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/compiler.h"
38 #include "main/glheader.h"
39
40 struct _mesa_index_buffer;
41 struct _mesa_prim;
42 struct gl_vertex_array;
43 struct gl_context;
44 struct st_context;
45
46 void st_init_draw( struct st_context *st );
47
48 void st_destroy_draw( struct st_context *st );
49
50 struct draw_context *st_get_draw_context(struct st_context *st);
51
52 extern void
53 st_draw_vbo(struct gl_context *ctx,
54 const struct _mesa_prim *prims,
55 GLuint nr_prims,
56 const struct _mesa_index_buffer *ib,
57 GLboolean index_bounds_valid,
58 GLuint min_index,
59 GLuint max_index,
60 struct gl_transform_feedback_object *tfb_vertcount,
61 unsigned stream,
62 struct gl_buffer_object *indirect);
63
64 extern void
65 st_feedback_draw_vbo(struct gl_context *ctx,
66 const struct _mesa_prim *prims,
67 GLuint nr_prims,
68 const struct _mesa_index_buffer *ib,
69 GLboolean index_bounds_valid,
70 GLuint min_index,
71 GLuint max_index,
72 struct gl_transform_feedback_object *tfb_vertcount,
73 unsigned stream,
74 struct gl_buffer_object *indirect);
75
76 /**
77 * When drawing with VBOs, the addresses specified with
78 * glVertex/Color/TexCoordPointer() are really offsets into the VBO, not real
79 * addresses. At some point we need to convert those pointers to offsets.
80 * This function is basically a cast wrapper to avoid warnings when building
81 * in 64-bit mode.
82 */
83 static inline unsigned
pointer_to_offset(const void * ptr)84 pointer_to_offset(const void *ptr)
85 {
86 return (unsigned) (((GLsizeiptr) ptr) & 0xffffffffUL);
87 }
88
89
90 bool
91 st_draw_quad(struct st_context *st,
92 float x0, float y0, float x1, float y1, float z,
93 float s0, float t0, float s1, float t1,
94 const float *color,
95 unsigned num_instances);
96
97 #endif
98