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/*
**
** Copyright 2006, The Android Open Source Project
**
** 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 <EGL/egl.h>
#include <GLES/gl.h>
#include <GLES/glext.h>
#include <WindowSurface.h>
#include <EGLUtils.h>
using namespace android;
int main(int argc, char** argv)
{
EGLint configAttribs[] = {
EGL_DEPTH_SIZE, 0,
EGL_NONE
};
EGLint majorVersion;
EGLint minorVersion;
EGLContext context;
EGLConfig config;
EGLSurface surface;
EGLint w, h;
EGLDisplay dpy;
WindowSurface windowSurface;
EGLNativeWindowType window = windowSurface.getSurface();
dpy = eglGetDisplay(EGL_DEFAULT_DISPLAY);
eglInitialize(dpy, &majorVersion, &minorVersion);
status_t err = EGLUtils::selectConfigForNativeWindow(
dpy, configAttribs, window, &config);
if (err) {
fprintf(stderr, "couldn't find an EGLConfig matching the screen format\n");
return 0;
}
surface = eglCreateWindowSurface(dpy, config, window, NULL);
context = eglCreateContext(dpy, config, NULL, NULL);
eglMakeCurrent(dpy, surface, surface, context);
eglQuerySurface(dpy, surface, EGL_WIDTH, &w);
eglQuerySurface(dpy, surface, EGL_HEIGHT, &h);
GLint dim = w<h ? w : h;
GLint crop[4] = { 0, 4, 4, -4 };
glBindTexture(GL_TEXTURE_2D, 0);
glTexParameteriv(GL_TEXTURE_2D, GL_TEXTURE_CROP_RECT_OES, crop);
glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
glEnable(GL_TEXTURE_2D);
glColor4f(1,1,1,1);
// packing is always 4
uint8_t t8[] = {
0x00, 0x55, 0x00, 0x55,
0xAA, 0xFF, 0xAA, 0xFF,
0x00, 0x55, 0x00, 0x55,
0xAA, 0xFF, 0xAA, 0xFF };
uint16_t t16[] = {
0x0000, 0x5555, 0x0000, 0x5555,
0xAAAA, 0xFFFF, 0xAAAA, 0xFFFF,
0x0000, 0x5555, 0x0000, 0x5555,
0xAAAA, 0xFFFF, 0xAAAA, 0xFFFF };
uint16_t t5551[] = {
0x0000, 0xFFFF, 0x0000, 0xFFFF,
0xFFFF, 0x0000, 0xFFFF, 0x0000,
0x0000, 0xFFFF, 0x0000, 0xFFFF,
0xFFFF, 0x0000, 0xFFFF, 0x0000 };
uint32_t t32[] = {
0xFF000000, 0xFF0000FF, 0xFF00FF00, 0xFFFF0000,
0xFF00FF00, 0xFFFF0000, 0xFF000000, 0xFF0000FF,
0xFF00FFFF, 0xFF00FF00, 0x00FF00FF, 0xFFFFFF00,
0xFF000000, 0xFFFF00FF, 0xFF00FFFF, 0xFFFFFFFF
};
glClear(GL_COLOR_BUFFER_BIT);
glTexImage2D(GL_TEXTURE_2D, 0, GL_LUMINANCE, 4, 4, 0, GL_LUMINANCE, GL_UNSIGNED_BYTE, t8);
glDrawTexiOES(0, 0, 0, dim/2, dim/2);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 4, 4, 0, GL_RGB, GL_UNSIGNED_SHORT_5_6_5, t16);
glDrawTexiOES(dim/2, 0, 0, dim/2, dim/2);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 4, 4, 0, GL_RGBA, GL_UNSIGNED_SHORT_4_4_4_4, t16);
glDrawTexiOES(0, dim/2, 0, dim/2, dim/2);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 4, 4, 0, GL_RGBA, GL_UNSIGNED_BYTE, t32);
glDrawTexiOES(dim/2, dim/2, 0, dim/2, dim/2);
eglSwapBuffers(dpy, surface);
sleep(2); // so you have a chance to admire it
return 0;
}
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