src/gallium/auxiliary/draw/draw_context.h

   1
   2 /**************************************************************************
   3  *
   4  * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
   5  * All Rights Reserved.
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the
   9  * "Software"), to deal in the Software without restriction, including
  10  * without limitation the rights to use, copy, modify, merge, publish,
  11  * distribute, sub license, and/or sell copies of the Software, and to
  12  * permit persons to whom the Software is furnished to do so, subject to
  13  * the following conditions:
  14  *
  15  * The above copyright notice and this permission notice (including the
  16  * next paragraph) shall be included in all copies or substantial portions
  17  * of the Software.
  18  *
  19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  20  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  21  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  22  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  23  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  24  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  25  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  26  *
  27  **************************************************************************/
  28
  29 /**
  30  * \brief  Public interface into the drawing module.
  31  */
  32
  33 /* Authors:  Keith Whitwell <keith@tungstengraphics.com>
  34  */
  35
  36
  37 #ifndef DRAW_CONTEXT_H
  38 #define DRAW_CONTEXT_H
  39
  40
  41 #include "pipe/p_state.h"
  42 #include "tgsi/tgsi_exec.h"
  43
  44 struct pipe_context;
  45 struct draw_context;
  46 struct draw_stage;
  47 struct draw_vertex_shader;
  48 struct draw_geometry_shader;
  49 struct draw_fragment_shader;
  50 struct tgsi_sampler;
  51
  52 /*
  53  * structure to contain driver internal information
  54  * for stream out support. mapping stores the pointer
  55  * to the buffer contents, and internal offset stores
  56  * stores an internal counter to how much of the stream
  57  * out buffer is used (in bytes).
  58  */
  59 struct draw_so_target {
  60    struct pipe_stream_output_target target;
  61    void *mapping;
  62    int internal_offset;
  63    int emitted_vertices;
  64 };
  65
  66 struct draw_context *draw_create( struct pipe_context *pipe );
  67
  68 struct draw_context *draw_create_no_llvm(struct pipe_context *pipe);
  69
  70 void draw_destroy( struct draw_context *draw );
  71
  72 void draw_flush(struct draw_context *draw);
  73
  74 void draw_set_viewport_state( struct draw_context *draw,
  75                               const struct pipe_viewport_state *viewport );
  76
  77 void draw_set_clip_state( struct draw_context *pipe,
  78                           const struct pipe_clip_state *clip );
  79
  80 /**
  81  * Sets the rasterization state used by the draw module.
  82  * The rast_handle is used to pass the driver specific representation
  83  * of the rasterization state. It's going to be used when the
  84  * draw module sets the state back on the driver itself using the
  85  * pipe::bind_rasterizer_state method.
  86  *
  87  * NOTE: if you're calling this function from within the pipe's
  88  * bind_rasterizer_state you should always call it before binding
  89  * the actual state - that's because the draw module can try to
  90  * bind its own rasterizer state which would reset your newly
  91  * set state. i.e. always do
  92  * draw_set_rasterizer_state(driver->draw, state->pipe_state, state);
  93  * driver->state.raster = state;
  94  */
  95 void draw_set_rasterizer_state( struct draw_context *draw,
  96                                 const struct pipe_rasterizer_state *raster,
  97                                 void *rast_handle );
  98
  99 void draw_set_rasterize_stage( struct draw_context *draw,
 100                                struct draw_stage *stage );
 101
 102 void draw_wide_point_threshold(struct draw_context *draw, float threshold);
 103
 104 void draw_wide_point_sprites(struct draw_context *draw, boolean draw_sprite);
 105
 106 void draw_wide_line_threshold(struct draw_context *draw, float threshold);
 107
 108 void draw_enable_line_stipple(struct draw_context *draw, boolean enable);
 109
 110 void draw_enable_point_sprites(struct draw_context *draw, boolean enable);
 111
 112 void draw_set_mrd(struct draw_context *draw, double mrd);
 113
 114 boolean
 115 draw_install_aaline_stage(struct draw_context *draw, struct pipe_context *pipe);
 116
 117 boolean
 118 draw_install_aapoint_stage(struct draw_context *draw, struct pipe_context *pipe);
 119
 120 boolean
 121 draw_install_pstipple_stage(struct draw_context *draw, struct pipe_context *pipe);
 122
 123
 124 struct tgsi_shader_info *
 125 draw_get_shader_info(const struct draw_context *draw);
 126
 127 int
 128 draw_find_shader_output(const struct draw_context *draw,
 129                         uint semantic_name, uint semantic_index);
 130
 131 uint
 132 draw_num_shader_outputs(const struct draw_context *draw);
 133
 134
 135 void
 136 draw_texture_sampler(struct draw_context *draw,
 137                      uint shader_type,
 138                      struct tgsi_sampler *sampler);
 139
 140 void
 141 draw_set_sampler_views(struct draw_context *draw,
 142                        unsigned shader_stage,
 143                        struct pipe_sampler_view **views,
 144                        unsigned num);
 145 void
 146 draw_set_samplers(struct draw_context *draw,
 147                   unsigned shader_stage,
 148                   struct pipe_sampler_state **samplers,
 149                   unsigned num);
 150
 151 void
 152 draw_set_mapped_texture(struct draw_context *draw,
 153                         unsigned shader_stage,
 154                         unsigned sview_idx,
 155                         uint32_t width, uint32_t height, uint32_t depth,
 156                         uint32_t first_level, uint32_t last_level,
 157                         const void *base,
 158                         uint32_t row_stride[PIPE_MAX_TEXTURE_LEVELS],
 159                         uint32_t img_stride[PIPE_MAX_TEXTURE_LEVELS],
 160                         uint32_t mip_offsets[PIPE_MAX_TEXTURE_LEVELS]);
 161
 162
 163 /*
 164  * Vertex shader functions
 165  */
 166
 167 struct draw_vertex_shader *
 168 draw_create_vertex_shader(struct draw_context *draw,
 169                           const struct pipe_shader_state *shader);
 170 void draw_bind_vertex_shader(struct draw_context *draw,
 171                              struct draw_vertex_shader *dvs);
 172 void draw_delete_vertex_shader(struct draw_context *draw,
 173                                struct draw_vertex_shader *dvs);
 174
 175
 176 /*
 177  * Fragment shader functions
 178  */
 179 struct draw_fragment_shader *
 180 draw_create_fragment_shader(struct draw_context *draw,
 181                             const struct pipe_shader_state *shader);
 182 void draw_bind_fragment_shader(struct draw_context *draw,
 183                                struct draw_fragment_shader *dvs);
 184 void draw_delete_fragment_shader(struct draw_context *draw,
 185                                  struct draw_fragment_shader *dvs);
 186
 187 /*
 188  * Geometry shader functions
 189  */
 190 struct draw_geometry_shader *
 191 draw_create_geometry_shader(struct draw_context *draw,
 192                             const struct pipe_shader_state *shader);
 193 void draw_bind_geometry_shader(struct draw_context *draw,
 194                                struct draw_geometry_shader *dvs);
 195 void draw_delete_geometry_shader(struct draw_context *draw,
 196                                  struct draw_geometry_shader *dvs);
 197
 198
 199 /*
 200  * Vertex data functions
 201  */
 202
 203 void draw_set_vertex_buffers(struct draw_context *draw,
 204                              unsigned start_slot, unsigned count,
 205                              const struct pipe_vertex_buffer *buffers);
 206
 207 void draw_set_vertex_elements(struct draw_context *draw,
 208                               unsigned count,
 209                               const struct pipe_vertex_element *elements);
 210
 211 void draw_set_indexes(struct draw_context *draw,
 212                       const void *elements, unsigned elem_size);
 213
 214 void draw_set_mapped_vertex_buffer(struct draw_context *draw,
 215                                    unsigned attr, const void *buffer);
 216
 217 void
 218 draw_set_mapped_constant_buffer(struct draw_context *draw,
 219                                 unsigned shader_type,
 220                                 unsigned slot,
 221                                 const void *buffer,
 222                                 unsigned size);
 223
 224 void
 225 draw_set_mapped_so_targets(struct draw_context *draw,
 226                            int num_targets,
 227                            struct draw_so_target *targets[PIPE_MAX_SO_BUFFERS]);
 228
 229 void
 230 draw_set_so_state(struct draw_context *draw,
 231                   struct pipe_stream_output_info *state);
 232
 233
 234 /***********************************************************************
 235  * draw_pt.c
 236  */
 237
 238 void draw_vbo(struct draw_context *draw,
 239               const struct pipe_draw_info *info);
 240
 241 void draw_arrays(struct draw_context *draw, unsigned prim,
 242                  unsigned start, unsigned count);
 243
 244 void
 245 draw_arrays_instanced(struct draw_context *draw,
 246                       unsigned mode,
 247                       unsigned start,
 248                       unsigned count,
 249                       unsigned startInstance,
 250                       unsigned instanceCount);
 251
 252
 253 /*******************************************************************************
 254  * Driver backend interface
 255  */
 256 struct vbuf_render;
 257 void draw_set_render( struct draw_context *draw,
 258                       struct vbuf_render *render );
 259
 260 void draw_set_driver_clipping( struct draw_context *draw,
 261                                boolean bypass_clip_xy,
 262                                boolean bypass_clip_z,
 263                                boolean guard_band_xy);
 264
 265 void draw_set_force_passthrough( struct draw_context *draw,
 266                                  boolean enable );
 267
 268 /*******************************************************************************
 269  * Draw pipeline
 270  */
 271 boolean draw_need_pipeline(const struct draw_context *draw,
 272                            const struct pipe_rasterizer_state *rasterizer,
 273                            unsigned prim );
 274
 275 int
 276 draw_get_shader_param(unsigned shader, enum pipe_shader_cap param);
 277
 278 int
 279 draw_get_shader_param_no_llvm(unsigned shader, enum pipe_shader_cap param);
 280
 281 #ifdef HAVE_LLVM
 282 boolean
 283 draw_get_option_use_llvm(void);
 284 #endif
 285
 286 #endif /* DRAW_CONTEXT_H */