src/gallium/drivers/llvmpipe/lp_setup_context.h

   1 /**************************************************************************
   2  *
   3  * Copyright 2007-2009 VMware, Inc.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  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 #define LP_SETUP_NEW_IMAGES      0x40
  54
  55 struct lp_setup_variant;
  56
  57
  58 /** Max number of scenes */
  59 /* XXX: make multiple scenes per context work, see lp_setup_rasterize_scene */
  60 #define MAX_SCENES 1
  61
  62
  63
  64 /**
  65  * Point/line/triangle setup context.
  66  * Note: "stored" below indicates data which is stored in the bins,
  67  * not arbitrary malloc'd memory.
  68  *
  69  *
  70  * Subclass of vbuf_render, plugged directly into the draw module as
  71  * the rendering backend.
  72  */
  73 struct lp_setup_context
  74 {
  75    struct vbuf_render base;
  76
  77    struct pipe_context *pipe;
  78    struct vertex_info *vertex_info;
  79    uint prim;
  80    uint vertex_size;
  81    uint nr_vertices;
  82    uint sprite_coord_enable, sprite_coord_origin;
  83    uint vertex_buffer_size;
  84    void *vertex_buffer;
  85
  86    /* Final pipeline stage for draw module.  Draw module should
  87     * create/install this itself now.
  88     */
  89    struct draw_stage *vbuf;
  90    unsigned num_threads;
  91    unsigned scene_idx;
  92    struct lp_scene *scenes[MAX_SCENES];  /**< all the scenes */
  93    struct lp_scene *scene;               /**< current scene being built */
  94
  95    struct lp_fence *last_fence;
  96    struct llvmpipe_query *active_queries[LP_MAX_ACTIVE_BINNED_QUERIES];
  97    unsigned active_binned_queries;
  98
  99    boolean flatshade_first;
 100    boolean ccw_is_frontface;
 101    boolean scissor_test;
 102    boolean point_size_per_vertex;
 103    boolean rasterizer_discard;
 104    boolean multisample;
 105    unsigned cullmode;
 106    unsigned bottom_edge_rule;
 107    float pixel_offset;
 108    float line_width;
 109    float point_size;
 110    int8_t psize_slot;
 111    int8_t viewport_index_slot;
 112    int8_t layer_slot;
 113    int8_t face_slot;
 114
 115    struct pipe_framebuffer_state fb;
 116    struct u_rect framebuffer;
 117    struct u_rect scissors[PIPE_MAX_VIEWPORTS];
 118    struct u_rect draw_regions[PIPE_MAX_VIEWPORTS];   /* intersection of fb & scissor */
 119    struct lp_jit_viewport viewports[PIPE_MAX_VIEWPORTS];
 120
 121    struct {
 122       unsigned flags;
 123       union util_color color_val[PIPE_MAX_COLOR_BUFS];
 124       uint64_t zsmask;
 125       uint64_t zsvalue;               /**< lp_rast_clear_zstencil() cmd */
 126    } clear;
 127
 128    enum setup_state {
 129       SETUP_FLUSHED,    /**< scene is null */
 130       SETUP_CLEARED,    /**< scene exists but has only clears */
 131       SETUP_ACTIVE      /**< scene exists and has at least one draw/query */
 132    } state;
 133
 134    struct {
 135       const struct lp_rast_state *stored; /**< what's in the scene */
 136       struct lp_rast_state current;  /**< currently set state */
 137       struct pipe_resource *current_tex[PIPE_MAX_SHADER_SAMPLER_VIEWS];
 138       unsigned current_tex_num;
 139    } fs;
 140
 141    /** fragment shader constants */
 142    struct {
 143       struct pipe_constant_buffer current;
 144       unsigned stored_size;
 145       const void *stored_data;
 146    } constants[LP_MAX_TGSI_CONST_BUFFERS];
 147
 148    /** fragment shader buffers */
 149    struct {
 150       struct pipe_shader_buffer current;
 151    } ssbos[LP_MAX_TGSI_SHADER_BUFFERS];
 152
 153    struct {
 154       struct pipe_image_view current;
 155    } images[LP_MAX_TGSI_SHADER_IMAGES];
 156
 157    struct {
 158       struct pipe_blend_color current;
 159       uint8_t *stored;
 160    } blend_color;
 161
 162
 163    struct {
 164       const struct lp_setup_variant *variant;
 165    } setup;
 166
 167    unsigned dirty;   /**< bitmask of LP_SETUP_NEW_x bits */
 168
 169    void (*point)( struct lp_setup_context *,
 170                   const float (*v0)[4]);
 171
 172    void (*line)( struct lp_setup_context *,
 173                  const float (*v0)[4],
 174                  const float (*v1)[4]);
 175
 176    void (*triangle)( struct lp_setup_context *,
 177                      const float (*v0)[4],
 178                      const float (*v1)[4],
 179                      const float (*v2)[4]);
 180 };
 181
 182 static inline void
 183 scissor_planes_needed(boolean scis_planes[4], const struct u_rect *bbox,
 184                       const struct u_rect *scissor)
 185 {
 186    /* left */
 187    scis_planes[0] = (bbox->x0 < scissor->x0);
 188    /* right */
 189    scis_planes[1] = (bbox->x1 > scissor->x1);
 190    /* top */
 191    scis_planes[2] = (bbox->y0 < scissor->y0);
 192    /* bottom */
 193    scis_planes[3] = (bbox->y1 > scissor->y1);
 194 }
 195
 196
 197 void lp_setup_choose_triangle( struct lp_setup_context *setup );
 198 void lp_setup_choose_line( struct lp_setup_context *setup );
 199 void lp_setup_choose_point( struct lp_setup_context *setup );
 200
 201 void lp_setup_init_vbuf(struct lp_setup_context *setup);
 202
 203 boolean lp_setup_update_state( struct lp_setup_context *setup,
 204                             boolean update_scene);
 205
 206 void lp_setup_destroy( struct lp_setup_context *setup );
 207
 208 boolean lp_setup_flush_and_restart(struct lp_setup_context *setup);
 209
 210 void
 211 lp_setup_print_triangle(struct lp_setup_context *setup,
 212                         const float (*v0)[4],
 213                         const float (*v1)[4],
 214                         const float (*v2)[4]);
 215
 216 void
 217 lp_setup_print_vertex(struct lp_setup_context *setup,
 218                       const char *name,
 219                       const float (*v)[4]);
 220
 221
 222 struct lp_rast_triangle *
 223 lp_setup_alloc_triangle(struct lp_scene *scene,
 224                         unsigned num_inputs,
 225                         unsigned nr_planes,
 226                         unsigned *tri_size);
 227
 228 boolean
 229 lp_setup_bin_triangle(struct lp_setup_context *setup,
 230                       struct lp_rast_triangle *tri,
 231                       const struct u_rect *bboxorig,
 232                       const struct u_rect *bbox,
 233                       int nr_planes,
 234                       unsigned scissor_index);
 235
 236 #endif