Multiplex streaming buffer contents on Vulkan

[libs/gl.git] / source / core / bufferable.cpp

diff --git a/source/core/bufferable.cpp b/source/core/bufferable.cpp
index 374c4eeb3b83ee5d1617b9249383696a9f7aa15f..69588dddef301d72f0eda7128209a5fba632cc63 100644 (file)
--- a/source/core/bufferable.cpp
+++ b/source/core/bufferable.cpp
@@ -50,7 +50,7 @@ void Bufferable::use_buffer(Buffer *buf, Bufferable *prev)
        }
 
        location_dirty = true;
-       dirty = true;
+       mark_dirty();
        update_offset();
 }
 
@@ -60,21 +60,30 @@ void Bufferable::change_buffer(Buffer *buf)
        {
                b->buffer = buf;
                b->location_dirty = true;
-               b->dirty = true;
+               b->mark_dirty();
        }
        for(Bufferable *b=prev_in_buffer; b; b=b->prev_in_buffer)
        {
                b->buffer = buf;
                b->location_dirty = true;
-               b->dirty = true;
+               b->mark_dirty();
        }
 }
 
-size_t Bufferable::get_required_buffer_size() const
+size_t Bufferable::get_required_buffer_size(bool align) const
 {
        const Bufferable *last = this;
        for(; last->next_in_buffer; last=last->next_in_buffer) ;
-       return last->offset+last->get_data_size();
+       size_t size = last->offset+last->get_data_size();
+       if(align)
+       {
+               const Bufferable *first = this;
+               for(; first->prev_in_buffer; first=first->prev_in_buffer) ;
+               size_t alignment = first->get_alignment();
+               size += alignment-1;
+               size -= size%alignment;
+       }
+       return size;
 }
 
 void Bufferable::unlink_from_buffer()
@@ -105,7 +114,7 @@ void Bufferable::update_offset()
        {
                offset = new_offset;
                location_dirty = true;
-               dirty = true;
+               mark_dirty();
        }
 
        if(next_in_buffer)
@@ -113,15 +122,26 @@ void Bufferable::update_offset()
        else if(buffer && offset+get_data_size()>buffer->get_size())
        {
                location_dirty = true;
-               dirty = true;
+               mark_dirty();
        }
 }
 
-void Bufferable::upload_data(char *target) const
+void Bufferable::mark_dirty()
+{
+       dirty = 0xFF;
+}
+
+void Bufferable::upload_data(unsigned frame, char *target) const
 {
        if(!buffer)
                throw invalid_operation("Bufferable::upload_data");
 
+       unsigned multi_buf = buffer->get_multiplicity();
+       frame %= multi_buf;
+       uint8_t mask = 1<<frame;
+       if(!(dirty&mask))
+               return;
+
        size_t data_size = get_data_size();
        if(location_dirty)
        {
@@ -135,8 +155,17 @@ void Bufferable::upload_data(char *target) const
                copy(source, source+data_size, target);
        }
        else
-               buffer->sub_data(offset, data_size, get_data_pointer());
-       dirty = false;
+               buffer->sub_data(frame*buffer->get_size()+offset, data_size, get_data_pointer());
+       dirty &= ~mask;
+       if(!(dirty&((1<<multi_buf)-1)))
+               dirty = 0;
+}
+
+Bufferable::AsyncUpdater *Bufferable::create_async_updater() const
+{
+       if(!buffer || buffer->get_multiplicity()>1)
+               throw invalid_operation("Bufferable::create_async_updater");
+       return new AsyncUpdater(*this);
 }
 
 
@@ -154,14 +183,14 @@ Bufferable::AsyncUpdater::~AsyncUpdater()
 
 void Bufferable::AsyncUpdater::upload_data()
 {
-       bufferable.upload_data(mapped_address+bufferable.offset);
+       bufferable.upload_data(0, mapped_address+bufferable.offset);
        // Update all bufferables in the same buffer at once
        for(const Bufferable *b=bufferable.prev_in_buffer; b; b=b->prev_in_buffer)
                if(b->dirty)
-                       b->upload_data(mapped_address+b->offset);
+                       b->upload_data(0, mapped_address+b->offset);
        for(const Bufferable *b=bufferable.next_in_buffer; b; b=b->next_in_buffer)
                if(b->dirty)
-                       b->upload_data(mapped_address+b->offset);
+                       b->upload_data(0, mapped_address+b->offset);
 }
 
 } // namespace GL