSampling() {
const formats = [
{name: "DEPTH_COMPONENT16", internalFormat: gl.DEPTH_COMPONENT16,
format: gl.DEPTH_COMPONENT, type: gl.UNSIGNED_SHORT},
{name: "DEPTH_COMPONENT24", internalFormat: gl.DEPTH_COMPONENT24,
format: gl.DEPTH_COMPONENT, type: gl.UNSIGNED_INT},
{name: "DEPTH_COMPONENT32F", internalFormat: gl.DEPTH_COMPONENT32F,
format: gl.DEPTH_COMPONENT, type: gl.FLOAT},
{name: "DEPTH24_STENCIL8", internalFormat: gl.DEPTH24_STENCIL8,
format: gl.DEPTH_STENCIL, type: gl.UNSIGNED_INT_24_8},
{name: "DEPTH32F_STENCIL8", internalFormat: gl.DEPTH32F_STENCIL8,
format: gl.DEPTH_STENCIL, type: gl.FLOAT_32_UNSIGNED_INT_24_8_REV}
];
gl.enable(gl.DEPTH_TEST);
gl.enable(gl.STENCIL_TEST);
gl.stencilFunc(gl.ALWAYS, 170, 0xFF);
gl.stencilOp(gl.REPLACE, gl.REPLACE, gl.REPLACE);
wtu.setupUnitQuad(gl);
const drawProgram = wtu.setupProgram(gl, [wtu.simpleVertexShader,
wtu.simpleColorFragmentShader]);
const readDepthProgram = wtu.setupProgram(gl, [wtu.simpleTextureVertexShaderESSL300,
wtu.simpleTextureFragmentShaderESSL300]);
const readStencilShader = `#version 300 es
precision highp float;
uniform highp usampler2D tex;
in vec2 texCoord;
out vec4 out_color;
void main() {
out_color = vec4(texture(tex, texCoord)) / 255.0;
}`;
const readStencilProgram = wtu.setupProgram(gl, [wtu.simpleTextureVertexShaderESSL300,
readStencilShader]);
for (const format of formats) {
debug("");
debug(`Testing depth stencil texture modes with ${format.name}`);
const fbo = gl.createFramebuffer();
gl.bindFramebuffer(gl.FRAMEBUFFER, fbo);
const rbo = gl.createRenderbuffer();
gl.bindRenderbuffer(gl.RENDERBUFFER, rbo);
gl.renderbufferStorage(gl.RENDERBUFFER, gl.RGBA8, 1, 1);
gl.framebufferRenderbuffer(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.RENDERBUFFER, rbo);
const tex = gl.createTexture();
gl.bindTexture(gl.TEXTURE_2D, tex);
gl.texImage2D(gl.TEXTURE_2D, 0, format.internalFormat, 1, 1, 0, format.format, format.type, null);
wtu.glErrorShouldBe(gl, gl.NO_ERROR, "texture created");
gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.DEPTH_ATTACHMENT, gl.TEXTURE_2D, tex, 0);
if (format.format == gl.DEPTH_STENCIL) {
gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.STENCIL_ATTACHMENT, gl.TEXTURE_2D, tex, 0);
}
wtu.framebufferStatusShouldBe(gl, gl.FRAMEBUFFER, gl.FRAMEBUFFER_COMPLETE);
gl.clear(gl.DEPTH_BUFFER_BIT | gl.STENCIL_BUFFER_BIT);
gl.useProgram(drawProgram);
wtu.drawUnitQuad(gl);
wtu.glErrorShouldBe(gl, gl.NO_ERROR, "no errors after drawing to the depth or depth stencil texture");
// Detach the depth or depth stencil texture to avoid feedback loop
gl.framebufferRenderbuffer(gl.FRAMEBUFFER, gl.DEPTH_STENCIL_ATTACHMENT, gl.RENDERBUFFER, null);
wtu.framebufferStatusShouldBe(gl, gl.FRAMEBUFFER, gl.FRAMEBUFFER_COMPLETE);
const magFilters = ['NEAREST', 'LINEAR'];
const minFilters = [
'NEAREST',
'LINEAR',
'NEAREST_MIPMAP_NEAREST',
'LINEAR_MIPMAP_NEAREST',
'NEAREST_MIPMAP_LINEAR',
'LINEAR_MIPMAP_LINEAR'
];
const modes = [
[gl.DEPTH_COMPONENT, 'DEPTH_COMPONENT'],
[ext.STENCIL_INDEX_WEBGL, 'STENCIL_INDEX_WEBGL']
];
const programs = [
[readDepthProgram, 'depth'],
[readStencilProgram, 'stencil']
];
function validFilters(magFilter, minFilter) {
return magFilter == gl.NEAREST &&
(minFilter == gl.NEAREST || minFilter == gl.NEAREST_MIPMAP_NEAREST);
}
for (const program of programs) {
gl.useProgram(program[0]);
for (const mode of modes) {
gl.texParameteri(gl.TEXTURE_2D, ext.DEPTH_STENCIL_TEXTURE_MODE_WEBGL, mode[0]);
for (const magFilter of magFilters) {
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl[magFilter]);
for (const minFilter of minFilters) {
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl[minFilter]);
debug(`Program: ${program[1]}, mode: ${mode[1]}, mag: ${magFilter}, min: ${minFilter}`);
gl.clear(gl.COLOR_BUFFER_BIT);
wtu.drawUnitQuad(gl);
if (format.format == gl.DEPTH_COMPONENT || mode[0] == gl.DEPTH_COMPONENT) {
if (program[1] == 'depth') {
wtu.glErrorShouldBe(gl, gl.NO_ERROR, "should be no errors");
if (validFilters(gl[magFilter], gl[minFilter])) {
wtu.checkCanvasRect(gl, 0, 0, 1, 1, [128, 0, 0, 255], "sampling depth from complete texture", 1);
} else {
wtu.checkCanvasRect(gl, 0, 0, 1, 1, [0, 0, 0, 255], "sampling depth from incomplete texture", 1);
}
} else {
wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "sampling depth using incompatible program");
}
} else {
if (program[1] == 'stencil') {
wtu.glErrorShouldBe(gl, gl.NO_ERROR, "should be no errors");
if (validFilters(gl[magFilter], gl[minFilter])) {
wtu.checkCanvasRect(gl, 0, 0, 1, 1, [170, 0, 0, 1], "sampling stencil from complete texture", 1);
} else {
// Incomplete textures may produce [0, 0, 0, 1] or [0, 0, 0, 255].
const value = new Uint8Array(4);
gl.readPixels(0, 0, 1, 1, gl.RGBA, gl.UNSIGNED_BYTE, value);
wtu.glErrorShouldBe(gl, gl.NO_ERROR);
const msg = "sampling stencil from incomplete texture";
if (value[0] == 0 && value[1] == 0 && value[2] == 0 && (value[3] == 1 || value[3] == 255)) {
testPassed(msg);
} else {
testFailed(`${msg}: ${value}`);
}
}
} else {
wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "sampling stencil using incompatible program");
}
}
}
}
}
}
}
}
function runTest() {
if (!gl) {
testFailed("context does not exist");
return;
}
testPassed("context exists");
runTestNoExtension();
ext = gl.getExtension("WEBGL_stencil_texturing");
wtu.runExtensionSupportedTest(gl, "WEBGL_stencil_texturing", ext !== null);
if (ext !== null) {
checkEnums();
checkQueries();
checkSampling();
} else {
testPassed("No WEBGL_stencil_texturing support -- this is legal");
}
}
runTest();
var successfullyParsed = true;
</script>
<script src="../../js/js-test-post.js"></script>
</body>
</html>
|
