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 #define LP_SETUP_NEW_SSBOS       0x20
  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    boolean multisample;
 104    unsigned cullmode;
 105    unsigned bottom_edge_rule;
 106    float pixel_offset;
 107    float line_width;
 108    float point_size;
 109    int8_t psize_slot;
 110    int8_t viewport_index_slot;
 111    int8_t layer_slot;
 112    int8_t face_slot;
 113
 114    struct pipe_framebuffer_state fb;
 115    struct u_rect framebuffer;
 116    struct u_rect scissors[PIPE_MAX_VIEWPORTS];
 117    struct u_rect draw_regions[PIPE_MAX_VIEWPORTS];   /* intersection of fb & scissor */
 118    struct lp_jit_viewport viewports[PIPE_MAX_VIEWPORTS];
 119
 120    struct {
 121       unsigned flags;
 122       union util_color color_val[PIPE_MAX_COLOR_BUFS];
 123       uint64_t zsmask;
 124       uint64_t zsvalue;               /**< lp_rast_clear_zstencil() cmd */
 125    } clear;
 126
 127    enum setup_state {
 128       SETUP_FLUSHED,    /**< scene is null */
 129       SETUP_CLEARED,    /**< scene exists but has only clears */
 130       SETUP_ACTIVE      /**< scene exists and has at least one draw/query */
 131    } state;
 132
 133    struct {
 134       const struct lp_rast_state *stored; /**< what's in the scene */
 135       struct lp_rast_state current;  /**< currently set state */
 136       struct pipe_resource *current_tex[PIPE_MAX_SHADER_SAMPLER_VIEWS];
 137       unsigned current_tex_num;
 138    } fs;
 139
 140    /** fragment shader constants */
 141    struct {
 142       struct pipe_constant_buffer current;
 143       unsigned stored_size;
 144       const void *stored_data;
 145    } constants[LP_MAX_TGSI_CONST_BUFFERS];
 146
 147    /** fragment shader buffers */
 148    struct {
 149       struct pipe_shader_buffer current;
 150    } ssbos[LP_MAX_TGSI_SHADER_BUFFERS];
 151
 152    struct {
 153       struct pipe_image_view current;
 154    } images[LP_MAX_TGSI_SHADER_IMAGES];
 155
 156    struct {
 157       struct pipe_blend_color current;
 158       uint8_t *stored;
 159    } blend_color;
 160
 161
 162    struct {
 163       const struct lp_setup_variant *variant;
 164    } setup;
 165
 166    unsigned dirty;   /**< bitmask of LP_SETUP_NEW_x bits */
 167
 168    void (*point)( struct lp_setup_context *,
 169                   const float (*v0)[4]);
 170
 171    void (*line)( struct lp_setup_context *,
 172                  const float (*v0)[4],
 173                  const float (*v1)[4]);
 174
 175    void (*triangle)( struct lp_setup_context *,
 176                      const float (*v0)[4],
 177                      const float (*v1)[4],
 178                      const float (*v2)[4]);
 179 };
 180
 181 static inline void
 182 scissor_planes_needed(boolean scis_planes[4], const struct u_rect *bbox,
 183                       const struct u_rect *scissor)
 184 {
 185    /* left */
 186    scis_planes[0] = (bbox->x0 < scissor->x0);
 187    /* right */
 188    scis_planes[1] = (bbox->x1 > scissor->x1);
 189    /* top */
 190    scis_planes[2] = (bbox->y0 < scissor->y0);
 191    /* bottom */
 192    scis_planes[3] = (bbox->y1 > scissor->y1);
 193 }
 194
 195
 196 void lp_setup_choose_triangle( struct lp_setup_context *setup );
 197 void lp_setup_choose_line( struct lp_setup_context *setup );
 198 void lp_setup_choose_point( struct lp_setup_context *setup );
 199
 200 void lp_setup_init_vbuf(struct lp_setup_context *setup);
 201
 202 boolean lp_setup_update_state( struct lp_setup_context *setup,
 203                             boolean update_scene);
 204
 205 void lp_setup_destroy( struct lp_setup_context *setup );
 206
 207 boolean lp_setup_flush_and_restart(struct lp_setup_context *setup);
 208
 209 void
 210 lp_setup_print_triangle(struct lp_setup_context *setup,
 211                         const float (*v0)[4],
 212                         const float (*v1)[4],
 213                         const float (*v2)[4]);
 214
 215 void
 216 lp_setup_print_vertex(struct lp_setup_context *setup,
 217                       const char *name,
 218                       const float (*v)[4]);
 219
 220
 221 struct lp_rast_triangle *
 222 lp_setup_alloc_triangle(struct lp_scene *scene,
 223                         unsigned num_inputs,
 224                         unsigned nr_planes,
 225                         unsigned *tri_size);
 226
 227 boolean
 228 lp_setup_bin_triangle(struct lp_setup_context *setup,
 229                       struct lp_rast_triangle *tri,
 230                       const struct u_rect *bboxorig,
 231                       const struct u_rect *bbox,
 232                       int nr_planes,
 233                       unsigned scissor_index);
 234
 235 #endif