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 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
