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_scene.h"
  41 #include "lp_bld_interp.h"      /* for struct lp_shader_input */
  42
  43 #include "draw/draw_vbuf.h"
  44 #include "util/u_rect.h"
  45 #include "util/u_pack_color.h"
  46
  47 #define LP_SETUP_NEW_FS          0x01
  48 #define LP_SETUP_NEW_CONSTANTS   0x02
  49 #define LP_SETUP_NEW_BLEND_COLOR 0x04
  50 #define LP_SETUP_NEW_SCISSOR     0x08
  51 #define LP_SETUP_NEW_VIEWPORTS   0x10
  52
  53
  54 struct lp_setup_variant;
  55
  56
  57 /** Max number of scenes */
  58 /* XXX: make multiple scenes per context work, see lp_setup_rasterize_scene */
  59 #define MAX_SCENES 1
  60
  61
  62
  63 /**
  64  * Point/line/triangle setup context.
  65  * Note: "stored" below indicates data which is stored in the bins,
  66  * not arbitrary malloc'd memory.
  67  *
  68  *
  69  * Subclass of vbuf_render, plugged directly into the draw module as
  70  * the rendering backend.
  71  */
  72 struct lp_setup_context
  73 {
  74    struct vbuf_render base;
  75
  76    struct pipe_context *pipe;
  77    struct vertex_info *vertex_info;
  78    uint prim;
  79    uint vertex_size;
  80    uint nr_vertices;
  81    uint sprite_coord_enable, sprite_coord_origin;
  82    uint vertex_buffer_size;
  83    void *vertex_buffer;
  84
  85    /* Final pipeline stage for draw module.  Draw module should
  86     * create/install this itself now.
  87     */
  88    struct draw_stage *vbuf;
  89    unsigned num_threads;
  90    unsigned scene_idx;
  91    struct lp_scene *scenes[MAX_SCENES];  /**< all the scenes */
  92    struct lp_scene *scene;               /**< current scene being built */
  93
  94    struct lp_fence *last_fence;
  95    struct llvmpipe_query *active_queries[LP_MAX_ACTIVE_BINNED_QUERIES];
  96    unsigned active_binned_queries;
  97
  98    boolean flatshade_first;
  99    boolean ccw_is_frontface;
 100    boolean scissor_test;
 101    boolean point_size_per_vertex;
 102    boolean rasterizer_discard;
 103    unsigned cullmode;
 104    unsigned bottom_edge_rule;
 105    float pixel_offset;
 106    float line_width;
 107    float point_size;
 108    int8_t psize_slot;
 109    int8_t viewport_index_slot;
 110    int8_t layer_slot;
 111    int8_t face_slot;
 112
 113    struct pipe_framebuffer_state fb;
 114    struct u_rect framebuffer;
 115    struct u_rect scissors[PIPE_MAX_VIEWPORTS];
 116    struct u_rect draw_regions[PIPE_MAX_VIEWPORTS];   /* intersection of fb & scissor */
 117    struct lp_jit_viewport viewports[PIPE_MAX_VIEWPORTS];
 118
 119    struct {
 120       unsigned flags;
 121       union util_color color_val[PIPE_MAX_COLOR_BUFS];
 122       uint64_t zsmask;
 123       uint64_t zsvalue;               /**< lp_rast_clear_zstencil() cmd */
 124    } clear;
 125
 126    enum setup_state {
 127       SETUP_FLUSHED,    /**< scene is null */
 128       SETUP_CLEARED,    /**< scene exists but has only clears */
 129       SETUP_ACTIVE      /**< scene exists and has at least one draw/query */
 130    } state;
 131
 132    struct {
 133       const struct lp_rast_state *stored; /**< what's in the scene */
 134       struct lp_rast_state current;  /**< currently set state */
 135       struct pipe_resource *current_tex[PIPE_MAX_SHADER_SAMPLER_VIEWS];
 136       unsigned current_tex_num;
 137    } fs;
 138
 139    /** fragment shader constants */
 140    struct {
 141       struct pipe_constant_buffer current;
 142       unsigned stored_size;
 143       const void *stored_data;
 144    } constants[LP_MAX_TGSI_CONST_BUFFERS];
 145
 146    struct {
 147       struct pipe_blend_color current;
 148       uint8_t *stored;
 149    } blend_color;
 150
 151
 152    struct {
 153       const struct lp_setup_variant *variant;
 154    } setup;
 155
 156    unsigned dirty;   /**< bitmask of LP_SETUP_NEW_x bits */
 157
 158    void (*point)( struct lp_setup_context *,
 159                   const float (*v0)[4]);
 160
 161    void (*line)( struct lp_setup_context *,
 162                  const float (*v0)[4],
 163                  const float (*v1)[4]);
 164
 165    void (*triangle)( struct lp_setup_context *,
 166                      const float (*v0)[4],
 167                      const float (*v1)[4],
 168                      const float (*v2)[4]);
 169 };
 170
 171 static inline void
 172 scissor_planes_needed(boolean scis_planes[4], const struct u_rect *bbox,
 173                       const struct u_rect *scissor)
 174 {
 175    /* left */
 176    scis_planes[0] = (bbox->x0 < scissor->x0);
 177    /* right */
 178    scis_planes[1] = (bbox->x1 > scissor->x1);
 179    /* top */
 180    scis_planes[2] = (bbox->y0 < scissor->y0);
 181    /* bottom */
 182    scis_planes[3] = (bbox->y1 > scissor->y1);
 183 }
 184
 185
 186 void lp_setup_choose_triangle( struct lp_setup_context *setup );
 187 void lp_setup_choose_line( struct lp_setup_context *setup );
 188 void lp_setup_choose_point( struct lp_setup_context *setup );
 189
 190 void lp_setup_init_vbuf(struct lp_setup_context *setup);
 191
 192 boolean lp_setup_update_state( struct lp_setup_context *setup,
 193                             boolean update_scene);
 194
 195 void lp_setup_destroy( struct lp_setup_context *setup );
 196
 197 boolean lp_setup_flush_and_restart(struct lp_setup_context *setup);
 198
 199 void
 200 lp_setup_print_triangle(struct lp_setup_context *setup,
 201                         const float (*v0)[4],
 202                         const float (*v1)[4],
 203                         const float (*v2)[4]);
 204
 205 void
 206 lp_setup_print_vertex(struct lp_setup_context *setup,
 207                       const char *name,
 208                       const float (*v)[4]);
 209
 210
 211 struct lp_rast_triangle *
 212 lp_setup_alloc_triangle(struct lp_scene *scene,
 213                         unsigned num_inputs,
 214                         unsigned nr_planes,
 215                         unsigned *tri_size);
 216
 217 boolean
 218 lp_setup_bin_triangle( struct lp_setup_context *setup,
 219                        struct lp_rast_triangle *tri,
 220                        const struct u_rect *bbox,
 221                        int nr_planes,
 222                        unsigned scissor_index );
 223
 224 #endif