FGFS-4.1/OpenSceneGraph
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Added Texuture::SubloadCallback example into the osgprerender demo to illustrate

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how to use it.

Changed the ImpostorSprite to use LINEAR,LINEAR for min and mag filters for the
impostor texture.
This commit is contained in:
Robert Osfield
2002-08-16 15:14:43 +00:00
parent 7dfefaf67f
commit 2ab0f689eb
4 changed files with 145 additions and 38 deletions
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8
include/osg/Image
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@@ -105,12 +105,18 @@ class SG_EXPORT Image : public Object
inline const unsigned char *data() const { return _data; }
unsigned char* data(int column, int row=0,int image=0)
inline unsigned char* data(int column, int row=0,int image=0)
{
if (!_data) return NULL;
return _data+(column*getPixelSizeInBits())/8+row*getRowSizeInBytes()+image*getImageSizeInBytes();
}
inline const unsigned char* data(int column, int row=0,int image=0) const
{
if (!_data) return NULL;
return _data+(column*getPixelSizeInBits())/8+row*getRowSizeInBytes()+image*getImageSizeInBytes();
}
/** Flip the image horizontally.*/
void flipHorizontal(int image=0);

38
include/osg/Texture
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@@ -245,7 +245,7 @@ class SG_EXPORT Texture : public StateAttribute
/** 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 setSubloadTextureSize(const int width, const int height)
inline void setSubloadTextureSize(const int width, const int height) const
{
_textureWidth = width;
_textureHeight = height;
@@ -288,6 +288,21 @@ class SG_EXPORT Texture : public StateAttribute
height = _subloadImageHeight;
}
class SubloadCallback : public Referenced
{
public:
virtual void load(GLenum target, const Texture& texture,State& state) const = 0;
virtual void subload(GLenum target, const Texture& texture,State& state) const = 0;
};
void setSubloadCallback(SubloadCallback* cb) { _subloadCallback = cb; _subloadMode = cb ? USE_CALLBACK:OFF; }
SubloadCallback* getSubloadCallback() { return _subloadCallback.get(); }
const SubloadCallback* getSubloadCallback() const { return _subloadCallback.get(); }
/** Get the handle to the texture object for the current context.*/
/** return the OpenGL texture object for specified context.*/
inline GLuint& getTextureObject(const uint contextID) const
@@ -321,26 +336,15 @@ class SG_EXPORT Texture : public StateAttribute
virtual void compile(State& state) const;
/** Get the number of mip map levels the the texture has been created with,*/
/** Set the number of mip map levels the the texture has been created with,
should only be called within an osg::Texuture::apply() and custom OpenGL texture load.*/
void setNumMipmapLevels(unsigned int num) const { _numMimpmapLevels=num; }
/** Get the number of mip map levels the the texture has been created with.*/
unsigned int getNumMipmapLevels() const { return _numMimpmapLevels; }
class SubloadCallback : public Referenced
{
public:
virtual void load(GLenum target, const Texture& texture,State& state) const;
virtual void subload(GLenum target, const Texture& texture,State& state) const;
};
void setSubloadCallback(SubloadCallback* cb) { _subloadCallback = cb; _subloadMode = cb ? USE_CALLBACK:OFF; }
SubloadCallback* getSubloadCallback() { return _subloadCallback.get(); }
const SubloadCallback* getSubloadCallback() const { return _subloadCallback.get(); }
/** use deleteTextureObject instead of glDeleteTextures to allow
* OpenGL texture objects to cached until they can be deleted
* by the OpenGL context in which they were created, specified