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add MinLOD MaxLOD and LODBias to Texture

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This commit is contained in:
Julien Valentin
2018-01-13 21:16:16 +01:00
parent ae57f3cd46
commit d2b8468bf4
2 changed files with 64 additions and 1 deletions
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44
src/osg/Texture.cpp
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@@ -1228,6 +1228,9 @@ Texture::Texture():
_min_filter(LINEAR_MIPMAP_LINEAR), // trilinear
_mag_filter(LINEAR),
_maxAnisotropy(1.0f),
_minlod(0.0f),
_maxlod(-1.0f),
_lodbias(0.0f),
_swizzle(GL_RED, GL_GREEN, GL_BLUE, GL_ALPHA),
_useHardwareMipMapGeneration(true),
_unrefImageDataAfterApply(false),
@@ -1255,6 +1258,9 @@ Texture::Texture(const Texture& text,const CopyOp& copyop):
_min_filter(text._min_filter),
_mag_filter(text._mag_filter),
_maxAnisotropy(text._maxAnisotropy),
_minlod(text._minlod),
_maxlod(text._maxlod),
_lodbias(text._lodbias),
_swizzle(text._swizzle),
_useHardwareMipMapGeneration(text._useHardwareMipMapGeneration),
_unrefImageDataAfterApply(text._unrefImageDataAfterApply),
@@ -1288,6 +1294,9 @@ int Texture::compareTexture(const Texture& rhs) const
COMPARE_StateAttribute_Parameter(_min_filter)
COMPARE_StateAttribute_Parameter(_mag_filter)
COMPARE_StateAttribute_Parameter(_maxAnisotropy)
COMPARE_StateAttribute_Parameter(_minlod)
COMPARE_StateAttribute_Parameter(_maxlod)
COMPARE_StateAttribute_Parameter(_lodbias)
COMPARE_StateAttribute_Parameter(_swizzle)
COMPARE_StateAttribute_Parameter(_useHardwareMipMapGeneration)
COMPARE_StateAttribute_Parameter(_internalFormatMode)
@@ -1336,7 +1345,6 @@ void Texture::setWrap(WrapParameter which, WrapMode wrap)
case WRAP_R : _wrap_r = wrap; dirtyTextureParameters(); break;
default : OSG_WARN<<"Error: invalid 'which' passed Texture::setWrap("<<(unsigned int)which<<","<<(unsigned int)wrap<<")"<<std::endl; break;
}
}
@@ -1382,6 +1390,32 @@ void Texture::setMaxAnisotropy(float anis)
}
}
void Texture::setMinLOD(float anis)
{
if (_minlod!=anis)
{
_minlod = anis;
dirtyTextureParameters();
}
}
void Texture::setMaxLOD(float anis)
{
if (_maxlod!=anis)
{
_maxlod = anis;
dirtyTextureParameters();
}
}
void Texture::setLODBias(float anis)
{
if (_lodbias!=anis)
{
_lodbias = anis;
dirtyTextureParameters();
}
}
/** Force a recompile on next apply() of associated OpenGL texture objects.*/
void Texture::dirtyTextureObject()
@@ -1984,6 +2018,14 @@ void Texture::applyTexParameters(GLenum target, State& state) const
glTexParameteri(target, GL_TEXTURE_COMPARE_MODE_ARB, GL_NONE);
}
}
// if range is valid
if( _maxlod - _minlod >= 0)
{
glTexParameterf(target, GL_TEXTURE_MIN_LOD, _minlod);
glTexParameterf(target, GL_TEXTURE_MAX_LOD, _maxlod);
}
glTexParameterf(target, GL_TEXTURE_LOD_BIAS, _lodbias);
getTextureParameterDirty(state.getContextID()) = false;