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      1 /*
      2  * Copyright (C) 2007 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #include <stdlib.h>
     18 #include <stdio.h>
     19 #include <time.h>
     20 #include <sched.h>
     21 #include <sys/resource.h>
     22 
     23 #include <EGL/egl.h>
     24 #include <GLES2/gl2.h>
     25 #include <GLES2/gl2ext.h>
     26 
     27 #include <utils/Timers.h>
     28 
     29 #include <WindowSurface.h>
     30 #include <EGLUtils.h>
     31 
     32 using namespace android;
     33 extern "C" EGLAPI const char* eglQueryStringImplementationANDROID(EGLDisplay dpy, EGLint name);
     34 
     35 #define METADATA_SCALE(x) (static_cast<EGLint>(x * EGL_METADATA_SCALING_EXT))
     36 
     37 static void printGLString(const char *name, GLenum s) {
     38     // fprintf(stderr, "printGLString %s, %d\n", name, s);
     39     const char *v = (const char *) glGetString(s);
     40     // int error = glGetError();
     41     // fprintf(stderr, "glGetError() = %d, result of glGetString = %x\n", error,
     42     //        (unsigned int) v);
     43     // if ((v < (const char*) 0) || (v > (const char*) 0x10000))
     44     //    fprintf(stderr, "GL %s = %s\n", name, v);
     45     // else
     46     //    fprintf(stderr, "GL %s = (null) 0x%08x\n", name, (unsigned int) v);
     47     fprintf(stderr, "GL %s = %s\n", name, v);
     48 }
     49 
     50 static void printEGLString(EGLDisplay dpy, const char *name, GLenum s) {
     51     const char *v = (const char *) eglQueryString(dpy, s);
     52     const char* va = (const char*)eglQueryStringImplementationANDROID(dpy, s);
     53     fprintf(stderr, "GL %s = %s\nImplementationANDROID: %s\n", name, v, va);
     54 }
     55 
     56 static void checkEglError(const char* op, EGLBoolean returnVal = EGL_TRUE) {
     57     if (returnVal != EGL_TRUE) {
     58         fprintf(stderr, "%s() returned %d\n", op, returnVal);
     59     }
     60 
     61     for (EGLint error = eglGetError(); error != EGL_SUCCESS; error
     62             = eglGetError()) {
     63         fprintf(stderr, "after %s() eglError %s (0x%x)\n", op, EGLUtils::strerror(error),
     64                 error);
     65     }
     66 }
     67 
     68 static void checkGlError(const char* op) {
     69     for (GLint error = glGetError(); error; error
     70             = glGetError()) {
     71         fprintf(stderr, "after %s() glError (0x%x)\n", op, error);
     72     }
     73 }
     74 
     75 static const char gVertexShader[] = "attribute vec4 vPosition;\n"
     76     "void main() {\n"
     77     "  gl_Position = vPosition;\n"
     78     "}\n";
     79 
     80 static const char gFragmentShader[] = "precision mediump float;\n"
     81     "void main() {\n"
     82     "  gl_FragColor = vec4(0.0, 1.0, 0.0, 1.0);\n"
     83     "}\n";
     84 
     85 GLuint loadShader(GLenum shaderType, const char* pSource) {
     86     GLuint shader = glCreateShader(shaderType);
     87     if (shader) {
     88         glShaderSource(shader, 1, &pSource, NULL);
     89         glCompileShader(shader);
     90         GLint compiled = 0;
     91         glGetShaderiv(shader, GL_COMPILE_STATUS, &compiled);
     92         if (!compiled) {
     93             GLint infoLen = 0;
     94             glGetShaderiv(shader, GL_INFO_LOG_LENGTH, &infoLen);
     95             if (infoLen) {
     96                 char* buf = (char*) malloc(infoLen);
     97                 if (buf) {
     98                     glGetShaderInfoLog(shader, infoLen, NULL, buf);
     99                     fprintf(stderr, "Could not compile shader %d:\n%s\n",
    100                             shaderType, buf);
    101                     free(buf);
    102                 }
    103                 glDeleteShader(shader);
    104                 shader = 0;
    105             }
    106         }
    107     }
    108     return shader;
    109 }
    110 
    111 GLuint createProgram(const char* pVertexSource, const char* pFragmentSource) {
    112     GLuint vertexShader = loadShader(GL_VERTEX_SHADER, pVertexSource);
    113     if (!vertexShader) {
    114         return 0;
    115     }
    116 
    117     GLuint pixelShader = loadShader(GL_FRAGMENT_SHADER, pFragmentSource);
    118     if (!pixelShader) {
    119         return 0;
    120     }
    121 
    122     GLuint program = glCreateProgram();
    123     if (program) {
    124         glAttachShader(program, vertexShader);
    125         checkGlError("glAttachShader");
    126         glAttachShader(program, pixelShader);
    127         checkGlError("glAttachShader");
    128         glLinkProgram(program);
    129         GLint linkStatus = GL_FALSE;
    130         glGetProgramiv(program, GL_LINK_STATUS, &linkStatus);
    131         if (linkStatus != GL_TRUE) {
    132             GLint bufLength = 0;
    133             glGetProgramiv(program, GL_INFO_LOG_LENGTH, &bufLength);
    134             if (bufLength) {
    135                 char* buf = (char*) malloc(bufLength);
    136                 if (buf) {
    137                     glGetProgramInfoLog(program, bufLength, NULL, buf);
    138                     fprintf(stderr, "Could not link program:\n%s\n", buf);
    139                     free(buf);
    140                 }
    141             }
    142             glDeleteProgram(program);
    143             program = 0;
    144         }
    145     }
    146     return program;
    147 }
    148 
    149 GLuint gProgram;
    150 GLuint gvPositionHandle;
    151 
    152 bool setupGraphics(int w, int h) {
    153     gProgram = createProgram(gVertexShader, gFragmentShader);
    154     if (!gProgram) {
    155         return false;
    156     }
    157     gvPositionHandle = glGetAttribLocation(gProgram, "vPosition");
    158     checkGlError("glGetAttribLocation");
    159     fprintf(stderr, "glGetAttribLocation(\"vPosition\") = %d\n",
    160             gvPositionHandle);
    161 
    162     glViewport(0, 0, w, h);
    163     checkGlError("glViewport");
    164     return true;
    165 }
    166 
    167 const GLfloat gTriangleVertices[] = { 0.0f, 0.5f, -0.5f, -0.5f,
    168         0.5f, -0.5f };
    169 
    170 void renderFrame() {
    171     glClearColor(0.0f, 0.0f, 1.0f, 1.0f);
    172     checkGlError("glClearColor");
    173     glClear( GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT);
    174     checkGlError("glClear");
    175 
    176     glUseProgram(gProgram);
    177     checkGlError("glUseProgram");
    178 
    179     glVertexAttribPointer(gvPositionHandle, 2, GL_FLOAT, GL_FALSE, 0, gTriangleVertices);
    180     checkGlError("glVertexAttribPointer");
    181     glEnableVertexAttribArray(gvPositionHandle);
    182     checkGlError("glEnableVertexAttribArray");
    183     glDrawArrays(GL_TRIANGLES, 0, 3);
    184     checkGlError("glDrawArrays");
    185 }
    186 
    187 void printEGLConfiguration(EGLDisplay dpy, EGLConfig config) {
    188 
    189 #define X(VAL) {VAL, #VAL}
    190     struct {EGLint attribute; const char* name;} names[] = {
    191     X(EGL_BUFFER_SIZE),
    192     X(EGL_ALPHA_SIZE),
    193     X(EGL_BLUE_SIZE),
    194     X(EGL_GREEN_SIZE),
    195     X(EGL_RED_SIZE),
    196     X(EGL_DEPTH_SIZE),
    197     X(EGL_STENCIL_SIZE),
    198     X(EGL_CONFIG_CAVEAT),
    199     X(EGL_CONFIG_ID),
    200     X(EGL_LEVEL),
    201     X(EGL_MAX_PBUFFER_HEIGHT),
    202     X(EGL_MAX_PBUFFER_PIXELS),
    203     X(EGL_MAX_PBUFFER_WIDTH),
    204     X(EGL_NATIVE_RENDERABLE),
    205     X(EGL_NATIVE_VISUAL_ID),
    206     X(EGL_NATIVE_VISUAL_TYPE),
    207     X(EGL_SAMPLES),
    208     X(EGL_SAMPLE_BUFFERS),
    209     X(EGL_SURFACE_TYPE),
    210     X(EGL_TRANSPARENT_TYPE),
    211     X(EGL_TRANSPARENT_RED_VALUE),
    212     X(EGL_TRANSPARENT_GREEN_VALUE),
    213     X(EGL_TRANSPARENT_BLUE_VALUE),
    214     X(EGL_BIND_TO_TEXTURE_RGB),
    215     X(EGL_BIND_TO_TEXTURE_RGBA),
    216     X(EGL_MIN_SWAP_INTERVAL),
    217     X(EGL_MAX_SWAP_INTERVAL),
    218     X(EGL_LUMINANCE_SIZE),
    219     X(EGL_ALPHA_MASK_SIZE),
    220     X(EGL_COLOR_BUFFER_TYPE),
    221     X(EGL_RENDERABLE_TYPE),
    222     X(EGL_CONFORMANT),
    223    };
    224 #undef X
    225 
    226     for (size_t j = 0; j < sizeof(names) / sizeof(names[0]); j++) {
    227         EGLint value = -1;
    228         EGLint returnVal = eglGetConfigAttrib(dpy, config, names[j].attribute, &value);
    229         EGLint error = eglGetError();
    230         if (returnVal && error == EGL_SUCCESS) {
    231             printf(" %s: ", names[j].name);
    232             printf("%d (0x%x)", value, value);
    233         }
    234     }
    235     printf("\n");
    236 }
    237 
    238 int printEGLConfigurations(EGLDisplay dpy) {
    239     EGLint numConfig = 0;
    240     EGLint returnVal = eglGetConfigs(dpy, NULL, 0, &numConfig);
    241     checkEglError("eglGetConfigs", returnVal);
    242     if (!returnVal) {
    243         return false;
    244     }
    245 
    246     printf("Number of EGL configuration: %d\n", numConfig);
    247 
    248     EGLConfig* configs = (EGLConfig*) malloc(sizeof(EGLConfig) * numConfig);
    249     if (! configs) {
    250         printf("Could not allocate configs.\n");
    251         return false;
    252     }
    253 
    254     returnVal = eglGetConfigs(dpy, configs, numConfig, &numConfig);
    255     checkEglError("eglGetConfigs", returnVal);
    256     if (!returnVal) {
    257         free(configs);
    258         return false;
    259     }
    260 
    261     for(int i = 0; i < numConfig; i++) {
    262         printf("Configuration %d\n", i);
    263         printEGLConfiguration(dpy, configs[i]);
    264     }
    265 
    266     free(configs);
    267     return true;
    268 }
    269 
    270 void setSurfaceMetadata(EGLDisplay dpy, EGLSurface surface) {
    271     static EGLBoolean toggle = GL_FALSE;
    272     if (EGLUtils::hasEglExtension(dpy, "EGL_EXT_surface_SMPTE2086_metadata")) {
    273         eglSurfaceAttrib(dpy, surface, EGL_SMPTE2086_DISPLAY_PRIMARY_RX_EXT, METADATA_SCALE(0.640));
    274         eglSurfaceAttrib(dpy, surface, EGL_SMPTE2086_DISPLAY_PRIMARY_RY_EXT, METADATA_SCALE(0.330));
    275         eglSurfaceAttrib(dpy, surface, EGL_SMPTE2086_DISPLAY_PRIMARY_GX_EXT, METADATA_SCALE(0.290));
    276         eglSurfaceAttrib(dpy, surface, EGL_SMPTE2086_DISPLAY_PRIMARY_GY_EXT, METADATA_SCALE(0.600));
    277         eglSurfaceAttrib(dpy, surface, EGL_SMPTE2086_DISPLAY_PRIMARY_BX_EXT, METADATA_SCALE(0.150));
    278         eglSurfaceAttrib(dpy, surface, EGL_SMPTE2086_DISPLAY_PRIMARY_BY_EXT, METADATA_SCALE(0.060));
    279         eglSurfaceAttrib(dpy, surface, EGL_SMPTE2086_WHITE_POINT_X_EXT, METADATA_SCALE(0.3127));
    280         eglSurfaceAttrib(dpy, surface, EGL_SMPTE2086_WHITE_POINT_Y_EXT, METADATA_SCALE(0.3290));
    281         if (toggle) {
    282             eglSurfaceAttrib(dpy, surface, EGL_SMPTE2086_MAX_LUMINANCE_EXT, METADATA_SCALE(350));
    283         } else {
    284             eglSurfaceAttrib(dpy, surface, EGL_SMPTE2086_MAX_LUMINANCE_EXT, METADATA_SCALE(300));
    285         }
    286         eglSurfaceAttrib(dpy, surface, EGL_SMPTE2086_MIN_LUMINANCE_EXT, METADATA_SCALE(0.7));
    287     }
    288 
    289     if (EGLUtils::hasEglExtension(dpy, "EGL_EXT_surface_CTA861_3_metadata")) {
    290         if (toggle) {
    291             eglSurfaceAttrib(dpy, surface, EGL_CTA861_3_MAX_CONTENT_LIGHT_LEVEL_EXT,
    292                              METADATA_SCALE(300));
    293         } else {
    294             eglSurfaceAttrib(dpy, surface, EGL_CTA861_3_MAX_CONTENT_LIGHT_LEVEL_EXT,
    295                              METADATA_SCALE(325));
    296         }
    297         eglSurfaceAttrib(dpy, surface, EGL_CTA861_3_MAX_FRAME_AVERAGE_LEVEL_EXT,
    298                          METADATA_SCALE(75));
    299     }
    300     toggle = !toggle;
    301 }
    302 
    303 int main(int /*argc*/, char** /*argv*/) {
    304     EGLBoolean returnValue;
    305     EGLConfig myConfig = {0};
    306 
    307     EGLint context_attribs[] = { EGL_CONTEXT_CLIENT_VERSION, 2, EGL_NONE };
    308     EGLint s_configAttribs[] = {
    309             EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
    310             EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
    311             EGL_NONE };
    312     EGLint majorVersion;
    313     EGLint minorVersion;
    314     EGLContext context;
    315     EGLSurface surface;
    316     EGLint w, h;
    317 
    318     EGLDisplay dpy;
    319 
    320     checkEglError("<init>");
    321     dpy = eglGetDisplay(EGL_DEFAULT_DISPLAY);
    322     checkEglError("eglGetDisplay");
    323     if (dpy == EGL_NO_DISPLAY) {
    324         printf("eglGetDisplay returned EGL_NO_DISPLAY.\n");
    325         return 0;
    326     }
    327 
    328     returnValue = eglInitialize(dpy, &majorVersion, &minorVersion);
    329     checkEglError("eglInitialize", returnValue);
    330     fprintf(stderr, "EGL version %d.%d\n", majorVersion, minorVersion);
    331     if (returnValue != EGL_TRUE) {
    332         printf("eglInitialize failed\n");
    333         return 0;
    334     }
    335 
    336     if (!printEGLConfigurations(dpy)) {
    337         printf("printEGLConfigurations failed\n");
    338         return 0;
    339     }
    340 
    341     checkEglError("printEGLConfigurations");
    342 
    343     WindowSurface windowSurface;
    344     EGLNativeWindowType window = windowSurface.getSurface();
    345     returnValue = EGLUtils::selectConfigForNativeWindow(dpy, s_configAttribs, window, &myConfig);
    346     if (returnValue) {
    347         printf("EGLUtils::selectConfigForNativeWindow() returned %d", returnValue);
    348         return 0;
    349     }
    350 
    351     checkEglError("EGLUtils::selectConfigForNativeWindow");
    352 
    353     printf("Chose this configuration:\n");
    354     printEGLConfiguration(dpy, myConfig);
    355 
    356     EGLint winAttribs[] = {EGL_GL_COLORSPACE_KHR, EGL_GL_COLORSPACE_SRGB_KHR, EGL_NONE};
    357     surface = eglCreateWindowSurface(dpy, myConfig, window, winAttribs);
    358     checkEglError("eglCreateWindowSurface");
    359     if (surface == EGL_NO_SURFACE) {
    360         printf("eglCreateWindowSurface failed.\n");
    361         return 0;
    362     }
    363 
    364     context = eglCreateContext(dpy, myConfig, EGL_NO_CONTEXT, context_attribs);
    365     checkEglError("eglCreateContext");
    366     if (context == EGL_NO_CONTEXT) {
    367         printf("eglCreateContext failed\n");
    368         return 0;
    369     }
    370     returnValue = eglMakeCurrent(dpy, surface, surface, context);
    371     checkEglError("eglMakeCurrent", returnValue);
    372     if (returnValue != EGL_TRUE) {
    373         return 0;
    374     }
    375     eglQuerySurface(dpy, surface, EGL_WIDTH, &w);
    376     checkEglError("eglQuerySurface");
    377     eglQuerySurface(dpy, surface, EGL_HEIGHT, &h);
    378     checkEglError("eglQuerySurface");
    379 
    380     fprintf(stderr, "Window dimensions: %d x %d\n", w, h);
    381 
    382     printGLString("Version", GL_VERSION);
    383     printGLString("Vendor", GL_VENDOR);
    384     printGLString("Renderer", GL_RENDERER);
    385     printGLString("Extensions", GL_EXTENSIONS);
    386     printEGLString(dpy, "EGL Extensions", EGL_EXTENSIONS);
    387 
    388     if(!setupGraphics(w, h)) {
    389         fprintf(stderr, "Could not set up graphics.\n");
    390         return 0;
    391     }
    392 
    393     for (;;) {
    394         renderFrame();
    395         setSurfaceMetadata(dpy, surface);
    396         eglSwapBuffers(dpy, surface);
    397         checkEglError("eglSwapBuffers");
    398     }
    399 
    400     return 0;
    401 }
    402