/********************************************************** * 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_inlines.h" #include "util/u_upload_mgr.h" #include "indices/u_indices.h" #include "svga_cmd.h" #include "svga_draw.h" #include "svga_draw_private.h" #include "svga_screen_buffer.h" #include "svga_winsys.h" #include "svga_context.h" #include "svga_hw_reg.h" static enum pipe_error translate_indices( struct svga_hwtnl *hwtnl, struct pipe_buffer *src, unsigned offset, unsigned nr, unsigned index_size, u_translate_func translate, struct pipe_buffer **out_buf ) { struct pipe_screen *screen = hwtnl->svga->pipe.screen; unsigned size = index_size * nr; const void *src_map = NULL; struct pipe_buffer *dst = NULL; void *dst_map = NULL; dst = screen->buffer_create( screen, 32, PIPE_BUFFER_USAGE_INDEX | PIPE_BUFFER_USAGE_CPU_WRITE | PIPE_BUFFER_USAGE_GPU_READ, size ); if (dst == NULL) goto fail; src_map = pipe_buffer_map( screen, src, PIPE_BUFFER_USAGE_CPU_READ ); if (src_map == NULL) goto fail; dst_map = pipe_buffer_map( screen, dst, PIPE_BUFFER_USAGE_CPU_WRITE ); if (dst_map == NULL) goto fail; translate( (const char *)src_map + offset, nr, dst_map ); pipe_buffer_unmap( screen, src ); pipe_buffer_unmap( screen, dst ); *out_buf = dst; return PIPE_OK; fail: if (src_map) screen->buffer_unmap( screen, src ); if (dst_map) screen->buffer_unmap( screen, dst ); if (dst) screen->buffer_destroy( dst ); return PIPE_ERROR_OUT_OF_MEMORY; } enum pipe_error svga_hwtnl_simple_draw_range_elements( struct svga_hwtnl *hwtnl, struct pipe_buffer *index_buffer, unsigned index_size, unsigned min_index, unsigned max_index, unsigned prim, unsigned start, unsigned count, unsigned bias ) { struct pipe_buffer *upload_buffer = NULL; SVGA3dPrimitiveRange range; unsigned hw_prim; unsigned hw_count; unsigned index_offset = start * index_size; int ret = PIPE_OK; hw_prim = svga_translate_prim(prim, count, &hw_count); if (hw_count == 0) goto done; if (index_buffer && svga_buffer_is_user_buffer(index_buffer)) { assert( index_buffer->size >= index_offset + count * index_size ); ret = u_upload_buffer( hwtnl->upload_ib, index_offset, count * index_size, index_buffer, &index_offset, &upload_buffer ); if (ret) goto done; /* Don't need to worry about refcounting index_buffer as this is * just a stack variable without a counted reference of its own. * The caller holds the reference. */ index_buffer = upload_buffer; } range.primType = hw_prim; range.primitiveCount = hw_count; range.indexArray.offset = index_offset; range.indexArray.stride = index_size; range.indexWidth = index_size; range.indexBias = bias; ret = svga_hwtnl_prim( hwtnl, &range, min_index, max_index, index_buffer ); if (ret) goto done; done: if (upload_buffer) pipe_buffer_reference( &upload_buffer, NULL ); return ret; } enum pipe_error svga_hwtnl_draw_range_elements( struct svga_hwtnl *hwtnl, struct pipe_buffer *index_buffer, unsigned index_size, unsigned min_index, unsigned max_index, unsigned prim, unsigned start, unsigned count, unsigned bias) { unsigned gen_prim, gen_size, gen_nr, gen_type; u_translate_func gen_func; enum pipe_error ret = PIPE_OK; if (hwtnl->api_fillmode != PIPE_POLYGON_MODE_FILL && prim >= PIPE_PRIM_TRIANGLES) { gen_type = u_unfilled_translator( prim, index_size, count, hwtnl->api_fillmode, &gen_prim, &gen_size, &gen_nr, &gen_func ); } else { gen_type = u_index_translator( svga_hw_prims, prim, index_size, count, hwtnl->api_pv, hwtnl->hw_pv, &gen_prim, &gen_size, &gen_nr, &gen_func ); } if (gen_type == U_TRANSLATE_MEMCPY) { /* No need for translation, just pass through to hardware: */ return svga_hwtnl_simple_draw_range_elements( hwtnl, index_buffer, index_size, min_index, max_index, gen_prim, start, count, bias ); } else { struct pipe_buffer *gen_buf = NULL; /* Need to allocate a new index buffer and run the translate * func to populate it. Could potentially cache this translated * index buffer with the original to avoid future * re-translations. Not much point if we're just accelerating * GL though, as index buffers are typically used only once * there. */ ret = translate_indices( hwtnl, index_buffer, start * index_size, gen_nr, gen_size, gen_func, &gen_buf ); if (ret) goto done; ret = svga_hwtnl_simple_draw_range_elements( hwtnl, gen_buf, gen_size, min_index, max_index, gen_prim, 0, gen_nr, bias ); if (ret) goto done; done: if (gen_buf) pipe_buffer_reference( &gen_buf, NULL ); return ret; } }