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LibWeb/WebGL: Forward the render context ref count to HTMLCanvasElement

This allows HTMLCanvasElement and WebGL rendering contexts to share
their lifetime, as JS allows them to arbitrarily access them at any
time and WebGLRCB.canvas expects a non-null return value.
This commit is contained in:
Luke Wilde 2022-06-19 19:45:33 +01:00 committed by Linus Groh
parent adf8341c4e
commit 0ec8a19a34
2 changed files with 18 additions and 9 deletions

View file

@ -12,7 +12,7 @@
namespace Web::WebGL { namespace Web::WebGL {
WebGLRenderingContextBase::WebGLRenderingContextBase(HTML::HTMLCanvasElement& canvas_element, NonnullOwnPtr<GL::GLContext> context, WebGLContextAttributes context_creation_parameters, WebGLContextAttributes actual_context_parameters) WebGLRenderingContextBase::WebGLRenderingContextBase(HTML::HTMLCanvasElement& canvas_element, NonnullOwnPtr<GL::GLContext> context, WebGLContextAttributes context_creation_parameters, WebGLContextAttributes actual_context_parameters)
: m_canvas_element(canvas_element) : RefCountForwarder(canvas_element)
, m_context(move(context)) , m_context(move(context))
, m_context_creation_parameters(move(context_creation_parameters)) , m_context_creation_parameters(move(context_creation_parameters))
, m_actual_context_parameters(move(actual_context_parameters)) , m_actual_context_parameters(move(actual_context_parameters))
@ -67,15 +67,23 @@ void WebGLRenderingContextBase::present()
} }
} }
HTML::HTMLCanvasElement& WebGLRenderingContextBase::canvas_element()
{
return ref_count_target();
}
HTML::HTMLCanvasElement const& WebGLRenderingContextBase::canvas_element() const
{
return ref_count_target();
}
void WebGLRenderingContextBase::needs_to_present() void WebGLRenderingContextBase::needs_to_present()
{ {
m_should_present = true; m_should_present = true;
if (!m_canvas_element) if (!canvas_element().layout_node())
return; return;
if (!m_canvas_element->layout_node()) canvas_element().layout_node()->set_needs_display();
return;
m_canvas_element->layout_node()->set_needs_display();
} }
void WebGLRenderingContextBase::set_error(GLenum error) void WebGLRenderingContextBase::set_error(GLenum error)

View file

@ -6,7 +6,7 @@
#pragma once #pragma once
#include <AK/RefCounted.h> #include <AK/RefCountForwarder.h>
#include <AK/WeakPtr.h> #include <AK/WeakPtr.h>
#include <AK/Weakable.h> #include <AK/Weakable.h>
#include <LibGL/GLContext.h> #include <LibGL/GLContext.h>
@ -16,7 +16,7 @@
namespace Web::WebGL { namespace Web::WebGL {
class WebGLRenderingContextBase class WebGLRenderingContextBase
: public RefCounted<WebGLRenderingContextBase> : public RefCountForwarder<HTML::HTMLCanvasElement>
, public Weakable<WebGLRenderingContextBase> { , public Weakable<WebGLRenderingContextBase> {
public: public:
virtual ~WebGLRenderingContextBase(); virtual ~WebGLRenderingContextBase();
@ -63,8 +63,6 @@ protected:
WebGLRenderingContextBase(HTML::HTMLCanvasElement& canvas_element, NonnullOwnPtr<GL::GLContext> context, WebGLContextAttributes context_creation_parameters, WebGLContextAttributes actual_context_parameters); WebGLRenderingContextBase(HTML::HTMLCanvasElement& canvas_element, NonnullOwnPtr<GL::GLContext> context, WebGLContextAttributes context_creation_parameters, WebGLContextAttributes actual_context_parameters);
private: private:
WeakPtr<HTML::HTMLCanvasElement> m_canvas_element;
NonnullOwnPtr<GL::GLContext> m_context; NonnullOwnPtr<GL::GLContext> m_context;
// https://www.khronos.org/registry/webgl/specs/latest/1.0/#context-creation-parameters // https://www.khronos.org/registry/webgl/specs/latest/1.0/#context-creation-parameters
@ -87,6 +85,9 @@ private:
GLenum m_error { GL_NO_ERROR }; GLenum m_error { GL_NO_ERROR };
HTML::HTMLCanvasElement& canvas_element();
HTML::HTMLCanvasElement const& canvas_element() const;
void needs_to_present(); void needs_to_present();
void set_error(GLenum error); void set_error(GLenum error);
}; };