Which is the diference between surface and texture
Author
Hi, i would like to know which is the diference between surface and texture in directx
Hey mate,
Maybe you should have a read through this:
hhttp://en.wikipedia.org/wiki/Computer_graphics#Concepts_and_principles
Let me know if you have any specific questions!
Cheers,
Bach
Maybe you should have a read through this:
hhttp://en.wikipedia.org/wiki/Computer_graphics#Concepts_and_principles
Quote:Texture mapping
Texture mapping is a method for adding detail, surface texture, or colour to a computer-generated graphic or 3D model. Its application to 3D graphics was pioneered by Dr Edwin Catmull in 1974. A texture map is applied (mapped) to the surface of a shape, or polygon.
Let me know if you have any specific questions!
Cheers,
Bach
Author
Quote:Original post by thebach
Hey mate,
Maybe you should have a read through this:
hhttp://en.wikipedia.org/wiki/Computer_graphics#Concepts_and_principlesQuote:Texture mapping
Texture mapping is a method for adding detail, surface texture, or colour to a computer-generated graphic or 3D model. Its application to 3D graphics was pioneered by Dr Edwin Catmull in 1974. A texture map is applied (mapped) to the surface of a shape, or polygon.
Let me know if you have any specific questions!
Cheers,
Bach
i don´t have it clear. So if i have a 3d model i can render it with either a surface or a texture?
3d Model: 
Texture:
A texture is used to "colour" or "texture" a 3d model or a 3d surface.
Hope it helps!
Bach
Texture:
A texture is used to "colour" or "texture" a 3d model or a 3d surface.
Hope it helps!
Bach
I think he is talking about the difference between Direct3D textures and surfaces.
Needforhint best describes it on this forum http://forums.xna.com/forums/p/15292/80148.aspx:
"texture is a c++ object allocated in system memory while surface is a member of this object, allocated in video memory,"
The MSDN library confirms this.
"A surface represents a linear area of display memory and usually resides in the display memory of the display card, although surfaces can exist in system memory.",
http://msdn.microsoft.com/en-us/library/bb219683(v=VS.85).aspx
Needforhint also states that surfaces can be locked for further operations which would bring them down to system memory.
Needforhint best describes it on this forum http://forums.xna.com/forums/p/15292/80148.aspx:
"texture is a c++ object allocated in system memory while surface is a member of this object, allocated in video memory,"
The MSDN library confirms this.
"A surface represents a linear area of display memory and usually resides in the display memory of the display card, although surfaces can exist in system memory.",
http://msdn.microsoft.com/en-us/library/bb219683(v=VS.85).aspx
Needforhint also states that surfaces can be locked for further operations which would bring them down to system memory.
Author
Quote:Original post by tariqwalji
I think he is talking about the difference between Direct3D textures and surfaces.
Needforhint best describes it on this forum http://forums.xna.com/forums/p/15292/80148.aspx:
"texture is a c++ object allocated in system memory while surface is a member of this object, allocated in video memory,"
yes i was talking about that, because i was using slimdx to convert textures between differnt dxt types but i can only do it with surfaces and not with textures, and i don´t understand why i can convert surfaces to the dxt type that i want and why i can´t do the same with textures
Quote:Original post by jor1980A texture is a collection of one or more surfaces, one for each mip level. Both surfaces and textures can be stored in system or video memory.
yes i was talking about that, because i was using slimdx to convert textures between differnt dxt types but i can only do it with surfaces and not with textures, and i don´t understand why i can convert surfaces to the dxt type that i want and why i can´t do the same with textures
If you want to convert a texture from one format to another, you need to iterate through each surface level (In C++ that's done with the GetSurfaceLevel() function, and GetDesc() to get the number of surfaces in it), and convert each surface level in turn.
This topic is closed to new replies.
Advertisement
Popular Topics
Advertisement
