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svga: emit user-defined clip plane state

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User-defined clip planes were a swtnl fallback before.
This commit is contained in:
Brian Paul 2011-04-25 10:26:19 -06:00
parent 33afdf8356
commit 0be6ae74e9
3 changed files with 26 additions and 11 deletions
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23
src/gallium/drivers/svga/svga_state_framebuffer.c
View file

@ -474,9 +474,26 @@ static int emit_clip_planes( struct svga_context *svga,
/* TODO: just emit directly from svga_set_clip_state()?
*/
for (i = 0; i < svga->curr.clip.nr; i++) {
ret = SVGA3D_SetClipPlane( svga->swc,
i,
svga->curr.clip.ucp[i] );
/* need to express the plane in D3D-style coordinate space.
* GL coords get converted to D3D coords with the matrix:
* [ 1 0 0 0 ]
* [ 0 -1 0 0 ]
* [ 0 0 2 0 ]
* [ 0 0 -1 1 ]
* Apply that matrix to our plane equation, and invert Y.
*/
float a = svga->curr.clip.ucp[i][0];
float b = svga->curr.clip.ucp[i][1];
float c = svga->curr.clip.ucp[i][2];
float d = svga->curr.clip.ucp[i][3];
float plane[4];
plane[0] = a;
plane[1] = b;
plane[2] = 2.0f * c;
plane[3] = d - c;
ret = SVGA3D_SetClipPlane(svga->swc, i, plane);
if(ret != PIPE_OK)
return ret;
}

8
src/gallium/drivers/svga/svga_state_need_swtnl.c
View file

@ -139,13 +139,6 @@ static int update_need_pipeline( struct svga_context *svga,
need_pipeline = TRUE;
}
/* SVGA_NEW_CLIP
*/
if (svga->curr.clip.nr) {
SVGA_DBG(DEBUG_SWTNL, "%s: userclip\n", __FUNCTION__);
need_pipeline = TRUE;
}
if (need_pipeline != svga->state.sw.need_pipeline) {
svga->state.sw.need_pipeline = need_pipeline;
svga->dirty |= SVGA_NEW_NEED_PIPELINE;
@ -163,7 +156,6 @@ struct svga_tracked_state svga_update_need_pipeline =
{
"need pipeline",
(SVGA_NEW_RAST |
SVGA_NEW_CLIP |
SVGA_NEW_VS |
SVGA_NEW_REDUCED_PRIMITIVE),
update_need_pipeline

6
src/gallium/drivers/svga/svga_state_rss.c
View file

@ -240,6 +240,11 @@ static int emit_rss( struct svga_context *svga,
EMIT_RS_FLOAT( svga, bias, DEPTHBIAS, fail );
}
if (dirty & SVGA_NEW_CLIP) {
/* the number of clip planes is how many planes to enable */
unsigned enabled = (1 << svga->curr.clip.nr) - 1;
EMIT_RS( svga, enabled, CLIPPLANEENABLE, fail );
}
if (queue.rs_count) {
SVGA3dRenderState *rs;
@ -276,6 +281,7 @@ struct svga_tracked_state svga_hw_rss =
(SVGA_NEW_BLEND |
SVGA_NEW_BLEND_COLOR |
SVGA_NEW_CLIP |
SVGA_NEW_DEPTH_STENCIL |
SVGA_NEW_STENCIL_REF |
SVGA_NEW_RAST |