On Wed, Jan 21, 2004 at 12:23:17AM +0200, Ville Syrjälä wrote:On Tue, Jan 20, 2004 at 03:47:49PM -0600, Ryan Underwood wrote:
GL_ATI_envmap_bumpmap seems to describe identical functionality to DirectX6 EMBM. ATI's drivers support this extension and it is implemented in Mesa apparently. Does anyone know of a demo or sample code that utilizes this extension?
Last time I looked Mesa didn't support this extension. My plan was to add bumpmap support to the mga driver if/when someone added the relevant Mesa bits...
You're right, I was looking only at glext.h. My intent was to implement it to the mga driver too because it is sort of a unique functionality that can create some nice eye candy. A secondary intent was to implement DX6 EMBM in WINE and pass it through to this extension if available. That way you could run DX6+ games that utilize EMBM in WINE.
Does that extension really provide all of DX6 EMBM? I seem to recall there being that modified the texture coordinates AND had an intensity (or is it luminosity?) value. The ATI extension doesn't have that. It could be simulated on ATI hardware by using an extra texture blend stage.
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