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_scene.h"
  42
  43 #include "draw/draw_vbuf.h"
  44
  45 #define LP_SETUP_NEW_FS          0x01
  46 #define LP_SETUP_NEW_CONSTANTS   0x02
  47 #define LP_SETUP_NEW_BLEND_COLOR 0x04
  48 #define LP_SETUP_NEW_SCISSOR     0x08
  49
  50
  51 struct lp_scene_queue;
  52
  53
  54 /** Max number of scenes */
  55 #define MAX_SCENES 2
  56
  57
  58
  59 /**
  60  * Point/line/triangle setup context.
  61  * Note: "stored" below indicates data which is stored in the bins,
  62  * not arbitrary malloc'd memory.
  63  *
  64  *
  65  * Subclass of vbuf_render, plugged directly into the draw module as
  66  * the rendering backend.
  67  */
  68 struct setup_context
  69 {
  70    struct vbuf_render base;
  71
  72    struct vertex_info *vertex_info;
  73    uint prim;
  74    uint vertex_size;
  75    uint nr_vertices;
  76    uint vertex_buffer_size;
  77    void *vertex_buffer;
  78
  79    /* Final pipeline stage for draw module.  Draw module should
  80     * create/install this itself now.
  81     */
  82    struct draw_stage *vbuf;
  83    struct lp_rasterizer *rast;
  84    struct lp_scene *scenes[MAX_SCENES];  /**< all the scenes */
  85    struct lp_scene *scene;               /**< current scene being built */
  86    struct lp_scene_queue *empty_scenes;  /**< queue of empty scenes */
  87
  88    boolean flatshade_first;
  89    boolean ccw_is_frontface;
  90    boolean scissor_test;
  91    unsigned cullmode;
  92
  93    struct pipe_framebuffer_state fb;
  94
  95    struct {
  96       unsigned flags;
  97       union lp_rast_cmd_arg color;    /**< lp_rast_clear_color() cmd */
  98       union lp_rast_cmd_arg zstencil; /**< lp_rast_clear_zstencil() cmd */
  99    } clear;
 100
 101    enum {
 102       SETUP_FLUSHED,
 103       SETUP_CLEARED,
 104       SETUP_ACTIVE
 105    } state;
 106
 107    struct {
 108       struct lp_shader_input input[PIPE_MAX_ATTRIBS];
 109       unsigned nr_inputs;
 110
 111       const struct lp_rast_state *stored; /**< what's in the scene */
 112       struct lp_rast_state current;  /**< currently set state */
 113    } fs;
 114
 115    /** fragment shader constants */
 116    struct {
 117       struct pipe_buffer *current;
 118       unsigned stored_size;
 119       const void *stored_data;
 120    } constants;
 121
 122    struct {
 123       struct pipe_blend_color current;
 124       uint8_t *stored;
 125    } blend_color;
 126
 127    struct {
 128       struct pipe_scissor_state current;
 129       const void *stored;
 130    } scissor;
 131
 132    unsigned dirty;   /**< bitmask of LP_SETUP_NEW_x bits */
 133
 134    void (*point)( struct setup_context *,
 135                   const float (*v0)[4]);
 136
 137    void (*line)( struct setup_context *,
 138                  const float (*v0)[4],
 139                  const float (*v1)[4]);
 140
 141    void (*triangle)( struct setup_context *,
 142                      const float (*v0)[4],
 143                      const float (*v1)[4],
 144                      const float (*v2)[4]);
 145 };
 146
 147 void lp_setup_choose_triangle( struct setup_context *setup );
 148 void lp_setup_choose_line( struct setup_context *setup );
 149 void lp_setup_choose_point( struct setup_context *setup );
 150
 151 struct lp_scene *lp_setup_get_current_scene(struct setup_context *setup);
 152
 153 void lp_setup_init_vbuf(struct setup_context *setup);
 154
 155 void lp_setup_update_state( struct setup_context *setup );
 156
 157 void lp_setup_destroy( struct setup_context *setup );
 158
 159 #endif