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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 uniform samplers with incompatible texture formats 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>
<script id="vshader" type="x-shader/x-vertex">#version 300 es
in vec4 a_vertex;
void main(void) {
gl_Position = a_vertex;
gl_PointSize = 1.0;
}
</script>
</head>
<body>
<canvas id="example" width="100", height="100"></canvas>
<div id="description"></div>
<div id="console"></div>
<script>
"use strict";
debug("");
description("Test that using an incompatible texture type generates INVALID_OPERATION at draw time");
var wtu = WebGLTestUtils;
var gl = wtu.create3DContext("example", undefined, 2);
function makeFragmentShader(samplerType, uvType) {
return `#version 300 es
precision mediump float;
uniform mediump ${samplerType} u_tex;
out vec4 color;
void main() {
color = vec4(texture(u_tex, ${uvType}));
}
`;
}
// Sampler types.
const FLOAT = 1;
const SIGNED = 2;
const UNSIGNED = 3;
const SHADOW = 4;
const textureInternalFormatInfo = {};
{
const t = textureInternalFormatInfo;
// unsized formats
t[gl.ALPHA] = { textureFormat: gl.ALPHA, samplerType: FLOAT, depth: false, bytesPerElement: [1, 2, 2, 4], type: [gl.UNSIGNED_BYTE, gl.HALF_FLOAT, gl.HALF_FLOAT_OES, gl.FLOAT], };
t[gl.LUMINANCE] = { textureFormat: gl.LUMINANCE, samplerType: FLOAT, depth: false, bytesPerElement: [1, 2, 2, 4], type: [gl.UNSIGNED_BYTE, gl.HALF_FLOAT, gl.HALF_FLOAT_OES, gl.FLOAT], };
t[gl.LUMINANCE_ALPHA] = { textureFormat: gl.LUMINANCE_ALPHA, samplerType: FLOAT, depth: false, bytesPerElement: [2, 4, 4, 8], type: [gl.UNSIGNED_BYTE, gl.HALF_FLOAT, gl.HALF_FLOAT_OES, gl.FLOAT], };
t[gl.RGB] = { textureFormat: gl.RGB, samplerType: FLOAT, depth: false, bytesPerElement: [3, 6, 6, 12, 2], type: [gl.UNSIGNED_BYTE, gl.HALF_FLOAT, gl.HALF_FLOAT_OES, gl.FLOAT, gl.UNSIGNED_SHORT_5_6_5], };
t[gl.RGBA] = { textureFormat: gl.RGBA, samplerType: FLOAT, depth: false, bytesPerElement: [4, 8, 8, 16, 2, 2], type: [gl.UNSIGNED_BYTE, gl.HALF_FLOAT, gl.HALF_FLOAT_OES, gl.FLOAT, gl.UNSIGNED_SHORT_4_4_4_4, gl.UNSIGNED_SHORT_5_5_5_1], };
// sized formats
t[gl.R8] = { textureFormat: gl.RED, samplerType: FLOAT, depth: false, bytesPerElement: [1], type: [gl.UNSIGNED_BYTE], };
t[gl.R8_SNORM] = { textureFormat: gl.RED, samplerType: FLOAT, depth: false, bytesPerElement: [1], type: [gl.BYTE], };
t[gl.R16F] = { textureFormat: gl.RED, samplerType: FLOAT, depth: false, bytesPerElement: [4, 2], type: [gl.FLOAT, gl.HALF_FLOAT], };
t[gl.R32F] = { textureFormat: gl.RED, samplerType: FLOAT, depth: false, bytesPerElement: [4], type: [gl.FLOAT], };
t[gl.R8UI] = { textureFormat: gl.RED_INTEGER, samplerType: UNSIGNED, depth: false, bytesPerElement: [1], type: [gl.UNSIGNED_BYTE], };
t[gl.R8I] = { textureFormat: gl.RED_INTEGER, samplerType: SIGNED, depth: false, bytesPerElement: [1], type: [gl.BYTE], };
t[gl.R16UI] = { textureFormat: gl.RED_INTEGER, samplerType: UNSIGNED, depth: false, bytesPerElement: [2], type: [gl.UNSIGNED_SHORT], };
t[gl.R16I] = { textureFormat: gl.RED_INTEGER, samplerType: SIGNED, depth: false, bytesPerElement: [2], type: [gl.SHORT], };
t[gl.R32UI] = { textureFormat: gl.RED_INTEGER, samplerType: UNSIGNED, depth: false, bytesPerElement: [4], type: [gl.UNSIGNED_INT], };
t[gl.R32I] = { textureFormat: gl.RED_INTEGER, samplerType: SIGNED, depth: false, bytesPerElement: [4], type: [gl.INT], };
t[gl.RG8] = { textureFormat: gl.RG, samplerType: FLOAT, depth: false, bytesPerElement: [2], type: [gl.UNSIGNED_BYTE], };
t[gl.RG8_SNORM] = { textureFormat: gl.RG, samplerType: FLOAT, depth: false, bytesPerElement: [2], type: [gl.BYTE], };
t[gl.RG16F] = { textureFormat: gl.RG, samplerType: FLOAT, depth: false, bytesPerElement: [8, 4], type: [gl.FLOAT, gl.HALF_FLOAT], };
t[gl.RG32F] = { textureFormat: gl.RG, samplerType: FLOAT, depth: false, bytesPerElement: [8], type: [gl.FLOAT], };
t[gl.RG8UI] = { textureFormat: gl.RG_INTEGER, samplerType: UNSIGNED, depth: false, bytesPerElement: [2], type: [gl.UNSIGNED_BYTE], };
t[gl.RG8I] = { textureFormat: gl.RG_INTEGER, samplerType: SIGNED, depth: false, bytesPerElement: [2], type: [gl.BYTE], };
t[gl.RG16UI] = { textureFormat: gl.RG_INTEGER, samplerType: UNSIGNED, depth: false, bytesPerElement: [4], type: [gl.UNSIGNED_SHORT], };
t[gl.RG16I] = { textureFormat: gl.RG_INTEGER, samplerType: SIGNED, depth: false, bytesPerElement: [4], type: [gl.SHORT], };
t[gl.RG32UI] = { textureFormat: gl.RG_INTEGER, samplerType: UNSIGNED, depth: false, bytesPerElement: [8], type: [gl.UNSIGNED_INT], };
t[gl.RG32I] = { textureFormat: gl.RG_INTEGER, samplerType: SIGNED, depth: false, bytesPerElement: [8], type: [gl.INT], };
t[gl.RGB8] = { textureFormat: gl.RGB, samplerType: FLOAT, depth: false, bytesPerElement: [3], type: [gl.UNSIGNED_BYTE], };
t[gl.SRGB8] = { textureFormat: gl.RGB, samplerType: FLOAT, depth: false, bytesPerElement: [3], type: [gl.UNSIGNED_BYTE], };
t[gl.RGB565] = { textureFormat: gl.RGB, samplerType: FLOAT, depth: false, bytesPerElement: [3, 2], type: [gl.UNSIGNED_BYTE, gl.UNSIGNED_SHORT_5_6_5], };
t[gl.RGB8_SNORM] = { textureFormat: gl.RGB, samplerType: FLOAT, depth: false, bytesPerElement: [3], type: [gl.BYTE], };
t[gl.R11F_G11F_B10F] = { textureFormat: gl.RGB, samplerType: FLOAT, depth: false, bytesPerElement: [12, 6, 4], type: [gl.FLOAT, gl.HALF_FLOAT, gl.UNSIGNED_INT_10F_11F_11F_REV], };
t[gl.RGB9_E5] = { textureFormat: gl.RGB, samplerType: FLOAT, depth: false, bytesPerElement: [12, 6, 4], type: [gl.FLOAT, gl.HALF_FLOAT, gl.UNSIGNED_INT_5_9_9_9_REV], };
t[gl.RGB16F] = { textureFormat: gl.RGB, samplerType: FLOAT, depth: false, bytesPerElement: [12, 6], type: [gl.FLOAT, gl.HALF_FLOAT], };
t[gl.RGB32F] = { textureFormat: gl.RGB, samplerType: FLOAT, depth: false, bytesPerElement: [12], type: [gl.FLOAT], };
t[gl.RGB8UI] = { textureFormat: gl.RGB_INTEGER, samplerType: UNSIGNED, depth: false, bytesPerElement: [3], type: [gl.UNSIGNED_BYTE], };
t[gl.RGB8I] = { textureFormat: gl.RGB_INTEGER, samplerType: SIGNED, depth: false, bytesPerElement: [3], type: [gl.BYTE], };
t[gl.RGB16UI] = { textureFormat: gl.RGB_INTEGER, samplerType: UNSIGNED, depth: false, bytesPerElement: [6], type: [gl.UNSIGNED_SHORT], };
t[gl.RGB16I] = { textureFormat: gl.RGB_INTEGER, samplerType: SIGNED, depth: false, bytesPerElement: [6], type: [gl.SHORT], };
t[gl.RGB32UI] = { textureFormat: gl.RGB_INTEGER, samplerType: UNSIGNED, depth: false, bytesPerElement: [12], type: [gl.UNSIGNED_INT], };
t[gl.RGB32I] = { textureFormat: gl.RGB_INTEGER, samplerType: SIGNED, depth: false, bytesPerElement: [12], type: [gl.INT], };
t[gl.RGBA8] = { textureFormat: gl.RGBA, samplerType: FLOAT, depth: false, bytesPerElement: [4], type: [gl.UNSIGNED_BYTE], };
t[gl.SRGB8_ALPHA8] = { textureFormat: gl.RGBA, samplerType: FLOAT, depth: false, bytesPerElement: [4], type: [gl.UNSIGNED_BYTE], };
t[gl.RGBA8_SNORM] = { textureFormat: gl.RGBA, samplerType: FLOAT, depth: false, bytesPerElement: [4], type: [gl.BYTE], };
t[gl.RGB5_A1] = { textureFormat: gl.RGBA, samplerType: FLOAT, depth: false, bytesPerElement: [4, 2, 4], type: [gl.UNSIGNED_BYTE, gl.UNSIGNED_SHORT_5_5_5_1, gl.UNSIGNED_INT_2_10_10_10_REV], };
t[gl.RGBA4] = { textureFormat: gl.RGBA, samplerType: FLOAT, depth: false, bytesPerElement: [4, 2], type: [gl.UNSIGNED_BYTE, gl.UNSIGNED_SHORT_4_4_4_4], };
t[gl.RGB10_A2] = { textureFormat: gl.RGBA, samplerType: FLOAT, depth: false, bytesPerElement: [4], type: [gl.UNSIGNED_INT_2_10_10_10_REV], };
t[gl.RGBA16F] = { textureFormat: gl.RGBA, samplerType: FLOAT, depth: false, bytesPerElement: [16, 8], type: [gl.FLOAT, gl.HALF_FLOAT], };
t[gl.RGBA32F] = { textureFormat: gl.RGBA, samplerType: FLOAT, depth: false, bytesPerElement: [16], type: [gl.FLOAT], };
t[gl.RGBA8UI] = { textureFormat: gl.RGBA_INTEGER, samplerType: UNSIGNED, depth: false, bytesPerElement: [4], type: [gl.UNSIGNED_BYTE], };
t[gl.RGBA8I] = { textureFormat: gl.RGBA_INTEGER, samplerType: SIGNED, depth: false, bytesPerElement: [4], type: [gl.BYTE], };
t[gl.RGB10_A2UI] = { textureFormat: gl.RGBA_INTEGER, samplerType: UNSIGNED, depth: false, bytesPerElement: [4], type: [gl.UNSIGNED_INT_2_10_10_10_REV], };
t[gl.RGBA16UI] = { textureFormat: gl.RGBA_INTEGER, samplerType: UNSIGNED, depth: false, bytesPerElement: [8], type: [gl.UNSIGNED_SHORT], };
t[gl.RGBA16I] = { textureFormat: gl.RGBA_INTEGER, samplerType: SIGNED, depth: false, bytesPerElement: [8], type: [gl.SHORT], };
t[gl.RGBA32I] = { textureFormat: gl.RGBA_INTEGER, samplerType: SIGNED, depth: false, bytesPerElement: [16], type: [gl.INT], };
t[gl.RGBA32UI] = { textureFormat: gl.RGBA_INTEGER, samplerType: UNSIGNED, depth: false, bytesPerElement: [16], type: [gl.UNSIGNED_INT], };
// Sized Internal
// Note that samplerType is FLOAT for depth formats, not SHADOW. Shadow
// samplers are handled as a special case in the test code because they have
// special rules about TEXTURE_COMPARE_MODE.
t[gl.DEPTH_COMPONENT16] = { textureFormat: gl.DEPTH_COMPONENT, samplerType: FLOAT, depth: true, bytesPerElement: [2, 4], type: [gl.UNSIGNED_SHORT, gl.UNSIGNED_INT], };
t[gl.DEPTH_COMPONENT24] = { textureFormat: gl.DEPTH_COMPONENT, samplerType: FLOAT, depth: true, bytesPerElement: [4], type: [gl.UNSIGNED_INT], };
t[gl.DEPTH_COMPONENT32F] = { textureFormat: gl.DEPTH_COMPONENT, samplerType: FLOAT, depth: true, bytesPerElement: [4], type: [gl.FLOAT], };
t[gl.DEPTH24_STENCIL8] = { textureFormat: gl.DEPTH_STENCIL, samplerType: FLOAT, depth: true, bytesPerElement: [4], type: [gl.UNSIGNED_INT_24_8], };
t[gl.DEPTH32F_STENCIL8] = { textureFormat: gl.DEPTH_STENCIL, samplerType: FLOAT, depth: true, bytesPerElement: [4], type: [gl.FLOAT_32_UNSIGNED_INT_24_8_REV], };
// TODO: Compressed formats.
Object.keys(t).forEach(function(internalFormat) {
const info = t[internalFormat];
info.bytesPerElementMap = {};
info.bytesPerElement.forEach(function(bytesPerElement, ndx) {
const type = info.type[ndx];
info.bytesPerElementMap[type] = bytesPerElement;
});
});
}
const floatSamplerTypes = [
{ type: 'sampler2D', uvType: 'vec2(0)', target: gl.TEXTURE_2D, },
{ type: 'sampler3D', uvType: 'vec3(0)', target: gl.TEXTURE_3D, },
{ type: 'samplerCube', uvType: 'vec3(0)', target: gl.TEXTURE_CUBE_MAP, },
{ type: 'sampler2DArray', uvType: 'vec3(0)', target: gl.TEXTURE_2D_ARRAY, },
];
const signedIntSamplerTypes = [
{ type: 'isampler2D', uvType: 'vec2(0)', target: gl.TEXTURE_2D, },
{ type: 'isampler3D', uvType: 'vec3(0)', target: gl.TEXTURE_3D, },
{ type: 'isamplerCube', uvType: 'vec3(0)', target: gl.TEXTURE_CUBE_MAP, },
{ type: 'isampler2DArray', uvType: 'vec3(0)', target: gl.TEXTURE_2D_ARRAY, },
];
const unsignedIntSamplerTypes = [
{ type: 'usampler2D', uvType: 'vec2(0)', target: gl.TEXTURE_2D, },
{ type: 'usampler3D', uvType: 'vec3(0)', target: gl.TEXTURE_3D, },
{ type: 'usamplerCube', uvType: 'vec3(0)', target: gl.TEXTURE_CUBE_MAP, },
{ type: 'usampler2DArray', uvType: 'vec3(0)', target: gl.TEXTURE_2D_ARRAY, },
];
const shadowSamplerTypes = [
{ type: 'sampler2DShadow', uvType: 'vec3(0)', target: gl.TEXTURE_2D, },
{ type: 'samplerCubeShadow', uvType: 'vec4(0)', target: gl.TEXTURE_CUBE_MAP, },
{ type: 'sampler2DArrayShadow', uvType: 'vec4(0)', target: gl.TEXTURE_2D_ARRAY, },
]
/**
* Gets the number of bytes per element for a given internalFormat / type
* @param {number} internalFormat The internalFormat parameter from texImage2D etc..
* @param {number} type The type parameter for texImage2D etc..
* @return {number} the number of bytes per element for the given internalFormat, type combo
* @memberOf module:twgl/textures
*/
function getBytesPerElementForInternalFormat(internalFormat, type) {
const info = textureInternalFormatInfo[internalFormat];
if (!info) {
throw "unknown internal format";
}
const bytesPerElement = info.bytesPerElementMap[type];
if (bytesPerElement === undefined) {
throw "unknown internal format";
}
return bytesPerElement;
}
function make2DTexture(target, internalFormat, format, type) {
gl.texImage2D(target, 0, internalFormat, 1, 1, 0, format, type, null);
}
function make3DTexture(target, internalFormat, format, type) {
gl.texImage3D(target, 0, internalFormat, 1, 1, 1, 0, format, type, null);
}
function makeCubeMapTexture(target, internalFormat, format, type) {
[
gl.TEXTURE_CUBE_MAP_POSITIVE_X,
gl.TEXTURE_CUBE_MAP_NEGATIVE_X,
gl.TEXTURE_CUBE_MAP_POSITIVE_Y,
gl.TEXTURE_CUBE_MAP_NEGATIVE_Y,
gl.TEXTURE_CUBE_MAP_POSITIVE_Z,
gl.TEXTURE_CUBE_MAP_NEGATIVE_Z,
].forEach(function(target) {
gl.texImage2D(target, 0, internalFormat, 1, 1, 0, format, type, null);
});
}
function runTest() {
const targets = {};
targets[gl.TEXTURE_2D] = { fn: make2DTexture, },
targets[gl.TEXTURE_3D] = { fn: make3DTexture, },
targets[gl.TEXTURE_CUBE_MAP] = { fn: makeCubeMapTexture, },
targets[gl.TEXTURE_2D_ARRAY] = { fn: make3DTexture, },
Object.keys(targets).forEach(function(target) {
target = parseInt(target);
const targetInfo = targets[target];
targetInfo.textures = [];
Object.keys(textureInternalFormatInfo).forEach(function(internalFormat) {
internalFormat = parseInt(internalFormat);
const isDepthFormat = textureInternalFormatInfo[internalFormat].depth;
if (target === gl.TEXTURE_3D && isDepthFormat) {
return;
}
const info = textureInternalFormatInfo[internalFormat];
const texture = gl.createTexture();
gl.bindTexture(target, texture);
targetInfo.fn(target, internalFormat, info.textureFormat, info.type[0]);
targetInfo.textures.push({
internalFormat: internalFormat,
texture: texture,
});
gl.texParameteri(target, gl.TEXTURE_MIN_FILTER, gl.NEAREST);
gl.texParameteri(target, gl.TEXTURE_MAG_FILTER, gl.NEAREST);
gl.texParameteri(target, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
gl.texParameteri(target, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
gl.texParameteri(target, gl.TEXTURE_WRAP_R, gl.CLAMP_TO_EDGE);
wtu.glErrorShouldBe(gl, gl.NO_ERROR, `No errors from setup for ${wtu.glEnumToString(gl, target)} ${wtu.glEnumToString(gl, internalFormat)}`);
});
});
const samplerObject = gl.createSampler();
gl.samplerParameteri(samplerObject, gl.TEXTURE_MIN_FILTER, gl.NEAREST);
gl.samplerParameteri(samplerObject, gl.TEXTURE_MAG_FILTER, gl.NEAREST);
gl.samplerParameteri(samplerObject, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
gl.samplerParameteri(samplerObject, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
gl.samplerParameteri(samplerObject, gl.TEXTURE_WRAP_R, gl.CLAMP_TO_EDGE);
// The rules implemented here are:
// Float samplers accept only float textures and normalized integer textures
// (signed or unsigned) and depth textures with TEXTURE_COMPARE_MODE set to
// NONE.
// Signed samplers accept only signed unnormalized integer textures.
// Unsigned samplers accept only unsigned unnormalized integer textures.
// Shadow samplers accept only depth textures with
// TEXTURE_COMPARE_MODE set to COMPARE_REF_TO_TEXTURE.
testSamplerType(FLOAT, floatSamplerTypes);
testSamplerType(SIGNED, signedIntSamplerTypes);
testSamplerType(UNSIGNED, unsignedIntSamplerTypes);
testSamplerType(SHADOW, shadowSamplerTypes);
function testSamplerType(samplerType, samplerInfos) {
samplerInfos.forEach(function(samplerInfo) {
debug(`\nchecking ${samplerInfo.type}`);
const program = wtu.setupProgram(gl, ['vshader', makeFragmentShader(samplerInfo.type, samplerInfo.uvType)], [], console.log.bind(console));
if (!program) {
testFailed("Loading program failed");
return;
}
testPassed("Loading program succeeded");
const target = samplerInfo.target;
const targetInfo = targets[target];
targetInfo.textures.forEach(function(textureInfo) {
const internalFormat = textureInfo.internalFormat;
const desc = wtu.glEnumToString(gl, internalFormat);
const info = textureInternalFormatInfo[internalFormat];
// The texture object can have two values of TEXTURE_COMPARE_MODE: NONE or
// COMPARE_REF_TO_TEXTURE. However, the sampler can have three states:
// No sampler object bound, sampler object with NONE, and sampler object with
// COMPARE_REF_TO_TEXTURE. When a sampler object is bound, it overrides the
// texture object's state. We test 2*3=6 possible combinations of state.
// First test the three states that result in TEXTURE_COMPARE_MODE being NONE.
let expected = samplerType == info.samplerType ? gl.NONE : gl.INVALID_OPERATION;
gl.bindTexture(target, textureInfo.texture);
gl.drawArrays(gl.POINTS, 0, 1);
wtu.glErrorShouldBe(gl, expected, `${desc} texture state NONE, no sampler object`);
gl.bindSampler(0, samplerObject);
gl.samplerParameteri(samplerObject, gl.TEXTURE_COMPARE_MODE, gl.NONE);
gl.drawArrays(gl.POINTS, 0, 1);
wtu.glErrorShouldBe(gl, expected, `${desc} texture state NONE, sampler state NONE`);
gl.texParameteri(target, gl.TEXTURE_COMPARE_MODE, gl.COMPARE_REF_TO_TEXTURE);
gl.drawArrays(gl.POINTS, 0, 1);
wtu.glErrorShouldBe(gl, expected, `${desc} texture state COMPARE_REF_TO_TEXTURE, sampler state NONE`);
// Now test test the three states that result in TEXTURE_COMPARE_MODE being COMPARE_REF_TO_TEXTURE.
if (info.depth) {
expected = samplerType == SHADOW ? gl.NONE : gl.INVALID_OPERATION;
}
gl.bindSampler(0, null);
gl.drawArrays(gl.POINTS, 0, 1);
wtu.glErrorShouldBe(gl, expected, `${desc} texture state COMPARE_REF_TO_TEXTURE, no sampler object`);
gl.bindSampler(0, samplerObject);
gl.samplerParameteri(samplerObject, gl.TEXTURE_COMPARE_MODE, gl.COMPARE_REF_TO_TEXTURE);
gl.drawArrays(gl.POINTS, 0, 1);
wtu.glErrorShouldBe(gl, expected, `${desc} texture state COMPARE_REF_TO_TEXTURE, sampler state COMPARE_REF_TO_TEXTURE`);
gl.texParameteri(target, gl.TEXTURE_COMPARE_MODE, gl.NONE);
gl.drawArrays(gl.POINTS, 0, 1);
wtu.glErrorShouldBe(gl, expected, `${desc} texture state NONE, sampler state COMPARE_REF_TO_TEXTURE`);
gl.bindSampler(0, null);
});
});
};
}
if (!gl) {
testFailed("WebGL context creation failed");
} else {
testPassed("WebGL context creation succeeded");
runTest();
}
debug("");
var successfullyParsed = true;
</script>
<script src="../../js/js-test-post.js"></script>
</body>
</html>
|
