static void
svga_set_polygon_stipple(struct pipe_context *pipe,
const struct pipe_poly_stipple *stipple)
{
struct svga_context *svga = svga_context(pipe);
/* release old texture */
pipe_resource_reference(&svga->polygon_stipple.texture, NULL);
/* release old sampler view */
if (svga->polygon_stipple.sampler_view) {
pipe->sampler_view_destroy(pipe,
&svga->polygon_stipple.sampler_view->base);
}
/* create new stipple texture */
svga->polygon_stipple.texture =
util_pstipple_create_stipple_texture(pipe, stipple->stipple);
/* create new sampler view */
svga->polygon_stipple.sampler_view =
(struct svga_pipe_sampler_view *)
util_pstipple_create_sampler_view(pipe,
svga->polygon_stipple.texture);
/* allocate sampler state, if first time */
if (!svga->polygon_stipple.sampler) {
svga->polygon_stipple.sampler = util_pstipple_create_sampler(pipe);
}
svga->dirty |= SVGA_NEW_STIPPLE;
}
/**
* Called by drivers that want to install this polygon stipple stage
* into the draw module's pipeline. This will not be used if the
* hardware has native support for polygon stipple.
*/
boolean
draw_install_pstipple_stage(struct draw_context *draw,
struct pipe_context *pipe)
{
struct pstip_stage *pstip;
pipe->draw = (void *) draw;
/*
* Create / install pgon stipple drawing / prim stage
*/
pstip = draw_pstip_stage( draw, pipe );
if (!pstip)
goto fail;
draw->pipeline.pstipple = &pstip->stage;
/* save original driver functions */
pstip->driver_create_fs_state = pipe->create_fs_state;
pstip->driver_bind_fs_state = pipe->bind_fs_state;
pstip->driver_delete_fs_state = pipe->delete_fs_state;
pstip->driver_bind_sampler_states = pipe->bind_sampler_states;
pstip->driver_set_sampler_views = pipe->set_sampler_views;
pstip->driver_set_polygon_stipple = pipe->set_polygon_stipple;
/* create special texture, sampler state */
pstip->texture = util_pstipple_create_stipple_texture(pipe, NULL);
if (!pstip->texture)
goto fail;
pstip->sampler_view = util_pstipple_create_sampler_view(pipe,
pstip->texture);
if (!pstip->sampler_view)
goto fail;
pstip->sampler_cso = util_pstipple_create_sampler(pipe);
if (!pstip->sampler_cso)
goto fail;
/* override the driver's functions */
pipe->create_fs_state = pstip_create_fs_state;
pipe->bind_fs_state = pstip_bind_fs_state;
pipe->delete_fs_state = pstip_delete_fs_state;
pipe->bind_sampler_states = pstip_bind_sampler_states;
pipe->set_sampler_views = pstip_set_sampler_views;
pipe->set_polygon_stipple = pstip_set_polygon_stipple;
return TRUE;
fail:
if (pstip)
pstip->stage.destroy( &pstip->stage );
return FALSE;
}
/**
* This should be called when the polygon stipple pattern changes.
* We create a new texture from the stipple pattern and create a new
* sampler view.
*/
static void
update_polygon_stipple_pattern(struct softpipe_context *softpipe)
{
struct pipe_resource *tex;
struct pipe_sampler_view *view;
tex = util_pstipple_create_stipple_texture(&softpipe->pipe,
softpipe->poly_stipple.stipple);
pipe_resource_reference(&softpipe->pstipple.texture, tex);
pipe_resource_reference(&tex, NULL);
view = util_pstipple_create_sampler_view(&softpipe->pipe,
softpipe->pstipple.texture);
pipe_sampler_view_reference(&softpipe->pstipple.sampler_view, view);
pipe_sampler_view_reference(&view, NULL);
}
