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fbaccel: add hack on spark to avoid too frequent blitting

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This commit is contained in:
Stefan Seyfried
2013-09-01 18:23:33 +02:00
parent ff46b6906d
commit a5999ea165
2 changed files with 73 additions and 0 deletions
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58
src/driver/fbaccel.cpp
View File

@@ -56,6 +56,8 @@
extern GLFramebuffer *glfb;
#endif
#include <driver/abstime.h>
//#undef USE_NEVIS_GXA //FIXME
/*******************************************************************************/
#ifdef USE_NEVIS_GXA
@@ -164,6 +166,14 @@ static int backbuf_sz = 0;
void CFbAccel::waitForIdle(void)
{
blit_mutex.lock();
if (blit_pending)
{
blit_mutex.unlock();
_blit();
return;
}
blit_mutex.unlock();
OpenThreads::ScopedLock<OpenThreads::Mutex> m_lock(mutex);
ioctl(fb->fd, STMFBIO_SYNC_BLITTER);
}
@@ -234,6 +244,7 @@ CFbAccel::CFbAccel(CFrameBuffer *_fb)
bpafd = -1;
return;
}
OpenThreads::Thread::start();
#endif
#ifdef USE_NEVIS_GXA
@@ -261,6 +272,12 @@ CFbAccel::CFbAccel(CFrameBuffer *_fb)
CFbAccel::~CFbAccel()
{
#if HAVE_SPARK_HARDWARE
if (blit_thread)
{
blit_thread = false;
blit(); /* wakes up the thread */
OpenThreads::Thread::join();
}
if (backbuffer)
{
fprintf(stderr, "CFbAccel: unmap backbuffer\n");
@@ -604,6 +621,7 @@ void CFbAccel::blit2FB(void *fbbuff, uint32_t width, uint32_t height, uint32_t x
blt_data.dstMemSize = fb->stride * fb->yRes + lbb_off;
OpenThreads::ScopedLock<OpenThreads::Mutex> m_lock(mutex);
ioctl(fb->fd, STMFBIO_SYNC_BLITTER);
if (fbbuff != backbuffer)
memmove(backbuffer, fbbuff, mem_sz);
// icons are so small that they will still be in cache
@@ -705,7 +723,47 @@ void CFbAccel::setupGXA()
#endif
#if HAVE_SPARK_HARDWARE
#define BLIT_INTERVAL 40
void CFbAccel::run()
{
printf("CFbAccel::run start\n");
time_t last_blit = 0;
blit_pending = false;
blit_thread = true;
blit_mutex.lock();
while (blit_thread) {
if (blit_pending)
blit_cond.wait(&blit_mutex, BLIT_INTERVAL+1);
else
blit_cond.wait(&blit_mutex);
time_t now = time_monotonic_ms();
if (now - last_blit < BLIT_INTERVAL)
{
blit_pending = true;
//printf("CFbAccel::run: skipped, time %ld\n", now - last_blit);
}
else
{
blit_pending = false;
blit_mutex.unlock();
_blit();
blit_mutex.lock();
last_blit = now;
}
}
blit_mutex.unlock();
printf("CFbAccel::run end\n");
}
void CFbAccel::blit()
{
//printf("CFbAccel::blit\n");
blit_mutex.lock();
blit_cond.signal();
blit_mutex.unlock();
}
void CFbAccel::_blit()
{
#ifdef PARTIAL_BLIT
if (to_blit.xs == INT_MAX)

15
src/driver/framebuffer_ng.h
View File

@@ -36,6 +36,10 @@
#include <vector>
#include <OpenThreads/Mutex>
#include <OpenThreads/ScopedLock>
#if HAVE_SPARK_HARDWARE
#include <OpenThreads/Thread>
#include <OpenThreads/Condition>
#endif
#define fb_pixel_t uint32_t
@@ -64,6 +68,9 @@ typedef struct fb_var_screeninfo t_fb_var_screeninfo;
class CFrameBuffer;
class CFbAccel
#if HAVE_SPARK_HARDWARE
: public OpenThreads::Thread
#endif
{
private:
CFrameBuffer *fb;
@@ -76,6 +83,14 @@ class CFbAccel
void add_gxa_sync_marker(void);
#endif /* USE_NEVIS_GXA */
void setColor(fb_pixel_t col);
#if HAVE_SPARK_HARDWARE
void run(void);
void _blit(void);
bool blit_thread;
bool blit_pending;
OpenThreads::Condition blit_cond;
OpenThreads::Mutex blit_mutex;
#endif
public:
fb_pixel_t *backbuffer;
fb_pixel_t *lbb;