From b5e5e61439bda7a3cf1f909b48467371ea53d9d7 Mon Sep 17 00:00:00 2001 From: Marek Olšák Date: Thu, 19 Apr 2012 00:56:44 +0200 Subject: u_vbuf: turn bool arrays into bitmasks and loops into bitwise operations Optimized functions: - u_vbuf_need_minmax_index - u_vbuf_mapping_vertex_buffer_blocks --- src/gallium/auxiliary/util/u_vbuf.c | 198 ++++++++++++++++-------------------- 1 file changed, 88 insertions(+), 110 deletions(-) (limited to 'src/gallium') diff --git a/src/gallium/auxiliary/util/u_vbuf.c b/src/gallium/auxiliary/util/u_vbuf.c index a592a1214e2..4a120df21bf 100644 --- a/src/gallium/auxiliary/util/u_vbuf.c +++ b/src/gallium/auxiliary/util/u_vbuf.c @@ -52,9 +52,21 @@ struct u_vbuf_elements { /* This might mean two things: * - src_format != native_format, as discussed above. * - src_offset % 4 != 0 (if the caps don't allow such an offset). */ - boolean incompatible_layout; - /* Per-element flags. */ - boolean incompatible_layout_elem[PIPE_MAX_ATTRIBS]; + uint32_t incompatible_elem_mask; /* each bit describes a corresp. attrib */ + /* Which buffer has at least one vertex element referencing it + * incompatible. */ + uint32_t incompatible_vb_mask_any; + /* Which buffer has all vertex elements referencing it incompatible. */ + uint32_t incompatible_vb_mask_all; + /* Which buffer has at least one vertex element referencing it + * compatible. */ + uint32_t compatible_vb_mask_any; + /* Which buffer has all vertex elements referencing it compatible. */ + uint32_t compatible_vb_mask_all; + + /* Which buffer has at least one vertex element referencing it + * non-instanced. */ + uint32_t noninstance_vb_mask_any; void *driver_cso; }; @@ -104,12 +116,12 @@ struct u_vbuf { * stored in. */ unsigned fallback_vbs[VB_NUM]; - /* Whether there is any user buffer. */ - boolean any_user_vbs; - /* Whether there is a buffer with a non-native layout. */ - boolean incompatible_vb_layout; - /* Per-buffer flags. */ - boolean incompatible_vb[PIPE_MAX_ATTRIBS]; + /* Which buffer is a user buffer. */ + uint32_t user_vb_mask; /* each bit describes a corresp. buffer */ + /* Which buffer is incompatible (unaligned). */ + uint32_t incompatible_vb_mask; /* each bit describes a corresp. buffer */ + /* Which buffer has a non-zero stride. */ + uint32_t nonzero_stride_vb_mask; /* each bit describes a corresp. buffer */ }; static void * @@ -367,10 +379,10 @@ u_vbuf_translate_find_free_vb_slots(struct u_vbuf *mgr, /* Mark used vertex buffers as... used. */ for (i = 0; i < nr; i++) { - if (!mgr->ve->incompatible_layout_elem[i]) { + if (!(mgr->ve->incompatible_elem_mask & (1 << i))) { unsigned index = mgr->ve->ve[i].vertex_buffer_index; - if (!mgr->incompatible_vb[index]) { + if (!(mgr->incompatible_vb_mask & (1 << index))) { used_vb[index] = TRUE; } } @@ -436,21 +448,21 @@ u_vbuf_translate_begin(struct u_vbuf *mgr, unsigned vb_index = mgr->ve->ve[i].vertex_buffer_index; if (!mgr->vertex_buffer[vb_index].stride) { - if (!mgr->ve->incompatible_layout_elem[i] && - !mgr->incompatible_vb[vb_index]) { + if (!(mgr->ve->incompatible_elem_mask & (1 << i)) && + !(mgr->incompatible_vb_mask & (1 << vb_index))) { continue; } mask[VB_CONST] |= 1 << vb_index; } else if (mgr->ve->ve[i].instance_divisor) { - if (!mgr->ve->incompatible_layout_elem[i] && - !mgr->incompatible_vb[vb_index]) { + if (!(mgr->ve->incompatible_elem_mask & (1 << i)) && + !(mgr->incompatible_vb_mask & (1 << vb_index))) { continue; } mask[VB_INSTANCE] |= 1 << vb_index; } else { if (!unroll_indices && - !mgr->ve->incompatible_layout_elem[i] && - !mgr->incompatible_vb[vb_index]) { + !(mgr->ve->incompatible_elem_mask & (1 << i)) && + !(mgr->incompatible_vb_mask & (1 << vb_index))) { continue; } mask[VB_VERTEX] |= 1 << vb_index; @@ -471,8 +483,8 @@ u_vbuf_translate_begin(struct u_vbuf *mgr, unsigned bit, vb_index = mgr->ve->ve[i].vertex_buffer_index; bit = 1 << vb_index; - if (!mgr->ve->incompatible_layout_elem[i] && - !mgr->incompatible_vb[vb_index] && + if (!(mgr->ve->incompatible_elem_mask & (1 << i)) && + !(mgr->incompatible_vb_mask & (1 << vb_index)) && (!unroll_indices || !(mask[VB_VERTEX] & bit))) { continue; } @@ -580,6 +592,7 @@ u_vbuf_create_vertex_elements(struct u_vbuf *mgr, unsigned count, unsigned i; struct pipe_vertex_element driver_attribs[PIPE_MAX_ATTRIBS]; struct u_vbuf_elements *ve = CALLOC_STRUCT(u_vbuf_elements); + uint32_t used_buffers = 0; ve->count = count; @@ -593,6 +606,12 @@ u_vbuf_create_vertex_elements(struct u_vbuf *mgr, unsigned count, ve->src_format_size[i] = util_format_get_blocksize(format); + used_buffers |= 1 << ve->ve[i].vertex_buffer_index; + + if (!ve->ve[i].instance_divisor) { + ve->noninstance_vb_mask_any |= 1 << ve->ve[i].vertex_buffer_index; + } + /* Choose a native format. * For now we don't care about the alignment, that's going to * be sorted out later. */ @@ -655,15 +674,19 @@ u_vbuf_create_vertex_elements(struct u_vbuf *mgr, unsigned count, ve->native_format_size[i] = util_format_get_blocksize(ve->native_format[i]); - ve->incompatible_layout_elem[i] = - ve->ve[i].src_format != format || - (!mgr->caps.velem_src_offset_unaligned && - ve->ve[i].src_offset % 4 != 0); - ve->incompatible_layout = - ve->incompatible_layout || - ve->incompatible_layout_elem[i]; + if (ve->ve[i].src_format != format || + (!mgr->caps.velem_src_offset_unaligned && + ve->ve[i].src_offset % 4 != 0)) { + ve->incompatible_elem_mask |= 1 << i; + ve->incompatible_vb_mask_any |= 1 << ve->ve[i].vertex_buffer_index; + } else { + ve->compatible_vb_mask_any |= 1 << ve->ve[i].vertex_buffer_index; + } } + ve->compatible_vb_mask_all = ~ve->incompatible_vb_mask_any & used_buffers; + ve->incompatible_vb_mask_all = ~ve->compatible_vb_mask_any & used_buffers; + /* Align the formats to the size of DWORD if needed. */ if (!mgr->caps.velem_src_offset_unaligned) { for (i = 0; i < count; i++) { @@ -690,9 +713,9 @@ void u_vbuf_set_vertex_buffers(struct u_vbuf *mgr, unsigned count, { unsigned i; - mgr->any_user_vbs = FALSE; - mgr->incompatible_vb_layout = FALSE; - memset(mgr->incompatible_vb, 0, sizeof(mgr->incompatible_vb)); + mgr->user_vb_mask = 0; + mgr->incompatible_vb_mask = 0; + mgr->nonzero_stride_vb_mask = 0; for (i = 0; i < count; i++) { const struct pipe_vertex_buffer *vb = &bufs[i]; @@ -704,6 +727,10 @@ void u_vbuf_set_vertex_buffers(struct u_vbuf *mgr, unsigned count, real_vb->buffer_offset = orig_vb->buffer_offset = vb->buffer_offset; real_vb->stride = orig_vb->stride = vb->stride; + if (vb->stride) { + mgr->nonzero_stride_vb_mask |= 1 << i; + } + if (!vb->buffer) { pipe_resource_reference(&real_vb->buffer, NULL); continue; @@ -711,14 +738,13 @@ void u_vbuf_set_vertex_buffers(struct u_vbuf *mgr, unsigned count, if ((!mgr->caps.buffer_offset_unaligned && vb->buffer_offset % 4 != 0) || (!mgr->caps.buffer_stride_unaligned && vb->stride % 4 != 0)) { - mgr->incompatible_vb[i] = TRUE; - mgr->incompatible_vb_layout = TRUE; + mgr->incompatible_vb_mask |= 1 << i; pipe_resource_reference(&real_vb->buffer, NULL); continue; } if (vb->buffer->user_ptr) { - mgr->any_user_vbs = TRUE; + mgr->user_vb_mask |= 1 << i; pipe_resource_reference(&real_vb->buffer, NULL); continue; } @@ -842,67 +868,23 @@ u_vbuf_upload_buffers(struct u_vbuf *mgr, static boolean u_vbuf_need_minmax_index(struct u_vbuf *mgr) { - unsigned i, nr = mgr->ve->count; - - for (i = 0; i < nr; i++) { - struct pipe_vertex_buffer *vb; - unsigned index; - - /* Per-instance attribs don't need min/max_index. */ - if (mgr->ve->ve[i].instance_divisor) { - continue; - } - - index = mgr->ve->ve[i].vertex_buffer_index; - vb = &mgr->vertex_buffer[index]; - - /* Constant attribs don't need min/max_index. */ - if (!vb->stride) { - continue; - } - - /* Per-vertex attribs need min/max_index. */ - if (vb->buffer->user_ptr || - mgr->ve->incompatible_layout_elem[i] || - mgr->incompatible_vb[index]) { - return TRUE; - } - } - - return FALSE; + /* See if there are any per-vertex attribs which will be uploaded or + * translated. Use bitmasks to get the info instead of looping over vertex + * elements. */ + return ((mgr->user_vb_mask | mgr->incompatible_vb_mask | + mgr->ve->incompatible_vb_mask_any) & + mgr->ve->noninstance_vb_mask_any & mgr->nonzero_stride_vb_mask) != 0; } static boolean u_vbuf_mapping_vertex_buffer_blocks(struct u_vbuf *mgr) { - unsigned i, nr = mgr->ve->count; - - for (i = 0; i < nr; i++) { - struct pipe_vertex_buffer *vb; - unsigned index; - - /* Per-instance attribs are not per-vertex data. */ - if (mgr->ve->ve[i].instance_divisor) { - continue; - } - - index = mgr->ve->ve[i].vertex_buffer_index; - vb = &mgr->vertex_buffer[index]; - - /* Constant attribs are not per-vertex data. */ - if (!vb->stride) { - continue; - } - - /* Return true for the hw buffers which don't need to be translated. */ - /* XXX we could use some kind of a is-busy query. */ - if (!vb->buffer->user_ptr && - !mgr->ve->incompatible_layout_elem[i] && - !mgr->incompatible_vb[index]) { - return TRUE; - } - } - - return FALSE; + /* Return true if there are hw buffers which don't need to be translated. + * + * We could query whether each buffer is busy, but that would + * be way more costly than this. */ + return (~mgr->user_vb_mask & ~mgr->incompatible_vb_mask & + mgr->ve->compatible_vb_mask_all & mgr->ve->noninstance_vb_mask_any & + mgr->nonzero_stride_vb_mask) != 0; } static void u_vbuf_get_minmax_index(struct pipe_context *pipe, @@ -1012,9 +994,9 @@ void u_vbuf_draw_vbo(struct u_vbuf *mgr, const struct pipe_draw_info *info) boolean unroll_indices = FALSE; /* Normal draw. No fallback and no user buffers. */ - if (!mgr->incompatible_vb_layout && - !mgr->ve->incompatible_layout && - !mgr->any_user_vbs) { + if (!mgr->incompatible_vb_mask && + !mgr->ve->incompatible_elem_mask && + !mgr->user_vb_mask) { /* Set vertex buffers if needed. */ if (mgr->vertex_buffers_dirty) { pipe->set_vertex_buffers(pipe, mgr->nr_real_vertex_buffers, @@ -1027,22 +1009,18 @@ void u_vbuf_draw_vbo(struct u_vbuf *mgr, const struct pipe_draw_info *info) } if (info->indexed) { - int max_index; - boolean index_bounds_valid = FALSE; - - if (info->max_index != ~0) { - min_index = info->min_index; - max_index = info->max_index; - index_bounds_valid = TRUE; - } else if (u_vbuf_need_minmax_index(mgr)) { - u_vbuf_get_minmax_index(mgr->pipe, &mgr->index_buffer, info, - &min_index, &max_index); - index_bounds_valid = TRUE; - } + /* See if anything needs to be done for per-vertex attribs. */ + if (u_vbuf_need_minmax_index(mgr)) { + int max_index; + + if (info->max_index != ~0) { + min_index = info->min_index; + max_index = info->max_index; + } else { + u_vbuf_get_minmax_index(mgr->pipe, &mgr->index_buffer, info, + &min_index, &max_index); + } - /* If the index bounds are valid, it means some upload or translation - * of per-vertex attribs will be performed. */ - if (index_bounds_valid) { assert(min_index <= max_index); start_vertex = min_index + info->index_bias; @@ -1073,8 +1051,8 @@ void u_vbuf_draw_vbo(struct u_vbuf *mgr, const struct pipe_draw_info *info) /* Translate vertices with non-native layouts or formats. */ if (unroll_indices || - mgr->incompatible_vb_layout || - mgr->ve->incompatible_layout) { + mgr->incompatible_vb_mask || + mgr->ve->incompatible_elem_mask) { /* XXX check the return value */ u_vbuf_translate_begin(mgr, start_vertex, num_vertices, info->start_instance, info->instance_count, @@ -1083,7 +1061,7 @@ void u_vbuf_draw_vbo(struct u_vbuf *mgr, const struct pipe_draw_info *info) } /* Upload user buffers. */ - if (mgr->any_user_vbs) { + if (mgr->user_vb_mask) { u_vbuf_upload_buffers(mgr, start_vertex, num_vertices, info->start_instance, info->instance_count); } -- cgit v1.2.3