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Utility/PixelFormat: Add ComputeSize method 

Former-commit-id: 8d9017541a812c98ba96c694cbd10da895338d1d
This commit is contained in:
Lynix 2016-04-21 13:21:39 +02:00
parent d6112c99f4
commit e5f5d7ed11
4 changed files with 44 additions and 12 deletions
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2
include/Nazara/Utility/Image.hpp
View File

@ -131,7 +131,7 @@ namespace Nz
Image& operator=(const Image& image);
static void Copy(UInt8* destination, const UInt8* source, UInt8 bpp, unsigned int width, unsigned int height, unsigned int depth = 1, unsigned int dstWidth = 0, unsigned int dstHeight = 0, unsigned int srcWidth = 0, unsigned int srcHeight = 0);
static void Copy(UInt8* destination, const UInt8* source, PixelFormatType format, unsigned int width, unsigned int height, unsigned int depth = 1, unsigned int dstWidth = 0, unsigned int dstHeight = 0, unsigned int srcWidth = 0, unsigned int srcHeight = 0);
static UInt8 GetMaxLevel(unsigned int width, unsigned int height, unsigned int depth = 1);
static UInt8 GetMaxLevel(ImageType type, unsigned int width, unsigned int height, unsigned int depth = 1);
template<typename... Args> static ImageRef New(Args&&... args);

2
include/Nazara/Utility/PixelFormat.hpp
View File

@ -28,6 +28,8 @@ namespace Nz
using ConvertFunction = std::function<UInt8*(const UInt8* start, const UInt8* end, UInt8* dst)>;
using FlipFunction = std::function<void(unsigned int width, unsigned int height, unsigned int depth, const UInt8* src, UInt8* dst)>;
static inline std::size_t ComputeSize(PixelFormatType format, unsigned int width, unsigned int height, unsigned int depth);
static bool Convert(PixelFormatType srcFormat, PixelFormatType dstFormat, const void* src, void* dst);
static bool Convert(PixelFormatType srcFormat, PixelFormatType dstFormat, const void* start, const void* end, void* dst);

20
include/Nazara/Utility/PixelFormat.inl
View File

@ -9,6 +9,26 @@
namespace Nz
{
inline std::size_t PixelFormat::ComputeSize(PixelFormatType format, unsigned int width, unsigned int height, unsigned int depth)
{
if (IsCompressed(format))
{
switch (format)
{
case PixelFormatType_DXT1:
case PixelFormatType_DXT3:
case PixelFormatType_DXT5:
return (((width + 3) / 4) * ((height + 3) / 4) * (format == PixelFormatType_DXT1) ? 8 : 16) * depth;
default:
NazaraError("Unsupported format");
return 0;
}
}
else
return width * height * depth * GetBytesPerPixel(format);
}
inline bool PixelFormat::Convert(PixelFormatType srcFormat, PixelFormatType dstFormat, const void* src, void* dst)
{
if (srcFormat == dstFormat)

32
src/Nazara/Utility/Image.cpp
View File

@ -179,7 +179,7 @@ namespace Nz
UInt8 bpp = PixelFormat::GetBytesPerPixel(m_sharedImage->format);
UInt8* dstPtr = GetPixelPtr(m_sharedImage->levels[0].get(), bpp, dstPos.x, dstPos.y, dstPos.z, m_sharedImage->width, m_sharedImage->height);
Copy(dstPtr, srcPtr, bpp, srcBox.width, srcBox.height, srcBox.depth, m_sharedImage->width, m_sharedImage->height, source.GetWidth(), source.GetHeight());
Copy(dstPtr, srcPtr, m_sharedImage->format, srcBox.width, srcBox.height, srcBox.depth, m_sharedImage->width, m_sharedImage->height, source.GetWidth(), source.GetHeight());
}
bool Image::Create(ImageType type, PixelFormatType format, unsigned int width, unsigned int height, unsigned int depth, UInt8 levelCount)
@ -273,7 +273,7 @@ namespace Nz
// Cette allocation est protégée car sa taille dépend directement de paramètres utilisateurs
try
{
levels[i].reset(new UInt8[w * h * d * PixelFormat::GetBytesPerPixel(format)]);
levels[i].reset(new UInt8[PixelFormat::ComputeSize(format, w, h, d)]);
if (w > 1)
w >>= 1;
@ -341,7 +341,7 @@ namespace Nz
for (unsigned int i = 0; i < levels.size(); ++i)
{
unsigned int size = width*height*depth*bpp;
std::size_t size = PixelFormat::ComputeSize(m_sharedImage->format, width, height, depth);
levels[i].reset(new UInt8[size]);
UInt8* ptr = levels[i].get();
@ -380,6 +380,12 @@ namespace Nz
return false;
}
if (PixelFormat::IsCompressed(m_sharedImage->format))
{
NazaraError("Cannot access pixels from compressed image");
return false;
}
if (!box.IsValid())
{
NazaraError("Invalid rectangle");
@ -439,6 +445,12 @@ namespace Nz
return false;
}
if (PixelFormat::IsCompressed(m_sharedImage->format))
{
NazaraError("Cannot access pixels from compressed image");
return false;
}
if (!rect.IsValid())
{
NazaraError("Invalid rectangle");
@ -683,10 +695,7 @@ namespace Nz
unsigned int Image::GetMemoryUsage(UInt8 level) const
{
return (GetLevelSize(m_sharedImage->width, level)) *
(GetLevelSize(m_sharedImage->height, level)) *
((m_sharedImage->type == ImageType_Cubemap) ? 6 : GetLevelSize(m_sharedImage->depth, level)) *
PixelFormat::GetBytesPerPixel(m_sharedImage->format);
return PixelFormat::ComputeSize(m_sharedImage->format, GetLevelSize(m_sharedImage->width, level), GetLevelSize(m_sharedImage->height, level), ((m_sharedImage->type == ImageType_Cubemap) ? 6 : GetLevelSize(m_sharedImage->depth, level)));
}
Color Image::GetPixelColor(unsigned int x, unsigned int y, unsigned int z) const
@ -1261,7 +1270,7 @@ namespace Nz
EnsureOwnership();
Copy(m_sharedImage->levels[level].get(), pixels, PixelFormat::GetBytesPerPixel(m_sharedImage->format),
Copy(m_sharedImage->levels[level].get(), pixels, m_sharedImage->format,
GetLevelSize(m_sharedImage->width, level),
GetLevelSize(m_sharedImage->height, level),
GetLevelSize(m_sharedImage->depth, level),
@ -1317,7 +1326,7 @@ namespace Nz
UInt8 bpp = PixelFormat::GetBytesPerPixel(m_sharedImage->format);
UInt8* dstPixels = GetPixelPtr(m_sharedImage->levels[level].get(), bpp, box.x, box.y, box.z, width, height);
Copy(dstPixels, pixels, bpp,
Copy(dstPixels, pixels, m_sharedImage->format,
box.width, box.height, box.depth,
width, height,
srcWidth, srcHeight);
@ -1341,7 +1350,7 @@ namespace Nz
return *this;
}
void Image::Copy(UInt8* destination, const UInt8* source, UInt8 bpp, unsigned int width, unsigned int height, unsigned int depth, unsigned int dstWidth, unsigned int dstHeight, unsigned int srcWidth, unsigned int srcHeight)
void Image::Copy(UInt8* destination, const UInt8* source, PixelFormatType format, unsigned int width, unsigned int height, unsigned int depth, unsigned int dstWidth, unsigned int dstHeight, unsigned int srcWidth, unsigned int srcHeight)
{
if (dstWidth == 0)
dstWidth = width;
@ -1356,9 +1365,10 @@ namespace Nz
srcHeight = height;
if ((height == 1 || (dstWidth == width && srcWidth == width)) && (depth == 1 || (dstHeight == height && srcHeight == height)))
std::memcpy(destination, source, width*height*depth*bpp);
std::memcpy(destination, source, PixelFormat::ComputeSize(format, width, height, depth));
else
{
unsigned int bpp = PixelFormat::GetBytesPerPixel(format);
unsigned int lineStride = width * bpp;
unsigned int dstLineStride = dstWidth * bpp;
unsigned int dstFaceStride = dstLineStride * dstHeight;