| /********************************************************** |
| * 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 "svga_cmd.h" |
| |
| #include "util/u_inlines.h" |
| #include "indices/u_indices.h" |
| |
| #include "svga_hw_reg.h" |
| #include "svga_draw.h" |
| #include "svga_draw_private.h" |
| #include "svga_context.h" |
| |
| |
| #define DBG 0 |
| |
| |
| |
| |
| static enum pipe_error generate_indices( struct svga_hwtnl *hwtnl, |
| unsigned nr, |
| unsigned index_size, |
| u_generate_func generate, |
| struct pipe_resource **out_buf ) |
| { |
| struct pipe_context *pipe = &hwtnl->svga->pipe; |
| struct pipe_transfer *transfer; |
| unsigned size = index_size * nr; |
| struct pipe_resource *dst = NULL; |
| void *dst_map = NULL; |
| |
| dst = pipe_buffer_create( pipe->screen, |
| PIPE_BIND_INDEX_BUFFER, |
| PIPE_USAGE_STATIC, |
| size ); |
| if (dst == NULL) |
| goto fail; |
| |
| dst_map = pipe_buffer_map( pipe, dst, PIPE_TRANSFER_WRITE, |
| &transfer); |
| if (dst_map == NULL) |
| goto fail; |
| |
| generate( nr, |
| dst_map ); |
| |
| pipe_buffer_unmap( pipe, transfer ); |
| |
| *out_buf = dst; |
| return PIPE_OK; |
| |
| fail: |
| if (dst_map) |
| pipe_buffer_unmap( pipe, transfer ); |
| |
| if (dst) |
| pipe->screen->resource_destroy( pipe->screen, dst ); |
| |
| return PIPE_ERROR_OUT_OF_MEMORY; |
| } |
| |
| static boolean compare( unsigned cached_nr, |
| unsigned nr, |
| unsigned type ) |
| { |
| if (type == U_GENERATE_REUSABLE) |
| return cached_nr >= nr; |
| else |
| return cached_nr == nr; |
| } |
| |
| static enum pipe_error retrieve_or_generate_indices( struct svga_hwtnl *hwtnl, |
| unsigned prim, |
| unsigned gen_type, |
| unsigned gen_nr, |
| unsigned gen_size, |
| u_generate_func generate, |
| struct pipe_resource **out_buf ) |
| { |
| enum pipe_error ret = PIPE_OK; |
| int i; |
| |
| for (i = 0; i < IDX_CACHE_MAX; i++) { |
| if (hwtnl->index_cache[prim][i].buffer != NULL && |
| hwtnl->index_cache[prim][i].generate == generate) |
| { |
| if (compare(hwtnl->index_cache[prim][i].gen_nr, gen_nr, gen_type)) |
| { |
| pipe_resource_reference( out_buf, |
| hwtnl->index_cache[prim][i].buffer ); |
| |
| if (DBG) |
| debug_printf("%s retrieve %d/%d\n", __FUNCTION__, i, gen_nr); |
| |
| return PIPE_OK; |
| } |
| else if (gen_type == U_GENERATE_REUSABLE) |
| { |
| pipe_resource_reference( &hwtnl->index_cache[prim][i].buffer, |
| NULL ); |
| |
| if (DBG) |
| debug_printf("%s discard %d/%d\n", __FUNCTION__, |
| i, hwtnl->index_cache[prim][i].gen_nr); |
| |
| break; |
| } |
| } |
| } |
| |
| if (i == IDX_CACHE_MAX) |
| { |
| unsigned smallest = 0; |
| unsigned smallest_size = ~0; |
| |
| for (i = 0; i < IDX_CACHE_MAX && smallest_size; i++) { |
| if (hwtnl->index_cache[prim][i].buffer == NULL) |
| { |
| smallest = i; |
| smallest_size = 0; |
| } |
| else if (hwtnl->index_cache[prim][i].gen_nr < smallest) |
| { |
| smallest = i; |
| smallest_size = hwtnl->index_cache[prim][i].gen_nr; |
| } |
| } |
| |
| assert (smallest != IDX_CACHE_MAX); |
| |
| pipe_resource_reference( &hwtnl->index_cache[prim][smallest].buffer, |
| NULL ); |
| |
| if (DBG) |
| debug_printf("%s discard smallest %d/%d\n", __FUNCTION__, |
| smallest, smallest_size); |
| |
| i = smallest; |
| } |
| |
| |
| ret = generate_indices( hwtnl, |
| gen_nr, |
| gen_size, |
| generate, |
| out_buf ); |
| if (ret != PIPE_OK) |
| return ret; |
| |
| |
| hwtnl->index_cache[prim][i].generate = generate; |
| hwtnl->index_cache[prim][i].gen_nr = gen_nr; |
| pipe_resource_reference( &hwtnl->index_cache[prim][i].buffer, |
| *out_buf ); |
| |
| if (DBG) |
| debug_printf("%s cache %d/%d\n", __FUNCTION__, |
| i, hwtnl->index_cache[prim][i].gen_nr); |
| |
| return PIPE_OK; |
| } |
| |
| |
| |
| static enum pipe_error |
| simple_draw_arrays( struct svga_hwtnl *hwtnl, |
| unsigned prim, unsigned start, unsigned count ) |
| { |
| SVGA3dPrimitiveRange range; |
| unsigned hw_prim; |
| unsigned hw_count; |
| |
| hw_prim = svga_translate_prim(prim, count, &hw_count); |
| if (hw_count == 0) |
| return PIPE_ERROR_BAD_INPUT; |
| |
| range.primType = hw_prim; |
| range.primitiveCount = hw_count; |
| range.indexArray.surfaceId = SVGA3D_INVALID_ID; |
| range.indexArray.offset = 0; |
| range.indexArray.stride = 0; |
| range.indexWidth = 0; |
| range.indexBias = start; |
| |
| /* Min/max index should be calculated prior to applying bias, so we |
| * end up with min_index = 0, max_index = count - 1 and everybody |
| * looking at those numbers knows to adjust them by |
| * range.indexBias. |
| */ |
| return svga_hwtnl_prim( hwtnl, &range, 0, count - 1, NULL ); |
| } |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| enum pipe_error |
| svga_hwtnl_draw_arrays( struct svga_hwtnl *hwtnl, |
| unsigned prim, |
| unsigned start, |
| unsigned count) |
| { |
| unsigned gen_prim, gen_size, gen_nr, gen_type; |
| u_generate_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_generator( prim, |
| start, |
| count, |
| hwtnl->api_fillmode, |
| &gen_prim, |
| &gen_size, |
| &gen_nr, |
| &gen_func ); |
| } |
| else { |
| gen_type = u_index_generator( svga_hw_prims, |
| prim, |
| start, |
| count, |
| hwtnl->api_pv, |
| hwtnl->hw_pv, |
| &gen_prim, |
| &gen_size, |
| &gen_nr, |
| &gen_func ); |
| } |
| |
| if (gen_type == U_GENERATE_LINEAR) { |
| return simple_draw_arrays( hwtnl, gen_prim, start, count ); |
| } |
| else { |
| struct pipe_resource *gen_buf = NULL; |
| |
| /* Need to draw as indexed primitive. |
| * Potentially need to run the gen func to build an index buffer. |
| */ |
| ret = retrieve_or_generate_indices( hwtnl, |
| prim, |
| gen_type, |
| 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, |
| start, |
| 0, |
| count - 1, |
| gen_prim, |
| 0, |
| gen_nr ); |
| |
| if (ret != PIPE_OK) |
| goto done; |
| |
| done: |
| if (gen_buf) |
| pipe_resource_reference( &gen_buf, NULL ); |
| |
| return ret; |
| } |
| } |
| |
