src/gallium/drivers/svga/svga_streamout.h

   1 /**********************************************************
   2  * Copyright 2014 VMware, Inc.  All rights reserved.
   3  *
   4  * Permission is hereby granted, free of charge, to any person
   5  * obtaining a copy of this software and associated documentation
   6  * files (the "Software"), to deal in the Software without
   7  * restriction, including without limitation the rights to use, copy,
   8  * modify, merge, publish, distribute, sublicense, and/or sell copies
   9  * of the Software, and to permit persons to whom the Software is
  10  * furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice shall be
  13  * included in all copies or substantial portions of the Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  16  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  17  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  18  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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  21  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  22  * SOFTWARE.
  23  *
  24  **********************************************************/
  25
  26 #ifndef SVGA_STREAMOUT_H
  27 #define SVGA_STREAMOUT_H
  28
  29 struct svga_shader;
  30
  31 struct svga_stream_output {
  32    struct pipe_stream_output_info info;
  33    unsigned pos_out_index;                  // position output index
  34    unsigned id;
  35    unsigned streammask;                     // bitmask to specify which streams are enabled
  36    unsigned buffer_stream;
  37    struct svga_winsys_buffer *declBuf;
  38 };
  39
  40 struct svga_stream_output *
  41 svga_create_stream_output(struct svga_context *svga,
  42                           struct svga_shader *shader,
  43                           const struct pipe_stream_output_info *info);
  44
  45 enum pipe_error
  46 svga_set_stream_output(struct svga_context *svga,
  47                        struct svga_stream_output *streamout);
  48
  49 void
  50 svga_delete_stream_output(struct svga_context *svga,
  51                           struct svga_stream_output *streamout);
  52
  53 enum pipe_error
  54 svga_rebind_stream_output_targets(struct svga_context *svga);
  55
  56 void
  57 svga_create_stream_output_queries(struct svga_context *svga);
  58
  59 void
  60 svga_destroy_stream_output_queries(struct svga_context *svga);
  61
  62 void
  63 svga_begin_stream_output_queries(struct svga_context *svga, unsigned mask);
  64
  65 void
  66 svga_end_stream_output_queries(struct svga_context *svga, unsigned mask);
  67
  68 unsigned
  69 svga_get_primcount_from_stream_output(struct svga_context *svga,
  70                                       unsigned stream);
  71
  72 #endif /* SVGA_STREAMOUT_H */