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Merge pull request #10684 from jellyedwards/master

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perf: only do expensive reload when texture changes
This commit is contained in:
Olivier Guyot
2020-02-17 13:26:46 +01:00
committed by GitHub
parent e81721cada 8fe71bbbff
commit bf38796ec7
1 changed files with 3 additions and 1 deletions
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4
src/ol/webgl/Helper.js
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@@ -558,6 +558,7 @@ class WebGLHelper extends Disposable {
if (value instanceof HTMLCanvasElement || value instanceof HTMLImageElement || value instanceof ImageData) {
// create a texture & put data
if (!uniform.texture) {
uniform.prevValue = undefined;
uniform.texture = gl.createTexture();
}
gl.activeTexture(gl[`TEXTURE${textureSlot}`]);
@@ -567,7 +568,8 @@ class WebGLHelper extends Disposable {
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
const imageReady = !(value instanceof HTMLImageElement) || /** @type {HTMLImageElement} */(value).complete;
if (imageReady) {
if (imageReady && uniform.prevValue !== value) {
uniform.prevValue = value;
gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, value);
}