SDL_emscriptenopengles.c
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/*
Simple DirectMedia Layer
Copyright (C) 1997-2019 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();
}
/* Emscripten forces you to manually cast eglGetProcAddress to the real
function type; grep for "__eglMustCastToProperFunctionPointerType" in
Emscripten's egl.h for details. */
_this->egl_data->eglGetProcAddress = (void *(EGLAPIENTRY *)(const char *)) eglGetProcAddress;
LOAD_FUNC(eglGetDisplay);
LOAD_FUNC(eglInitialize);
LOAD_FUNC(eglTerminate);
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);
LOAD_FUNC(eglQueryString);
LOAD_FUNC(eglGetError);
_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");
}
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;
}
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: */
eglGetDisplay
EGLAPI EGLDisplay EGLAPIENTRY eglGetDisplay(EGLNativeDisplayType display_id)
SDL_strlcpy
#define SDL_strlcpy
Definition: SDL_dynapi_overrides.h:394
eglMakeCurrent
EGLAPI EGLBoolean EGLAPIENTRY eglMakeCurrent(EGLDisplay dpy, EGLSurface draw, EGLSurface read, EGLContext ctx)
eglSwapBuffers
EGLAPI EGLBoolean EGLAPIENTRY eglSwapBuffers(EGLDisplay dpy, EGLSurface surface)
eglInitialize
EGLAPI EGLBoolean EGLAPIENTRY eglInitialize(EGLDisplay dpy, EGLint *major, EGLint *minor)
NULL
#define NULL
Definition: begin_code.h:167
eglWaitNative
EGLAPI EGLBoolean EGLAPIENTRY eglWaitNative(EGLint engine)
EGL_DEFAULT_DISPLAY
#define EGL_DEFAULT_DISPLAY
Definition: egl.h:227
eglDestroySurface
EGLAPI EGLBoolean EGLAPIENTRY eglDestroySurface(EGLDisplay dpy, EGLSurface surface)
SDL_WindowData
Definition: SDL_androidwindow.h:38
SDL_VideoDevice::driver_path
char driver_path[256]
Definition: SDL_sysvideo.h:354
SDL_emscriptenopengles.h
SDL_emscriptenvideo.h
path
GLsizei const GLchar *const * path
Definition: SDL_opengl_glext.h:3730
h
GLfloat GLfloat GLfloat GLfloat h
Definition: SDL_opengl_glext.h:1946
EGL_TRUE
#define EGL_TRUE
Definition: egl.h:116
eglGetProcAddress
EGLAPI __eglMustCastToProperFunctionPointerType EGLAPIENTRY eglGetProcAddress(const char *procname)
data
GLint GLenum GLsizei GLsizei GLsizei GLint GLsizei const GLvoid * data
Definition: SDL_opengl.h:1974
SDL_Window
The type used to identify a window.
Definition: SDL_sysvideo.h:73
eglBindAPI
EGLAPI EGLBoolean EGLAPIENTRY eglBindAPI(EGLenum api)
eglChooseConfig
EGLAPI EGLBoolean EGLAPIENTRY eglChooseConfig(EGLDisplay dpy, const EGLint *attrib_list, EGLConfig *configs, EGLint config_size, EGLint *num_config)
_this
static SDL_VideoDevice * _this
Definition: SDL_video.c:118
window
EGLSurface EGLNativeWindowType * window
Definition: eglext.h:1025
gl2.h
eglDestroyContext
EGLAPI EGLBoolean EGLAPIENTRY eglDestroyContext(EGLDisplay dpy, EGLContext ctx)
eglCreateContext
EGLAPI EGLContext EGLAPIENTRY eglCreateContext(EGLDisplay dpy, EGLConfig config, EGLContext share_context, const EGLint *attrib_list)
_THIS
#define _THIS
Definition: SDL_alsa_audio.h:31
eglGetError
EGLAPI EGLint EGLAPIENTRY eglGetError(void)
eglCreateWindowSurface
EGLAPI EGLSurface EGLAPIENTRY eglCreateWindowSurface(EGLDisplay dpy, EGLConfig config, EGLNativeWindowType win, const EGLint *attrib_list)
SDL_VideoDevice::gl_config
struct SDL_VideoDevice::@262 gl_config
SDL_OutOfMemory
#define SDL_OutOfMemory()
Definition: SDL_error.h:52
eglSwapInterval
EGLAPI EGLBoolean EGLAPIENTRY eglSwapInterval(EGLDisplay dpy, EGLint interval)
SDL_calloc
#define SDL_calloc
Definition: SDL_dynapi_overrides.h:375
SDL_SetError
#define SDL_SetError
Definition: SDL_dynapi_overrides.h:30
EGLAPIENTRY
#define EGLAPIENTRY
Definition: eglplatform.h:54
eglTerminate
EGLAPI EGLBoolean EGLAPIENTRY eglTerminate(EGLDisplay dpy)
eglWaitGL
EGLAPI EGLBoolean EGLAPIENTRY eglWaitGL(void)
eglQueryString
const EGLAPI char *EGLAPIENTRY eglQueryString(EGLDisplay dpy, EGLint name)
eglGetConfigAttrib
EGLAPI EGLBoolean EGLAPIENTRY eglGetConfigAttrib(EGLDisplay dpy, EGLConfig config, EGLint attribute, EGLint *value)
w
GLubyte GLubyte GLubyte GLubyte w
Definition: SDL_opengl_glext.h:731