/**************************************************************************
*
- * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * Copyright 2007 VMware, Inc.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* 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
+ * IN NO EVENT SHALL VMWARE 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 <keith@tungstengraphics.com>
+ * Keith Whitwell <keithw@vmware.com>
*/
#ifndef DRAW_PT_H
#include "pipe/p_compiler.h"
-typedef unsigned (*pt_elt_func)( const void *elts, unsigned idx );
-
struct draw_pt_middle_end;
struct draw_context;
+struct draw_prim_info;
+struct draw_vertex_info;
#define PT_SHADE 0x1
/* The "front end" - prepare sets of fetch, draw elements for the
* middle end.
*
- * Currenly one version of this:
- * - vcache - catchall implementation, decomposes to TRI/LINE/POINT prims
- * Later:
- * - varray, varray_split
- * - velement, velement_split
+ * The fetch elements are indices to the vertices. The draw elements are
+ * indices to the fetched vertices. When both arrays of elements are both
+ * linear, middle->run_linear is called; When only the fetch elements are
+ * linear, middle->run_linear_elts is called; Otherwise, middle->run is
+ * called.
+ *
+ * When the number of the draw elements exceeds max_vertex of the middle end,
+ * the draw elements (as well as the fetch elements) are splitted and the
+ * middle end is called multiple times.
*
- * Currenly only using the vcache version.
+ * Currenly there is:
+ * - vsplit - catchall implementation, splits big prims
*/
struct draw_pt_front_end {
void (*prepare)( struct draw_pt_front_end *,
unsigned opt );
void (*run)( struct draw_pt_front_end *,
- pt_elt_func elt_func,
- const void *elt_ptr,
- int elt_bias,
+ unsigned start,
unsigned count );
- void (*finish)( struct draw_pt_front_end * );
+ void (*flush)( struct draw_pt_front_end *, unsigned flags );
void (*destroy)( struct draw_pt_front_end * );
};
/* The "middle end" - prepares actual hardware vertices for the
* hardware backend.
*
+ * prim_flags is as defined by pipe_draw_info::flags.
+ *
* Currently two versions of this:
* - fetch, vertex shade, cliptest, prim-pipeline
* - fetch, emit (ie passthrough)
unsigned opt,
unsigned *max_vertices );
+ /**
+ * Bind/update parameter state such as constants, viewport dims
+ * and clip planes. Basically, stuff which isn't "baked" into the
+ * shader or pipeline state.
+ */
+ void (*bind_parameters)(struct draw_pt_middle_end *);
+
void (*run)( struct draw_pt_middle_end *,
const unsigned *fetch_elts,
unsigned fetch_count,
const ushort *draw_elts,
- unsigned draw_count );
+ unsigned draw_count,
+ unsigned prim_flags );
void (*run_linear)(struct draw_pt_middle_end *,
unsigned start,
- unsigned count);
+ unsigned count,
+ unsigned prim_flags );
/* Transform all vertices in a linear range and then draw them with
* the supplied element list. May fail and return FALSE.
unsigned fetch_start,
unsigned fetch_count,
const ushort *draw_elts,
- unsigned draw_count );
+ unsigned draw_count,
+ unsigned prim_flags );
int (*get_max_vertex_count)( struct draw_pt_middle_end * );
struct vertex_header;
-/* Helper functions.
- */
-pt_elt_func draw_pt_elt_func( struct draw_context *draw );
-const void *draw_pt_elt_ptr( struct draw_context *draw,
- unsigned start );
-
/* Frontends:
*
- * Currently only the general-purpose vcache implementation, could add
- * a special case for tiny vertex buffers.
+ * Currently only the general-purpose vsplit implementation.
*/
-struct draw_pt_front_end *draw_pt_vcache( struct draw_context *draw );
-struct draw_pt_front_end *draw_pt_varray(struct draw_context *draw);
+struct draw_pt_front_end *draw_pt_vsplit(struct draw_context *draw);
/* Middle-ends:
unsigned *max_vertices );
void draw_pt_emit( struct pt_emit *emit,
- const float (*vertex_data)[4],
- unsigned vertex_count,
- unsigned stride,
- const ushort *elts,
- unsigned count );
+ const struct draw_vertex_info *vert_info,
+ const struct draw_prim_info *prim_info);
void draw_pt_emit_linear( struct pt_emit *emit,
- const float (*vertex_data)[4],
- unsigned stride,
- unsigned count );
+ const struct draw_vertex_info *vert_info,
+ const struct draw_prim_info *prim_info);
void draw_pt_emit_destroy( struct pt_emit *emit );
struct pt_emit *draw_pt_emit_create( struct draw_context *draw );
+/*******************************************************************************
+ * HW stream output emit:
+ */
+struct pt_so_emit;
+
+void draw_pt_so_emit_prepare(struct pt_so_emit *emit, boolean use_pre_clip_pos);
+
+void draw_pt_so_emit( struct pt_so_emit *emit,
+ const struct draw_vertex_info *vert_info,
+ const struct draw_prim_info *prim_info );
+
+void draw_pt_so_emit_destroy( struct pt_so_emit *emit );
+
+struct pt_so_emit *draw_pt_so_emit_create( struct draw_context *draw );
/*******************************************************************************
* API vertex fetch:
struct pt_post_vs;
boolean draw_pt_post_vs_run( struct pt_post_vs *pvs,
- struct vertex_header *pipeline_verts,
- unsigned stride,
- unsigned count );
+ struct draw_vertex_info *info,
+ const struct draw_prim_info *prim_info );
void draw_pt_post_vs_prepare( struct pt_post_vs *pvs,
- boolean bypass_clipping,
+ boolean clip_xy,
+ boolean clip_z,
+ boolean clip_user,
+ boolean guard_band,
boolean bypass_viewport,
- boolean opengl,
+ boolean clip_halfz,
boolean need_edgeflags );
struct pt_post_vs *draw_pt_post_vs_create( struct draw_context *draw );
* Utils:
*/
void draw_pt_split_prim(unsigned prim, unsigned *first, unsigned *incr);
+unsigned draw_pt_trim_count(unsigned count, unsigned first, unsigned incr);
#endif
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