mirror of
https://github.com/RGBCube/serenity
synced 2025-05-28 13:45:07 +00:00
0ec8a19a34
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.
95 lines
3.3 KiB
C++
95 lines
3.3 KiB
C++
/*
|
|
* Copyright (c) 2022, Luke Wilde <lukew@serenityos.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <AK/RefCountForwarder.h>
|
|
#include <AK/WeakPtr.h>
|
|
#include <AK/Weakable.h>
|
|
#include <LibGL/GLContext.h>
|
|
#include <LibWeb/Forward.h>
|
|
#include <LibWeb/WebGL/WebGLContextAttributes.h>
|
|
|
|
namespace Web::WebGL {
|
|
|
|
class WebGLRenderingContextBase
|
|
: public RefCountForwarder<HTML::HTMLCanvasElement>
|
|
, public Weakable<WebGLRenderingContextBase> {
|
|
public:
|
|
virtual ~WebGLRenderingContextBase();
|
|
|
|
void present();
|
|
|
|
bool is_context_lost() const;
|
|
|
|
Optional<Vector<String>> get_supported_extensions() const;
|
|
JS::Object* get_extension(String const& name) const;
|
|
|
|
void active_texture(GLenum texture);
|
|
|
|
void clear(GLbitfield mask);
|
|
void clear_color(GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha);
|
|
void clear_depth(GLclampf depth);
|
|
void clear_stencil(GLint s);
|
|
void color_mask(GLboolean red, GLboolean green, GLboolean blue, GLboolean alpha);
|
|
|
|
void cull_face(GLenum mode);
|
|
|
|
void depth_func(GLenum func);
|
|
void depth_mask(GLboolean mask);
|
|
void depth_range(GLclampf z_near, GLclampf z_far);
|
|
|
|
void finish();
|
|
void flush();
|
|
|
|
void front_face(GLenum mode);
|
|
|
|
GLenum get_error();
|
|
|
|
void line_width(GLfloat width);
|
|
void polygon_offset(GLfloat factor, GLfloat units);
|
|
|
|
void scissor(GLint x, GLint y, GLsizei width, GLsizei height);
|
|
|
|
void stencil_op(GLenum fail, GLenum zfail, GLenum zpass);
|
|
void stencil_op_separate(GLenum face, GLenum fail, GLenum zfail, GLenum zpass);
|
|
|
|
void viewport(GLint x, GLint y, GLsizei width, GLsizei height);
|
|
|
|
protected:
|
|
WebGLRenderingContextBase(HTML::HTMLCanvasElement& canvas_element, NonnullOwnPtr<GL::GLContext> context, WebGLContextAttributes context_creation_parameters, WebGLContextAttributes actual_context_parameters);
|
|
|
|
private:
|
|
NonnullOwnPtr<GL::GLContext> m_context;
|
|
|
|
// https://www.khronos.org/registry/webgl/specs/latest/1.0/#context-creation-parameters
|
|
// Each WebGLRenderingContext has context creation parameters, set upon creation, in a WebGLContextAttributes object.
|
|
WebGLContextAttributes m_context_creation_parameters {};
|
|
|
|
// https://www.khronos.org/registry/webgl/specs/latest/1.0/#actual-context-parameters
|
|
// Each WebGLRenderingContext has actual context parameters, set each time the drawing buffer is created, in a WebGLContextAttributes object.
|
|
WebGLContextAttributes m_actual_context_parameters {};
|
|
|
|
// https://www.khronos.org/registry/webgl/specs/latest/1.0/#webgl-context-lost-flag
|
|
// Each WebGLRenderingContext has a webgl context lost flag, which is initially unset.
|
|
bool m_context_lost { false };
|
|
|
|
// WebGL presents its drawing buffer to the HTML page compositor immediately before a compositing operation, but only if at least one of the following has occurred since the previous compositing operation:
|
|
// - Context creation
|
|
// - Canvas resize
|
|
// - clear, drawArrays, or drawElements has been called while the drawing buffer is the currently bound framebuffer
|
|
bool m_should_present { true };
|
|
|
|
GLenum m_error { GL_NO_ERROR };
|
|
|
|
HTML::HTMLCanvasElement& canvas_element();
|
|
HTML::HTMLCanvasElement const& canvas_element() const;
|
|
|
|
void needs_to_present();
|
|
void set_error(GLenum error);
|
|
};
|
|
|
|
}
|