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 lp_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    float pixel_offset;
  93
  94    struct pipe_framebuffer_state fb;
  95
  96    struct {
  97       unsigned flags;
  98       union lp_rast_cmd_arg color;    /**< lp_rast_clear_color() cmd */
  99       union lp_rast_cmd_arg zstencil; /**< lp_rast_clear_zstencil() cmd */
 100    } clear;
 101
 102    enum {
 103       SETUP_FLUSHED,
 104       SETUP_CLEARED,
 105       SETUP_ACTIVE
 106    } state;
 107
 108    struct {
 109       struct lp_shader_input input[PIPE_MAX_ATTRIBS];
 110       unsigned nr_inputs;
 111
 112       const struct lp_rast_state *stored; /**< what's in the scene */
 113       struct lp_rast_state current;  /**< currently set state */
 114       struct pipe_texture *current_tex[PIPE_MAX_SAMPLERS];
 115    } fs;
 116
 117    /** fragment shader constants */
 118    struct {
 119       struct pipe_buffer *current;
 120       unsigned stored_size;
 121       const void *stored_data;
 122    } constants;
 123
 124    struct {
 125       struct pipe_blend_color current;
 126       uint8_t *stored;
 127    } blend_color;
 128
 129    struct {
 130       struct pipe_scissor_state current;
 131       const void *stored;
 132    } scissor;
 133
 134    unsigned dirty;   /**< bitmask of LP_SETUP_NEW_x bits */
 135
 136    void (*point)( struct lp_setup_context *,
 137                   const float (*v0)[4]);
 138
 139    void (*line)( struct lp_setup_context *,
 140                  const float (*v0)[4],
 141                  const float (*v1)[4]);
 142
 143    void (*triangle)( struct lp_setup_context *,
 144                      const float (*v0)[4],
 145                      const float (*v1)[4],
 146                      const float (*v2)[4]);
 147 };
 148
 149 void lp_setup_choose_triangle( struct lp_setup_context *setup );
 150 void lp_setup_choose_line( struct lp_setup_context *setup );
 151 void lp_setup_choose_point( struct lp_setup_context *setup );
 152
 153 struct lp_scene *lp_setup_get_current_scene(struct lp_setup_context *setup);
 154
 155 void lp_setup_init_vbuf(struct lp_setup_context *setup);
 156
 157 void lp_setup_update_state( struct lp_setup_context *setup );
 158
 159 void lp_setup_destroy( struct lp_setup_context *setup );
 160
 161 #endif