void GL3PlusTexture::_createSurfaceList()
{
mSurfaceList.clear();
for (size_t face = 0; face < getNumFaces(); face++)
{
for (size_t mip = 0; mip <= getNumMipmaps(); mip++)
{
GL3PlusHardwarePixelBuffer *buf = new GL3PlusTextureBuffer(mName,
getGL3PlusTextureTarget(),
mTextureID,
face,
mip,
static_cast<HardwareBuffer::Usage>(mUsage),
mHwGamma, mFSAA);
mSurfaceList.push_back(HardwarePixelBufferSharedPtr(buf));
// Check for error
if (buf->getWidth() == 0 ||
buf->getHeight() == 0 ||
buf->getDepth() == 0)
{
OGRE_EXCEPT(
Exception::ERR_RENDERINGAPI_ERROR,
"Zero sized texture surface on texture "+getName()+
" face "+StringConverter::toString(face)+
" mipmap "+StringConverter::toString(mip)+
". The GL driver probably refused to create the texture.",
"GL3PlusTexture::_createSurfaceList");
}
}
}
}
void GL3PlusTexture::loadImpl()
{
if (mUsage & TU_RENDERTARGET)
{
createRenderTexture();
return;
}
// Now the only copy is on the stack and will be cleaned in case of
// exceptions being thrown from _loadImages
LoadedImages loadedImages = mLoadedImages;
mLoadedImages.setNull();
// Call internal _loadImages, not loadImage since that's external and
// will determine load status etc again
ConstImagePtrList imagePtrs;
for (size_t i = 0; i < loadedImages->size(); ++i)
{
imagePtrs.push_back(&(*loadedImages)[i]);
}
_loadImages(imagePtrs);
// Generate mipmaps after all texture levels have been loaded
// This is required for compressed formats such as DXT
if (mUsage & TU_AUTOMIPMAP)
{
OGRE_CHECK_GL_ERROR(glGenerateMipmap(getGL3PlusTextureTarget()));
}
}
// 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 GL3PlusTexture::createInternalResourcesImpl(void)
{
// Adjust format if required
mFormat = TextureManager::getSingleton().getNativeFormat(mTextureType, mFormat, mUsage);
// Check requested number of mipmaps
size_t maxMips = GL3PlusPixelUtil::getMaxMipmaps(mWidth, mHeight, mDepth, mFormat);
if(PixelUtil::isCompressed(mFormat) && (mNumMipmaps == 0))
mNumRequestedMipmaps = 0;
mNumMipmaps = mNumRequestedMipmaps;
if (mNumMipmaps > maxMips)
mNumMipmaps = maxMips;
// Generate texture name
OGRE_CHECK_GL_ERROR(glGenTextures(1, &mTextureID));
GLenum texTarget = getGL3PlusTextureTarget();
// Set texture type
OGRE_CHECK_GL_ERROR(glBindTexture(texTarget, mTextureID));
OGRE_CHECK_GL_ERROR(glTexParameteri(texTarget, GL_TEXTURE_BASE_LEVEL, 0));
OGRE_CHECK_GL_ERROR(glTexParameteri(texTarget, GL_TEXTURE_MAX_LEVEL, (mMipmapsHardwareGenerated && (mUsage & TU_AUTOMIPMAP)) ? maxMips : mNumMipmaps ));
// Set some misc default parameters, these can of course be changed later
OGRE_CHECK_GL_ERROR(glTexParameteri(texTarget,
GL_TEXTURE_MIN_FILTER, GL_NEAREST));
OGRE_CHECK_GL_ERROR(glTexParameteri(texTarget,
GL_TEXTURE_MAG_FILTER, GL_NEAREST));
OGRE_CHECK_GL_ERROR(glTexParameteri(texTarget,
GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE));
OGRE_CHECK_GL_ERROR(glTexParameteri(texTarget,
GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE));
// Set up texture swizzling
if(mGLSupport.checkExtension("GL_ARB_texture_swizzle") || gl3wIsSupported(3, 3))
{
OGRE_CHECK_GL_ERROR(glTexParameteri(texTarget, GL_TEXTURE_SWIZZLE_R, GL_RED));
OGRE_CHECK_GL_ERROR(glTexParameteri(texTarget, GL_TEXTURE_SWIZZLE_G, GL_GREEN));
OGRE_CHECK_GL_ERROR(glTexParameteri(texTarget, GL_TEXTURE_SWIZZLE_B, GL_BLUE));
OGRE_CHECK_GL_ERROR(glTexParameteri(texTarget, GL_TEXTURE_SWIZZLE_A, GL_ALPHA));
if(mFormat == PF_BYTE_LA)
{
OGRE_CHECK_GL_ERROR(glTexParameteri(texTarget, GL_TEXTURE_SWIZZLE_R, GL_RED));
OGRE_CHECK_GL_ERROR(glTexParameteri(texTarget, GL_TEXTURE_SWIZZLE_G, GL_RED));
OGRE_CHECK_GL_ERROR(glTexParameteri(texTarget, GL_TEXTURE_SWIZZLE_B, GL_RED));
OGRE_CHECK_GL_ERROR(glTexParameteri(texTarget, GL_TEXTURE_SWIZZLE_A, GL_GREEN));
}
else if(mFormat == PF_L8 || mFormat == PF_L16)
{
OGRE_CHECK_GL_ERROR(glTexParameteri(texTarget, GL_TEXTURE_SWIZZLE_R, GL_RED));
OGRE_CHECK_GL_ERROR(glTexParameteri(texTarget, GL_TEXTURE_SWIZZLE_G, GL_RED));
OGRE_CHECK_GL_ERROR(glTexParameteri(texTarget, GL_TEXTURE_SWIZZLE_B, GL_RED));
OGRE_CHECK_GL_ERROR(glTexParameteri(texTarget, GL_TEXTURE_SWIZZLE_A, GL_RED));
}
}
// If we can do automip generation and the user desires this, do so
mMipmapsHardwareGenerated =
Root::getSingleton().getRenderSystem()->getCapabilities()->hasCapability(RSC_AUTOMIPMAP);
// Allocate internal buffer so that glTexSubImageXD can be used
// Internal format
GLenum format = GL3PlusPixelUtil::getClosestGLInternalFormat(mFormat, mHwGamma);
GLenum datatype = GL3PlusPixelUtil::getGLOriginDataType(mFormat);
size_t width = mWidth;
size_t height = mHeight;
size_t depth = mDepth;
if (PixelUtil::isCompressed(mFormat))
{
// Compressed formats
size_t size = 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 pyramid
uint8* tmpdata = new uint8[size];
memset(tmpdata, 0, size);
for (size_t mip = 0; mip <= mNumMipmaps; mip++)
{
size = PixelUtil::getMemorySize(width, height, depth, mFormat);
switch(mTextureType)
{
case TEX_TYPE_1D:
OGRE_CHECK_GL_ERROR(glCompressedTexImage1D(GL_TEXTURE_1D, mip, format,
width, 0,
size, tmpdata));
break;
case TEX_TYPE_2D:
OGRE_CHECK_GL_ERROR(glCompressedTexImage2D(GL_TEXTURE_2D,
mip,
format,
width, height,
0,
size,
tmpdata));
break;
case TEX_TYPE_2D_RECT:
OGRE_CHECK_GL_ERROR(glCompressedTexImage2D(GL_TEXTURE_RECTANGLE,
mip,
format,
width, height,
0,
size,
tmpdata));
break;
case TEX_TYPE_2D_ARRAY:
case TEX_TYPE_3D:
OGRE_CHECK_GL_ERROR(glCompressedTexImage3D(texTarget, mip, format,
width, height, depth, 0,
size, tmpdata));
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, tmpdata));
}
break;
default:
break;
};
// LogManager::getSingleton().logMessage("GL3PlusTexture::create - " + StringConverter::toString(mTextureID) +
// " Mip: " + StringConverter::toString(mip) +
// " Width: " + StringConverter::toString(width) +
// " Height: " + StringConverter::toString(height) +
// " Internal Format: " + StringConverter::toString(format)
// );
if(width > 1)
{
width = width / 2;
}
if(height > 1)
{
height = height / 2;
}
if(depth > 1)
{
depth = depth / 2;
}
}
delete [] tmpdata;
}
else
{
if((mGLSupport.checkExtension("GL_ARB_texture_storage") || gl3wIsSupported(4, 2)) && mTextureType == TEX_TYPE_2D)
{
OGRE_CHECK_GL_ERROR(glTexStorage2D(GL_TEXTURE_2D, GLint(mNumMipmaps+1), format, GLsizei(width), GLsizei(height)));
}
else
{
// Run through this process to pregenerate mipmap pyramid
for(size_t mip = 0; mip <= mNumMipmaps; mip++)
{
// Normal formats
switch(mTextureType)
{
case TEX_TYPE_1D:
OGRE_CHECK_GL_ERROR(glTexImage1D(GL_TEXTURE_1D, mip, format,
width, 0,
GL_RGBA, datatype, 0));
break;
case TEX_TYPE_2D:
OGRE_CHECK_GL_ERROR(glTexImage2D(GL_TEXTURE_2D,
mip,
format,
width, height,
0,
GL3PlusPixelUtil::getGLOriginFormat(mFormat),
datatype, 0));
break;
case TEX_TYPE_2D_RECT:
OGRE_CHECK_GL_ERROR(glTexImage2D(GL_TEXTURE_RECTANGLE,
mip,
format,
width, height,
0,
GL3PlusPixelUtil::getGLOriginFormat(mFormat),
datatype, 0));
break;
case TEX_TYPE_3D:
case TEX_TYPE_2D_ARRAY:
OGRE_CHECK_GL_ERROR(glTexImage3D(texTarget, mip, format,
width, height, depth, 0,
GL_RGBA, datatype, 0));
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,
GL3PlusPixelUtil::getGLOriginFormat(mFormat), datatype, 0));
}
break;
default:
break;
};
if (width > 1)
{
width = width / 2;
}
if (height > 1)
{
height = height / 2;
}
if (depth > 1)
{
depth = depth / 2;
}
}
}
}
_createSurfaceList();
// Get final internal format
mFormat = getBuffer(0,0)->getFormat();
}
