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#include "UnityPrefix.h"
#include "CubemapTexture.h"
#include "Runtime/Graphics/CubemapProcessor.h"
#include "Runtime/Graphics/Image.h"
#include "Runtime/Shaders/GraphicsCaps.h"
#include "Runtime/Utilities/BitUtility.h"
#include "Runtime/GfxDevice/GfxDevice.h"
#include "Runtime/Serialize/TransferFunctions/SerializeTransfer.h"
using namespace std;
Cubemap::Cubemap (MemLabelId label, ObjectCreationMode mode)
: Super (label, mode)
{
m_SourceTextures.resize (6);
}
Cubemap::~Cubemap ()
{
}
bool Cubemap::InitTexture (int width, int height, TextureFormat format, int flags, int imageCount)
{
Assert (imageCount == 6);
Assert (width == height);
if( !IsPowerOfTwo (width) || !IsPowerOfTwo (height) )
{
ErrorStringObject ("Texture has non-power of two size", this);
return false;
}
if( width != height )
{
ErrorStringObject ("Cubemap faces must be square", this);
return false;
}
SetDirty();
return Super::InitTexture (width, width, format, flags, 6);
}
void Cubemap::UploadTexture (bool dontUseSubImage)
{
Assert (GetRawImageData());
ErrorIf (GetGLWidth() != GetGLHeight() || m_ImageCount != 6);
int faceDataSize = GetRawImageData(1)-GetRawImageData(0);
int dataSize = faceDataSize * 6;
UInt32 uploadFlags = (dontUseSubImage || !m_TextureUploaded) ? GfxDevice::kUploadTextureDontUseSubImage : GfxDevice::kUploadTextureDefault;
GetGfxDevice().UploadTextureCube( GetTextureID(), GetRawImageData(), dataSize, faceDataSize, GetGLWidth(), GetTextureFormat(), CountMipmaps(), uploadFlags, GetActiveTextureColorSpace() );
Texture::s_TextureIDMap.insert (std::make_pair(GetTextureID(),this));
m_TextureSettings.m_WrapMode = kTexWrapClamp;
ApplySettings();
m_TextureUploaded = true;
#if !UNITY_EDITOR
if(!m_IsReadable)
{
DeallocateTextureData (m_TexData.data);
m_TexData.data = 0;
m_TexData.imageSize = 0;
}
#endif
}
static void ConvertImageToFloatArray (float* dst, ImageReference const& src)
{
ColorRGBAf* dstRGBA = (ColorRGBAf*)dst;
const int width = src.GetWidth ();
const int height = src.GetHeight ();
for (int y = 0; y < width; ++y)
for (int x = 0; x < height; ++x)
{
*dstRGBA++ = GetImagePixel (src.GetImageData (), width, height, src.GetFormat (), kTexWrapClamp, x, y);
}
}
static void ConvertFloatArrayToImage (ImageReference& dst, float const* src)
{
ColorRGBAf const* srcRGBA = (ColorRGBAf const*)src;
const int width = dst.GetWidth ();
const int height = dst.GetHeight ();
for (int y = 0; y < width; ++y)
for (int x = 0; x < height; ++x)
{
SetImagePixel (dst, x, y, kTexWrapClamp, *srcRGBA++);
}
}
void Cubemap::RebuildMipMap ()
{
TextureRepresentation& rep = m_TexData;
if (rep.data == NULL || !m_MipMap)
return;
if (IsAnyCompressedTextureFormat(rep.format))
{
ErrorStringObject ("Rebuilding mipmaps of compressed textures is not supported", this);
return;
}
if (m_ImageCount != 6)
{
ErrorStringObject ("Cubemap must have 6 faces", this);
return;
}
Assert (rep.width == rep.height);
const int edge = rep.width;
for (int i = 0; i < 6; i++)
CreateMipMap (rep.data + rep.imageSize * i, edge, edge, 1, rep.format);
}
void Cubemap::FixupEdges (int fixupWidthInPixels)
{
TextureRepresentation& rep = m_TexData;
if (rep.data == NULL || !m_MipMap)
return;
const int edge = rep.width;
const int channels = 4; CImageSurface cubemapSurfaces[6];
for (int q = 0; q < 6; ++q)
{
cubemapSurfaces[q].m_ImgData = (float*)UNITY_MALLOC (kMemDefault, edge * edge * channels * sizeof(CP_ITYPE));
}
int mipEdge = edge;
for (int mip = 0; mip < CountMipmaps (); ++mip)
{
ImageReference mipImages[6];
for (int face = 0; face < 6; ++face)
{
if (!GetWriteImageReference (&mipImages[face], face, mip))
{
ErrorStringObject ("Can't draw into cubemap", this);
return;
}
ConvertImageToFloatArray (cubemapSurfaces[face].m_ImgData, mipImages[face]);
cubemapSurfaces[face].m_Width = cubemapSurfaces[face].m_Height = mipEdge;
cubemapSurfaces[face].m_NumChannels = channels;
}
FixupCubeEdges (cubemapSurfaces, CP_FIXUP_AVERAGE_HERMITE, fixupWidthInPixels);
for (int face = 0; face < 6; ++face)
{
ConvertFloatArrayToImage (mipImages[face], cubemapSurfaces[face].m_ImgData);
}
mipEdge = max(mipEdge/2, 1);
}
for (int q = 0; q < 6; ++q)
{
UNITY_FREE (kMemDefault, cubemapSurfaces[q].m_ImgData);
}
}
void Cubemap::SetSourceTexture (CubemapFace face, PPtr<Texture2D> tex)
{
Assert (face < m_SourceTextures.size ());
m_SourceTextures[face] = tex;
}
PPtr<Texture2D> Cubemap::GetSourceTexture (CubemapFace face) const
{
Assert (face < m_SourceTextures.size ());
return m_SourceTextures[face];
}
template<class TransferFunction>
void Cubemap::Transfer (TransferFunction& transfer)
{
Super::Transfer (transfer);
transfer.Transfer (m_SourceTextures, "m_SourceTextures");
transfer.Align ();
}
IMPLEMENT_CLASS (Cubemap)
IMPLEMENT_OBJECT_SERIALIZE (Cubemap)
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