1 /**************************************************************************
3 * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
6 * Permission is hereby granted, free of charge, to any person obtaining a
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30 * Vertex buffer drawing stage.
32 * \author Keith Whitwell <keith@tungstengraphics.com>
33 * \author José Fonseca <jrfonsec@tungstengraphics.com>
40 #include "pipe/p_util.h"
48 * Interface for hardware vertex buffer rendering.
53 * Driver limits. May be tuned lower to improve cache hits on
57 unsigned max_vertex_buffer_bytes
;
60 * Get the hardware vertex format.
62 * XXX: have this in draw_context instead?
64 const struct vertex_info
*(*get_vertex_info
)( struct vbuf_render
* );
67 * Request a destination for vertices.
68 * Hardware renderers will use ttm memory, others will just malloc
71 void *(*allocate_vertices
)( struct vbuf_render
*,
76 * Notify the renderer of the current primitive when it changes.
77 * Must succeed for TRIANGLES, LINES and POINTS. Other prims at
78 * the discretion of the driver, for the benefit of the passthrough
81 boolean (*set_primitive
)( struct vbuf_render
*, unsigned prim
);
84 * DrawElements, note indices are ushort:
86 void (*draw
)( struct vbuf_render
*,
87 const ushort
*indices
,
90 /* Draw Arrays path too.
92 void (*draw_arrays
)( struct vbuf_render
*,
97 * Called when vbuf is done with this set of vertices:
99 void (*release_vertices
)( struct vbuf_render
*,
101 unsigned vertex_size
,
102 unsigned vertices_used
);
104 void (*destroy
)( struct vbuf_render
* );
110 draw_vbuf_stage( struct draw_context
*draw
,
111 struct vbuf_render
*render
);
114 #endif /*DRAW_VBUF_H_*/