From: Keith Whitwell Date: Fri, 15 Feb 2008 18:56:41 +0000 (+0000) Subject: draw: vertex cache rework X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=30479ef11004c9498c4ef09048efc56227f104cc;p=mesa.git draw: vertex cache rework Take a baby step to straightening out vertex paths. --- diff --git a/src/gallium/auxiliary/draw/draw_context.c b/src/gallium/auxiliary/draw/draw_context.c index a7f3b4aecb2..b90a9f474de 100644 --- a/src/gallium/auxiliary/draw/draw_context.c +++ b/src/gallium/auxiliary/draw/draw_context.c @@ -72,10 +72,10 @@ struct draw_context *draw_create( void ) { uint i; const unsigned size = (MAX_VERTEX_SIZE + 0x0f) & ~0x0f; - char *tmp = align_malloc(Elements(draw->vcache.vertex) * size, 16); + char *tmp = align_malloc(Elements(draw->vs.queue) * size, 16); - for (i = 0; i < Elements(draw->vcache.vertex); i++) - draw->vcache.vertex[i] = (struct vertex_header *)(tmp + i * size); + for (i = 0; i < Elements(draw->vs.queue); i++) + draw->vs.queue[i].vertex = (struct vertex_header *)(tmp + i * size); } draw->shader_queue_flush = draw_vertex_shader_queue_flush; @@ -108,7 +108,7 @@ void draw_destroy( struct draw_context *draw ) if (draw->pipeline.rasterize) draw->pipeline.rasterize->destroy( draw->pipeline.rasterize ); tgsi_exec_machine_free_data(&draw->machine); - align_free( draw->vcache.vertex[0] ); /* Frees all the vertices. */ + align_free( draw->vs.queue[0].vertex ); /* Frees all the vertices. */ FREE( draw ); } diff --git a/src/gallium/auxiliary/draw/draw_prim.c b/src/gallium/auxiliary/draw/draw_prim.c index dd9a8488637..7d6cd43410c 100644 --- a/src/gallium/auxiliary/draw/draw_prim.c +++ b/src/gallium/auxiliary/draw/draw_prim.c @@ -114,6 +114,7 @@ static void draw_prim_queue_flush( struct draw_context *draw ) } draw->pq.queue_nr = 0; + draw->vs.post_nr = 0; draw_vertex_cache_unreference( draw ); } @@ -226,6 +227,7 @@ static void do_triangle( struct draw_context *draw, { struct prim_header *prim = get_queued_prim( draw, 3 ); +// _mesa_printf("tri %d %d %d\n", i0, i1, i2); prim->reset_line_stipple = 1; prim->edgeflags = ~0; prim->pad = 0; diff --git a/src/gallium/auxiliary/draw/draw_private.h b/src/gallium/auxiliary/draw/draw_private.h index 6c7e860861e..492c152ff98 100644 --- a/src/gallium/auxiliary/draw/draw_private.h +++ b/src/gallium/auxiliary/draw/draw_private.h @@ -120,7 +120,7 @@ struct draw_stage }; -#define PRIM_QUEUE_LENGTH 16 +#define PRIM_QUEUE_LENGTH 32 #define VCACHE_SIZE 32 #define VCACHE_OVERFLOW 4 #define VS_QUEUE_LENGTH (VCACHE_SIZE + VCACHE_OVERFLOW + 1) /* can never fill up */ @@ -244,8 +244,12 @@ struct draw_context */ struct { unsigned referenced; /**< bitfield */ - unsigned idx[VCACHE_SIZE + VCACHE_OVERFLOW]; - struct vertex_header *vertex[VCACHE_SIZE + VCACHE_OVERFLOW]; + + struct { + unsigned in; /* client array element */ + unsigned out; /* index in vs queue/array */ + } idx[VCACHE_SIZE + VCACHE_OVERFLOW]; + unsigned overflow; /** To find space in the vertex cache: */ @@ -258,9 +262,10 @@ struct draw_context struct { struct { unsigned elt; /**< index into the user's vertex arrays */ - struct vertex_header *dest; /**< points into vcache.vertex[] array */ + struct vertex_header *vertex; } queue[VS_QUEUE_LENGTH]; unsigned queue_nr; + unsigned post_nr; } vs; /** diff --git a/src/gallium/auxiliary/draw/draw_vertex_cache.c b/src/gallium/auxiliary/draw/draw_vertex_cache.c index 44427999ccf..53f8bbec445 100644 --- a/src/gallium/auxiliary/draw/draw_vertex_cache.c +++ b/src/gallium/auxiliary/draw/draw_vertex_cache.c @@ -41,7 +41,7 @@ void draw_vertex_cache_invalidate( struct draw_context *draw ) assert(draw->vs.queue_nr == 0); assert(draw->vcache.referenced == 0); - memset(draw->vcache.idx, ~0, sizeof(draw->vcache.idx)); +// memset(draw->vcache.idx, ~0, sizeof(draw->vcache.idx)); } @@ -62,43 +62,51 @@ static struct vertex_header *get_vertex( struct draw_context *draw, assert(slot < 32); /* so we don't exceed the bitfield size below */ - /* Cache miss? - */ - if (draw->vcache.idx[slot] != i) { - - /* If slot is in use, use the overflow area: + if (draw->vcache.referenced & (1<vcache.referenced & (1 << slot)) { - slot = VCACHE_SIZE + draw->vcache.overflow++; + if (draw->vcache.idx[slot].in == i) { +// _mesa_printf("HIT %d %d\n", slot, i); + assert(draw->vcache.idx[slot].out < draw->vs.queue_nr); + return draw->vs.queue[draw->vcache.idx[slot].out].vertex; } + /* Otherwise a collision + */ + slot = VCACHE_SIZE + draw->vcache.overflow++; +// _mesa_printf("XXX %d --> %d\n", i, slot); + } + + /* Deal with the cache miss: + */ + { + unsigned out; + assert(slot < Elements(draw->vcache.idx)); - draw->vcache.idx[slot] = i; +// _mesa_printf("NEW %d %d\n", slot, i); + draw->vcache.idx[slot].in = i; + draw->vcache.idx[slot].out = out = draw->vs.queue_nr++; + draw->vcache.referenced |= (1 << slot); + /* Add to vertex shader queue: */ assert(draw->vs.queue_nr < VS_QUEUE_LENGTH); - draw->vs.queue[draw->vs.queue_nr].dest = draw->vcache.vertex[slot]; - draw->vs.queue[draw->vs.queue_nr].elt = i; - draw->vs.queue_nr++; + + draw->vs.queue[out].elt = i; + draw->vs.queue[out].vertex->clipmask = 0; + draw->vs.queue[out].vertex->edgeflag = 1; /*XXX use user's edge flag! */ + draw->vs.queue[out].vertex->pad = 0; + draw->vs.queue[out].vertex->vertex_id = UNDEFINED_VERTEX_ID; /* Need to set the vertex's edge flag here. If we're being called * by do_ef_triangle(), that function needs edge flag info! */ - draw->vcache.vertex[slot]->clipmask = 0; - draw->vcache.vertex[slot]->edgeflag = 1; /*XXX use user's edge flag! */ - draw->vcache.vertex[slot]->pad = 0; - draw->vcache.vertex[slot]->vertex_id = UNDEFINED_VERTEX_ID; - } - - /* primitive flushing may have cleared the bitfield but did not - * clear the idx[] array values. Set the bit now. This fixes a - * bug found when drawing long triangle fans. - */ - draw->vcache.referenced |= (1 << slot); - return draw->vcache.vertex[slot]; + return draw->vs.queue[draw->vcache.idx[slot].out].vertex; + } } @@ -130,8 +138,8 @@ void draw_vertex_cache_reset_vertex_ids( struct draw_context *draw ) { unsigned i; - for (i = 0; i < Elements(draw->vcache.vertex); i++) - draw->vcache.vertex[i]->vertex_id = UNDEFINED_VERTEX_ID; + for (i = 0; i < draw->vs.post_nr; i++) + draw->vs.queue[i].vertex->vertex_id = UNDEFINED_VERTEX_ID; } diff --git a/src/gallium/auxiliary/draw/draw_vertex_shader.c b/src/gallium/auxiliary/draw/draw_vertex_shader.c index f68f6e32440..5d2f5c9c43a 100644 --- a/src/gallium/auxiliary/draw/draw_vertex_shader.c +++ b/src/gallium/auxiliary/draw/draw_vertex_shader.c @@ -55,7 +55,7 @@ draw_vertex_shader_queue_flush(struct draw_context *draw) */ shader->prepare( shader, draw ); -// fprintf(stderr, " q(%d) ", draw->vs.queue_nr ); +// fprintf(stderr, "%s %d\n", __FUNCTION__, draw->vs.queue_nr ); /* run vertex shader on vertex cache entries, four per invokation */ for (i = 0; i < draw->vs.queue_nr; i += 4) { @@ -65,12 +65,12 @@ draw_vertex_shader_queue_flush(struct draw_context *draw) for (j = 0; j < n; j++) { elts[j] = draw->vs.queue[i + j].elt; - dests[j] = draw->vs.queue[i + j].dest; + dests[j] = draw->vs.queue[i + j].vertex; } for ( ; j < 4; j++) { elts[j] = elts[0]; - dests[j] = dests[0]; + dests[j] = draw->vs.queue[i + j].vertex; } assert(n > 0); @@ -79,6 +79,7 @@ draw_vertex_shader_queue_flush(struct draw_context *draw) shader->run(shader, draw, elts, n, dests); } + draw->vs.post_nr = draw->vs.queue_nr; draw->vs.queue_nr = 0; }