1 /*
2 **
3 ** Copyright 2006, The Android Open Source Project
4 **
5 ** Licensed under the Apache License, Version 2.0 (the "License");
6 ** you may not use this file except in compliance with the License.
7 ** You may obtain a copy of the License at
8 **
9 ** http://www.apache.org/licenses/LICENSE-2.0
10 **
11 ** Unless required by applicable law or agreed to in writing, software
12 ** distributed under the License is distributed on an "AS IS" BASIS,
13 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 ** See the License for the specific language governing permissions and
15 ** limitations under the License.
16 */
17
18 #include <stdlib.h>
19 #include <stdio.h>
20
21 #include <EGL/egl.h>
22 #include <GLES/gl.h>
23 #include <GLES/glext.h>
24
25 #include <ui/FramebufferNativeWindow.h>
26 #include "EGLUtils.h"
27
28 using namespace android;
29
main(int argc,char ** argv)30 int main(int argc, char** argv)
31 {
32 EGLint configAttribs[] = {
33 EGL_DEPTH_SIZE, 0,
34 EGL_NONE
35 };
36
37 EGLint majorVersion;
38 EGLint minorVersion;
39 EGLContext context;
40 EGLConfig config;
41 EGLSurface surface;
42 EGLint w, h;
43 EGLDisplay dpy;
44
45 EGLNativeWindowType window = android_createDisplaySurface();
46
47 dpy = eglGetDisplay(EGL_DEFAULT_DISPLAY);
48 eglInitialize(dpy, &majorVersion, &minorVersion);
49
50 status_t err = EGLUtils::selectConfigForNativeWindow(
51 dpy, configAttribs, window, &config);
52 if (err) {
53 fprintf(stderr, "couldn't find an EGLConfig matching the screen format\n");
54 return 0;
55 }
56
57 surface = eglCreateWindowSurface(dpy, config, window, NULL);
58 context = eglCreateContext(dpy, config, NULL, NULL);
59 eglMakeCurrent(dpy, surface, surface, context);
60 eglQuerySurface(dpy, surface, EGL_WIDTH, &w);
61 eglQuerySurface(dpy, surface, EGL_HEIGHT, &h);
62 GLint dim = w<h ? w : h;
63
64
65 GLint crop[4] = { 0, 4, 4, -4 };
66 glBindTexture(GL_TEXTURE_2D, 0);
67 glTexParameteriv(GL_TEXTURE_2D, GL_TEXTURE_CROP_RECT_OES, crop);
68 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
69 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
70 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
71 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
72 glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
73 glEnable(GL_TEXTURE_2D);
74 glColor4f(1,1,1,1);
75
76 // packing is always 4
77 uint8_t t8[] = {
78 0x00, 0x55, 0x00, 0x55,
79 0xAA, 0xFF, 0xAA, 0xFF,
80 0x00, 0x55, 0x00, 0x55,
81 0xAA, 0xFF, 0xAA, 0xFF };
82
83 uint16_t t16[] = {
84 0x0000, 0x5555, 0x0000, 0x5555,
85 0xAAAA, 0xFFFF, 0xAAAA, 0xFFFF,
86 0x0000, 0x5555, 0x0000, 0x5555,
87 0xAAAA, 0xFFFF, 0xAAAA, 0xFFFF };
88
89 uint16_t t5551[] = {
90 0x0000, 0xFFFF, 0x0000, 0xFFFF,
91 0xFFFF, 0x0000, 0xFFFF, 0x0000,
92 0x0000, 0xFFFF, 0x0000, 0xFFFF,
93 0xFFFF, 0x0000, 0xFFFF, 0x0000 };
94
95 uint32_t t32[] = {
96 0xFF000000, 0xFF0000FF, 0xFF00FF00, 0xFFFF0000,
97 0xFF00FF00, 0xFFFF0000, 0xFF000000, 0xFF0000FF,
98 0xFF00FFFF, 0xFF00FF00, 0x00FF00FF, 0xFFFFFF00,
99 0xFF000000, 0xFFFF00FF, 0xFF00FFFF, 0xFFFFFFFF
100 };
101
102
103 glClear(GL_COLOR_BUFFER_BIT);
104 glTexImage2D(GL_TEXTURE_2D, 0, GL_LUMINANCE, 4, 4, 0, GL_LUMINANCE, GL_UNSIGNED_BYTE, t8);
105 glDrawTexiOES(0, 0, 0, dim/2, dim/2);
106
107 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 4, 4, 0, GL_RGB, GL_UNSIGNED_SHORT_5_6_5, t16);
108 glDrawTexiOES(dim/2, 0, 0, dim/2, dim/2);
109
110 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 4, 4, 0, GL_RGBA, GL_UNSIGNED_SHORT_4_4_4_4, t16);
111 glDrawTexiOES(0, dim/2, 0, dim/2, dim/2);
112
113 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 4, 4, 0, GL_RGBA, GL_UNSIGNED_BYTE, t32);
114 glDrawTexiOES(dim/2, dim/2, 0, dim/2, dim/2);
115
116 eglSwapBuffers(dpy, surface);
117 return 0;
118 }
119