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improve comments about win[0..3] values (bug 2554)

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Brian Paul 2005-07-26 01:04:53 +00:00
parent 800c72ae61
commit 1201348a33
1 changed files with 5 additions and 2 deletions
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7
src/mesa/swrast/swrast.h
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@ -61,8 +61,11 @@
* primitives unaccelerated), hook in swrast_setup instead.
*/
typedef struct {
/** win[0], win[1] are the screen-coords of SWvertex. win[2] is the
* z-coord. what is win[3]? */
/** win[0], win[1] are the screen-coords of SWvertex.
* win[2] is the z-buffer coord (if 16-bit Z buffer, in range [0,65535]).
* win[3] is 1/w where w is the clip-space W coord. This is the value
* that clip{XYZ} were multiplied by to get ndc{XYZ}.
*/
GLfloat win[4];
GLfloat texcoord[MAX_TEXTURE_COORD_UNITS][4];
GLchan color[4];