diff options
Diffstat (limited to 'src/mesa/swrast/swrast.h')
| -rw-r--r-- | src/mesa/swrast/swrast.h | 24 |
1 files changed, 13 insertions, 11 deletions
diff --git a/src/mesa/swrast/swrast.h b/src/mesa/swrast/swrast.h index 9e1fe24bb40..d101a9e2ae2 100644 --- a/src/mesa/swrast/swrast.h +++ b/src/mesa/swrast/swrast.h @@ -45,6 +45,14 @@ * improve its usefulness as a fallback mechanism for hardware * drivers. * + * wpos = attr[FRAG_ATTRIB_WPOS] and MUST BE THE FIRST values in the + * vertex because of the tnl clipping code. + + * wpos[0] and [1] are the screen-coords of SWvertex. + * wpos[2] is the z-buffer coord (if 16-bit Z buffer, in range [0,65535]). + * wpos[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}. + * * Full software drivers: * - Register the rastersetup and triangle functions from * utils/software_helper. @@ -61,21 +69,15 @@ * primitives unaccelerated), hook in swrast_setup instead. */ typedef struct { - /** 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]; - GLchan color[4]; - GLchan specular[4]; - GLfloat fog; - GLfloat index; + GLfloat attrib[FRAG_ATTRIB_MAX][4]; + GLchan color[4]; /** integer color */ GLfloat pointSize; - GLfloat attrib[FRAG_ATTRIB_MAX][4]; /**< texcoords & varying, more to come */ } SWvertex; +#define FRAG_ATTRIB_CI FRAG_ATTRIB_COL0 + + struct swrast_device_driver; |