src/gallium/drivers/llvmpipe/lp_setup_context.h

   1 /**************************************************************************
   2  *
   3  * Copyright 2007-2009 VMware, Inc.
   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 VMWARE 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
  28
  29 /**
  30  * The setup code is concerned with point/line/triangle setup and
  31  * putting commands/data into the bins.
  32  */
  33
  34
  35 #ifndef LP_SETUP_CONTEXT_H
  36 #define LP_SETUP_CONTEXT_H
  37
  38 #include "lp_setup.h"
  39 #include "lp_rast.h"
  40 #include "lp_tile_soa.h"        /* for TILE_SIZE */
  41 #include "lp_bin.h"
  42
  43
  44 #define LP_SETUP_NEW_FS          0x01
  45 #define LP_SETUP_NEW_CONSTANTS   0x02
  46 #define LP_SETUP_NEW_BLEND_COLOR 0x04
  47
  48
  49 /**
  50  * Point/line/triangle setup context.
  51  * Note: "stored" below indicates data which is stored in the bins,
  52  * not arbitrary malloc'd memory.
  53  */
  54 struct setup_context {
  55
  56    struct lp_rasterizer *rast;
  57
  58    struct lp_bins bins;
  59
  60    /* size of framebuffer, in tiles */
  61    unsigned tiles_x;
  62    unsigned tiles_y;
  63
  64    boolean ccw_is_frontface;
  65    unsigned cullmode;
  66
  67    const struct pipe_framebuffer_state *fb;
  68
  69    struct {
  70       unsigned flags;
  71       union lp_rast_cmd_arg color;    /**< lp_rast_clear_color() cmd */
  72       union lp_rast_cmd_arg zstencil; /**< lp_rast_clear_zstencil() cmd */
  73    } clear;
  74
  75    enum {
  76       SETUP_FLUSHED,
  77       SETUP_CLEARED,
  78       SETUP_ACTIVE
  79    } state;
  80
  81    struct {
  82       struct lp_shader_input input[PIPE_MAX_ATTRIBS];
  83       unsigned nr_inputs;
  84
  85       const struct lp_rast_state *stored; /**< what's in the bins */
  86       struct lp_rast_state current;  /**< currently set state */
  87    } fs;
  88
  89    /** fragment shader constants */
  90    struct {
  91       struct pipe_buffer *current;
  92       unsigned stored_size;
  93       const void *stored_data;
  94    } constants;
  95
  96    struct {
  97       struct pipe_blend_color current;
  98       uint8_t *stored;
  99    } blend_color;
 100
 101    unsigned dirty;   /**< bitmask of LP_SETUP_x bits */
 102
 103    void (*point)( struct setup_context *,
 104                   const float (*v0)[4]);
 105
 106    void (*line)( struct setup_context *,
 107                  const float (*v0)[4],
 108                  const float (*v1)[4]);
 109
 110    void (*triangle)( struct setup_context *,
 111                      const float (*v0)[4],
 112                      const float (*v1)[4],
 113                      const float (*v2)[4]);
 114 };
 115
 116 void lp_setup_choose_triangle( struct setup_context *setup );
 117 void lp_setup_choose_line( struct setup_context *setup );
 118 void lp_setup_choose_point( struct setup_context *setup );
 119
 120
 121 #endif