108 lines
3.6 KiB
C
108 lines
3.6 KiB
C
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/*
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**
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** Copyright 2006, The Android Open Source Project
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**
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** Licensed under the Apache License, Version 2.0 (the "License");
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** you may not use this file except in compliance with the License.
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** You may obtain a copy of the License at
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**
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** http://www.apache.org/licenses/LICENSE-2.0
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**
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** Unless required by applicable law or agreed to in writing, software
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** distributed under the License is distributed on an "AS IS" BASIS,
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** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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** See the License for the specific language governing permissions and
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** limitations under the License.
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <GLES/egl.h>
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int main(int argc, char** argv)
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{
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EGLint s_configAttribs[] = {
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EGL_RED_SIZE, 5,
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EGL_GREEN_SIZE, 6,
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EGL_BLUE_SIZE, 5,
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EGL_NONE
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};
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EGLint numConfigs = -1;
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EGLint majorVersion;
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EGLint minorVersion;
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EGLConfig config;
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EGLContext context;
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EGLSurface surface;
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EGLint w, h;
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EGLDisplay dpy;
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dpy = eglGetDisplay(EGL_DEFAULT_DISPLAY);
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eglInitialize(dpy, &majorVersion, &minorVersion);
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eglChooseConfig(dpy, s_configAttribs, &config, 1, &numConfigs);
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surface = eglCreateWindowSurface(dpy, config,
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android_createDisplaySurface(), NULL);
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context = eglCreateContext(dpy, config, NULL, NULL);
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eglMakeCurrent(dpy, surface, surface, context);
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eglQuerySurface(dpy, surface, EGL_WIDTH, &w);
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eglQuerySurface(dpy, surface, EGL_HEIGHT, &h);
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GLint dim = w<h ? w : h;
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GLint crop[4] = { 0, 4, 4, -4 };
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glBindTexture(GL_TEXTURE_2D, 0);
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glTexParameteriv(GL_TEXTURE_2D, GL_TEXTURE_CROP_RECT_OES, crop);
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glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
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glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
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glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
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glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
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glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
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glEnable(GL_TEXTURE_2D);
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glColor4f(1,1,1,1);
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// packing is always 4
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uint8_t t8[] = {
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0x00, 0x55, 0x00, 0x55,
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0xAA, 0xFF, 0xAA, 0xFF,
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0x00, 0x55, 0x00, 0x55,
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0xAA, 0xFF, 0xAA, 0xFF };
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uint16_t t16[] = {
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0x0000, 0x5555, 0x0000, 0x5555,
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0xAAAA, 0xFFFF, 0xAAAA, 0xFFFF,
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0x0000, 0x5555, 0x0000, 0x5555,
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0xAAAA, 0xFFFF, 0xAAAA, 0xFFFF };
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uint16_t t5551[] = {
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0x0000, 0xFFFF, 0x0000, 0xFFFF,
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0xFFFF, 0x0000, 0xFFFF, 0x0000,
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0x0000, 0xFFFF, 0x0000, 0xFFFF,
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0xFFFF, 0x0000, 0xFFFF, 0x0000 };
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uint32_t t32[] = {
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0xFF000000, 0xFF0000FF, 0xFF00FF00, 0xFFFF0000,
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0xFF00FF00, 0xFFFF0000, 0xFF000000, 0xFF0000FF,
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0xFF00FFFF, 0xFF00FF00, 0x00FF00FF, 0xFFFFFF00,
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0xFF000000, 0xFFFF00FF, 0xFF00FFFF, 0xFFFFFFFF
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};
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glClear(GL_COLOR_BUFFER_BIT);
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glTexImage2D(GL_TEXTURE_2D, 0, GL_LUMINANCE, 4, 4, 0, GL_LUMINANCE, GL_UNSIGNED_BYTE, t8);
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glDrawTexiOES(0, 0, 0, dim/2, dim/2);
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glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 4, 4, 0, GL_RGB, GL_UNSIGNED_SHORT_5_6_5, t16);
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glDrawTexiOES(dim/2, 0, 0, dim/2, dim/2);
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glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 4, 4, 0, GL_RGBA, GL_UNSIGNED_SHORT_4_4_4_4, t16);
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glDrawTexiOES(0, dim/2, 0, dim/2, dim/2);
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glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 4, 4, 0, GL_RGBA, GL_UNSIGNED_BYTE, t32);
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glDrawTexiOES(dim/2, dim/2, 0, dim/2, dim/2);
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eglSwapBuffers(dpy, surface);
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return 0;
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}
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