321 lines
12 KiB
JavaScript
321 lines
12 KiB
JavaScript
import {
|
|
getSymbolVertexShader,
|
|
formatNumber,
|
|
getSymbolFragmentShader,
|
|
formatColor, formatArray, parse, parseSymbolStyle
|
|
} from '../../../../src/ol/webgl/ShaderBuilder.js';
|
|
|
|
describe('ol.webgl.ShaderBuilder', function() {
|
|
|
|
describe('formatNumber', function() {
|
|
it('does a simple transform when a fraction is present', function() {
|
|
expect(formatNumber(1.3456)).to.eql('1.3456');
|
|
});
|
|
it('adds a fraction separator when missing', function() {
|
|
expect(formatNumber(1)).to.eql('1.0');
|
|
expect(formatNumber(2.0)).to.eql('2.0');
|
|
});
|
|
});
|
|
|
|
describe('formatArray', function() {
|
|
it('outputs numbers with dot separators', function() {
|
|
expect(formatArray([1, 0, 3.45, 0.8888])).to.eql('1.0, 0.0, 3.45, 0.8888');
|
|
});
|
|
});
|
|
|
|
describe('formatColor', function() {
|
|
it('normalizes color and outputs numbers with dot separators', function() {
|
|
expect(formatColor([100, 0, 255, 1])).to.eql('0.39215686274509803, 0.0, 1.0, 1.0');
|
|
});
|
|
});
|
|
|
|
describe('getSymbolVertexShader', function() {
|
|
it('generates a symbol vertex shader (with varying)', function() {
|
|
const parameters = {
|
|
varyings: [{
|
|
name: 'v_opacity',
|
|
type: 'float',
|
|
expression: formatNumber(0.4)
|
|
}, {
|
|
name: 'v_test',
|
|
type: 'vec3',
|
|
expression: 'vec3(' + formatArray([1, 2, 3]) + ')'
|
|
}],
|
|
sizeExpression: 'vec2(' + formatNumber(6) + ')',
|
|
offsetExpression: 'vec2(' + formatArray([5, -7]) + ')',
|
|
colorExpression: 'vec4(' + formatColor([80, 0, 255, 1]) + ')',
|
|
texCoordExpression: 'vec4(' + formatArray([0, 0.5, 0.5, 1]) + ')',
|
|
rotateWithView: false
|
|
};
|
|
|
|
expect(getSymbolVertexShader(parameters)).to.eql(`precision mediump float;
|
|
uniform mat4 u_projectionMatrix;
|
|
uniform mat4 u_offsetScaleMatrix;
|
|
uniform mat4 u_offsetRotateMatrix;
|
|
|
|
attribute vec2 a_position;
|
|
attribute float a_index;
|
|
|
|
varying vec2 v_texCoord;
|
|
varying vec2 v_quadCoord;
|
|
varying float v_opacity;
|
|
varying vec3 v_test;
|
|
void main(void) {
|
|
mat4 offsetMatrix = u_offsetScaleMatrix;
|
|
vec2 size = vec2(6.0);
|
|
vec2 offset = vec2(5.0, -7.0);
|
|
float offsetX = a_index == 0.0 || a_index == 3.0 ? offset.x - size.x / 2.0 : offset.x + size.x / 2.0;
|
|
float offsetY = a_index == 0.0 || a_index == 1.0 ? offset.y - size.y / 2.0 : offset.y + size.y / 2.0;
|
|
vec4 offsets = offsetMatrix * vec4(offsetX, offsetY, 0.0, 0.0);
|
|
gl_Position = u_projectionMatrix * vec4(a_position, 0.0, 1.0) + offsets;
|
|
vec4 texCoord = vec4(0.0, 0.5, 0.5, 1.0);
|
|
float u = a_index == 0.0 || a_index == 3.0 ? texCoord.s : texCoord.q;
|
|
float v = a_index == 2.0 || a_index == 3.0 ? texCoord.t : texCoord.p;
|
|
v_texCoord = vec2(u, v);
|
|
u = a_index == 0.0 || a_index == 3.0 ? 0.0 : 1.0;
|
|
v = a_index == 2.0 || a_index == 3.0 ? 0.0 : 1.0;
|
|
v_quadCoord = vec2(u, v);
|
|
v_opacity = 0.4;
|
|
v_test = vec3(1.0, 2.0, 3.0);
|
|
}`);
|
|
});
|
|
it('generates a symbol vertex shader (with uniforms and attributes)', function() {
|
|
const parameters = {
|
|
uniforms: ['float u_myUniform'],
|
|
attributes: ['vec2 a_myAttr'],
|
|
sizeExpression: 'vec2(' + formatNumber(6) + ')',
|
|
offsetExpression: 'vec2(' + formatArray([5, -7]) + ')',
|
|
colorExpression: 'vec4(' + formatColor([80, 0, 255, 1]) + ')',
|
|
texCoordExpression: 'vec4(' + formatArray([0, 0.5, 0.5, 1]) + ')'
|
|
};
|
|
|
|
expect(getSymbolVertexShader(parameters)).to.eql(`precision mediump float;
|
|
uniform mat4 u_projectionMatrix;
|
|
uniform mat4 u_offsetScaleMatrix;
|
|
uniform mat4 u_offsetRotateMatrix;
|
|
uniform float u_myUniform;
|
|
attribute vec2 a_position;
|
|
attribute float a_index;
|
|
attribute vec2 a_myAttr;
|
|
varying vec2 v_texCoord;
|
|
varying vec2 v_quadCoord;
|
|
|
|
void main(void) {
|
|
mat4 offsetMatrix = u_offsetScaleMatrix;
|
|
vec2 size = vec2(6.0);
|
|
vec2 offset = vec2(5.0, -7.0);
|
|
float offsetX = a_index == 0.0 || a_index == 3.0 ? offset.x - size.x / 2.0 : offset.x + size.x / 2.0;
|
|
float offsetY = a_index == 0.0 || a_index == 1.0 ? offset.y - size.y / 2.0 : offset.y + size.y / 2.0;
|
|
vec4 offsets = offsetMatrix * vec4(offsetX, offsetY, 0.0, 0.0);
|
|
gl_Position = u_projectionMatrix * vec4(a_position, 0.0, 1.0) + offsets;
|
|
vec4 texCoord = vec4(0.0, 0.5, 0.5, 1.0);
|
|
float u = a_index == 0.0 || a_index == 3.0 ? texCoord.s : texCoord.q;
|
|
float v = a_index == 2.0 || a_index == 3.0 ? texCoord.t : texCoord.p;
|
|
v_texCoord = vec2(u, v);
|
|
u = a_index == 0.0 || a_index == 3.0 ? 0.0 : 1.0;
|
|
v = a_index == 2.0 || a_index == 3.0 ? 0.0 : 1.0;
|
|
v_quadCoord = vec2(u, v);
|
|
|
|
}`);
|
|
});
|
|
it('generates a symbol vertex shader (with rotateWithView)', function() {
|
|
const parameters = {
|
|
sizeExpression: 'vec2(' + formatNumber(6) + ')',
|
|
offsetExpression: 'vec2(' + formatArray([5, -7]) + ')',
|
|
colorExpression: 'vec4(' + formatColor([80, 0, 255, 1]) + ')',
|
|
texCoordExpression: 'vec4(' + formatArray([0, 0.5, 0.5, 1]) + ')',
|
|
rotateWithView: true
|
|
};
|
|
|
|
expect(getSymbolVertexShader(parameters)).to.eql(`precision mediump float;
|
|
uniform mat4 u_projectionMatrix;
|
|
uniform mat4 u_offsetScaleMatrix;
|
|
uniform mat4 u_offsetRotateMatrix;
|
|
|
|
attribute vec2 a_position;
|
|
attribute float a_index;
|
|
|
|
varying vec2 v_texCoord;
|
|
varying vec2 v_quadCoord;
|
|
|
|
void main(void) {
|
|
mat4 offsetMatrix = u_offsetScaleMatrix * u_offsetRotateMatrix;
|
|
vec2 size = vec2(6.0);
|
|
vec2 offset = vec2(5.0, -7.0);
|
|
float offsetX = a_index == 0.0 || a_index == 3.0 ? offset.x - size.x / 2.0 : offset.x + size.x / 2.0;
|
|
float offsetY = a_index == 0.0 || a_index == 1.0 ? offset.y - size.y / 2.0 : offset.y + size.y / 2.0;
|
|
vec4 offsets = offsetMatrix * vec4(offsetX, offsetY, 0.0, 0.0);
|
|
gl_Position = u_projectionMatrix * vec4(a_position, 0.0, 1.0) + offsets;
|
|
vec4 texCoord = vec4(0.0, 0.5, 0.5, 1.0);
|
|
float u = a_index == 0.0 || a_index == 3.0 ? texCoord.s : texCoord.q;
|
|
float v = a_index == 2.0 || a_index == 3.0 ? texCoord.t : texCoord.p;
|
|
v_texCoord = vec2(u, v);
|
|
u = a_index == 0.0 || a_index == 3.0 ? 0.0 : 1.0;
|
|
v = a_index == 2.0 || a_index == 3.0 ? 0.0 : 1.0;
|
|
v_quadCoord = vec2(u, v);
|
|
|
|
}`);
|
|
});
|
|
});
|
|
|
|
describe('getSymbolFragmentShader', function() {
|
|
it('generates a symbol fragment shader (with varying)', function() {
|
|
const parameters = {
|
|
varyings: [{
|
|
name: 'v_opacity',
|
|
type: 'float',
|
|
expression: formatNumber(0.4)
|
|
}, {
|
|
name: 'v_test',
|
|
type: 'vec3',
|
|
expression: 'vec3(' + formatArray([1, 2, 3]) + ')'
|
|
}],
|
|
sizeExpression: 'vec2(' + formatNumber(6) + ')',
|
|
offsetExpression: 'vec2(' + formatArray([5, -7]) + ')',
|
|
colorExpression: 'vec4(' + formatColor([80, 0, 255]) + ', v_opacity)',
|
|
texCoordExpression: 'vec4(' + formatArray([0, 0.5, 0.5, 1]) + ')',
|
|
rotateWithView: false
|
|
};
|
|
|
|
expect(getSymbolFragmentShader(parameters)).to.eql(`precision mediump float;
|
|
|
|
varying vec2 v_texCoord;
|
|
varying vec2 v_quadCoord;
|
|
varying float v_opacity;
|
|
varying vec3 v_test;
|
|
void main(void) {
|
|
gl_FragColor = vec4(0.3137254901960784, 0.0, 1.0, v_opacity);
|
|
gl_FragColor.rgb *= gl_FragColor.a;
|
|
}`);
|
|
});
|
|
it('generates a symbol fragment shader (with uniforms)', function() {
|
|
const parameters = {
|
|
uniforms: ['float u_myUniform', 'vec2 u_myUniform2'],
|
|
sizeExpression: 'vec2(' + formatNumber(6) + ')',
|
|
offsetExpression: 'vec2(' + formatArray([5, -7]) + ')',
|
|
colorExpression: 'vec4(' + formatColor([255, 255, 255, 1]) + ')',
|
|
texCoordExpression: 'vec4(' + formatArray([0, 0.5, 0.5, 1]) + ')'
|
|
};
|
|
|
|
expect(getSymbolFragmentShader(parameters)).to.eql(`precision mediump float;
|
|
uniform float u_myUniform;
|
|
uniform vec2 u_myUniform2;
|
|
varying vec2 v_texCoord;
|
|
varying vec2 v_quadCoord;
|
|
|
|
void main(void) {
|
|
gl_FragColor = vec4(1.0, 1.0, 1.0, 1.0);
|
|
gl_FragColor.rgb *= gl_FragColor.a;
|
|
}`);
|
|
});
|
|
});
|
|
|
|
describe('parse', function() {
|
|
let attributes, prefix, parseFn;
|
|
|
|
beforeEach(function() {
|
|
attributes = [];
|
|
prefix = 'a_';
|
|
parseFn = function(value) {
|
|
return parse(value, attributes, prefix);
|
|
};
|
|
});
|
|
|
|
it('parses expressions & literal values', function() {
|
|
expect(parseFn(1)).to.eql('1.0');
|
|
expect(parseFn(['get', 'myAttr'])).to.eql('a_myAttr');
|
|
expect(parseFn(['+', ['*', ['get', 'size'], 0.001], 12])).to.eql('((a_size * 0.001) + 12.0)');
|
|
expect(parseFn(['clamp', ['get', 'attr2'], ['get', 'attr3'], 20])).to.eql('clamp(a_attr2, a_attr3, 20.0)');
|
|
expect(parseFn(['stretch', ['get', 'size'], 10, 100, 4, 8])).to.eql('(clamp(a_size, 10.0, 100.0) * ((8.0 - 4.0) / (100.0 - 10.0)) + 4.0)');
|
|
expect(attributes).to.eql(['myAttr', 'size', 'attr2', 'attr3']);
|
|
});
|
|
|
|
it('does not register an attribute several times', function() {
|
|
parseFn(['get', 'myAttr']);
|
|
parseFn(['clamp', ['get', 'attr2'], ['get', 'attr2'], ['get', 'myAttr']]);
|
|
expect(attributes).to.eql(['myAttr', 'attr2']);
|
|
});
|
|
});
|
|
|
|
describe('parseSymbolStyle', function() {
|
|
it('parses a style without expressions', function() {
|
|
const result = parseSymbolStyle({
|
|
symbolType: 'square',
|
|
size: [4, 8],
|
|
color: '#336699',
|
|
rotateWithView: true
|
|
});
|
|
expect(result.params).to.eql({
|
|
uniforms: [],
|
|
attributes: [],
|
|
varyings: [],
|
|
colorExpression: 'vec4(0.2, 0.4, 0.6, 1.0) * vec4(1.0, 1.0, 1.0, 1.0 * 1.0)',
|
|
sizeExpression: 'vec2(4.0, 8.0)',
|
|
offsetExpression: 'vec2(0.0, 0.0)',
|
|
texCoordExpression: 'vec4(0.0, 0.0, 1.0, 1.0)',
|
|
rotateWithView: true
|
|
});
|
|
expect(result.attributes).to.eql([]);
|
|
expect(result.uniforms).to.eql({});
|
|
});
|
|
|
|
it('parses a style with expressions', function() {
|
|
const result = parseSymbolStyle({
|
|
symbolType: 'square',
|
|
size: ['get', 'attr1'],
|
|
color: [
|
|
1.0, 0.0, 0.5, ['get', 'attr2']
|
|
],
|
|
textureCoord: [0.5, 0.5, 0.5, 1],
|
|
offset: [3, ['get', 'attr3']]
|
|
});
|
|
expect(result.params).to.eql({
|
|
uniforms: [],
|
|
attributes: ['float a_attr1', 'float a_attr3', 'float a_attr2'],
|
|
varyings: [{
|
|
name: 'v_attr1',
|
|
type: 'float',
|
|
expression: 'a_attr1'
|
|
}, {
|
|
name: 'v_attr2',
|
|
type: 'float',
|
|
expression: 'a_attr2'
|
|
}],
|
|
colorExpression: 'vec4(1.0, 0.0, 0.5, v_attr2) * vec4(1.0, 1.0, 1.0, 1.0 * 1.0)',
|
|
sizeExpression: 'vec2(a_attr1, a_attr1)',
|
|
offsetExpression: 'vec2(3.0, a_attr3)',
|
|
texCoordExpression: 'vec4(0.5, 0.5, 0.5, 1.0)',
|
|
rotateWithView: false
|
|
});
|
|
expect(result.attributes.length).to.eql(3);
|
|
expect(result.attributes[0].name).to.eql('attr1');
|
|
expect(result.attributes[1].name).to.eql('attr3');
|
|
expect(result.attributes[2].name).to.eql('attr2');
|
|
expect(result.uniforms).to.eql({});
|
|
});
|
|
|
|
it('parses a style with a uniform (texture)', function() {
|
|
const result = parseSymbolStyle({
|
|
symbolType: 'image',
|
|
src: '../data/image.png',
|
|
size: 6,
|
|
color: '#336699',
|
|
opacity: 0.5
|
|
});
|
|
expect(result.params).to.eql({
|
|
uniforms: ['sampler2D u_texture'],
|
|
attributes: [],
|
|
varyings: [],
|
|
colorExpression: 'vec4(0.2, 0.4, 0.6, 1.0) * vec4(1.0, 1.0, 1.0, 0.5 * 1.0) * texture2D(u_texture, v_texCoord)',
|
|
sizeExpression: 'vec2(6.0, 6.0)',
|
|
offsetExpression: 'vec2(0.0, 0.0)',
|
|
texCoordExpression: 'vec4(0.0, 0.0, 1.0, 1.0)',
|
|
rotateWithView: false
|
|
});
|
|
expect(result.attributes).to.eql([]);
|
|
expect(result.uniforms).to.have.property('u_texture');
|
|
});
|
|
});
|
|
|
|
});
|