2 * Mesa 3-D graphics library
5 * Copyright (C) 1999-2003 Brian Paul All Rights Reserved.
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:
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
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.
25 * Keith Whitwell <keith@tungstengraphics.com>
34 #include "vbo_context.h"
37 static void vbo_exec_debug_verts( struct vbo_exec_context *exec )
39 GLuint count = exec->vtx.vert_count;
42 _mesa_printf("%s: %u vertices %d primitives, %d vertsize\n",
46 exec->vtx.vertex_size);
48 for (i = 0 ; i < exec->vtx.prim_count ; i++) {
49 struct _mesa_prim *prim = &exec->vtx.prim[i];
50 _mesa_printf(" prim %d: %s%s %d..%d %s %s\n",
52 _mesa_lookup_enum_by_nr(prim->mode),
53 prim->weak ? " (weak)" : "",
55 prim->start + prim->count,
56 prim->begin ? "BEGIN" : "(wrap)",
57 prim->end ? "END" : "(wrap)");
63 * NOTE: Need to have calculated primitives by this point -- do it on the fly.
64 * NOTE: Old 'parity' issue is gone.
66 static GLuint vbo_copy_vertices( struct vbo_exec_context *exec )
68 GLuint nr = exec->vtx.prim[exec->vtx.prim_count-1].count;
70 GLuint sz = exec->vtx.vertex_size;
71 GLfloat *dst = exec->vtx.copied.buffer;
72 GLfloat *src = ((GLfloat *)exec->vtx.buffer_map +
73 exec->vtx.prim[exec->vtx.prim_count-1].start *
74 exec->vtx.vertex_size);
77 switch( exec->ctx->Driver.CurrentExecPrimitive )
83 for (i = 0 ; i < ovf ; i++)
84 _mesa_memcpy( dst+i*sz, src+(nr-ovf+i)*sz, sz * sizeof(GLfloat) );
88 for (i = 0 ; i < ovf ; i++)
89 _mesa_memcpy( dst+i*sz, src+(nr-ovf+i)*sz, sz * sizeof(GLfloat) );
93 for (i = 0 ; i < ovf ; i++)
94 _mesa_memcpy( dst+i*sz, src+(nr-ovf+i)*sz, sz * sizeof(GLfloat) );
100 _mesa_memcpy( dst, src+(nr-1)*sz, sz * sizeof(GLfloat) );
104 case GL_TRIANGLE_FAN:
109 _mesa_memcpy( dst, src+0, sz * sizeof(GLfloat) );
112 _mesa_memcpy( dst, src+0, sz * sizeof(GLfloat) );
113 _mesa_memcpy( dst+sz, src+(nr-1)*sz, sz * sizeof(GLfloat) );
116 case GL_TRIANGLE_STRIP:
117 /* no parity issue, but need to make sure the tri is not drawn twice */
119 exec->vtx.prim[exec->vtx.prim_count-1].count--;
124 case 0: ovf = 0; break;
125 case 1: ovf = 1; break;
126 default: ovf = 2 + (nr&1); break;
128 for (i = 0 ; i < ovf ; i++)
129 _mesa_memcpy( dst+i*sz, src+(nr-ovf+i)*sz, sz * sizeof(GLfloat) );
141 /* TODO: populate these as the vertex is defined:
143 static void vbo_exec_bind_arrays( GLcontext *ctx )
145 struct vbo_context *vbo = vbo_context(ctx);
146 struct vbo_exec_context *exec = &vbo->exec;
147 struct gl_client_array *arrays = exec->vtx.arrays;
148 GLuint count = exec->vtx.vert_count;
149 GLubyte *data = exec->vtx.buffer_map;
153 /* Install the default (ie Current) attributes first, then overlay
156 switch (get_program_mode(exec->ctx)) {
158 memcpy(arrays, vbo->legacy_currval, 16 * sizeof(arrays[0]));
159 memcpy(arrays + 16, vbo->mat_currval, MAT_ATTRIB_MAX * sizeof(arrays[0]));
160 map = vbo->map_vp_none;
164 /* The aliasing of attributes for NV vertex programs has already
165 * occurred. NV vertex programs cannot access material values,
166 * nor attributes greater than VERT_ATTRIB_TEX7.
168 memcpy(arrays, vbo->legacy_currval, 16 * sizeof(arrays[0]));
169 memcpy(arrays + 16, vbo->generic_currval, 16 * sizeof(arrays[0]));
170 map = vbo->map_vp_arb;
174 /* Make all active attributes (including edgeflag) available as
177 for (attr = 0; attr < VERT_ATTRIB_MAX ; attr++) {
178 GLuint src = map[attr];
180 if (exec->vtx.attrsz[src]) {
181 arrays[attr].Ptr = (void *)data;
182 arrays[attr].Size = exec->vtx.attrsz[src];
183 arrays[attr].StrideB = exec->vtx.vertex_size * sizeof(GLfloat);
184 arrays[attr].Stride = exec->vtx.vertex_size * sizeof(GLfloat);
185 arrays[attr].Type = GL_FLOAT;
186 arrays[attr].Enabled = 1;
187 arrays[attr].BufferObj = exec->vtx.bufferobj; /* NullBufferObj */
188 arrays[attr]._MaxElement = count; /* ??? */
190 data += exec->vtx.attrsz[attr] * sizeof(GLfloat);
197 * Execute the buffer and save copied verts.
199 void vbo_exec_vtx_flush( struct vbo_exec_context *exec )
202 vbo_exec_debug_verts( exec );
205 if (exec->vtx.prim_count &&
206 exec->vtx.vert_count) {
208 exec->vtx.copied.nr = vbo_copy_vertices( exec );
210 if (exec->vtx.copied.nr != exec->vtx.vert_count) {
211 GLcontext *ctx = exec->ctx;
213 vbo_exec_bind_arrays( ctx );
215 vbo_context(ctx)->draw_prims( ctx,
218 exec->vtx.prim_count,
221 exec->vtx.vert_count );
225 exec->vtx.prim_count = 0;
226 exec->vtx.vert_count = 0;
227 exec->vtx.vbptr = (GLfloat *)exec->vtx.buffer_map;