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<!--
Copyright (c) 2019 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 CopyTexSubImage 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>
<canvas id="canvas" width="64px" height="32px"> </canvas>
<div id="console"></div>
<script id="vshader" type="x-shader/x-vertex">#version 300 es
in highp vec4 a_position;
in highp vec2 a_coord;
out highp vec2 v_coord;
void main(void) {
gl_Position = a_position;
v_coord = a_coord;
}
</script>
<script id="fshader_luminance_alpha" type="x-shader/x-fragment">#version 300 es
in highp vec2 v_coord;
uniform highp sampler3D u_sampler0;
out highp vec4 o_color0;
void main (void) {
o_color0 = vec4(texture(u_sampler0,vec3(v_coord, 0)));
}
</script>
<script>
"use strict";
description("This test verifies the behavior of copTexSubImage3D with luminance textures.");
debug("");
var wtu = WebGLTestUtils;
var canvas = document.getElementById("canvas");
var gl = wtu.create3DContext(canvas, null, 2);
function copytexsubimage3D_luma_format() {
var testGroup = [
{
name: '3d_alpha',
format: gl.ALPHA,
width: 64,
height: 32,
depth: 2
},
{
name: '3d_luminance',
format: gl.LUMINANCE,
width: 64,
height: 32,
depth: 2
},
{
name: '3d_luminance_alpha',
format: gl.LUMINANCE_ALPHA,
width: 64,
height: 32,
depth: 2
}
];
testGroup.forEach(function(testcase) {
debug("");
debug("Testing copytexsubimage3d_luma_format_" + testcase.name);
var texture = [];
texture[0] = gl.createTexture();
texture[1] = gl.createTexture();
var layer = 0;
var width = testcase.width;
var height = testcase.height;
var depth = testcase.depth;
var msg;
var uint1 = new Uint8Array(width * height * 4);
for (var i = 0; i < uint1.length - 1; ++i) {
uint1[i + 1] = (uint1[i] + 10) % 255;
}
gl.bindTexture(gl.TEXTURE_2D, texture[0]);
gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA8, width, height, 0, gl.RGBA, gl.UNSIGNED_BYTE, uint1);
var fbo = gl.createFramebuffer();
gl.bindFramebuffer(gl.FRAMEBUFFER, fbo);
gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, texture[0], 0);
if (gl.checkFramebufferStatus(gl.FRAMEBUFFER) == gl.FRAMEBUFFER_COMPLETE) {
gl.bindTexture(gl.TEXTURE_3D, texture[1]);
setUpTexStatus();
gl.texImage3D(gl.TEXTURE_3D, 0, testcase.format, width, height, depth, 0, testcase.format, gl.UNSIGNED_BYTE, null);
gl.copyTexSubImage3D(gl.TEXTURE_3D, 0, 0, 0, layer, 0, 0,width, height);
gl.bindFramebuffer(gl.FRAMEBUFFER, null);
var program = wtu.setupProgram(gl, ["vshader", "fshader_luminance_alpha"], ["a_position", "a_coord"]);
wtu.setupUnitQuad(gl, 0, 1);
wtu.drawUnitQuad(gl);
for (var y = 0; y < height; ++y) {
for (var x = 0; x < width; ++x) {
var cur = y * width * 4 + x * 4;
if (testcase.format == gl.ALPHA) {
wtu.checkCanvasRect(gl, x, y, 1, 1, [ 0, 0,
0, uint1[cur + 3]], msg, [1, 1, 1, 1]);
} else if (testcase.format == gl.LUMINANCE) {
wtu.checkCanvasRect(gl, x, y, 1, 1, [uint1[cur], uint1[cur],
uint1[cur], 255], msg, [1, 1, 1, 1]);
} else { // gl.LUMINANCE_ALPHA
wtu.checkCanvasRect(gl, x, y, 1, 1, [uint1[cur], uint1[cur],
uint1[cur], uint1[cur + 3]], msg, [1, 1, 1, 1]);
}
}
}
} else {
testFailed("framebuffer not complete");
}
gl.bindTexture(gl.TEXTURE_3D, null);
gl.bindFramebuffer(gl.FRAMEBUFFER, null);
gl.deleteFramebuffer(fbo);
gl.deleteTexture(texture[0]);
gl.deleteTexture(texture[1]);
gl.deleteProgram(program);
});
}
function setUpTexStatus() {
gl.texParameteri(
gl.TEXTURE_3D, gl.TEXTURE_MIN_FILTER, gl.NEAREST
);
gl.texParameteri(
gl.TEXTURE_3D, gl.TEXTURE_MAG_FILTER, gl.NEAREST
);
gl.texParameteri(
gl.TEXTURE_3D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE
);
gl.texParameteri(
gl.TEXTURE_3D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE
);
gl.texParameteri(
gl.TEXTURE_3D, gl.TEXTURE_WRAP_R, gl.CLAMP_TO_EDGE
);
}
if (!gl) {
testFailed("WebGL context does not exist");
} else {
testPassed("WebGL context exists");
copytexsubimage3D_luma_format();
}
debug("");
var successfullyParsed = true;
</script>
<script src="../../../js/js-test-post.js"></script>
</body>
</html>
|
