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 #include "util/u_rect.h"
  45
  46 #define LP_SETUP_NEW_FS          0x01
  47 #define LP_SETUP_NEW_CONSTANTS   0x02
  48 #define LP_SETUP_NEW_BLEND_COLOR 0x04
  49 #define LP_SETUP_NEW_SCISSOR     0x08
  50
  51
  52 struct lp_scene_queue;
  53
  54
  55 /** Max number of scenes */
  56 #define MAX_SCENES 2
  57
  58
  59
  60 /**
  61  * Point/line/triangle setup context.
  62  * Note: "stored" below indicates data which is stored in the bins,
  63  * not arbitrary malloc'd memory.
  64  *
  65  *
  66  * Subclass of vbuf_render, plugged directly into the draw module as
  67  * the rendering backend.
  68  */
  69 struct lp_setup_context
  70 {
  71    struct vbuf_render base;
  72
  73    struct vertex_info *vertex_info;
  74    uint prim;
  75    uint vertex_size;
  76    uint nr_vertices;
  77    uint vertex_buffer_size;
  78    void *vertex_buffer;
  79
  80    /* Final pipeline stage for draw module.  Draw module should
  81     * create/install this itself now.
  82     */
  83    struct draw_stage *vbuf;
  84    unsigned num_threads;
  85    struct lp_scene *scenes[MAX_SCENES];  /**< all the scenes */
  86    struct lp_scene *scene;               /**< current scene being built */
  87    struct lp_scene_queue *empty_scenes;  /**< queue of empty scenes */
  88
  89    boolean flatshade_first;
  90    boolean ccw_is_frontface;
  91    boolean scissor_test;
  92    unsigned cullmode;
  93    float pixel_offset;
  94    float line_width;
  95    float point_size;
  96    float psize;
  97
  98    struct pipe_framebuffer_state fb;
  99    struct u_rect framebuffer;
 100    struct u_rect scissor;
 101    struct u_rect draw_region;   /* intersection of fb & scissor */
 102
 103    struct {
 104       unsigned flags;
 105       union lp_rast_cmd_arg color;    /**< lp_rast_clear_color() cmd */
 106       struct lp_rast_clearzs clearzs; /**< lp_rast_clear_zstencil() cmd */
 107    } clear;
 108
 109    enum setup_state {
 110       SETUP_FLUSHED,    /**< scene is null */
 111       SETUP_EMPTY,      /**< scene exists but has only state changes */
 112       SETUP_CLEARED,    /**< scene exists but has only clears */
 113       SETUP_ACTIVE      /**< scene exists and has at least one draw/query */
 114    } state;
 115
 116    struct {
 117       struct lp_shader_input input[PIPE_MAX_ATTRIBS];
 118       unsigned nr_inputs;
 119
 120       const struct lp_rast_state *stored; /**< what's in the scene */
 121       struct lp_rast_state current;  /**< currently set state */
 122       struct pipe_resource *current_tex[PIPE_MAX_SAMPLERS];
 123    } fs;
 124
 125    /** fragment shader constants */
 126    struct {
 127       struct pipe_resource *current;
 128       unsigned stored_size;
 129       const void *stored_data;
 130    } constants;
 131
 132    struct {
 133       struct pipe_blend_color current;
 134       uint8_t *stored;
 135    } blend_color;
 136
 137
 138    unsigned dirty;   /**< bitmask of LP_SETUP_NEW_x bits */
 139
 140    void (*point)( struct lp_setup_context *,
 141                   const float (*v0)[4]);
 142
 143    void (*line)( struct lp_setup_context *,
 144                  const float (*v0)[4],
 145                  const float (*v1)[4]);
 146
 147    void (*triangle)( struct lp_setup_context *,
 148                      const float (*v0)[4],
 149                      const float (*v1)[4],
 150                      const float (*v2)[4]);
 151 };
 152
 153 void lp_setup_choose_triangle( struct lp_setup_context *setup );
 154 void lp_setup_choose_line( struct lp_setup_context *setup );
 155 void lp_setup_choose_point( struct lp_setup_context *setup );
 156
 157 struct lp_scene *lp_setup_get_current_scene(struct lp_setup_context *setup);
 158
 159 void lp_setup_init_vbuf(struct lp_setup_context *setup);
 160
 161 void lp_setup_update_state( struct lp_setup_context *setup );
 162
 163 void lp_setup_destroy( struct lp_setup_context *setup );
 164
 165 void
 166 lp_setup_print_triangle(struct lp_setup_context *setup,
 167                         const float (*v0)[4],
 168                         const float (*v1)[4],
 169                         const float (*v2)[4]);
 170
 171 void
 172 lp_setup_print_vertex(struct lp_setup_context *setup,
 173                       const char *name,
 174                       const float (*v)[4]);
 175
 176
 177 struct lp_rast_triangle *
 178 lp_setup_alloc_triangle(struct lp_scene *scene,
 179                         unsigned nr_inputs,
 180                         unsigned nr_planes,
 181                         unsigned *tri_size);
 182
 183 void
 184 lp_setup_bin_triangle( struct lp_setup_context *setup,
 185                        struct lp_rast_triangle *tri,
 186                        const struct u_rect *bbox,
 187                        int nr_planes );
 188
 189 #endif
 190