// Perf impact (test was only done on a gs dump):
// Normal (fast): Message:Buffer detailed info: Buffer object 9 (bound to
// GL_PIXEL_UNPACK_BUFFER_ARB, usage hint is GL_STREAM_COPY) will use VIDEO
// memory as the source for buffer object operations.
//
// Persistent (slower): Message:Buffer detailed info: Buffer object 8
// (bound to GL_PIXEL_UNPACK_BUFFER_ARB, usage hint is GL_DYNAMIC_DRAW)
// will use DMA CACHED memory as the source for buffer object operations
void Init() {
glGenBuffers(countof(m_pool), m_pool);
for (size_t i = 0; i < countof(m_pool); i++) {
BindPbo();
glBufferStorage(GL_PIXEL_UNPACK_BUFFER, m_pbo_size, NULL, create_flags);
m_map[m_current_pbo] = (char*)glMapBufferRange(GL_PIXEL_UNPACK_BUFFER, 0, m_pbo_size, map_flags);
m_fence[m_current_pbo] = 0;
NextPbo();
}
UnbindPbo();
}
void NextPboWithSync() {
m_fence[m_current_pbo] = glFenceSync(GL_SYNC_GPU_COMMANDS_COMPLETE, 0);
NextPbo();
if (m_fence[m_current_pbo]) {
#ifdef ENABLE_OGL_DEBUG_FENCE
GLenum status = glClientWaitSync(m_fence[m_current_pbo], GL_SYNC_FLUSH_COMMANDS_BIT, GL_TIMEOUT_IGNORED);
#else
glClientWaitSync(m_fence[m_current_pbo], GL_SYNC_FLUSH_COMMANDS_BIT, GL_TIMEOUT_IGNORED);
#endif
glDeleteSync(m_fence[m_current_pbo]);
m_fence[m_current_pbo] = 0;
#ifdef ENABLE_OGL_DEBUG_FENCE
if (status != GL_ALREADY_SIGNALED) {
fprintf(stderr, "GL_PIXEL_UNPACK_BUFFER: Sync Sync! Buffer too small\n");
}
#endif
}
}
// Perf impact (test was only done on a gs dump):
// Normal (fast): Message:Buffer detailed info: Buffer object 9 (bound to
// GL_PIXEL_UNPACK_BUFFER_ARB, usage hint is GL_STREAM_COPY) will use VIDEO
// memory as the source for buffer object operations.
//
// Persistent (slower): Message:Buffer detailed info: Buffer object 8
// (bound to GL_PIXEL_UNPACK_BUFFER_ARB, usage hint is GL_DYNAMIC_DRAW)
// will use DMA CACHED memory as the source for buffer object operations
void Init() {
glGenBuffers(countof(m_pool), m_pool);
m_texture_storage = GLLoader::found_GL_ARB_buffer_storage;
for (size_t i = 0; i < countof(m_pool); i++) {
BindPbo();
if (m_texture_storage) {
glBufferStorage(GL_PIXEL_UNPACK_BUFFER, m_pbo_size, NULL, create_flags);
m_map[m_current_pbo] = (char*)glMapBufferRange(GL_PIXEL_UNPACK_BUFFER, 0, m_pbo_size, map_flags);
m_fence[m_current_pbo] = 0;
} else {
glBufferData(GL_PIXEL_UNPACK_BUFFER, m_pbo_size, NULL, GL_STREAM_COPY);
m_map[m_current_pbo] = NULL;
}
NextPbo();
}
UnbindPbo();
}
char* Map(uint32 size) {
char* map;
m_size = size;
if (m_size > m_pbo_size) {
fprintf(stderr, "BUG: PBO too small %d but need %d\n", m_pbo_size, m_size);
}
if (m_texture_storage) {
if (m_offset[m_current_pbo] + m_size >= m_pbo_size) {
//NextPbo(); // For test purpose
NextPboWithSync();
}
// Note: texsubimage will access currently bound buffer
// Pbo ready let's get a pointer
BindPbo();
map = m_map[m_current_pbo] + m_offset[m_current_pbo];
} else {
GLbitfield flags = GL_MAP_WRITE_BIT | GL_MAP_UNSYNCHRONIZED_BIT | GL_MAP_INVALIDATE_RANGE_BIT;
if (m_offset[m_current_pbo] + m_size >= m_pbo_size) {
NextPbo();
flags &= ~GL_MAP_INVALIDATE_RANGE_BIT;
flags |= GL_MAP_INVALIDATE_BUFFER_BIT;
}
// Pbo ready let's get a pointer
BindPbo();
// Be sure the map is aligned
map = (char*)glMapBufferRange(GL_PIXEL_UNPACK_BUFFER, m_offset[m_current_pbo], m_size, flags);
}
return map;
}
// Perf impact (test was only done on a gs dump):
// Normal (fast): Message:Buffer detailed info: Buffer object 9 (bound to
// GL_PIXEL_UNPACK_BUFFER_ARB, usage hint is GL_STREAM_COPY) will use VIDEO
// memory as the source for buffer object operations.
//
// Persistent (slower): Message:Buffer detailed info: Buffer object 8
// (bound to GL_PIXEL_UNPACK_BUFFER_ARB, usage hint is GL_DYNAMIC_DRAW)
// will use DMA CACHED memory as the source for buffer object operations
void Init() {
glGenBuffers(countof(m_pool), m_pool);
m_texture_storage = GLLoader::found_GL_ARB_buffer_storage;
// Code is really faster on MT driver. So far only nvidia support it
if (!GLLoader::nvidia_buggy_driver)
m_texture_storage &= (theApp.GetConfig("ogl_texture_storage", 0) == 1);
for (size_t i = 0; i < countof(m_pool); i++) {
BindPbo();
if (m_texture_storage) {
glBufferStorage(GL_PIXEL_UNPACK_BUFFER, m_pbo_size, NULL, create_flags);
m_map[m_current_pbo] = (char*)glMapBufferRange(GL_PIXEL_UNPACK_BUFFER, 0, m_pbo_size, map_flags);
m_fence[m_current_pbo] = 0;
} else {
glBufferData(GL_PIXEL_UNPACK_BUFFER, m_pbo_size, NULL, GL_STREAM_COPY);
m_map[m_current_pbo] = NULL;
}
NextPbo();
}
UnbindPbo();
}
