1 /**************************************************************************
2 *
3 * Copyright 2004 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 * Authors:
30 * Keith Whitwell <keithw@vmware.com>
31 */
32
33
34 #ifndef ST_DRAW_H
35 #define ST_DRAW_H
36
37 #include "main/glheader.h"
38
39 struct _mesa_index_buffer;
40 struct _mesa_prim;
41 struct gl_vertex_array;
42 struct gl_context;
43 struct st_context;
44
45 void st_init_draw( struct st_context *st );
46
47 void st_destroy_draw( struct st_context *st );
48
49 struct draw_context *st_get_draw_context(struct st_context *st);
50
51 extern void
52 st_feedback_draw_vbo(struct gl_context *ctx,
53 const struct _mesa_prim *prims,
54 GLuint nr_prims,
55 const struct _mesa_index_buffer *ib,
56 GLboolean index_bounds_valid,
57 GLuint min_index,
58 GLuint max_index,
59 struct gl_transform_feedback_object *tfb_vertcount,
60 unsigned stream,
61 struct gl_buffer_object *indirect);
62
63 /**
64 * When drawing with VBOs, the addresses specified with
65 * glVertex/Color/TexCoordPointer() are really offsets into the VBO, not real
66 * addresses. At some point we need to convert those pointers to offsets.
67 * This function is basically a cast wrapper to avoid warnings when building
68 * in 64-bit mode.
69 */
70 static inline unsigned
pointer_to_offset(const void * ptr)71 pointer_to_offset(const void *ptr)
72 {
73 return (unsigned) (((GLsizeiptr) ptr) & 0xffffffffUL);
74 }
75
76
77 bool
78 st_draw_quad(struct st_context *st,
79 float x0, float y0, float x1, float y1, float z,
80 float s0, float t0, float s1, float t1,
81 const float *color,
82 unsigned num_instances);
83
84 #endif
85