Added missing files for OpenGL ES support
--HG-- extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%403649
This commit is contained in:
Sam Lantinga
parent
63be31556a
commit
8aa58621a6
2 changed files with 461 additions and 0 deletions
366
src/video/x11/SDL_x11opengles.c
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366
src/video/x11/SDL_x11opengles.c
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@ -0,0 +1,366 @@
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/*
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SDL - Simple DirectMedia Layer
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Copyright (C) 1997-2009 Sam Lantinga
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with _this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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Sam Lantinga
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slouken@libsdl.org
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Open Pandora SDL driver
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Copyright (C) 2009 David Carré
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(cpasjuste@gmail.com)
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*/
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#include "SDL_config.h"
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#if SDL_VIDEO_OPENGL_ES
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#include "SDL_x11video.h"
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#include "SDL_x11opengles.h"
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#define DEFAULT_OPENGL "/usr/lib/libGLES_CM.so"
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#define LOAD_FUNC(NAME) \
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*((void**)&_this->gles_data->NAME) = dlsym(handle, #NAME); \
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if (!_this->gles_data->NAME) \
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{ \
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SDL_SetError("Could not retrieve EGL function " #NAME); \
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return -1; \
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}
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/* GLES implementation of SDL OpenGL support */
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void *
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X11_GLES_GetProcAddress(_THIS, const char *proc)
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{
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static char procname[1024];
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void *handle;
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void *retval;
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handle = _this->gl_config.dll_handle;
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if (_this->gles_data->eglGetProcAddress) {
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retval = _this->gles_data->eglGetProcAddress(proc);
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if (retval) {
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return retval;
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}
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}
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#if defined(__OpenBSD__) && !defined(__ELF__)
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#undef dlsym(x,y);
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#endif
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retval = dlsym(handle, proc);
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if (!retval && strlen(proc) <= 1022) {
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procname[0] = '_';
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strcpy(procname + 1, proc);
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retval = dlsym(handle, procname);
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}
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return retval;
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}
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void
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X11_GLES_UnloadLibrary(_THIS)
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{
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if (_this->gl_config.driver_loaded) {
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_this->gles_data->eglTerminate(_this->gles_data->egl_display);
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dlclose(_this->gl_config.dll_handle);
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_this->gles_data->eglGetProcAddress = NULL;
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_this->gles_data->eglChooseConfig = NULL;
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_this->gles_data->eglCreateContext = NULL;
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_this->gles_data->eglCreateWindowSurface = NULL;
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_this->gles_data->eglDestroyContext = NULL;
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_this->gles_data->eglDestroySurface = NULL;
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_this->gles_data->eglMakeCurrent = NULL;
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_this->gles_data->eglSwapBuffers = NULL;
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_this->gles_data->eglGetDisplay = NULL;
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_this->gles_data->eglTerminate = NULL;
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_this->gl_config.dll_handle = NULL;
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_this->gl_config.driver_loaded = 0;
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}
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}
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int
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X11_GLES_LoadLibrary(_THIS, const char *path)
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{
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void *handle;
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int dlopen_flags;
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SDL_VideoData *data = (SDL_VideoData *) _this->driverdata;
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if (_this->gles_data->egl_active) {
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SDL_SetError("OpenGL ES context already created");
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return -1;
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}
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#ifdef RTLD_GLOBAL
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dlopen_flags = RTLD_LAZY | RTLD_GLOBAL;
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#else
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dlopen_flags = RTLD_LAZY;
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#endif
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handle = dlopen(path, dlopen_flags);
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/* Catch the case where the application isn't linked with EGL */
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if ((dlsym(handle, "eglChooseConfig") == NULL) && (path == NULL)) {
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dlclose(handle);
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path = getenv("SDL_VIDEO_GL_DRIVER");
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if (path == NULL) {
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path = DEFAULT_OPENGL;
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}
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handle = dlopen(path, dlopen_flags);
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}
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if (handle == NULL) {
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SDL_SetError("Could not load OpenGL ES/EGL library");
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return -1;
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}
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/* Unload the old driver and reset the pointers */
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X11_GLES_UnloadLibrary(_this);
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/* Load new function pointers */
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LOAD_FUNC(eglGetDisplay);
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LOAD_FUNC(eglInitialize);
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LOAD_FUNC(eglTerminate);
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LOAD_FUNC(eglGetProcAddress);
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LOAD_FUNC(eglChooseConfig);
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LOAD_FUNC(eglGetConfigAttrib);
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LOAD_FUNC(eglCreateContext);
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LOAD_FUNC(eglDestroyContext);
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LOAD_FUNC(eglCreateWindowSurface);
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LOAD_FUNC(eglDestroySurface);
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LOAD_FUNC(eglMakeCurrent);
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LOAD_FUNC(eglSwapBuffers);
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_this->gles_data->egl_display =
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_this->gles_data->eglGetDisplay((NativeDisplayType) data->display);
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if (!_this->gles_data->egl_display) {
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SDL_SetError("Could not get EGL display");
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return -1;
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}
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if (_this->gles_data->
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eglInitialize(_this->gles_data->egl_display, NULL,
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NULL) != EGL_TRUE) {
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SDL_SetError("Could not initialize EGL");
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return -1;
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}
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_this->gl_config.dll_handle = handle;
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_this->gl_config.driver_loaded = 1;
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if (path) {
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strncpy(_this->gl_config.driver_path, path,
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sizeof(_this->gl_config.driver_path) - 1);
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} else {
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strcpy(_this->gl_config.driver_path, "");
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}
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return 0;
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}
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XVisualInfo *
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X11_GLES_GetVisual(_THIS, Display * display, int screen)
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{
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/* 64 seems nice. */
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EGLint attribs[64];
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EGLint found_configs = 0;
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VisualID visual_id;
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int i;
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/* load the gl driver from a default path */
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if (!_this->gl_config.driver_loaded) {
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/* no driver has been loaded, use default (ourselves) */
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if (X11_GLES_LoadLibrary(_this, NULL) < 0) {
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return NULL;
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}
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}
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i = 0;
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attribs[i++] = EGL_RED_SIZE;
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attribs[i++] = _this->gl_config.red_size;
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attribs[i++] = EGL_GREEN_SIZE;
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attribs[i++] = _this->gl_config.green_size;
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attribs[i++] = EGL_BLUE_SIZE;
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attribs[i++] = _this->gl_config.blue_size;
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if (_this->gl_config.alpha_size) {
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attribs[i++] = EGL_ALPHA_SIZE;
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attribs[i++] = _this->gl_config.alpha_size;
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}
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if (_this->gl_config.buffer_size) {
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attribs[i++] = EGL_BUFFER_SIZE;
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attribs[i++] = _this->gl_config.buffer_size;
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}
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attribs[i++] = EGL_DEPTH_SIZE;
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attribs[i++] = _this->gl_config.depth_size;
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if (_this->gl_config.stencil_size) {
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attribs[i++] = EGL_STENCIL_SIZE;
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attribs[i++] = _this->gl_config.stencil_size;
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}
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if (_this->gl_config.multisamplebuffers) {
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attribs[i++] = EGL_SAMPLE_BUFFERS;
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attribs[i++] = _this->gl_config.multisamplebuffers;
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}
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if (_this->gl_config.multisamplesamples) {
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attribs[i++] = EGL_SAMPLES;
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attribs[i++] = _this->gl_config.multisamplesamples;
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}
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attribs[i++] = EGL_NONE;
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if (_this->gles_data->eglChooseConfig(_this->gles_data->egl_display,
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attribs,
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&_this->gles_data->egl_config, 1,
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&found_configs) == EGL_FALSE ||
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found_configs == 0) {
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SDL_SetError("Couldn't find matching EGL config");
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return NULL;
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}
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if (_this->gles_data->eglGetConfigAttrib(_this->gles_data->egl_display,
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_this->gles_data->egl_config,
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EGL_NATIVE_VISUAL_ID,
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(EGLint *) & visual_id) ==
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EGL_FALSE || !visual_id) {
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/* Use the default visual when all else fails */
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XVisualInfo vi_in;
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int out_count;
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vi_in.screen = screen;
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_this->gles_data->egl_visualinfo = XGetVisualInfo(display,
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VisualScreenMask,
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&vi_in, &out_count);
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} else {
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XVisualInfo vi_in;
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int out_count;
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vi_in.screen = screen;
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vi_in.visualid = visual_id;
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_this->gles_data->egl_visualinfo = XGetVisualInfo(display,
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VisualScreenMask |
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VisualIDMask,
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&vi_in, &out_count);
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}
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return _this->gles_data->egl_visualinfo;
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}
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SDL_GLContext
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X11_GLES_CreateContext(_THIS, SDL_Window * window)
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{
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int retval;
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SDL_WindowData *data = (SDL_WindowData *) window->driverdata;
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Display *display = data->videodata->display;
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XSync(display, False);
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_this->gles_data->egl_context =
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_this->gles_data->eglCreateContext(_this->gles_data->egl_display,
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_this->gles_data->egl_config,
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EGL_NO_CONTEXT, NULL);
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XSync(display, False);
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if (_this->gles_data->egl_context == EGL_NO_CONTEXT) {
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SDL_SetError("Could not create EGL context");
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return NULL;
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}
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_this->gles_data->egl_active = 1;
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if (_this->gles_data->egl_active)
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retval = 1;
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else
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retval = 0;
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return (retval);
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}
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int
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X11_GLES_MakeCurrent(_THIS, SDL_Window * window, SDL_GLContext context)
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{
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int retval;
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SDL_WindowData *data = (SDL_WindowData *) window->driverdata;
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Display *display = data->videodata->display;
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retval = 1;
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if (!_this->gles_data->eglMakeCurrent(_this->gles_data->egl_display,
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_this->gles_data->egl_surface,
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_this->gles_data->egl_surface,
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_this->gles_data->egl_context)) {
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SDL_SetError("Unable to make EGL context current");
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retval = -1;
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}
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XSync(display, False);
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return (retval);
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}
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static int swapinterval = -1;
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int
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X11_GLES_SetSwapInterval(_THIS, int interval)
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{
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return 0;
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}
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int
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X11_GLES_GetSwapInterval(_THIS)
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{
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return 0;
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}
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void
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X11_GLES_SwapWindow(_THIS, SDL_Window * window)
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{
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_this->gles_data->eglSwapBuffers(_this->gles_data->egl_display,
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_this->gles_data->egl_surface);
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}
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void
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X11_GLES_DeleteContext(_THIS, SDL_GLContext context)
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{
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/* Clean up GLES and EGL */
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if (_this->gles_data->egl_context != EGL_NO_CONTEXT ||
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_this->gles_data->egl_surface != EGL_NO_SURFACE) {
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_this->gles_data->eglMakeCurrent(_this->gles_data->egl_display,
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EGL_NO_SURFACE, EGL_NO_SURFACE,
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EGL_NO_CONTEXT);
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if (_this->gles_data->egl_context != EGL_NO_CONTEXT) {
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_this->gles_data->eglDestroyContext(_this->gles_data->egl_display,
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_this->gles_data->
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egl_context);
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_this->gles_data->egl_context = EGL_NO_CONTEXT;
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}
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if (_this->gles_data->egl_surface != EGL_NO_SURFACE) {
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_this->gles_data->eglDestroySurface(_this->gles_data->egl_display,
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_this->gles_data->
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egl_surface);
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_this->gles_data->egl_surface = EGL_NO_SURFACE;
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}
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}
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_this->gles_data->egl_active = 0;
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}
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#endif /* SDL_VIDEO_OPENGL_ES */
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/* vi: set ts=4 sw=4 expandtab: */
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95
src/video/x11/SDL_x11opengles.h
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95
src/video/x11/SDL_x11opengles.h
Normal file
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@ -0,0 +1,95 @@
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/*
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SDL - Simple DirectMedia Layer
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Copyright (C) 1997-2004 Sam Lantinga
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
Library General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU Library General Public
|
||||
License along with this library; if not, write to the Free
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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Sam Lantinga
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slouken@libsdl.org
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Open Pandora SDL driver
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Copyright (C) 2009 David Carré
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(cpasjuste@gmail.com)
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*/
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#include <GLES/gl.h>
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#include <GLES/egl.h>
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#include <dlfcn.h>
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#if defined(__OpenBSD__) && !defined(__ELF__)
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#define dlsym(x,y) dlsym(x, "_" y)
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#endif
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#include "../SDL_sysvideo.h"
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typedef struct SDL_PrivateGLESData
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{
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int egl_active; /* to stop switching drivers while we have a valid context */
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XVisualInfo *egl_visualinfo;
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EGLDisplay egl_display;
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EGLContext egl_context; /* Current GLES context */
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EGLSurface egl_surface;
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EGLConfig egl_config;
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EGLDisplay(*eglGetDisplay) (NativeDisplayType display);
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EGLBoolean(*eglInitialize) (EGLDisplay dpy, EGLint * major,
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EGLint * minor);
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EGLBoolean(*eglTerminate) (EGLDisplay dpy);
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void *(*eglGetProcAddress) (const GLubyte * procName);
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EGLBoolean(*eglChooseConfig) (EGLDisplay dpy,
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const EGLint * attrib_list,
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EGLConfig * configs,
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EGLint config_size, EGLint * num_config);
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EGLContext(*eglCreateContext) (EGLDisplay dpy,
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EGLConfig config,
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EGLContext share_list,
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const EGLint * attrib_list);
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EGLBoolean(*eglDestroyContext) (EGLDisplay dpy, EGLContext ctx);
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EGLSurface(*eglCreateWindowSurface) (EGLDisplay dpy,
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EGLConfig config,
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NativeWindowType window,
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const EGLint * attrib_list);
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EGLBoolean(*eglDestroySurface) (EGLDisplay dpy, EGLSurface surface);
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EGLBoolean(*eglMakeCurrent) (EGLDisplay dpy, EGLSurface draw,
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EGLSurface read, EGLContext ctx);
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EGLBoolean(*eglSwapBuffers) (EGLDisplay dpy, EGLSurface draw);
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const char *(*eglQueryString) (EGLDisplay dpy, EGLint name);
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EGLBoolean(*eglGetConfigAttrib) (EGLDisplay dpy, EGLConfig config,
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EGLint attribute, EGLint * value);
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} SDL_PrivateGLESData;
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/* OpenGLES functions */
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extern SDL_GLContext X11_GLES_CreateContext(_THIS, SDL_Window * window);
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extern XVisualInfo *X11_GLES_GetVisual(_THIS, Display * display, int screen);
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extern int X11_GLES_MakeCurrent(_THIS, SDL_Window * window,
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SDL_GLContext context);
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extern int X11_GLES_GetAttribute(_THIS, SDL_GLattr attrib, int *value);
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extern int X11_GLES_LoadLibrary(_THIS, const char *path);
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extern void *X11_GLES_GetProcAddress(_THIS, const char *proc);
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extern void X11_GLES_UnloadLibrary(_THIS);
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extern int X11_GLES_SetSwapInterval(_THIS, int interval);
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extern int X11_GLES_GetSwapInterval(_THIS);
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extern void X11_GLES_SwapWindow(_THIS, SDL_Window * window);
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extern void X11_GLES_DeleteContext(_THIS, SDL_GLContext context);
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