- Switched to SDL for main branch, will revisit custom implementation later.
This commit is contained in:
@@ -1,166 +0,0 @@
|
||||
// =====================================================================================================================
|
||||
// fennec, a free and open source game engine
|
||||
// Copyright © 2025 Medusa Slockbower
|
||||
//
|
||||
// This program is free software: you can redistribute it and/or modify
|
||||
// it under the terms of the GNU General Public License as published by
|
||||
// the Free Software Foundation, either version 3 of the License, or
|
||||
// (at your option) any later version.
|
||||
//
|
||||
// This program is distributed in the hope that it will be useful,
|
||||
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
// GNU General Public License for more details.
|
||||
//
|
||||
// You should have received a copy of the GNU General Public License
|
||||
// along with this program. If not, see <https://www.gnu.org/licenses/>.
|
||||
// =====================================================================================================================
|
||||
|
||||
#include <fennec/langproc/filesystem/file.h>
|
||||
#include <fennec/lang/startup.h>
|
||||
#include <fennec/platform/interface/display.h>
|
||||
#include <fennec/platform/interface/platform.h>
|
||||
#include <fennec/platform/opengl/egl/context.h>
|
||||
#include <fennec/platform/opengl/egl/surface.h>
|
||||
|
||||
#include <GL/gl.h>
|
||||
|
||||
namespace fennec
|
||||
{
|
||||
|
||||
static gfxcontext* _create_egl_context(display* display) {
|
||||
eglcontext* ctx = new eglcontext(display);
|
||||
if (not ctx->connected()) {
|
||||
delete ctx, ctx = nullptr;
|
||||
}
|
||||
return ctx;
|
||||
}
|
||||
|
||||
STATIC_CONSTRUCTOR(_egl_init) {
|
||||
platform::add_driver(_create_egl_context, 1);
|
||||
}
|
||||
|
||||
eglcontext::eglcontext(display* display)
|
||||
: gfxcontext(display, "EGL", this)
|
||||
, _egldisplay(nullptr), _eglcontext(nullptr)
|
||||
, _eglconfig(), _eglvmajor(0), _eglvminor(0)
|
||||
, _eglctype(0), _extensions(nullptr) {
|
||||
|
||||
// Get the display format
|
||||
const display::pixel_format& fmt = _display->get_color_format();
|
||||
|
||||
// Currently empty
|
||||
EGLint context_attrs[] = {
|
||||
EGL_NONE
|
||||
};
|
||||
|
||||
// Configure the depth and rgb bit-depth
|
||||
EGLint config_attrs[] = {
|
||||
EGL_SURFACE_TYPE,
|
||||
EGL_WINDOW_BIT,
|
||||
EGL_DEPTH_SIZE, fmt.depth,
|
||||
EGL_RED_SIZE, fmt.r,
|
||||
EGL_RED_SIZE, fmt.g,
|
||||
EGL_RED_SIZE, fmt.b,
|
||||
|
||||
EGL_RENDERABLE_TYPE,
|
||||
EGL_OPENGL_BIT, // 7
|
||||
EGL_NONE
|
||||
};
|
||||
|
||||
// Attempt to retrieve an egl display from the native display
|
||||
_egldisplay = eglGetDisplay(_display->get_native_handle());
|
||||
if (_egldisplay == nullptr) {
|
||||
cleanup();
|
||||
return;
|
||||
}
|
||||
|
||||
// Attempt to initialize egl
|
||||
if (not eglInitialize(_egldisplay, nullptr, nullptr)) {
|
||||
cleanup();
|
||||
return;
|
||||
}
|
||||
|
||||
// Attempt to bind to Core OpenGL, otherwise OpenGL ES
|
||||
if (not eglBindAPI(EGL_OPENGL_API)) {
|
||||
if (not eglBindAPI(EGL_OPENGL_ES_API)) {
|
||||
cleanup();
|
||||
return;
|
||||
}
|
||||
config_attrs[7] = EGL_OPENGL_ES_BIT; // Change the support bit to OpenGL ES
|
||||
}
|
||||
|
||||
// Select a configuration
|
||||
EGLint n;
|
||||
if (not eglChooseConfig(_egldisplay, config_attrs, &_eglconfig, 1, &n)) {
|
||||
cleanup();
|
||||
return;
|
||||
}
|
||||
|
||||
// Create the context
|
||||
_eglcontext = eglCreateContext(_egldisplay, _eglconfig, EGL_NO_CONTEXT, context_attrs);
|
||||
if (_eglcontext == nullptr) {
|
||||
cleanup();
|
||||
return;
|
||||
}
|
||||
|
||||
// make this the current context so we can retrieve the information below
|
||||
eglMakeCurrent(_egldisplay, EGL_NO_SURFACE, EGL_NO_SURFACE, _eglcontext);
|
||||
|
||||
// Query available extensions
|
||||
const char* ptr = eglQueryString(_egldisplay, EGL_EXTENSIONS);
|
||||
_extensions = { ptr, strlen(ptr) + 1 };
|
||||
|
||||
// Query the context and version
|
||||
eglQueryContext(_egldisplay, _eglcontext, EGL_CONTEXT_CLIENT_TYPE, &_eglctype);
|
||||
glGetIntegerv(GL_MAJOR_VERSION, &_eglvmajor);
|
||||
glGetIntegerv(GL_MINOR_VERSION, &_eglvminor);
|
||||
}
|
||||
|
||||
eglcontext::~eglcontext() {
|
||||
cleanup();
|
||||
}
|
||||
|
||||
bool eglcontext::connected() {
|
||||
return _eglcontext != nullptr;
|
||||
}
|
||||
|
||||
const cstring& eglcontext::get_name() {
|
||||
static constexpr cstring opengl = "OpenGL";
|
||||
static constexpr cstring gles = "GLES";
|
||||
static constexpr cstring openvg = "OpenVG"; // this should never be used
|
||||
switch (_eglctype) {
|
||||
default:
|
||||
case EGL_OPENGL_API: return opengl;
|
||||
case EGL_OPENGL_ES_API: return gles;
|
||||
case EGL_OPENVG_API: return openvg;
|
||||
}
|
||||
}
|
||||
|
||||
bool eglcontext::check_extension(const cstring& ext) {
|
||||
return _extensions.find(ext) != _extensions.size();
|
||||
}
|
||||
|
||||
gfxsurface* eglcontext::create_surface(window* window) {
|
||||
return new eglsurface(this, window);
|
||||
}
|
||||
|
||||
void eglcontext::make_current(gfxsurface* surface) {
|
||||
eglsurface* eglsurface = static_cast<fennec::eglsurface*>(surface);
|
||||
eglMakeCurrent(_egldisplay, eglsurface->get_egl_surface(), eglsurface->get_egl_surface(), _eglcontext);
|
||||
}
|
||||
|
||||
void eglcontext::cleanup() {
|
||||
eglMakeCurrent(_display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
|
||||
eglDestroyContext(_display, _eglcontext);
|
||||
eglTerminate(_display);
|
||||
eglReleaseThread();
|
||||
|
||||
_egldisplay = nullptr;
|
||||
_eglconfig = nullptr;
|
||||
_eglcontext = nullptr;
|
||||
_eglvmajor = 0;
|
||||
_eglvminor = 0;
|
||||
}
|
||||
|
||||
}
|
||||
Reference in New Issue
Block a user