1/*
2 * mesa 3-D graphics library
3 * Version:  6.5
4 *
5 * Copyright (C) 1999-2006  Brian Paul   All Rights Reserved.
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
13 *
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
20 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
21 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
22 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
23 */
24
25/**
26 * \file vbo_context.h
27 * \brief VBO builder module datatypes and definitions.
28 * \author Keith Whitwell
29 */
30
31
32#ifndef _VBO_H
33#define _VBO_H
34
35#include "main/glheader.h"
36
37struct gl_client_array;
38struct gl_context;
39struct gl_transform_feedback_object;
40
41struct _mesa_prim {
42   GLuint mode:8;    /**< GL_POINTS, GL_LINES, GL_QUAD_STRIP, etc */
43   GLuint indexed:1;
44   GLuint begin:1;
45   GLuint end:1;
46   GLuint weak:1;
47   GLuint no_current_update:1;
48   GLuint pad:19;
49
50   GLuint start;
51   GLuint count;
52   GLint basevertex;
53   GLsizei num_instances;
54   GLuint base_instance;
55};
56
57/* Would like to call this a "vbo_index_buffer", but this would be
58 * confusing as the indices are not neccessarily yet in a non-null
59 * buffer object.
60 */
61struct _mesa_index_buffer {
62   GLuint count;
63   GLenum type;
64   struct gl_buffer_object *obj;
65   const void *ptr;
66};
67
68
69
70GLboolean _vbo_CreateContext( struct gl_context *ctx );
71void _vbo_DestroyContext( struct gl_context *ctx );
72void _vbo_InvalidateState( struct gl_context *ctx, GLuint new_state );
73
74
75typedef void (*vbo_draw_func)( struct gl_context *ctx,
76			       const struct _mesa_prim *prims,
77			       GLuint nr_prims,
78			       const struct _mesa_index_buffer *ib,
79			       GLboolean index_bounds_valid,
80			       GLuint min_index,
81			       GLuint max_index,
82			       struct gl_transform_feedback_object *tfb_vertcount );
83
84
85
86
87/* Utility function to cope with various constraints on tnl modules or
88 * hardware.  This can be used to split an incoming set of arrays and
89 * primitives against the following constraints:
90 *    - Maximum number of indices in index buffer.
91 *    - Maximum number of vertices referenced by index buffer.
92 *    - Maximum hardware vertex buffer size.
93 */
94struct split_limits {
95   GLuint max_verts;
96   GLuint max_indices;
97   GLuint max_vb_size;		/* bytes */
98};
99
100
101void vbo_split_prims( struct gl_context *ctx,
102		      const struct gl_client_array *arrays[],
103		      const struct _mesa_prim *prim,
104		      GLuint nr_prims,
105		      const struct _mesa_index_buffer *ib,
106		      GLuint min_index,
107		      GLuint max_index,
108		      vbo_draw_func draw,
109		      const struct split_limits *limits );
110
111
112/* Helpers for dealing translating away non-zero min_index.
113 */
114GLboolean vbo_all_varyings_in_vbos( const struct gl_client_array *arrays[] );
115GLboolean vbo_any_varyings_in_vbos( const struct gl_client_array *arrays[] );
116
117void vbo_rebase_prims( struct gl_context *ctx,
118		       const struct gl_client_array *arrays[],
119		       const struct _mesa_prim *prim,
120		       GLuint nr_prims,
121		       const struct _mesa_index_buffer *ib,
122		       GLuint min_index,
123		       GLuint max_index,
124		       vbo_draw_func draw );
125
126static inline int
127vbo_sizeof_ib_type(GLenum type)
128{
129   switch (type) {
130   case GL_UNSIGNED_INT:
131      return sizeof(GLuint);
132   case GL_UNSIGNED_SHORT:
133      return sizeof(GLushort);
134   case GL_UNSIGNED_BYTE:
135      return sizeof(GLubyte);
136   default:
137      assert(!"unsupported index data type");
138      /* In case assert is turned off */
139      return 0;
140   }
141}
142
143void
144vbo_get_minmax_indices(struct gl_context *ctx, const struct _mesa_prim *prim,
145                       const struct _mesa_index_buffer *ib,
146                       GLuint *min_index, GLuint *max_index, GLuint nr_prims);
147
148void vbo_use_buffer_objects(struct gl_context *ctx);
149
150void vbo_always_unmap_buffers(struct gl_context *ctx);
151
152void vbo_set_draw_func(struct gl_context *ctx, vbo_draw_func func);
153
154void vbo_check_buffers_are_unmapped(struct gl_context *ctx);
155
156void vbo_bind_arrays(struct gl_context *ctx);
157
158size_t
159count_tessellated_primitives(const struct _mesa_prim *prim);
160
161void
162vbo_sw_primitive_restart(struct gl_context *ctx,
163                         const struct _mesa_prim *prim,
164                         GLuint nr_prims,
165                         const struct _mesa_index_buffer *ib);
166
167void GLAPIENTRY
168_es_Color4f(GLfloat r, GLfloat g, GLfloat b, GLfloat a);
169
170void GLAPIENTRY
171_es_Normal3f(GLfloat x, GLfloat y, GLfloat z);
172
173void GLAPIENTRY
174_es_MultiTexCoord4f(GLenum target, GLfloat s, GLfloat t, GLfloat r, GLfloat q);
175
176void GLAPIENTRY
177_es_Materialfv(GLenum face, GLenum pname, const GLfloat *params);
178
179void GLAPIENTRY
180_es_Materialf(GLenum face, GLenum pname, GLfloat param);
181
182void GLAPIENTRY
183_es_VertexAttrib4f(GLuint index, GLfloat x, GLfloat y, GLfloat z, GLfloat w);
184
185void GLAPIENTRY
186_es_VertexAttrib1f(GLuint indx, GLfloat x);
187
188void GLAPIENTRY
189_es_VertexAttrib1fv(GLuint indx, const GLfloat* values);
190
191void GLAPIENTRY
192_es_VertexAttrib2f(GLuint indx, GLfloat x, GLfloat y);
193
194void GLAPIENTRY
195_es_VertexAttrib2fv(GLuint indx, const GLfloat* values);
196
197void GLAPIENTRY
198_es_VertexAttrib3f(GLuint indx, GLfloat x, GLfloat y, GLfloat z);
199
200void GLAPIENTRY
201_es_VertexAttrib3fv(GLuint indx, const GLfloat* values);
202
203void GLAPIENTRY
204_es_VertexAttrib4fv(GLuint indx, const GLfloat* values);
205
206#endif
207