SDL 2.0
SDL_emscriptenopengles.c
Go to the documentation of this file.
1/*
2 Simple DirectMedia Layer
3 Copyright (C) 1997-2019 Sam Lantinga <slouken@libsdl.org>
4
5 This software is provided 'as-is', without any express or implied
6 warranty. In no event will the authors be held liable for any damages
7 arising from the use of this software.
8
9 Permission is granted to anyone to use this software for any purpose,
10 including commercial applications, and to alter it and redistribute it
11 freely, subject to the following restrictions:
12
13 1. The origin of this software must not be misrepresented; you must not
14 claim that you wrote the original software. If you use this software
15 in a product, an acknowledgment in the product documentation would be
16 appreciated but is not required.
17 2. Altered source versions must be plainly marked as such, and must not be
18 misrepresented as being the original software.
19 3. This notice may not be removed or altered from any source distribution.
20*/
21#include "../../SDL_internal.h"
22
23#if SDL_VIDEO_DRIVER_EMSCRIPTEN && SDL_VIDEO_OPENGL_EGL
24
25#include <emscripten/emscripten.h>
26#include <GLES2/gl2.h>
27
28#include "SDL_emscriptenvideo.h"
30
31#define LOAD_FUNC(NAME) _this->egl_data->NAME = NAME;
32
33/* EGL implementation of SDL OpenGL support */
34
35int
36Emscripten_GLES_LoadLibrary(_THIS, const char *path) {
37 /*we can't load EGL dynamically*/
38 _this->egl_data = (struct SDL_EGL_VideoData *) SDL_calloc(1, sizeof(SDL_EGL_VideoData));
39 if (!_this->egl_data) {
40 return SDL_OutOfMemory();
41 }
42
43 /* Emscripten forces you to manually cast eglGetProcAddress to the real
44 function type; grep for "__eglMustCastToProperFunctionPointerType" in
45 Emscripten's egl.h for details. */
46 _this->egl_data->eglGetProcAddress = (void *(EGLAPIENTRY *)(const char *)) eglGetProcAddress;
47
48 LOAD_FUNC(eglGetDisplay);
49 LOAD_FUNC(eglInitialize);
50 LOAD_FUNC(eglTerminate);
51 LOAD_FUNC(eglChooseConfig);
52 LOAD_FUNC(eglGetConfigAttrib);
53 LOAD_FUNC(eglCreateContext);
54 LOAD_FUNC(eglDestroyContext);
55 LOAD_FUNC(eglCreateWindowSurface);
56 LOAD_FUNC(eglDestroySurface);
57 LOAD_FUNC(eglMakeCurrent);
58 LOAD_FUNC(eglSwapBuffers);
59 LOAD_FUNC(eglSwapInterval);
60 LOAD_FUNC(eglWaitNative);
61 LOAD_FUNC(eglWaitGL);
62 LOAD_FUNC(eglBindAPI);
63 LOAD_FUNC(eglQueryString);
64 LOAD_FUNC(eglGetError);
65
66 _this->egl_data->egl_display = _this->egl_data->eglGetDisplay(EGL_DEFAULT_DISPLAY);
67 if (!_this->egl_data->egl_display) {
68 return SDL_SetError("Could not get EGL display");
69 }
70
71 if (_this->egl_data->eglInitialize(_this->egl_data->egl_display, NULL, NULL) != EGL_TRUE) {
72 return SDL_SetError("Could not initialize EGL");
73 }
74
75 if (path) {
77 } else {
79 }
80
81 return 0;
82}
83
84SDL_EGL_CreateContext_impl(Emscripten)
85SDL_EGL_SwapWindow_impl(Emscripten)
86SDL_EGL_MakeCurrent_impl(Emscripten)
87
88void
89Emscripten_GLES_GetDrawableSize(_THIS, SDL_Window * window, int * w, int * h)
90{
92 if (window->driverdata) {
93 data = (SDL_WindowData *) window->driverdata;
94
95 if (w) {
96 *w = window->w * data->pixel_ratio;
97 }
98
99 if (h) {
100 *h = window->h * data->pixel_ratio;
101 }
102 }
103}
104
105#endif /* SDL_VIDEO_DRIVER_EMSCRIPTEN && SDL_VIDEO_OPENGL_EGL */
106
107/* vi: set ts=4 sw=4 expandtab: */
108
#define _THIS
#define SDL_SetError
#define SDL_strlcpy
#define SDL_calloc
#define SDL_OutOfMemory()
Definition: SDL_error.h:52
GLint GLenum GLsizei GLsizei GLsizei GLint GLsizei const GLvoid * data
Definition: SDL_opengl.h:1974
GLsizei const GLchar *const * path
GLfloat GLfloat GLfloat GLfloat h
GLubyte GLubyte GLubyte GLubyte w
static SDL_VideoDevice * _this
Definition: SDL_video.c:118
#define NULL
Definition: begin_code.h:167
EGLAPI EGLBoolean EGLAPIENTRY eglDestroySurface(EGLDisplay dpy, EGLSurface surface)
EGLAPI EGLBoolean EGLAPIENTRY eglInitialize(EGLDisplay dpy, EGLint *major, EGLint *minor)
#define EGL_DEFAULT_DISPLAY
Definition: egl.h:227
EGLAPI const char *EGLAPIENTRY eglQueryString(EGLDisplay dpy, EGLint name)
EGLAPI EGLSurface EGLAPIENTRY eglCreateWindowSurface(EGLDisplay dpy, EGLConfig config, EGLNativeWindowType win, const EGLint *attrib_list)
EGLAPI EGLBoolean EGLAPIENTRY eglTerminate(EGLDisplay dpy)
EGLAPI EGLBoolean EGLAPIENTRY eglChooseConfig(EGLDisplay dpy, const EGLint *attrib_list, EGLConfig *configs, EGLint config_size, EGLint *num_config)
EGLAPI EGLBoolean EGLAPIENTRY eglBindAPI(EGLenum api)
EGLAPI EGLBoolean EGLAPIENTRY eglMakeCurrent(EGLDisplay dpy, EGLSurface draw, EGLSurface read, EGLContext ctx)
EGLAPI EGLBoolean EGLAPIENTRY eglWaitNative(EGLint engine)
EGLAPI EGLDisplay EGLAPIENTRY eglGetDisplay(EGLNativeDisplayType display_id)
EGLAPI EGLBoolean EGLAPIENTRY eglDestroyContext(EGLDisplay dpy, EGLContext ctx)
EGLAPI EGLBoolean EGLAPIENTRY eglSwapInterval(EGLDisplay dpy, EGLint interval)
EGLAPI __eglMustCastToProperFunctionPointerType EGLAPIENTRY eglGetProcAddress(const char *procname)
EGLAPI EGLBoolean EGLAPIENTRY eglWaitGL(void)
#define EGL_TRUE
Definition: egl.h:116
EGLAPI EGLBoolean EGLAPIENTRY eglSwapBuffers(EGLDisplay dpy, EGLSurface surface)
EGLAPI EGLBoolean EGLAPIENTRY eglGetConfigAttrib(EGLDisplay dpy, EGLConfig config, EGLint attribute, EGLint *value)
EGLAPI EGLint EGLAPIENTRY eglGetError(void)
EGLAPI EGLContext EGLAPIENTRY eglCreateContext(EGLDisplay dpy, EGLConfig config, EGLContext share_context, const EGLint *attrib_list)
EGLSurface EGLNativeWindowType * window
Definition: eglext.h:1025
#define EGLAPIENTRY
Definition: eglplatform.h:54
char driver_path[256]
Definition: SDL_sysvideo.h:354
struct SDL_VideoDevice::@262 gl_config
The type used to identify a window.
Definition: SDL_sysvideo.h:74