mirror of
https://github.com/RGBCube/serenity
synced 2025-06-01 00:28:11 +00:00
1e85bf221d
In the upcoming changes, Painter will be used to store the state of OpenGL context. For example, if Painter is aware of the shader that have already been loaded, it will be possible to reuse them across repaints. Also, it would be possible to manage state of loaded textures and add/remove them depending on which ones are present in the next sequence of painting commands.
81 lines
2 KiB
C++
81 lines
2 KiB
C++
/*
|
|
* Copyright (c) 2023, Aliaksandr Kalenik <kalenik.aliaksandr@gmail.com>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#include <LibAccelGfx/Context.h>
|
|
|
|
namespace AccelGfx {
|
|
|
|
Context& Context::the()
|
|
{
|
|
static OwnPtr<Context> s_the;
|
|
if (!s_the)
|
|
s_the = Context::create();
|
|
return *s_the;
|
|
}
|
|
|
|
Context::Surface Context::create_surface(int width, int height)
|
|
{
|
|
EGLint const pbuffer_attributes[] = {
|
|
EGL_WIDTH,
|
|
width,
|
|
EGL_HEIGHT,
|
|
height,
|
|
EGL_NONE,
|
|
};
|
|
|
|
auto egl_surface = eglCreatePbufferSurface(m_egl_display, m_egl_config, pbuffer_attributes);
|
|
return { egl_surface };
|
|
}
|
|
|
|
void Context::destroy_surface(Surface surface)
|
|
{
|
|
if (surface.egl_surface)
|
|
eglDestroySurface(m_egl_display, surface.egl_surface);
|
|
}
|
|
|
|
void Context::set_active_surface(Surface surface)
|
|
{
|
|
VERIFY(eglMakeCurrent(m_egl_display, surface.egl_surface, surface.egl_surface, m_egl_context));
|
|
}
|
|
|
|
OwnPtr<Context> Context::create()
|
|
{
|
|
EGLDisplay egl_display = eglGetDisplay(EGL_DEFAULT_DISPLAY);
|
|
|
|
EGLint major;
|
|
EGLint minor;
|
|
eglInitialize(egl_display, &major, &minor);
|
|
|
|
static EGLint const config_attributes[] = {
|
|
EGL_SURFACE_TYPE, EGL_PBUFFER_BIT,
|
|
EGL_BLUE_SIZE, 8,
|
|
EGL_GREEN_SIZE, 8,
|
|
EGL_RED_SIZE, 8,
|
|
EGL_DEPTH_SIZE, 8,
|
|
EGL_RENDERABLE_TYPE, EGL_OPENGL_BIT,
|
|
EGL_NONE
|
|
};
|
|
|
|
EGLConfig egl_config;
|
|
EGLint num_configs;
|
|
eglChooseConfig(egl_display, config_attributes, &egl_config, 1, &num_configs);
|
|
|
|
static EGLint const context_attributes[] = {
|
|
EGL_CONTEXT_CLIENT_VERSION, 2,
|
|
EGL_NONE
|
|
};
|
|
EGLContext egl_context = eglCreateContext(egl_display, egl_config, EGL_NO_CONTEXT, context_attributes);
|
|
|
|
EGLBoolean result = eglMakeCurrent(egl_display, EGL_NO_SURFACE, EGL_NO_SURFACE, egl_context);
|
|
if (result == EGL_FALSE) {
|
|
dbgln("eglMakeCurrent failed");
|
|
VERIFY_NOT_REACHED();
|
|
}
|
|
|
|
return make<Context>(egl_display, egl_context, egl_config);
|
|
}
|
|
|
|
}
|