297 lines
9.0 KiB
C
297 lines
9.0 KiB
C
/**********************************************************
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* Copyright 2008-2009 VMware, Inc. All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use, copy,
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* modify, merge, publish, distribute, sublicense, and/or sell copies
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* of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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**********************************************************/
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#include "svga_cmd.h"
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#include "pipe/p_inlines.h"
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#include "indices/u_indices.h"
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#include "svga_hw_reg.h"
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#include "svga_draw.h"
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#include "svga_draw_private.h"
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#include "svga_context.h"
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#define DBG 0
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static enum pipe_error generate_indices( struct svga_hwtnl *hwtnl,
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unsigned nr,
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unsigned index_size,
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u_generate_func generate,
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struct pipe_buffer **out_buf )
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{
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struct pipe_screen *screen = hwtnl->svga->pipe.screen;
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unsigned size = index_size * nr;
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struct pipe_buffer *dst = NULL;
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void *dst_map = NULL;
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dst = screen->buffer_create( screen, 32,
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PIPE_BUFFER_USAGE_INDEX |
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PIPE_BUFFER_USAGE_CPU_WRITE |
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PIPE_BUFFER_USAGE_GPU_READ,
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size );
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if (dst == NULL)
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goto fail;
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dst_map = pipe_buffer_map( screen, dst, PIPE_BUFFER_USAGE_CPU_WRITE );
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if (dst_map == NULL)
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goto fail;
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generate( nr,
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dst_map );
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pipe_buffer_unmap( screen, dst );
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*out_buf = dst;
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return PIPE_OK;
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fail:
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if (dst_map)
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screen->buffer_unmap( screen, dst );
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if (dst)
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screen->buffer_destroy( dst );
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return PIPE_ERROR_OUT_OF_MEMORY;
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}
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static boolean compare( unsigned cached_nr,
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unsigned nr,
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unsigned type )
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{
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if (type == U_GENERATE_REUSABLE)
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return cached_nr >= nr;
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else
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return cached_nr == nr;
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}
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static enum pipe_error retrieve_or_generate_indices( struct svga_hwtnl *hwtnl,
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unsigned prim,
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unsigned gen_type,
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unsigned gen_nr,
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unsigned gen_size,
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u_generate_func generate,
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struct pipe_buffer **out_buf )
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{
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enum pipe_error ret = PIPE_OK;
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int i;
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for (i = 0; i < IDX_CACHE_MAX; i++) {
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if (hwtnl->index_cache[prim][i].buffer != NULL &&
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hwtnl->index_cache[prim][i].generate == generate)
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{
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if (compare(hwtnl->index_cache[prim][i].gen_nr, gen_nr, gen_type))
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{
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pipe_buffer_reference( out_buf,
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hwtnl->index_cache[prim][i].buffer );
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if (DBG)
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debug_printf("%s retrieve %d/%d\n", __FUNCTION__, i, gen_nr);
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return PIPE_OK;
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}
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else if (gen_type == U_GENERATE_REUSABLE)
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{
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pipe_buffer_reference( &hwtnl->index_cache[prim][i].buffer,
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NULL );
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if (DBG)
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debug_printf("%s discard %d/%d\n", __FUNCTION__,
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i, hwtnl->index_cache[prim][i].gen_nr);
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break;
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}
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}
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}
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if (i == IDX_CACHE_MAX)
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{
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unsigned smallest = 0;
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unsigned smallest_size = ~0;
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for (i = 0; i < IDX_CACHE_MAX && smallest_size; i++) {
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if (hwtnl->index_cache[prim][i].buffer == NULL)
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{
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smallest = i;
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smallest_size = 0;
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}
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else if (hwtnl->index_cache[prim][i].gen_nr < smallest)
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{
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smallest = i;
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smallest_size = hwtnl->index_cache[prim][i].gen_nr;
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}
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}
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assert (smallest != IDX_CACHE_MAX);
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pipe_buffer_reference( &hwtnl->index_cache[prim][smallest].buffer,
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NULL );
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if (DBG)
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debug_printf("%s discard smallest %d/%d\n", __FUNCTION__,
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smallest, smallest_size);
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i = smallest;
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}
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ret = generate_indices( hwtnl,
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gen_nr,
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gen_size,
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generate,
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out_buf );
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if (ret != PIPE_OK)
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return ret;
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hwtnl->index_cache[prim][i].generate = generate;
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hwtnl->index_cache[prim][i].gen_nr = gen_nr;
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pipe_buffer_reference( &hwtnl->index_cache[prim][i].buffer,
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*out_buf );
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if (DBG)
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debug_printf("%s cache %d/%d\n", __FUNCTION__,
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i, hwtnl->index_cache[prim][i].gen_nr);
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return PIPE_OK;
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}
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static enum pipe_error
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simple_draw_arrays( struct svga_hwtnl *hwtnl,
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unsigned prim, unsigned start, unsigned count )
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{
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SVGA3dPrimitiveRange range;
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unsigned hw_prim;
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unsigned hw_count;
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hw_prim = svga_translate_prim(prim, count, &hw_count);
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if (hw_count == 0)
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return PIPE_ERROR_BAD_INPUT;
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range.primType = hw_prim;
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range.primitiveCount = hw_count;
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range.indexArray.surfaceId = SVGA3D_INVALID_ID;
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range.indexArray.offset = 0;
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range.indexArray.stride = 0;
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range.indexWidth = 0;
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range.indexBias = start;
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/* Min/max index should be calculated prior to applying bias, so we
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* end up with min_index = 0, max_index = count - 1 and everybody
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* looking at those numbers knows to adjust them by
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* range.indexBias.
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*/
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return svga_hwtnl_prim( hwtnl, &range, 0, count - 1, NULL );
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}
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enum pipe_error
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svga_hwtnl_draw_arrays( struct svga_hwtnl *hwtnl,
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unsigned prim,
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unsigned start,
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unsigned count)
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{
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unsigned gen_prim, gen_size, gen_nr, gen_type;
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u_generate_func gen_func;
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enum pipe_error ret = PIPE_OK;
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if (hwtnl->api_fillmode != PIPE_POLYGON_MODE_FILL &&
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prim >= PIPE_PRIM_TRIANGLES)
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{
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gen_type = u_unfilled_generator( prim,
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start,
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count,
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hwtnl->api_fillmode,
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&gen_prim,
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&gen_size,
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&gen_nr,
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&gen_func );
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}
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else {
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gen_type = u_index_generator( svga_hw_prims,
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prim,
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start,
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count,
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hwtnl->api_pv,
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hwtnl->hw_pv,
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&gen_prim,
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&gen_size,
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&gen_nr,
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&gen_func );
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}
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if (gen_type == U_GENERATE_LINEAR) {
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return simple_draw_arrays( hwtnl, gen_prim, start, count );
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}
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else {
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struct pipe_buffer *gen_buf = NULL;
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/* Need to draw as indexed primitive.
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* Potentially need to run the gen func to build an index buffer.
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*/
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ret = retrieve_or_generate_indices( hwtnl,
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prim,
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gen_type,
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gen_nr,
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gen_size,
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gen_func,
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&gen_buf );
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if (ret)
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goto done;
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ret = svga_hwtnl_simple_draw_range_elements( hwtnl,
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gen_buf,
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gen_size,
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0,
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count - 1,
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gen_prim,
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0,
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gen_nr,
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start );
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if (ret)
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goto done;
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done:
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if (gen_buf)
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pipe_buffer_reference( &gen_buf, NULL );
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return ret;
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}
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}
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