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LibWeb: Implement GLES2 context creation

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For now only macOS is supported.

IOSurface is used as a backing store because it will allow us to read
it from Skia and write to it from OpenGL without any extra copying:
- ANGLE_metal_texture_client_buffer extension is used to create
  EGLSurface from IOSurface.
- Then the same IOSurface is wrapped into Metal texture and passed to
  Skia allowing to share the same memory between Skia Metal backend and
  ANGLE.
This commit is contained in:
Aliaksandr Kalenik 2024-11-29 22:15:02 +01:00 • committed by Alexander Kalenik
commit 38488b9ef3
Notes: github-actions[bot] 2024-12-03 22:37:28 +00:00
5 changed files with 223 additions and 19 deletions
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25
Libraries/LibWeb/WebGL/OpenGLContext.h
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@ -6,19 +6,34 @@
#pragma once
#include <LibGfx/Bitmap.h>
#include <LibWeb/WebGL/Types.h>
#include <LibGfx/Forward.h>
#include <LibGfx/Size.h>
namespace Web::WebGL {
class OpenGLContext {
public:
static OwnPtr<OpenGLContext> create();
static OwnPtr<OpenGLContext> create(NonnullRefPtr<Gfx::SkiaBackendContext>);
virtual void present() = 0;
void clear_buffer_to_default_values();
void allocate_painting_surface_if_needed();
virtual ~OpenGLContext() { }
struct Impl;
OpenGLContext(NonnullRefPtr<Gfx::SkiaBackendContext>, Impl);
~OpenGLContext();
void make_current();
void set_size(Gfx::IntSize const&);
RefPtr<Gfx::PaintingSurface> surface();
private:
NonnullRefPtr<Gfx::SkiaBackendContext> m_skia_backend_context;
Gfx::IntSize m_size;
RefPtr<Gfx::PaintingSurface> m_painting_surface;
NonnullOwnPtr<Impl> m_impl;
};
}