/*!***************************************************************************
@Function Print3D
@Input fPosX X Position
@Input fPosY Y Position
@Input fScale Text scale
@Input Colour ARGB colour
@Input UTF32 Array of UTF32 characters
@Input bUpdate Whether to update the vertices
@Return EPVRTError Success of failure
@Description Takes an array of UTF32 characters and generates the required mesh.
*****************************************************************************/
EPVRTError CPVRTPrint3D::Print3D(float fPosX, float fPosY, const float fScale, unsigned int Colour, const CPVRTArray<PVRTuint32>& UTF32, bool bUpdate)
{
// No textures! so... no window
if (!m_bTexturesSet)
{
PVRTErrorOutputDebug("DisplayWindow : You must call CPVRTPrint3D::SetTextures(...) before using this function.\n");
return PVR_FAIL;
}
// nothing to be drawn
if(UTF32.GetSize() == 0)
return PVR_FAIL;
// Adjust input parameters
if(!m_bUsingProjection)
{
fPosX = (float)((int)(fPosX * (640.0f/100.0f)));
fPosY = -(float)((int)(fPosY * (480.0f/100.0f)));
}
// Create Vertex Buffer (only if it doesn't exist)
if(m_pPrint3dVtx == 0)
{
m_pPrint3dVtx = (SPVRTPrint3DAPIVertex*)malloc(MAX_LETTERS*4*sizeof(SPVRTPrint3DAPIVertex));
if(!m_pPrint3dVtx)
return PVR_FAIL;
}
// Fill up our buffer
if(bUpdate)
m_nCachedNumVerts = UpdateLine(0.0f, fPosX, fPosY, fScale, Colour, UTF32, m_pPrint3dVtx);
// Draw the text
if(!DrawLine(m_pPrint3dVtx, m_nCachedNumVerts))
return PVR_FAIL;
return PVR_SUCCESS;
}
/*!***************************************************************************
@Function PVRTTextureLoadFromPointer
@Input pointer Pointer to header-texture's structure
@Modified texName the OpenGL ES texture name as returned by glBindTexture
@Modified psTextureHeader Pointer to a PVRTextureHeaderV3 struct. Modified to
contain the header data of the returned texture Ignored if NULL.
@Input bAllowDecompress Allow decompression if PVRTC is not supported in hardware.
@Input nLoadFromLevel Which mip map level to start loading from (0=all)
@Input texPtr If null, texture follows header, else texture is here.
@Modified pMetaData If a valid map is supplied, this will return any and all
MetaDataBlocks stored in the texture, organised by DevFourCC
then identifier. Supplying NULL will ignore all MetaData.
@Return PVR_SUCCESS on success
@Description Allows textures to be stored in C header files and loaded in. Can load parts of a
mip mapped texture (i.e. skipping the highest detailed levels). In OpenGL Cube Map, each
texture's up direction is defined as next (view direction, up direction),
(+x,-y)(-x,-y)(+y,+z)(-y,-z)(+z,-y)(-z,-y).
Sets the texture MIN/MAG filter to GL_LINEAR_MIPMAP_NEAREST/GL_LINEAR
if mip maps are present, GL_LINEAR/GL_LINEAR otherwise.
*****************************************************************************/
EPVRTError PVRTTextureLoadFromPointer( const void* pointer,
GLuint *const texName,
const void *psTextureHeader,
bool bAllowDecompress,
const unsigned int nLoadFromLevel,
const void * const texPtr,
CPVRTMap<unsigned int, CPVRTMap<unsigned int, MetaDataBlock> > *pMetaData)
{
//Compression bools
bool bIsCompressedFormatSupported=false;
bool bIsCompressedFormat=false;
bool bIsLegacyPVR=false;
bool bUsesTexImage3D=false;
//Texture setup
PVRTextureHeaderV3 sTextureHeader;
PVRTuint8* pTextureData=NULL;
//Just in case header and pointer for decompression.
PVRTextureHeaderV3 sTextureHeaderDecomp;
void* pDecompressedData=NULL;
//Check if it's an old header format
if((*(PVRTuint32*)pointer)!=PVRTEX3_IDENT)
{
//Convert the texture header to the new format.
PVRTConvertOldTextureHeaderToV3((PVR_Texture_Header*)pointer,sTextureHeader,pMetaData);
//Get the texture data.
pTextureData = texPtr? (PVRTuint8*)texPtr:(PVRTuint8*)pointer+*(PVRTuint32*)pointer;
bIsLegacyPVR=true;
}
else
{
//Get the header from the main pointer.
sTextureHeader=*(PVRTextureHeaderV3*)pointer;
//Get the texture data.
pTextureData = texPtr? (PVRTuint8*)texPtr:(PVRTuint8*)pointer+PVRTEX3_HEADERSIZE+sTextureHeader.u32MetaDataSize;
if (pMetaData)
{
//Read in all the meta data.
PVRTuint32 metaDataSize=0;
while (metaDataSize<sTextureHeader.u32MetaDataSize)
{
//Read the DevFourCC and advance the pointer offset.
PVRTuint32 DevFourCC=*(PVRTuint32*)((PVRTuint8*)pointer+PVRTEX3_HEADERSIZE+metaDataSize);
metaDataSize+=sizeof(DevFourCC);
//Read the Key and advance the pointer offset.
PVRTuint32 u32Key=*(PVRTuint32*)((PVRTuint8*)pointer+PVRTEX3_HEADERSIZE+metaDataSize);
metaDataSize+=sizeof(u32Key);
//Read the DataSize and advance the pointer offset.
PVRTuint32 u32DataSize = *(PVRTuint32*)((PVRTuint8*)pointer+PVRTEX3_HEADERSIZE+metaDataSize);
metaDataSize+=sizeof(u32DataSize);
//Get the current meta data.
MetaDataBlock& currentMetaData = (*pMetaData)[DevFourCC][u32Key];
//Assign the values to the meta data.
currentMetaData.DevFOURCC=DevFourCC;
currentMetaData.u32Key=u32Key;
currentMetaData.u32DataSize=u32DataSize;
//Check for data, if there is any, read it into the meta data.
if(u32DataSize > 0)
{
//Allocate memory.
currentMetaData.Data = new PVRTuint8[u32DataSize];
//Copy the data.
memcpy(currentMetaData.Data, ((PVRTuint8*)pointer+PVRTEX3_HEADERSIZE+metaDataSize), u32DataSize);
//Advance the meta data size.
metaDataSize+=u32DataSize;
}
}
}
}
//Return the PVRTextureHeader.
if (psTextureHeader)
{
*(PVRTextureHeaderV3*)psTextureHeader=sTextureHeader;
}
//Setup GL Texture format values.
GLenum eTextureFormat = 0;
GLenum eTextureInternalFormat = 0; // often this is the same as textureFormat, but not for BGRA8888 on iOS, for instance
GLenum eTextureType = 0;
//Get the OGLES format values.
PVRTGetOGLES3TextureFormat(sTextureHeader,eTextureInternalFormat,eTextureFormat,eTextureType);
bool bIsPVRTCSupported = CPVRTgles3Ext::IsGLExtensionSupported("GL_IMG_texture_compression_pvrtc");
#ifndef TARGET_OS_IPHONE
bool bIsBGRA8888Supported = CPVRTgles3Ext::IsGLExtensionSupported("GL_IMG_texture_format_BGRA8888");
#else
bool bIsBGRA8888Supported = CPVRTgles3Ext::IsGLExtensionSupported("GL_APPLE_texture_format_BGRA8888");
#endif
#ifndef TARGET_OS_IPHONE
bool bIsETCSupported = CPVRTgles3Ext::IsGLExtensionSupported("GL_OES_compressed_ETC1_RGB8_texture");
#endif
//Check for compressed formats
if (eTextureFormat==0 && eTextureType==0 && eTextureInternalFormat!=0)
{
if (eTextureInternalFormat>=GL_COMPRESSED_RGB_PVRTC_4BPPV1_IMG && eTextureInternalFormat<=GL_COMPRESSED_RGBA_PVRTC_2BPPV1_IMG)
{
//Check for PVRTCI support.
if(bIsPVRTCSupported)
{
bIsCompressedFormatSupported = bIsCompressedFormat = true;
}
else
{
//Try to decompress the texture.
if(bAllowDecompress)
{
//Output a warning.
PVRTErrorOutputDebug("PVRTTextureLoadFromPointer warning: PVRTC not supported. Converting to RGBA8888 instead.\n");
//Modify boolean values.
bIsCompressedFormatSupported = false;
bIsCompressedFormat = true;
//Check if it's 2bpp.
bool bIs2bppPVRTC = (eTextureInternalFormat==GL_COMPRESSED_RGB_PVRTC_2BPPV1_IMG || eTextureInternalFormat==GL_COMPRESSED_RGBA_PVRTC_2BPPV1_IMG);
//Change texture format.
eTextureFormat = eTextureInternalFormat = GL_RGBA;
eTextureType = GL_UNSIGNED_BYTE;
//Create a near-identical texture header for the decompressed header.
sTextureHeaderDecomp = sTextureHeader;
sTextureHeaderDecomp.u32ChannelType=ePVRTVarTypeUnsignedByteNorm;
sTextureHeaderDecomp.u32ColourSpace=ePVRTCSpacelRGB;
sTextureHeaderDecomp.u64PixelFormat=PVRTGENPIXELID4('r','g','b','a',8,8,8,8);
//Allocate enough memory for the decompressed data. OGLES2, so only decompress one surface/face.
pDecompressedData = malloc(PVRTGetTextureDataSize(sTextureHeaderDecomp, PVRTEX_ALLMIPLEVELS, false, true) );
//Check the malloc.
if (!pDecompressedData)
{
PVRTErrorOutputDebug("PVRTTextureLoadFromPointer error: Unable to allocate memory to decompress texture.\n");
return PVR_FAIL;
}
//Get the dimensions for the current MIP level.
PVRTuint32 uiMIPWidth = sTextureHeaderDecomp.u32Width>>nLoadFromLevel;
PVRTuint32 uiMIPHeight = sTextureHeaderDecomp.u32Height>>nLoadFromLevel;
//Setup temporary variables.
PVRTuint8* pTempDecompData = (PVRTuint8*)pDecompressedData;
PVRTuint8* pTempCompData = (PVRTuint8*)pTextureData;
if (bIsLegacyPVR)
{
//Decompress all the MIP levels.
for (PVRTuint32 uiFace=0;uiFace<sTextureHeader.u32NumFaces;++uiFace)
{
for (PVRTuint32 uiMIPMap=nLoadFromLevel;uiMIPMap<sTextureHeader.u32MIPMapCount;++uiMIPMap)
{
//Get the face offset. Varies per MIP level.
PVRTuint32 decompressedFaceOffset = PVRTGetTextureDataSize(sTextureHeaderDecomp, uiMIPMap, false, false);
PVRTuint32 compressedFaceOffset = PVRTGetTextureDataSize(sTextureHeader, uiMIPMap, false, false);
//Decompress the texture data.
PVRTDecompressPVRTC(pTempCompData,bIs2bppPVRTC?1:0,uiMIPWidth,uiMIPHeight,pTempDecompData);
//Move forward through the pointers.
pTempDecompData+=decompressedFaceOffset;
pTempCompData+=compressedFaceOffset;
//Work out the current MIP dimensions.
uiMIPWidth=PVRT_MAX(1,uiMIPWidth>>1);
uiMIPHeight=PVRT_MAX(1,uiMIPHeight>>1);
}
//Reset the dims.
uiMIPWidth=sTextureHeader.u32Width;
uiMIPHeight=sTextureHeader.u32Height;
}
}
else
{
//Decompress all the MIP levels.
for (PVRTuint32 uiMIPMap=nLoadFromLevel;uiMIPMap<sTextureHeader.u32MIPMapCount;++uiMIPMap)
{
//Get the face offset. Varies per MIP level.
PVRTuint32 decompressedFaceOffset = PVRTGetTextureDataSize(sTextureHeaderDecomp, uiMIPMap, false, false);
PVRTuint32 compressedFaceOffset = PVRTGetTextureDataSize(sTextureHeader, uiMIPMap, false, false);
for (PVRTuint32 uiFace=0;uiFace<sTextureHeader.u32NumFaces;++uiFace)
{
//Decompress the texture data.
PVRTDecompressPVRTC(pTempCompData,bIs2bppPVRTC?1:0,uiMIPWidth,uiMIPHeight,pTempDecompData);
//Move forward through the pointers.
pTempDecompData+=decompressedFaceOffset;
pTempCompData+=compressedFaceOffset;
}
//Work out the current MIP dimensions.
uiMIPWidth=PVRT_MAX(1,uiMIPWidth>>1);
uiMIPHeight=PVRT_MAX(1,uiMIPHeight>>1);
}
}
}
else
{
PVRTErrorOutputDebug("PVRTTextureLoadFromPointer error: PVRTC not supported.\n");
return PVR_FAIL;
}
}
}
/*!***************************************************************************
@Function PVRTPrint3D
@Input fPosX Position of the text along X
@Input fPosY Position of the text along Y
@Input fScale Scale of the text
@Input Colour Colour of the text
@Input pszFormat Format string for the text
@Return PVR_SUCCESS or PVR_FAIL
@Description Display 3D text on screen.
No window needs to be allocated to use this function.
However, CPVRTPrint3D::SetTextures(...) must have been called
beforehand.
This function accepts formatting in the printf way.
*****************************************************************************/
EPVRTError CPVRTPrint3D::Print3D(float fPosX, float fPosY, const float fScale, unsigned int Colour, const char * const pszFormat, ...)
{
#if !defined (DISABLE_PRINT3D)
va_list args;
static char Text[MAX_LETTERS+1], sPreviousString[MAX_LETTERS+1];
static float XPosPrev, YPosPrev, fScalePrev;
static unsigned int ColourPrev;
static unsigned int nVertices;
// No textures! so... no window
if (!m_bTexturesSet)
{
PVRTErrorOutputDebug("DisplayWindow : You must call CPVRTPrint3D::SetTextures(...) before using this function.\n");
return PVR_FAIL;
}
// Reading the arguments to create our Text string
va_start(args, pszFormat);
#if defined(__SYMBIAN32__) || defined(UITRON) || defined(_UITRON_)
vsprintf(Text, pszFormat, args);
#else
vsnprintf(Text, MAX_LETTERS+1, pszFormat, args);
#endif
va_end(args);
// nothing to be drawn
if(*Text == 0)
return PVR_FAIL;
// Adjust input parameters
if(!m_bUsingProjection)
{
fPosX *= 640.0f/100.0f;
fPosY *= 480.0f/100.0f;
}
// We check if the string has been changed since last time
if(
strcmp (sPreviousString, Text) != 0 ||
fPosX != XPosPrev ||
fPosY != YPosPrev ||
fScale != fScalePrev ||
Colour != ColourPrev ||
m_pPrint3dVtx == NULL)
{
// copy strings
strcpy (sPreviousString, Text);
XPosPrev = fPosX;
YPosPrev = fPosY;
fScalePrev = fScale;
ColourPrev = Colour;
// Create Vertex Buffer (only if it doesn't exist)
if(m_pPrint3dVtx == 0)
{
m_pPrint3dVtx = (SPVRTPrint3DAPIVertex*)malloc(MAX_LETTERS*4*sizeof(SPVRTPrint3DAPIVertex));
if(!m_pPrint3dVtx)
return PVR_FAIL;
}
// Fill up our buffer
nVertices = UpdateLine(0, 0.0f, fPosX, fPosY, fScale, Colour, Text, m_pPrint3dVtx);
}
// Draw the text
DrawLineUP(m_pPrint3dVtx, nVertices);
#endif
return PVR_SUCCESS;
}
/*!***************************************************************************
@Function DisplayWindow
@Input dwWin
@Return PVR_SUCCESS or PVR_FAIL
@Description Display window.
This function MUST be called between a BeginScene/EndScene
pair as it uses D3D render primitive calls.
CPVRTPrint3D::SetTextures(...) must have been called beforehand.
*****************************************************************************/
EPVRTError CPVRTPrint3D::DisplayWindow(unsigned int dwWin)
{
#if !defined (DISABLE_PRINT3D)
unsigned int i;
float fTitleSize = 0.0f;
// No textures! so... no window
if (!m_bTexturesSet)
{
PVRTErrorOutputDebug("DisplayWindow : You must call PVRTPrint3D::SetTextures(...) before using this function.\n");
return PVR_FAIL;
}
// Update Vertex data only when needed
if(m_pWin[dwWin].bNeedUpdated)
{
// TITLE
if(m_pWin[dwWin].dwFlags & Print3D_WIN_TITLE)
{
// Set title size
if(m_pWin[dwWin].fTitleFontSize < 0.0f)
fTitleSize = 8.0f + 16.0f;
else
fTitleSize = m_pWin[dwWin].fTitleFontSize * 23.5f + 16.0f;
// Title
UpdateTitleVertexBuffer(dwWin);
// Background
if (!(m_pWin[dwWin].dwFlags & Print3D_FULL_TRANS))
{
// Draw title background
UpdateBackgroundWindow(
dwWin, m_pWin[dwWin].dwTitleBaseColor,
0.0f,
m_pWin[dwWin].fWinPos[0],
m_pWin[dwWin].fWinPos[1],
m_pWin[dwWin].fWinSize[0],
fTitleSize, &m_pWin[dwWin].pWindowVtxTitle);
}
}
// Main text
UpdateMainTextVertexBuffer(dwWin);
UpdateBackgroundWindow(
dwWin, m_pWin[dwWin].dwWinBaseColor,
0.0f,
m_pWin[dwWin].fWinPos[0],
(m_pWin[dwWin].fWinPos[1] + fTitleSize),
m_pWin[dwWin].fWinSize[0],
m_pWin[dwWin].fWinSize[1], &m_pWin[dwWin].pWindowVtxText);
// Don't update until next change makes it needed
m_pWin[dwWin].bNeedUpdated = false;
}
// Ensure any previously drawn text has been submitted before drawing the window.
Flush();
// Save current render states
APIRenderStates(0);
// DRAW TITLE
if(m_pWin[dwWin].dwFlags & Print3D_WIN_TITLE)
{
if (!(m_pWin[dwWin].dwFlags & Print3D_FULL_TRANS))
{
DrawBackgroundWindowUP(m_pWin[dwWin].pWindowVtxTitle, (m_pWin[dwWin].dwFlags & Print3D_FULL_OPAQUE) ? true : false, (m_pWin[dwWin].dwFlags & Print3D_NO_BORDER) ? false : true);
}
// Left and Right text
DrawLineUP(m_pWin[dwWin].pTitleVtxL, m_pWin[dwWin].nTitleVerticesL);
DrawLineUP(m_pWin[dwWin].pTitleVtxR, m_pWin[dwWin].nTitleVerticesR);
}
// DRAW WINDOW
if (m_pWin[dwWin].dwFlags & Print3D_WIN_ACTIVE)
{
// Background
if (!(m_pWin[dwWin].dwFlags & Print3D_FULL_TRANS))
{
DrawBackgroundWindowUP(m_pWin[dwWin].pWindowVtxText, (m_pWin[dwWin].dwFlags & Print3D_FULL_OPAQUE) ? true : false, (m_pWin[dwWin].dwFlags & Print3D_NO_BORDER) ? false : true);
}
// Text, line by line
for (i=0; i<m_pWin[dwWin].dwBufferSizeY; i++)
{
DrawLineUP(m_pWin[dwWin].pLineVtx[i], m_pWin[dwWin].nLineVertices[i]);
}
}
// Restore render states
APIRenderStates(1);
#endif
return PVR_SUCCESS;
}
/*!***************************************************************************
@Function PVRTTextureLoadFromPointer
@Input pointer Pointer to header-texture's structure
@Modified texName the OpenGL ES texture name as returned by glBindTexture
@Modified psTextureHeader Pointer to a PVR_Texture_Header struct. Modified to
contain the header data of the returned texture Ignored if NULL.
@Input bAllowDecompress Allow decompression if PVRTC is not supported in hardware.
@Input nLoadFromLevel Which mipmap level to start loading from (0=all)
@Input texPtr If null, texture follows header, else texture is here.
@Return PVR_SUCCESS on success
@Description Allows textures to be stored in C header files and loaded in. Can load parts of a
mipmaped texture (ie skipping the highest detailed levels).In OpenGL Cube Map, each
texture's up direction is defined as next (view direction, up direction),
(+x,-y)(-x,-y)(+y,+z)(-y,-z)(+z,-y)(-z,-y).
Sets the texture MIN/MAG filter to GL_LINEAR_MIPMAP_NEAREST/GL_LINEAR
if mipmaps are present, GL_LINEAR/GL_LINEAR otherwise.
*****************************************************************************/
EPVRTError PVRTTextureLoadFromPointer( const void* pointer,
GLuint *const texName,
const void *psTextureHeader,
bool bAllowDecompress,
const unsigned int nLoadFromLevel,
const void * const texPtr)
{
PVR_Texture_Header* psPVRHeader = (PVR_Texture_Header*)pointer;
unsigned int u32NumSurfs;
// perform checks for old PVR psPVRHeader
if(psPVRHeader->dwHeaderSize!=sizeof(PVR_Texture_Header))
{ // Header V1
if(psPVRHeader->dwHeaderSize==PVRTEX_V1_HEADER_SIZE)
{ // react to old psPVRHeader: i.e. fill in numsurfs as this is missing from old header
PVRTErrorOutputDebug("PVRTTextureLoadFromPointer warning: this is an old pvr"
" - you can use PVRTexTool to update its header.\n");
if(psPVRHeader->dwpfFlags&PVRTEX_CUBEMAP)
u32NumSurfs = 6;
else
u32NumSurfs = 1;
}
else
{ // not a pvr at all
PVRTErrorOutputDebug("PVRTTextureLoadFromPointer failed: not a valid pvr.\n");
return PVR_FAIL;
}
}
else
{ // Header V2
if(psPVRHeader->dwNumSurfs<1)
{ // encoded with old version of PVRTexTool before zero numsurfs bug found.
if(psPVRHeader->dwpfFlags & PVRTEX_CUBEMAP)
u32NumSurfs = 6;
else
u32NumSurfs = 1;
}
else
{
u32NumSurfs = psPVRHeader->dwNumSurfs;
}
}
GLuint textureName;
GLenum eTextureFormat = 0;
GLenum eTextureInternalFormat = 0; // often this is the same as textureFormat, but not for BGRA8888 on the iPhone, for instance
GLenum eTextureType = 0;
GLenum eTarget;
bool bIsPVRTCSupported = CPVRTgles2Ext::IsGLExtensionSupported("GL_IMG_texture_compression_pvrtc");
#ifndef TARGET_OS_IPHONE
bool bIsBGRA8888Supported = CPVRTgles2Ext::IsGLExtensionSupported("GL_IMG_texture_format_BGRA8888");
#else
bool bIsBGRA8888Supported = CPVRTgles2Ext::IsGLExtensionSupported("GL_APPLE_texture_format_BGRA8888");
#endif
bool bIsFloat16Supported = CPVRTgles2Ext::IsGLExtensionSupported("GL_OES_texture_half_float");
bool bIsFloat32Supported = CPVRTgles2Ext::IsGLExtensionSupported("GL_OES_texture_float");
#ifndef TARGET_OS_IPHONE
bool bIsETCSupported = CPVRTgles2Ext::IsGLExtensionSupported("GL_OES_compressed_ETC1_RGB8_texture");
#endif
*texName = 0; // install warning value
bool bIsCompressedFormatSupported = false, bIsCompressedFormat = false;
/* Only accept untwiddled data UNLESS texture format is PVRTC */
if ( ((psPVRHeader->dwpfFlags & PVRTEX_TWIDDLE) == PVRTEX_TWIDDLE)
&& ((psPVRHeader->dwpfFlags & PVRTEX_PIXELTYPE)!=OGL_PVRTC2)
&& ((psPVRHeader->dwpfFlags & PVRTEX_PIXELTYPE)!=OGL_PVRTC4) )
{
// We need to load untwiddled textures -- GL will twiddle for us.
PVRTErrorOutputDebug("PVRTTextureLoadFromPointer failed: texture should be untwiddled.\n");
return PVR_FAIL;
}
unsigned int ePixelType = psPVRHeader->dwpfFlags & PVRTEX_PIXELTYPE;
switch(ePixelType)
{
case OGL_RGBA_4444:
eTextureFormat = eTextureInternalFormat = GL_RGBA;
eTextureType = GL_UNSIGNED_SHORT_4_4_4_4;
break;
case OGL_RGBA_5551:
eTextureFormat = eTextureInternalFormat = GL_RGBA ;
eTextureType = GL_UNSIGNED_SHORT_5_5_5_1;
break;
case OGL_RGBA_8888:
eTextureFormat = eTextureInternalFormat = GL_RGBA;
eTextureType = GL_UNSIGNED_BYTE ;
break;
/* New OGL Specific Formats Added */
case OGL_RGB_565:
eTextureFormat = eTextureInternalFormat = GL_RGB ;
eTextureType = GL_UNSIGNED_SHORT_5_6_5;
break;
case OGL_RGB_555:
PVRTErrorOutputDebug("PVRTTextureLoadFromPointer failed: pixel type OGL_RGB_555 not supported.\n");
return PVR_FAIL; // Deal with exceptional case
case OGL_RGB_888:
eTextureFormat = eTextureInternalFormat = GL_RGB ;
eTextureType = GL_UNSIGNED_BYTE;
break;
case OGL_I_8:
eTextureFormat = eTextureInternalFormat = GL_LUMINANCE;
eTextureType = GL_UNSIGNED_BYTE;
break;
case OGL_AI_88:
eTextureFormat = eTextureInternalFormat = GL_LUMINANCE_ALPHA ;
eTextureType = GL_UNSIGNED_BYTE;
break;
case MGLPT_PVRTC2:
case OGL_PVRTC2:
if(bIsPVRTCSupported)
{
bIsCompressedFormatSupported = bIsCompressedFormat = true;
eTextureFormat = psPVRHeader->dwAlphaBitMask==0 ? GL_COMPRESSED_RGB_PVRTC_2BPPV1_IMG : GL_COMPRESSED_RGBA_PVRTC_2BPPV1_IMG ; // PVRTC2
}
else
{
if(bAllowDecompress)
{
bIsCompressedFormatSupported = false;
bIsCompressedFormat = true;
eTextureFormat = eTextureInternalFormat = GL_RGBA;
eTextureType = GL_UNSIGNED_BYTE;
PVRTErrorOutputDebug("PVRTTextureLoadFromPointer warning: PVRTC2 not supported. Converting to RGBA8888 instead.\n");
}
else
{
PVRTErrorOutputDebug("PVRTTextureLoadFromPointer error: PVRTC2 not supported.\n");
return PVR_FAIL;
}
}
break;
case MGLPT_PVRTC4:
case OGL_PVRTC4:
if(bIsPVRTCSupported)
{
bIsCompressedFormatSupported = bIsCompressedFormat = true;
eTextureFormat = psPVRHeader->dwAlphaBitMask==0 ? GL_COMPRESSED_RGB_PVRTC_4BPPV1_IMG : GL_COMPRESSED_RGBA_PVRTC_4BPPV1_IMG ; // PVRTC4
}
else
{
if(bAllowDecompress)
{
bIsCompressedFormatSupported = false;
bIsCompressedFormat = true;
eTextureFormat = eTextureInternalFormat = GL_RGBA;
eTextureType = GL_UNSIGNED_BYTE;
PVRTErrorOutputDebug("PVRTTextureLoadFromPointer warning: PVRTC4 not supported. Converting to RGBA8888 instead.\n");
}
else
{
PVRTErrorOutputDebug("PVRTTextureLoadFromPointer error: PVRTC4 not supported.\n");
return PVR_FAIL;
}
}
break;
case OGL_A_8:
eTextureFormat = eTextureInternalFormat = GL_ALPHA;
eTextureType = GL_UNSIGNED_BYTE;
break;
case OGL_BGRA_8888:
if(bIsBGRA8888Supported)
{
eTextureType = GL_UNSIGNED_BYTE;
#ifndef __APPLE__
eTextureFormat = eTextureInternalFormat = GL_BGRA;
#else
eTextureFormat = GL_BGRA;
eTextureInternalFormat = GL_RGBA;
#endif
}
else
{
PVRTErrorOutputDebug("PVRTTextureLoadFromPointer failed: Unable to load GL_BGRA texture as extension GL_IMG_texture_format_BGRA8888 is unsupported.\n");
return PVR_FAIL;
}
break;
case D3D_ABGR_16161616F:
if(bIsFloat16Supported)
{
eTextureFormat = eTextureInternalFormat = GL_RGBA ;
eTextureType = GL_HALF_FLOAT_OES;
}
break;
case D3D_ABGR_32323232F:
if(bIsFloat32Supported)
{
eTextureFormat = eTextureInternalFormat = GL_RGBA ;
eTextureType = GL_FLOAT;
}
break;
#ifndef TARGET_OS_IPHONE
case ETC_RGB_4BPP:
if(bIsETCSupported)
{
bIsCompressedFormatSupported = bIsCompressedFormat = true;
eTextureFormat = GL_ETC1_RGB8_OES;
}
else
{
if(bAllowDecompress)
{
bIsCompressedFormatSupported = false;
bIsCompressedFormat = true;
eTextureFormat = GL_RGBA;
eTextureType = GL_UNSIGNED_BYTE;
PVRTErrorOutputDebug("PVRTTextureLoadFromPointer warning: ETC not supported. Converting to RGBA8888 instead.\n");
}
else
{
PVRTErrorOutputDebug("PVRTTextureLoadFromPointer error: ETC not supported.\n");
return PVR_FAIL;
}
}
break;
#endif
default: // NOT SUPPORTED
PVRTErrorOutputDebug("PVRTTextureLoadFromPointer failed: pixel type not supported.\n");
return PVR_FAIL;
}
// load the texture up
glPixelStorei(GL_UNPACK_ALIGNMENT,1); // Never have row-aligned in psPVRHeaders
glGenTextures(1, &textureName);
// check that this data is cube map data or not.
if(psPVRHeader->dwpfFlags & PVRTEX_CUBEMAP)
eTarget = GL_TEXTURE_CUBE_MAP;
else
eTarget = GL_TEXTURE_2D;
glBindTexture(eTarget, textureName);
if(glGetError())
{
PVRTErrorOutputDebug("PVRTTextureLoadFromPointer failed: glBindTexture() failed.\n");
return PVR_FAIL;
}
for(unsigned int i=0; i<u32NumSurfs; i++)
{
char *theTexturePtr = (texPtr? (char*)texPtr : (char*)psPVRHeader + psPVRHeader->dwHeaderSize) + psPVRHeader->dwTextureDataSize * i;
char *theTextureToLoad = 0;
int nMIPMapLevel;
int nTextureLevelsNeeded = (psPVRHeader->dwpfFlags & PVRTEX_MIPMAP)? psPVRHeader->dwMipMapCount : 0;
unsigned int nSizeX= psPVRHeader->dwWidth, nSizeY = psPVRHeader->dwHeight;
unsigned int CompressedImageSize = 0;
for(nMIPMapLevel = 0; nMIPMapLevel <= nTextureLevelsNeeded; nSizeX=PVRT_MAX(nSizeX/2, (unsigned int)1), nSizeY=PVRT_MAX(nSizeY/2, (unsigned int)1), nMIPMapLevel++)
{
theTextureToLoad = theTexturePtr;
// Load the Texture
// If the texture is PVRTC or ETC then use GLCompressedTexImage2D
if(bIsCompressedFormat)
{
/* Calculate how many bytes this MIP level occupies */
if ((psPVRHeader->dwpfFlags & PVRTEX_PIXELTYPE)==OGL_PVRTC2)
{
CompressedImageSize = ( PVRT_MAX(nSizeX, PVRTC2_MIN_TEXWIDTH) * PVRT_MAX(nSizeY, PVRTC2_MIN_TEXHEIGHT) * psPVRHeader->dwBitCount) / 8;
}
else if ((psPVRHeader->dwpfFlags & PVRTEX_PIXELTYPE)==OGL_PVRTC4)
{
CompressedImageSize = ( PVRT_MAX(nSizeX, PVRTC4_MIN_TEXWIDTH) * PVRT_MAX(nSizeY, PVRTC4_MIN_TEXHEIGHT) * psPVRHeader->dwBitCount) / 8;
}
else
{// ETC
CompressedImageSize = ( PVRT_MAX(nSizeX, ETC_MIN_TEXWIDTH) * PVRT_MAX(nSizeY, ETC_MIN_TEXHEIGHT) * psPVRHeader->dwBitCount) / 8;
}
if(((signed int)nMIPMapLevel - (signed int)nLoadFromLevel) >= 0)
{
if(bIsCompressedFormatSupported)
{
if(psPVRHeader->dwpfFlags&PVRTEX_CUBEMAP)
{
/* Load compressed texture data at selected MIP level */
glCompressedTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X+i, nMIPMapLevel-nLoadFromLevel, eTextureFormat, nSizeX, nSizeY, 0,
CompressedImageSize, theTextureToLoad);
}
else
{
/* Load compressed texture data at selected MIP level */
glCompressedTexImage2D(GL_TEXTURE_2D, nMIPMapLevel-nLoadFromLevel, eTextureFormat, nSizeX, nSizeY, 0,
CompressedImageSize, theTextureToLoad);
}
}
else
{
// Convert PVRTC to 32-bit
PVRTuint8 *u8TempTexture = (PVRTuint8*)malloc(nSizeX*nSizeY*4);
if ((psPVRHeader->dwpfFlags & PVRTEX_PIXELTYPE)==OGL_PVRTC2)
{
PVRTDecompressPVRTC(theTextureToLoad, 1, nSizeX, nSizeY, u8TempTexture);
}
else if((psPVRHeader->dwpfFlags & PVRTEX_PIXELTYPE)==OGL_PVRTC4)
{
PVRTDecompressPVRTC(theTextureToLoad, 0, nSizeX, nSizeY, u8TempTexture);
}
else
{ // ETC
PVRTDecompressETC(theTextureToLoad, nSizeX, nSizeY, u8TempTexture, 0);
}
if(psPVRHeader->dwpfFlags&PVRTEX_CUBEMAP)
{// Load compressed cubemap data at selected MIP level
// Upload the texture as 32-bits
glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X+i,nMIPMapLevel-nLoadFromLevel,GL_RGBA,
nSizeX,nSizeY,0, GL_RGBA,GL_UNSIGNED_BYTE,u8TempTexture);
FREE(u8TempTexture);
}
else
{// Load compressed 2D data at selected MIP level
// Upload the texture as 32-bits
glTexImage2D(GL_TEXTURE_2D,nMIPMapLevel-nLoadFromLevel,GL_RGBA,
nSizeX,nSizeY,0, GL_RGBA,GL_UNSIGNED_BYTE,u8TempTexture);
FREE(u8TempTexture);
}
}
}
}
else
{
if(((signed int)nMIPMapLevel - (signed int)nLoadFromLevel) >= 0)
{
if(psPVRHeader->dwpfFlags&PVRTEX_CUBEMAP)
{
/* Load uncompressed texture data at selected MIP level */
glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X+i,nMIPMapLevel-nLoadFromLevel,eTextureInternalFormat,nSizeX,nSizeY,
0, eTextureFormat,eTextureType,theTextureToLoad);
}
else
{
/* Load uncompressed texture data at selected MIP level */
glTexImage2D(GL_TEXTURE_2D,nMIPMapLevel-nLoadFromLevel,eTextureInternalFormat,nSizeX,nSizeY,0,eTextureFormat,eTextureType,theTextureToLoad);
}
}
}
if(glGetError())
{
PVRTErrorOutputDebug("PVRTTextureLoadFromPointer failed: glTexImage2D() failed.\n");
return PVR_FAIL;
}
// offset the texture pointer by one mip-map level
/* PVRTC case */
if ( bIsCompressedFormat )
{
theTexturePtr += CompressedImageSize;
}
else
{
/* New formula that takes into account bit counts inferior to 8 (e.g. 1 bpp) */
theTexturePtr += (nSizeX * nSizeY * psPVRHeader->dwBitCount + 7) / 8;
}
}
}
*texName = textureName;
if(psTextureHeader)
{
*(PVR_Texture_Header*)psTextureHeader = *psPVRHeader;
((PVR_Texture_Header*)psTextureHeader)->dwPVR = PVRTEX_IDENTIFIER;
((PVR_Texture_Header*)psTextureHeader)->dwNumSurfs = u32NumSurfs;
}
if(eTextureType==GL_FLOAT || eTextureType==GL_HALF_FLOAT_OES)
{
if(!psPVRHeader->dwMipMapCount)
{ // Texture filter modes are limited to these for float textures
glTexParameteri(eTarget, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(eTarget, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
}
else
{
glTexParameteri(eTarget, GL_TEXTURE_MIN_FILTER, GL_NEAREST_MIPMAP_NEAREST);
glTexParameteri(eTarget, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
}
}
else
{
if(!psPVRHeader->dwMipMapCount)
{
glTexParameteri(eTarget, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(eTarget, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
}
else
{
glTexParameteri(eTarget, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST);
glTexParameteri(eTarget, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
}
}
if(
(psPVRHeader->dwWidth & (psPVRHeader->dwWidth - 1)) |
(psPVRHeader->dwHeight & (psPVRHeader->dwHeight - 1)))
{
/*
NPOT textures requires the wrap mode to be set explicitly to
GL_CLAMP_TO_EDGE or the texture will be inconsistent.
*/
glTexParameteri(eTarget, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(eTarget, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
}
else
{
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
}
return PVR_SUCCESS;
}