mirror of
https://github.com/Relintai/sdl2_frt.git
synced 2024-12-20 22:16:49 +01:00
118 lines
3.5 KiB
C
118 lines
3.5 KiB
C
/*
|
|
Simple DirectMedia Layer
|
|
Copyright (C) 1997-2016 Sam Lantinga <slouken@libsdl.org>
|
|
|
|
This software is provided 'as-is', without any express or implied
|
|
warranty. In no event will the authors be held liable for any damages
|
|
arising from the use of this software.
|
|
|
|
Permission is granted to anyone to use this software for any purpose,
|
|
including commercial applications, and to alter it and redistribute it
|
|
freely, subject to the following restrictions:
|
|
|
|
1. The origin of this software must not be misrepresented; you must not
|
|
claim that you wrote the original software. If you use this software
|
|
in a product, an acknowledgment in the product documentation would be
|
|
appreciated but is not required.
|
|
2. Altered source versions must be plainly marked as such, and must not be
|
|
misrepresented as being the original software.
|
|
3. This notice may not be removed or altered from any source distribution.
|
|
*/
|
|
#include "../../SDL_internal.h"
|
|
|
|
#if SDL_VIDEO_DRIVER_EMSCRIPTEN && SDL_VIDEO_OPENGL_EGL
|
|
|
|
#include <emscripten/emscripten.h>
|
|
#include <GLES2/gl2.h>
|
|
|
|
#include "SDL_emscriptenvideo.h"
|
|
#include "SDL_emscriptenopengles.h"
|
|
|
|
#define LOAD_FUNC(NAME) _this->egl_data->NAME = NAME;
|
|
|
|
/* EGL implementation of SDL OpenGL support */
|
|
|
|
int
|
|
Emscripten_GLES_LoadLibrary(_THIS, const char *path) {
|
|
/*we can't load EGL dynamically*/
|
|
_this->egl_data = (struct SDL_EGL_VideoData *) SDL_calloc(1, sizeof(SDL_EGL_VideoData));
|
|
if (!_this->egl_data) {
|
|
return SDL_OutOfMemory();
|
|
}
|
|
|
|
LOAD_FUNC(eglGetDisplay);
|
|
LOAD_FUNC(eglInitialize);
|
|
LOAD_FUNC(eglTerminate);
|
|
LOAD_FUNC(eglGetProcAddress);
|
|
LOAD_FUNC(eglChooseConfig);
|
|
LOAD_FUNC(eglGetConfigAttrib);
|
|
LOAD_FUNC(eglCreateContext);
|
|
LOAD_FUNC(eglDestroyContext);
|
|
LOAD_FUNC(eglCreateWindowSurface);
|
|
LOAD_FUNC(eglDestroySurface);
|
|
LOAD_FUNC(eglMakeCurrent);
|
|
LOAD_FUNC(eglSwapBuffers);
|
|
LOAD_FUNC(eglSwapInterval);
|
|
LOAD_FUNC(eglWaitNative);
|
|
LOAD_FUNC(eglWaitGL);
|
|
LOAD_FUNC(eglBindAPI);
|
|
|
|
_this->egl_data->egl_display = _this->egl_data->eglGetDisplay(EGL_DEFAULT_DISPLAY);
|
|
if (!_this->egl_data->egl_display) {
|
|
return SDL_SetError("Could not get EGL display");
|
|
}
|
|
|
|
if (_this->egl_data->eglInitialize(_this->egl_data->egl_display, NULL, NULL) != EGL_TRUE) {
|
|
return SDL_SetError("Could not initialize EGL");
|
|
}
|
|
|
|
_this->gl_config.driver_loaded = 1;
|
|
|
|
if (path) {
|
|
SDL_strlcpy(_this->gl_config.driver_path, path, sizeof(_this->gl_config.driver_path) - 1);
|
|
} else {
|
|
*_this->gl_config.driver_path = '\0';
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
Emscripten_GLES_DeleteContext(_THIS, SDL_GLContext context)
|
|
{
|
|
/*
|
|
WebGL contexts can't actually be deleted, so we need to reset it.
|
|
ES2 renderer resets state on init anyway, clearing the canvas should be enough
|
|
*/
|
|
|
|
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
|
|
|
|
SDL_EGL_DeleteContext(_this, context);
|
|
}
|
|
|
|
SDL_EGL_CreateContext_impl(Emscripten)
|
|
SDL_EGL_SwapWindow_impl(Emscripten)
|
|
SDL_EGL_MakeCurrent_impl(Emscripten)
|
|
|
|
void
|
|
Emscripten_GLES_GetDrawableSize(_THIS, SDL_Window * window, int * w, int * h)
|
|
{
|
|
SDL_WindowData *data;
|
|
if (window->driverdata) {
|
|
data = (SDL_WindowData *) window->driverdata;
|
|
|
|
if (w) {
|
|
*w = window->w * data->pixel_ratio;
|
|
}
|
|
|
|
if (h) {
|
|
*h = window->h * data->pixel_ratio;
|
|
}
|
|
}
|
|
}
|
|
|
|
#endif /* SDL_VIDEO_DRIVER_EMSCRIPTEN && SDL_VIDEO_OPENGL_EGL */
|
|
|
|
/* vi: set ts=4 sw=4 expandtab: */
|
|
|