352 lines
10 KiB
C++
352 lines
10 KiB
C++
/*
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* Copyright (C) 2007 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 <string.h>
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#include <math.h>
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#include <cutils/properties.h>
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#include <utils/RefBase.h>
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#include <utils/Log.h>
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#include <ui/PixelFormat.h>
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#include <ui/FramebufferNativeWindow.h>
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#include <ui/EGLUtils.h>
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#include <GLES/gl.h>
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#include <EGL/egl.h>
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#include <EGL/eglext.h>
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#include <pixelflinger/pixelflinger.h>
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#include "DisplayHardware/DisplayHardware.h"
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#include <hardware/copybit.h>
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#include <hardware/overlay.h>
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#include <hardware/gralloc.h>
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using namespace android;
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static __attribute__((noinline))
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void checkGLErrors()
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{
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do {
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// there could be more than one error flag
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GLenum error = glGetError();
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if (error == GL_NO_ERROR)
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break;
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LOGE("GL error 0x%04x", int(error));
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} while(true);
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}
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static __attribute__((noinline))
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void checkEGLErrors(const char* token)
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{
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EGLint error = eglGetError();
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if (error && error != EGL_SUCCESS) {
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LOGE("%s: EGL error 0x%04x (%s)",
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token, int(error), EGLUtils::strerror(error));
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}
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}
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/*
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* Initialize the display to the specified values.
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*
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*/
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DisplayHardware::DisplayHardware(
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const sp<SurfaceFlinger>& flinger,
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uint32_t dpy)
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: DisplayHardwareBase(flinger, dpy)
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{
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init(dpy);
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}
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DisplayHardware::~DisplayHardware()
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{
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fini();
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}
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float DisplayHardware::getDpiX() const { return mDpiX; }
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float DisplayHardware::getDpiY() const { return mDpiY; }
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float DisplayHardware::getDensity() const { return mDensity; }
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float DisplayHardware::getRefreshRate() const { return mRefreshRate; }
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int DisplayHardware::getWidth() const { return mWidth; }
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int DisplayHardware::getHeight() const { return mHeight; }
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PixelFormat DisplayHardware::getFormat() const { return mFormat; }
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void DisplayHardware::init(uint32_t dpy)
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{
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mNativeWindow = new FramebufferNativeWindow();
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framebuffer_device_t const * fbDev = mNativeWindow->getDevice();
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mOverlayEngine = NULL;
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hw_module_t const* module;
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if (hw_get_module(OVERLAY_HARDWARE_MODULE_ID, &module) == 0) {
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overlay_control_open(module, &mOverlayEngine);
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}
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// initialize EGL
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EGLint attribs[] = {
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EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
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EGL_NONE, 0,
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EGL_NONE
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};
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// debug: disable h/w rendering
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char property[PROPERTY_VALUE_MAX];
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if (property_get("debug.sf.hw", property, NULL) > 0) {
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if (atoi(property) == 0) {
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LOGW("H/W composition disabled");
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attribs[2] = EGL_CONFIG_CAVEAT;
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attribs[3] = EGL_SLOW_CONFIG;
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}
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}
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EGLint w, h, dummy;
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EGLint numConfigs=0;
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EGLSurface surface;
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EGLContext context;
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mFlags = CACHED_BUFFERS;
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// TODO: all the extensions below should be queried through
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// eglGetProcAddress().
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EGLDisplay display = eglGetDisplay(EGL_DEFAULT_DISPLAY);
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eglInitialize(display, NULL, NULL);
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eglGetConfigs(display, NULL, 0, &numConfigs);
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EGLConfig config;
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status_t err = EGLUtils::selectConfigForNativeWindow(
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display, attribs, mNativeWindow.get(), &config);
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LOGE_IF(err, "couldn't find an EGLConfig matching the screen format");
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EGLint r,g,b,a;
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eglGetConfigAttrib(display, config, EGL_RED_SIZE, &r);
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eglGetConfigAttrib(display, config, EGL_GREEN_SIZE, &g);
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eglGetConfigAttrib(display, config, EGL_BLUE_SIZE, &b);
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eglGetConfigAttrib(display, config, EGL_ALPHA_SIZE, &a);
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/*
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* Gather EGL extensions
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*/
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const char* const egl_extensions = eglQueryString(
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display, EGL_EXTENSIONS);
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LOGI("EGL informations:");
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LOGI("# of configs : %d", numConfigs);
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LOGI("vendor : %s", eglQueryString(display, EGL_VENDOR));
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LOGI("version : %s", eglQueryString(display, EGL_VERSION));
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LOGI("extensions: %s", egl_extensions);
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LOGI("Client API: %s", eglQueryString(display, EGL_CLIENT_APIS)?:"Not Supported");
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LOGI("EGLSurface: %d-%d-%d-%d, config=%p", r, g, b, a, config);
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if (mNativeWindow->isUpdateOnDemand()) {
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mFlags |= PARTIAL_UPDATES;
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}
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if (eglGetConfigAttrib(display, config, EGL_CONFIG_CAVEAT, &dummy) == EGL_TRUE) {
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if (dummy == EGL_SLOW_CONFIG)
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mFlags |= SLOW_CONFIG;
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}
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/*
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* Create our main surface
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*/
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surface = eglCreateWindowSurface(display, config, mNativeWindow.get(), NULL);
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if (mFlags & PARTIAL_UPDATES) {
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// if we have partial updates, we definitely don't need to
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// preserve the backbuffer, which may be costly.
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eglSurfaceAttrib(display, surface,
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EGL_SWAP_BEHAVIOR, EGL_BUFFER_DESTROYED);
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}
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if (eglQuerySurface(display, surface, EGL_SWAP_BEHAVIOR, &dummy) == EGL_TRUE) {
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if (dummy == EGL_BUFFER_PRESERVED) {
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mFlags |= BUFFER_PRESERVED;
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}
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}
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eglQuerySurface(display, surface, EGL_WIDTH, &mWidth);
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eglQuerySurface(display, surface, EGL_HEIGHT, &mHeight);
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#ifdef EGL_ANDROID_swap_rectangle
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if (strstr(egl_extensions, "EGL_ANDROID_swap_rectangle")) {
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if (eglSetSwapRectangleANDROID(display, surface,
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0, 0, mWidth, mHeight) == EGL_TRUE) {
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// This could fail if this extension is not supported by this
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// specific surface (of config)
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mFlags |= SWAP_RECTANGLE;
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}
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}
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// when we have the choice between PARTIAL_UPDATES and SWAP_RECTANGLE
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// choose PARTIAL_UPDATES, which should be more efficient
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if (mFlags & PARTIAL_UPDATES)
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mFlags &= ~SWAP_RECTANGLE;
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#endif
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LOGI("flags : %08x", mFlags);
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mDpiX = mNativeWindow->xdpi;
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mDpiY = mNativeWindow->ydpi;
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mRefreshRate = fbDev->fps;
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/* Read density from build-specific ro.sf.lcd_density property
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* except if it is overridden by qemu.sf.lcd_density.
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*/
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if (property_get("qemu.sf.lcd_density", property, NULL) <= 0) {
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if (property_get("ro.sf.lcd_density", property, NULL) <= 0) {
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LOGW("ro.sf.lcd_density not defined, using 160 dpi by default.");
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strcpy(property, "160");
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}
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} else {
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/* for the emulator case, reset the dpi values too */
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mDpiX = mDpiY = atoi(property);
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}
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mDensity = atoi(property) * (1.0f/160.0f);
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/*
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* Create our OpenGL ES context
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*/
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context = eglCreateContext(display, config, NULL, NULL);
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/*
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* Gather OpenGL ES extensions
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*/
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eglMakeCurrent(display, surface, surface, context);
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const char* const gl_extensions = (const char*)glGetString(GL_EXTENSIONS);
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const char* const gl_renderer = (const char*)glGetString(GL_RENDERER);
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LOGI("OpenGL informations:");
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LOGI("vendor : %s", glGetString(GL_VENDOR));
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LOGI("renderer : %s", gl_renderer);
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LOGI("version : %s", glGetString(GL_VERSION));
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LOGI("extensions: %s", gl_extensions);
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if (strstr(gl_renderer, "Adreno")) {
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LOGD("Assuming uncached graphics buffers.");
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mFlags &= ~CACHED_BUFFERS;
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}
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if (strstr(gl_extensions, "GL_ARB_texture_non_power_of_two")) {
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mFlags |= NPOT_EXTENSION;
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}
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if (strstr(gl_extensions, "GL_OES_draw_texture")) {
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mFlags |= DRAW_TEXTURE_EXTENSION;
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}
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#ifdef EGL_ANDROID_image_native_buffer
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if (strstr( gl_extensions, "GL_OES_EGL_image") &&
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(strstr(egl_extensions, "EGL_KHR_image_base") ||
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strstr(egl_extensions, "EGL_KHR_image")) &&
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strstr(egl_extensions, "EGL_ANDROID_image_native_buffer")) {
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mFlags |= DIRECT_TEXTURE;
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}
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#else
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#warning "EGL_ANDROID_image_native_buffer not supported"
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#endif
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// Unbind the context from this thread
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eglMakeCurrent(display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
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mDisplay = display;
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mConfig = config;
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mSurface = surface;
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mContext = context;
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mFormat = fbDev->format;
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mPageFlipCount = 0;
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}
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/*
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* Clean up. Throw out our local state.
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*
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* (It's entirely possible we'll never get here, since this is meant
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* for real hardware, which doesn't restart.)
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*/
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void DisplayHardware::fini()
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{
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eglMakeCurrent(mDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
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eglTerminate(mDisplay);
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overlay_control_close(mOverlayEngine);
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}
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void DisplayHardware::releaseScreen() const
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{
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DisplayHardwareBase::releaseScreen();
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}
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void DisplayHardware::acquireScreen() const
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{
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DisplayHardwareBase::acquireScreen();
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}
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uint32_t DisplayHardware::getPageFlipCount() const {
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return mPageFlipCount;
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}
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status_t DisplayHardware::compositionComplete() const {
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return mNativeWindow->compositionComplete();
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}
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void DisplayHardware::flip(const Region& dirty) const
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{
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checkGLErrors();
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EGLDisplay dpy = mDisplay;
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EGLSurface surface = mSurface;
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#ifdef EGL_ANDROID_swap_rectangle
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if (mFlags & SWAP_RECTANGLE) {
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const Region newDirty(dirty.intersect(bounds()));
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const Rect b(newDirty.getBounds());
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eglSetSwapRectangleANDROID(dpy, surface,
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b.left, b.top, b.width(), b.height());
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}
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#endif
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if (mFlags & PARTIAL_UPDATES) {
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mNativeWindow->setUpdateRectangle(dirty.getBounds());
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}
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mPageFlipCount++;
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eglSwapBuffers(dpy, surface);
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checkEGLErrors("eglSwapBuffers");
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// for debugging
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//glClearColor(1,0,0,0);
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//glClear(GL_COLOR_BUFFER_BIT);
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}
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uint32_t DisplayHardware::getFlags() const
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{
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return mFlags;
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}
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void DisplayHardware::makeCurrent() const
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{
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eglMakeCurrent(mDisplay, mSurface, mSurface, mContext);
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}
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