1 /*
2 * Mesa 3-D graphics library
3 * Version: 6.3
4 *
5 * Copyright (C) 1999-2005 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 * Authors:
25 * Keith Whitwell <keith@tungstengraphics.com>
26 */
27
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"
33 #include "vbo.h"
34 #include "vbo_context.h"
35
36 #define NR_MAT_ATTRIBS 12
37
check_size(const GLfloat * attr)38 static GLuint check_size( const GLfloat *attr )
39 {
40 if (attr[3] != 1.0) return 4;
41 if (attr[2] != 0.0) return 3;
42 if (attr[1] != 0.0) return 2;
43 return 1;
44 }
45
46
init_legacy_currval(struct gl_context * ctx)47 static void init_legacy_currval(struct gl_context *ctx)
48 {
49 struct vbo_context *vbo = vbo_context(ctx);
50 struct gl_client_array *arrays = &vbo->currval[VBO_ATTRIB_POS];
51 GLuint i;
52
53 memset(arrays, 0, sizeof(*arrays) * VERT_ATTRIB_FF_MAX);
54
55 /* Set up a constant (StrideB == 0) array for each current
56 * attribute:
57 */
58 for (i = 0; i < VERT_ATTRIB_FF_MAX; i++) {
59 struct gl_client_array *cl = &arrays[i];
60
61 /* Size will have to be determined at runtime:
62 */
63 cl->Size = check_size(ctx->Current.Attrib[i]);
64 cl->Stride = 0;
65 cl->StrideB = 0;
66 cl->Enabled = 1;
67 cl->Type = GL_FLOAT;
68 cl->Format = GL_RGBA;
69 cl->Ptr = (const void *)ctx->Current.Attrib[i];
70 cl->_ElementSize = cl->Size * sizeof(GLfloat);
71 _mesa_reference_buffer_object(ctx, &cl->BufferObj,
72 ctx->Shared->NullBufferObj);
73 }
74 }
75
76
init_generic_currval(struct gl_context * ctx)77 static void init_generic_currval(struct gl_context *ctx)
78 {
79 struct vbo_context *vbo = vbo_context(ctx);
80 struct gl_client_array *arrays = &vbo->currval[VBO_ATTRIB_GENERIC0];
81 GLuint i;
82
83 memset(arrays, 0, sizeof(*arrays) * VERT_ATTRIB_GENERIC_MAX);
84
85 for (i = 0; i < VERT_ATTRIB_GENERIC_MAX; i++) {
86 struct gl_client_array *cl = &arrays[i];
87
88 /* This will have to be determined at runtime:
89 */
90 cl->Size = 1;
91 cl->Type = GL_FLOAT;
92 cl->Format = GL_RGBA;
93 cl->Ptr = (const void *)ctx->Current.Attrib[VERT_ATTRIB_GENERIC0 + i];
94 cl->Stride = 0;
95 cl->StrideB = 0;
96 cl->Enabled = 1;
97 cl->_ElementSize = cl->Size * sizeof(GLfloat);
98 _mesa_reference_buffer_object(ctx, &cl->BufferObj,
99 ctx->Shared->NullBufferObj);
100 }
101 }
102
103
init_mat_currval(struct gl_context * ctx)104 static void init_mat_currval(struct gl_context *ctx)
105 {
106 struct vbo_context *vbo = vbo_context(ctx);
107 struct gl_client_array *arrays =
108 &vbo->currval[VBO_ATTRIB_MAT_FRONT_AMBIENT];
109 GLuint i;
110
111 ASSERT(NR_MAT_ATTRIBS == MAT_ATTRIB_MAX);
112
113 memset(arrays, 0, sizeof(*arrays) * NR_MAT_ATTRIBS);
114
115 /* Set up a constant (StrideB == 0) array for each current
116 * attribute:
117 */
118 for (i = 0; i < NR_MAT_ATTRIBS; i++) {
119 struct gl_client_array *cl = &arrays[i];
120
121 /* Size is fixed for the material attributes, for others will
122 * be determined at runtime:
123 */
124 switch (i - VERT_ATTRIB_GENERIC0) {
125 case MAT_ATTRIB_FRONT_SHININESS:
126 case MAT_ATTRIB_BACK_SHININESS:
127 cl->Size = 1;
128 break;
129 case MAT_ATTRIB_FRONT_INDEXES:
130 case MAT_ATTRIB_BACK_INDEXES:
131 cl->Size = 3;
132 break;
133 default:
134 cl->Size = 4;
135 break;
136 }
137
138 cl->Ptr = (const void *)ctx->Light.Material.Attrib[i];
139 cl->Type = GL_FLOAT;
140 cl->Format = GL_RGBA;
141 cl->Stride = 0;
142 cl->StrideB = 0;
143 cl->Enabled = 1;
144 cl->_ElementSize = cl->Size * sizeof(GLfloat);
145 _mesa_reference_buffer_object(ctx, &cl->BufferObj,
146 ctx->Shared->NullBufferObj);
147 }
148 }
149
150
_vbo_CreateContext(struct gl_context * ctx)151 GLboolean _vbo_CreateContext( struct gl_context *ctx )
152 {
153 struct vbo_context *vbo = CALLOC_STRUCT(vbo_context);
154
155 ctx->swtnl_im = (void *)vbo;
156
157 /* Initialize the arrayelt helper
158 */
159 if (!ctx->aelt_context &&
160 !_ae_create_context( ctx )) {
161 return GL_FALSE;
162 }
163
164 init_legacy_currval( ctx );
165 init_generic_currval( ctx );
166 init_mat_currval( ctx );
167
168 /* Build mappings from VERT_ATTRIB -> VBO_ATTRIB depending on type
169 * of vertex program active.
170 */
171 {
172 GLuint i;
173
174 /* identity mapping */
175 for (i = 0; i < Elements(vbo->map_vp_none); i++)
176 vbo->map_vp_none[i] = i;
177 /* map material attribs to generic slots */
178 for (i = 0; i < NR_MAT_ATTRIBS; i++)
179 vbo->map_vp_none[VERT_ATTRIB_GENERIC(i)]
180 = VBO_ATTRIB_MAT_FRONT_AMBIENT + i;
181
182 for (i = 0; i < Elements(vbo->map_vp_arb); i++)
183 vbo->map_vp_arb[i] = i;
184 }
185
186
187 /* Hook our functions into exec and compile dispatch tables. These
188 * will pretty much be permanently installed, which means that the
189 * vtxfmt mechanism can be removed now.
190 */
191 vbo_exec_init( ctx );
192 if (ctx->API == API_OPENGL)
193 vbo_save_init( ctx );
194
195 _math_init_eval();
196
197 return GL_TRUE;
198 }
199
200
_vbo_InvalidateState(struct gl_context * ctx,GLuint new_state)201 void _vbo_InvalidateState( struct gl_context *ctx, GLuint new_state )
202 {
203 vbo_exec_invalidate_state(ctx, new_state);
204 }
205
206
_vbo_DestroyContext(struct gl_context * ctx)207 void _vbo_DestroyContext( struct gl_context *ctx )
208 {
209 struct vbo_context *vbo = vbo_context(ctx);
210
211 if (ctx->aelt_context) {
212 _ae_destroy_context( ctx );
213 ctx->aelt_context = NULL;
214 }
215
216 if (vbo) {
217 GLuint i;
218
219 for (i = 0; i < VBO_ATTRIB_MAX; i++) {
220 _mesa_reference_buffer_object(ctx, &vbo->currval[i].BufferObj, NULL);
221 }
222
223 vbo_exec_destroy(ctx);
224 if (ctx->API == API_OPENGL)
225 vbo_save_destroy(ctx);
226 FREE(vbo);
227 ctx->swtnl_im = NULL;
228 }
229 }
230
231
vbo_set_draw_func(struct gl_context * ctx,vbo_draw_func func)232 void vbo_set_draw_func(struct gl_context *ctx, vbo_draw_func func)
233 {
234 struct vbo_context *vbo = vbo_context(ctx);
235 vbo->draw_prims = func;
236 }
237
238