2 * Mesa 3-D graphics library
5 * Copyright (C) 1999-2005 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>
28 #include "main/imports.h"
29 #include "main/mtypes.h"
30 #include "main/api_arrayelt.h"
31 #include "main/bufferobj.h"
32 #include "math/m_eval.h"
34 #include "vbo_context.h"
38 #define NR_LEGACY_ATTRIBS 16
39 #define NR_GENERIC_ATTRIBS 16
40 #define NR_MAT_ATTRIBS 12
43 static GLuint check_size( const GLfloat *attr )
45 if (attr[3] != 1.0) return 4;
46 if (attr[2] != 0.0) return 3;
47 if (attr[1] != 0.0) return 2;
52 static void init_legacy_currval(struct gl_context *ctx)
54 struct vbo_context *vbo = vbo_context(ctx);
55 struct gl_client_array *arrays = vbo->legacy_currval;
58 memset(arrays, 0, sizeof(*arrays) * NR_LEGACY_ATTRIBS);
60 /* Set up a constant (StrideB == 0) array for each current
63 for (i = 0; i < NR_LEGACY_ATTRIBS; i++) {
64 struct gl_client_array *cl = &arrays[i];
66 /* Size will have to be determined at runtime:
68 cl->Size = check_size(ctx->Current.Attrib[i]);
74 cl->Ptr = (const void *)ctx->Current.Attrib[i];
75 cl->_ElementSize = cl->Size * sizeof(GLfloat);
76 _mesa_reference_buffer_object(ctx, &cl->BufferObj,
77 ctx->Shared->NullBufferObj);
82 static void init_generic_currval(struct gl_context *ctx)
84 struct vbo_context *vbo = vbo_context(ctx);
85 struct gl_client_array *arrays = vbo->generic_currval;
88 memset(arrays, 0, sizeof(*arrays) * NR_GENERIC_ATTRIBS);
90 for (i = 0; i < NR_GENERIC_ATTRIBS; i++) {
91 struct gl_client_array *cl = &arrays[i];
93 /* This will have to be determined at runtime:
98 cl->Ptr = (const void *)ctx->Current.Attrib[VERT_ATTRIB_GENERIC0 + i];
102 cl->_ElementSize = cl->Size * sizeof(GLfloat);
103 _mesa_reference_buffer_object(ctx, &cl->BufferObj,
104 ctx->Shared->NullBufferObj);
109 static void init_mat_currval(struct gl_context *ctx)
111 struct vbo_context *vbo = vbo_context(ctx);
112 struct gl_client_array *arrays = vbo->mat_currval;
115 ASSERT(NR_MAT_ATTRIBS == MAT_ATTRIB_MAX);
117 memset(arrays, 0, sizeof(*arrays) * NR_MAT_ATTRIBS);
119 /* Set up a constant (StrideB == 0) array for each current
122 for (i = 0; i < NR_MAT_ATTRIBS; i++) {
123 struct gl_client_array *cl = &arrays[i];
125 /* Size is fixed for the material attributes, for others will
126 * be determined at runtime:
128 switch (i - VERT_ATTRIB_GENERIC0) {
129 case MAT_ATTRIB_FRONT_SHININESS:
130 case MAT_ATTRIB_BACK_SHININESS:
133 case MAT_ATTRIB_FRONT_INDEXES:
134 case MAT_ATTRIB_BACK_INDEXES:
142 cl->Ptr = (const void *)ctx->Light.Material.Attrib[i];
144 cl->Format = GL_RGBA;
148 cl->_ElementSize = cl->Size * sizeof(GLfloat);
149 _mesa_reference_buffer_object(ctx, &cl->BufferObj,
150 ctx->Shared->NullBufferObj);
155 GLboolean _vbo_CreateContext( struct gl_context *ctx )
157 struct vbo_context *vbo = CALLOC_STRUCT(vbo_context);
159 ctx->swtnl_im = (void *)vbo;
161 /* Initialize the arrayelt helper
163 if (!ctx->aelt_context &&
164 !_ae_create_context( ctx )) {
168 /* TODO: remove these pointers.
170 vbo->legacy_currval = &vbo->currval[VBO_ATTRIB_POS];
171 vbo->generic_currval = &vbo->currval[VBO_ATTRIB_GENERIC0];
172 vbo->mat_currval = &vbo->currval[VBO_ATTRIB_MAT_FRONT_AMBIENT];
174 init_legacy_currval( ctx );
175 init_generic_currval( ctx );
176 init_mat_currval( ctx );
178 /* Build mappings from VERT_ATTRIB -> VBO_ATTRIB depending on type
179 * of vertex program active.
184 /* When no vertex program, pull in the material attributes in
185 * the 16..32 generic range.
187 for (i = 0; i < 16; i++)
188 vbo->map_vp_none[i] = i;
189 for (i = 0; i < 12; i++)
190 vbo->map_vp_none[16+i] = VBO_ATTRIB_MAT_FRONT_AMBIENT + i;
191 for (i = 0; i < 4; i++)
192 vbo->map_vp_none[28+i] = i;
194 for (i = 0; i < Elements(vbo->map_vp_arb); i++)
195 vbo->map_vp_arb[i] = i;
199 /* Hook our functions into exec and compile dispatch tables. These
200 * will pretty much be permanently installed, which means that the
201 * vtxfmt mechanism can be removed now.
203 vbo_exec_init( ctx );
204 if (ctx->API == API_OPENGL)
205 vbo_save_init( ctx );
213 void _vbo_InvalidateState( struct gl_context *ctx, GLuint new_state )
215 vbo_exec_invalidate_state(ctx, new_state);
219 void _vbo_DestroyContext( struct gl_context *ctx )
221 struct vbo_context *vbo = vbo_context(ctx);
223 if (ctx->aelt_context) {
224 _ae_destroy_context( ctx );
225 ctx->aelt_context = NULL;
231 for (i = 0; i < VBO_ATTRIB_MAX; i++) {
232 _mesa_reference_buffer_object(ctx, &vbo->currval[i].BufferObj, NULL);
235 vbo_exec_destroy(ctx);
236 if (ctx->API == API_OPENGL)
237 vbo_save_destroy(ctx);
239 ctx->swtnl_im = NULL;
244 void vbo_set_draw_func(struct gl_context *ctx, vbo_draw_func func)
246 struct vbo_context *vbo = vbo_context(ctx);
247 vbo->draw_prims = func;