commit b0a9f9d7d27163534c1c334bf72f2f3c9edc32c9
author Tatenda Chipeperekwa <tatendac@codeaurora.org> Mon Jan 20 09:23:21 2014 -0800
committer Gerrit - the friendly Code Review server <code-review@localhost> Wed Jan 22 11:49:03 2014 -0800
tree ceab047ccb24bd48b9dfca1f9c947bbdaf04d8f3
parent f19f84dd054af49d2fc27ebcc343156ea8f3df30

hwc: virtual display: Use outbuf handle width to configure xres

Use outbuf handle width to configure display xres, since that would
have the necessary alignment. The outbuf is guaranteed to be valid
by the framework during hwc_prepare.

We use the framebuffer layer's display frame to obtain the actual
width. For example, the actual width could be 720 but the aligned
width would be 736.

Change-Id: I5afe38001be8116e1ad6a9f46c7ecaa50b5f25a2

libhwcomposer/hwc_virtual.cpp

diff --git a/libhwcomposer/hwc_virtual.cpp b/libhwcomposer/hwc_virtual.cpp
index fec5222..51ade32 100644
--- a/libhwcomposer/hwc_virtual.cpp
+++ b/libhwcomposer/hwc_virtual.cpp
@@ -90,7 +90,7 @@
     hwc_context_t* ctx = (hwc_context_t*)(dev);
     const int dpy = HWC_DISPLAY_VIRTUAL;
 
-    if (list && list->numHwLayers > 0) {
+    if (list && list->outbuf && list->numHwLayers > 0) {
         reset_layer_prop(ctx, dpy, list->numHwLayers - 1);
         uint32_t last = list->numHwLayers - 1;
         hwc_layer_1_t *fbLayer = &list->hwLayers[last];
@@ -108,7 +108,8 @@
 
         ctx->dpyAttr[dpy].isConfiguring = false;
         ctx->dpyAttr[dpy].fd = Writeback::getInstance()->getFbFd();
-        Writeback::getInstance()->configureDpyInfo(fbWidth, fbHeight);
+        private_handle_t *ohnd = (private_handle_t *)list->outbuf;
+        Writeback::getInstance()->configureDpyInfo(ohnd->width, ohnd->height);
         setListStats(ctx, list, dpy);
 
         if(ctx->mMDPComp[dpy]->prepare(ctx, list) < 0) {