Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit d75f84d6 authored by Mathias Agopian's avatar Mathias Agopian
Browse files

reduce PB size from 2MB to 512KB 

this allows us to enable h/w acceleration on low-end
devices while keeping memory usage down.

Bug: 6557760
Change-Id: I8af2de3038dc2579360b8b73aa452cb7a0e506a9
parent 4824d40a

opengl/libs/Android.mk

+6 −1
Original line number Diff line number Diff line
@@ -44,6 +44,11 @@ ifeq ($(TARGET_BOARD_PLATFORM),msm7k) 
  LOCAL_CFLAGS += -DADRENO130=1

endif



ifeq ($(TARGET_BOARD_PLATFORM), s5pc110)

  # see Loader.cpp for details

  LOCAL_CFLAGS += -DSYSTEMUI_PBSIZE_HACK=1

endif



ifeq ($(ARCH_ARM_HAVE_TLS_REGISTER),true)

  LOCAL_CFLAGS += -DHAVE_ARM_TLS_REGISTER

endif

opengl/libs/EGL/Loader.cpp

+47 −0
Original line number Diff line number Diff line
@@ -81,6 +81,24 @@ checkGlesEmulationStatus(void) 


// ----------------------------------------------------------------------------



static char const * getProcessCmdline() {

    long pid = getpid();

    char procPath[128];

    snprintf(procPath, 128, "/proc/%ld/cmdline", pid);

    FILE * file = fopen(procPath, "r");

    if (file) {

        static char cmdline[256];

        char *str = fgets(cmdline, sizeof(cmdline) - 1, file);

        fclose(file);

        if (str) {

            return cmdline;

        }

    }

    return NULL;

}



// ----------------------------------------------------------------------------



Loader::driver_t::driver_t(void* gles) 

{

    dso[0] = gles;
@@ -280,6 +298,35 @@ void *Loader::load_driver(const char* kind, const char *tag, 
        ALOGE_IF(!getProcAddress, 

                "can't find eglGetProcAddress() in %s", driver_absolute_path);



#ifdef SYSTEMUI_PBSIZE_HACK

#warning "SYSTEMUI_PBSIZE_HACK enabled"

        /*

         * TODO: replace SYSTEMUI_PBSIZE_HACK by something less hackish

         *

         * Here we adjust the PB size from its default value to 512KB which

         * is the minimum acceptable for the systemui process.

         * We do this on low-end devices only because it allows us to enable

         * h/w acceleration in the systemui process while keeping the

         * memory usage down.

         *

         * Obviously, this is the wrong place and wrong way to make this

         * adjustment, but at the time of this writing this was the safest

         * solution.

         */

        const char *cmdline = getProcessCmdline();

        if (strstr(cmdline, "systemui")) {

            void *imgegl = dlopen("/vendor/lib/libIMGegl.so", RTLD_LAZY);

            if (imgegl) {

                unsigned int *PVRDefaultPBS =

                        (unsigned int *)dlsym(imgegl, "PVRDefaultPBS");

                if (PVRDefaultPBS) {

                    ALOGD("setting default PBS to 512KB, was %d KB", *PVRDefaultPBS / 1024);

                    *PVRDefaultPBS = 512*1024;

                }

            }

        }

#endif



        egl_t* egl = &cnx->egl;

        __eglMustCastToProperFunctionPointerType* curr =

            (__eglMustCastToProperFunctionPointerType*)egl;