139 lines
4.8 KiB
C
139 lines
4.8 KiB
C
/*
|
|
**
|
|
** 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>
|
|
|
|
int main(int argc, char** argv)
|
|
{
|
|
EGLint s_configAttribs[] = {
|
|
EGL_RED_SIZE, 5,
|
|
EGL_GREEN_SIZE, 6,
|
|
EGL_BLUE_SIZE, 5,
|
|
EGL_NONE
|
|
};
|
|
|
|
EGLint numConfigs = -1, n=0;
|
|
EGLint majorVersion;
|
|
EGLint minorVersion;
|
|
EGLConfig config;
|
|
EGLContext context;
|
|
EGLSurface surface;
|
|
EGLint w, h;
|
|
|
|
EGLDisplay dpy;
|
|
|
|
dpy = eglGetDisplay(EGL_DEFAULT_DISPLAY);
|
|
eglInitialize(dpy, &majorVersion, &minorVersion);
|
|
|
|
// Get all the "potential match" configs...
|
|
eglGetConfigs(dpy, NULL, 0, &numConfigs);
|
|
EGLConfig* const configs = malloc(sizeof(EGLConfig)*numConfigs);
|
|
eglChooseConfig(dpy, s_configAttribs, configs, numConfigs, &n);
|
|
config = configs[0];
|
|
if (n > 1) {
|
|
// if there is more than one candidate, go through the list
|
|
// and pick one that matches our framebuffer format
|
|
int fbSzA = 0; // should not hardcode
|
|
int fbSzR = 5; // should not hardcode
|
|
int fbSzG = 6; // should not hardcode
|
|
int fbSzB = 5; // should not hardcode
|
|
int i;
|
|
for (i=0 ; i<n ; i++) {
|
|
EGLint r,g,b,a;
|
|
eglGetConfigAttrib(dpy, configs[i], EGL_RED_SIZE, &r);
|
|
eglGetConfigAttrib(dpy, configs[i], EGL_GREEN_SIZE, &g);
|
|
eglGetConfigAttrib(dpy, configs[i], EGL_BLUE_SIZE, &b);
|
|
eglGetConfigAttrib(dpy, configs[i], EGL_ALPHA_SIZE, &a);
|
|
if (fbSzA == a && fbSzR == r && fbSzG == g && fbSzB == b) {
|
|
config = configs[i];
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
free(configs);
|
|
|
|
|
|
|
|
surface = eglCreateWindowSurface(dpy, config,
|
|
android_createDisplaySurface(), 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);
|
|
return 0;
|
|
}
|