static void
aapoint_first_point(struct draw_stage *stage, struct prim_header *header)
{
auto struct aapoint_stage *aapoint = aapoint_stage(stage);
struct draw_context *draw = stage->draw;
struct pipe_context *pipe = draw->pipe;
const struct pipe_rasterizer_state *rast = draw->rasterizer;
void *r;
assert(draw->rasterizer->point_smooth);
if (draw->rasterizer->point_size <= 2.0)
aapoint->radius = 1.0;
else
aapoint->radius = 0.5f * draw->rasterizer->point_size;
/*
* Bind (generate) our fragprog.
*/
bind_aapoint_fragment_shader(aapoint);
draw_aapoint_prepare_outputs(draw, draw->pipeline.aapoint);
draw->suspend_flushing = TRUE;
/* Disable triangle culling, stippling, unfilled mode etc. */
r = draw_get_rasterizer_no_cull(draw, rast->scissor, rast->flatshade);
pipe->bind_rasterizer_state(pipe, r);
draw->suspend_flushing = FALSE;
/* now really draw first point */
stage->point = aapoint_point;
stage->point(stage, header);
}
/**
* Prepare outputs slots from the draw module
*
* Certain parts of the draw module can emit additional
* outputs that can be quite useful to the backends, a good
* example of it is the process of decomposing primitives
* into wireframes (aka. lines) which normally would lose
* the face-side information, but using this method we can
* inject another shader output which passes the original
* face side information to the backend.
*/
void
draw_prepare_shader_outputs(struct draw_context *draw)
{
draw_remove_extra_vertex_attribs(draw);
draw_prim_assembler_prepare_outputs(draw->ia);
draw_unfilled_prepare_outputs(draw, draw->pipeline.unfilled);
if (draw->pipeline.aapoint)
draw_aapoint_prepare_outputs(draw, draw->pipeline.aapoint);
if (draw->pipeline.aaline)
draw_aaline_prepare_outputs(draw, draw->pipeline.aaline);
}