FGFS-4.1/OpenSceneGraph
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Added support for using the generate mip map extension within osgText.

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This commit is contained in:
Robert Osfield
2003-03-04 15:47:28 +00:00
parent 925cd28f16
commit 55c25a551b
3 changed files with 51 additions and 9 deletions
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14
src/osg/Texture.cpp
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@@ -518,12 +518,12 @@ Texture::Extensions::Extensions(const Extensions& rhs):
Referenced()
{
_isTextureFilterAnisotropicSupported = rhs._isTextureFilterAnisotropicSupported;
_isTextureCompressionARBSupported = rhs._isTextureCompressionARBSupported;
_isTextureCompressionS3TCSupported = rhs._isTextureCompressionS3TCSupported;
_isTextureMirroredRepeatSupported = rhs._isTextureMirroredRepeatSupported;
_isTextureEdgeClampSupported = rhs._isTextureEdgeClampSupported;
_isTextureBorderClampSupported = rhs._isTextureBorderClampSupported;
_isTextureCompressionARBSupported = rhs._isTextureCompressionARBSupported;
_isTextureCompressionS3TCSupported = rhs._isTextureCompressionS3TCSupported;
_isGenerateMipMapSupported = rhs._isGenerateMipMapSupported;
_maxTextureSize = rhs._maxTextureSize;
@@ -539,6 +539,8 @@ void Texture::Extensions::lowestCommonDenominator(const Extensions& rhs)
if (!rhs._isTextureCompressionARBSupported) _isTextureCompressionARBSupported = false;
if (!rhs._isTextureCompressionS3TCSupported) _isTextureCompressionS3TCSupported = false;
if (!rhs._isGenerateMipMapSupported) _isGenerateMipMapSupported = false;
if (rhs._maxTextureSize<_maxTextureSize) _maxTextureSize = rhs._maxTextureSize;
@@ -549,12 +551,14 @@ void Texture::Extensions::setupGLExtenions()
{
_isTextureFilterAnisotropicSupported = isGLExtensionSupported("GL_EXT_texture_filter_anisotropic");
_isTextureCompressionARBSupported = isGLExtensionSupported("GL_ARB_texture_compression");
_isTextureCompressionS3TCSupported = isGLExtensionSupported("GL_EXT_texture_compression_s3tc");
_isTextureMirroredRepeatSupported = isGLExtensionSupported("GL_IBM_texture_mirrored_repeat");
_isTextureEdgeClampSupported = isGLExtensionSupported("GL_EXT_texture_edge_clamp");
_isTextureBorderClampSupported = isGLExtensionSupported("GL_ARB_texture_border_clamp");
_isGenerateMipMapSupported = (strncmp((const char*)glGetString(GL_VERSION),"1.4",3)>=0) ||
isGLExtensionSupported("GL_SGIS_generate_mipmap");
_isTextureCompressionARBSupported = isGLExtensionSupported("GL_ARB_texture_compression");
_isTextureCompressionS3TCSupported = isGLExtensionSupported("GL_EXT_texture_compression_s3tc");
glGetIntegerv(GL_MAX_TEXTURE_SIZE,&_maxTextureSize);