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authorMatthias Schiffer <mschiffer@universe-factory.net>2018-10-31 14:40:20 +0100
committerMatthias Schiffer <mschiffer@universe-factory.net>2018-10-31 14:40:20 +0100
commitda3e93a942f7e01d3d26b48d403ba091667d1404 (patch)
tree81a6b64628cdb09f90fa7865734890fd8c9f494b /src/view/util
parentaf04cbe3592656cf6981232550a460f1b10e2560 (diff)
downloadrpgedit-da3e93a942f7e01d3d26b48d403ba091667d1404.tar
rpgedit-da3e93a942f7e01d3d26b48d403ba091667d1404.zip
view: more refactoring
Diffstat (limited to 'src/view/util')
-rw-r--r--src/view/util/image.ts29
1 files changed, 29 insertions, 0 deletions
diff --git a/src/view/util/image.ts b/src/view/util/image.ts
new file mode 100644
index 0000000..50debde
--- /dev/null
+++ b/src/view/util/image.ts
@@ -0,0 +1,29 @@
+import { mapValuesAsync } from '../../util';
+
+export function loadImage(url: string): Promise<HTMLImageElement> {
+ return new Promise((resolve, reject) => {
+ const img = new Image();
+ img.addEventListener('load', () => { resolve(img); });
+ img.addEventListener('error', () => { reject(new Error('failed to load ' + url)); });
+ img.src = url;
+ });
+}
+
+export function loadImages(urls: Map<string, string>): Promise<Map<string, HTMLImageElement>> {
+ return mapValuesAsync(loadImage, urls);
+}
+
+export function mkTexture(gl: WebGLRenderingContext, src: HTMLCanvasElement|HTMLImageElement): WebGLTexture {
+ const texture = gl.createTexture();
+ if (!texture)
+ throw new Error('unable to create texture');
+
+ gl.bindTexture(gl.TEXTURE_2D, texture);
+ gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, src);
+ gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
+ gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
+ gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST);
+ gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST);
+
+ return texture;
+}