FGFS-4.1/OpenSceneGraph
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Added support for setting the texture subload width and height within

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osg::Texture.  The values default to 0, and in this state they are
sizes of the glTexSubImage2D are taken from the source image size.  This
allows the previous setup with no settings for subload size to work as
before.
This commit is contained in:
Robert Osfield
2002-03-27 22:51:58 +00:00
parent 7e2c82f141
commit 33c89c3be0
4 changed files with 44 additions and 8 deletions
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20
include/osg/Texture
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@@ -99,7 +99,9 @@ class SG_EXPORT Texture : public StateAttribute
_textureHeight(text._textureHeight),
_subloadMode(text._subloadMode),
_subloadOffsX(text._subloadOffsX),
_subloadOffsY(text._subloadOffsY) {}
_subloadOffsY(text._subloadOffsY),
_subloadWidth(text._subloadWidth),
_subloadHeight(text._subloadHeight) {}
META_StateAttribute(Texture,(Type)(TEXTURE_0+_textureUnit));
@@ -260,6 +262,19 @@ class SG_EXPORT Texture : public StateAttribute
y = _subloadOffsY;
}
/** Set the texture subload width. If width or height are zero then
* the repsective size value is calculated from the source image sizes. */
inline void setSubloadSize(const int width, const int height) {
_subloadWidth = width;
_subloadHeight = height;
}
/** Get the texture subload width. */
inline void getSubloadSize(int& width, int& height) const {
width = _subloadWidth;
height = _subloadHeight;
}
/** Get the handle to the texture object for the current context.*/
inline GLuint& getHandle(const uint contextID) const
{
@@ -358,7 +373,8 @@ class SG_EXPORT Texture : public StateAttribute
mutable unsigned int _textureWidth, _textureHeight;
SubloadMode _subloadMode;
unsigned int _subloadOffsX, _subloadOffsY;
unsigned GLint _subloadOffsX, _subloadOffsY;
unsigned GLsizei _subloadWidth, _subloadHeight;
// static cache of deleted display lists which can only
// by completely deleted once the appropriate OpenGL context