mirror of https://github.com/encounter/SDL.git
150 lines
5.3 KiB
Objective-C
150 lines
5.3 KiB
Objective-C
/*
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Simple DirectMedia Layer
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Copyright (C) 1997-2022 Sam Lantinga <slouken@libsdl.org>
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not
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claim that you wrote the original software. If you use this software
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in a product, an acknowledgment in the product documentation would be
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appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be
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misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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*/
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#include "../../SDL_internal.h"
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#if SDL_VIDEO_DRIVER_COCOA && SDL_VIDEO_OPENGL_EGL
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#include "SDL_cocoavideo.h"
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#include "SDL_cocoaopengles.h"
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#include "SDL_cocoaopengl.h"
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/* EGL implementation of SDL OpenGL support */
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int
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Cocoa_GLES_LoadLibrary(_THIS, const char *path)
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{
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/* If the profile requested is not GL ES, switch over to WIN_GL functions */
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if (_this->gl_config.profile_mask != SDL_GL_CONTEXT_PROFILE_ES) {
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#if SDL_VIDEO_OPENGL_CGL
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Cocoa_GLES_UnloadLibrary(_this);
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_this->GL_LoadLibrary = Cocoa_GL_LoadLibrary;
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_this->GL_GetProcAddress = Cocoa_GL_GetProcAddress;
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_this->GL_UnloadLibrary = Cocoa_GL_UnloadLibrary;
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_this->GL_CreateContext = Cocoa_GL_CreateContext;
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_this->GL_MakeCurrent = Cocoa_GL_MakeCurrent;
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_this->GL_SetSwapInterval = Cocoa_GL_SetSwapInterval;
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_this->GL_GetSwapInterval = Cocoa_GL_GetSwapInterval;
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_this->GL_SwapWindow = Cocoa_GL_SwapWindow;
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_this->GL_DeleteContext = Cocoa_GL_DeleteContext;
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return Cocoa_GL_LoadLibrary(_this, path);
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#else
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return SDL_SetError("SDL not configured with OpenGL/CGL support");
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#endif
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}
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if (_this->egl_data == NULL) {
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return SDL_EGL_LoadLibrary(_this, NULL, EGL_DEFAULT_DISPLAY, 0);
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}
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return 0;
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}
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SDL_GLContext
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Cocoa_GLES_CreateContext(_THIS, SDL_Window * window)
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{ @autoreleasepool
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{
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SDL_GLContext context;
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SDL_WindowData *data = (__bridge SDL_WindowData *)window->driverdata;
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#if SDL_VIDEO_OPENGL_CGL
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if (_this->gl_config.profile_mask != SDL_GL_CONTEXT_PROFILE_ES) {
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/* Switch to CGL based functions */
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Cocoa_GLES_UnloadLibrary(_this);
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_this->GL_LoadLibrary = Cocoa_GL_LoadLibrary;
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_this->GL_GetProcAddress = Cocoa_GL_GetProcAddress;
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_this->GL_UnloadLibrary = Cocoa_GL_UnloadLibrary;
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_this->GL_CreateContext = Cocoa_GL_CreateContext;
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_this->GL_MakeCurrent = Cocoa_GL_MakeCurrent;
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_this->GL_SetSwapInterval = Cocoa_GL_SetSwapInterval;
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_this->GL_GetSwapInterval = Cocoa_GL_GetSwapInterval;
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_this->GL_SwapWindow = Cocoa_GL_SwapWindow;
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_this->GL_DeleteContext = Cocoa_GL_DeleteContext;
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if (Cocoa_GL_LoadLibrary(_this, NULL) != 0) {
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return NULL;
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}
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return Cocoa_GL_CreateContext(_this, window);
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}
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#endif
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context = SDL_EGL_CreateContext(_this, data.egl_surface);
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return context;
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}}
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void
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Cocoa_GLES_DeleteContext(_THIS, SDL_GLContext context)
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{ @autoreleasepool
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{
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SDL_EGL_DeleteContext(_this, context);
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Cocoa_GLES_UnloadLibrary(_this);
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}}
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int
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Cocoa_GLES_SwapWindow(_THIS, SDL_Window * window)
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{ @autoreleasepool
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{
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return SDL_EGL_SwapBuffers(_this, ((__bridge SDL_WindowData *) window->driverdata).egl_surface);
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}}
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int
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Cocoa_GLES_MakeCurrent(_THIS, SDL_Window * window, SDL_GLContext context)
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{ @autoreleasepool
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{
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return SDL_EGL_MakeCurrent(_this, window ? ((__bridge SDL_WindowData *) window->driverdata).egl_surface : EGL_NO_SURFACE, context);
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}}
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int
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Cocoa_GLES_SetupWindow(_THIS, SDL_Window * window)
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{
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/* The current context is lost in here; save it and reset it. */
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SDL_WindowData *windowdata = (__bridge SDL_WindowData *) window->driverdata;
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SDL_Window *current_win = SDL_GL_GetCurrentWindow();
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SDL_GLContext current_ctx = SDL_GL_GetCurrentContext();
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if (_this->egl_data == NULL) {
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/* !!! FIXME: commenting out this assertion is (I think) incorrect; figure out why driver_loaded is wrong for ANGLE instead. --ryan. */
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#if 0 /* When hint SDL_HINT_OPENGL_ES_DRIVER is set to "1" (e.g. for ANGLE support), _this->gl_config.driver_loaded can be 1, while the below lines function. */
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SDL_assert(!_this->gl_config.driver_loaded);
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#endif
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if (SDL_EGL_LoadLibrary(_this, NULL, EGL_DEFAULT_DISPLAY, 0) < 0) {
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SDL_EGL_UnloadLibrary(_this);
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return -1;
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}
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_this->gl_config.driver_loaded = 1;
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}
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/* Create the GLES window surface */
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NSView* v = windowdata.nswindow.contentView;
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windowdata.egl_surface = SDL_EGL_CreateSurface(_this, (__bridge NativeWindowType)[v layer]);
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if (windowdata.egl_surface == EGL_NO_SURFACE) {
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return SDL_SetError("Could not create GLES window surface");
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}
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return Cocoa_GLES_MakeCurrent(_this, current_win, current_ctx);
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}
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#endif /* SDL_VIDEO_DRIVER_COCOA && SDL_VIDEO_OPENGL_EGL */
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/* vi: set ts=4 sw=4 expandtab: */
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