static void
aaline_flush(struct draw_stage *stage, unsigned flags)
{
struct draw_context *draw = stage->draw;
struct aaline_stage *aaline = aaline_stage(stage);
struct pipe_context *pipe = draw->pipe;
stage->line = aaline_first_line;
stage->next->flush( stage->next, flags );
/* restore original frag shader, texture, sampler state */
draw->suspend_flushing = TRUE;
aaline->driver_bind_fs_state(pipe, aaline->fs->driver_fs);
aaline->driver_bind_sampler_states(pipe, aaline->num_samplers,
aaline->state.sampler);
aaline->driver_set_sampler_views(pipe,
aaline->num_sampler_views,
aaline->state.sampler_views);
/* restore original rasterizer state */
if (draw->rast_handle) {
pipe->bind_rasterizer_state(pipe, draw->rast_handle);
}
draw->suspend_flushing = FALSE;
draw_remove_extra_vertex_attribs(draw);
}
/**
* 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);
}
static void widepoint_flush( struct draw_stage *stage, unsigned flags )
{
struct draw_context *draw = stage->draw;
struct pipe_context *pipe = draw->pipe;
stage->point = widepoint_first_point;
stage->next->flush( stage->next, flags );
draw_remove_extra_vertex_attribs(draw);
/* restore original rasterizer state */
if (draw->rast_handle) {
draw->suspend_flushing = TRUE;
pipe->bind_rasterizer_state(pipe, draw->rast_handle);
draw->suspend_flushing = FALSE;
}
}
static void
aapoint_flush(struct draw_stage *stage, unsigned flags)
{
struct draw_context *draw = stage->draw;
struct aapoint_stage *aapoint = aapoint_stage(stage);
struct pipe_context *pipe = draw->pipe;
stage->point = aapoint_first_point;
stage->next->flush( stage->next, flags );
/* restore original frag shader */
draw->suspend_flushing = TRUE;
aapoint->driver_bind_fs_state(pipe, aapoint->fs ? aapoint->fs->driver_fs : NULL);
/* restore original rasterizer state */
if (draw->rast_handle) {
pipe->bind_rasterizer_state(pipe, draw->rast_handle);
}
draw->suspend_flushing = FALSE;
draw_remove_extra_vertex_attribs(draw);
}
static void
widepoint_first_point(struct draw_stage *stage,
struct prim_header *header)
{
struct widepoint_stage *wide = widepoint_stage(stage);
struct draw_context *draw = stage->draw;
struct pipe_context *pipe = draw->pipe;
const struct pipe_rasterizer_state *rast = draw->rasterizer;
void *r;
wide->half_point_size = 0.5f * rast->point_size;
wide->xbias = 0.0;
wide->ybias = 0.0;
if (rast->half_pixel_center) {
wide->xbias = 0.125;
wide->ybias = -0.125;
}
/* Disable triangle culling, stippling, unfilled mode etc. */
r = draw_get_rasterizer_no_cull(draw, rast->scissor, rast->flatshade);
draw->suspend_flushing = TRUE;
pipe->bind_rasterizer_state(pipe, r);
draw->suspend_flushing = FALSE;
/* XXX we won't know the real size if it's computed by the vertex shader! */
if ((rast->point_size > draw->pipeline.wide_point_threshold) ||
(rast->point_quad_rasterization && draw->pipeline.point_sprite)) {
stage->point = widepoint_point;
}
else {
stage->point = draw_pipe_passthrough_point;
}
draw_remove_extra_vertex_attribs(draw);
if (rast->point_quad_rasterization) {
const struct draw_fragment_shader *fs = draw->fs.fragment_shader;
uint i;
assert(fs);
wide->num_texcoord_gen = 0;
/* Loop over fragment shader inputs looking for the PCOORD input or inputs
* for which bit 'k' in sprite_coord_enable is set.
*/
for (i = 0; i < fs->info.num_inputs; i++) {
int slot;
const unsigned sn = fs->info.input_semantic_name[i];
const unsigned si = fs->info.input_semantic_index[i];
if (sn == wide->sprite_coord_semantic) {
/* Note that sprite_coord_enable is a bitfield of 32 bits. */
if (si >= 32 || !(rast->sprite_coord_enable & (1 << si)))
continue;
} else if (sn != TGSI_SEMANTIC_PCOORD) {
continue;
}
/* OK, this generic attribute needs to be replaced with a
* sprite coord (see above).
*/
slot = draw_alloc_extra_vertex_attrib(draw, sn, si);
/* add this slot to the texcoord-gen list */
wide->texcoord_gen_slot[wide->num_texcoord_gen++] = slot;
}
}
wide->psize_slot = -1;
if (rast->point_size_per_vertex) {
/* find PSIZ vertex output */
const struct draw_vertex_shader *vs = draw->vs.vertex_shader;
uint i;
for (i = 0; i < vs->info.num_outputs; i++) {
if (vs->info.output_semantic_name[i] == TGSI_SEMANTIC_PSIZE) {
wide->psize_slot = i;
break;
}
}
}
stage->point( stage, header );
}
