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[HTML5] Implement WebGL fallback.

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According to project settings and when WebGL2 is not available.
This does nothing in current master, as we have no rendering yet!
This commit is contained in:
Fabio Alessandrelli 2021-04-06 12:46:33 +02:00
parent 45f0b5db28
commit 34fd48f68d
2 changed files with 12 additions and 0 deletions
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1
platform/javascript/godot_js.h
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@ -71,6 +71,7 @@ extern int godot_js_display_fullscreen_exit();
extern void godot_js_display_compute_position(int p_x, int p_y, int32_t *r_x, int32_t *r_y); extern void godot_js_display_compute_position(int p_x, int p_y, int32_t *r_x, int32_t *r_y);
extern void godot_js_display_window_title_set(const char *p_text); extern void godot_js_display_window_title_set(const char *p_text);
extern void godot_js_display_window_icon_set(const uint8_t *p_ptr, int p_len); extern void godot_js_display_window_icon_set(const uint8_t *p_ptr, int p_len);
extern int godot_js_display_has_webgl(int p_version);
// Display clipboard // Display clipboard
extern int godot_js_display_clipboard_set(const char *p_text); extern int godot_js_display_clipboard_set(const char *p_text);

11
platform/javascript/js/libs/library_godot_display.js
View file

@ -719,6 +719,17 @@ const GodotDisplay = {
GodotRuntime.setHeapValue(r_y, (y - rect.y) * rh, 'i32'); GodotRuntime.setHeapValue(r_y, (y - rect.y) * rh, 'i32');
}, },
godot_js_display_has_webgl__sig: 'ii',
godot_js_display_has_webgl: function (p_version) {
if (p_version !== 1 && p_version !== 2) {
return false;
}
try {
return !!document.createElement('canvas').getContext(p_version === 2 ? 'webgl2' : 'webgl');
} catch (e) { /* Not available */ }
return false;
},
/* /*
* Canvas * Canvas
*/ */