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egl.c
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egl.c
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/*
* Copyright (c) 2012 Carsten Munk <carsten.munk@gmail.com>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
/* EGL function pointers */
#define EGL_EGLEXT_PROTOTYPES
#include <EGL/egl.h>
#include <EGL/eglext.h>
#include <GLES2/gl2.h>
#include <GLES2/gl2ext.h>
#include <dlfcn.h>
#include <stddef.h>
#include <stdlib.h>
#include <malloc.h>
#include "ws.h"
#include "helper.h"
#include <assert.h>
#include <hybris/internal/binding.h>
#include <string.h>
#include <system/window.h>
#include "logging.h"
static void *_libegl = NULL;
static void *_libgles = NULL;
static EGLint (*_eglGetError)(void) = NULL;
static EGLDisplay (*_eglGetDisplay)(EGLNativeDisplayType display_id) = NULL;
static EGLBoolean (*_eglInitialize)(EGLDisplay dpy, EGLint *major, EGLint *minor) = NULL;
static EGLBoolean (*_eglTerminate)(EGLDisplay dpy) = NULL;
static const char * (*_eglQueryString)(EGLDisplay dpy, EGLint name) = NULL;
static EGLBoolean (*_eglGetConfigs)(EGLDisplay dpy, EGLConfig *configs,
EGLint config_size, EGLint *num_config) = NULL;
static EGLBoolean (*_eglChooseConfig)(EGLDisplay dpy, const EGLint *attrib_list,
EGLConfig *configs, EGLint config_size,
EGLint *num_config) = NULL;
static EGLBoolean (*_eglGetConfigAttrib)(EGLDisplay dpy, EGLConfig config,
EGLint attribute, EGLint *value) = NULL;
static EGLSurface (*_eglCreateWindowSurface)(EGLDisplay dpy, EGLConfig config,
EGLNativeWindowType win,
const EGLint *attrib_list) = NULL;
static EGLSurface (*_eglCreatePbufferSurface)(EGLDisplay dpy, EGLConfig config,
const EGLint *attrib_list) = NULL;
static EGLSurface (*_eglCreatePixmapSurface)(EGLDisplay dpy, EGLConfig config,
EGLNativePixmapType pixmap,
const EGLint *attrib_list) = NULL;
static EGLBoolean (*_eglDestroySurface)(EGLDisplay dpy, EGLSurface surface) = NULL;
static EGLBoolean (*_eglQuerySurface)(EGLDisplay dpy, EGLSurface surface,
EGLint attribute, EGLint *value) = NULL;
static EGLBoolean (*_eglBindAPI)(EGLenum api) = NULL;
static EGLenum (*_eglQueryAPI)(void) = NULL;
static EGLBoolean (*_eglWaitClient)(void) = NULL;
static EGLBoolean (*_eglReleaseThread)(void) = NULL;
static EGLSurface (*_eglCreatePbufferFromClientBuffer)(
EGLDisplay dpy, EGLenum buftype, EGLClientBuffer buffer,
EGLConfig config, const EGLint *attrib_list) = NULL;
static EGLBoolean (*_eglSurfaceAttrib)(EGLDisplay dpy, EGLSurface surface,
EGLint attribute, EGLint value) = NULL;
static EGLBoolean (*_eglBindTexImage)(EGLDisplay dpy, EGLSurface surface, EGLint buffer) = NULL;
static EGLBoolean (*_eglReleaseTexImage)(EGLDisplay dpy, EGLSurface surface, EGLint buffer) = NULL;
static EGLBoolean (*_eglSwapInterval)(EGLDisplay dpy, EGLint interval) = NULL;
static EGLContext (*_eglCreateContext)(EGLDisplay dpy, EGLConfig config,
EGLContext share_context,
const EGLint *attrib_list) = NULL;
static EGLBoolean (*_eglDestroyContext)(EGLDisplay dpy, EGLContext ctx) = NULL;
static EGLBoolean (*_eglMakeCurrent)(EGLDisplay dpy, EGLSurface draw,
EGLSurface read, EGLContext ctx) = NULL;
static EGLContext (*_eglGetCurrentContext)(void) = NULL;
static EGLSurface (*_eglGetCurrentSurface)(EGLint readdraw) = NULL;
static EGLDisplay (*_eglGetCurrentDisplay)(void) = NULL;
static EGLBoolean (*_eglQueryContext)(EGLDisplay dpy, EGLContext ctx,
EGLint attribute, EGLint *value) = NULL;
static EGLBoolean (*_eglWaitGL)(void) = NULL;
static EGLBoolean (*_eglWaitNative)(EGLint engine) = NULL;
static EGLBoolean (*_eglSwapBuffers)(EGLDisplay dpy, EGLSurface surface) = NULL;
static EGLBoolean (*_eglCopyBuffers)(EGLDisplay dpy, EGLSurface surface,
EGLNativePixmapType target) = NULL;
static EGLImageKHR (*_eglCreateImageKHR)(EGLDisplay dpy, EGLContext ctx, EGLenum target, EGLClientBuffer buffer, const EGLint *attrib_list) = NULL;
static EGLBoolean (*_eglDestroyImageKHR) (EGLDisplay dpy, EGLImageKHR image) = NULL;
static void (*_glEGLImageTargetTexture2DOES) (GLenum target, GLeglImageOES image) = NULL;
static __eglMustCastToProperFunctionPointerType (*_eglGetProcAddress)(const char *procname) = NULL;
static void _init_androidegl()
{
_libegl = (void *) android_dlopen(getenv("LIBEGL") ? getenv("LIBEGL") : "libEGL.so", RTLD_LAZY);
_libgles = (void *) android_dlopen(getenv("LIBGLESV2") ? getenv("LIBGLESV2") : "libGLESv2.so", RTLD_LAZY);
}
static void * _android_egl_dlsym(const char *symbol)
{
if (_libegl == NULL)
_init_androidegl();
return android_dlsym(_libegl, symbol);
}
struct ws_egl_interface hybris_egl_interface = {
_android_egl_dlsym,
egl_helper_has_mapping,
egl_helper_get_mapping,
};
#define EGL_DLSYM(fptr, sym) do { if (_libegl == NULL) { _init_androidegl(); }; if (*(fptr) == NULL) { *(fptr) = (void *) android_dlsym(_libegl, sym); } } while (0)
#define GLESv2_DLSYM(fptr, sym) do { if (_libgles == NULL) { _init_androidegl(); }; if (*(fptr) == NULL) { *(fptr) = (void *) android_dlsym(_libgles, sym); } } while (0)
EGLint eglGetError(void)
{
EGL_DLSYM(&_eglGetError, "eglGetError");
return (*_eglGetError)();
}
struct _eglDisplayMapping {
EGLNativeDisplayType ndt;
EGLDisplay display;
};
#define _EGL_MAX_DISPLAYS 100
struct _eglDisplayMapping *_displayMappings[_EGL_MAX_DISPLAYS];
void _addMapping(EGLNativeDisplayType display_id, EGLDisplay display)
{
int i;
for (i = 0; i < _EGL_MAX_DISPLAYS; i++)
{
if (_displayMappings[i] == NULL)
{
_displayMappings[i] = (struct _eglDisplayMapping *) malloc(sizeof(struct _eglDisplayMapping));
_displayMappings[i]->ndt = display_id;
_displayMappings[i]->display = display;
return;
}
}
}
EGLNativeDisplayType _egldisplay2NDT(EGLDisplay display)
{
int i;
for (i = 0; i < _EGL_MAX_DISPLAYS; i++)
{
if (_displayMappings[i])
{
if (_displayMappings[i]->display == display)
{
return _displayMappings[i]->ndt;
}
}
}
return EGL_NO_DISPLAY;
}
EGLDisplay eglGetDisplay(EGLNativeDisplayType display_id)
{
EGL_DLSYM(&_eglGetDisplay, "eglGetDisplay");
EGLNativeDisplayType real_display;
if (!ws_IsValidDisplay(display_id))
{
return EGL_NO_DISPLAY;
}
real_display = (*_eglGetDisplay)(EGL_DEFAULT_DISPLAY);
if (real_display == EGL_NO_DISPLAY)
{
return EGL_NO_DISPLAY;
}
_addMapping(display_id, real_display);
return real_display;
}
EGLBoolean eglInitialize(EGLDisplay dpy, EGLint *major, EGLint *minor)
{
EGL_DLSYM(&_eglInitialize, "eglInitialize");
return (*_eglInitialize)(dpy, major, minor);
}
EGLBoolean eglTerminate(EGLDisplay dpy)
{
EGL_DLSYM(&_eglTerminate, "eglTerminate");
return (*_eglTerminate)(dpy);
}
const char * eglQueryString(EGLDisplay dpy, EGLint name)
{
EGL_DLSYM(&_eglQueryString, "eglQueryString");
return ws_eglQueryString(dpy, name, _eglQueryString);
}
EGLBoolean eglGetConfigs(EGLDisplay dpy, EGLConfig *configs,
EGLint config_size, EGLint *num_config)
{
EGL_DLSYM(&_eglGetConfigs, "eglGetConfigs");
return (*_eglGetConfigs)(dpy, configs, config_size, num_config);
}
EGLBoolean eglChooseConfig(EGLDisplay dpy, const EGLint *attrib_list,
EGLConfig *configs, EGLint config_size,
EGLint *num_config)
{
EGL_DLSYM(&_eglChooseConfig, "eglChooseConfig");
return (*_eglChooseConfig)(dpy, attrib_list,
configs, config_size,
num_config);
}
EGLBoolean eglGetConfigAttrib(EGLDisplay dpy, EGLConfig config,
EGLint attribute, EGLint *value)
{
EGL_DLSYM(&_eglGetConfigAttrib, "eglGetConfigAttrib");
return (*_eglGetConfigAttrib)(dpy, config,
attribute, value);
}
EGLSurface eglCreateWindowSurface(EGLDisplay dpy, EGLConfig config,
EGLNativeWindowType win,
const EGLint *attrib_list)
{
EGL_DLSYM(&_eglCreateWindowSurface, "eglCreateWindowSurface");
win = ws_CreateWindow(win, _egldisplay2NDT(dpy));
assert(((struct ANativeWindowBuffer *) win)->common.magic == ANDROID_NATIVE_WINDOW_MAGIC);
EGLSurface result = (*_eglCreateWindowSurface)(dpy, config, win, attrib_list);
egl_helper_push_mapping(result, win);
return result;
}
EGLSurface eglCreatePbufferSurface(EGLDisplay dpy, EGLConfig config,
const EGLint *attrib_list)
{
EGL_DLSYM(&_eglCreatePbufferSurface, "eglCreatePbufferSurface");
return (*_eglCreatePbufferSurface)(dpy, config, attrib_list);
}
EGLSurface eglCreatePixmapSurface(EGLDisplay dpy, EGLConfig config,
EGLNativePixmapType pixmap,
const EGLint *attrib_list)
{
EGL_DLSYM(&_eglCreatePixmapSurface, "eglCreatePixmapSurface");
return (*_eglCreatePixmapSurface)(dpy, config, pixmap, attrib_list);
}
EGLBoolean eglDestroySurface(EGLDisplay dpy, EGLSurface surface)
{
EGL_DLSYM(&_eglDestroySurface, "eglDestroySurface");
EGLBoolean result = (*_eglDestroySurface)(dpy, surface);
/**
* If the surface was created via eglCreateWindowSurface, we must
* notify the ws about surface destruction for clean-up.
**/
if (egl_helper_has_mapping(surface)) {
ws_DestroyWindow(egl_helper_pop_mapping(surface));
}
return result;
}
EGLBoolean eglQuerySurface(EGLDisplay dpy, EGLSurface surface,
EGLint attribute, EGLint *value)
{
EGL_DLSYM(&_eglQuerySurface, "eglQuerySurface");
return (*_eglQuerySurface)(dpy, surface, attribute, value);
}
EGLBoolean eglBindAPI(EGLenum api)
{
EGL_DLSYM(&_eglBindAPI, "eglBindAPI");
return (*_eglBindAPI)(api);
}
EGLenum eglQueryAPI(void)
{
EGL_DLSYM(&_eglQueryAPI, "eglQueryAPI");
return (*_eglQueryAPI)();
}
EGLBoolean eglWaitClient(void)
{
EGL_DLSYM(&_eglWaitClient, "eglWaitClient");
return (*_eglWaitClient)();
}
EGLBoolean eglReleaseThread(void)
{
EGL_DLSYM(&_eglReleaseThread, "eglReleaseThread");
return (*_eglReleaseThread)();
}
EGLSurface eglCreatePbufferFromClientBuffer(
EGLDisplay dpy, EGLenum buftype, EGLClientBuffer buffer,
EGLConfig config, const EGLint *attrib_list)
{
EGL_DLSYM(&_eglCreatePbufferFromClientBuffer, "eglCreatePbufferFromClientBuffer");
return (*_eglCreatePbufferFromClientBuffer)(dpy, buftype, buffer, config, attrib_list);
}
EGLBoolean eglSurfaceAttrib(EGLDisplay dpy, EGLSurface surface,
EGLint attribute, EGLint value)
{
EGL_DLSYM(&_eglSurfaceAttrib, "eglSurfaceAttrib");
return (*_eglSurfaceAttrib)(dpy, surface, attribute, value);
}
EGLBoolean eglBindTexImage(EGLDisplay dpy, EGLSurface surface, EGLint buffer)
{
EGL_DLSYM(&_eglBindTexImage, "eglBindTexImage");
return (*_eglBindTexImage)(dpy, surface, buffer);
}
EGLBoolean eglReleaseTexImage(EGLDisplay dpy, EGLSurface surface, EGLint buffer)
{
EGL_DLSYM(&_eglReleaseTexImage, "eglReleaseTexImage");
return (*_eglReleaseTexImage)(dpy, surface, buffer);
}
EGLBoolean eglSwapInterval(EGLDisplay dpy, EGLint interval)
{
EGL_DLSYM(&_eglSwapInterval, "eglSwapInterval");
return (*_eglSwapInterval)(dpy, interval);
}
EGLContext eglCreateContext(EGLDisplay dpy, EGLConfig config,
EGLContext share_context,
const EGLint *attrib_list)
{
EGL_DLSYM(&_eglCreateContext, "eglCreateContext");
return (*_eglCreateContext)(dpy, config, share_context, attrib_list);
}
EGLBoolean eglDestroyContext(EGLDisplay dpy, EGLContext ctx)
{
EGL_DLSYM(&_eglDestroyContext, "eglDestroyContext");
return (*_eglDestroyContext)(dpy, ctx);
}
EGLBoolean eglMakeCurrent(EGLDisplay dpy, EGLSurface draw,
EGLSurface read, EGLContext ctx)
{
EGL_DLSYM(&_eglMakeCurrent, "eglMakeCurrent");
return (*_eglMakeCurrent)(dpy, draw, read, ctx);
}
EGLContext eglGetCurrentContext(void)
{
EGL_DLSYM(&_eglGetCurrentContext, "eglGetCurrentContext");
return (*_eglGetCurrentContext)();
}
EGLSurface eglGetCurrentSurface(EGLint readdraw)
{
EGL_DLSYM(&_eglGetCurrentSurface, "eglGetCurrentSurface");
return (*_eglGetCurrentSurface)(readdraw);
}
EGLDisplay eglGetCurrentDisplay(void)
{
EGL_DLSYM(&_eglGetCurrentDisplay, "eglGetCurrentDisplay");
return (*_eglGetCurrentDisplay)();
}
EGLBoolean eglQueryContext(EGLDisplay dpy, EGLContext ctx,
EGLint attribute, EGLint *value)
{
EGL_DLSYM(&_eglQueryContext, "eglQueryContext");
return (*_eglQueryContext)(dpy, ctx, attribute, value);
}
EGLBoolean eglWaitGL(void)
{
EGL_DLSYM(&_eglWaitGL, "eglWaitGL");
return (*_eglWaitGL)();
}
EGLBoolean eglWaitNative(EGLint engine)
{
EGL_DLSYM(&_eglWaitNative, "eglWaitNative");
return (*_eglWaitNative)(engine);
}
EGLBoolean eglSwapBuffers(EGLDisplay dpy, EGLSurface surface)
{
EGLBoolean ret;
HYBRIS_TRACE_BEGIN("hybris-egl", "eglSwapBuffers", "");
EGL_DLSYM(&_eglSwapBuffers, "eglSwapBuffers");
ret = (*_eglSwapBuffers)(dpy, surface);
HYBRIS_TRACE_END("hybris-egl", "eglSwapBuffers", "");
return ret;
}
EGLBoolean eglCopyBuffers(EGLDisplay dpy, EGLSurface surface,
EGLNativePixmapType target)
{
EGL_DLSYM(&_eglCopyBuffers, "eglCopyBuffers");
return (*_eglCopyBuffers)(dpy, surface, target);
}
static EGLImageKHR _my_eglCreateImageKHR(EGLDisplay dpy, EGLContext ctx, EGLenum target, EGLClientBuffer buffer, const EGLint *attrib_list)
{
EGL_DLSYM(&_eglCreateImageKHR, "eglCreateImageKHR");
EGLContext newctx = ctx;
EGLenum newtarget = target;
EGLClientBuffer newbuffer = buffer;
const EGLint *newattrib_list = attrib_list;
ws_passthroughImageKHR(&newctx, &newtarget, &newbuffer, &newattrib_list);
return (*_eglCreateImageKHR)(dpy, newctx, newtarget, newbuffer, newattrib_list);
}
static void _my_glEGLImageTargetTexture2DOES(GLenum target, GLeglImageOES image)
{
GLESv2_DLSYM(&_glEGLImageTargetTexture2DOES, "glEGLImageTargetTexture2DOES");
(*_glEGLImageTargetTexture2DOES)(target, image);
return;
}
__eglMustCastToProperFunctionPointerType eglGetProcAddress(const char *procname)
{
EGL_DLSYM(&_eglGetProcAddress, "eglGetProcAddress");
if (strcmp(procname, "eglCreateImageKHR") == 0)
{
return _my_eglCreateImageKHR;
}
else if (strcmp(procname, "glEGLImageTargetTexture2DOES") == 0)
{
return _my_glEGLImageTargetTexture2DOES;
}
__eglMustCastToProperFunctionPointerType ret = ws_eglGetProcAddress(procname);
if (ret == NULL)
return (*_eglGetProcAddress)(procname);
else return ret;
}
EGLBoolean eglDestroyImageKHR(EGLDisplay dpy, EGLImageKHR image)
{
EGL_DLSYM(&_eglDestroyImageKHR, "eglDestroyImageKHR");
return (*_eglDestroyImageKHR)(dpy, image);
}
// vim:ts=4:sw=4:noexpandtab