src/gallium/drivers/llvmpipe/lp_setup_context.h

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  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 /* We're limited to 2K by 2K for 32bit fixed point rasterization.
  44  * Will need a 64-bit version for larger framebuffers.
  45  */
  46 #define MAXHEIGHT 2048
  47 #define MAXWIDTH 2048
  48 #define TILES_X (MAXWIDTH / TILE_SIZE)
  49 #define TILES_Y (MAXHEIGHT / TILE_SIZE)
  50
  51
  52 #define LP_SETUP_NEW_FS          0x01
  53 #define LP_SETUP_NEW_CONSTANTS   0x02
  54 #define LP_SETUP_NEW_BLEND_COLOR 0x04
  55
  56
  57 /**
  58  * Point/line/triangle setup context.
  59  * Note: "stored" below indicates data which is stored in the bins,
  60  * not arbitrary malloc'd memory.
  61  */
  62 struct setup_context {
  63
  64    struct lp_rasterizer *rast;
  65
  66    /**
  67     * Per-bin data goes into the 'tile' bins.
  68     * Shared bin data goes into the 'data' buffer.
  69     * When there are multiple threads, will want to double-buffer the
  70     * bin arrays:
  71     */
  72    struct cmd_bin tile[TILES_X][TILES_Y];
  73    struct data_block_list data;
  74
  75    /* size of framebuffer, in tiles */
  76    unsigned tiles_x;
  77    unsigned tiles_y;
  78
  79    boolean ccw_is_frontface;
  80    unsigned cullmode;
  81
  82    const struct pipe_framebuffer_state *fb;
  83
  84    struct {
  85       unsigned flags;
  86       union lp_rast_cmd_arg color;    /**< lp_rast_clear_color() cmd */
  87       union lp_rast_cmd_arg zstencil; /**< lp_rast_clear_zstencil() cmd */
  88    } clear;
  89
  90    enum {
  91       SETUP_FLUSHED,
  92       SETUP_CLEARED,
  93       SETUP_ACTIVE
  94    } state;
  95
  96    struct {
  97       struct lp_shader_input input[PIPE_MAX_ATTRIBS];
  98       unsigned nr_inputs;
  99
 100       const struct lp_rast_state *stored; /**< what's in the bins */
 101       struct lp_rast_state current;  /**< currently set state */
 102    } fs;
 103
 104    /** fragment shader constants */
 105    struct {
 106       struct pipe_buffer *current;
 107       unsigned stored_size;
 108       const void *stored_data;
 109    } constants;
 110
 111    struct {
 112       struct pipe_blend_color current;
 113       uint8_t *stored;
 114    } blend_color;
 115
 116    unsigned dirty;   /**< bitmask of LP_SETUP_x bits */
 117
 118    void (*point)( struct setup_context *,
 119                   const float (*v0)[4]);
 120
 121    void (*line)( struct setup_context *,
 122                  const float (*v0)[4],
 123                  const float (*v1)[4]);
 124
 125    void (*triangle)( struct setup_context *,
 126                      const float (*v0)[4],
 127                      const float (*v1)[4],
 128                      const float (*v2)[4]);
 129 };
 130
 131 void lp_setup_choose_triangle( struct setup_context *setup );
 132 void lp_setup_choose_line( struct setup_context *setup );
 133 void lp_setup_choose_point( struct setup_context *setup );
 134
 135
 136 #endif