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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 EXT_render_snorm 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 EXT_render_snorm extension, if it is available.");
debug("");
var wtu = WebGLTestUtils;
var gl = wtu.create3DContext(null, null, 2);
var ext;
function createTypedArray(type) {
switch (type) {
case gl.BYTE:
return new Int8Array(4);
case gl.UNSIGNED_BYTE:
return new Uint8Array(4);
case gl.SHORT:
return new Int16Array(4);
case gl.UNSIGNED_SHORT:
return new Uint16Array(4);
default:
return null;
}
}
function drawTest(config) {
wtu.drawUnitQuad(gl);
const implementationType = gl.getParameter(gl.IMPLEMENTATION_COLOR_READ_TYPE);
const implementationFormat = gl.getParameter(gl.IMPLEMENTATION_COLOR_READ_FORMAT);
// Support for reading signed data with unsigned read type is not required
// but implementations may allow such conversions. Do not expect the error
// when the type matches the buffer type or when it's explicitly supported.
for (const type of [gl.BYTE, gl.UNSIGNED_BYTE, gl.SHORT, gl.UNSIGNED_SHORT]) {
if (type == config.type) continue;
if (implementationFormat != gl.RGBA || implementationType != type) {
gl.readPixels(0, 0, 1, 1, gl.RGBA, type, createTypedArray(type));
wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "reading with unsupported type fails");
}
}
const defaultPixel = createTypedArray(config.type);
wtu.checkCanvasRect(gl, 0, 0, 1, 1, config.color,
"reading with the RGBA format and matching type", 1,
defaultPixel,
config.type, gl.RGBA);
if (implementationFormat == config.format && implementationType == config.type) {
const implementationPixel = createTypedArray(implementationType);
const color = [config.color[0]];
if (config.format != gl.RED) color.push(config.color[1]);
if (config.format == gl.RGBA) color.push(config.color[2], config.color[3]);
wtu.checkCanvasRect(gl, 0, 0, 1, 1, color,
"reading with the exact format/type", 1,
implementationPixel,
implementationType, implementationFormat);
}
}
function renderbufferTest(config, isSupported) {
debug("");
debug(`${config.name} renderbuffer: ` +
`${!isSupported || !config.color ? "NOT " : ""}supported`);
const rbo = gl.createRenderbuffer();
gl.bindRenderbuffer(gl.RENDERBUFFER, rbo);
gl.renderbufferStorage(gl.RENDERBUFFER, config.internalFormat, 1, 1);
if (!isSupported || !config.color) {
wtu.glErrorShouldBe(gl, gl.INVALID_ENUM, "renderbuffer allocation failed");
return;
}
wtu.glErrorShouldBe(gl, gl.NO_ERROR, "renderbuffer allocation succeeded");
const fbo = gl.createFramebuffer();
gl.bindFramebuffer(gl.FRAMEBUFFER, fbo);
gl.framebufferRenderbuffer(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.RENDERBUFFER, rbo);
wtu.framebufferStatusShouldBe(gl, gl.FRAMEBUFFER, gl.FRAMEBUFFER_COMPLETE);
drawTest(config);
}
function textureTest(config, isRenderable, isTexturable) {
debug("");
debug(`${config.name} texture: ` +
`${!isRenderable || !config.color ? "NOT " : ""}renderable, ` +
`${!isTexturable ? "NOT " : ""}texturable`);
const tex = gl.createTexture();
gl.bindTexture(gl.TEXTURE_2D, tex);
gl.texImage2D(gl.TEXTURE_2D, 0, config.internalFormat, 1, 1, 0, config.format, config.type, null);
if (!isTexturable) {
wtu.glErrorShouldBe(gl,
[gl.INVALID_ENUM, gl.INVALID_VALUE, gl.INVALID_OPERATION],
"texture allocation failed");
return;
}
wtu.glErrorShouldBe(gl, gl.NO_ERROR, "texture allocation succeeded");
const fbo = gl.createFramebuffer();
gl.bindFramebuffer(gl.FRAMEBUFFER, fbo);
gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, tex, 0);
if (!isRenderable || !config.color) {
wtu.framebufferStatusShouldBe(gl, gl.FRAMEBUFFER, gl.FRAMEBUFFER_INCOMPLETE_ATTACHMENT);
return;
}
wtu.framebufferStatusShouldBe(gl, gl.FRAMEBUFFER, gl.FRAMEBUFFER_COMPLETE);
drawTest(config);
}
function formatTest(isSnormEnabled, isNorm16Enabled) {
const program = wtu.setupProgram(gl, [wtu.simpleVertexShader,
wtu.simpleColorFragmentShader]);
gl.useProgram(program);
gl.uniform4f(gl.getUniformLocation(program, "u_color"), -0.0625, -0.125, -0.25, -0.5);
wtu.setupUnitQuad(gl);
const configs8 = [
{name: "R8_SNORM", format: gl.RED, type: gl.BYTE, internalFormat: gl.R8_SNORM, color: [-8, 0, 0, 127]},
{name: "RG8_SNORM", format: gl.RG, type: gl.BYTE, internalFormat: gl.RG8_SNORM, color: [-8, -16, 0, 127]},
{name: "RGB8_SNORM", format: gl.RGB, type: gl.BYTE, internalFormat: gl.RGB8_SNORM, color: null},
{name: "RGBA8_SNORM", format: gl.RGBA, type: gl.BYTE, internalFormat: gl.RGBA8_SNORM, color: [-8, -16, -32, -64]}
];
const configs16 = [
{name: "R16_SNORM", format: gl.RED, type: gl.SHORT, internalFormat: 0x8F98 /* R16_SNORM_EXT */, color: [-2048, 0, 0, 32767]},
{name: "RG16_SNORM", format: gl.RG, type: gl.SHORT, internalFormat: 0x8F99 /* RG16_SNORM_EXT */, color: [-2048, -4096, 0, 32767]},
{name: "RGB16_SNORM", format: gl.RGB, type: gl.SHORT, internalFormat: 0x8F9A /* RGB16_SNORM_EXT */, color: null},
{name: "RGBA16_SNORM", format: gl.RGBA, type: gl.SHORT, internalFormat: 0x8F9B /* RGBA16_SNORM_EXT */, color: [-2048, -4096, -8192, -16384]}
];
for (const config of configs8) {
renderbufferTest(config, isSnormEnabled);
textureTest(config, isSnormEnabled, true);
}
for (const config of configs16) {
renderbufferTest(config, isSnormEnabled && isNorm16Enabled);
textureTest(config, isSnormEnabled && isNorm16Enabled, isNorm16Enabled);
}
}
function runTest() {
if (!gl) {
testFailed("context does not exist");
return;
}
testPassed("context exists");
debug("");
debug("Testing signed normalized formats with EXT_render_snorm disabled");
formatTest(false, false);
ext = gl.getExtension("EXT_render_snorm");
wtu.runExtensionSupportedTest(gl, "EXT_render_snorm", ext !== null);
if (ext !== null) {
debug("");
debug("Testing signed normalized formats with only EXT_render_snorm enabled");
formatTest(true, false);
if (gl.getExtension("EXT_texture_norm16")) {
debug("");
debug("Testing signed normalized formats with EXT_render_snorm and EXT_texture_norm16 enabled");
formatTest(true, true);
}
} else {
testPassed("No EXT_render_snorm support -- this is legal");
}
}
runTest();
var successfullyParsed = true;
</script>
<script src="../../js/js-test-post.js"></script>
</body>
</html>
|
