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 void fghChooseConfigEGL(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,
42 EGL_ALPHA_SIZE, (fgState.DisplayMode & GLUT_ALPHA) ? 1 : 0,
43 EGL_DEPTH_SIZE, (fgState.DisplayMode & GLUT_DEPTH) ? 1 : 0,
44 EGL_STENCIL_SIZE, (fgState.DisplayMode & GLUT_STENCIL) ? 1 : 0,
45 EGL_SAMPLE_BUFFERS, (fgState.DisplayMode & GLUT_MULTISAMPLE) ? 1 : 0,
46 EGL_SAMPLES, (fgState.DisplayMode & GLUT_MULTISAMPLE) ? fgState.SampleNumber : 0,
51 if (!eglChooseConfig(fgDisplay.pDisplay.egl.Display,
52 attribs, config, 1, &num_config))
53 fgError("eglChooseConfig: error %x\n", eglGetError());
57 * Initialize an EGL context for the current display.
59 void fghCreateNewContextEGL( SFG_Window* window ) {
62 EGLDisplay eglDisplay = fgDisplay.pDisplay.egl.Display;
63 EGLConfig eglConfig = window->Window.pContext.egl.Config;
65 /* Ensure OpenGLES 2.0 context */
66 static const EGLint ctx_attribs[] = {
67 #ifdef GL_ES_VERSION_2_0
68 EGL_CONTEXT_CLIENT_VERSION, 2,
69 #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
70 EGL_CONTEXT_CLIENT_VERSION, 1,
74 context = eglCreateContext(eglDisplay, eglConfig, EGL_NO_CONTEXT, ctx_attribs);
75 if (context == EGL_NO_CONTEXT) {
76 fgWarning("Cannot initialize EGL context, err=%x\n", eglGetError());
77 fghContextCreationError();
80 eglQueryContext(fgDisplay.pDisplay.egl.Display, context, EGL_CONTEXT_CLIENT_VERSION, &ver);
82 fgError("Wrong GLES major version: %d\n", ver);
84 window->Window.Context = context;
88 * Really opens a window when handle is available
90 void fghPlatformOpenWindowEGL( SFG_Window* window )
92 EGLDisplay display = fgDisplay.pDisplay.egl.Display;
93 EGLConfig config = window->Window.pContext.egl.Config;
95 EGLSurface surface = eglCreateWindowSurface(display, config, window->Window.Handle, NULL);
96 if (surface == EGL_NO_SURFACE)
97 fgError("Cannot create EGL window surface, err=%x\n", eglGetError());
98 if (eglMakeCurrent(display, surface, surface, window->Window.Context) == EGL_FALSE)
99 fgError("eglMakeCurrent: err=%x\n", eglGetError());
102 //eglQuerySurface(display, surface, EGL_WIDTH, &w);
103 //eglQuerySurface(display, surface, EGL_HEIGHT, &h);
105 window->Window.pContext.egl.Surface = surface;
109 * Closes a window, destroying the frame and OpenGL context
111 void fghPlatformCloseWindowEGL( SFG_Window* window )
113 eglMakeCurrent(fgDisplay.pDisplay.egl.Display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
114 if (window->Window.Context != EGL_NO_CONTEXT) {
115 eglDestroyContext(fgDisplay.pDisplay.egl.Display, window->Window.Context);
116 window->Window.Context = EGL_NO_CONTEXT;
119 if (window->Window.pContext.egl.Surface != EGL_NO_SURFACE) {
120 eglDestroySurface(fgDisplay.pDisplay.egl.Display, window->Window.pContext.egl.Surface);
121 window->Window.pContext.egl.Surface = EGL_NO_SURFACE;