diff options
Diffstat (limited to 'src/gallium/auxiliary/draw/draw_pt_fetch_emit.c')
-rw-r--r-- | src/gallium/auxiliary/draw/draw_pt_fetch_emit.c | 125 |
1 files changed, 120 insertions, 5 deletions
diff --git a/src/gallium/auxiliary/draw/draw_pt_fetch_emit.c b/src/gallium/auxiliary/draw/draw_pt_fetch_emit.c index 4ea7d4359f..4a1f3b0953 100644 --- a/src/gallium/auxiliary/draw/draw_pt_fetch_emit.c +++ b/src/gallium/auxiliary/draw/draw_pt_fetch_emit.c @@ -90,7 +90,8 @@ struct fetch_emit_middle_end { static void fetch_emit_prepare( struct draw_pt_middle_end *middle, unsigned prim, - unsigned opt ) + unsigned opt, + unsigned *max_vertices ) { struct fetch_emit_middle_end *feme = (struct fetch_emit_middle_end *)middle; struct draw_context *draw = feme->draw; @@ -196,6 +197,18 @@ static void fetch_emit_prepare( struct draw_pt_middle_end *middle, draw->pt.vertex_buffer[i].buffer_offset), draw->pt.vertex_buffer[i].pitch ); } + + *max_vertices = (draw->render->max_vertex_buffer_bytes / + (vinfo->size * 4)); + + /* Return an even number of verts. + * This prevents "parity" errors when splitting long triangle strips which + * can lead to front/back culling mix-ups. + * Every other triangle in a strip has an alternate front/back orientation + * so splitting at an odd position can cause the orientation of subsequent + * triangles to get reversed. + */ + *max_vertices = *max_vertices & ~1; } @@ -258,6 +271,106 @@ static void fetch_emit_run( struct draw_pt_middle_end *middle, } +static void fetch_emit_run_linear( struct draw_pt_middle_end *middle, + unsigned start, + unsigned count ) +{ + struct fetch_emit_middle_end *feme = (struct fetch_emit_middle_end *)middle; + struct draw_context *draw = feme->draw; + void *hw_verts; + + /* XXX: need to flush to get prim_vbuf.c to release its allocation?? + */ + draw_do_flush( draw, DRAW_FLUSH_BACKEND ); + + hw_verts = draw->render->allocate_vertices( draw->render, + (ushort)feme->translate->key.output_stride, + (ushort)count ); + if (!hw_verts) { + assert(0); + return; + } + + /* Single routine to fetch vertices and emit HW verts. + */ + feme->translate->run( feme->translate, + start, + count, + hw_verts ); + + if (0) { + unsigned i; + for (i = 0; i < count; i++) { + debug_printf("\n\nvertex %d:\n", i); + draw_dump_emitted_vertex( feme->vinfo, + (const uint8_t *)hw_verts + feme->vinfo->size * 4 * i ); + } + } + + /* XXX: Draw arrays path to avoid re-emitting index list again and + * again. + */ + draw->render->draw_arrays( draw->render, + 0, /*start*/ + count ); + + /* Done -- that was easy, wasn't it: + */ + draw->render->release_vertices( draw->render, + hw_verts, + feme->translate->key.output_stride, + count ); + +} + + +static void fetch_emit_run_linear_elts( struct draw_pt_middle_end *middle, + unsigned start, + unsigned count, + const ushort *draw_elts, + unsigned draw_count ) +{ + struct fetch_emit_middle_end *feme = (struct fetch_emit_middle_end *)middle; + struct draw_context *draw = feme->draw; + void *hw_verts; + + /* XXX: need to flush to get prim_vbuf.c to release its allocation?? + */ + draw_do_flush( draw, DRAW_FLUSH_BACKEND ); + + hw_verts = draw->render->allocate_vertices( draw->render, + (ushort)feme->translate->key.output_stride, + (ushort)count ); + if (!hw_verts) { + assert(0); + return; + } + + /* Single routine to fetch vertices and emit HW verts. + */ + feme->translate->run( feme->translate, + start, + count, + hw_verts ); + + /* XXX: Draw arrays path to avoid re-emitting index list again and + * again. + */ + draw->render->draw( draw->render, + draw_elts, + draw_count ); + + /* Done -- that was easy, wasn't it: + */ + draw->render->release_vertices( draw->render, + hw_verts, + feme->translate->key.output_stride, + count ); + +} + + + static void fetch_emit_finish( struct draw_pt_middle_end *middle ) { @@ -287,10 +400,12 @@ struct draw_pt_middle_end *draw_pt_fetch_emit( struct draw_context *draw ) return NULL; } - fetch_emit->base.prepare = fetch_emit_prepare; - fetch_emit->base.run = fetch_emit_run; - fetch_emit->base.finish = fetch_emit_finish; - fetch_emit->base.destroy = fetch_emit_destroy; + fetch_emit->base.prepare = fetch_emit_prepare; + fetch_emit->base.run = fetch_emit_run; + fetch_emit->base.run_linear = fetch_emit_run_linear; + fetch_emit->base.run_linear_elts = fetch_emit_run_linear_elts; + fetch_emit->base.finish = fetch_emit_finish; + fetch_emit->base.destroy = fetch_emit_destroy; fetch_emit->draw = draw; |