2 * Mesa 3-D graphics library
4 * Copyright (C) 1999-2007 Brian Paul All Rights Reserved.
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included
14 * in all copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22 * OTHER DEALINGS IN THE SOFTWARE.
25 * Keith Whitwell <keithw@vmware.com>
31 #include "main/glheader.h"
33 struct gl_vertex_array
;
36 struct gl_buffer_object
;
37 struct gl_transform_feedback_object
;
38 struct dd_function_table
;
41 /* These are the public-access functions exported from tnl. (A few
42 * more are currently hooked into dispatch directly by the module
46 _tnl_CreateContext( struct gl_context
*ctx
);
49 _tnl_DestroyContext( struct gl_context
*ctx
);
52 _tnl_InvalidateState( struct gl_context
*ctx
, GLuint new_state
);
55 _tnl_init_driver_draw_function(struct dd_function_table
*functions
);
57 /* Functions to revive the tnl module after being unhooked from
58 * dispatch and/or driver callbacks.
62 _tnl_wakeup( struct gl_context
*ctx
);
64 /* Driver configuration options:
67 _tnl_need_projected_coords( struct gl_context
*ctx
, GLboolean flag
);
69 extern const struct gl_vertex_array
*
70 _tnl_bind_inputs( struct gl_context
*ctx
);
73 /* Control whether T&L does per-vertex fog
76 _tnl_allow_vertex_fog( struct gl_context
*ctx
, GLboolean value
);
79 _tnl_allow_pixel_fog( struct gl_context
*ctx
, GLboolean value
);
82 _tnl_program_string(struct gl_context
*ctx
, GLenum target
, struct gl_program
*program
);
85 struct _mesa_index_buffer
;
88 _tnl_draw_prims(struct gl_context
*ctx
,
89 const struct gl_vertex_array
*arrays
,
90 const struct _mesa_prim
*prim
,
92 const struct _mesa_index_buffer
*ib
,
93 GLboolean index_bounds_valid
,
96 struct gl_transform_feedback_object
*tfb_vertcount
,
98 struct gl_buffer_object
*indirect
);
101 _tnl_draw(struct gl_context
*ctx
,
102 const struct _mesa_prim
*prim
, GLuint nr_prims
,
103 const struct _mesa_index_buffer
*ib
,
104 GLboolean index_bounds_valid
, GLuint min_index
, GLuint max_index
,
105 struct gl_transform_feedback_object
*tfb_vertcount
, unsigned stream
,
106 struct gl_buffer_object
*indirect
);
109 _tnl_RasterPos(struct gl_context
*ctx
, const GLfloat vObj
[4]);
112 _tnl_validate_shine_tables( struct gl_context
*ctx
);
117 * For indirect array drawing:
123 * GLuint baseInstance; // in GL 4.2 and later, must be zero otherwise
124 * } DrawArraysIndirectCommand;
126 * For indirect indexed drawing:
133 * GLuint baseInstance; // in GL 4.2 and later, must be zero otherwise
134 * } DrawElementsIndirectCommand;
139 * Draw a number of primitives.
140 * \param prims array [nr_prims] describing what to draw (prim type,
141 * vertex count, first index, instance count, etc).
142 * \param arrays array of vertex arrays for draw
143 * \param ib index buffer for indexed drawing, NULL for array drawing
144 * \param index_bounds_valid are min_index and max_index valid?
145 * \param min_index lowest vertex index used
146 * \param max_index highest vertex index used
147 * \param tfb_vertcount if non-null, indicates which transform feedback
148 * object has the vertex count.
149 * \param tfb_stream If called via DrawTransformFeedbackStream, specifies the
150 * vertex stream buffer from which to get the vertex count.
151 * \param indirect If any prims are indirect, this specifies the buffer
152 * to find the "DrawArrays/ElementsIndirectCommand" data.
153 * This may be deprecated in the future
155 typedef void (*tnl_draw_func
)(struct gl_context
*ctx
,
156 const struct gl_vertex_array
* arrays
,
157 const struct _mesa_prim
*prims
,
159 const struct _mesa_index_buffer
*ib
,
160 GLboolean index_bounds_valid
,
163 struct gl_transform_feedback_object
*tfb_vertcount
,
165 struct gl_buffer_object
*indirect
);
168 /* Utility function to cope with various constraints on tnl modules or
169 * hardware. This can be used to split an incoming set of arrays and
170 * primitives against the following constraints:
171 * - Maximum number of indices in index buffer.
172 * - Maximum number of vertices referenced by index buffer.
173 * - Maximum hardware vertex buffer size.
179 GLuint max_vb_size
; /* bytes */
183 _tnl_split_prims(struct gl_context
*ctx
,
184 const struct gl_vertex_array
*arrays
,
185 const struct _mesa_prim
*prim
,
187 const struct _mesa_index_buffer
*ib
,
191 const struct split_limits
*limits
);