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gralloc: Disable ION allocation for HWC 

We got screen tearing issues because only one buffer was used
in /dev/graphics/fb0.

Credits goes to @Chronomonochome for his original commit.

Change-Id: I321bb19ce586a74319941046800f0db07ce7bf98
This commit is contained in:
Dominggoes Isakh 2019-02-15 22:08:09 +01:00 committed by Shilin Victor
parent 6cec77e050
commit 8af7c99f0d
1 changed files with 1 additions and 6 deletions
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7
exynos4/hal/libgralloc_ump/alloc_device.cpp
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@ -296,12 +296,7 @@ static int gralloc_alloc_buffer(alloc_device_t* dev, size_t size, int usage,
}
ret = -1;
if (usage & (GRALLOC_USAGE_HW_COMPOSER | GRALLOC_USAGE_HW_ION)) {
ALOGV("%s: Allocating for HWC via ION...", __func__);
// the handle is guaranteed to have this usage flag set
// if it is going to be used as an HWC layer (see hwcomposer.h in hardware/libhardware)
ret = gralloc_alloc_ion(dev, size, usage, format, &ion_fd, &ion_paddr, &priv_alloc_flag, &ump_mem_handle);
} else if (usage & (GRALLOC_USAGE_HW_RENDER | GRALLOC_USAGE_HW_TEXTURE)) {
if (usage & (GRALLOC_USAGE_HW_RENDER | GRALLOC_USAGE_HW_TEXTURE)) {
ALOGV("%s: Allocating graphicbuffer via ION...", __func__);
priv_alloc_flag = priv_alloc_flag | private_handle_t::PRIV_FLAGS_GRAPHICBUFFER;
ret = gralloc_alloc_ion(dev, size, usage, format, &ion_fd, &ion_paddr, &priv_alloc_flag, &ump_mem_handle);