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westeros-test.cpp
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westeros-test.cpp
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/*
* If not stated otherwise in this file or this component's Licenses.txt file the
* following copyright and licenses apply:
*
* Copyright 2016 RDK Management
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <stdlib.h>
#include <stdio.h>
#include <memory.h>
#include <assert.h>
#include <errno.h>
#include <unistd.h>
#include <signal.h>
#include <termios.h>
#include <sys/time.h>
#include <EGL/egl.h>
#include <EGL/eglext.h>
#include <GLES2/gl2.h>
#include <GLES2/gl2ext.h>
#include "wayland-client.h"
#include "wayland-egl.h"
#include "simpleshell-client-protocol.h"
static void registryHandleGlobal(void *data,
struct wl_registry *registry, uint32_t id,
const char *interface, uint32_t version);
static void registryHandleGlobalRemove(void *data,
struct wl_registry *registry,
uint32_t name);
static const struct wl_registry_listener registryListener =
{
registryHandleGlobal,
registryHandleGlobalRemove
};
static void shellSurfaceId(void *data,
struct wl_simple_shell *wl_simple_shell,
struct wl_surface *surface,
uint32_t surfaceId);
static void shellSurfaceCreated(void *data,
struct wl_simple_shell *wl_simple_shell,
uint32_t surfaceId,
const char *name);
static void shellSurfaceDestroyed(void *data,
struct wl_simple_shell *wl_simple_shell,
uint32_t surfaceId,
const char *name);
static void shellSurfaceStatus(void *data,
struct wl_simple_shell *wl_simple_shell,
uint32_t surfaceId,
const char *name,
uint32_t visible,
int32_t x,
int32_t y,
int32_t width,
int32_t height,
wl_fixed_t opacity,
wl_fixed_t zorder);
static void shellGetSurfacesDone(void *data,
struct wl_simple_shell *wl_simple_shell);
static const struct wl_simple_shell_listener shellListener =
{
shellSurfaceId,
shellSurfaceCreated,
shellSurfaceDestroyed,
shellSurfaceStatus,
shellGetSurfacesDone
};
typedef enum _InputState
{
InputState_main,
InputState_attribute,
} InputState;
typedef enum _Attribute
{
Attribute_position,
Attribute_size,
Attribute_visibility,
Attribute_opacity,
Attribute_zorder
} Attribute;
typedef struct _AppCtx
{
struct wl_display *display;
struct wl_registry *registry;
struct wl_shm *shm;
struct wl_compositor *compositor;
struct wl_simple_shell *shell;
struct wl_seat *seat;
struct wl_keyboard *keyboard;
struct wl_pointer *pointer;
struct wl_touch *touch;
struct wl_surface *surface;
struct wl_egl_window *native;
struct wl_callback *frameCallback;
EGLDisplay eglDisplay;
EGLConfig eglConfig;
EGLSurface eglSurfaceWindow;
EGLContext eglContext;
EGLImageKHR eglImage;
EGLNativePixmapType eglPixmap;
bool getShell;
InputState inputState;
Attribute attribute;
int planeX;
int planeY;
int planeWidth;
int planeHeight;
uint32_t surfaceIdOther;
uint32_t surfaceIdCurrent;
float surfaceOpacity;
float surfaceZOrder;
bool surfaceVisible;
int surfaceX;
int surfaceY;
int surfaceWidth;
int surfaceHeight;
int surfaceDX;
int surfaceDY;
int surfaceDWidth;
int surfaceDHeight;
struct
{
GLuint rotation_uniform;
GLuint pos;
GLuint col;
} gl;
long long startTime;
long long currTime;
} AppCtx;
static void drawFrame( AppCtx *ctx );
static bool setupEGL( AppCtx *ctx );
static void termEGL( AppCtx *ctx );
static bool createSurface( AppCtx *ctx );
static void resizeSurface( AppCtx *ctx, int dx, int dy, int width, int height );
static void destroySurface( AppCtx *ctx );
static bool setupGL( AppCtx *ctx );
static bool renderGL( AppCtx *ctx );
int g_running= 0;
int g_log= 0;
static void signalHandler(int signum)
{
printf("signalHandler: signum %d\n", signum);
g_running = 0;
}
static long long currentTimeMillis()
{
long long timeMillis;
struct timeval tv;
gettimeofday(&tv, NULL);
timeMillis = tv.tv_sec * 1000 + tv.tv_usec / 1000;
return timeMillis;
}
static void shmFormat(void *data, struct wl_shm *wl_shm, uint32_t format)
{
AppCtx *ctx = (AppCtx*)data;
printf("shm format: %X\n", format);
}
struct wl_shm_listener shmListener = {
shmFormat
};
static void seatCapabilities( void *data, struct wl_seat *seat, uint32_t capabilities )
{
AppCtx *ctx = (AppCtx*)data;
printf("seat %p caps: %X\n", seat, capabilities );
if ( capabilities & WL_SEAT_CAPABILITY_KEYBOARD )
{
printf(" seat has keyboard\n");
ctx->keyboard= wl_seat_get_keyboard( ctx->seat );
printf(" keyboard %p\n", ctx->keyboard );
}
if ( capabilities & WL_SEAT_CAPABILITY_POINTER )
{
printf(" seat has pointer\n");
ctx->pointer= wl_seat_get_pointer( ctx->seat );
printf(" pointer %p\n", ctx->pointer );
}
if ( capabilities & WL_SEAT_CAPABILITY_TOUCH )
{
printf(" seat has touch\n");
ctx->touch= wl_seat_get_touch( ctx->seat );
printf(" touch %p\n", ctx->touch );
}
}
static void seatName( void *data, struct wl_seat *seat, const char *name )
{
AppCtx *ctx = (AppCtx*)data;
printf("seat %p name: %s\n", seat, name);
}
static const struct wl_seat_listener seatListener = {
seatCapabilities,
seatName
};
static void registryHandleGlobal(void *data,
struct wl_registry *registry, uint32_t id,
const char *interface, uint32_t version)
{
AppCtx *ctx = (AppCtx*)data;
int len;
printf("westeros-test: registry: id %d interface (%s) version %d\n", id, interface, version );
len= strlen(interface);
if ( (len==6) && !strncmp(interface, "wl_shm", len)) {
ctx->shm= (struct wl_shm*)wl_registry_bind(registry, id, &wl_shm_interface, 1);
printf("shm %p\n", ctx->shm);
wl_shm_add_listener(ctx->shm, &shmListener, ctx);
}
else if ( (len==13) && !strncmp(interface, "wl_compositor", len) ) {
ctx->compositor= (struct wl_compositor*)wl_registry_bind(registry, id, &wl_compositor_interface, 1);
printf("compositor %p\n", ctx->compositor);
}
else if ( (len==7) && !strncmp(interface, "wl_seat", len) ) {
ctx->seat= (struct wl_seat*)wl_registry_bind(registry, id, &wl_seat_interface, 4);
printf("seat %p\n", ctx->seat);
wl_seat_add_listener(ctx->seat, &seatListener, ctx);
}
else if ( (len==15) && !strncmp(interface, "wl_simple_shell", len) ) {
if ( ctx->getShell ) {
ctx->shell= (struct wl_simple_shell*)wl_registry_bind(registry, id, &wl_simple_shell_interface, 1);
printf("shell %p\n", ctx->shell );
wl_simple_shell_add_listener(ctx->shell, &shellListener, ctx);
}
}
}
static void registryHandleGlobalRemove(void *data,
struct wl_registry *registry,
uint32_t name)
{
}
static void shellSurfaceId(void *data,
struct wl_simple_shell *wl_simple_shell,
struct wl_surface *surface,
uint32_t surfaceId)
{
AppCtx *ctx = (AppCtx*)data;
char name[32];
sprintf( name, "westeros-test-surface-%x", surfaceId );
printf("shell: surface created: %p id %x\n", surface, surfaceId);
wl_simple_shell_set_name( ctx->shell, surfaceId, name );
wl_simple_shell_set_geometry( ctx->shell, surfaceId, ctx->surfaceX, ctx->surfaceY, ctx->surfaceWidth, ctx->surfaceHeight );
}
static void shellSurfaceCreated(void *data,
struct wl_simple_shell *wl_simple_shell,
uint32_t surfaceId,
const char *name)
{
AppCtx *ctx = (AppCtx*)data;
printf("shell: surface created: %x name: %s\n", surfaceId, name);
ctx->surfaceIdOther= ctx->surfaceIdCurrent;
ctx->surfaceIdCurrent= surfaceId;
wl_simple_shell_get_status( ctx->shell, ctx->surfaceIdCurrent );
printf("shell: surfaceCurrent: %x surfaceOther: %x\n", ctx->surfaceIdCurrent, ctx->surfaceIdOther);
}
static void shellSurfaceDestroyed(void *data,
struct wl_simple_shell *wl_simple_shell,
uint32_t surfaceId,
const char *name)
{
AppCtx *ctx = (AppCtx*)data;
printf("shell: surface destroyed: %x name: %s\n", surfaceId, name);
if ( ctx->surfaceIdCurrent == surfaceId )
{
ctx->surfaceIdCurrent= ctx->surfaceIdOther;
ctx->surfaceIdOther= 0;
wl_simple_shell_get_status( ctx->shell, ctx->surfaceIdCurrent );
}
if ( ctx->surfaceIdOther == surfaceId )
{
ctx->surfaceIdOther= 0;
}
printf("shell: surfaceCurrent: %x surfaceOther: %x\n", ctx->surfaceIdCurrent, ctx->surfaceIdOther);
}
static void shellSurfaceStatus(void *data,
struct wl_simple_shell *wl_simple_shell,
uint32_t surfaceId,
const char *name,
uint32_t visible,
int32_t x,
int32_t y,
int32_t width,
int32_t height,
wl_fixed_t opacity,
wl_fixed_t zorder)
{
AppCtx *ctx = (AppCtx*)data;
printf("shell: surface: %x name: %s\n", surfaceId, name);
printf("shell: position (%d,%d,%d,%d) visible %d opacity %f zorder %f\n",
x, y, width, height, visible, wl_fixed_to_double(opacity), wl_fixed_to_double(zorder) );
ctx->surfaceVisible= visible;
ctx->surfaceX= x;
ctx->surfaceY= y;
ctx->surfaceWidth= width;
ctx->surfaceHeight= height;
ctx->surfaceOpacity= wl_fixed_to_double(opacity);
ctx->surfaceZOrder= wl_fixed_to_double(zorder);
}
static void shellGetSurfacesDone(void *data,
struct wl_simple_shell *wl_simple_shell)
{
AppCtx *ctx = (AppCtx*)data;
printf("shell: get all surfaces done\n");
}
#define NON_BLOCKING_ENABLED (0)
#define NON_BLOCKING_DISABLED (1)
static void setBlockingMode(int blockingState )
{
struct termios ttystate;
int mask, bits;
mask= (blockingState == NON_BLOCKING_ENABLED) ? ~(ICANON|ECHO) : -1;
bits= (blockingState == NON_BLOCKING_ENABLED) ? 0 : (ICANON|ECHO);
// Obtain the current terminal state and alter the attributes to achieve
// the requested blocking behaviour
tcgetattr(STDIN_FILENO, &ttystate);
ttystate.c_lflag= ((ttystate.c_lflag & mask) | bits);
if (blockingState == NON_BLOCKING_ENABLED)
{
ttystate.c_cc[VMIN]= 1;
}
tcsetattr(STDIN_FILENO, TCSANOW, &ttystate);
}
static int kbhit()
{
struct timeval tv;
fd_set fds;
tv.tv_sec = 0;
tv.tv_usec = 0;
FD_ZERO(&fds);
FD_SET(STDIN_FILENO, &fds); //STDIN_FILENO is 0
select(STDIN_FILENO+1, &fds, NULL, NULL, &tv);
return FD_ISSET(STDIN_FILENO, &fds);
}
static void adjustAttribute( AppCtx *ctx, int c )
{
switch( ctx->attribute )
{
case Attribute_position:
switch( c )
{
case 0x41: //UP
--ctx->surfaceDY;
break;
case 0x42: //DOWN
++ctx->surfaceDY;
break;
case 0x43: //RIGHT
++ctx->surfaceDX;
break;
case 0x44: //LEFT
--ctx->surfaceDX;
break;
}
break;
case Attribute_size:
switch( c )
{
case 0x41: //UP
--ctx->surfaceDHeight;
break;
case 0x42: //DOWN
++ctx->surfaceDHeight;
break;
case 0x43: //RIGHT
++ctx->surfaceDWidth;
break;
case 0x44: //LEFT
--ctx->surfaceDWidth;
break;
}
break;
case Attribute_visibility:
switch( c )
{
case 0x41: //UP
case 0x43: //RIGHT
case 0x42: //DOWN
case 0x44: //LEFT
ctx->surfaceVisible= !ctx->surfaceVisible;
wl_simple_shell_set_visible( ctx->shell, ctx->surfaceIdCurrent, (ctx->surfaceVisible ? 1 : 0) );
break;
}
break;
case Attribute_opacity:
switch( c )
{
case 0x41: //UP
case 0x43: //RIGHT
ctx->surfaceOpacity += 0.1;
if ( ctx->surfaceOpacity > 1.0 )
{
ctx->surfaceOpacity= 1.0;
}
wl_simple_shell_set_opacity( ctx->shell, ctx->surfaceIdCurrent, wl_fixed_from_double(ctx->surfaceOpacity) );
break;
case 0x42: //DOWN
case 0x44: //LEFT
ctx->surfaceOpacity -= 0.1;
if ( ctx->surfaceOpacity < 0.0 )
{
ctx->surfaceOpacity= 0.0;
}
wl_simple_shell_set_opacity( ctx->shell, ctx->surfaceIdCurrent, wl_fixed_from_double(ctx->surfaceOpacity) );
break;
}
break;
case Attribute_zorder:
switch( c )
{
case 0x41: //UP
case 0x43: //RIGHT
ctx->surfaceZOrder += 0.1;
if ( ctx->surfaceZOrder > 1.0 )
{
ctx->surfaceZOrder= 1.0;
}
wl_simple_shell_set_zorder( ctx->shell, ctx->surfaceIdCurrent, wl_fixed_from_double(ctx->surfaceZOrder) );
break;
case 0x42: //DOWN
case 0x44: //LEFT
ctx->surfaceZOrder -= 0.1;
if ( ctx->surfaceZOrder < 0.0 )
{
ctx->surfaceZOrder= 0.0;
}
wl_simple_shell_set_zorder( ctx->shell, ctx->surfaceIdCurrent, wl_fixed_from_double(ctx->surfaceZOrder) );
break;
}
break;
}
}
static void processInputMain( AppCtx *ctx, int c )
{
switch( c )
{
case 0x1B:
c= fgetc(stdin);
if ( c == 0x5B )
{
c= fgetc(stdin);
switch( c )
{
case 0x41: //UP
case 0x42: //DOWN
case 0x43: //RIGHT
case 0x44: // LEFT
if ( ctx->surfaceIdCurrent )
{
adjustAttribute( ctx, c );
}
break;
}
}
break;
case 'a':
ctx->inputState= InputState_attribute;
printf("attribute: (p) osition, (s) ize, (v) isible, (o) pacity, (z) order (x) back to main\n");
break;
case 's':
if ( ctx->surfaceIdCurrent )
{
wl_simple_shell_get_status( ctx->shell, ctx->surfaceIdCurrent );
}
break;
case 'n':
if ( ctx->surfaceIdOther )
{
uint32_t temp= ctx->surfaceIdCurrent;
ctx->surfaceIdCurrent= ctx->surfaceIdOther;
ctx->surfaceIdOther= temp;
printf("shell: surfaceCurrent: %x surfaceOther: %x\n", ctx->surfaceIdCurrent, ctx->surfaceIdOther);
wl_simple_shell_get_status( ctx->shell, ctx->surfaceIdCurrent );
}
break;
case 'l':
printf("get all surfaces:\n");
wl_simple_shell_get_surfaces( ctx->shell );
break;
case 'r':
ctx->planeWidth= (ctx->planeWidth == 1280) ? 640 : 1280;
ctx->planeHeight= (ctx->planeHeight == 720) ? 360 : 720;
printf("resize egl window to (%d,%d)\n", ctx->planeWidth, ctx->planeHeight );
resizeSurface( ctx, 0, 0, ctx->planeWidth, ctx->planeHeight);
break;
}
}
static void processInputAttribute( AppCtx *ctx, int c )
{
switch( c )
{
case 'p':
ctx->attribute= Attribute_position;
break;
case 's':
ctx->attribute= Attribute_size;
break;
case 'v':
ctx->attribute= Attribute_visibility;
break;
case 'o':
ctx->attribute= Attribute_opacity;
break;
case 'z':
ctx->attribute= Attribute_zorder;
break;
default:
case 'x':
break;
}
ctx->inputState= InputState_main;
}
static void processInput( AppCtx *ctx, int c )
{
switch( ctx->inputState )
{
case InputState_main:
processInputMain( ctx, c );
break;
case InputState_attribute:
processInputAttribute( ctx, c );
break;
}
}
static void showUsage()
{
printf("usage:\n");
printf(" westeros_test [options]\n" );
printf("where [options] are:\n" );
printf(" --delay <delay> : render loop delay\n" );
printf(" --shell : use wl_simple_shell protocol\n" );
printf(" --display <name> : wayland display to connect to\n" );
printf(" --noframe : don't pace rendering with frame requests\n" );
printf(" -? : show usage\n" );
printf("\n" );
}
static void redraw( void *data, struct wl_callback *callback, uint32_t time )
{
AppCtx *ctx= (AppCtx*)data;
if ( g_log ) printf("redraw: time %d\n", time);
wl_callback_destroy( callback );
drawFrame( ctx );
wl_display_flush( ctx->display );
}
static struct wl_callback_listener frameListener=
{
redraw
};
static void drawFrame( AppCtx *ctx )
{
if ( ctx->surfaceDX || ctx->surfaceDY || ctx->surfaceDWidth || ctx->surfaceDHeight )
{
ctx->surfaceX += ctx->surfaceDX;
ctx->surfaceY += ctx->surfaceDY;
ctx->surfaceWidth += ctx->surfaceDWidth;
ctx->surfaceHeight += ctx->surfaceDHeight;
wl_simple_shell_set_geometry( ctx->shell, ctx->surfaceIdCurrent,
ctx->surfaceX, ctx->surfaceY, ctx->surfaceWidth, ctx->surfaceHeight );
}
renderGL(ctx);
ctx->frameCallback= wl_surface_frame( ctx->surface );
wl_callback_add_listener( ctx->frameCallback, &frameListener, ctx );
eglSwapBuffers(ctx->eglDisplay, ctx->eglSurfaceWindow);
}
#define NUM_EVENTS (20)
int main( int argc, char** argv)
{
int nRC= 0;
AppCtx ctx;
struct sigaction sigint;
struct wl_display *display= 0;
struct wl_registry *registry= 0;
int count;
int delay= 16667;
const char *display_name= 0;
bool paceRendering= true;
EGLBoolean swapok;
printf("westeros_test: v1.0\n" );
memset( &ctx, 0, sizeof(AppCtx) );
for( int i= 1; i < argc; ++i )
{
if ( !strcmp( (const char*)argv[i], "--delay") )
{
printf("got delay: i %d argc %d\n", i, argc );
if ( i+1 < argc )
{
int v= atoi(argv[++i]);
printf("v=%d\n", v);
if ( v > 0 )
{
delay= v;
printf("using delay=%d\n", delay );
}
}
}
else if (!strcmp( (const char*)argv[i], "--shell" ) )
{
ctx.getShell= true;
}
else if ( !strcmp( (const char*)argv[i], "--display") )
{
if ( i+1 < argc )
{
++i;
display_name= argv[i];
}
}
else if (!strcmp( (const char*)argv[i], "--noframe" ) )
{
paceRendering= false;
}
else if (!strcmp( (const char*)argv[i], "--log" ) )
{
g_log= true;
}
else if ( !strcmp( (const char*)argv[i], "-?" ) )
{
showUsage();
goto exit;
}
}
ctx.startTime= currentTimeMillis();
if ( display_name )
{
printf("calling wl_display_connect for display name %s\n", display_name);
}
else
{
printf("calling wl_display_connect for default display\n");
}
display= wl_display_connect(display_name);
printf("wl_display_connect: display=%p\n", display);
if ( !display )
{
printf("error: unable to connect to primary display\n");
nRC= -1;
goto exit;
}
printf("calling wl_display_get_registry\n");
registry= wl_display_get_registry(display);
printf("wl_display_get_registry: registry=%p\n", registry);
if ( !registry )
{
printf("error: unable to get display registry\n");
nRC= -2;
goto exit;
}
ctx.display= display;
ctx.registry= registry;
ctx.planeX= 0;
ctx.planeY= 0;
ctx.planeWidth= 1280;
ctx.planeHeight= 720;
wl_registry_add_listener(registry, ®istryListener, &ctx);
wl_display_roundtrip(ctx.display);
setupEGL(&ctx);
ctx.surfaceWidth= 640;
ctx.surfaceHeight= 360;
ctx.surfaceX= 0;
ctx.surfaceY= 0;
createSurface(&ctx);
setupGL(&ctx);
if ( paceRendering )
{
drawFrame(&ctx);
}
sigint.sa_handler = signalHandler;
sigemptyset(&sigint.sa_mask);
sigint.sa_flags = SA_RESETHAND;
sigaction(SIGINT, &sigint, NULL);
setBlockingMode(NON_BLOCKING_ENABLED);
ctx.inputState= InputState_main;
ctx.attribute= Attribute_position;
g_running= 1;
while( g_running )
{
if ( wl_display_dispatch( ctx.display ) == -1 )
{
break;
}
if ( delay > 0 )
{
usleep(delay);
}
if ( !paceRendering )
{
renderGL(&ctx);
eglSwapBuffers(ctx.eglDisplay, ctx.eglSurfaceWindow);
}
if ( ctx.getShell )
{
if ( kbhit() )
{
int c= fgetc(stdin);
processInput(&ctx, c);
// Prevent keys from building up while held down
tcflush(STDIN_FILENO,TCIFLUSH);
}
else
{
if ( ctx.surfaceDX || ctx.surfaceDY || ctx.surfaceDWidth || ctx.surfaceDHeight )
{
// Key has been released - reset deltas
ctx.surfaceDX= ctx.surfaceDY= ctx.surfaceDWidth= ctx.surfaceDHeight= 0;
}
}
}
}
exit:
printf("westeros_test: exiting...\n");
setBlockingMode(NON_BLOCKING_DISABLED);
if ( ctx.compositor )
{
wl_compositor_destroy( ctx.compositor );
ctx.compositor= 0;
}
if ( ctx.shell )
{
wl_simple_shell_destroy( ctx.shell );
ctx.shell= 0;
}
termEGL(&ctx);
if ( registry )
{
wl_registry_destroy(registry);
registry= 0;
}
if ( display )
{
wl_display_disconnect(display);
display= 0;
}
printf("westeros_test: exit\n");
return nRC;
}
#define RED_SIZE (8)
#define GREEN_SIZE (8)
#define BLUE_SIZE (8)
#define ALPHA_SIZE (8)
#define DEPTH_SIZE (0)
static bool setupEGL( AppCtx *ctx )
{
bool result= false;
EGLint major, minor;
EGLBoolean b;
EGLint configCount;
EGLConfig *eglConfigs= 0;
EGLint attr[32];
EGLint redSize, greenSize, blueSize, alphaSize, depthSize;
EGLint ctxAttrib[3];
int i;
/*
* Get default EGL display
*/
ctx->eglDisplay = eglGetDisplay((NativeDisplayType)ctx->display);
printf("eglDisplay=%p\n", ctx->eglDisplay );
if ( ctx->eglDisplay == EGL_NO_DISPLAY )
{
printf("error: EGL not available\n" );
goto exit;
}
/*
* Initialize display
*/
b= eglInitialize( ctx->eglDisplay, &major, &minor );
if ( !b )
{
printf("error: unable to initialize EGL display\n" );
goto exit;
}
printf("eglInitiialize: major: %d minor: %d\n", major, minor );
/*
* Get number of available configurations
*/
b= eglGetConfigs( ctx->eglDisplay, NULL, 0, &configCount );
if ( !b )
{
printf("error: unable to get count of EGL configurations: %X\n", eglGetError() );
goto exit;
}
printf("Number of EGL configurations: %d\n", configCount );
eglConfigs= (EGLConfig*)malloc( configCount*sizeof(EGLConfig) );
if ( !eglConfigs )
{
printf("error: unable to alloc memory for EGL configurations\n");
goto exit;
}
i= 0;
attr[i++]= EGL_RED_SIZE;
attr[i++]= RED_SIZE;
attr[i++]= EGL_GREEN_SIZE;
attr[i++]= GREEN_SIZE;
attr[i++]= EGL_BLUE_SIZE;
attr[i++]= BLUE_SIZE;
attr[i++]= EGL_DEPTH_SIZE;
attr[i++]= DEPTH_SIZE;
attr[i++]= EGL_STENCIL_SIZE;
attr[i++]= 0;
attr[i++]= EGL_SURFACE_TYPE;
attr[i++]= EGL_WINDOW_BIT;
attr[i++]= EGL_RENDERABLE_TYPE;
attr[i++]= EGL_OPENGL_ES2_BIT;
attr[i++]= EGL_NONE;
/*
* Get a list of configurations that meet or exceed our requirements
*/
b= eglChooseConfig( ctx->eglDisplay, attr, eglConfigs, configCount, &configCount );
if ( !b )
{
printf("error: eglChooseConfig failed: %X\n", eglGetError() );
goto exit;
}
printf("eglChooseConfig: matching configurations: %d\n", configCount );
/*
* Choose a suitable configuration
*/
for( i= 0; i < configCount; ++i )
{
eglGetConfigAttrib( ctx->eglDisplay, eglConfigs[i], EGL_RED_SIZE, &redSize );
eglGetConfigAttrib( ctx->eglDisplay, eglConfigs[i], EGL_GREEN_SIZE, &greenSize );
eglGetConfigAttrib( ctx->eglDisplay, eglConfigs[i], EGL_BLUE_SIZE, &blueSize );
eglGetConfigAttrib( ctx->eglDisplay, eglConfigs[i], EGL_ALPHA_SIZE, &alphaSize );
eglGetConfigAttrib( ctx->eglDisplay, eglConfigs[i], EGL_DEPTH_SIZE, &depthSize );
printf("config %d: red: %d green: %d blue: %d alpha: %d depth: %d\n",
i, redSize, greenSize, blueSize, alphaSize, depthSize );
if ( (redSize == RED_SIZE) &&
(greenSize == GREEN_SIZE) &&
(blueSize == BLUE_SIZE) &&
(alphaSize == ALPHA_SIZE) &&
(depthSize == DEPTH_SIZE) )
{
printf( "choosing config %d\n", i);
break;
}
}
if ( i == configCount )
{
printf("error: no suitable configuration available\n");
goto exit;
}
ctx->eglConfig= eglConfigs[i];
ctxAttrib[0]= EGL_CONTEXT_CLIENT_VERSION;
ctxAttrib[1]= 2; // ES2
ctxAttrib[2]= EGL_NONE;
/*
* Create an EGL context
*/
ctx->eglContext= eglCreateContext( ctx->eglDisplay, ctx->eglConfig, EGL_NO_CONTEXT, ctxAttrib );
if ( ctx->eglContext == EGL_NO_CONTEXT )
{
printf( "eglCreateContext failed: %X\n", eglGetError() );
goto exit;
}
printf("eglCreateContext: eglContext %p\n", ctx->eglContext );
result= true;
exit:
if ( eglConfigs )
{
free( eglConfigs );
eglConfigs= 0;
}
return result;
}
static void termEGL( AppCtx *ctx )
{
if ( ctx->display )
{
eglMakeCurrent( ctx->eglDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT );
destroySurface( ctx );
eglTerminate( ctx->eglDisplay );
eglReleaseThread();
}
}