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 sprite;
  78    uint vertex_buffer_size;
  79    void *vertex_buffer;
  80
  81    /* Final pipeline stage for draw module.  Draw module should
  82     * create/install this itself now.
  83     */
  84    struct draw_stage *vbuf;
  85    unsigned num_threads;
  86    struct lp_scene *scenes[MAX_SCENES];  /**< all the scenes */
  87    struct lp_scene *scene;               /**< current scene being built */
  88    struct lp_scene_queue *empty_scenes;  /**< queue of empty scenes */
  89
  90    boolean flatshade_first;
  91    boolean ccw_is_frontface;
  92    boolean scissor_test;
  93    boolean point_size_per_vertex;
  94    unsigned cullmode;
  95    float pixel_offset;
  96    float line_width;
  97    float point_size;
  98    float psize;
  99
 100    struct pipe_framebuffer_state fb;
 101    struct u_rect framebuffer;
 102    struct u_rect scissor;
 103    struct u_rect draw_region;   /* intersection of fb & scissor */
 104
 105    struct {
 106       unsigned flags;
 107       union lp_rast_cmd_arg color;    /**< lp_rast_clear_color() cmd */
 108       struct lp_rast_clearzs clearzs; /**< lp_rast_clear_zstencil() cmd */
 109    } clear;
 110
 111    enum setup_state {
 112       SETUP_FLUSHED,    /**< scene is null */
 113       SETUP_EMPTY,      /**< scene exists but has only state changes */
 114       SETUP_CLEARED,    /**< scene exists but has only clears */
 115       SETUP_ACTIVE      /**< scene exists and has at least one draw/query */
 116    } state;
 117
 118    struct {
 119       struct lp_shader_input input[PIPE_MAX_ATTRIBS];
 120       unsigned nr_inputs;
 121
 122       const struct lp_rast_state *stored; /**< what's in the scene */
 123       struct lp_rast_state current;  /**< currently set state */
 124       struct pipe_resource *current_tex[PIPE_MAX_SAMPLERS];
 125    } fs;
 126
 127    /** fragment shader constants */
 128    struct {
 129       struct pipe_resource *current;
 130       unsigned stored_size;
 131       const void *stored_data;
 132    } constants;
 133
 134    struct {
 135       struct pipe_blend_color current;
 136       uint8_t *stored;
 137    } blend_color;
 138
 139
 140    unsigned dirty;   /**< bitmask of LP_SETUP_NEW_x bits */
 141
 142    void (*point)( struct lp_setup_context *,
 143                   const float (*v0)[4]);
 144
 145    void (*line)( struct lp_setup_context *,
 146                  const float (*v0)[4],
 147                  const float (*v1)[4]);
 148
 149    void (*triangle)( struct lp_setup_context *,
 150                      const float (*v0)[4],
 151                      const float (*v1)[4],
 152                      const float (*v2)[4]);
 153 };
 154
 155 void lp_setup_choose_triangle( struct lp_setup_context *setup );
 156 void lp_setup_choose_line( struct lp_setup_context *setup );
 157 void lp_setup_choose_point( struct lp_setup_context *setup );
 158
 159 struct lp_scene *lp_setup_get_current_scene(struct lp_setup_context *setup);
 160
 161 void lp_setup_init_vbuf(struct lp_setup_context *setup);
 162
 163 void lp_setup_update_state( struct lp_setup_context *setup );
 164
 165 void lp_setup_destroy( struct lp_setup_context *setup );
 166
 167 void
 168 lp_setup_print_triangle(struct lp_setup_context *setup,
 169                         const float (*v0)[4],
 170                         const float (*v1)[4],
 171                         const float (*v2)[4]);
 172
 173 void
 174 lp_setup_print_vertex(struct lp_setup_context *setup,
 175                       const char *name,
 176                       const float (*v)[4]);
 177
 178
 179 struct lp_rast_triangle *
 180 lp_setup_alloc_triangle(struct lp_scene *scene,
 181                         unsigned nr_inputs,
 182                         unsigned nr_planes,
 183                         unsigned *tri_size);
 184
 185 void
 186 lp_setup_bin_triangle( struct lp_setup_context *setup,
 187                        struct lp_rast_triangle *tri,
 188                        const struct u_rect *bbox,
 189                        int nr_planes );
 190
 191 #endif
 192