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Added missing attributes in PointsLayer

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Attributes were used in the shader but not bound to a buffer, which made the
rendering failed in some implementations.
This commit is contained in:
jahow
2018-12-01 00:01:52 +01:00
parent 171f1a5bac
commit 78028893e2
2 changed files with 20 additions and 10 deletions
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6
src/ol/layer/Heatmap.js
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@@ -205,6 +205,7 @@ class Heatmap extends VectorLayer {
attribute vec2 a_texCoord;
attribute float a_rotateWithView;
attribute vec2 a_offsets;
attribute float a_opacity;
uniform mat4 u_projectionMatrix;
uniform mat4 u_offsetScaleMatrix;
@@ -212,6 +213,7 @@ class Heatmap extends VectorLayer {
uniform float u_size;
varying vec2 v_texCoord;
varying float v_opacity;
void main(void) {
mat4 offsetMatrix = u_offsetScaleMatrix;
@@ -221,6 +223,7 @@ class Heatmap extends VectorLayer {
vec4 offsets = offsetMatrix * vec4(a_offsets, 0.0, 0.0);
gl_Position = u_projectionMatrix * vec4(a_position, 0.0, 1.0) + offsets * u_size;
v_texCoord = a_texCoord;
v_opacity = a_opacity;
}`,
fragmentShader: `
precision mediump float;
@@ -229,12 +232,13 @@ class Heatmap extends VectorLayer {
uniform float u_blur;
varying vec2 v_texCoord;
varying float v_opacity;
void main(void) {
gl_FragColor.rgb = vec3(1.0, 1.0, 1.0);
vec2 texCoord = v_texCoord * 2.0 - vec2(1.0, 1.0);
float sqRadius = texCoord.x * texCoord.x + texCoord.y * texCoord.y;
float alpha = 1.0 - sqRadius * sqRadius;
float alpha = 1.0 - sqRadius * sqRadius * v_opacity;
if (alpha <= 0.0) {
discard;
}