/// @copydoc ResourceHandler::CacheResource()
bool FontResourceHandler::CacheResource(
ObjectPreprocessor* pObjectPreprocessor,
Resource* pResource,
const String& rSourceFilePath )
{
HELIUM_ASSERT( pObjectPreprocessor );
HELIUM_ASSERT( pResource );
Font* pFont = Reflect::AssertCast< Font >( pResource );
// Load the font into memory ourselves in order to make sure we properly support Unicode file names.
FileStream* pFileStream = File::Open( rSourceFilePath, FileStream::MODE_READ );
if( !pFileStream )
{
HELIUM_TRACE(
TRACE_ERROR,
TXT( "FontResourceHandler: Source file for font resource \"%s\" failed to open properly.\n" ),
*rSourceFilePath );
return false;
}
uint64_t fileSize64 = static_cast< uint64_t >( pFileStream->GetSize() );
if( fileSize64 > SIZE_MAX )
{
HELIUM_TRACE(
TRACE_ERROR,
( TXT( "FontResourceHandler: Font file \"%s\" exceeds the maximum addressable size of data in memory for " )
TXT( "this platform and will not be cached.\n" ) ),
*rSourceFilePath );
delete pFileStream;
return false;
}
size_t fileSize = static_cast< size_t >( fileSize64 );
uint8_t* pFileData = new uint8_t [ fileSize ];
if( !pFileData )
{
HELIUM_TRACE(
TRACE_ERROR,
( TXT( "FontResourceHandler: Failed to allocate %" ) TPRIuSZ TXT( " bytes for resource data for font " )
TXT( "\"%s\".\n" ) ),
fileSize,
*rSourceFilePath );
delete pFileStream;
return false;
}
size_t bytesRead = pFileStream->Read( pFileData, 1, fileSize );
delete pFileStream;
if( bytesRead != fileSize )
{
HELIUM_TRACE(
TRACE_WARNING,
( TXT( "FontResourceHandler: Attempted to read %" ) TPRIuSZ TXT( " bytes from font resource file \"%s\", " )
TXT( "but only %" ) TPRIuSZ TXT( " bytes were read successfully.\n" ) ),
fileSize,
*rSourceFilePath,
bytesRead );
}
// Create the font face.
FT_Library pLibrary = GetStaticLibrary();
HELIUM_ASSERT( pLibrary );
FT_Face pFace = NULL;
FT_Error error = FT_New_Memory_Face( pLibrary, pFileData, static_cast< FT_Long >( bytesRead ), 0, &pFace );
if( error != 0 )
{
HELIUM_TRACE(
TRACE_ERROR,
TXT( "FontResourceHandler: Failed to create font face from resource file \"%s\".\n" ),
*rSourceFilePath );
delete [] pFileData;
return false;
}
// Set the appropriate font size.
int32_t pointSize = Font::Float32ToFixed26x6( pFont->GetPointSize() );
uint32_t dpi = pFont->GetDpi();
error = FT_Set_Char_Size( pFace, pointSize, pointSize, dpi, dpi );
if( error != 0 )
{
HELIUM_TRACE(
TRACE_ERROR,
TXT( "FontResourceHandler: Failed to set size of font resource \"%s\".\n" ),
*rSourceFilePath );
FT_Done_Face( pFace );
delete [] pFileData;
return false;
}
// Get the general font size information.
FT_Size pSize = pFace->size;
HELIUM_ASSERT( pSize );
int32_t ascender = pSize->metrics.ascender;
int32_t descender = pSize->metrics.descender;
int32_t height = pSize->metrics.height;
int32_t maxAdvance = pSize->metrics.max_advance;
// Make sure that all characters in the font will fit on a single texture sheet (note that we also need at least a
// pixel on each side in order to pad each glyph).
uint16_t textureSheetWidth = Max< uint16_t >( pFont->GetTextureSheetWidth(), 1 );
uint16_t textureSheetHeight = Max< uint16_t >( pFont->GetTextureSheetHeight(), 1 );
int32_t integerHeight = ( height + ( 1 << 6 ) - 1 ) >> 6;
if( integerHeight + 2 > textureSheetHeight )
{
HELIUM_TRACE(
TRACE_ERROR,
( TXT( "FontResourceHandler: Font height (%" ) TPRId32 TXT( ") exceeds the texture sheet height (%" )
TPRIu16 TXT( ") for font resource \"%s\".\n" ) ),
integerHeight,
textureSheetHeight,
*pResource->GetPath().ToString() );
FT_Done_Face( pFace );
delete [] pFileData;
return false;
}
int32_t integerMaxAdvance = ( maxAdvance + ( 1 << 6 ) - 1 ) >> 6;
if( integerMaxAdvance + 2 > textureSheetWidth )
{
HELIUM_TRACE(
TRACE_ERROR,
( TXT( "FontResourceHandler: Maximum character advance (%" ) TPRId32 TXT( ") exceeds the texture sheet " )
TXT( "width (%" ) TPRIu16 TXT( ") for font resource \"%s\".\n" ) ),
integerMaxAdvance,
textureSheetWidth,
*pResource->GetPath().ToString() );
FT_Done_Face( pFace );
delete [] pFileData;
return false;
}
// Allocate a buffer for building our texture sheets.
uint_fast32_t texturePixelCount =
static_cast< uint_fast32_t >( textureSheetWidth ) * static_cast< uint_fast32_t >( textureSheetHeight );
uint8_t* pTextureBuffer = new uint8_t [ texturePixelCount ];
HELIUM_ASSERT( pTextureBuffer );
if( !pTextureBuffer )
{
HELIUM_TRACE(
TRACE_ERROR,
( TXT( "FontResourceHandler: Failed to allocate %" ) TPRIuFAST32 TXT( " bytes for texture resource " )
TXT( "buffer data while caching font resource \"%s\".\n" ) ),
texturePixelCount,
*pResource->GetPath().ToString() );
FT_Done_Face( pFace );
delete [] pFileData;
return false;
}
MemoryZero( pTextureBuffer, texturePixelCount );
// Build the texture sheets for our glyphs.
Font::ECompression textureCompression = pFont->GetTextureCompression();
bool bAntialiased = pFont->GetAntialiased();
DynArray< DynArray< uint8_t > > textureSheets;
DynArray< Font::Character > characters;
uint16_t penX = 1;
uint16_t penY = 1;
uint16_t lineHeight = 0;
FT_Int32 glyphLoadFlags = FT_LOAD_RENDER;
if( !bAntialiased )
{
glyphLoadFlags |= FT_LOAD_TARGET_MONO;
}
for( uint_fast32_t codePoint = 0; codePoint <= UNICODE_CODE_POINT_MAX; ++codePoint )
{
// Check whether the current code point is contained within the font.
FT_UInt characterIndex = FT_Get_Char_Index( pFace, static_cast< FT_ULong >( codePoint ) );
if( characterIndex == 0 )
{
continue;
}
// Load and render the glyph for the current character.
HELIUM_VERIFY( FT_Load_Glyph( pFace, characterIndex, glyphLoadFlags ) == 0 );
FT_GlyphSlot pGlyph = pFace->glyph;
HELIUM_ASSERT( pGlyph );
// Proceed to the next line in the texture sheet or the next sheet itself if we don't have enough room in the
// current line/sheet.
HELIUM_ASSERT( pGlyph->bitmap.rows >= 0 );
HELIUM_ASSERT( pGlyph->bitmap.width >= 0 );
uint_fast32_t glyphRowCount = static_cast< uint32_t >( pGlyph->bitmap.rows );
uint_fast32_t glyphWidth = static_cast< uint32_t >( pGlyph->bitmap.width );
if( penX + glyphWidth + 1 >= textureSheetWidth )
{
penX = 1;
if( penY + glyphRowCount + 1 >= textureSheetHeight )
{
CompressTexture(
pTextureBuffer,
textureSheetWidth,
textureSheetHeight,
textureCompression,
textureSheets );
MemoryZero( pTextureBuffer, texturePixelCount );
penY = 1;
}
else
{
penY += lineHeight + 1;
}
lineHeight = 0;
}
// Copy the character data from the glyph bitmap to the texture sheet.
int_fast32_t glyphPitch = pGlyph->bitmap.pitch;
const uint8_t* pGlyphBuffer = pGlyph->bitmap.buffer;
HELIUM_ASSERT( pGlyphBuffer || glyphRowCount == 0 );
uint8_t* pTexturePixel =
pTextureBuffer + static_cast< size_t >( penY ) * static_cast< size_t >( textureSheetWidth ) + penX;
if( bAntialiased )
{
// Anti-aliased fonts are rendered as 8-bit grayscale images, so just copy the data as-is.
for( uint_fast32_t rowIndex = 0; rowIndex < glyphRowCount; ++rowIndex )
{
MemoryCopy( pTexturePixel, pGlyphBuffer, glyphWidth );
pGlyphBuffer += glyphPitch;
pTexturePixel += textureSheetWidth;
}
}
else
{
// Fonts without anti-aliasing are rendered as 1-bit monochrome images, so we need to manually convert each
// row to 8-bit grayscale.
for( uint_fast32_t rowIndex = 0; rowIndex < glyphRowCount; ++rowIndex )
{
const uint8_t* pGlyphPixelBlock = pGlyphBuffer;
pGlyphBuffer += glyphPitch;
uint8_t* pCurrentTexturePixel = pTexturePixel;
pTexturePixel += textureSheetWidth;
uint_fast32_t remainingPixelCount = glyphWidth;
while( remainingPixelCount >= 8 )
{
remainingPixelCount -= 8;
uint8_t pixelBlock = *pGlyphPixelBlock;
++pGlyphPixelBlock;
*( pCurrentTexturePixel++ ) = ( ( pixelBlock & ( 1 << 7 ) ) ? 255 : 0 );
*( pCurrentTexturePixel++ ) = ( ( pixelBlock & ( 1 << 6 ) ) ? 255 : 0 );
*( pCurrentTexturePixel++ ) = ( ( pixelBlock & ( 1 << 5 ) ) ? 255 : 0 );
*( pCurrentTexturePixel++ ) = ( ( pixelBlock & ( 1 << 4 ) ) ? 255 : 0 );
*( pCurrentTexturePixel++ ) = ( ( pixelBlock & ( 1 << 3 ) ) ? 255 : 0 );
*( pCurrentTexturePixel++ ) = ( ( pixelBlock & ( 1 << 2 ) ) ? 255 : 0 );
*( pCurrentTexturePixel++ ) = ( ( pixelBlock & ( 1 << 1 ) ) ? 255 : 0 );
*( pCurrentTexturePixel++ ) = ( ( pixelBlock & ( 1 << 0 ) ) ? 255 : 0 );
}
uint8_t pixelBlock = *pGlyphPixelBlock;
uint8_t mask = ( 1 << 7 );
while( remainingPixelCount != 0 )
{
*( pCurrentTexturePixel++ ) = ( ( pixelBlock & mask ) ? 255 : 0 );
mask >>= 1;
--remainingPixelCount;
}
}
}
// Store the character information in our character array.
Font::Character* pCharacter = characters.New();
HELIUM_ASSERT( pCharacter );
pCharacter->codePoint = static_cast< uint32_t >( codePoint );
pCharacter->imageX = penX;
pCharacter->imageY = penY;
pCharacter->imageWidth = static_cast< uint16_t >( glyphWidth );
pCharacter->imageHeight = static_cast< uint16_t >( glyphRowCount );
pCharacter->width = pGlyph->metrics.width;
pCharacter->height = pGlyph->metrics.height;
pCharacter->bearingX = pGlyph->metrics.horiBearingX;
pCharacter->bearingY = pGlyph->metrics.horiBearingY;
pCharacter->advance = pGlyph->metrics.horiAdvance;
HELIUM_ASSERT( textureSheets.GetSize() < UINT8_MAX );
pCharacter->texture = static_cast< uint8_t >( static_cast< uint8_t >( textureSheets.GetSize() ) );
// Update the pen location as well as the maximum line height as appropriate based on the current line height.
penX += static_cast< uint16_t >( glyphWidth ) + 1;
HELIUM_ASSERT( glyphRowCount <= UINT16_MAX );
lineHeight = Max< uint16_t >( lineHeight, static_cast< uint16_t >( glyphRowCount ) );
}
// Compress and store the last texture in the sheet.
if( !characters.IsEmpty() )
{
CompressTexture( pTextureBuffer, textureSheetWidth, textureSheetHeight, textureCompression, textureSheets );
}
// Done processing the font itself, so free some resources.
delete [] pTextureBuffer;
FT_Done_Face( pFace );
delete [] pFileData;
// Cache the font data.
size_t characterCountActual = characters.GetSize();
HELIUM_ASSERT( characterCountActual <= UINT32_MAX );
uint32_t characterCount = static_cast< uint32_t >( characterCountActual );
size_t textureCountActual = textureSheets.GetSize();
HELIUM_ASSERT( textureCountActual < UINT8_MAX );
uint8_t textureCount = static_cast< uint8_t >( textureCountActual );
BinarySerializer persistentDataSerializer;
for( size_t platformIndex = 0; platformIndex < static_cast< size_t >( Cache::PLATFORM_MAX ); ++platformIndex )
{
PlatformPreprocessor* pPreprocessor = pObjectPreprocessor->GetPlatformPreprocessor(
static_cast< Cache::EPlatform >( platformIndex ) );
if( !pPreprocessor )
{
continue;
}
persistentDataSerializer.SetByteSwapping( pPreprocessor->SwapBytes() );
persistentDataSerializer.BeginSerialize();
persistentDataSerializer << ascender;
persistentDataSerializer << descender;
persistentDataSerializer << height;
persistentDataSerializer << maxAdvance;
persistentDataSerializer << characterCount;
persistentDataSerializer << textureCount;
for( size_t characterIndex = 0; characterIndex < characterCountActual; ++characterIndex )
{
characters[ characterIndex ].Serialize( persistentDataSerializer );
}
persistentDataSerializer.EndSerialize();
Resource::PreprocessedData& rPreprocessedData = pResource->GetPreprocessedData(
static_cast< Cache::EPlatform >( platformIndex ) );
rPreprocessedData.persistentDataBuffer = persistentDataSerializer.GetPropertyStreamBuffer();
rPreprocessedData.subDataBuffers = textureSheets;
rPreprocessedData.bLoaded = true;
}
return true;
}
/// @copydoc ResourceHandler::CacheResource()
bool MeshResourceHandler::CacheResource(
ObjectPreprocessor* pObjectPreprocessor,
Resource* pResource,
const String& rSourceFilePath )
{
HELIUM_ASSERT( pObjectPreprocessor );
HELIUM_ASSERT( pResource );
// Load and parse the mesh data.
DynArray< StaticMeshVertex< 1 > > vertices;
DynArray< uint16_t > indices;
DynArray< uint16_t > sectionVertexCounts;
DynArray< uint32_t > sectionTriangleCounts;
DynArray< FbxSupport::BoneData > bones;
DynArray< FbxSupport::BlendData > vertexBlendData;
DynArray< uint8_t > skinningPaletteMap;
bool bLoadSuccess = m_rFbxSupport.LoadMesh(
rSourceFilePath,
vertices,
indices,
sectionVertexCounts,
sectionTriangleCounts,
bones,
vertexBlendData,
skinningPaletteMap );
if( !bLoadSuccess )
{
HELIUM_TRACE(
TRACE_ERROR,
TXT( "MeshResourceHandler::CacheResource(): Failed to build mesh from source file \"%s\".\n" ),
*rSourceFilePath );
return false;
}
size_t vertexCountActual = vertices.GetSize();
HELIUM_ASSERT( vertexCountActual <= UINT32_MAX );
uint32_t vertexCount = static_cast< uint32_t >( vertexCountActual );
size_t indexCount = indices.GetSize();
size_t triangleCountActual = indexCount;
HELIUM_ASSERT( triangleCountActual % 3 == 0 );
triangleCountActual /= 3;
HELIUM_ASSERT( triangleCountActual <= UINT32_MAX );
uint32_t triangleCount = static_cast< uint32_t >( triangleCountActual );
size_t boneCountActual = bones.GetSize();
HELIUM_ASSERT( boneCountActual <= UINT8_MAX );
#if !HELIUM_USE_GRANNY_ANIMATION
uint8_t boneCount = static_cast< uint8_t >( boneCountActual );
#endif
// Compute the mesh bounding box.
Simd::AaBox bounds;
if( vertexCountActual != 0 )
{
const float32_t* pPosition = vertices[ 0 ].position;
Simd::Vector3 position( pPosition[ 0 ], pPosition[ 1 ], pPosition[ 2 ] );
bounds.Set( position, position );
for( size_t vertexIndex = 1; vertexIndex < vertexCountActual; ++vertexIndex )
{
pPosition = vertices[ vertexIndex ].position;
bounds.Expand( Simd::Vector3( pPosition[ 0 ], pPosition[ 1 ], pPosition[ 2 ] ) );
}
}
#if HELIUM_USE_GRANNY_ANIMATION
Granny::MeshCachingData grannyMeshCachingData;
grannyMeshCachingData.BuildResourceData( bones );
#endif // HELIUM_USE_GRANNY_ANIMATION
// Cache the data for each supported platform.
BinarySerializer serializer;
for( size_t platformIndex = 0; platformIndex < static_cast< size_t >( Cache::PLATFORM_MAX ); ++platformIndex )
{
PlatformPreprocessor* pPreprocessor = pObjectPreprocessor->GetPlatformPreprocessor(
static_cast< Cache::EPlatform >( platformIndex ) );
if( !pPreprocessor )
{
continue;
}
Resource::PreprocessedData& rPreprocessedData = pResource->GetPreprocessedData(
static_cast< Cache::EPlatform >( platformIndex ) );
DynArray< DynArray< uint8_t > >& rSubDataBuffers = rPreprocessedData.subDataBuffers;
rSubDataBuffers.Reserve( 2 );
rSubDataBuffers.Resize( 2 );
rSubDataBuffers.Trim();
serializer.SetByteSwapping( pPreprocessor->SwapBytes() );
// Serialize the buffer sizes and mesh bounds first.
serializer.BeginSerialize();
serializer << Serializer::WrapDynArray( sectionVertexCounts );
serializer << Serializer::WrapDynArray( sectionTriangleCounts );
serializer << Serializer::WrapDynArray( skinningPaletteMap );
serializer << vertexCount;
serializer << triangleCount;
serializer << bounds;
#if HELIUM_USE_GRANNY_ANIMATION
grannyMeshCachingData.CachePlatformResourceData( pPreprocessor, serializer );
#else
serializer << boneCount;
for( size_t boneIndex = 0; boneIndex < boneCount; ++boneIndex )
{
FbxSupport::BoneData& rBoneData = bones[ boneIndex ];
serializer << rBoneData.name;
serializer << rBoneData.parentIndex;
serializer << rBoneData.referenceTransform;
}
#endif
serializer.EndSerialize();
rPreprocessedData.persistentDataBuffer = serializer.GetPropertyStreamBuffer();
// Serialize the vertex buffer. If the mesh is a skinned mesh, the vertices will need to be converted to
// and serialized as an array of SkinnedMeshVertex structs.
serializer.BeginSerialize();
if( boneCountActual == 0 )
{
for( size_t vertexIndex = 0; vertexIndex < vertexCountActual; ++vertexIndex )
{
vertices[ vertexIndex ].Serialize( serializer );
}
}
else
{
HELIUM_ASSERT( vertexBlendData.GetSize() == vertexCountActual );
SkinnedMeshVertex vertex;
for( size_t vertexIndex = 0; vertexIndex < vertexCountActual; ++vertexIndex )
{
const StaticMeshVertex< 1 >& rStaticVertex = vertices[ vertexIndex ];
const FbxSupport::BlendData& rBlendData = vertexBlendData[ vertexIndex ];
MemoryCopy( vertex.position, rStaticVertex.position, sizeof( vertex.position ) );
vertex.blendWeights[ 0 ] = static_cast< uint8_t >( Clamp(
rBlendData.weights[ 0 ] * 255.0f + 0.5f,
0.0f,
255.0f ) );
vertex.blendWeights[ 1 ] = static_cast< uint8_t >( Clamp(
rBlendData.weights[ 1 ] * 255.0f + 0.5f,
0.0f,
255.0f ) );
vertex.blendWeights[ 2 ] = static_cast< uint8_t >( Clamp(
rBlendData.weights[ 2 ] * 255.0f + 0.5f,
0.0f,
255.0f ) );
vertex.blendWeights[ 3 ] = static_cast< uint8_t >( Clamp(
rBlendData.weights[ 3 ] * 255.0f + 0.5f,
0.0f,
255.0f ) );
// Tweak the blend weights to ensure they still add up to 255 (1.0 when normalized by the GPU).
size_t blendWeightTotal =
static_cast< size_t >( vertex.blendWeights[ 0 ] ) +
static_cast< size_t >( vertex.blendWeights[ 1 ] ) +
static_cast< size_t >( vertex.blendWeights[ 2 ] ) +
static_cast< size_t >( vertex.blendWeights[ 3 ] );
if( blendWeightTotal != 0 && blendWeightTotal != 255 )
{
if( blendWeightTotal > 255 )
{
// Total blend weight is too large, so decrease blend weights, starting from the lowest
// non-zero weight.
size_t weightAdjustIndex = 0;
do
{
do
{
weightAdjustIndex = ( weightAdjustIndex + 3 ) % 4;
} while( vertex.blendWeights[ weightAdjustIndex ] == 0 );
--vertex.blendWeights[ weightAdjustIndex ];
--blendWeightTotal;
} while( blendWeightTotal > 255 );
}
else
{
// Total blend weight is too small, so increase blend weights, starting from the highest
// non-zero blend weight. Note that we should not have to check whether the blend weight is
// already at its max, as that would mean our total blend weight would have to already be at
// least 255.
size_t weightAdjustIndex = 3;
do
{
do
{
weightAdjustIndex = ( weightAdjustIndex + 1 ) % 4;
} while( vertex.blendWeights[ weightAdjustIndex ] == 0 );
HELIUM_ASSERT( vertex.blendWeights[ weightAdjustIndex ] != 255 );
++vertex.blendWeights[ weightAdjustIndex ];
++blendWeightTotal;
} while( blendWeightTotal < 255 );
}
HELIUM_ASSERT( blendWeightTotal == 255 );
}
MemoryCopy( vertex.blendIndices, rBlendData.indices, sizeof( vertex.blendIndices ) );
MemoryCopy( vertex.normal, rStaticVertex.normal, sizeof( vertex.normal ) );
MemoryCopy( vertex.tangent, rStaticVertex.tangent, sizeof( vertex.tangent ) );
MemoryCopy( vertex.texCoords, rStaticVertex.texCoords[ 0 ], sizeof( vertex.texCoords ) );
vertex.Serialize( serializer );
}
}
serializer.EndSerialize();
rSubDataBuffers[ 0 ] = serializer.GetPropertyStreamBuffer();
// Serialize the index buffer.
serializer.BeginSerialize();
for( size_t indexIndex = 0; indexIndex < indexCount; ++indexIndex )
{
serializer << indices[ indexIndex ];
}
serializer.EndSerialize();
rSubDataBuffers[ 1 ] = serializer.GetPropertyStreamBuffer();
// Platform data is now loaded.
rPreprocessedData.bLoaded = true;
}
return true;
}
