1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/src/drivers/video_egl.c	Sat Mar 03 00:17:36 2012 +1000
     1.3 @@ -0,0 +1,168 @@
     1.4 +/**
     1.5 + * $Id$
     1.6 + *
     1.7 + * Window management using EGL.
     1.8 + *
     1.9 + * Copyright (c) 2012 Nathan Keynes.
    1.10 + *
    1.11 + * This program is free software; you can redistribute it and/or modify
    1.12 + * it under the terms of the GNU General Public License as published by
    1.13 + * the Free Software Foundation; either version 2 of the License, or
    1.14 + * (at your option) any later version.
    1.15 + *
    1.16 + * This program is distributed in the hope that it will be useful,
    1.17 + * but WITHOUT ANY WARRANTY; without even the implied warranty of
    1.18 + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    1.19 + * GNU General Public License for more details.
    1.20 + */
    1.21 +
    1.22 +#include "lxdream.h"
    1.23 +#include "display.h"
    1.24 +#include "video_egl.h"
    1.25 +#include "video_gl.h"
    1.26 +#include "pvr2/pvr2.h"
    1.27 +#include "pvr2/glutil.h"
    1.28 +
    1.29 +static const char *getEGLErrorString( EGLint code )
    1.30 +{
    1.31 +    switch( code ) {
    1.32 +    case EGL_SUCCESS: return "OK";
    1.33 +    case EGL_NOT_INITIALIZED: return "EGL not initialized";
    1.34 +    case EGL_BAD_ACCESS: return "Bad access";
    1.35 +    case EGL_BAD_ALLOC: return "Allocation failed";
    1.36 +    case EGL_BAD_ATTRIBUTE: return "Bad attribute";
    1.37 +    case EGL_BAD_CONTEXT: return "Bad context";
    1.38 +    case EGL_BAD_CONFIG: return "Bad config";
    1.39 +    case EGL_BAD_CURRENT_SURFACE: return "Bad current surface";
    1.40 +    case EGL_BAD_DISPLAY: return "Bad display";
    1.41 +    case EGL_BAD_MATCH: return "Bad match";
    1.42 +    case EGL_BAD_PARAMETER: return "Bad parameter";
    1.43 +    case EGL_BAD_NATIVE_PIXMAP: return "Bad native pixmap";
    1.44 +    case EGL_BAD_NATIVE_WINDOW: return "Bad native window";
    1.45 +    default: return "Unknown error";
    1.46 +    }
    1.47 +}
    1.48 +
    1.49 +
    1.50 +static void logEGLError(const char *msg)
    1.51 +{
    1.52 +    EGLint error = eglGetError();
    1.53 +    const char *errorStr = getEGLErrorString(error);
    1.54 +
    1.55 +    ERROR( "%s: %s (%x)", msg, errorStr, error );
    1.56 +}
    1.57 +
    1.58 +static const EGLint RGB888_attributes[] = {
    1.59 +        EGL_RED_SIZE,       8,
    1.60 +        EGL_GREEN_SIZE,     8,
    1.61 +        EGL_BLUE_SIZE,      8,
    1.62 +        EGL_DEPTH_SIZE,     16,
    1.63 +        EGL_STENCIL_SIZE,   8,
    1.64 +        EGL_SURFACE_TYPE,   EGL_WINDOW_BIT,
    1.65 +        EGL_RENDERABLE_TYPE,EGL_OPENGL_ES2_BIT,
    1.66 +        EGL_NONE, EGL_NONE };
    1.67 +
    1.68 +static const EGLint RGB565_attributes[] = {
    1.69 +        EGL_RED_SIZE,       5,
    1.70 +        EGL_GREEN_SIZE,     6,
    1.71 +        EGL_BLUE_SIZE,      5,
    1.72 +        EGL_DEPTH_SIZE,     16,
    1.73 +        EGL_STENCIL_SIZE,   8,
    1.74 +        EGL_SURFACE_TYPE,   EGL_WINDOW_BIT,
    1.75 +        EGL_RENDERABLE_TYPE,EGL_OPENGL_ES2_BIT,
    1.76 +        EGL_NONE, EGL_NONE };
    1.77 +
    1.78 +static const EGLint context_attributes[] = {
    1.79 +        EGL_CONTEXT_CLIENT_VERSION, 2,
    1.80 +        EGL_NONE, EGL_NONE };
    1.81 +
    1.82 +static EGLDisplay display;
    1.83 +static EGLContext context = EGL_NO_CONTEXT;
    1.84 +static EGLSurface surface = EGL_NO_SURFACE;
    1.85 +static gboolean fbo_created = FALSE;
    1.86 +
    1.87 +gboolean video_egl_set_window(EGLNativeWindowType window, int width, int height, int format)
    1.88 +{
    1.89 +    EGLConfig config;
    1.90 +    EGLint num_config, major = 0, minor = 0;
    1.91 +    const EGLint *attribute_list;
    1.92 +
    1.93 +    display = eglGetDisplay(EGL_DEFAULT_DISPLAY);
    1.94 +    if( eglInitialize(display, &major, &minor) != EGL_TRUE ) {
    1.95 +        logEGLError( "Unable to initialise EGL display" );
    1.96 +        return FALSE;
    1.97 +    }
    1.98 +
    1.99 +    if( format == COLFMT_RGB565 || format == COLFMT_BGRA1555 ) {
   1.100 +        attribute_list = RGB565_attributes;
   1.101 +    } else {
   1.102 +        attribute_list = RGB888_attributes;
   1.103 +    }
   1.104 +
   1.105 +
   1.106 +    eglChooseConfig(display, attribute_list, &config, 1, &num_config);
   1.107 +
   1.108 +    context = eglCreateContext(display, config, EGL_NO_CONTEXT, context_attributes);
   1.109 +    if( context == EGL_NO_CONTEXT ) {
   1.110 +        logEGLError( "Unable to create EGL context" );
   1.111 +        video_egl_clear_window();
   1.112 +        return FALSE;
   1.113 +    }
   1.114 +
   1.115 +    surface = eglCreateWindowSurface(display, config, window, NULL);
   1.116 +    if( surface == EGL_NO_SURFACE ) {
   1.117 +        logEGLError( "Unable to create EGL surface" );
   1.118 +        video_egl_clear_window();
   1.119 +        return FALSE;
   1.120 +    }
   1.121 +
   1.122 +    if( eglMakeCurrent( display, surface, surface, context ) == EGL_FALSE ) {
   1.123 +        video_egl_clear_window();
   1.124 +        return FALSE;
   1.125 +    }
   1.126 +
   1.127 +    if( gl_fbo_is_supported() ) {
   1.128 +        display_gl_driver.capabilities.has_gl = TRUE;
   1.129 +        gl_fbo_init(&display_egl_driver);
   1.130 +        gl_vbo_init(&display_egl_driver);
   1.131 +        fbo_created = TRUE;
   1.132 +    } else {
   1.133 +        ERROR( "Display does not support FBO" );
   1.134 +        video_egl_clear_window();
   1.135 +        return FALSE;
   1.136 +    }
   1.137 +    pvr2_setup_gl_context();
   1.138 +    INFO( "Initialised EGL %d.%d\n", major, minor );
   1.139 +    return TRUE;
   1.140 +}
   1.141 +
   1.142 +void video_egl_clear_window()
   1.143 +{
   1.144 +    if( fbo_created ) {
   1.145 +        gl_fbo_shutdown();
   1.146 +        fbo_created = FALSE;
   1.147 +    }
   1.148 +    eglMakeCurrent(display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
   1.149 +    if( surface != EGL_NO_SURFACE )  {
   1.150 +        eglDestroySurface(display, surface);
   1.151 +        surface = EGL_NO_SURFACE;
   1.152 +    }
   1.153 +    if( context != EGL_NO_CONTEXT ) {
   1.154 +        eglDestroyContext(display, context);
   1.155 +        context = EGL_NO_CONTEXT;
   1.156 +    }
   1.157 +    eglTerminate(display);
   1.158 +}
   1.159 +
   1.160 +
   1.161 +
   1.162 +/**
   1.163 + * Minimal init and shutdown. The real work is done from set_window
   1.164 + */
   1.165 +struct display_driver display_egl_driver = {
   1.166 +        "egl", N_("OpenGLES driver"), NULL, NULL,
   1.167 +        NULL, NULL, NULL,
   1.168 +        NULL, NULL, NULL, NULL,
   1.169 +        gl_load_frame_buffer, gl_display_render_buffer, gl_display_blank,
   1.170 +        NULL, gl_read_render_buffer, NULL, NULL
   1.171 +};