1 /**************************************************************************
3 Copyright 2002 Tungsten Graphics Inc., Cedar Park, Texas.
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 on the rights to use, copy, modify, merge, publish, distribute, sub
11 license, and/or sell copies of the Software, and to permit persons to whom
12 the Software is furnished to do so, subject to the following conditions:
14 The above copyright notice and this permission notice (including the next
15 paragraph) shall be included in all copies or substantial portions of the
18 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
21 TUNGSTEN GRAPHICS AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
22 DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
23 OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
24 USE OR OTHER DEALINGS IN THE SOFTWARE.
26 **************************************************************************/
30 * Keith Whitwell <keith@tungstengraphics.com>
34 #ifndef __VBO_EXEC_H__
35 #define __VBO_EXEC_H__
37 #include "main/mfeatures.h"
38 #include "main/mtypes.h"
40 #include "vbo_attrib.h"
44 * Max number of primitives (number of glBegin/End pairs) per VBO.
46 #define VBO_MAX_PRIM 64
50 * Size of the VBO to use for glBegin/glVertex/glEnd-style rendering.
52 #define VBO_VERT_BUFFER_SIZE (1024*64) /* bytes */
55 /** Current vertex program mode */
57 VP_NONE
, /**< fixed function */
58 VP_NV
, /**< NV vertex program */
59 VP_ARB
/**< ARB vertex program or GLSL vertex shader */
63 struct vbo_exec_eval1_map
{
64 struct gl_1d_map
*map
;
68 struct vbo_exec_eval2_map
{
69 struct gl_2d_map
*map
;
75 struct vbo_exec_copied_vtx
{
76 GLfloat buffer
[VBO_ATTRIB_MAX
* 4 * VBO_MAX_COPIED_VERTS
];
81 /** Used to signal when transitioning from one kind of drawing method
86 DRAW_NONE
, /**< Initial value only */
93 struct vbo_exec_context
95 struct gl_context
*ctx
;
96 GLvertexformat vtxfmt
;
97 GLvertexformat vtxfmt_noop
;
99 enum draw_method last_draw_method
;
102 struct gl_buffer_object
*bufferobj
;
104 GLuint vertex_size
; /* in dwords */
106 struct _mesa_prim prim
[VBO_MAX_PRIM
];
110 GLfloat
*buffer_ptr
; /* cursor, points into buffer */
111 GLuint buffer_used
; /* in bytes */
112 GLfloat vertex
[VBO_ATTRIB_MAX
*4]; /* current vertex */
116 struct vbo_exec_copied_vtx copied
;
118 GLubyte attrsz
[VBO_ATTRIB_MAX
];
119 GLubyte active_sz
[VBO_ATTRIB_MAX
];
121 GLfloat
*attrptr
[VBO_ATTRIB_MAX
];
122 struct gl_client_array arrays
[VERT_ATTRIB_MAX
];
124 /* According to program mode, the values above plus current
125 * values are squashed down to the 32 attributes passed to the
126 * vertex program below:
128 const struct gl_client_array
*inputs
[VERT_ATTRIB_MAX
];
133 GLboolean recalculate_maps
;
134 struct vbo_exec_eval1_map map1
[VERT_ATTRIB_MAX
];
135 struct vbo_exec_eval2_map map2
[VERT_ATTRIB_MAX
];
139 /* Arrays and current values manipulated according to program
140 * mode, etc. These are the attributes as seen by vertex
143 const struct gl_client_array
*inputs
[VERT_ATTRIB_MAX
];
144 GLboolean recalculate_inputs
;
147 /* Which flags to set in vbo_exec_BeginVertices() */
148 GLbitfield begin_vertices_flags
;
151 GLint flush_call_depth
;
159 void vbo_exec_init( struct gl_context
*ctx
);
160 void vbo_exec_destroy( struct gl_context
*ctx
);
161 void vbo_exec_invalidate_state( struct gl_context
*ctx
, GLuint new_state
);
163 void vbo_exec_BeginVertices( struct gl_context
*ctx
);
164 void vbo_exec_FlushVertices( struct gl_context
*ctx
, GLuint flags
);
167 /* Internal functions:
169 void vbo_exec_array_init( struct vbo_exec_context
*exec
);
170 void vbo_exec_array_destroy( struct vbo_exec_context
*exec
);
173 void vbo_exec_vtx_init( struct vbo_exec_context
*exec
);
174 void vbo_exec_vtx_destroy( struct vbo_exec_context
*exec
);
178 * This is called by glBegin, glDrawArrays and glDrawElements (and
179 * variations of those calls). When we transition from immediate mode
180 * drawing to array drawing we need to invalidate the array state.
182 * glBegin/End builds vertex arrays. Those arrays may look identical
183 * to glDrawArrays arrays except that the position of the elements may
184 * be different. For example, arrays of (position3v, normal3f) vs. arrays
185 * of (normal3f, position3f). So we need to make sure we notify drivers
186 * that arrays may be changing.
189 vbo_draw_method(struct vbo_exec_context
*exec
, enum draw_method method
)
191 if (exec
->last_draw_method
!= method
) {
192 struct gl_context
*ctx
= exec
->ctx
;
193 ctx
->Driver
.UpdateState(ctx
, _NEW_ARRAY
);
194 exec
->last_draw_method
= method
;
201 void vbo_exec_vtx_flush( struct vbo_exec_context
*exec
, GLboolean unmap
);
202 void vbo_exec_vtx_map( struct vbo_exec_context
*exec
);
204 #else /* FEATURE_beginend */
207 vbo_exec_vtx_flush( struct vbo_exec_context
*exec
, GLboolean unmap
)
212 vbo_exec_vtx_map( struct vbo_exec_context
*exec
)
216 #endif /* FEATURE_beginend */
218 void vbo_exec_vtx_wrap( struct vbo_exec_context
*exec
);
220 void vbo_exec_eval_update( struct vbo_exec_context
*exec
);
222 void vbo_exec_do_EvalCoord2f( struct vbo_exec_context
*exec
,
223 GLfloat u
, GLfloat v
);
225 void vbo_exec_do_EvalCoord1f( struct vbo_exec_context
*exec
,