| /********************************************************** |
| * 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 "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_resource_buffer.h" |
| #include "svga_winsys.h" |
| #include "svga_context.h" |
| #include "svga_hw_reg.h" |
| |
| |
| /** |
| * Return a new index buffer which contains a translation of the original |
| * index buffer. An example of a translation is converting from QUAD |
| * primitives to TRIANGLE primitives. Each set of four indexes for a quad |
| * will be converted to six indices for two triangles. |
| * |
| * Before generating the new index buffer we'll check if the incoming |
| * buffer already has a translated buffer that can be re-used. |
| * This benefits demos like Cinebench R15 which has many |
| * glDrawElements(GL_QUADS) commands (we can't draw quads natively). |
| * |
| * \param offset offset in bytes to first index to translate in src buffer |
| * \param orig_prim original primitive type (like PIPE_PRIM_QUADS) |
| * \param gen_prim new/generated primitive type (like PIPE_PRIM_TRIANGLES) |
| * \param orig_nr number of indexes to translate in source buffer |
| * \param gen_nr number of indexes to write into new/dest buffer |
| * \param index_size bytes per index (2 or 4) |
| * \param translate the translation function from the u_translate module |
| * \param out_buf returns the new/translated index buffer |
| * \return error code to indicate success failure |
| */ |
| static enum pipe_error |
| translate_indices(struct svga_hwtnl *hwtnl, |
| const struct pipe_draw_info *info, |
| enum pipe_prim_type gen_prim, |
| unsigned orig_nr, unsigned gen_nr, |
| unsigned gen_size, |
| u_translate_func translate, |
| struct pipe_resource **out_buf, |
| unsigned *out_offset) |
| { |
| struct pipe_context *pipe = &hwtnl->svga->pipe; |
| struct svga_screen *screen = svga_screen(pipe->screen); |
| struct svga_buffer *src_sbuf = NULL; |
| struct pipe_transfer *src_transfer = NULL; |
| struct pipe_transfer *dst_transfer = NULL; |
| const unsigned size = gen_size * gen_nr; |
| const unsigned offset = info->start * info->index_size; |
| const void *src_map = NULL; |
| struct pipe_resource *dst = NULL; |
| void *dst_map = NULL; |
| |
| assert(gen_size == 2 || gen_size == 4); |
| if (!info->has_user_indices) |
| src_sbuf = svga_buffer(info->index.resource); |
| |
| /* If the draw_info provides us with a buffer rather than a |
| * user pointer, Check to see if we've already translated that buffer |
| */ |
| if (src_sbuf && !screen->debug.no_cache_index_buffers) { |
| /* Check if we already have a translated index buffer */ |
| if (src_sbuf->translated_indices.buffer && |
| src_sbuf->translated_indices.orig_prim == info->mode && |
| src_sbuf->translated_indices.new_prim == gen_prim && |
| src_sbuf->translated_indices.offset == offset && |
| src_sbuf->translated_indices.count == orig_nr && |
| src_sbuf->translated_indices.index_size == gen_size) { |
| pipe_resource_reference(out_buf, src_sbuf->translated_indices.buffer); |
| return PIPE_OK; |
| } |
| } |
| |
| /* 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(gen_prim, &gen_nr); |
| |
| if (src_sbuf) { |
| /* If we have a source buffer, create a destination buffer in the |
| * hope that we can reuse the translated data later. If not, |
| * we'd probably be better off using the upload buffer. |
| */ |
| dst = pipe_buffer_create(pipe->screen, |
| PIPE_BIND_INDEX_BUFFER, PIPE_USAGE_IMMUTABLE, |
| size); |
| if (!dst) |
| goto fail; |
| |
| dst_map = pipe_buffer_map(pipe, dst, PIPE_TRANSFER_WRITE, &dst_transfer); |
| if (!dst_map) |
| goto fail; |
| |
| *out_offset = 0; |
| src_map = pipe_buffer_map(pipe, info->index.resource, |
| PIPE_TRANSFER_READ | |
| PIPE_TRANSFER_UNSYNCHRONIZED, |
| &src_transfer); |
| if (!src_map) |
| goto fail; |
| } else { |
| /* Allocate upload buffer space. Align to the index size. */ |
| u_upload_alloc(pipe->stream_uploader, 0, size, gen_size, |
| out_offset, &dst, &dst_map); |
| if (!dst) |
| goto fail; |
| |
| src_map = info->index.user; |
| } |
| |
| translate((const char *) src_map + offset, 0, 0, gen_nr, 0, dst_map); |
| |
| if (src_transfer) |
| pipe_buffer_unmap(pipe, src_transfer); |
| |
| if (dst_transfer) |
| pipe_buffer_unmap(pipe, dst_transfer); |
| else |
| u_upload_unmap(pipe->stream_uploader); |
| |
| *out_buf = dst; |
| |
| if (src_sbuf && !screen->debug.no_cache_index_buffers) { |
| /* Save the new, translated index buffer in the hope we can use it |
| * again in the future. |
| */ |
| pipe_resource_reference(&src_sbuf->translated_indices.buffer, dst); |
| src_sbuf->translated_indices.orig_prim = info->mode; |
| src_sbuf->translated_indices.new_prim = gen_prim; |
| src_sbuf->translated_indices.offset = offset; |
| src_sbuf->translated_indices.count = orig_nr; |
| src_sbuf->translated_indices.index_size = gen_size; |
| } |
| |
| return PIPE_OK; |
| |
| fail: |
| if (src_transfer) |
| pipe_buffer_unmap(pipe, src_transfer); |
| |
| if (dst_transfer) |
| pipe_buffer_unmap(pipe, dst_transfer); |
| else if (dst_map) |
| u_upload_unmap(pipe->stream_uploader); |
| |
| if (dst) |
| pipe_resource_reference(&dst, NULL); |
| |
| 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, |
| enum pipe_prim_type prim, unsigned start, |
| unsigned count, |
| unsigned start_instance, |
| unsigned instance_count, |
| ubyte vertices_per_patch) |
| { |
| SVGA3dPrimitiveRange range; |
| unsigned hw_prim; |
| unsigned hw_count; |
| unsigned index_offset = start * index_size; |
| |
| hw_prim = svga_translate_prim(prim, count, &hw_count, vertices_per_patch); |
| if (hw_count == 0) |
| return PIPE_OK; /* nothing to draw */ |
| |
| 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, count, |
| min_index, max_index, index_buffer, |
| start_instance, instance_count, |
| NULL, NULL); |
| } |
| |
| |
| enum pipe_error |
| svga_hwtnl_draw_range_elements(struct svga_hwtnl *hwtnl, |
| const struct pipe_draw_info *info, |
| unsigned count) |
| { |
| struct pipe_context *pipe = &hwtnl->svga->pipe; |
| enum pipe_prim_type gen_prim; |
| unsigned gen_size, gen_nr; |
| enum indices_mode gen_type; |
| u_translate_func gen_func; |
| enum pipe_error ret = PIPE_OK; |
| |
| SVGA_STATS_TIME_PUSH(svga_sws(hwtnl->svga), |
| SVGA_STATS_TIME_HWTNLDRAWELEMENTS); |
| |
| if (svga_need_unfilled_fallback(hwtnl, info->mode)) { |
| gen_type = u_unfilled_translator(info->mode, |
| info->index_size, |
| count, |
| hwtnl->api_fillmode, |
| &gen_prim, |
| &gen_size, &gen_nr, &gen_func); |
| } |
| else { |
| unsigned hw_pv; |
| |
| /* There is no geometry ordering with PATCH, so no need to |
| * consider provoking vertex mode for the translation. |
| * So use the same api_pv as the hw_pv. |
| */ |
| hw_pv = info->mode == PIPE_PRIM_PATCHES ? hwtnl->api_pv : |
| hwtnl->hw_pv; |
| gen_type = u_index_translator(svga_hw_prims, |
| info->mode, |
| info->index_size, |
| count, |
| hwtnl->api_pv, |
| 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: |
| */ |
| unsigned start_offset = info->start * info->index_size; |
| struct pipe_resource *index_buffer = NULL; |
| unsigned index_offset; |
| |
| if (info->has_user_indices) { |
| u_upload_data(pipe->stream_uploader, 0, count * info->index_size, |
| info->index_size, (char *) info->index.user + start_offset, |
| &index_offset, &index_buffer); |
| u_upload_unmap(pipe->stream_uploader); |
| index_offset /= info->index_size; |
| } else { |
| pipe_resource_reference(&index_buffer, info->index.resource); |
| index_offset = info->start; |
| } |
| |
| assert(index_buffer != NULL); |
| |
| ret = svga_hwtnl_simple_draw_range_elements(hwtnl, index_buffer, |
| info->index_size, |
| info->index_bias, |
| info->min_index, |
| info->max_index, |
| gen_prim, index_offset, count, |
| info->start_instance, |
| info->instance_count, |
| info->vertices_per_patch); |
| pipe_resource_reference(&index_buffer, NULL); |
| } |
| else { |
| struct pipe_resource *gen_buf = NULL; |
| unsigned gen_offset = 0; |
| |
| /* 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, info, gen_prim, |
| count, gen_nr, gen_size, |
| gen_func, &gen_buf, &gen_offset); |
| if (ret == PIPE_OK) { |
| gen_offset /= gen_size; |
| ret = svga_hwtnl_simple_draw_range_elements(hwtnl, |
| gen_buf, |
| gen_size, |
| info->index_bias, |
| info->min_index, |
| info->max_index, |
| gen_prim, gen_offset, |
| gen_nr, |
| info->start_instance, |
| info->instance_count, |
| info->vertices_per_patch); |
| } |
| |
| if (gen_buf) { |
| pipe_resource_reference(&gen_buf, NULL); |
| } |
| } |
| |
| SVGA_STATS_TIME_POP(svga_sws(hwtnl->svga)); |
| return ret; |
| } |
