Newer posts are loading.
You are at the newest post.
Click here to check if anything new just came in.
Click here to check if anything new just came in.
July 24 2010
http://developer.download.nvidia.com/opengl/specs/GL_ARB_texture_swizzle.txt
Classic OpenGL texture formats conflate texture storage and interpretation, and assume that textures represent color. In modern applications, a significant quantity of textures don't represent color, but rather data like shadow maps, normal maps, page tables, occlusion data, etc.. For the latter class of data, calling the data "RGBA" is just a convenient mapping of what the data is onto the current model, but isn't an accurate reflection of the reality of the data.The existing texture formats provide an almost orthogonal set of data types, sizes, and number of components, but the mappings of this storage into what the shader or fixed-function pipeline fetches is very much non-orthogonal.
This extension provides a mechanism to swizzle the components of a texture before they are applied according to the texture environment in fixed-function or as they are returned to the shader.
http://developer.download.nvidia.com/opengl/specs/GL_ARB_texture_swizzle.txt
Classic OpenGL texture formats conflate texture storage and interpretation, and assume that textures represent color. In modern applications, a significant quantity of textures don't represent color, but rather data like shadow maps, normal maps, page tables, occlusion data, etc.. For the latter class of data, calling the data "RGBA" is just a convenient mapping of what the data is onto the current model, but isn't an accurate reflection of the reality of the data.The existing texture formats provide an almost orthogonal set of data types, sizes, and number of components, but the mappings of this storage into what the shader or fixed-function pipeline fetches is very much non-orthogonal.
This extension provides a mechanism to swizzle the components of a texture before they are applied according to the texture environment in fixed-function or as they are returned to the shader.
Older posts are this way
If this message doesn't go away, click anywhere on the page to continue loading posts.
Could not load more posts
Maybe Soup is currently being updated? I'll try again automatically in a few seconds...
Maybe Soup is currently being updated? I'll try again automatically in a few seconds...
Just a second, loading more posts...
You've reached the end.
