1/*
2** Copyright 2010, The Android Open Source Project
3**
4** Licensed under the Apache License, Version 2.0 (the "License");
5** you may not use this file except in compliance with the License.
6** You may obtain a copy of the License at
7**
8**     http://www.apache.org/licenses/LICENSE-2.0
9**
10** Unless required by applicable law or agreed to in writing, software
11** distributed under the License is distributed on an "AS IS" BASIS,
12** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13** See the License for the specific language governing permissions and
14** limitations under the License.
15*/
16
17#include <stdlib.h>
18#include <stdio.h>
19
20#include <EGL/egl.h>
21#include <EGL/eglext.h>
22
23#define ATTRIBUTE(_attr) { _attr, #_attr }
24
25struct Attribute {
26    EGLint attribute;
27    char const* name;
28};
29
30// clang-format off
31Attribute attributes[] = {
32        ATTRIBUTE( EGL_BUFFER_SIZE ),
33        ATTRIBUTE( EGL_ALPHA_SIZE ),
34        ATTRIBUTE( EGL_BLUE_SIZE ),
35        ATTRIBUTE( EGL_GREEN_SIZE ),
36        ATTRIBUTE( EGL_RED_SIZE ),
37        ATTRIBUTE( EGL_DEPTH_SIZE ),
38        ATTRIBUTE( EGL_STENCIL_SIZE ),
39        ATTRIBUTE( EGL_CONFIG_CAVEAT ),
40        ATTRIBUTE( EGL_CONFIG_ID ),
41        ATTRIBUTE( EGL_LEVEL ),
42        ATTRIBUTE( EGL_MAX_PBUFFER_HEIGHT ),
43        ATTRIBUTE( EGL_MAX_PBUFFER_WIDTH ),
44        ATTRIBUTE( EGL_MAX_PBUFFER_PIXELS ),
45        ATTRIBUTE( EGL_NATIVE_RENDERABLE ),
46        ATTRIBUTE( EGL_NATIVE_VISUAL_ID ),
47        ATTRIBUTE( EGL_NATIVE_VISUAL_TYPE ),
48        ATTRIBUTE( EGL_SAMPLES ),
49        ATTRIBUTE( EGL_SAMPLE_BUFFERS ),
50        ATTRIBUTE( EGL_SURFACE_TYPE ),
51        ATTRIBUTE( EGL_TRANSPARENT_TYPE ),
52        ATTRIBUTE( EGL_TRANSPARENT_BLUE_VALUE ),
53        ATTRIBUTE( EGL_TRANSPARENT_GREEN_VALUE ),
54        ATTRIBUTE( EGL_TRANSPARENT_RED_VALUE ),
55        ATTRIBUTE( EGL_BIND_TO_TEXTURE_RGB ),
56        ATTRIBUTE( EGL_BIND_TO_TEXTURE_RGBA ),
57        ATTRIBUTE( EGL_MIN_SWAP_INTERVAL ),
58        ATTRIBUTE( EGL_MAX_SWAP_INTERVAL ),
59        ATTRIBUTE( EGL_LUMINANCE_SIZE ),
60        ATTRIBUTE( EGL_ALPHA_MASK_SIZE ),
61        ATTRIBUTE( EGL_COLOR_BUFFER_TYPE ),
62        ATTRIBUTE( EGL_RENDERABLE_TYPE ),
63        ATTRIBUTE( EGL_MATCH_NATIVE_PIXMAP ),
64        ATTRIBUTE( EGL_CONFORMANT ),
65        ATTRIBUTE( EGL_COLOR_COMPONENT_TYPE_EXT ),
66};
67// clang-format on
68
69int main(int argc, char** argv)
70{
71    EGLConfig* configs;
72    EGLint n;
73
74    EGLDisplay dpy = eglGetDisplay(EGL_DEFAULT_DISPLAY);
75    eglInitialize(dpy, 0, 0);
76    eglGetConfigs(dpy, NULL, 0, &n);
77    configs = new EGLConfig[n];
78    eglGetConfigs(dpy, configs, n, &n);
79
80    for (EGLint i=0 ; i<n ; i++) {
81        printf("EGLConfig[%d]\n", i);
82        for (int attr = 0 ; attr<sizeof(attributes)/sizeof(Attribute) ; attr++) {
83            EGLint value;
84            eglGetConfigAttrib(dpy, configs[i], attributes[attr].attribute, &value);
85            printf("\t%-32s: %10d (0x%08x)\n", attributes[attr].name, value, value);
86        }
87    }
88
89    delete [] configs;
90    eglTerminate(dpy);
91    return 0;
92}
93