1/**************************************************************************
2 *
3 * Copyright 2008 VMware, Inc.
4 * All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
16 * of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 *
26 **************************************************************************/
27
28
29#include "pipe/p_context.h"
30#include "pipe/p_defines.h"
31#include "util/u_inlines.h"
32#include "util/u_draw_quad.h"
33#include "util/u_memory.h"
34#include "cso_cache/cso_context.h"
35
36
37/**
38 * Draw a simple vertex buffer / primitive.
39 * Limited to float[4] vertex attribs, tightly packed.
40 */
41void
42util_draw_vertex_buffer(struct pipe_context *pipe,
43                        struct cso_context *cso,
44                        struct pipe_resource *vbuf,
45                        uint vbuf_slot,
46                        uint offset,
47                        uint prim_type,
48                        uint num_verts,
49                        uint num_attribs)
50{
51   struct pipe_vertex_buffer vbuffer;
52
53   assert(num_attribs <= PIPE_MAX_ATTRIBS);
54
55   /* tell pipe about the vertex buffer */
56   memset(&vbuffer, 0, sizeof(vbuffer));
57   vbuffer.buffer.resource = vbuf;
58   vbuffer.stride = num_attribs * 4 * sizeof(float);  /* vertex size */
59   vbuffer.buffer_offset = offset;
60
61   /* note: vertex elements already set by caller */
62
63   if (cso) {
64      cso_set_vertex_buffers(cso, vbuf_slot, 1, 0, false, &vbuffer);
65      cso_draw_arrays(cso, prim_type, 0, num_verts);
66   } else {
67      pipe->set_vertex_buffers(pipe, vbuf_slot, 1, 0, false, &vbuffer);
68      util_draw_arrays(pipe, prim_type, 0, num_verts);
69   }
70}
71
72
73/**
74 * Draw a simple vertex buffer / primitive.
75 * Limited to float[4] vertex attribs, tightly packed.
76 */
77void
78util_draw_user_vertex_buffer(struct cso_context *cso, void *buffer,
79                             uint prim_type, uint num_verts, uint num_attribs)
80{
81   struct pipe_vertex_buffer vbuffer = {0};
82
83   assert(num_attribs <= PIPE_MAX_ATTRIBS);
84
85   vbuffer.is_user_buffer = true;
86   vbuffer.buffer.user = buffer;
87   vbuffer.stride = num_attribs * 4 * sizeof(float);  /* vertex size */
88
89   /* note: vertex elements already set by caller */
90
91   cso_set_vertex_buffers(cso, 0, 1, 0, false, &vbuffer);
92   cso_draw_arrays(cso, prim_type, 0, num_verts);
93}
94