src/gallium/drivers/llvmpipe/lp_setup.h

   1 /**************************************************************************
   2  *
   3  * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
   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 LP_SETUP_H
  28 #define LP_SETUP_H
  29
  30 #include "pipe/p_compiler.h"
  31
  32 enum lp_interp {
  33    LP_INTERP_CONSTANT,
  34    LP_INTERP_LINEAR,
  35    LP_INTERP_PERSPECTIVE,
  36    LP_INTERP_POSITION,
  37    LP_INTERP_FACING
  38 };
  39
  40 /* Describes how to generate all the fragment shader inputs from the
  41  * the vertices passed into our triangle/line/point functions.
  42  *
  43  * Vertices are treated as an array of float[4] values, indexed by
  44  * src_index.
  45  */
  46 struct lp_shader_input {
  47    enum lp_interp interp;       /* how to interpolate values */
  48    unsigned src_index;          /* where to find values in incoming vertices */
  49 };
  50
  51 struct pipe_texture;
  52 struct pipe_surface;
  53 struct setup_context;
  54 struct lp_jit_context;
  55
  56 struct setup_context *
  57 lp_setup_create( void );
  58
  59 void
  60 lp_setup_clear(struct setup_context *setup,
  61                const float *clear_color,
  62                double clear_depth,
  63                unsigned clear_stencil,
  64                unsigned flags);
  65
  66 void
  67 lp_setup_tri(struct setup_context *setup,
  68              const float (*v0)[4],
  69              const float (*v1)[4],
  70              const float (*v2)[4]);
  71
  72 void
  73 lp_setup_line(struct setup_context *setup,
  74               const float (*v0)[4],
  75               const float (*v1)[4]);
  76
  77 void
  78 lp_setup_point( struct setup_context *setup,
  79                 const float (*v0)[4] );
  80
  81
  82 void
  83 lp_setup_flush( struct setup_context *setup,
  84                 unsigned flags );
  85
  86
  87 void
  88 lp_setup_bind_framebuffer( struct setup_context *setup,
  89                            struct pipe_surface *color,
  90                            struct pipe_surface *zstencil );
  91
  92 void
  93 lp_setup_set_triangle_state( struct setup_context *setup,
  94                              unsigned cullmode,
  95                              boolean front_is_ccw );
  96
  97 void
  98 lp_setup_set_fs_inputs( struct setup_context *setup,
  99                         const struct lp_shader_input *interp,
 100                         unsigned nr );
 101
 102 void
 103 lp_setup_set_shader_state( struct setup_context *setup,
 104                            const struct lp_jit_context *jc );
 105
 106 boolean
 107 lp_setup_is_texture_referenced( struct setup_context *setup,
 108                                 const struct pipe_texture *texture );
 109
 110
 111 void
 112 lp_setup_destroy( struct setup_context *setup );
 113
 114 #endif