/*!***************************************************************************
@Function PVRTTextureTile
@Modified pOut The tiled texture in system memory
@Input pIn The source texture
@Input nRepeatCnt Number of times to repeat the source texture
@Description Allocates and fills, in system memory, a texture large enough
to repeat the source texture specified number of times.
*****************************************************************************/
void PVRTTextureTile(
PVRTextureHeaderV3 **pOut,
const PVRTextureHeaderV3 * const pIn,
const int nRepeatCnt)
{
unsigned int nFormat = 0, nType = 0, nBPP, nSize, nElW = 0, nElH = 0, nElD = 0;
PVRTuint8 *pMmSrc, *pMmDst;
unsigned int nLevel;
PVRTextureHeaderV3 *psTexHeaderNew;
_ASSERT(pIn->u32Width);
_ASSERT(pIn->u32Width == pIn->u32Height);
_ASSERT(nRepeatCnt > 1);
PVRTGetOGLES3TextureFormat(*pIn,nFormat,nFormat,nType);
PVRTGetFormatMinDims(pIn->u64PixelFormat,nElW,nElH,nElD);
nBPP = PVRTGetBitsPerPixel(pIn->u64PixelFormat);
nSize = pIn->u32Width * nRepeatCnt;
psTexHeaderNew = PVRTTextureCreate(nSize, nSize, nElW, nElH, nBPP, true);
*psTexHeaderNew = *pIn;
pMmDst = (PVRTuint8*)psTexHeaderNew + sizeof(*psTexHeaderNew);
pMmSrc = (PVRTuint8*)pIn + sizeof(*pIn);
for(nLevel = 0; ((unsigned int)1 << nLevel) < nSize; ++nLevel)
{
int nBlocksDstW = PVRT_MAX((unsigned int)1, (nSize >> nLevel) / nElW);
int nBlocksDstH = PVRT_MAX((unsigned int)1, (nSize >> nLevel) / nElH);
int nBlocksSrcW = PVRT_MAX((unsigned int)1, (pIn->u32Width >> nLevel) / nElW);
int nBlocksSrcH = PVRT_MAX((unsigned int)1, (pIn->u32Height >> nLevel) / nElH);
int nBlocksS = nBPP * nElW * nElH / 8;
PVRTTextureLoadTiled(
pMmDst,
nBlocksDstW,
nBlocksDstH,
pMmSrc,
nBlocksSrcW,
nBlocksSrcH,
nBlocksS,
(pIn->u64PixelFormat>=ePVRTPF_PVRTCI_2bpp_RGB && pIn->u64PixelFormat<=ePVRTPF_PVRTCI_4bpp_RGBA) ? true : false);
pMmDst += nBlocksDstW * nBlocksDstH * nBlocksS;
pMmSrc += nBlocksSrcW * nBlocksSrcH * nBlocksS;
}
psTexHeaderNew->u32Width = nSize;
psTexHeaderNew->u32Height = nSize;
psTexHeaderNew->u32MIPMapCount = nLevel+1;
*pOut = psTexHeaderNew;
}
/*!***************************************************************************
@Function PVRTTextureTile
@Modified pOut The tiled texture in system memory
@Input pIn The source texture
@Input nRepeatCnt Number of times to repeat the source texture
@Description Allocates and fills, in system memory, a texture large enough
to repeat the source texture specified number of times.
*****************************************************************************/
void PVRTTextureTile(
PVR_Texture_Header **pOut,
const PVR_Texture_Header * const pIn,
const int nRepeatCnt)
{
unsigned int nFormat = 0, nType = 0, nBPP, nSize, nElW = 0, nElH = 0;
PVRTuint8 *pMmSrc, *pMmDst;
unsigned int nLevel;
PVR_Texture_Header *psTexHeaderNew;
_ASSERT(pIn->dwWidth);
_ASSERT(pIn->dwWidth == pIn->dwHeight);
_ASSERT(nRepeatCnt > 1);
switch(pIn->dwpfFlags & PVRTEX_PIXELTYPE)
{
case OGL_RGBA_5551:
nFormat = GL_UNSIGNED_SHORT_5_5_5_1;
nType = GL_RGBA;
nElW = 1;
nElH = 1;
break;
case OGL_RGBA_8888:
nFormat = GL_UNSIGNED_BYTE;
nType = GL_RGBA;
nElW = 1;
nElH = 1;
break;
case OGL_PVRTC2:
nFormat = GL_COMPRESSED_RGB_PVRTC_2BPPV1_IMG;
nType = 0;
nElW = 8;
nElH = 4;
break;
case OGL_PVRTC4:
nFormat = GL_COMPRESSED_RGB_PVRTC_4BPPV1_IMG;
nType = 0;
nElW = 4;
nElH = 4;
break;
}
nBPP = PVRTTextureFormatGetBPP(nFormat, nType);
nSize = pIn->dwWidth * nRepeatCnt;
psTexHeaderNew = PVRTTextureCreate(nSize, nSize, nElW, nElH, nBPP, true);
*psTexHeaderNew = *pIn;
pMmDst = (PVRTuint8*)psTexHeaderNew + sizeof(*psTexHeaderNew);
pMmSrc = (PVRTuint8*)pIn + sizeof(*pIn);
for(nLevel = 0; ((unsigned int)1 << nLevel) < nSize; ++nLevel)
{
int nBlocksDstW = PVRT_MAX((unsigned int)1, (nSize >> nLevel) / nElW);
int nBlocksDstH = PVRT_MAX((unsigned int)1, (nSize >> nLevel) / nElH);
int nBlocksSrcW = PVRT_MAX((unsigned int)1, (pIn->dwWidth >> nLevel) / nElW);
int nBlocksSrcH = PVRT_MAX((unsigned int)1, (pIn->dwHeight >> nLevel) / nElH);
int nBlocksS = nBPP * nElW * nElH / 8;
PVRTTextureLoadTiled(
pMmDst,
nBlocksDstW,
nBlocksDstH,
pMmSrc,
nBlocksSrcW,
nBlocksSrcH,
nBlocksS,
(pIn->dwpfFlags & PVRTEX_TWIDDLE) ? true : false);
pMmDst += nBlocksDstW * nBlocksDstH * nBlocksS;
pMmSrc += nBlocksSrcW * nBlocksSrcH * nBlocksS;
}
psTexHeaderNew->dwWidth = nSize;
psTexHeaderNew->dwHeight = nSize;
psTexHeaderNew->dwMipMapCount = nLevel;
*pOut = psTexHeaderNew;
}
