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path: root/lib/mesa/src/gallium/auxiliary/draw/draw_pipe_cull.c
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Diffstat (limited to 'lib/mesa/src/gallium/auxiliary/draw/draw_pipe_cull.c')
-rw-r--r--lib/mesa/src/gallium/auxiliary/draw/draw_pipe_cull.c131
1 files changed, 3 insertions, 128 deletions
diff --git a/lib/mesa/src/gallium/auxiliary/draw/draw_pipe_cull.c b/lib/mesa/src/gallium/auxiliary/draw/draw_pipe_cull.c
index 318d743db..a873edbe7 100644
--- a/lib/mesa/src/gallium/auxiliary/draw/draw_pipe_cull.c
+++ b/lib/mesa/src/gallium/auxiliary/draw/draw_pipe_cull.c
@@ -51,105 +51,12 @@ static inline struct cull_stage *cull_stage( struct draw_stage *stage )
return (struct cull_stage *)stage;
}
-static inline boolean
-cull_distance_is_out(float dist)
-{
- return (dist < 0.0f) || util_is_inf_or_nan(dist);
-}
-
/*
- * If the shader writes the culldistance then we can
- * perform distance based culling. Distance based
- * culling doesn't require a face and can be performed
- * on primitives without faces (e.g. points and lines)
- */
-static void cull_point( struct draw_stage *stage,
- struct prim_header *header )
-{
- const unsigned num_written_culldistances =
- draw_current_shader_num_written_culldistances(stage->draw);
- const unsigned num_written_clipdistances =
- draw_current_shader_num_written_clipdistances(stage->draw);
- unsigned i;
-
- debug_assert(num_written_culldistances);
-
- for (i = 0; i < num_written_culldistances; ++i) {
- unsigned cull_idx = (num_written_clipdistances + i) / 4;
- unsigned out_idx =
- draw_current_shader_ccdistance_output(stage->draw, cull_idx);
- unsigned idx = (num_written_clipdistances + i) % 4;
- float cull1 = header->v[0]->data[out_idx][idx];
- boolean vert1_out = cull_distance_is_out(cull1);
- if (vert1_out)
- return;
- }
- stage->next->point( stage->next, header );
-}
-
-/*
- * If the shader writes the culldistance then we can
- * perform distance based culling. Distance based
- * culling doesn't require a face and can be performed
- * on primitives without faces (e.g. points and lines)
- */
-static void cull_line( struct draw_stage *stage,
- struct prim_header *header )
-{
- const unsigned num_written_culldistances =
- draw_current_shader_num_written_culldistances(stage->draw);
- const unsigned num_written_clipdistances =
- draw_current_shader_num_written_clipdistances(stage->draw);
- unsigned i;
-
- debug_assert(num_written_culldistances);
-
- for (i = 0; i < num_written_culldistances; ++i) {
- unsigned cull_idx = (num_written_clipdistances + i) / 4;
- unsigned out_idx =
- draw_current_shader_ccdistance_output(stage->draw, cull_idx);
- unsigned idx = (num_written_clipdistances + i) % 4;
- float cull1 = header->v[0]->data[out_idx][idx];
- float cull2 = header->v[1]->data[out_idx][idx];
- boolean vert1_out = cull_distance_is_out(cull1);
- boolean vert2_out = cull_distance_is_out(cull2);
- if (vert1_out && vert2_out)
- return;
- }
- stage->next->line( stage->next, header );
-}
-
-/*
- * Triangles can be culled either using the cull distance
- * shader outputs or the regular face culling. If required
- * this function performs both, starting with distance culling.
+ * Triangles can be culled using regular face cull.
*/
static void cull_tri( struct draw_stage *stage,
struct prim_header *header )
{
- const unsigned num_written_culldistances =
- draw_current_shader_num_written_culldistances(stage->draw);
- const unsigned num_written_clipdistances =
- draw_current_shader_num_written_clipdistances(stage->draw);
- /* Do the distance culling */
- if (num_written_culldistances) {
- unsigned i;
- for (i = 0; i < num_written_culldistances; ++i) {
- unsigned cull_idx = (num_written_clipdistances + i) / 4;
- unsigned out_idx =
- draw_current_shader_ccdistance_output(stage->draw, cull_idx);
- unsigned idx = (num_written_clipdistances + i) % 4;
- float cull1 = header->v[0]->data[out_idx][idx];
- float cull2 = header->v[1]->data[out_idx][idx];
- float cull3 = header->v[2]->data[out_idx][idx];
- boolean vert1_out = cull_distance_is_out(cull1);
- boolean vert2_out = cull_distance_is_out(cull2);
- boolean vert3_out = cull_distance_is_out(cull3);
- if (vert1_out && vert2_out && vert3_out)
- return;
- }
- }
-
/* Do the regular face culling */
{
const unsigned pos = draw_current_shader_position_output(stage->draw);
@@ -195,36 +102,6 @@ static void cull_tri( struct draw_stage *stage,
}
}
-static void cull_first_point( struct draw_stage *stage,
- struct prim_header *header )
-{
- const unsigned num_written_culldistances =
- draw_current_shader_num_written_culldistances(stage->draw);
-
- if (num_written_culldistances) {
- stage->point = cull_point;
- stage->point( stage, header );
- } else {
- stage->point = draw_pipe_passthrough_point;
- stage->point( stage, header );
- }
-}
-
-static void cull_first_line( struct draw_stage *stage,
- struct prim_header *header )
-{
- const unsigned num_written_culldistances =
- draw_current_shader_num_written_culldistances(stage->draw);
-
- if (num_written_culldistances) {
- stage->line = cull_line;
- stage->line( stage, header );
- } else {
- stage->line = draw_pipe_passthrough_line;
- stage->line( stage, header );
- }
-}
-
static void cull_first_tri( struct draw_stage *stage,
struct prim_header *header )
{
@@ -240,8 +117,6 @@ static void cull_first_tri( struct draw_stage *stage,
static void cull_flush( struct draw_stage *stage, unsigned flags )
{
- stage->point = cull_first_point;
- stage->line = cull_first_line;
stage->tri = cull_first_tri;
stage->next->flush( stage->next, flags );
}
@@ -272,8 +147,8 @@ struct draw_stage *draw_cull_stage( struct draw_context *draw )
cull->stage.draw = draw;
cull->stage.name = "cull";
cull->stage.next = NULL;
- cull->stage.point = cull_first_point;
- cull->stage.line = cull_first_line;
+ cull->stage.point = draw_pipe_passthrough_point;
+ cull->stage.line = draw_pipe_passthrough_line;
cull->stage.tri = cull_first_tri;
cull->stage.flush = cull_flush;
cull->stage.reset_stipple_counter = cull_reset_stipple_counter;
generated by cgit v1.2.3 (git 2.25.1) at 2025-01-01 04:14:53 +0000