40d44db85e
Previously the expression was parsed in the fragment shader context, which meant in case the expression used an attributes the resulting GLSL code would be wrong. Fragment shader context: `float angle = v_heading; // we're using the varying: not OK` Vertex shader context: `float angle = a_heading; // we're using the attribute: OK`
580 lines
22 KiB
JavaScript
580 lines
22 KiB
JavaScript
import {parseLiteralStyle, ShaderBuilder} from '../../../../src/ol/webgl/ShaderBuilder.js';
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import {arrayToGlsl, colorToGlsl, numberToGlsl} from '../../../../src/ol/style/expressions.js';
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describe('ol.webgl.ShaderBuilder', function() {
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describe('getSymbolVertexShader', function() {
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it('generates a symbol vertex shader (with varying)', function() {
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const builder = new ShaderBuilder();
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builder.addVarying('v_opacity', 'float', numberToGlsl(0.4));
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builder.addVarying('v_test', 'vec3', arrayToGlsl([1, 2, 3]));
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builder.setSizeExpression(`vec2(${numberToGlsl(6)})`);
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builder.setSymbolOffsetExpression(arrayToGlsl([5, -7]));
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builder.setColorExpression(colorToGlsl([80, 0, 255, 1]));
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builder.setTextureCoordinateExpression(arrayToGlsl([0, 0.5, 0.5, 1]));
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expect(builder.getSymbolVertexShader()).to.eql(`precision mediump float;
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uniform mat4 u_projectionMatrix;
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uniform mat4 u_offsetScaleMatrix;
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uniform mat4 u_offsetRotateMatrix;
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uniform float u_time;
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uniform float u_zoom;
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uniform float u_resolution;
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attribute vec2 a_position;
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attribute float a_index;
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varying vec2 v_texCoord;
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varying vec2 v_quadCoord;
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varying float v_opacity;
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varying vec3 v_test;
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void main(void) {
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mat4 offsetMatrix = u_offsetScaleMatrix;
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vec2 halfSize = vec2(6.0) * 0.5;
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vec2 offset = vec2(5.0, -7.0);
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float angle = 0.0;
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float offsetX;
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float offsetY;
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if (a_index == 0.0) {
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offsetX = (offset.x - halfSize.x) * cos(angle) + (offset.y - halfSize.y) * sin(angle);
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offsetY = (offset.y - halfSize.y) * cos(angle) - (offset.x - halfSize.x) * sin(angle);
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} else if (a_index == 1.0) {
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offsetX = (offset.x + halfSize.x) * cos(angle) + (offset.y - halfSize.y) * sin(angle);
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offsetY = (offset.y - halfSize.y) * cos(angle) - (offset.x + halfSize.x) * sin(angle);
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} else if (a_index == 2.0) {
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offsetX = (offset.x + halfSize.x) * cos(angle) + (offset.y + halfSize.y) * sin(angle);
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offsetY = (offset.y + halfSize.y) * cos(angle) - (offset.x + halfSize.x) * sin(angle);
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} else {
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offsetX = (offset.x - halfSize.x) * cos(angle) + (offset.y + halfSize.y) * sin(angle);
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offsetY = (offset.y + halfSize.y) * cos(angle) - (offset.x - halfSize.x) * sin(angle);
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}
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vec4 offsets = offsetMatrix * vec4(offsetX, offsetY, 0.0, 0.0);
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gl_Position = u_projectionMatrix * vec4(a_position, 0.0, 1.0) + offsets;
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vec4 texCoord = vec4(0.0, 0.5, 0.5, 1.0);
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float u = a_index == 0.0 || a_index == 3.0 ? texCoord.s : texCoord.p;
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float v = a_index == 2.0 || a_index == 3.0 ? texCoord.t : texCoord.q;
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v_texCoord = vec2(u, v);
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u = a_index == 0.0 || a_index == 3.0 ? 0.0 : 1.0;
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v = a_index == 2.0 || a_index == 3.0 ? 0.0 : 1.0;
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v_quadCoord = vec2(u, v);
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v_opacity = 0.4;
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v_test = vec3(1.0, 2.0, 3.0);
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}`);
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});
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it('generates a symbol vertex shader (with uniforms and attributes)', function() {
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const builder = new ShaderBuilder();
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builder.addUniform('float u_myUniform');
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builder.addAttribute('vec2 a_myAttr');
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builder.setSizeExpression(`vec2(${numberToGlsl(6)})`);
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builder.setSymbolOffsetExpression(arrayToGlsl([5, -7]));
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builder.setColorExpression(colorToGlsl([80, 0, 255, 1]));
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builder.setTextureCoordinateExpression(arrayToGlsl([0, 0.5, 0.5, 1]));
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expect(builder.getSymbolVertexShader()).to.eql(`precision mediump float;
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uniform mat4 u_projectionMatrix;
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uniform mat4 u_offsetScaleMatrix;
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uniform mat4 u_offsetRotateMatrix;
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uniform float u_time;
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uniform float u_zoom;
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uniform float u_resolution;
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uniform float u_myUniform;
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attribute vec2 a_position;
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attribute float a_index;
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attribute vec2 a_myAttr;
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varying vec2 v_texCoord;
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varying vec2 v_quadCoord;
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void main(void) {
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mat4 offsetMatrix = u_offsetScaleMatrix;
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vec2 halfSize = vec2(6.0) * 0.5;
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vec2 offset = vec2(5.0, -7.0);
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float angle = 0.0;
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float offsetX;
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float offsetY;
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if (a_index == 0.0) {
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offsetX = (offset.x - halfSize.x) * cos(angle) + (offset.y - halfSize.y) * sin(angle);
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offsetY = (offset.y - halfSize.y) * cos(angle) - (offset.x - halfSize.x) * sin(angle);
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} else if (a_index == 1.0) {
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offsetX = (offset.x + halfSize.x) * cos(angle) + (offset.y - halfSize.y) * sin(angle);
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offsetY = (offset.y - halfSize.y) * cos(angle) - (offset.x + halfSize.x) * sin(angle);
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} else if (a_index == 2.0) {
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offsetX = (offset.x + halfSize.x) * cos(angle) + (offset.y + halfSize.y) * sin(angle);
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offsetY = (offset.y + halfSize.y) * cos(angle) - (offset.x + halfSize.x) * sin(angle);
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} else {
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offsetX = (offset.x - halfSize.x) * cos(angle) + (offset.y + halfSize.y) * sin(angle);
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offsetY = (offset.y + halfSize.y) * cos(angle) - (offset.x - halfSize.x) * sin(angle);
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}
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vec4 offsets = offsetMatrix * vec4(offsetX, offsetY, 0.0, 0.0);
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gl_Position = u_projectionMatrix * vec4(a_position, 0.0, 1.0) + offsets;
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vec4 texCoord = vec4(0.0, 0.5, 0.5, 1.0);
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float u = a_index == 0.0 || a_index == 3.0 ? texCoord.s : texCoord.p;
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float v = a_index == 2.0 || a_index == 3.0 ? texCoord.t : texCoord.q;
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v_texCoord = vec2(u, v);
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u = a_index == 0.0 || a_index == 3.0 ? 0.0 : 1.0;
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v = a_index == 2.0 || a_index == 3.0 ? 0.0 : 1.0;
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v_quadCoord = vec2(u, v);
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}`);
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});
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it('generates a symbol vertex shader (with rotateWithView)', function() {
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const builder = new ShaderBuilder();
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builder.setSizeExpression(`vec2(${numberToGlsl(6)})`);
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builder.setSymbolOffsetExpression(arrayToGlsl([5, -7]));
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builder.setColorExpression(colorToGlsl([80, 0, 255, 1]));
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builder.setTextureCoordinateExpression(arrayToGlsl([0, 0.5, 0.5, 1]));
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builder.setSymbolRotateWithView(true);
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expect(builder.getSymbolVertexShader()).to.eql(`precision mediump float;
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uniform mat4 u_projectionMatrix;
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uniform mat4 u_offsetScaleMatrix;
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uniform mat4 u_offsetRotateMatrix;
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uniform float u_time;
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uniform float u_zoom;
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uniform float u_resolution;
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attribute vec2 a_position;
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attribute float a_index;
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varying vec2 v_texCoord;
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varying vec2 v_quadCoord;
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void main(void) {
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mat4 offsetMatrix = u_offsetScaleMatrix * u_offsetRotateMatrix;
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vec2 halfSize = vec2(6.0) * 0.5;
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vec2 offset = vec2(5.0, -7.0);
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float angle = 0.0;
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float offsetX;
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float offsetY;
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if (a_index == 0.0) {
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offsetX = (offset.x - halfSize.x) * cos(angle) + (offset.y - halfSize.y) * sin(angle);
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offsetY = (offset.y - halfSize.y) * cos(angle) - (offset.x - halfSize.x) * sin(angle);
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} else if (a_index == 1.0) {
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offsetX = (offset.x + halfSize.x) * cos(angle) + (offset.y - halfSize.y) * sin(angle);
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offsetY = (offset.y - halfSize.y) * cos(angle) - (offset.x + halfSize.x) * sin(angle);
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} else if (a_index == 2.0) {
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offsetX = (offset.x + halfSize.x) * cos(angle) + (offset.y + halfSize.y) * sin(angle);
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offsetY = (offset.y + halfSize.y) * cos(angle) - (offset.x + halfSize.x) * sin(angle);
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} else {
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offsetX = (offset.x - halfSize.x) * cos(angle) + (offset.y + halfSize.y) * sin(angle);
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offsetY = (offset.y + halfSize.y) * cos(angle) - (offset.x - halfSize.x) * sin(angle);
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}
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vec4 offsets = offsetMatrix * vec4(offsetX, offsetY, 0.0, 0.0);
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gl_Position = u_projectionMatrix * vec4(a_position, 0.0, 1.0) + offsets;
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vec4 texCoord = vec4(0.0, 0.5, 0.5, 1.0);
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float u = a_index == 0.0 || a_index == 3.0 ? texCoord.s : texCoord.p;
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float v = a_index == 2.0 || a_index == 3.0 ? texCoord.t : texCoord.q;
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v_texCoord = vec2(u, v);
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u = a_index == 0.0 || a_index == 3.0 ? 0.0 : 1.0;
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v = a_index == 2.0 || a_index == 3.0 ? 0.0 : 1.0;
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v_quadCoord = vec2(u, v);
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}`);
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});
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it('generates a symbol vertex shader for hitDetection', function() {
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const builder = new ShaderBuilder();
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expect(builder.getSymbolVertexShader(true)).to.eql(`precision mediump float;
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uniform mat4 u_projectionMatrix;
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uniform mat4 u_offsetScaleMatrix;
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uniform mat4 u_offsetRotateMatrix;
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uniform float u_time;
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uniform float u_zoom;
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uniform float u_resolution;
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attribute vec2 a_position;
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attribute float a_index;
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attribute vec4 a_hitColor;
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varying vec2 v_texCoord;
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varying vec2 v_quadCoord;
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varying vec4 v_hitColor;
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void main(void) {
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mat4 offsetMatrix = u_offsetScaleMatrix;
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vec2 halfSize = vec2(1.0) * 0.5;
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vec2 offset = vec2(0.0);
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float angle = 0.0;
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float offsetX;
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float offsetY;
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if (a_index == 0.0) {
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offsetX = (offset.x - halfSize.x) * cos(angle) + (offset.y - halfSize.y) * sin(angle);
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offsetY = (offset.y - halfSize.y) * cos(angle) - (offset.x - halfSize.x) * sin(angle);
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} else if (a_index == 1.0) {
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offsetX = (offset.x + halfSize.x) * cos(angle) + (offset.y - halfSize.y) * sin(angle);
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offsetY = (offset.y - halfSize.y) * cos(angle) - (offset.x + halfSize.x) * sin(angle);
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} else if (a_index == 2.0) {
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offsetX = (offset.x + halfSize.x) * cos(angle) + (offset.y + halfSize.y) * sin(angle);
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offsetY = (offset.y + halfSize.y) * cos(angle) - (offset.x + halfSize.x) * sin(angle);
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} else {
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offsetX = (offset.x - halfSize.x) * cos(angle) + (offset.y + halfSize.y) * sin(angle);
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offsetY = (offset.y + halfSize.y) * cos(angle) - (offset.x - halfSize.x) * sin(angle);
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}
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vec4 offsets = offsetMatrix * vec4(offsetX, offsetY, 0.0, 0.0);
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gl_Position = u_projectionMatrix * vec4(a_position, 0.0, 1.0) + offsets;
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vec4 texCoord = vec4(0.0, 0.0, 1.0, 1.0);
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float u = a_index == 0.0 || a_index == 3.0 ? texCoord.s : texCoord.p;
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float v = a_index == 2.0 || a_index == 3.0 ? texCoord.t : texCoord.q;
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v_texCoord = vec2(u, v);
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u = a_index == 0.0 || a_index == 3.0 ? 0.0 : 1.0;
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v = a_index == 2.0 || a_index == 3.0 ? 0.0 : 1.0;
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v_quadCoord = vec2(u, v);
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v_hitColor = a_hitColor;
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}`);
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});
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it('generates a symbol vertex shader (with a rotation expression)', function() {
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const builder = new ShaderBuilder();
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builder.setSizeExpression(`vec2(${numberToGlsl(6)})`);
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builder.setSymbolOffsetExpression(arrayToGlsl([5, -7]));
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builder.setRotationExpression('u_time * 0.2');
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expect(builder.getSymbolVertexShader()).to.eql(`precision mediump float;
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uniform mat4 u_projectionMatrix;
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uniform mat4 u_offsetScaleMatrix;
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uniform mat4 u_offsetRotateMatrix;
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uniform float u_time;
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uniform float u_zoom;
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uniform float u_resolution;
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attribute vec2 a_position;
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attribute float a_index;
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varying vec2 v_texCoord;
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varying vec2 v_quadCoord;
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void main(void) {
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mat4 offsetMatrix = u_offsetScaleMatrix;
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vec2 halfSize = vec2(6.0) * 0.5;
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vec2 offset = vec2(5.0, -7.0);
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float angle = u_time * 0.2;
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float offsetX;
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float offsetY;
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if (a_index == 0.0) {
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offsetX = (offset.x - halfSize.x) * cos(angle) + (offset.y - halfSize.y) * sin(angle);
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offsetY = (offset.y - halfSize.y) * cos(angle) - (offset.x - halfSize.x) * sin(angle);
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} else if (a_index == 1.0) {
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offsetX = (offset.x + halfSize.x) * cos(angle) + (offset.y - halfSize.y) * sin(angle);
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offsetY = (offset.y - halfSize.y) * cos(angle) - (offset.x + halfSize.x) * sin(angle);
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} else if (a_index == 2.0) {
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offsetX = (offset.x + halfSize.x) * cos(angle) + (offset.y + halfSize.y) * sin(angle);
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offsetY = (offset.y + halfSize.y) * cos(angle) - (offset.x + halfSize.x) * sin(angle);
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} else {
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offsetX = (offset.x - halfSize.x) * cos(angle) + (offset.y + halfSize.y) * sin(angle);
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offsetY = (offset.y + halfSize.y) * cos(angle) - (offset.x - halfSize.x) * sin(angle);
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}
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vec4 offsets = offsetMatrix * vec4(offsetX, offsetY, 0.0, 0.0);
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gl_Position = u_projectionMatrix * vec4(a_position, 0.0, 1.0) + offsets;
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vec4 texCoord = vec4(0.0, 0.0, 1.0, 1.0);
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float u = a_index == 0.0 || a_index == 3.0 ? texCoord.s : texCoord.p;
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float v = a_index == 2.0 || a_index == 3.0 ? texCoord.t : texCoord.q;
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v_texCoord = vec2(u, v);
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u = a_index == 0.0 || a_index == 3.0 ? 0.0 : 1.0;
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v = a_index == 2.0 || a_index == 3.0 ? 0.0 : 1.0;
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v_quadCoord = vec2(u, v);
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}`);
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});
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});
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describe('getSymbolFragmentShader', function() {
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it('generates a symbol fragment shader (with varying)', function() {
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const builder = new ShaderBuilder();
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builder.addVarying('v_opacity', 'float', numberToGlsl(0.4));
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builder.addVarying('v_test', 'vec3', arrayToGlsl([1, 2, 3]));
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builder.setSizeExpression(`vec2(${numberToGlsl(6)})`);
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builder.setSymbolOffsetExpression(arrayToGlsl([5, -7]));
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builder.setColorExpression(colorToGlsl([80, 0, 255]));
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builder.setTextureCoordinateExpression(arrayToGlsl([0, 0.5, 0.5, 1]));
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expect(builder.getSymbolFragmentShader()).to.eql(`precision mediump float;
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uniform float u_time;
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uniform float u_zoom;
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uniform float u_resolution;
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varying vec2 v_texCoord;
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varying vec2 v_quadCoord;
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varying float v_opacity;
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varying vec3 v_test;
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void main(void) {
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if (false) { discard; }
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gl_FragColor = vec4(0.3137254901960784, 0.0, 1.0, 1.0);
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gl_FragColor.rgb *= gl_FragColor.a;
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}`);
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});
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it('generates a symbol fragment shader (with uniforms)', function() {
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const builder = new ShaderBuilder();
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builder.addUniform('float u_myUniform');
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builder.addUniform('vec2 u_myUniform2');
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builder.setSizeExpression(`vec2(${numberToGlsl(6)})`);
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builder.setSymbolOffsetExpression(arrayToGlsl([5, -7]));
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builder.setColorExpression(colorToGlsl([255, 255, 255, 1]));
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builder.setTextureCoordinateExpression(arrayToGlsl([0, 0.5, 0.5, 1]));
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builder.setFragmentDiscardExpression('u_myUniform > 0.5');
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expect(builder.getSymbolFragmentShader()).to.eql(`precision mediump float;
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uniform float u_time;
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uniform float u_zoom;
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uniform float u_resolution;
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uniform float u_myUniform;
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uniform vec2 u_myUniform2;
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varying vec2 v_texCoord;
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varying vec2 v_quadCoord;
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void main(void) {
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if (u_myUniform > 0.5) { discard; }
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gl_FragColor = vec4(1.0, 1.0, 1.0, 1.0);
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gl_FragColor.rgb *= gl_FragColor.a;
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}`);
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});
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it('generates a symbol fragment shader for hit detection', function() {
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const builder = new ShaderBuilder();
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expect(builder.getSymbolFragmentShader(true)).to.eql(`precision mediump float;
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uniform float u_time;
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uniform float u_zoom;
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uniform float u_resolution;
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varying vec2 v_texCoord;
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varying vec2 v_quadCoord;
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varying vec4 v_hitColor;
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void main(void) {
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if (false) { discard; }
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gl_FragColor = vec4(1.0);
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gl_FragColor.rgb *= gl_FragColor.a;
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if (gl_FragColor.a < 0.1) { discard; } gl_FragColor = v_hitColor;
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}`);
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});
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});
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describe('parseSymbolStyle', function() {
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it('parses a style without expressions', function() {
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const result = parseLiteralStyle({
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symbol: {
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symbolType: 'square',
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size: [4, 8],
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color: '#ff0000',
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rotateWithView: true
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}
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});
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expect(result.builder.uniforms).to.eql([]);
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expect(result.builder.attributes).to.eql([]);
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expect(result.builder.varyings).to.eql([]);
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expect(result.builder.colorExpression).to.eql(
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'vec4(vec4(1.0, 0.0, 0.0, 1.0).rgb, vec4(1.0, 0.0, 0.0, 1.0).a * 1.0 * 1.0)');
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expect(result.builder.sizeExpression).to.eql('vec2(vec2(4.0, 8.0))');
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expect(result.builder.offsetExpression).to.eql('vec2(0.0, 0.0)');
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expect(result.builder.texCoordExpression).to.eql('vec4(0.0, 0.0, 1.0, 1.0)');
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expect(result.builder.rotateWithView).to.eql(true);
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expect(result.attributes).to.eql([]);
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expect(result.uniforms).to.eql({});
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});
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it('parses a style with expressions', function() {
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const result = parseLiteralStyle({
|
|
symbol: {
|
|
symbolType: 'square',
|
|
size: ['get', 'attr1'],
|
|
color: [255, 127.5, 63.75, 0.25],
|
|
textureCoord: [0.5, 0.5, 0.5, 1],
|
|
offset: ['match', ['get', 'attr3'], 'red', [6, 0], 'green', [3, 0], [0, 0]]
|
|
}
|
|
});
|
|
|
|
expect(result.builder.uniforms).to.eql([]);
|
|
expect(result.builder.attributes).to.eql(['float a_attr1', 'float a_attr3']);
|
|
expect(result.builder.varyings).to.eql([{
|
|
name: 'v_attr1',
|
|
type: 'float',
|
|
expression: 'a_attr1'
|
|
}]);
|
|
expect(result.builder.colorExpression).to.eql(
|
|
'vec4(vec4(1.0, 0.5, 0.25, 0.25).rgb, vec4(1.0, 0.5, 0.25, 0.25).a * 1.0 * 1.0)'
|
|
);
|
|
expect(result.builder.sizeExpression).to.eql('vec2(a_attr1)');
|
|
expect(result.builder.offsetExpression).to.eql('(a_attr3 == 1.0 ? vec2(6.0, 0.0) : (a_attr3 == 0.0 ? vec2(3.0, 0.0) : vec2(0.0, 0.0)))');
|
|
expect(result.builder.texCoordExpression).to.eql('vec4(0.5, 0.5, 0.5, 1.0)');
|
|
expect(result.builder.rotateWithView).to.eql(false);
|
|
expect(result.attributes.length).to.eql(2);
|
|
expect(result.attributes[0].name).to.eql('attr1');
|
|
expect(result.attributes[1].name).to.eql('attr3');
|
|
expect(result.uniforms).to.eql({});
|
|
});
|
|
|
|
it('parses a style with a uniform (texture)', function() {
|
|
const result = parseLiteralStyle({
|
|
symbol: {
|
|
symbolType: 'image',
|
|
src: '../data/image.png',
|
|
size: 6,
|
|
color: '#336699',
|
|
opacity: 0.5
|
|
}
|
|
});
|
|
|
|
expect(result.builder.uniforms).to.eql(['sampler2D u_texture']);
|
|
expect(result.builder.attributes).to.eql([]);
|
|
expect(result.builder.varyings).to.eql([]);
|
|
expect(result.builder.colorExpression).to.eql(
|
|
'vec4(vec4(0.2, 0.4, 0.6, 1.0).rgb, vec4(0.2, 0.4, 0.6, 1.0).a * 0.5 * 1.0) * texture2D(u_texture, v_texCoord)'
|
|
);
|
|
expect(result.builder.sizeExpression).to.eql('vec2(6.0)');
|
|
expect(result.builder.offsetExpression).to.eql('vec2(0.0, 0.0)');
|
|
expect(result.builder.texCoordExpression).to.eql('vec4(0.0, 0.0, 1.0, 1.0)');
|
|
expect(result.builder.rotateWithView).to.eql(false);
|
|
expect(result.attributes).to.eql([]);
|
|
expect(result.uniforms).to.have.property('u_texture');
|
|
});
|
|
|
|
it('parses a style with variables', function() {
|
|
const result = parseLiteralStyle({
|
|
variables: {
|
|
lower: 100,
|
|
higher: 400
|
|
},
|
|
symbol: {
|
|
symbolType: 'square',
|
|
size: ['interpolate', ['linear'], ['get', 'population'], ['var', 'lower'], 4, ['var', 'higher'], 8],
|
|
color: '#336699',
|
|
opacity: 0.5
|
|
}
|
|
});
|
|
|
|
expect(result.builder.uniforms).to.eql(['float u_lower', 'float u_higher']);
|
|
expect(result.builder.attributes).to.eql(['float a_population']);
|
|
expect(result.builder.varyings).to.eql([{
|
|
name: 'v_population',
|
|
type: 'float',
|
|
expression: 'a_population'
|
|
}]);
|
|
expect(result.builder.colorExpression).to.eql(
|
|
'vec4(vec4(0.2, 0.4, 0.6, 1.0).rgb, vec4(0.2, 0.4, 0.6, 1.0).a * 0.5 * 1.0)'
|
|
);
|
|
expect(result.builder.sizeExpression).to.eql(
|
|
'vec2(mix(4.0, 8.0, pow(clamp((a_population - u_lower) / (u_higher - u_lower), 0.0, 1.0), 1.0)))'
|
|
);
|
|
expect(result.builder.offsetExpression).to.eql('vec2(0.0, 0.0)');
|
|
expect(result.builder.texCoordExpression).to.eql('vec4(0.0, 0.0, 1.0, 1.0)');
|
|
expect(result.builder.rotateWithView).to.eql(false);
|
|
expect(result.attributes.length).to.eql(1);
|
|
expect(result.attributes[0].name).to.eql('population');
|
|
expect(result.uniforms).to.have.property('u_lower');
|
|
expect(result.uniforms).to.have.property('u_higher');
|
|
});
|
|
|
|
it('parses a style with a filter', function() {
|
|
const result = parseLiteralStyle({
|
|
filter: ['between', ['get', 'attr0'], 0, 10],
|
|
symbol: {
|
|
symbolType: 'square',
|
|
size: 6,
|
|
color: '#336699'
|
|
}
|
|
});
|
|
|
|
expect(result.builder.attributes).to.eql(['float a_attr0']);
|
|
expect(result.builder.varyings).to.eql([{
|
|
name: 'v_attr0',
|
|
type: 'float',
|
|
expression: 'a_attr0'
|
|
}]);
|
|
expect(result.builder.colorExpression).to.eql(
|
|
'vec4(vec4(0.2, 0.4, 0.6, 1.0).rgb, vec4(0.2, 0.4, 0.6, 1.0).a * 1.0 * 1.0)'
|
|
);
|
|
expect(result.builder.sizeExpression).to.eql('vec2(6.0)');
|
|
expect(result.builder.offsetExpression).to.eql('vec2(0.0, 0.0)');
|
|
expect(result.builder.texCoordExpression).to.eql('vec4(0.0, 0.0, 1.0, 1.0)');
|
|
expect(result.builder.discardExpression).to.eql('!(v_attr0 >= 0.0 && v_attr0 <= 10.0)');
|
|
expect(result.builder.rotateWithView).to.eql(false);
|
|
expect(result.attributes.length).to.eql(1);
|
|
expect(result.attributes[0].name).to.eql('attr0');
|
|
});
|
|
|
|
it('parses a style with a color interpolation', function() {
|
|
const result = parseLiteralStyle({
|
|
symbol: {
|
|
symbolType: 'square',
|
|
size: 6,
|
|
color: ['interpolate', ['linear'], ['var', 'ratio'], 0, [255, 255, 0], 1, 'red']
|
|
}
|
|
});
|
|
|
|
expect(result.builder.attributes).to.eql([]);
|
|
expect(result.builder.varyings).to.eql([]);
|
|
expect(result.builder.colorExpression).to.eql(
|
|
'vec4(mix(vec4(1.0, 1.0, 0.0, 1.0), vec4(1.0, 0.0, 0.0, 1.0), pow(clamp((u_ratio - 0.0) / (1.0 - 0.0), 0.0, 1.0), 1.0)).rgb, mix(vec4(1.0, 1.0, 0.0, 1.0), vec4(1.0, 0.0, 0.0, 1.0), pow(clamp((u_ratio - 0.0) / (1.0 - 0.0), 0.0, 1.0), 1.0)).a * 1.0 * 1.0)'
|
|
);
|
|
expect(result.builder.sizeExpression).to.eql('vec2(6.0)');
|
|
expect(result.builder.offsetExpression).to.eql('vec2(0.0, 0.0)');
|
|
expect(result.builder.texCoordExpression).to.eql('vec4(0.0, 0.0, 1.0, 1.0)');
|
|
expect(result.builder.rotateWithView).to.eql(false);
|
|
expect(result.attributes).to.eql([]);
|
|
expect(result.uniforms).to.have.property('u_ratio');
|
|
});
|
|
|
|
it('parses a style with a rotation expression using an attribute', function() {
|
|
const result = parseLiteralStyle({
|
|
symbol: {
|
|
symbolType: 'square',
|
|
size: 6,
|
|
rotation: ['get', 'heading']
|
|
}
|
|
});
|
|
|
|
expect(result.builder.attributes).to.eql(['float a_heading']);
|
|
expect(result.builder.varyings).to.eql([]);
|
|
expect(result.builder.rotationExpression).to.eql('a_heading');
|
|
});
|
|
|
|
it('correctly adds string variables to the string literals mapping', function() {
|
|
const result = parseLiteralStyle({
|
|
variables: {
|
|
mySize: 'abcdef'
|
|
},
|
|
symbol: {
|
|
symbolType: 'square',
|
|
size: ['match', ['var', 'mySize'], 'abc', 10, 'def', 20, 30],
|
|
color: 'red'
|
|
}
|
|
});
|
|
|
|
expect(result.uniforms['u_mySize']()).to.be.greaterThan(0);
|
|
});
|
|
|
|
it('throws when a variable is requested but not present in the style', function(done) {
|
|
const result = parseLiteralStyle({
|
|
variables: {},
|
|
symbol: {
|
|
symbolType: 'square',
|
|
size: ['var', 'mySize'],
|
|
color: 'red'
|
|
}
|
|
});
|
|
|
|
try {
|
|
result.uniforms['u_mySize']();
|
|
} catch (e) {
|
|
done();
|
|
}
|
|
done(true);
|
|
});
|
|
|
|
it('throws when a variable is requested but the style does not have a variables dict', function(done) {
|
|
const result = parseLiteralStyle({
|
|
symbol: {
|
|
symbolType: 'square',
|
|
size: ['var', 'mySize'],
|
|
color: 'red'
|
|
}
|
|
});
|
|
|
|
try {
|
|
result.uniforms['u_mySize']();
|
|
} catch (e) {
|
|
done();
|
|
}
|
|
done(true);
|
|
});
|
|
});
|
|
|
|
});
|