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Upload correct amount of vertex data in CACHED_CONTAINER_RAM 

Previous implementation uploaded only vertices with indices less
or equal to the number of stored vertices, which is invalid when
the container become fragmented.

Fixes: lp:1712887
* https://bugs.launchpad.net/kicad/+bug/1712887
This commit is contained in:
Maciej Suminski 2017-09-09 18:00:58 +02:00
parent 342bb2bf78
commit 8c7175b00d
3 changed files with 11 additions and 2 deletions
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7
common/gal/opengl/cached_container.cpp
View File

@ -45,7 +45,7 @@
using namespace KIGFX;
CACHED_CONTAINER::CACHED_CONTAINER( unsigned int aSize ) :
VERTEX_CONTAINER( aSize ), m_item( NULL ), m_chunkSize( 0 ), m_chunkOffset( 0 )
VERTEX_CONTAINER( aSize ), m_item( NULL ), m_chunkSize( 0 ), m_chunkOffset( 0 ), m_maxIndex( 0 )
{
// In the beginning there is only free space
m_freeChunks.insert( std::make_pair( aSize, 0 ) );
@ -84,6 +84,8 @@ void CACHED_CONTAINER::FinishItem()
// Add the not used memory back to the pool
addFreeChunk( itemOffset + itemSize, m_chunkSize - itemSize );
// mergeFreeChunks(); // veery slow and buggy
m_maxIndex = std::max( itemOffset + itemSize, m_maxIndex );
}
if( itemSize > 0 )
@ -189,6 +191,7 @@ void CACHED_CONTAINER::Delete( VERTEX_ITEM* aItem )
void CACHED_CONTAINER::Clear()
{
m_freeSpace = m_currentSize;
m_maxIndex = 0;
m_failed = false;
// Set the size of all the stored VERTEX_ITEMs to 0, so it is clear that they are not held
@ -305,6 +308,8 @@ void CACHED_CONTAINER::defragment( VERTEX* aTarget )
m_item->setOffset( newOffset );
m_chunkOffset = newOffset;
}
m_maxIndex = usedSpace();
}

3
common/gal/opengl/cached_container_ram.cpp
View File

@ -64,7 +64,7 @@ void CACHED_CONTAINER_RAM::Unmap()
// Upload vertices coordinates and shader types to GPU memory
glBindBuffer( GL_ARRAY_BUFFER, m_verticesBuffer );
checkGlError( "binding vertices buffer" );
glBufferData( GL_ARRAY_BUFFER, usedSpace() * VERTEX_SIZE, m_vertices, GL_STREAM_DRAW );
glBufferData( GL_ARRAY_BUFFER, m_maxIndex * VERTEX_SIZE, m_vertices, GL_STREAM_DRAW );
checkGlError( "transferring vertices" );
glBindBuffer( GL_ARRAY_BUFFER, 0 );
checkGlError( "unbinding vertices buffer" );
@ -110,6 +110,7 @@ bool CACHED_CONTAINER_RAM::defragmentResize( unsigned int aNewSize )
// Now there is only one big chunk of free memory
m_freeChunks.clear();
m_freeChunks.insert( std::make_pair( m_freeSpace, m_currentSize - m_freeSpace ) );
m_dirty = true;
return true;
}

3
include/gal/opengl/cached_container.h
View File

@ -103,6 +103,9 @@ protected:
unsigned int m_chunkSize;
unsigned int m_chunkOffset;
///> Maximal vertex index number stored in the container
unsigned int m_maxIndex;
/**
* Resizes the chunk that stores the current item to the given size. The current item has
* its offset adjusted after the call, and the new chunk parameters are stored