/************************************************************************** * * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas. * All Rights Reserved. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the * "Software"), to deal in the Software without restriction, including * without limitation the rights to use, copy, modify, merge, publish, * distribute, sub license, and/or sell copies of the Software, and to * permit persons to whom the Software is furnished to do so, subject to * the following conditions: * * The above copyright notice and this permission notice (including the * next paragraph) shall be included in all copies or substantial portions * of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. * **************************************************************************/ /* * Authors: * Keith Whitwell */ #ifndef DRAW_PIPE_H #define DRAW_PIPE_H #include "pipe/p_compiler.h" #include "draw_private.h" /* for sizeof(vertex_header) */ #include "draw_context.h" /** * Basic info for a point/line/triangle primitive. */ struct prim_header { float det; /**< front/back face determinant */ ushort flags; ushort pad; struct vertex_header *v[3]; /**< 1 to 3 vertex pointers */ }; /** * Base class for all primitive drawing stages. */ struct draw_stage { struct draw_context *draw; /**< parent context */ struct draw_stage *next; /**< next stage in pipeline */ const char *name; /**< for debugging */ struct vertex_header **tmp; /**< temp vert storage, such as for clipping */ unsigned nr_tmps; void (*point)( struct draw_stage *, struct prim_header * ); void (*line)( struct draw_stage *, struct prim_header * ); void (*tri)( struct draw_stage *, struct prim_header * ); void (*flush)( struct draw_stage *, unsigned flags ); void (*reset_stipple_counter)( struct draw_stage * ); void (*destroy)( struct draw_stage * ); }; extern struct draw_stage *draw_unfilled_stage( struct draw_context *context ); extern struct draw_stage *draw_twoside_stage( struct draw_context *context ); extern struct draw_stage *draw_offset_stage( struct draw_context *context ); extern struct draw_stage *draw_clip_stage( struct draw_context *context ); extern struct draw_stage *draw_flatshade_stage( struct draw_context *context ); extern struct draw_stage *draw_cull_stage( struct draw_context *context ); extern struct draw_stage *draw_stipple_stage( struct draw_context *context ); extern struct draw_stage *draw_wide_line_stage( struct draw_context *context ); extern struct draw_stage *draw_wide_point_stage( struct draw_context *context ); extern struct draw_stage *draw_validate_stage( struct draw_context *context ); extern void draw_free_temp_verts( struct draw_stage *stage ); extern boolean draw_alloc_temp_verts( struct draw_stage *stage, unsigned nr ); extern void draw_reset_vertex_ids( struct draw_context *draw ); void draw_pipe_passthrough_tri(struct draw_stage *stage, struct prim_header *header); void draw_pipe_passthrough_line(struct draw_stage *stage, struct prim_header *header); void draw_pipe_passthrough_point(struct draw_stage *stage, struct prim_header *header); void draw_aapoint_prepare_outputs(struct draw_context *context, struct draw_stage *stage); void draw_aaline_prepare_outputs(struct draw_context *context, struct draw_stage *stage); void draw_unfilled_prepare_outputs(struct draw_context *context, struct draw_stage *stage); /** * Get a writeable copy of a vertex. * \param stage drawing stage info * \param vert the vertex to copy (source) * \param idx index into stage's tmp[] array to put the copy (dest) * \return pointer to the copied vertex */ static INLINE struct vertex_header * dup_vert( struct draw_stage *stage, const struct vertex_header *vert, unsigned idx ) { struct vertex_header *tmp = stage->tmp[idx]; const uint vsize = sizeof(struct vertex_header) + draw_num_shader_outputs(stage->draw) * 4 * sizeof(float); memcpy(tmp, vert, vsize); tmp->vertex_id = UNDEFINED_VERTEX_ID; return tmp; } #endif