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Webgl / add support for a time operator in literal styles

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This required adding `u_time` as one of the default uniforms provided by the
webgl helper.
This commit is contained in:
Olivier Guyot
2019-10-22 13:39:07 +02:00
parent 0c0c8c5d56
commit 94b8cf6af3
4 changed files with 31 additions and 6 deletions
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6
test/spec/ol/webgl/shaderbuilder.test.js
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@@ -45,6 +45,7 @@ describe('ol.webgl.ShaderBuilder', function() {
uniform mat4 u_projectionMatrix;
uniform mat4 u_offsetScaleMatrix;
uniform mat4 u_offsetRotateMatrix;
uniform float u_time;
attribute vec2 a_position;
attribute float a_index;
@@ -85,6 +86,7 @@ void main(void) {
uniform mat4 u_projectionMatrix;
uniform mat4 u_offsetScaleMatrix;
uniform mat4 u_offsetRotateMatrix;
uniform float u_time;
uniform float u_myUniform;
attribute vec2 a_position;
attribute float a_index;
@@ -122,6 +124,7 @@ void main(void) {
uniform mat4 u_projectionMatrix;
uniform mat4 u_offsetScaleMatrix;
uniform mat4 u_offsetRotateMatrix;
uniform float u_time;
attribute vec2 a_position;
attribute float a_index;
@@ -160,6 +163,7 @@ void main(void) {
builder.setTextureCoordinateExpression('vec4(' + formatArray([0, 0.5, 0.5, 1]) + ')');
expect(builder.getSymbolFragmentShader()).to.eql(`precision mediump float;
uniform float u_time;
varying vec2 v_texCoord;
varying vec2 v_quadCoord;
@@ -182,6 +186,7 @@ void main(void) {
builder.setFragmentDiscardExpression('u_myUniform > 0.5');
expect(builder.getSymbolFragmentShader()).to.eql(`precision mediump float;
uniform float u_time;
uniform float u_myUniform;
uniform vec2 u_myUniform2;
varying vec2 v_texCoord;
@@ -209,6 +214,7 @@ void main(void) {
it('parses expressions & literal values', function() {
expect(parseFn(1)).to.eql('1.0');
expect(parseFn(['get', 'myAttr'])).to.eql('a_myAttr');
expect(parseFn(['time'])).to.eql('u_time');
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)');