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nv50: actually enable view volume clipping 

Until now, only primitives wholly outside the view volume
were not drawn.
This was only visibile when using a viewport smaller than
the window size, naturally.
This commit is contained in:
Christoph Bumiller 2009-09-24 17:37:08 +02:00
parent 001daf78c8
commit 513cadf5af
1 changed files with 10 additions and 1 deletions
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11
src/gallium/drivers/nv50/nv50_state_validate.c
View File

@ -312,7 +312,7 @@ scissor_uptodate:
goto viewport_uptodate;
nv50->state.viewport_bypass = bypass;
so = so_new(12, 0);
so = so_new(14, 0);
if (!bypass) {
so_method(so, tesla, NV50TCL_VIEWPORT_TRANSLATE(0), 3);
so_data (so, fui(nv50->viewport.translate[0]));
@ -325,12 +325,21 @@ scissor_uptodate:
so_method(so, tesla, NV50TCL_VIEWPORT_TRANSFORM_EN, 1);
so_data (so, 1);
/* 0x0000 = remove whole primitive only (xyz)
* 0x1018 = remove whole primitive only (xy), clamp z
* 0x1080 = clip primitive (xyz)
* 0x1098 = clip primitive (xy), clamp z
*/
so_method(so, tesla, NV50TCL_VIEW_VOLUME_CLIP_CTRL, 1);
so_data (so, 0x1080);
/* no idea what 0f90 does */
so_method(so, tesla, 0x0f90, 1);
so_data (so, 0);
} else {
so_method(so, tesla, NV50TCL_VIEWPORT_TRANSFORM_EN, 1);
so_data (so, 0);
so_method(so, tesla, NV50TCL_VIEW_VOLUME_CLIP_CTRL, 1);
so_data (so, 0x0000);
so_method(so, tesla, 0x0f90, 1);
so_data (so, 1);
}