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d32b7ebf20217f5053aaf0597cc1a7dcf86fc2a5
android_bootable_recovery/minuitwrp/Android.mk
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Vladimir Oltean d32b7ebf20 TW_ROTATION: add flag to handle hardware-rotated display panels 
* The existence of TW_ROTATION that implements this feature at the
  level of calls to libpixelflinger API closely mirrors the existence of
  ro.sf.hwrotation for surfaceflinger in LineageOS.
* A brute-force approach was previously attempted via the
  BOARD_HAS_FLIPPED_SCREEN makefile flag. That code iterated over the
  active display surface in a double-buffered setup, and performed a
  "smart" memcpy from the UI drawing surface (gr_draw) onto the display
  surface. The problem was that, without heavy loop optimizations, that
  code could have never scaled for 90 and 270 degree rotation.
  I tried and you could literally see the for loop with the naked eye
  while the display surface was updating.
* That code is now gone, but support for BOARD_HAS_FLIPPED_SCREEN := true
  is still there (now means TW_ROTATION := 180).
* This patch relies on the assumption that it is impossibly difficult
  and non-portable to rotate whole framebuffer display surfaces, in a
  way that is not dependent upon the graphics backend (adf, fbdev, drm,
  overlay etc). Therefore, it identifies the rendering primitives that
  the TWRP graphics stack exposes to the GUI application above, and
  implements hwrotation inside each of those calls instead:
    - gr_line(), gr_fill() - 2D geometric shapes (lines, rectangles)
    - gr_blit() - graphical image resources
    - gr_ttf_textExWH() - font rendering
    - gr_fb_width(), gr_fb_height() - framebuffer resolution
* The gist is to keep the backend and framebuffer (dimensions, row size
  etc) unchanged (because making changes there is asking for trouble),
  but present an altogether different reality to the calling API,
  according to the compile-time constant TW_ROTATION.
* All (x, y) API coordinates and shapes are transformed before being
  actually rendered as (x_disp, y_disp) display coordinates.
* With TW_ROTATION := 90 or 270 you can turn a landscape device into
  a portrait one, because the GUI is fooled by the reversed dimensions
  reported by gr_fb_width() and gr_fb_height() and renders the UI as
  for a different device.
* For blit and text rendering operations, figuring out the transformed
  coordinates in display space is not enough, as the surfaces that are
  to be rendered have to be rotated themselves. This is handled by
  allocating an intermediary rotated surface on each rendering
  operation (not ideal), so the code with the intermediary surface
  is compiled out for the TW_ROTATION := 0 case.
* This is still not as bad as rotating the whole framebuffer though, and
  on a msm8976 device the performance hit is not even noticeable (for
  software rendering).
* Currently there is no attempt to make a connection between the
  TW_ROTATION and the { RECOVERY_TOUCHSCREEN_SWAP_XY,
  RECOVERY_TOUCHSCREEN_FLIP_X, RECOVERY_TOUCHSCREEN_FLIP_Y } settings.

Change-Id: Ic8966ad5360c8a499649fdb16e242286640fd992
Signed-off-by: Vladimir Oltean <olteanv@gmail.com>
2019-03-18 11:39:38 -05:00

204 lines
6.3 KiB
Makefile
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LOCAL_PATH := $(call my-dir)
include $(CLEAR_VARS)
LOCAL_SRC_FILES := \
graphics.cpp \
graphics_fbdev.cpp \
resources.cpp \
truetype.cpp \
graphics_utils.cpp \
events.cpp
ifneq ($(TW_BOARD_CUSTOM_GRAPHICS),)
$(warning ****************************************************************************)
$(warning * TW_BOARD_CUSTOM_GRAPHICS support has been deprecated in TWRP. *)
$(warning ****************************************************************************)
$(error stopping)
endif
ifeq ($(TW_TARGET_USES_QCOM_BSP), true)
LOCAL_CFLAGS += -DMSM_BSP
LOCAL_SRC_FILES += graphics_overlay.cpp
ifeq ($(TARGET_PREBUILT_KERNEL),)
LOCAL_ADDITIONAL_DEPENDENCIES := $(TARGET_OUT_INTERMEDIATES)/KERNEL_OBJ/usr
LOCAL_C_INCLUDES += $(TARGET_OUT_INTERMEDIATES)/KERNEL_OBJ/usr/include
else
ifeq ($(TARGET_CUSTOM_KERNEL_HEADERS),)
LOCAL_C_INCLUDES += $(commands_recovery_local_path)/minuitwrp/include
else
LOCAL_C_INCLUDES += $(TARGET_CUSTOM_KERNEL_HEADERS)
endif
endif
else
LOCAL_C_INCLUDES += $(commands_recovery_local_path)/minuitwrp/include
# The header files required for adf graphics can cause compile errors
# with adf graphics.
ifneq ($(wildcard system/core/adf/Android.*),)
LOCAL_CFLAGS += -DHAS_ADF
LOCAL_SRC_FILES += graphics_adf.cpp
LOCAL_WHOLE_STATIC_LIBRARIES += libadf
endif
endif
ifeq ($(TW_NEW_ION_HEAP), true)
LOCAL_CFLAGS += -DNEW_ION_HEAP
endif
ifneq ($(wildcard external/libdrm/Android.*),)
LOCAL_CFLAGS += -DHAS_DRM
LOCAL_SRC_FILES += graphics_drm.cpp
ifneq ($(wildcard external/libdrm/Android.common.mk),)
LOCAL_WHOLE_STATIC_LIBRARIES += libdrm_platform
else
LOCAL_WHOLE_STATIC_LIBRARIES += libdrm
endif
endif
LOCAL_C_INCLUDES += \
external/libpng \
external/zlib \
system/core/include \
external/freetype/include \
external/libcxx/include
ifneq ($(TW_INCLUDE_JPEG),)
LOCAL_C_INCLUDES += \
external/jpeg
LOCAL_CFLAGS += -DTW_INCLUDE_JPEG
endif
ifeq ($(RECOVERY_TOUCHSCREEN_SWAP_XY), true)
LOCAL_CFLAGS += -DRECOVERY_TOUCHSCREEN_SWAP_XY
endif
ifeq ($(RECOVERY_TOUCHSCREEN_FLIP_X), true)
LOCAL_CFLAGS += -DRECOVERY_TOUCHSCREEN_FLIP_X
endif
ifeq ($(RECOVERY_TOUCHSCREEN_FLIP_Y), true)
LOCAL_CFLAGS += -DRECOVERY_TOUCHSCREEN_FLIP_Y
endif
ifeq ($(RECOVERY_GRAPHICS_FORCE_USE_LINELENGTH), true)
LOCAL_CFLAGS += -DRECOVERY_GRAPHICS_FORCE_USE_LINELENGTH
endif
ifeq ($(RECOVERY_GRAPHICS_FORCE_SINGLE_BUFFER), true)
LOCAL_CFLAGS += -DRECOVERY_GRAPHICS_FORCE_SINGLE_BUFFER
endif
#Remove the # from the line below to enable event logging
#TWRP_EVENT_LOGGING := true
ifeq ($(TWRP_EVENT_LOGGING), true)
LOCAL_CFLAGS += -D_EVENT_LOGGING
endif
ifeq ($(subst ",,$(TARGET_RECOVERY_FORCE_PIXEL_FORMAT)),RGBA_8888)
$(warning ****************************************************************************)
$(warning * TARGET_RECOVERY_FORCE_PIXEL_FORMAT := RGBA_8888 not implemented yet *)
$(warning ****************************************************************************)
$(error stopping)
LOCAL_CFLAGS += -DRECOVERY_RGBA
endif
ifeq ($(subst ",,$(TARGET_RECOVERY_FORCE_PIXEL_FORMAT)),RGBX_8888)
$(warning ****************************************************************************)
$(warning * TARGET_RECOVERY_FORCE_PIXEL_FORMAT := RGBX_8888 not implemented yet *)
$(warning ****************************************************************************)
$(error stopping)
LOCAL_CFLAGS += -DRECOVERY_RGBX
endif
ifeq ($(subst ",,$(TARGET_RECOVERY_FORCE_PIXEL_FORMAT)),BGRA_8888)
$(warning ****************************************************************************)
$(warning * TARGET_RECOVERY_FORCE_PIXEL_FORMAT := BGRA_8888 not implemented yet *)
$(warning ****************************************************************************)
$(error stopping)
LOCAL_CFLAGS += -DRECOVERY_BGRA
endif
ifeq ($(subst ",,$(TARGET_RECOVERY_FORCE_PIXEL_FORMAT)),RGB_565)
LOCAL_CFLAGS += -DRECOVERY_FORCE_RGB_565
endif
# This used to compare against values in double-quotes (which are just
# ordinary characters in this context). Strip double-quotes from the
# value so that either will work.
ifeq ($(subst ",,$(TARGET_RECOVERY_PIXEL_FORMAT)),ABGR_8888)
LOCAL_CFLAGS += -DRECOVERY_ABGR
endif
ifeq ($(subst ",,$(TARGET_RECOVERY_PIXEL_FORMAT)),RGBX_8888)
LOCAL_CFLAGS += -DRECOVERY_RGBX
endif
ifeq ($(subst ",,$(TARGET_RECOVERY_PIXEL_FORMAT)),BGRA_8888)
LOCAL_CFLAGS += -DRECOVERY_BGRA
endif
ifneq ($(TARGET_RECOVERY_OVERSCAN_PERCENT),)
LOCAL_CFLAGS += -DOVERSCAN_PERCENT=$(TARGET_RECOVERY_OVERSCAN_PERCENT)
else
LOCAL_CFLAGS += -DOVERSCAN_PERCENT=0
endif
ifeq ($(TW_SCREEN_BLANK_ON_BOOT), true)
LOCAL_CFLAGS += -DTW_SCREEN_BLANK_ON_BOOT
endif
ifeq ($(TW_FBIOPAN), true)
LOCAL_CFLAGS += -DTW_FBIOPAN
endif
ifneq ($(TW_ROTATION),)
ifeq (,$(filter 0 90 180 270, $(TW_ROTATION)))
$(error TW_ROTATION must be set to 0, 90, 180 or 270. Currently set to $(TW_ROTATION))
endif
LOCAL_CFLAGS += -DTW_ROTATION=$(TW_ROTATION)
else
# Support for old flag
ifeq ($(BOARD_HAS_FLIPPED_SCREEN), true)
LOCAL_CFLAGS += -DTW_ROTATION=180
else
LOCAL_CFLAGS += -DTW_ROTATION=0
endif
endif
ifeq ($(TW_IGNORE_MAJOR_AXIS_0), true)
LOCAL_CFLAGS += -DTW_IGNORE_MAJOR_AXIS_0
endif
ifeq ($(TW_IGNORE_MT_POSITION_0), true)
LOCAL_CFLAGS += -DTW_IGNORE_MT_POSITION_0
endif
ifeq ($(TW_IGNORE_ABS_MT_TRACKING_ID), true)
LOCAL_CFLAGS += -DTW_IGNORE_ABS_MT_TRACKING_ID
endif
ifneq ($(TW_INPUT_BLACKLIST),)
LOCAL_CFLAGS += -DTW_INPUT_BLACKLIST=$(TW_INPUT_BLACKLIST)
endif
ifneq ($(TW_WHITELIST_INPUT),)
LOCAL_CFLAGS += -DWHITELIST_INPUT=$(TW_WHITELIST_INPUT)
endif
ifeq ($(TW_DISABLE_TTF), true)
$(warning ****************************************************************************)
$(warning * TW_DISABLE_TTF support has been deprecated in TWRP. *)
$(warning ****************************************************************************)
$(error stopping)
endif
LOCAL_CLANG := true
LOCAL_CFLAGS += -DTWRES=\"$(TWRES_PATH)\"
LOCAL_SHARED_LIBRARIES += libft2 libz libc libcutils libpng libutils
ifneq ($(TW_INCLUDE_JPEG),)
LOCAL_SHARED_LIBRARIES += libjpeg
endif
LOCAL_STATIC_LIBRARIES += libpixelflinger_twrp
ifeq ($(shell test $(PLATFORM_SDK_VERSION) -gt 25; echo $$?),0)
LOCAL_SHARED_LIBRARIES += libcutils liblog libutils
endif
LOCAL_MODULE_TAGS := eng
LOCAL_MODULE := libminuitwrp
include $(BUILD_SHARED_LIBRARY)
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