/********************************************************** * 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_prim.h" #include "indices/u_indices.h" #include "svga_cmd.h" #include "svga_draw.h" #include "svga_draw_private.h" #include "svga_resource_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_resource *src, unsigned offset, unsigned prim, unsigned nr, unsigned index_size, u_translate_func translate, struct pipe_resource **out_buf) { struct pipe_context *pipe = &hwtnl->svga->pipe; struct pipe_transfer *src_transfer = NULL; struct pipe_transfer *dst_transfer = NULL; unsigned size; const void *src_map = NULL; struct pipe_resource *dst = NULL; void *dst_map = NULL; /* Need to trim vertex count to make sure we don't write too much data * to the dst buffer in the translate() call. */ u_trim_pipe_prim(prim, &nr); size = index_size * nr; dst = pipe_buffer_create(pipe->screen, PIPE_BIND_INDEX_BUFFER, PIPE_USAGE_DEFAULT, size); if (dst == NULL) goto fail; src_map = pipe_buffer_map(pipe, src, PIPE_TRANSFER_READ, &src_transfer); if (src_map == NULL) goto fail; dst_map = pipe_buffer_map(pipe, dst, PIPE_TRANSFER_WRITE, &dst_transfer); if (dst_map == NULL) goto fail; translate((const char *) src_map + offset, 0, 0, nr, 0, dst_map); pipe_buffer_unmap(pipe, src_transfer); pipe_buffer_unmap(pipe, dst_transfer); *out_buf = dst; return PIPE_OK; fail: if (src_map) pipe_buffer_unmap(pipe, src_transfer); if (dst_map) pipe_buffer_unmap(pipe, dst_transfer); if (dst) pipe->screen->resource_destroy(pipe->screen, dst); return PIPE_ERROR_OUT_OF_MEMORY; } enum pipe_error svga_hwtnl_simple_draw_range_elements(struct svga_hwtnl *hwtnl, struct pipe_resource *index_buffer, unsigned index_size, int index_bias, unsigned min_index, unsigned max_index, unsigned prim, unsigned start, unsigned count) { SVGA3dPrimitiveRange range; unsigned hw_prim; unsigned hw_count; unsigned index_offset = start * index_size; hw_prim = svga_translate_prim(prim, count, &hw_count); if (hw_count == 0) return PIPE_OK; /* nothing to draw */ /* We should never see user-space buffers in the driver. The vbuf * module should have converted them into real buffers. */ if (index_buffer) assert(!svga_buffer_is_user_buffer(index_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 = index_bias; return svga_hwtnl_prim(hwtnl, &range, min_index, max_index, index_buffer); } enum pipe_error svga_hwtnl_draw_range_elements(struct svga_hwtnl *hwtnl, struct pipe_resource *index_buffer, unsigned index_size, int index_bias, unsigned min_index, unsigned max_index, unsigned prim, unsigned start, unsigned count) { 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, PR_DISABLE, &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, index_bias, min_index, max_index, gen_prim, start, count); } else { struct pipe_resource *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_prim, gen_nr, gen_size, gen_func, &gen_buf); if (ret != PIPE_OK) goto done; ret = svga_hwtnl_simple_draw_range_elements(hwtnl, gen_buf, gen_size, index_bias, min_index, max_index, gen_prim, 0, gen_nr); if (ret != PIPE_OK) goto done; done: if (gen_buf) pipe_resource_reference(&gen_buf, NULL); return ret; } }