//-----------------------------------------------------------------------------
// innerCreateTexture
//-----------------------------------------------------------------------------
// This just creates the texture, no info is actually loaded to it. We do that later.
void GFXGLTextureManager::innerCreateTexture( GFXGLTextureObject *retTex,
U32 height,
U32 width,
U32 depth,
GFXFormat format,
GFXTextureProfile *profile,
U32 numMipLevels,
bool forceMips)
{
// No 24 bit formats. They trigger various oddities because hardware (and Apple's drivers apparently...) don't natively support them.
if(format == GFXFormatR8G8B8)
format = GFXFormatR8G8B8A8;
retTex->mFormat = format;
retTex->mIsZombie = false;
retTex->mIsNPoT2 = false;
GLenum binding = ( (height == 1 || width == 1) && ( height != width ) ) ? GL_TEXTURE_1D : ( (depth == 0) ? GL_TEXTURE_2D : GL_TEXTURE_3D );
if((profile->testFlag(GFXTextureProfile::RenderTarget) || profile->testFlag(GFXTextureProfile::ZTarget)) && (!isPow2(width) || !isPow2(height)) && !depth)
retTex->mIsNPoT2 = true;
retTex->mBinding = binding;
// Bind it
PRESERVE_TEXTURE(binding);
glBindTexture(retTex->getBinding(), retTex->getHandle());
// Create it
// TODO: Reenable mipmaps on render targets when Apple fixes their drivers
if(forceMips && !retTex->mIsNPoT2)
{
retTex->mMipLevels = numMipLevels > 1 ? numMipLevels : 0;
}
else if(profile->testFlag(GFXTextureProfile::NoMipmap) || profile->testFlag(GFXTextureProfile::RenderTarget) || numMipLevels == 1 || retTex->mIsNPoT2)
{
retTex->mMipLevels = 1;
}
else
{
retTex->mMipLevels = numMipLevels;
}
if(!retTex->mIsNPoT2)
{
if(!isPow2(width))
width = getNextPow2(width);
if(!isPow2(height))
height = getNextPow2(height);
if(depth && !isPow2(depth))
depth = getNextPow2(depth);
}
AssertFatal(GFXGLTextureInternalFormat[format] != GL_ZERO, "GFXGLTextureManager::innerCreateTexture - invalid internal format");
AssertFatal(GFXGLTextureFormat[format] != GL_ZERO, "GFXGLTextureManager::innerCreateTexture - invalid format");
AssertFatal(GFXGLTextureType[format] != GL_ZERO, "GFXGLTextureManager::innerCreateTexture - invalid type");
//calculate num mipmaps
if(retTex->mMipLevels == 0)
retTex->mMipLevels = getMaxMipmaps(width, height, 1);
glTexParameteri(binding, GL_TEXTURE_MAX_LEVEL, retTex->mMipLevels-1 );
//If it wasn't for problems on amd drivers this next part could be really simplified and we wouldn't need to go through manually creating our
//mipmap pyramid and instead just use glGenerateMipmap
if(isCompressedFormat(format))
{
AssertFatal(binding == GL_TEXTURE_2D,
"GFXGLTextureManager::innerCreateTexture - Only compressed 2D textures are supported");
U32 tempWidth = width;
U32 tempHeight = height;
U32 size = getCompressedSurfaceSize(format,height,width);
//Fill compressed images with 0's
U8 *pTemp = (U8*)dMalloc(sizeof(U8)*size);
dMemset(pTemp,0,size);
for(U32 i=0; i< retTex->mMipLevels; i++)
{
tempWidth = getMax( U32(1), width >> i );
tempHeight = getMax( U32(1), height >> i );
size = getCompressedSurfaceSize(format,width,height,i);
glCompressedTexImage2D(binding,i,GFXGLTextureInternalFormat[format],tempWidth,tempHeight,0,size,pTemp);
}
dFree(pTemp);
}
else
{
if(binding == GL_TEXTURE_2D)
// Creation / loading methods
void GL3PlusTexture::createInternalResourcesImpl(void)
{
// set HardwareBuffer::Usage for TU_RENDERTARGET if nothing else specified
if((mUsage & TU_RENDERTARGET) && (mUsage & ~TU_RENDERTARGET) == 0)
mUsage |= HardwareBuffer::HBU_DYNAMIC;
// Adjust format if required.
mFormat = TextureManager::getSingleton().getNativeFormat(mTextureType, mFormat, mUsage);
// Check requested number of mipmaps.
uint32 maxMips = getMaxMipmaps();
if (PixelUtil::isCompressed(mFormat) && (mNumMipmaps == 0))
mNumRequestedMipmaps = 0;
mNumMipmaps = mNumRequestedMipmaps;
if (mNumMipmaps > maxMips)
mNumMipmaps = maxMips;
// Create a texture object and identify its GL type.
OGRE_CHECK_GL_ERROR(glGenTextures(1, &mTextureID));
GLenum texTarget = getGL3PlusTextureTarget();
// Calculate size for all mip levels of the texture.
uint32 width, height, depth;
if ((mWidth * PixelUtil::getNumElemBytes(mFormat)) & 3) {
// Standard alignment of 4 is not right for some formats.
OGRE_CHECK_GL_ERROR(glPixelStorei(GL_UNPACK_ALIGNMENT, 1));
}
// Bind texture object to its type, making it the active texture object
// for that type.
mRenderSystem->_getStateCacheManager()->bindGLTexture( texTarget, mTextureID );
mRenderSystem->_getStateCacheManager()->setTexParameteri(texTarget, GL_TEXTURE_BASE_LEVEL, 0);
mRenderSystem->_getStateCacheManager()->setTexParameteri(texTarget, GL_TEXTURE_MAX_LEVEL, mNumMipmaps);
// Set some misc default parameters, these can of course be changed later.
mRenderSystem->_getStateCacheManager()->setTexParameteri(texTarget,
GL_TEXTURE_MIN_FILTER, GL_NEAREST);
mRenderSystem->_getStateCacheManager()->setTexParameteri(texTarget,
GL_TEXTURE_MAG_FILTER, GL_NEAREST);
mRenderSystem->_getStateCacheManager()->setTexParameteri(texTarget,
GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
mRenderSystem->_getStateCacheManager()->setTexParameteri(texTarget,
GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
// Set up texture swizzling.
mRenderSystem->_getStateCacheManager()->setTexParameteri(texTarget, GL_TEXTURE_SWIZZLE_R, GL_RED);
mRenderSystem->_getStateCacheManager()->setTexParameteri(texTarget, GL_TEXTURE_SWIZZLE_G, GL_GREEN);
mRenderSystem->_getStateCacheManager()->setTexParameteri(texTarget, GL_TEXTURE_SWIZZLE_B, GL_BLUE);
mRenderSystem->_getStateCacheManager()->setTexParameteri(texTarget, GL_TEXTURE_SWIZZLE_A, GL_ALPHA);
if (PixelUtil::isLuminance(mFormat) && (mRenderSystem->hasMinGLVersion(3, 3) || mRenderSystem->checkExtension("GL_ARB_texture_swizzle")))
{
if (PixelUtil::getComponentCount(mFormat) == 2)
{
mRenderSystem->_getStateCacheManager()->setTexParameteri(texTarget, GL_TEXTURE_SWIZZLE_R, GL_RED);
mRenderSystem->_getStateCacheManager()->setTexParameteri(texTarget, GL_TEXTURE_SWIZZLE_G, GL_RED);
mRenderSystem->_getStateCacheManager()->setTexParameteri(texTarget, GL_TEXTURE_SWIZZLE_B, GL_RED);
mRenderSystem->_getStateCacheManager()->setTexParameteri(texTarget, GL_TEXTURE_SWIZZLE_A, GL_GREEN);
}
else
{
mRenderSystem->_getStateCacheManager()->setTexParameteri(texTarget, GL_TEXTURE_SWIZZLE_R, GL_RED);
mRenderSystem->_getStateCacheManager()->setTexParameteri(texTarget, GL_TEXTURE_SWIZZLE_G, GL_RED);
mRenderSystem->_getStateCacheManager()->setTexParameteri(texTarget, GL_TEXTURE_SWIZZLE_B, GL_RED);
mRenderSystem->_getStateCacheManager()->setTexParameteri(texTarget, GL_TEXTURE_SWIZZLE_A, GL_ONE);
}
}
GLenum format = GL3PlusPixelUtil::getGLInternalFormat(mFormat, mHwGamma);
GLenum datatype = GL3PlusPixelUtil::getGLOriginDataType(mFormat);
width = mWidth;
height = mHeight;
depth = mDepth;
// Allocate texture storage so that glTexSubImageXD can be
// used to upload the texture.
if (PixelUtil::isCompressed(mFormat))
{
// Compressed formats
GLsizei size;
for (uint32 mip = 0; mip <= mNumMipmaps; mip++)
{
size = static_cast<GLsizei>(PixelUtil::getMemorySize(width, height, depth, mFormat));
// std::stringstream str;
// str << "GL3PlusTexture::create - " << StringConverter::toString(mTextureID)
// << " bytes: " << StringConverter::toString(PixelUtil::getMemorySize(mWidth, mHeight, mDepth, mFormat))
// << " Mip: " + StringConverter::toString(mip)
// << " Width: " << StringConverter::toString(width)
// << " Height: " << StringConverter::toString(height)
// << " Format " << PixelUtil::getFormatName(mFormat)
// << " Internal Format: 0x" << std::hex << format
// << " Origin Format: 0x" << std::hex << GL3PlusPixelUtil::getGLOriginFormat(mFormat)
// << " Data type: 0x" << std::hex << datatype;
// LogManager::getSingleton().logMessage(LML_NORMAL, str.str());
switch(mTextureType)
{
case TEX_TYPE_1D:
OGRE_CHECK_GL_ERROR(glCompressedTexImage1D(GL_TEXTURE_1D, mip, format,
width, 0,
size, NULL));
break;
case TEX_TYPE_2D:
OGRE_CHECK_GL_ERROR(glCompressedTexImage2D(GL_TEXTURE_2D,
mip,
format,
width, height,
0,
size,
NULL));
break;
case TEX_TYPE_2D_RECT:
OGRE_CHECK_GL_ERROR(glCompressedTexImage2D(GL_TEXTURE_RECTANGLE,
mip,
format,
width, height,
0,
size,
NULL));
break;
case TEX_TYPE_2D_ARRAY:
case TEX_TYPE_3D:
OGRE_CHECK_GL_ERROR(glCompressedTexImage3D(texTarget, mip, format,
width, height, depth, 0,
size, NULL));
break;
case TEX_TYPE_CUBE_MAP:
for(int face = 0; face < 6; face++) {
OGRE_CHECK_GL_ERROR(glCompressedTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X + face, mip, format,
width, height, 0,
size, NULL));
}
break;
default:
break;
};
if (width > 1)
{
width = width / 2;
}
if (height > 1)
{
height = height / 2;
}
if (depth > 1 && mTextureType != TEX_TYPE_2D_ARRAY)
{
depth = depth / 2;
}
}
}
else
{
if (mRenderSystem->hasMinGLVersion(4, 2) || mRenderSystem->checkExtension("GL_ARB_texture_storage"))
{
switch(mTextureType)
{
case TEX_TYPE_1D:
OGRE_CHECK_GL_ERROR(glTexStorage1D(GL_TEXTURE_1D, GLsizei(mNumMipmaps+1), format, GLsizei(width)));
break;
case TEX_TYPE_2D:
case TEX_TYPE_2D_RECT:
OGRE_CHECK_GL_ERROR(glTexStorage2D(GL_TEXTURE_2D, GLsizei(mNumMipmaps+1), format, GLsizei(width), GLsizei(height)));
break;
case TEX_TYPE_CUBE_MAP:
OGRE_CHECK_GL_ERROR(glTexStorage2D(GL_TEXTURE_CUBE_MAP, GLsizei(mNumMipmaps+1), format, GLsizei(width), GLsizei(height)));
break;
case TEX_TYPE_2D_ARRAY:
OGRE_CHECK_GL_ERROR(glTexStorage3D(GL_TEXTURE_2D_ARRAY, GLsizei(mNumMipmaps+1), format, GLsizei(width), GLsizei(height), GLsizei(depth)));
break;
case TEX_TYPE_3D:
OGRE_CHECK_GL_ERROR(glTexStorage3D(GL_TEXTURE_3D, GLsizei(mNumMipmaps+1), format, GLsizei(width), GLsizei(height), GLsizei(depth)));
break;
}
}
else
{
GLenum originFormat = GL3PlusPixelUtil::getGLOriginFormat(mFormat);
// Run through this process to pregenerate mipmap pyramid
for(uint32 mip = 0; mip <= mNumMipmaps; mip++)
{
// std::stringstream str;
// str << "GL3PlusTexture::create - " << StringConverter::toString(mTextureID)
// << " bytes: " << StringConverter::toString(PixelUtil::getMemorySize(width, height, depth, mFormat))
// << " Mip: " + StringConverter::toString(mip)
// << " Width: " << StringConverter::toString(width)
// << " Height: " << StringConverter::toString(height)
// << " Format " << PixelUtil::getFormatName(mFormat)
// << " Internal Format: 0x" << std::hex << format
// << " Origin Format: 0x" << std::hex << GL3PlusPixelUtil::getGLOriginFormat(mFormat)
// << " Data type: 0x" << std::hex << datatype;
// LogManager::getSingleton().logMessage(LML_NORMAL, str.str());
// Normal formats
switch(mTextureType)
{
case TEX_TYPE_1D:
OGRE_CHECK_GL_ERROR(glTexImage1D(GL_TEXTURE_1D, mip, format,
width, 0,
originFormat, datatype, NULL));
break;
case TEX_TYPE_2D:
OGRE_CHECK_GL_ERROR(glTexImage2D(GL_TEXTURE_2D,
mip,
format,
width, height,
0,
originFormat,
datatype, NULL));
break;
case TEX_TYPE_2D_RECT:
OGRE_CHECK_GL_ERROR(glTexImage2D(GL_TEXTURE_RECTANGLE,
mip,
format,
width, height,
0,
originFormat,
datatype, NULL));
break;
case TEX_TYPE_3D:
case TEX_TYPE_2D_ARRAY:
OGRE_CHECK_GL_ERROR(glTexImage3D(texTarget, mip, format,
width, height, depth, 0,
originFormat, datatype, NULL));
break;
case TEX_TYPE_CUBE_MAP:
for(int face = 0; face < 6; face++) {
OGRE_CHECK_GL_ERROR(glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X + face, mip, format,
width, height, 0,
originFormat, datatype, NULL));
}
break;
default:
break;
};
if (width > 1)
{
width = width / 2;
}
if (height > 1)
{
height = height / 2;
}
if (depth > 1 && mTextureType != TEX_TYPE_2D_ARRAY)
{
depth = depth / 2;
}
}
}
}
// Reset unpack alignment to defaults
OGRE_CHECK_GL_ERROR(glPixelStorei(GL_UNPACK_ALIGNMENT, 4));
_createSurfaceList();
// Generate mipmaps after all texture levels have been loaded
// This is required for compressed formats such as DXT
if (PixelUtil::isCompressed(mFormat) && mUsage & TU_AUTOMIPMAP)
{
OGRE_CHECK_GL_ERROR(glGenerateMipmap(getGL3PlusTextureTarget()));
}
// Get final internal format.
mFormat = getBuffer(0,0)->getFormat();
}
//* Creation / loading methods ********************************************
void GLTexture::createInternalResourcesImpl(void)
{
if (!GLEW_VERSION_1_2 && mTextureType == TEX_TYPE_3D)
OGRE_EXCEPT(Exception::ERR_NOT_IMPLEMENTED,
"3D Textures not supported before OpenGL 1.2",
"GLTexture::createInternalResourcesImpl");
if (!GLEW_VERSION_2_0 && mTextureType == TEX_TYPE_2D_ARRAY)
OGRE_EXCEPT(Exception::ERR_NOT_IMPLEMENTED,
"2D texture arrays not supported before OpenGL 2.0",
"GLTexture::createInternalResourcesImpl");
if (mTextureType == TEX_TYPE_EXTERNAL_OES) {
OGRE_EXCEPT(
Exception::ERR_RENDERINGAPI_ERROR,
"TEX_TYPE_EXTERNAL_OES is not available for openGL",
"GLTexture::createInternalResourcesImpl"
);
}
// Convert to nearest power-of-two size if required
mWidth = GLPixelUtil::optionalPO2(mWidth);
mHeight = GLPixelUtil::optionalPO2(mHeight);
mDepth = GLPixelUtil::optionalPO2(mDepth);
// Adjust format if required
mFormat = TextureManager::getSingleton().getNativeFormat(mTextureType, mFormat, mUsage);
// Check requested number of mipmaps
uint32 maxMips = getMaxMipmaps();
mNumMipmaps = mNumRequestedMipmaps;
if(mNumMipmaps>maxMips)
mNumMipmaps = maxMips;
// Check if we can do HW mipmap generation
mMipmapsHardwareGenerated = true;
// Generate texture name
glGenTextures( 1, &mTextureID );
// Set texture type
mRenderSystem->_getStateCacheManager()->bindGLTexture( getGLTextureTarget(), mTextureID );
// This needs to be set otherwise the texture doesn't get rendered
if (GLEW_VERSION_1_2)
mRenderSystem->_getStateCacheManager()->setTexParameteri(getGLTextureTarget(),
GL_TEXTURE_MAX_LEVEL, mNumMipmaps);
// Set some misc default parameters so NVidia won't complain, these can of course be changed later
mRenderSystem->_getStateCacheManager()->setTexParameteri(getGLTextureTarget(), GL_TEXTURE_MIN_FILTER, GL_NEAREST);
mRenderSystem->_getStateCacheManager()->setTexParameteri(getGLTextureTarget(), GL_TEXTURE_MAG_FILTER, GL_NEAREST);
if (GLEW_VERSION_1_2)
{
mRenderSystem->_getStateCacheManager()->setTexParameteri(getGLTextureTarget(), GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
mRenderSystem->_getStateCacheManager()->setTexParameteri(getGLTextureTarget(), GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
}
if ((mUsage & TU_AUTOMIPMAP) && mNumRequestedMipmaps)
{
mRenderSystem->_getStateCacheManager()->setTexParameteri( getGLTextureTarget(), GL_GENERATE_MIPMAP, GL_TRUE );
}
// Allocate internal buffer so that glTexSubImageXD can be used
// Internal format
GLenum internalformat = GLPixelUtil::getGLInternalFormat(mFormat, mHwGamma);
uint32 width = mWidth;
uint32 height = mHeight;
uint32 depth = mDepth;
GLenum format = GLPixelUtil::getGLOriginFormat(mFormat);
GLenum datatype = GLPixelUtil::getGLOriginDataType(mFormat);
if(PixelUtil::isCompressed(mFormat))
{
// Compressed formats
GLsizei size = static_cast<GLsizei>(PixelUtil::getMemorySize(mWidth, mHeight, mDepth, mFormat));
// Provide temporary buffer filled with zeroes as glCompressedTexImageXD does not
// accept a 0 pointer like normal glTexImageXD
// Run through this process for every mipmap to pregenerate mipmap piramid
std::vector<uint8> tmpdata(size);
for(uint32 mip=0; mip<=mNumMipmaps; mip++)
{
size = static_cast<GLsizei>(PixelUtil::getMemorySize(width, height, depth, mFormat));
switch(mTextureType)
{
case TEX_TYPE_1D:
glCompressedTexImage1DARB(GL_TEXTURE_1D, mip, internalformat,
width, 0,
size, &tmpdata[0]);
break;
case TEX_TYPE_2D:
glCompressedTexImage2DARB(GL_TEXTURE_2D, mip, internalformat,
width, height, 0,
size, &tmpdata[0]);
break;
case TEX_TYPE_2D_ARRAY:
case TEX_TYPE_3D:
glCompressedTexImage3DARB(getGLTextureTarget(), mip, internalformat,
width, height, depth, 0,
size, &tmpdata[0]);
break;
case TEX_TYPE_CUBE_MAP:
for(int face=0; face<6; face++) {
glCompressedTexImage2DARB(GL_TEXTURE_CUBE_MAP_POSITIVE_X + face, mip, internalformat,
width, height, 0,
size, &tmpdata[0]);
}
break;
case TEX_TYPE_2D_RECT:
break;
case TEX_TYPE_EXTERNAL_OES:
OGRE_EXCEPT(
Exception::ERR_RENDERINGAPI_ERROR,
"Attempt to create mipmaps for unsupported TEX_TYPE_EXTERNAL_OES, should never happen",
"GLTexture::createInternalResourcesImpl"
);
break;
};
if(width>1)
width = width/2;
if(height>1)
height = height/2;
if(depth>1 && mTextureType != TEX_TYPE_2D_ARRAY)
depth = depth/2;
}
}
else
{
// Run through this process to pregenerate mipmap pyramid
for(uint32 mip=0; mip<=mNumMipmaps; mip++)
{
// Normal formats
switch(mTextureType)
{
case TEX_TYPE_1D:
glTexImage1D(GL_TEXTURE_1D, mip, internalformat,
width, 0,
format, datatype, 0);
break;
case TEX_TYPE_2D:
glTexImage2D(GL_TEXTURE_2D, mip, internalformat,
width, height, 0,
format, datatype, 0);
break;
case TEX_TYPE_2D_ARRAY:
case TEX_TYPE_3D:
glTexImage3D(getGLTextureTarget(), mip, internalformat,
width, height, depth, 0,
format, datatype, 0);
break;
case TEX_TYPE_CUBE_MAP:
for(int face=0; face<6; face++) {
glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X + face, mip, internalformat,
width, height, 0,
format, datatype, 0);
}
break;
case TEX_TYPE_2D_RECT:
break;
case TEX_TYPE_EXTERNAL_OES:
OGRE_EXCEPT(
Exception::ERR_RENDERINGAPI_ERROR,
"Attempt to create mipmaps for unsupported TEX_TYPE_EXTERNAL_OES, should never happen",
"GLTexture::createInternalResourcesImpl"
);
break;
};
if(width>1)
width = width/2;
if(height>1)
height = height/2;
if(depth>1 && mTextureType != TEX_TYPE_2D_ARRAY)
depth = depth/2;
}
}
_createSurfaceList();
// Get final internal format
mFormat = getBuffer(0,0)->getFormat();
}
