354 lines
10 KiB
C++
354 lines
10 KiB
C++
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/*
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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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#define LOG_TAG "SurfaceFlinger"
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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/Log.h>
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#include <ui/EGLDisplaySurface.h>
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#include <GLES/gl.h>
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#include <EGL/eglext.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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using namespace android;
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static __attribute__((noinline))
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const char *egl_strerror(EGLint err)
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{
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switch (err){
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case EGL_SUCCESS: return "EGL_SUCCESS";
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case EGL_NOT_INITIALIZED: return "EGL_NOT_INITIALIZED";
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case EGL_BAD_ACCESS: return "EGL_BAD_ACCESS";
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case EGL_BAD_ALLOC: return "EGL_BAD_ALLOC";
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case EGL_BAD_ATTRIBUTE: return "EGL_BAD_ATTRIBUTE";
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case EGL_BAD_CONFIG: return "EGL_BAD_CONFIG";
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case EGL_BAD_CONTEXT: return "EGL_BAD_CONTEXT";
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case EGL_BAD_CURRENT_SURFACE: return "EGL_BAD_CURRENT_SURFACE";
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case EGL_BAD_DISPLAY: return "EGL_BAD_DISPLAY";
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case EGL_BAD_MATCH: return "EGL_BAD_MATCH";
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case EGL_BAD_NATIVE_PIXMAP: return "EGL_BAD_NATIVE_PIXMAP";
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case EGL_BAD_NATIVE_WINDOW: return "EGL_BAD_NATIVE_WINDOW";
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case EGL_BAD_PARAMETER: return "EGL_BAD_PARAMETER";
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case EGL_BAD_SURFACE: return "EGL_BAD_SURFACE";
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case EGL_CONTEXT_LOST: return "EGL_CONTEXT_LOST";
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default: return "UNKNOWN";
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}
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}
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static __attribute__((noinline))
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void checkGLErrors()
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{
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GLenum error = glGetError();
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if (error != GL_NO_ERROR)
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LOGE("GL error 0x%04x", int(error));
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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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// GLESonGL seems to be returning 0 when there is no errors?
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if (error && error != EGL_SUCCESS)
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LOGE("%s error 0x%04x (%s)",
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token, int(error), egl_strerror(error));
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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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// initialize EGL
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const EGLint attribs[] = {
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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_DEPTH_SIZE, 0,
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EGL_NONE
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};
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EGLint w, h, dummy;
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EGLint numConfigs, n;
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EGLConfig config;
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EGLSurface surface;
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EGLContext context;
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mFlags = 0;
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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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eglChooseConfig(display, attribs, &config, 1, &n);
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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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// TODO: get this from the devfb driver (probably should be HAL module)
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mFlags |= SWAP_RECTANGLE_EXTENSION;
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// TODO: get the real "update_on_demand" behavior (probably should be HAL module)
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mFlags |= UPDATE_ON_DEMAND;
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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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mDisplaySurface = new EGLDisplaySurface();
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surface = eglCreateWindowSurface(display, config, mDisplaySurface.get(), NULL);
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//checkEGLErrors("eglCreateDisplaySurfaceANDROID");
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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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GLint value = EGL_UNKNOWN;
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eglQuerySurface(display, surface, EGL_HORIZONTAL_RESOLUTION, &value);
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if (value == EGL_UNKNOWN) {
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mDpiX = 160.0f;
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} else {
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mDpiX = 25.4f * float(value)/EGL_DISPLAY_SCALING;
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}
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value = EGL_UNKNOWN;
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eglQuerySurface(display, surface, EGL_VERTICAL_RESOLUTION, &value);
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if (value == EGL_UNKNOWN) {
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mDpiY = 160.0f;
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} else {
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mDpiY = 25.4f * float(value)/EGL_DISPLAY_SCALING;
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}
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mRefreshRate = 60.f; // TODO: get the real refresh rate
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char property[PROPERTY_VALUE_MAX];
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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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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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//checkEGLErrors("eglCreateContext");
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eglQuerySurface(display, surface, EGL_WIDTH, &mWidth);
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eglQuerySurface(display, surface, EGL_HEIGHT, &mHeight);
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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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LOGI("OpenGL informations:");
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LOGI("vendor : %s", glGetString(GL_VENDOR));
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LOGI("renderer : %s", glGetString(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_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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if (strstr(gl_extensions, "GL_ANDROID_direct_texture")) {
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mFlags |= DIRECT_TEXTURE;
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}
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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 = GGL_PIXEL_FORMAT_RGB_565;
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hw_module_t const* module;
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mBlitEngine = NULL;
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if (hw_get_module(COPYBIT_HARDWARE_MODULE_ID, &module) == 0) {
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copybit_open(module, &mBlitEngine);
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}
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mOverlayEngine = NULL;
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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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}
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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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copybit_close(mBlitEngine);
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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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void DisplayHardware::getDisplaySurface(copybit_image_t* img) const
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{
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img->w = mDisplaySurface->stride;
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img->h = mDisplaySurface->height;
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img->format = mDisplaySurface->format;
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img->offset = mDisplaySurface->offset;
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img->base = (void*)mDisplaySurface->base;
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img->fd = mDisplaySurface->fd;
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}
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void DisplayHardware::getDisplaySurface(GGLSurface* fb) const
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{
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fb->version= sizeof(GGLSurface);
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fb->width = mDisplaySurface->width;
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fb->height = mDisplaySurface->height;
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fb->stride = mDisplaySurface->stride;
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fb->format = mDisplaySurface->format;
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fb->data = (GGLubyte*)mDisplaySurface->base + mDisplaySurface->offset;
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}
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uint32_t DisplayHardware::getPageFlipCount() const {
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return mDisplaySurface->getPageFlipCount();
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}
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/*
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* "Flip" the front and back buffers.
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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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Region newDirty(dirty);
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newDirty.andSelf(Rect(mWidth, mHeight));
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if (mFlags & BUFFER_PRESERVED) {
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const Region copyback(mDirty.subtract(newDirty));
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mDirty = newDirty;
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mDisplaySurface->copyFrontToBack(copyback);
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}
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if (mFlags & SWAP_RECTANGLE_EXTENSION) {
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const Rect& b(newDirty.bounds());
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mDisplaySurface->setSwapRectangle(
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b.left, b.top, b.width(), b.height());
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}
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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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void DisplayHardware::copyFrontToImage(const copybit_image_t& front) const {
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mDisplaySurface->copyFrontToImage(front);
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}
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void DisplayHardware::copyBackToImage(const copybit_image_t& front) const {
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mDisplaySurface->copyBackToImage(front);
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}
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