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/*
* Exercise EGL API functions
*/
#define EGL_EGLEXT_PROTOTYPES
#include <EGL/egl.h>
#include <EGL/eglext.h>
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <wayland-client.h>
/**
* Test EGL_MESA_screen_surface functions
*/
static void
TestScreens(EGLDisplay dpy)
{
#ifdef EGL_MESA_screen_surface
#define MAX 8
EGLScreenMESA screens[MAX];
EGLint numScreens;
EGLint i;
eglGetScreensMESA(dpy, screens, MAX, &numScreens);
printf("Found %d screens\n", numScreens);
for (i = 0; i < numScreens; i++) {
printf(" Screen %d handle: %d\n", i, (int) screens[i]);
}
#endif
}
/**
* Print table of all available configurations.
*/
static void
PrintConfigs(EGLDisplay d, EGLConfig *configs, EGLint numConfigs)
{
EGLint i;
printf("Configurations:\n");
printf(" bf lv d st colorbuffer dp st tr supported \n");
printf(" id sz l b ro r g b a th cl an surfaces \n");
printf("----------------------------------------------\n");
for (i = 0; i < numConfigs; i++) {
EGLint id, size, level;
EGLint red, green, blue, alpha;
EGLint depth, stencil;
EGLint surfaces;
EGLint doubleBuf = 1, stereo = 0;
EGLint trans;
char surfString[100] = "";
char *transString = "( - )";
eglGetConfigAttrib(d, configs[i], EGL_CONFIG_ID, &id);
eglGetConfigAttrib(d, configs[i], EGL_BUFFER_SIZE, &size);
eglGetConfigAttrib(d, configs[i], EGL_LEVEL, &level);
eglGetConfigAttrib(d, configs[i], EGL_RED_SIZE, &red);
eglGetConfigAttrib(d, configs[i], EGL_GREEN_SIZE, &green);
eglGetConfigAttrib(d, configs[i], EGL_BLUE_SIZE, &blue);
eglGetConfigAttrib(d, configs[i], EGL_ALPHA_SIZE, &alpha);
eglGetConfigAttrib(d, configs[i], EGL_DEPTH_SIZE, &depth);
eglGetConfigAttrib(d, configs[i], EGL_STENCIL_SIZE, &stencil);
eglGetConfigAttrib(d, configs[i], EGL_SURFACE_TYPE, &surfaces);
eglGetConfigAttrib(d, configs[i], EGL_TRANSPARENT_TYPE, &trans);
if (surfaces & EGL_WINDOW_BIT)
strcat(surfString, "win,");
if (surfaces & EGL_PBUFFER_BIT)
strcat(surfString, "pb,");
if (surfaces & EGL_PIXMAP_BIT)
strcat(surfString, "pix,");
if (strlen(surfString) > 0)
surfString[strlen(surfString) - 1] = 0;
if (trans == EGL_NONE)
transString = "none ";
else if (trans == EGL_TRANSPARENT_RGB)
transString = "rgb ";
else if (trans == EGL_TRANSPARENT_ALPHA_MESA)
transString = "alpha";
printf("0x%02x %2d %2d %c %c %2d %2d %2d %2d %2d %2d %s %-12s\n",
id, size, level,
doubleBuf ? 'y' : '.',
stereo ? 'y' : '.',
red, green, blue, alpha,
depth, stencil, transString, surfString);
}
}
int
main(int argc, char *argv[])
{
int maj, min;
EGLContext ctx;
EGLSurface pbuffer;
EGLConfig *configs;
EGLint numConfigs;
EGLBoolean b;
const EGLint pbufAttribs[] = {
EGL_WIDTH, 500,
EGL_HEIGHT, 500,
EGL_NONE
};
struct wl_display *display = wl_display_connect(NULL);
EGLDisplay d = eglGetPlatformDisplayEXT(EGL_PLATFORM_WAYLAND_EXT,
display, NULL);
assert(d);
if (!eglInitialize(d, &maj, &min)) {
printf("demo: eglInitialize failed\n");
exit(1);
}
printf("EGL version = %d.%d\n", maj, min);
printf("EGL_VENDOR = %s\n", eglQueryString(d, EGL_VENDOR));
eglGetConfigs(d, NULL, 0, &numConfigs);
configs = malloc(sizeof(*configs) *numConfigs);
eglGetConfigs(d, configs, numConfigs, &numConfigs);
PrintConfigs(d, configs, numConfigs);
eglBindAPI(EGL_OPENGL_API);
ctx = eglCreateContext(d, configs[0], EGL_NO_CONTEXT, NULL);
if (ctx == EGL_NO_CONTEXT) {
printf("failed to create context\n");
return 0;
}
pbuffer = eglCreatePbufferSurface(d, configs[0], pbufAttribs);
if (pbuffer == EGL_NO_SURFACE) {
printf("failed to create pbuffer\n");
return 0;
}
free(configs);
b = eglMakeCurrent(d, pbuffer, pbuffer, ctx);
if (!b) {
printf("make current failed\n");
return 0;
}
b = eglMakeCurrent(d, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
TestScreens(d);
eglDestroySurface(d, pbuffer);
eglDestroyContext(d, ctx);
eglTerminate(d);
return 0;
}
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