src/gallium/auxiliary/vl/vl_vertex_buffers.h

   1 /**************************************************************************
   2  *
   3  * Copyright 2010 Christian König
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27 #ifndef vl_vertex_buffers_h
  28 #define vl_vertex_buffers_h
  29
  30 #include <pipe/p_state.h>
  31 #include <pipe/p_video_state.h>
  32
  33 #include "vl_types.h"
  34
  35 /* vertex buffers act as a todo list
  36  * uploading all the usefull informations to video ram
  37  * so a vertex shader can work with them
  38  */
  39
  40 /* inputs to the vertex shaders */
  41 enum VS_INPUT
  42 {
  43    VS_I_RECT,
  44    VS_I_VPOS,
  45
  46    VS_I_FLAGS,
  47    VS_I_EB,
  48
  49    VS_I_MV_TOP = VS_I_FLAGS,
  50    VS_I_MV_BOTTOM = VS_I_EB,
  51
  52    NUM_VS_INPUTS
  53 };
  54
  55 struct vl_vertex_buffer
  56 {
  57    unsigned size;
  58    unsigned num_not_empty;
  59    unsigned num_empty;
  60    struct pipe_resource *resource;
  61    struct pipe_transfer *transfer;
  62    struct vl_vertex_stream *start;
  63    struct vl_vertex_stream *end;
  64 };
  65
  66 struct pipe_vertex_buffer vl_vb_upload_quads(struct pipe_context *pipe,
  67                                              unsigned blocks_x, unsigned blocks_y);
  68
  69 void *vl_vb_get_ves_eb(struct pipe_context *pipe, int component);
  70
  71 void *vl_vb_get_ves_mv(struct pipe_context *pipe, int motionvector);
  72
  73 struct pipe_vertex_buffer vl_vb_init(struct vl_vertex_buffer *buffer,
  74                                      struct pipe_context *pipe,
  75                                      unsigned max_blocks);
  76
  77 void vl_vb_map(struct vl_vertex_buffer *buffer, struct pipe_context *pipe);
  78
  79 void vl_vb_add_block(struct vl_vertex_buffer *buffer, struct pipe_mpeg12_macroblock *mb,
  80                      const unsigned (*empty_block_mask)[3][2][2]);
  81
  82 void vl_vb_unmap(struct vl_vertex_buffer *buffer, struct pipe_context *pipe);
  83
  84 void vl_vb_restart(struct vl_vertex_buffer *buffer,
  85                    unsigned *not_empty_start_instance, unsigned *not_empty_num_instances,
  86                    unsigned *empty_start_instance, unsigned *empty_num_instances);
  87
  88 void vl_vb_cleanup(struct vl_vertex_buffer *buffer);
  89
  90 #endif /* vl_vertex_buffers_h */