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#include "webgl_context.h"
#include <cstdio>
EM_BOOL onResize(int eventType, const EmscriptenUiEvent *uiEvent,
void *userData) {
WebglContext *context = (WebglContext *)userData;
f64 inWidth, inHeight;
emscripten_get_element_css_size(context->query, &inWidth, &inHeight);
context->width = static_cast<f32>(inWidth);
context->height = static_cast<f32>(inHeight);
emscripten_set_canvas_element_size(context->query, context->width, context->height);
return true;
}
void WebglContext::init(const char *inQuery) {
strcpy(query, inQuery);
f64 inWidth, inHeight;
emscripten_get_element_css_size(query, &inWidth, &inHeight);
width = static_cast<f32>(inWidth);
height = static_cast<f32>(inHeight);
emscripten_set_canvas_element_size(query, width, height);
EmscriptenWebGLContextAttributes attrs;
emscripten_webgl_init_context_attributes(&attrs);
attrs.enableExtensionsByDefault = 1;
attrs.majorVersion = 3;
attrs.minorVersion = 0;
context = emscripten_webgl_create_context(query, &attrs);
makeCurrentContext();
glClearColor(0, 0, 0, 0.0f);
emscripten_set_resize_callback(EMSCRIPTEN_EVENT_TARGET_WINDOW, this, false,
onResize);
};
void WebglContext::makeCurrentContext() {
emscripten_webgl_make_context_current(context);
};
void WebglContext::destroy() { emscripten_webgl_destroy_context(context); }
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