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+ GNU GENERAL PUBLIC LICENSE
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+
+ END OF TERMS AND CONDITIONS
+
+ How to Apply These Terms to Your New Programs
+
+ If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+ To do so, attach the following notices to the program. It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+ <one line to give the program's name and a brief idea of what it does.>
+ Copyright (C) <year> <name of author>
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+ If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+ <program> Copyright (C) <year> <name of author>
+ This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+ This is free software, and you are welcome to redistribute it
+ under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License. Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+ You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<http://www.gnu.org/licenses/>.
+
+ The GNU General Public License does not permit incorporating your program
+into proprietary programs. If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library. If this is what you want to do, use the GNU Lesser General
+Public License instead of this License. But first, please read
+<http://www.gnu.org/philosophy/why-not-lgpl.html>.
--- /dev/null
+ GNU LESSER GENERAL PUBLIC LICENSE
+ Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+
+ This version of the GNU Lesser General Public License incorporates
+the terms and conditions of version 3 of the GNU General Public
+License, supplemented by the additional permissions listed below.
+
+ 0. Additional Definitions.
+
+ As used herein, "this License" refers to version 3 of the GNU Lesser
+General Public License, and the "GNU GPL" refers to version 3 of the GNU
+General Public License.
+
+ "The Library" refers to a covered work governed by this License,
+other than an Application or a Combined Work as defined below.
+
+ An "Application" is any work that makes use of an interface provided
+by the Library, but which is not otherwise based on the Library.
+Defining a subclass of a class defined by the Library is deemed a mode
+of using an interface provided by the Library.
+
+ A "Combined Work" is a work produced by combining or linking an
+Application with the Library. The particular version of the Library
+with which the Combined Work was made is also called the "Linked
+Version".
+
+ The "Minimal Corresponding Source" for a Combined Work means the
+Corresponding Source for the Combined Work, excluding any source code
+for portions of the Combined Work that, considered in isolation, are
+based on the Application, and not on the Linked Version.
+
+ The "Corresponding Application Code" for a Combined Work means the
+object code and/or source code for the Application, including any data
+and utility programs needed for reproducing the Combined Work from the
+Application, but excluding the System Libraries of the Combined Work.
+
+ 1. Exception to Section 3 of the GNU GPL.
+
+ You may convey a covered work under sections 3 and 4 of this License
+without being bound by section 3 of the GNU GPL.
+
+ 2. Conveying Modified Versions.
+
+ If you modify a copy of the Library, and, in your modifications, a
+facility refers to a function or data to be supplied by an Application
+that uses the facility (other than as an argument passed when the
+facility is invoked), then you may convey a copy of the modified
+version:
+
+ a) under this License, provided that you make a good faith effort to
+ ensure that, in the event an Application does not supply the
+ function or data, the facility still operates, and performs
+ whatever part of its purpose remains meaningful, or
+
+ b) under the GNU GPL, with none of the additional permissions of
+ this License applicable to that copy.
+
+ 3. Object Code Incorporating Material from Library Header Files.
+
+ The object code form of an Application may incorporate material from
+a header file that is part of the Library. You may convey such object
+code under terms of your choice, provided that, if the incorporated
+material is not limited to numerical parameters, data structure
+layouts and accessors, or small macros, inline functions and templates
+(ten or fewer lines in length), you do both of the following:
+
+ a) Give prominent notice with each copy of the object code that the
+ Library is used in it and that the Library and its use are
+ covered by this License.
+
+ b) Accompany the object code with a copy of the GNU GPL and this license
+ document.
+
+ 4. Combined Works.
+
+ You may convey a Combined Work under terms of your choice that,
+taken together, effectively do not restrict modification of the
+portions of the Library contained in the Combined Work and reverse
+engineering for debugging such modifications, if you also do each of
+the following:
+
+ a) Give prominent notice with each copy of the Combined Work that
+ the Library is used in it and that the Library and its use are
+ covered by this License.
+
+ b) Accompany the Combined Work with a copy of the GNU GPL and this license
+ document.
+
+ c) For a Combined Work that displays copyright notices during
+ execution, include the copyright notice for the Library among
+ these notices, as well as a reference directing the user to the
+ copies of the GNU GPL and this license document.
+
+ d) Do one of the following:
+
+ 0) Convey the Minimal Corresponding Source under the terms of this
+ License, and the Corresponding Application Code in a form
+ suitable for, and under terms that permit, the user to
+ recombine or relink the Application with a modified version of
+ the Linked Version to produce a modified Combined Work, in the
+ manner specified by section 6 of the GNU GPL for conveying
+ Corresponding Source.
+
+ 1) Use a suitable shared library mechanism for linking with the
+ Library. A suitable mechanism is one that (a) uses at run time
+ a copy of the Library already present on the user's computer
+ system, and (b) will operate properly with a modified version
+ of the Library that is interface-compatible with the Linked
+ Version.
+
+ e) Provide Installation Information, but only if you would otherwise
+ be required to provide such information under section 6 of the
+ GNU GPL, and only to the extent that such information is
+ necessary to install and execute a modified version of the
+ Combined Work produced by recombining or relinking the
+ Application with a modified version of the Linked Version. (If
+ you use option 4d0, the Installation Information must accompany
+ the Minimal Corresponding Source and Corresponding Application
+ Code. If you use option 4d1, you must provide the Installation
+ Information in the manner specified by section 6 of the GNU GPL
+ for conveying Corresponding Source.)
+
+ 5. Combined Libraries.
+
+ You may place library facilities that are a work based on the
+Library side by side in a single library together with other library
+facilities that are not Applications and are not covered by this
+License, and convey such a combined library under terms of your
+choice, if you do both of the following:
+
+ a) Accompany the combined library with a copy of the same work based
+ on the Library, uncombined with any other library facilities,
+ conveyed under the terms of this License.
+
+ b) Give prominent notice with the combined library that part of it
+ is a work based on the Library, and explaining where to find the
+ accompanying uncombined form of the same work.
+
+ 6. Revised Versions of the GNU Lesser General Public License.
+
+ The Free Software Foundation may publish revised and/or new versions
+of the GNU Lesser General Public License from time to time. Such new
+versions will be similar in spirit to the present version, but may
+differ in detail to address new problems or concerns.
+
+ Each version is given a distinguishing version number. If the
+Library as you received it specifies that a certain numbered version
+of the GNU Lesser General Public License "or any later version"
+applies to it, you have the option of following the terms and
+conditions either of that published version or of any later version
+published by the Free Software Foundation. If the Library as you
+received it does not specify a version number of the GNU Lesser
+General Public License, you may choose any version of the GNU Lesser
+General Public License ever published by the Free Software Foundation.
+
+ If the Library as you received it specifies that a proxy can decide
+whether future versions of the GNU Lesser General Public License shall
+apply, that proxy's public statement of acceptance of any version is
+permanent authorization for you to choose that version for the
+Library.
--- /dev/null
+/* This file is part of SDL_gles - SDL addon for OpenGL|ES
+ * Copyright (C) 2010 Javier S. Pedro
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 3 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA or see <http://www.gnu.org/licenses/>.
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <dlfcn.h>
+#include <assert.h>
+
+#include <EGL/egl.h>
+
+#include <SDL.h>
+#include <SDL_syswm.h>
+
+#include "SDL_gles.h"
+
+typedef struct SDL_GLES_ContextPriv
+{
+ SDL_GLES_Context p;
+
+ EGLConfig egl_config;
+ EGLContext egl_context;
+} SDL_GLES_ContextPriv;
+
+static const char * default_libgl[] = {
+ [SDL_GLES_VERSION_1_1] = "/usr/lib/libGLES_CM.so",
+ [SDL_GLES_VERSION_2_0] = "/usr/lib/libGLESv2.so"
+};
+
+static SDL_GLES_Version gl_version = SDL_GLES_VERSION_NONE;
+static void* gl_handle = NULL;
+static EGLint egl_major, egl_minor;
+
+static Display *display = NULL;
+static EGLDisplay *egl_display = EGL_NO_DISPLAY;
+static EGLSurface egl_surface = EGL_NO_SURFACE;
+static EGLint attrib_list[] = {
+ EGL_BUFFER_SIZE, 0,
+ EGL_RED_SIZE, 0,
+ EGL_GREEN_SIZE, 0,
+ EGL_BLUE_SIZE, 0,
+ EGL_ALPHA_SIZE, 0,
+ EGL_CONFIG_CAVEAT, EGL_DONT_CARE,
+ EGL_CONFIG_ID, EGL_DONT_CARE,
+ EGL_DEPTH_SIZE, 0,
+ EGL_LEVEL, 0,
+ EGL_NATIVE_RENDERABLE, EGL_DONT_CARE,
+ EGL_NATIVE_VISUAL_TYPE, EGL_DONT_CARE,
+ EGL_SAMPLE_BUFFERS, 0,
+ EGL_SAMPLES, 0,
+ EGL_STENCIL_SIZE, 0,
+ EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
+ EGL_TRANSPARENT_TYPE, EGL_NONE,
+ EGL_TRANSPARENT_RED_VALUE, EGL_DONT_CARE,
+ EGL_TRANSPARENT_GREEN_VALUE,EGL_DONT_CARE,
+ EGL_TRANSPARENT_BLUE_VALUE, EGL_DONT_CARE,
+ EGL_NONE
+};
+static SDL_GLES_ContextPriv *cur_context = NULL;
+
+static const char * get_error_string(int error) {
+ switch (error) {
+ case EGL_SUCCESS:
+ return "EGL_SUCCESS";
+ case EGL_NOT_INITIALIZED:
+ return "EGL_NOT_INITIALIZED";
+ case EGL_BAD_ACCESS:
+ return "EGL_BAD_ACCESS";
+ case EGL_BAD_ALLOC:
+ return "EGL_BAD_ALLOC";
+ case EGL_BAD_ATTRIBUTE:
+ return "EGL_BAD_ATTRIBUTE";
+ case EGL_BAD_CONFIG:
+ return "EGL_BAD_CONFIG";
+ case EGL_BAD_CONTEXT:
+ return "EGL_BAD_CONTEXT";
+ case EGL_BAD_CURRENT_SURFACE:
+ return "EGL_BAD_CURRENT_SURFACE";
+ case EGL_BAD_DISPLAY:
+ return "EGL_BAD_DISPLAY";
+ case EGL_BAD_MATCH:
+ return "EGL_BAD_MATCH";
+ case EGL_BAD_NATIVE_PIXMAP:
+ return "EGL_BAD_NATIVE_PIXMAP";
+ case EGL_BAD_NATIVE_WINDOW:
+ return "EGL_BAD_NATIVE_WINDOW";
+ case EGL_BAD_PARAMETER:
+ return "EGL_BAD_PARAMETER";
+ case EGL_BAD_SURFACE:
+ return "EGL_BAD_SURFACE";
+ case EGL_CONTEXT_LOST:
+ return "EGL_CONTEXT_LOST";
+ default:
+ return "EGL_UNKNOWN_ERROR";
+ }
+}
+
+int SDL_GLES_LoadLibrary(const char *path)
+{
+ if (!path) {
+ path = getenv("SDL_VIDEO_GL_DRIVER");
+ if (!path) {
+ switch (gl_version) {
+ case SDL_GLES_VERSION_1_1:
+ case SDL_GLES_VERSION_2_0:
+ path = default_libgl[gl_version];
+ break;
+ default:
+ SDL_SetError("No GL version specific and SDL_VIDEO_GL_DRIVER set");
+ return -1;
+ }
+ }
+ }
+
+ /* Dynamically load the desired GL library */
+ gl_handle = dlopen(path, RTLD_LAZY|RTLD_GLOBAL);
+ if (!gl_handle) {
+ SDL_SetError("Failed to open GL library: %s (%s)", path, dlerror());
+ return -2;
+ }
+
+ return 0;
+}
+
+void* SDL_GLES_GetProcAddress(const char *proc)
+{
+ if (!gl_handle) return NULL;
+ return dlsym(gl_handle, proc);
+}
+
+int SDL_GLES_Init(SDL_GLES_Version version)
+{
+ SDL_SysWMinfo info;
+ EGLBoolean res;
+
+ SDL_VERSION(&info.version);
+ if (SDL_GetWMInfo(&info) != 1) {
+ SDL_SetError("SDL_gles is incompatible with this SDL version");
+ return -1;
+ }
+
+ display = info.info.x11.gfxdisplay;
+
+ egl_display = eglGetDisplay((EGLNativeDisplayType)display);
+ if (egl_display == EGL_NO_DISPLAY) {
+ SDL_SetError("EGL found no available displays");
+ return -2;
+ }
+
+ res = eglInitialize(egl_display, &egl_major, &egl_minor);
+ if (!res) {
+ SDL_SetError("EGL failed to initialize: %s",
+ get_error_string(eglGetError()));
+ return -2;
+ }
+
+ gl_version = version;
+ return 0;
+}
+
+void SDL_GLES_Quit()
+{
+ if (gl_handle) {
+ dlclose(gl_handle);
+ gl_handle = NULL;
+ }
+ if (egl_display != EGL_NO_DISPLAY) {
+ eglTerminate(egl_display);
+ egl_display = EGL_NO_DISPLAY;
+ }
+}
+
+int SDL_GLES_SetVideoMode()
+{
+ SDL_SysWMinfo info;
+
+ SDL_VERSION(&info.version);
+ if (SDL_GetWMInfo(&info) != 1) {
+ SDL_SetError("SDL_gles is incompatible with this SDL version");
+ return -1;
+ }
+
+ /* Destroy previous surface, if any. */
+ if (egl_surface != EGL_NO_SURFACE) {
+ eglDestroySurface(egl_display, egl_surface);
+ egl_surface = EGL_NO_SURFACE;
+ }
+
+ /* No current context? Quietly defer surface creation. */
+ if (!cur_context) {
+ return 0;
+ }
+
+ egl_surface = eglCreateWindowSurface(egl_display, cur_context->egl_config,
+ (EGLNativeWindowType)info.info.x11.window, NULL);
+ if (egl_surface == EGL_NO_SURFACE) {
+ SDL_SetError("EGL failed to create a window surface: %s",
+ get_error_string(eglGetError()));
+ return -2;
+ }
+
+ return 0;
+}
+
+SDL_GLES_Context* SDL_GLES_CreateContext(void)
+{
+ SDL_GLES_ContextPriv *context = malloc(sizeof(SDL_GLES_ContextPriv));
+ if (!context) {
+ SDL_Error(SDL_ENOMEM);
+ return NULL;
+ }
+
+ EGLBoolean res;
+ EGLConfig configs[1];
+ EGLint num_config;
+
+ res = eglChooseConfig(egl_display, attrib_list, configs, 1, &num_config);
+ if (!res || num_config < 1) {
+ SDL_SetError("EGL failed to find any valid config with required attributes: %s",
+ get_error_string(eglGetError()));
+ return NULL;
+ }
+
+ context->egl_config = configs[0];
+ context->egl_context = eglCreateContext(egl_display, configs[0],
+ EGL_NO_CONTEXT, NULL);
+
+ return (SDL_GLES_Context*) context;
+}
+
+void SDL_GLES_DeleteContext(SDL_GLES_Context* c)
+{
+ SDL_GLES_ContextPriv *context = (SDL_GLES_ContextPriv*)c;
+ if (!context) return;
+
+ if (cur_context == context) {
+ /* Deleting the active context */
+ SDL_GLES_MakeCurrent(NULL);
+ }
+
+ eglDestroyContext(egl_display, context->egl_context);
+ free(context);
+}
+
+int SDL_GLES_MakeCurrent(SDL_GLES_Context* c)
+{
+ SDL_GLES_ContextPriv *context = (SDL_GLES_ContextPriv*)c;
+ int res;
+
+ if (context) {
+ cur_context = context;
+
+ res = SDL_GLES_SetVideoMode();
+ if (res != 0) return res; /* Surface (re-)creation failed. */
+
+ res = eglMakeCurrent(egl_display, egl_surface, egl_surface,
+ context->egl_context);
+
+ if (!res) {
+ SDL_SetError("EGL failed to make current: %s",
+ get_error_string(eglGetError()));
+ cur_context = NULL;
+ return -2;
+ }
+ } else {
+ eglMakeCurrent(egl_display, EGL_NO_SURFACE, EGL_NO_SURFACE,
+ EGL_NO_CONTEXT);
+ cur_context = NULL;
+ SDL_GLES_SetVideoMode(); /* Will clear current surface. */
+ }
+
+ // TODO Update attrib_list
+
+ switch (gl_version) {
+ case SDL_GLES_VERSION_1_1:
+ case SDL_GLES_VERSION_2_0:
+ res = eglBindAPI(EGL_OPENGL_ES_API);
+ if (!res) {
+ SDL_SetError("EGL failed to bind the required API: %s",
+ get_error_string(eglGetError()));
+ return -2;
+ }
+ break;
+ default:
+ break;
+ }
+
+ return 0;
+}
+
+void SDL_GLES_SwapBuffers()
+{
+ eglSwapBuffers(egl_display, egl_surface);
+}
+
projects / sdlhildon / commitdiff