ashatora/openlayers
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Better handle uniform locations in shaders

Browse Source
This commit is contained in:
Olivier Guyot
2018-11-14 14:02:09 +01:00
parent 66efee9e22
commit fc20dc986c
2 changed files with 77 additions and 50 deletions
Download Patch File Download Diff File Expand all files Collapse all files

82
src/ol/renderer/webgl-new/PointsLayer.js
View File

@@ -8,46 +8,46 @@ import WebGLContext, {DefaultUniform} from '../../webgl/Context';
import WebGLVertex from "../../webgl/Vertex";
import WebGLFragment from "../../webgl/Fragment";
const VERTEX_SHADER =
'attribute vec2 a_position;' +
'attribute vec2 a_texCoord;' +
'attribute float a_opacity;' +
'attribute float a_rotateWithView;' +
'' +
'uniform mat4 u_projectionMatrix;' +
'uniform mat4 u_offsetScaleMatrix;' +
'uniform mat4 u_offsetRotateMatrix;' +
'' +
'varying vec2 v_texCoord;' +
'varying float v_opacity;' +
'' +
'void main(void) {' +
' mat4 offsetMatrix = u_offsetScaleMatrix;' +
' if (a_rotateWithView == 1.0) {' +
' offsetMatrix = u_offsetScaleMatrix * u_offsetRotateMatrix;' +
' }' +
' vec4 offsets = offsetMatrix * vec4(a_offsets, 0.0, 0.0);' +
' gl_Position = u_projectionMatrix * vec4(a_position, 0.0, 1.0) + offsets;' +
' v_texCoord = a_texCoord;' +
' v_opacity = a_opacity;' +
'}';
const VERTEX_SHADER = `
attribute vec2 a_position;
attribute vec2 a_texCoord;
attribute float a_opacity;
attribute float a_rotateWithView;
uniform mat4 u_projectionMatrix;
uniform mat4 u_offsetScaleMatrix;
uniform mat4 u_offsetRotateMatrix;
varying vec2 v_texCoord;
varying float v_opacity;
void main(void) {
mat4 offsetMatrix = u_offsetScaleMatrix;
if (a_rotateWithView == 1.0) {
offsetMatrix = u_offsetScaleMatrix * u_offsetRotateMatrix;
}
vec4 offsets = offsetMatrix * vec4(a_offsets, 0.0, 0.0);
gl_Position = u_projectionMatrix * vec4(a_position, 0.0, 1.0) + offsets;
v_texCoord = a_texCoord;
v_opacity = a_opacity;
}`;
const FRAGMENT_SHADER =
'uniform float u_opacity;' +
'uniform sampler2D u_image;' +
'' +
'varying vec2 v_texCoord;' +
'varying float v_opacity;' +
'' +
'void main(void) {' +
' vec4 texColor = texture2D(u_image, v_texCoord);' +
' gl_FragColor.rgb = texColor.rgb;' +
' float alpha = texColor.a * v_opacity * u_opacity;' +
' if (alpha == 0.0) {' +
' discard;' +
' }' +
' gl_FragColor.a = alpha;' +
'}';
const FRAGMENT_SHADER = `
uniform float u_opacity;
uniform sampler2D u_image;
varying vec2 v_texCoord;
varying float v_opacity;
void main(void) {
vec4 texColor = texture2D(u_image, v_texCoord);
gl_FragColor.rgb = texColor.rgb;
float alpha = texColor.a * v_opacity * u_opacity;
if (alpha == 0.0) {
discard;
}
gl_FragColor.a = alpha;
}`;
/**
* @classdesc
@@ -100,8 +100,8 @@ class WebGLPointsLayerRenderer extends LayerRenderer {
* @inheritDoc
*/
prepareFrame(frameState) {
const vectorLayer = this.getLayer();
const vectorSource = vectorLayer.getSource();
const vectorLayer = /** @type {import("../../layer/Vector.js").default} */ (this.getLayer());
const vectorSource = /** @type {import("../../source/Vector.js").default} */ (vectorLayer.getSource());
if (this.sourceRevision_ >= vectorSource.getRevision()) {
return false;