1 /* 2 * Mesa 3-D graphics library 3 * 4 * Copyright (C) 1999-2005 Brian Paul All Rights Reserved. 5 * 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: 12 * 13 * The above copyright notice and this permission notice shall be included 14 * in all copies or substantial portions of the Software. 15 * 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. 23 * 24 * Authors: 25 * Keith Whitwell <keithw (at) vmware.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 37 static GLuint check_size( const GLfloat *attr ) 38 { 39 if (attr[3] != 1.0F) return 4; 40 if (attr[2] != 0.0F) return 3; 41 if (attr[1] != 0.0F) return 2; 42 return 1; 43 } 44 45 46 /** 47 * Helper for initializing a vertex array. 48 */ 49 static void 50 init_array(struct gl_context *ctx, struct gl_vertex_array *cl, 51 unsigned size, const void *pointer) 52 { 53 memset(cl, 0, sizeof(*cl)); 54 55 cl->Size = size; 56 cl->Type = GL_FLOAT; 57 cl->Format = GL_RGBA; 58 cl->StrideB = 0; 59 cl->_ElementSize = cl->Size * sizeof(GLfloat); 60 cl->Ptr = pointer; 61 62 _mesa_reference_buffer_object(ctx, &cl->BufferObj, 63 ctx->Shared->NullBufferObj); 64 } 65 66 67 /** 68 * Set up the vbo->currval arrays to point at the context's current 69 * vertex attributes (with strides = 0). 70 */ 71 static void init_legacy_currval(struct gl_context *ctx) 72 { 73 struct vbo_context *vbo = vbo_context(ctx); 74 GLuint i; 75 76 /* Set up a constant (StrideB == 0) array for each current 77 * attribute: 78 */ 79 for (i = 0; i < VERT_ATTRIB_FF_MAX; i++) { 80 struct gl_vertex_array *cl = &vbo->currval[VERT_ATTRIB_FF(i)]; 81 82 init_array(ctx, cl, 83 check_size(ctx->Current.Attrib[i]), 84 ctx->Current.Attrib[i]); 85 } 86 } 87 88 89 static void init_generic_currval(struct gl_context *ctx) 90 { 91 struct vbo_context *vbo = vbo_context(ctx); 92 GLuint i; 93 94 for (i = 0; i < VERT_ATTRIB_GENERIC_MAX; i++) { 95 struct gl_vertex_array *cl = &vbo->currval[VBO_ATTRIB_GENERIC0 + i]; 96 97 init_array(ctx, cl, 1, ctx->Current.Attrib[VERT_ATTRIB_GENERIC0 + i]); 98 } 99 } 100 101 102 static void init_mat_currval(struct gl_context *ctx) 103 { 104 struct vbo_context *vbo = vbo_context(ctx); 105 GLuint i; 106 107 /* Set up a constant (StrideB == 0) array for each current 108 * attribute: 109 */ 110 for (i = 0; i < MAT_ATTRIB_MAX; i++) { 111 struct gl_vertex_array *cl = 112 &vbo->currval[VBO_ATTRIB_MAT_FRONT_AMBIENT + i]; 113 unsigned size; 114 115 /* Size is fixed for the material attributes, for others will 116 * be determined at runtime: 117 */ 118 switch (i) { 119 case MAT_ATTRIB_FRONT_SHININESS: 120 case MAT_ATTRIB_BACK_SHININESS: 121 size = 1; 122 break; 123 case MAT_ATTRIB_FRONT_INDEXES: 124 case MAT_ATTRIB_BACK_INDEXES: 125 size = 3; 126 break; 127 default: 128 size = 4; 129 break; 130 } 131 132 init_array(ctx, cl, size, ctx->Light.Material.Attrib[i]); 133 } 134 } 135 136 static void 137 vbo_draw_indirect_prims(struct gl_context *ctx, 138 GLuint mode, 139 struct gl_buffer_object *indirect_data, 140 GLsizeiptr indirect_offset, 141 unsigned draw_count, 142 unsigned stride, 143 struct gl_buffer_object *indirect_params, 144 GLsizeiptr indirect_params_offset, 145 const struct _mesa_index_buffer *ib) 146 { 147 struct vbo_context *vbo = vbo_context(ctx); 148 struct _mesa_prim *prim; 149 GLsizei i; 150 151 prim = calloc(draw_count, sizeof(*prim)); 152 if (prim == NULL) { 153 _mesa_error(ctx, GL_OUT_OF_MEMORY, "gl%sDraw%sIndirect%s", 154 (draw_count > 1) ? "Multi" : "", 155 ib ? "Elements" : "Arrays", 156 indirect_params ? "CountARB" : ""); 157 return; 158 } 159 160 prim[0].begin = 1; 161 prim[draw_count - 1].end = 1; 162 for (i = 0; i < draw_count; ++i, indirect_offset += stride) { 163 prim[i].mode = mode; 164 prim[i].indexed = !!ib; 165 prim[i].indirect_offset = indirect_offset; 166 prim[i].is_indirect = 1; 167 prim[i].draw_id = i; 168 } 169 170 vbo->draw_prims(ctx, prim, draw_count, 171 ib, false, ~0, ~0, 172 NULL, 0, 173 ctx->DrawIndirectBuffer); 174 175 free(prim); 176 } 177 178 179 GLboolean _vbo_CreateContext( struct gl_context *ctx ) 180 { 181 struct vbo_context *vbo = CALLOC_STRUCT(vbo_context); 182 183 ctx->vbo_context = vbo; 184 185 /* Initialize the arrayelt helper 186 */ 187 if (!ctx->aelt_context && 188 !_ae_create_context( ctx )) { 189 return GL_FALSE; 190 } 191 192 init_legacy_currval( ctx ); 193 init_generic_currval( ctx ); 194 init_mat_currval( ctx ); 195 vbo_set_indirect_draw_func(ctx, vbo_draw_indirect_prims); 196 197 /* Build mappings from VERT_ATTRIB -> VBO_ATTRIB depending on type 198 * of vertex program active. 199 */ 200 { 201 GLuint i; 202 203 /* identity mapping */ 204 for (i = 0; i < ARRAY_SIZE(vbo->map_vp_none); i++) 205 vbo->map_vp_none[i] = i; 206 /* map material attribs to generic slots */ 207 for (i = 0; i < MAT_ATTRIB_MAX; i++) 208 vbo->map_vp_none[VERT_ATTRIB_GENERIC(i)] 209 = VBO_ATTRIB_MAT_FRONT_AMBIENT + i; 210 211 for (i = 0; i < ARRAY_SIZE(vbo->map_vp_arb); i++) 212 vbo->map_vp_arb[i] = i; 213 } 214 215 216 /* Hook our functions into exec and compile dispatch tables. These 217 * will pretty much be permanently installed, which means that the 218 * vtxfmt mechanism can be removed now. 219 */ 220 vbo_exec_init( ctx ); 221 if (ctx->API == API_OPENGL_COMPAT) 222 vbo_save_init( ctx ); 223 224 _math_init_eval(); 225 226 return GL_TRUE; 227 } 228 229 230 void _vbo_InvalidateState( struct gl_context *ctx, GLbitfield new_state ) 231 { 232 vbo_exec_invalidate_state(ctx, new_state); 233 } 234 235 236 void _vbo_DestroyContext( struct gl_context *ctx ) 237 { 238 struct vbo_context *vbo = vbo_context(ctx); 239 240 if (ctx->aelt_context) { 241 _ae_destroy_context( ctx ); 242 ctx->aelt_context = NULL; 243 } 244 245 if (vbo) { 246 GLuint i; 247 248 for (i = 0; i < VBO_ATTRIB_MAX; i++) { 249 _mesa_reference_buffer_object(ctx, &vbo->currval[i].BufferObj, NULL); 250 } 251 252 vbo_exec_destroy(ctx); 253 if (ctx->API == API_OPENGL_COMPAT) 254 vbo_save_destroy(ctx); 255 free(vbo); 256 ctx->vbo_context = NULL; 257 } 258 } 259 260 261 void vbo_set_draw_func(struct gl_context *ctx, vbo_draw_func func) 262 { 263 struct vbo_context *vbo = vbo_context(ctx); 264 vbo->draw_prims = func; 265 } 266 267 268 void vbo_set_indirect_draw_func(struct gl_context *ctx, 269 vbo_indirect_draw_func func) 270 { 271 struct vbo_context *vbo = vbo_context(ctx); 272 vbo->draw_indirect_prims = func; 273 } 274
