6163091a2c
- renderscript now calls EGL directly instead of relying on this function - surfaceflinger also does its own EGLConfig selection - selectConfigForPixelFormat stays for legacy reason (many tests use it) but it now only tries to match the alpha channel of the format rather than the format itself. this will allow implementations who don't support the exact formats defined in the HAL to work properly. Bug: 4998223 Change-Id: Ic664dfc14d5072a514b6f77a115d1521bfc1578f
142 lines
4.3 KiB
C++
142 lines
4.3 KiB
C++
/*
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* Copyright (C) 2009 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 "EGLUtils"
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#include <cutils/log.h>
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#include <utils/Errors.h>
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#include <ui/EGLUtils.h>
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#include <EGL/egl.h>
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#include <system/graphics.h>
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#include <private/ui/android_natives_priv.h>
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// ----------------------------------------------------------------------------
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namespace android {
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// ----------------------------------------------------------------------------
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const char *EGLUtils::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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status_t EGLUtils::selectConfigForPixelFormat(
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EGLDisplay dpy,
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EGLint const* attrs,
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PixelFormat format,
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EGLConfig* outConfig)
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{
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EGLint numConfigs = -1, n=0;
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if (!attrs)
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return BAD_VALUE;
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if (outConfig == NULL)
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return BAD_VALUE;
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// Get all the "potential match" configs...
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if (eglChooseConfig(dpy, attrs, 0, 0, &numConfigs) == EGL_FALSE)
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return BAD_VALUE;
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if (numConfigs) {
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EGLConfig* const configs = new EGLConfig[numConfigs];
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if (eglChooseConfig(dpy, attrs, configs, numConfigs, &n) == EGL_FALSE) {
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delete [] configs;
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return BAD_VALUE;
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}
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bool hasAlpha = false;
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switch (format) {
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case HAL_PIXEL_FORMAT_RGBA_8888:
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case HAL_PIXEL_FORMAT_BGRA_8888:
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case HAL_PIXEL_FORMAT_RGBA_5551:
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case HAL_PIXEL_FORMAT_RGBA_4444:
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hasAlpha = true;
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break;
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}
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// The first config is guaranteed to over-satisfy the constraints
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EGLConfig config = configs[0];
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// go through the list and skip configs that over-satisfy our needs
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int i;
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for (i=0 ; i<n ; i++) {
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if (!hasAlpha) {
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EGLint alphaSize;
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eglGetConfigAttrib(dpy, configs[i], EGL_ALPHA_SIZE, &alphaSize);
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if (alphaSize > 0) {
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continue;
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}
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}
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config = configs[i];
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break;
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}
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delete [] configs;
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if (i<n) {
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*outConfig = config;
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return NO_ERROR;
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}
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}
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return NAME_NOT_FOUND;
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}
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status_t EGLUtils::selectConfigForNativeWindow(
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EGLDisplay dpy,
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EGLint const* attrs,
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EGLNativeWindowType window,
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EGLConfig* outConfig)
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{
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int err;
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int format;
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if (!window)
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return BAD_VALUE;
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if ((err = window->query(window, NATIVE_WINDOW_FORMAT, &format)) < 0) {
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return err;
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}
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return selectConfigForPixelFormat(dpy, attrs, format, outConfig);
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}
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// ----------------------------------------------------------------------------
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}; // namespace android
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// ----------------------------------------------------------------------------
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