/************************************************************************** * * 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. * **************************************************************************/ /** * Private data structures, etc for the draw module. */ /** * Authors: * Keith Whitwell * Brian Paul */ #ifndef DRAW_PRIVATE_H #define DRAW_PRIVATE_H #include "pipe/p_state.h" #include "pipe/p_defines.h" #include "rtasm/rtasm_x86sse.h" #include "tgsi/exec/tgsi_exec.h" #include "tgsi/util/tgsi_scan.h" struct pipe_context; struct gallivm_prog; struct gallivm_cpu_engine; struct draw_pt_middle_end; struct draw_pt_front_end; #define MAX_SHADER_VERTICES 128 /** * Basic vertex info. * Carry some useful information around with the vertices in the prim pipe. */ struct vertex_header { unsigned clipmask:12; unsigned edgeflag:1; unsigned pad:3; unsigned vertex_id:16; float clip[4]; float data[][4]; /* Note variable size */ }; /* NOTE: It should match vertex_id size above */ #define UNDEFINED_VERTEX_ID 0xffff /* XXX This is too large */ #define MAX_VERTEX_SIZE ((2 + PIPE_MAX_SHADER_OUTPUTS) * 4 * sizeof(float)) /** * Basic info for a point/line/triangle primitive. */ struct prim_header { float det; /**< front/back face determinant */ unsigned reset_line_stipple:1; unsigned edgeflags:3; unsigned pad:28; struct vertex_header *v[3]; /**< 1 to 3 vertex pointers */ }; struct draw_context; /** * Base class for all primitive drawing stages. */ struct draw_stage { struct draw_context *draw; /**< parent context */ struct draw_stage *next; /**< next stage in pipeline */ 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 * ); }; #define PRIM_QUEUE_LENGTH 32 #define VCACHE_SIZE 32 #define VCACHE_OVERFLOW 4 #define VS_QUEUE_LENGTH (VCACHE_SIZE + VCACHE_OVERFLOW + 1) /* can never fill up */ /** * Private version of the compiled vertex_shader */ struct draw_vertex_shader { /* This member will disappear shortly: */ struct pipe_shader_state state; struct tgsi_shader_info info; void (*prepare)( struct draw_vertex_shader *shader, struct draw_context *draw ); /* Run the shader - this interface will get cleaned up in the * future: */ boolean (*run)( struct draw_vertex_shader *shader, struct draw_context *draw, const unsigned *elts, unsigned count, void *out ); void (*delete)( struct draw_vertex_shader * ); }; /* Internal function for vertex fetch. */ typedef void (*fetch_func)(const void *ptr, float *attrib); fetch_func draw_get_fetch_func( enum pipe_format format ); typedef void (*full_fetch_func)( struct draw_context *draw, struct tgsi_exec_machine *machine, const unsigned *elts, unsigned count ); typedef void (*pt_fetch_func)( struct draw_context *draw, float *out, unsigned start, unsigned count ); struct vbuf_render; /** * Private context for the drawing module. */ struct draw_context { /** Drawing/primitive pipeline stages */ struct { struct draw_stage *first; /**< one of the following */ struct draw_stage *validate; /* stages (in logical order) */ struct draw_stage *flatshade; struct draw_stage *clip; struct draw_stage *cull; struct draw_stage *twoside; struct draw_stage *offset; struct draw_stage *unfilled; struct draw_stage *stipple; struct draw_stage *aapoint; struct draw_stage *aaline; struct draw_stage *pstipple; struct draw_stage *wide_line; struct draw_stage *wide_point; struct draw_stage *rasterize; } pipeline; struct vbuf_render *render; /* Support prototype passthrough path: */ struct { unsigned prim; /* XXX: to be removed */ unsigned hw_vertex_size; /* XXX: to be removed */ struct { struct draw_pt_middle_end *fetch_emit; struct draw_pt_middle_end *fetch_pipeline; struct draw_pt_middle_end *fetch_shade_emit; struct draw_pt_middle_end *fetch_shade_cliptest_pipeline_or_emit; } middle; struct { struct draw_pt_front_end *noop; struct draw_pt_front_end *split_arrays; struct draw_pt_front_end *vcache; } front; struct { char *verts; unsigned vertex_stride; unsigned vertex_count; } pipeline; } pt; boolean flushing; /* pipe state that we need: */ const struct pipe_rasterizer_state *rasterizer; struct pipe_viewport_state viewport; struct pipe_vertex_buffer vertex_buffer[PIPE_MAX_ATTRIBS]; struct pipe_vertex_element vertex_element[PIPE_MAX_ATTRIBS]; struct draw_vertex_shader *vertex_shader; boolean identity_viewport; uint num_vs_outputs; /**< convenience, from vertex_shader */ /* user-space vertex data, buffers */ struct { const unsigned *edgeflag; /** vertex element/index buffer (ex: glDrawElements) */ const void *elts; /** bytes per index (0, 1, 2 or 4) */ unsigned eltSize; /** vertex arrays */ const void *vbuffer[PIPE_MAX_ATTRIBS]; /** constant buffer (for vertex shader) */ const void *constants; } user; /* Clip derived state: */ float plane[12][4]; unsigned nr_planes; float wide_point_threshold; /**< convert pnts to tris if larger than this */ float wide_line_threshold; /**< convert lines to tris if wider than this */ boolean line_stipple; /**< do line stipple? */ boolean point_sprite; /**< convert points to quads for sprites? */ boolean use_sse; /* If a prim stage introduces new vertex attributes, they'll be stored here */ struct { uint semantic_name; uint semantic_index; int slot; } extra_vp_outputs; unsigned reduced_prim; /** TGSI program interpreter runtime state */ struct tgsi_exec_machine machine; /* Vertex fetch internal state */ struct { const ubyte *src_ptr[PIPE_MAX_ATTRIBS]; unsigned pitch[PIPE_MAX_ATTRIBS]; fetch_func fetch[PIPE_MAX_ATTRIBS]; unsigned nr_attrs; full_fetch_func fetch_func; pt_fetch_func pt_fetch; } vertex_fetch; /* Post-tnl vertex cache: */ struct { unsigned referenced; /**< bitfield */ struct { unsigned in; /* client array element */ unsigned out; /* index in vs queue/array */ } idx[VCACHE_SIZE + VCACHE_OVERFLOW]; unsigned overflow; /** To find space in the vertex cache: */ struct vertex_header *(*get_vertex)( struct draw_context *draw, unsigned i ); } vcache; /* Vertex shader queue: */ struct { unsigned elts[VS_QUEUE_LENGTH]; /**< index into the user's vertex arrays */ char *vertex_cache; unsigned queue_nr; unsigned post_nr; } vs; /** * Run the vertex shader on all vertices in the vertex queue. */ void (*shader_queue_flush)(struct draw_context *draw); /* Prim pipeline queue: */ struct { /* Need to queue up primitives until their vertices have been * transformed by a vs queue flush. */ struct prim_header queue[PRIM_QUEUE_LENGTH]; unsigned queue_nr; } pq; /* This (and the tgsi_exec_machine struct) probably need to be moved somewhere private. */ struct gallivm_cpu_engine *engine; void *driver_private; }; 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 void draw_alloc_temp_verts( struct draw_stage *stage, unsigned nr ); extern void draw_reset_vertex_ids( struct draw_context *draw ); extern int draw_vertex_cache_check_space( struct draw_context *draw, unsigned nr_verts ); extern void draw_vertex_cache_invalidate( struct draw_context *draw ); extern void draw_vertex_cache_unreference( struct draw_context *draw ); extern void draw_vertex_cache_reset_vertex_ids( struct draw_context *draw ); extern void draw_vertex_shader_queue_flush( struct draw_context *draw ); extern void draw_update_vertex_fetch( struct draw_context *draw ); extern boolean draw_need_pipeline(const struct draw_context *draw, unsigned prim ); /* Passthrough mode (second attempt): */ boolean draw_pt_init( struct draw_context *draw ); void draw_pt_destroy( struct draw_context *draw ); boolean draw_pt_arrays( struct draw_context *draw, unsigned prim, unsigned start, unsigned count ); void draw_pt_reset_vertex_ids( struct draw_context *draw ); void draw_pt_run_pipeline( struct draw_context *draw, unsigned prim, char *verts, unsigned vertex_stride, unsigned vertex_count, const ushort *elts, unsigned count ); #define DRAW_FLUSH_SHADER_QUEUE 0x1 /* sized not to overflow, never raised */ #define DRAW_FLUSH_PRIM_QUEUE 0x2 #define DRAW_FLUSH_VERTEX_CACHE 0x4 #define DRAW_FLUSH_STATE_CHANGE 0x8 #define DRAW_FLUSH_BACKEND 0x10 void draw_do_flush( struct draw_context *draw, unsigned flags ); boolean draw_get_edgeflag( struct draw_context *draw, unsigned idx ); /** * 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) + stage->draw->num_vs_outputs * 4 * sizeof(float); memcpy(tmp, vert, vsize); tmp->vertex_id = UNDEFINED_VERTEX_ID; return tmp; } static INLINE float dot4(const float *a, const float *b) { float result = (a[0]*b[0] + a[1]*b[1] + a[2]*b[2] + a[3]*b[3]); return result; } static INLINE struct vertex_header * draw_header_from_block(char *block, int num) { static const unsigned size = (MAX_VERTEX_SIZE + 0x0f) & ~0x0f; return (struct vertex_header*)(block + num * size); } #endif /* DRAW_PRIVATE_H */