147 lines
4.5 KiB
C
147 lines
4.5 KiB
C
/**************************************************************************
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*
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* Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
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* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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**************************************************************************/
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/**
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* \file
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* Vertex buffer drawing stage.
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*
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* \author Keith Whitwell <keith@tungstengraphics.com>
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* \author Jose Fonseca <jrfonsec@tungstengraphics.com>
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*/
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#ifndef DRAW_VBUF_H_
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#define DRAW_VBUF_H_
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#include "pipe/p_compiler.h"
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struct pipe_rasterizer_state;
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struct draw_context;
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struct vertex_info;
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struct pipe_query_data_pipeline_statistics;
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/**
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* Interface for hardware vertex buffer rendering.
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*/
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struct vbuf_render {
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/**
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* Driver limits. May be tuned lower to improve cache hits on
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* index list.
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*/
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unsigned max_indices;
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unsigned max_vertex_buffer_bytes;
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/**
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* Query if the hardware driver needs assistance for a particular
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* combination of rasterizer state and primitive.
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*
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* Currently optional.
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*/
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boolean (*need_pipeline)(const struct vbuf_render *render,
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const struct pipe_rasterizer_state *rasterizer,
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unsigned int prim );
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/**
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* Get the hardware vertex format.
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*
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* XXX: have this in draw_context instead?
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*/
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const struct vertex_info *(*get_vertex_info)( struct vbuf_render * );
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/**
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* Request a destination for vertices.
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* Hardware renderers will use ttm memory, others will just malloc
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* something.
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*/
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boolean (*allocate_vertices)( struct vbuf_render *,
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ushort vertex_size,
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ushort nr_vertices );
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void *(*map_vertices)( struct vbuf_render * );
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void (*unmap_vertices)( struct vbuf_render *,
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ushort min_index,
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ushort max_index );
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/**
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* Notify the renderer of the current primitive when it changes.
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* Must succeed for TRIANGLES, LINES and POINTS. Other prims at
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* the discretion of the driver, for the benefit of the passthrough
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* path.
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*/
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void (*set_primitive)( struct vbuf_render *, unsigned prim );
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/**
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* Draw indexed primitives. Note that indices are ushort. The driver
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* must complete this call, if necessary splitting the index list itself.
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*/
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void (*draw_elements)( struct vbuf_render *,
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const ushort *indices,
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uint nr_indices );
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/* Draw non-indexed primitives.
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*/
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void (*draw_arrays)( struct vbuf_render *,
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unsigned start,
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uint nr );
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/**
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* Called when vbuf is done with this set of vertices:
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*/
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void (*release_vertices)( struct vbuf_render * );
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void (*destroy)( struct vbuf_render * );
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/**
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* Called after writing data to the stream out buffers
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*/
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void (*set_stream_output_info)( struct vbuf_render *vbufr,
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unsigned primitive_count,
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unsigned vertices_count,
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unsigned primitive_generated );
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/**
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* Called after all relevant statistics have been accumulated.
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*/
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void (*pipeline_statistics)(
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struct vbuf_render *vbufr,
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const struct pipe_query_data_pipeline_statistics *stats );
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};
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struct draw_stage *
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draw_vbuf_stage( struct draw_context *draw,
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struct vbuf_render *render );
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#endif /*DRAW_VBUF_H_*/
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