/********************************************************** * Copyright 2008-2009 VMware, Inc. All rights reserved. * * Permission is hereby granted, free of charge, to any person * obtaining a copy of this software and associated documentation * files (the "Software"), to deal in the Software without * restriction, including without limitation the rights to use, copy, * modify, merge, publish, distribute, sublicense, and/or sell copies * of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be * included in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. * **********************************************************/ #include "util/u_format.h" #include "util/u_helpers.h" #include "util/u_inlines.h" #include "util/u_prim.h" #include "util/u_prim_restart.h" #include "util/u_time.h" #include "util/u_upload_mgr.h" #include "indices/u_indices.h" #include "svga_hw_reg.h" #include "svga_cmd.h" #include "svga_context.h" #include "svga_screen.h" #include "svga_draw.h" #include "svga_shader.h" #include "svga_state.h" #include "svga_surface.h" #include "svga_swtnl.h" #include "svga_debug.h" #include "svga_resource_buffer.h" /* Returns TRUE if we are currently using flat shading. */ static boolean is_using_flat_shading(const struct svga_context *svga) { return svga->state.hw_draw.fs ? svga->state.hw_draw.fs->uses_flat_interp : FALSE; } static enum pipe_error retry_draw_range_elements( struct svga_context *svga, struct pipe_resource *index_buffer, unsigned index_size, int index_bias, unsigned min_index, unsigned max_index, enum pipe_prim_type prim, unsigned start, unsigned count, unsigned start_instance, unsigned instance_count, boolean do_retry ) { enum pipe_error ret = PIPE_OK; SVGA_STATS_TIME_PUSH(svga_sws(svga), SVGA_STATS_TIME_DRAWELEMENTS); svga_hwtnl_set_fillmode(svga->hwtnl, svga->curr.rast->hw_fillmode); ret = svga_update_state( svga, SVGA_STATE_HW_DRAW ); if (ret != PIPE_OK) goto retry; /** determine if flatshade is to be used after svga_update_state() * in case the fragment shader is changed. */ svga_hwtnl_set_flatshade(svga->hwtnl, svga->curr.rast->templ.flatshade || is_using_flat_shading(svga), svga->curr.rast->templ.flatshade_first); ret = svga_hwtnl_draw_range_elements( svga->hwtnl, index_buffer, index_size, index_bias, min_index, max_index, prim, start, count, start_instance, instance_count); if (ret != PIPE_OK) goto retry; goto done; retry: svga_context_flush( svga, NULL ); if (do_retry) { ret = retry_draw_range_elements(svga, index_buffer, index_size, index_bias, min_index, max_index, prim, start, count, start_instance, instance_count, FALSE); } done: SVGA_STATS_TIME_POP(svga_sws(svga)); return ret; } static enum pipe_error retry_draw_arrays( struct svga_context *svga, enum pipe_prim_type prim, unsigned start, unsigned count, unsigned start_instance, unsigned instance_count, boolean do_retry ) { enum pipe_error ret; SVGA_STATS_TIME_PUSH(svga_sws(svga), SVGA_STATS_TIME_DRAWARRAYS); svga_hwtnl_set_fillmode(svga->hwtnl, svga->curr.rast->hw_fillmode); ret = svga_update_state( svga, SVGA_STATE_HW_DRAW ); if (ret != PIPE_OK) goto retry; /** determine if flatshade is to be used after svga_update_state() * in case the fragment shader is changed. */ svga_hwtnl_set_flatshade(svga->hwtnl, svga->curr.rast->templ.flatshade || is_using_flat_shading(svga), svga->curr.rast->templ.flatshade_first); ret = svga_hwtnl_draw_arrays(svga->hwtnl, prim, start, count, start_instance, instance_count); if (ret != PIPE_OK) goto retry; goto done; retry: if (ret == PIPE_ERROR_OUT_OF_MEMORY && do_retry) { svga_context_flush( svga, NULL ); ret = retry_draw_arrays(svga, prim, start, count, start_instance, instance_count, FALSE); } done: SVGA_STATS_TIME_POP(svga_sws(svga)); return ret; } /** * Determine if we need to implement primitive restart with a fallback * path which breaks the original primitive into sub-primitive at the * restart indexes. */ static boolean need_fallback_prim_restart(const struct svga_context *svga, const struct pipe_draw_info *info) { if (info->primitive_restart && info->index_size) { if (!svga_have_vgpu10(svga)) return TRUE; else if (!svga->state.sw.need_swtnl) { if (info->index_size == 1) return TRUE; /* no device support for 1-byte indexes */ else if (info->index_size == 2) return info->restart_index != 0xffff; else return info->restart_index != 0xffffffff; } } return FALSE; } static void svga_draw_vbo(struct pipe_context *pipe, const struct pipe_draw_info *info) { struct svga_context *svga = svga_context( pipe ); enum pipe_prim_type reduced_prim = u_reduced_prim( info->mode ); unsigned count = info->count; enum pipe_error ret = 0; boolean needed_swtnl; struct pipe_resource *indexbuf = info->has_user_indices ? NULL : info->index.resource; SVGA_STATS_TIME_PUSH(svga_sws(svga), SVGA_STATS_TIME_DRAWVBO); svga->hud.num_draw_calls++; /* for SVGA_QUERY_NUM_DRAW_CALLS */ if (u_reduced_prim(info->mode) == PIPE_PRIM_TRIANGLES && svga->curr.rast->templ.cull_face == PIPE_FACE_FRONT_AND_BACK) goto done; /* Upload a user index buffer. */ unsigned index_offset = 0; if (info->index_size && info->has_user_indices && !util_upload_index_buffer(pipe, info, &indexbuf, &index_offset)) { goto done; } /* * Mark currently bound target surfaces as dirty * doesn't really matter if it is done before drawing. * * TODO If we ever normaly return something other then * true we should not mark it as dirty then. */ svga_mark_surfaces_dirty(svga_context(pipe)); if (svga->curr.reduced_prim != reduced_prim) { svga->curr.reduced_prim = reduced_prim; svga->dirty |= SVGA_NEW_REDUCED_PRIMITIVE; } if (need_fallback_prim_restart(svga, info)) { enum pipe_error r; r = util_draw_vbo_without_prim_restart(pipe, info); assert(r == PIPE_OK); (void) r; goto done; } if (!u_trim_pipe_prim( info->mode, &count )) goto done; needed_swtnl = svga->state.sw.need_swtnl; svga_update_state_retry( svga, SVGA_STATE_NEED_SWTNL ); if (svga->state.sw.need_swtnl) { svga->hud.num_fallbacks++; /* for SVGA_QUERY_NUM_FALLBACKS */ if (!needed_swtnl) { /* * We're switching from HW to SW TNL. SW TNL will require mapping all * currently bound vertex buffers, some of which may already be * referenced in the current command buffer as result of previous HW * TNL. So flush now, to prevent the context to flush while a referred * vertex buffer is mapped. */ svga_context_flush(svga, NULL); } /* Avoid leaking the previous hwtnl bias to swtnl */ svga_hwtnl_set_index_bias( svga->hwtnl, 0 ); ret = svga_swtnl_draw_vbo(svga, info, indexbuf, index_offset); } else { if (info->index_size && indexbuf) { unsigned offset; assert(index_offset % info->index_size == 0); offset = index_offset / info->index_size; ret = retry_draw_range_elements( svga, indexbuf, info->index_size, info->index_bias, info->min_index, info->max_index, info->mode, info->start + offset, count, info->start_instance, info->instance_count, TRUE ); } else { ret = retry_draw_arrays(svga, info->mode, info->start, count, info->start_instance, info->instance_count, TRUE); } } /* XXX: Silence warnings, do something sensible here? */ (void)ret; if (SVGA_DEBUG & DEBUG_FLUSH) { svga_hwtnl_flush_retry( svga ); svga_context_flush(svga, NULL); } done: if (info->index_size && info->index.resource != indexbuf) pipe_resource_reference(&indexbuf, NULL); SVGA_STATS_TIME_POP(svga_sws(svga)); } void svga_init_draw_functions( struct svga_context *svga ) { svga->pipe.draw_vbo = svga_draw_vbo; }