/* ** ** 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 <ui/FramebufferNativeWindow.h> #include <ui/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; EGLNativeWindowType window = android_createDisplaySurface(); 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); return 0; }