2 * freeglut_display_android.c
4 * Window management methods for EGL
6 * Copyright (C) 2012 Sylvain Beucler
8 * Permission is hereby granted, free of charge, to any person obtaining a
9 * copy of this software and associated documentation files (the "Software"),
10 * to deal in the Software without restriction, including without limitation
11 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
12 * and/or sell copies of the Software, and to permit persons to whom the
13 * Software is furnished to do so, subject to the following conditions:
15 * The above copyright notice and this permission notice shall be included
16 * in all copies or substantial portions of the Software.
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
21 * PAWEL W. OLSZTA BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
22 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
23 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 #include <GL/freeglut.h>
27 #include "fg_internal.h"
29 int fghChooseConfig(EGLConfig* config) {
30 const EGLint attribs[] = {
31 EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
32 #ifdef GL_ES_VERSION_2_0
33 EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
34 #elif GL_VERSION_ES_CM_1_0 || GL_VERSION_ES_CL_1_0 || GL_VERSION_ES_CM_1_1 || GL_VERSION_ES_CL_1_1
35 EGL_RENDERABLE_TYPE, EGL_OPENGL_ES_BIT,
37 EGL_RENDERABLE_TYPE, EGL_OPENGL_BIT,
39 #ifdef TARGET_HOST_BLACKBERRY
40 /* Only 888 and 565 seem to work. Based on
41 http://qt.gitorious.org/qt/qtbase/source/893deb1a93021cdfabe038cdf1869de33a60cbc9:src/plugins/platforms/qnx/qqnxglcontext.cpp
42 That's all that is used, and that's what BlackBerry uses for their own internal OpenGL setup, so unless something else is determined, use it */
51 EGL_ALPHA_SIZE, (fgState.DisplayMode & GLUT_ALPHA) ? 1 : 0,
52 EGL_DEPTH_SIZE, (fgState.DisplayMode & GLUT_DEPTH) ? 1 : 0,
53 EGL_STENCIL_SIZE, (fgState.DisplayMode & GLUT_STENCIL) ? 1 : 0,
54 EGL_SAMPLE_BUFFERS, (fgState.DisplayMode & GLUT_MULTISAMPLE) ? 1 : 0,
55 EGL_SAMPLES, (fgState.DisplayMode & GLUT_MULTISAMPLE) ? fgState.SampleNumber : 0,
60 if (!eglChooseConfig(fgDisplay.pDisplay.egl.Display,
61 attribs, config, 1, &num_config)) {
62 fgWarning("eglChooseConfig: error %x\n", eglGetError());
70 * Initialize an EGL context for the current display.
72 EGLContext fghCreateNewContextEGL( SFG_Window* window ) {
75 EGLDisplay eglDisplay = fgDisplay.pDisplay.egl.Display;
76 EGLConfig eglConfig = window->Window.pContext.egl.Config;
78 /* Ensure OpenGLES 2.0 context */
79 static const EGLint ctx_attribs[] = {
80 #ifdef GL_ES_VERSION_2_0
81 EGL_CONTEXT_CLIENT_VERSION, 2,
82 #elif GL_VERSION_ES_CM_1_0 || GL_VERSION_ES_CL_1_0 || GL_VERSION_ES_CM_1_1 || GL_VERSION_ES_CL_1_1
83 EGL_CONTEXT_CLIENT_VERSION, 1,
87 context = eglCreateContext(eglDisplay, eglConfig, EGL_NO_CONTEXT, ctx_attribs);
88 if (context == EGL_NO_CONTEXT) {
89 fgWarning("Cannot initialize EGL context, err=%x\n", eglGetError());
90 fghContextCreationError();
93 eglQueryContext(fgDisplay.pDisplay.egl.Display, context, EGL_CONTEXT_CLIENT_VERSION, &ver);
94 #ifdef GL_ES_VERSION_2_0
99 fgError("Wrong GLES major version: %d\n", ver);
104 void fgPlatformSetWindow ( SFG_Window *window )
106 if ( window != fgStructure.CurrentWindow && window) {
107 if (eglMakeCurrent(fgDisplay.pDisplay.egl.Display,
108 window->Window.pContext.egl.Surface,
109 window->Window.pContext.egl.Surface,
110 window->Window.Context) == EGL_FALSE)
111 fgError("eglMakeCurrent: err=%x\n", eglGetError());
116 * Really opens a window when handle is available
118 void fghPlatformOpenWindowEGL( SFG_Window* window )
120 EGLDisplay display = fgDisplay.pDisplay.egl.Display;
121 EGLConfig config = window->Window.pContext.egl.Config;
123 EGLSurface surface = eglCreateWindowSurface(display, config, window->Window.Handle, NULL);
124 if (surface == EGL_NO_SURFACE)
125 fgError("Cannot create EGL window surface, err=%x\n", eglGetError());
126 window->Window.pContext.egl.Surface = surface;
128 fgPlatformSetWindow(window);
131 /* eglQuerySurface(display, surface, EGL_WIDTH, &w); */
132 /* eglQuerySurface(display, surface, EGL_HEIGHT, &h); */
137 * Closes a window, destroying the frame and OpenGL context
139 void fghPlatformCloseWindowEGL( SFG_Window* window )
141 /* Based on fg_window_mswin fgPlatformCloseWindow */
142 if( fgStructure.CurrentWindow == window )
143 eglMakeCurrent(fgDisplay.pDisplay.egl.Display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
145 if (window->Window.Context != EGL_NO_CONTEXT) {
146 /* Step through the list of windows. If the rendering context is not being used by another window, then delete it */
148 GLboolean used = GL_FALSE;
151 for( iter = (SFG_Window*)fgStructure.Windows.First;
152 iter && used == GL_FALSE;
153 iter = (SFG_Window*)iter->Node.Next)
155 if( (iter->Window.Context == window->Window.Context) &&
161 eglDestroyContext(fgDisplay.pDisplay.egl.Display, window->Window.Context);
163 window->Window.Context = EGL_NO_CONTEXT;
166 if (window->Window.pContext.egl.Surface != EGL_NO_SURFACE) {
167 eglDestroySurface(fgDisplay.pDisplay.egl.Display, window->Window.pContext.egl.Surface);
168 window->Window.pContext.egl.Surface = EGL_NO_SURFACE;