linetex.cpp revision 4e036287fd64d936478f7168454ed5b8816e157f 
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#define LOG_TAG "fillrate"
19
20#include <unistd.h>
21#include <stdlib.h>
22#include <stdio.h>
23
24#include <EGL/egl.h>
25#include <GLES/gl.h>
26#include <GLES/glext.h>
27
28#include <utils/StopWatch.h>
29#include <ui/FramebufferNativeWindow.h>
30#include <ui/EGLUtils.h>
31
32using namespace android;
33
34int main(int argc, char** argv)
35{
36    EGLint configAttribs[] = {
37         EGL_DEPTH_SIZE, 0,
38         EGL_NONE
39     };
40
41     EGLint majorVersion;
42     EGLint minorVersion;
43     EGLContext context;
44     EGLConfig config;
45     EGLSurface surface;
46     EGLint w, h;
47     EGLDisplay dpy;
48
49     EGLNativeWindowType window = android_createDisplaySurface();
50
51     dpy = eglGetDisplay(EGL_DEFAULT_DISPLAY);
52     eglInitialize(dpy, &majorVersion, &minorVersion);
53
54     status_t err = EGLUtils::selectConfigForNativeWindow(
55             dpy, configAttribs, window, &config);
56     if (err) {
57         fprintf(stderr, "couldn't find an EGLConfig matching the screen format\n");
58         return 0;
59     }
60
61     surface = eglCreateWindowSurface(dpy, config, window, NULL);
62     context = eglCreateContext(dpy, config, NULL, NULL);
63     eglMakeCurrent(dpy, surface, surface, context);
64     eglQuerySurface(dpy, surface, EGL_WIDTH, &w);
65     eglQuerySurface(dpy, surface, EGL_HEIGHT, &h);
66
67     printf("w=%d, h=%d\n", w, h);
68
69     glBindTexture(GL_TEXTURE_2D, 0);
70     glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
71     glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
72     glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
73     glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
74     glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
75     glDisable(GL_DITHER);
76     glDisable(GL_BLEND);
77     glEnable(GL_TEXTURE_2D);
78     glColor4f(1,1,1,1);
79
80     const uint16_t t16[64] = { 0xFFFF, 0xF800, 0x07E0, 0x001F };
81
82     const GLfloat vertices[4][2] = {
83             { w/2,  0 },
84             { w/2,  h }
85     };
86
87     const GLfloat texCoords[4][2] = {
88             { 0,  0 },
89             { 1,  1 }
90     };
91
92     glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 1, 4, 0, GL_RGB, GL_UNSIGNED_SHORT_5_6_5, t16);
93
94     glViewport(0, 0, w, h);
95     glMatrixMode(GL_PROJECTION);
96     glLoadIdentity();
97     glOrthof(0, w, 0, h, 0, 1);
98
99     glEnableClientState(GL_VERTEX_ARRAY);
100     glEnableClientState(GL_TEXTURE_COORD_ARRAY);
101     glVertexPointer(2, GL_FLOAT, 0, vertices);
102     glTexCoordPointer(2, GL_FLOAT, 0, texCoords);
103
104     glClearColor(0,0,0,0);
105     glClear(GL_COLOR_BUFFER_BIT);
106     glDrawArrays(GL_LINES, 0, 2);
107     eglSwapBuffers(dpy, surface);
108
109     usleep(5*1000000);
110
111     eglTerminate(dpy);
112
113     return 0;
114}
115