src/mesa/main/varray.h

   1 /*
   2  * Mesa 3-D graphics library
   3  *
   4  * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.
   5  * Copyright (C) 2009  VMware, Inc.  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  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  21  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  22  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  23  * OTHER DEALINGS IN THE SOFTWARE.
  24  */
  25
  26
  27 #ifndef VARRAY_H
  28 #define VARRAY_H
  29
  30
  31 #include "glheader.h"
  32 #include "bufferobj.h"
  33
  34 struct gl_client_array;
  35 struct gl_context;
  36
  37
  38 /**
  39  * Compute the index of the last array element that can be safely accessed in
  40  * a vertex array.  We can really only do this when the array lives in a VBO.
  41  * The array->_MaxElement field will be updated.
  42  * Later in glDrawArrays/Elements/etc we can do some bounds checking.
  43  */
  44 static inline void
  45 _mesa_update_array_max_element(struct gl_client_array *array)
  46 {
  47    assert(array->Enabled);
  48
  49    if (array->BufferObj->Name) {
  50       GLsizeiptrARB offset = (GLsizeiptrARB) array->Ptr;
  51       GLsizeiptrARB bufSize = (GLsizeiptrARB) array->BufferObj->Size;
  52
  53       if (offset < bufSize) {
  54          const GLuint stride = array->StrideB ?
  55                                  array->StrideB : array->_ElementSize;
  56          array->_MaxElement = (bufSize - offset + stride
  57                                   - array->_ElementSize) / stride;
  58       }
  59       else {
  60          array->_MaxElement = 0;
  61       }
  62    }
  63    else {
  64       /* user-space array, no idea how big it is */
  65       array->_MaxElement = 2 * 1000 * 1000 * 1000; /* just a big number */
  66    }
  67 }
  68
  69
  70 /**
  71  * Returns a pointer to the vertex attribute data in a client array,
  72  * or the offset into the vertex buffer for an array that resides in
  73  * a vertex buffer.
  74  */
  75 static inline const GLubyte *
  76 _mesa_vertex_attrib_address(const struct gl_vertex_attrib_array *array,
  77                             const struct gl_vertex_buffer_binding *binding)
  78 {
  79    if (_mesa_is_bufferobj(binding->BufferObj))
  80       return (const GLubyte *) (binding->Offset + array->RelativeOffset);
  81    else
  82       return array->Ptr;
  83 }
  84
  85 /**
  86  * Sets the fields in a gl_client_array to values derived from a
  87  * gl_vertex_attrib_array and a gl_vertex_buffer_binding.
  88  */
  89 static inline void
  90 _mesa_update_client_array(struct gl_context *ctx,
  91                           struct gl_client_array *dst,
  92                           const struct gl_vertex_attrib_array *src,
  93                           const struct gl_vertex_buffer_binding *binding)
  94 {
  95    dst->Size = src->Size;
  96    dst->Type = src->Type;
  97    dst->Format = src->Format;
  98    dst->Stride = src->Stride;
  99    dst->StrideB = binding->Stride;
 100    dst->Ptr = _mesa_vertex_attrib_address(src, binding);
 101    dst->Enabled = src->Enabled;
 102    dst->Normalized = src->Normalized;
 103    dst->Integer = src->Integer;
 104    dst->InstanceDivisor = binding->InstanceDivisor;
 105    dst->_ElementSize = src->_ElementSize;
 106    _mesa_reference_buffer_object(ctx, &dst->BufferObj, binding->BufferObj);
 107 }
 108
 109 static inline bool
 110 _mesa_attr_zero_aliases_vertex(struct gl_context *ctx)
 111 {
 112    const bool is_forward_compatible_context =
 113       ctx->Const.ContextFlags & GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT;
 114
 115    /* In OpenGL 3.1 attribute 0 becomes non-magic, just like in OpenGL ES
 116     * 2.0.  Note that we cannot just check for API_OPENGL_COMPAT here because
 117     * that will erroneously allow this usage in a 3.0 forward-compatible
 118     * context too.
 119     */
 120    return (ctx->API == API_OPENGLES
 121            || (ctx->API == API_OPENGL_COMPAT
 122                && !is_forward_compatible_context));
 123 }
 124
 125 extern void GLAPIENTRY
 126 _mesa_VertexPointer(GLint size, GLenum type, GLsizei stride,
 127                     const GLvoid *ptr);
 128
 129
 130 extern void GLAPIENTRY
 131 _mesa_NormalPointer(GLenum type, GLsizei stride, const GLvoid *ptr);
 132
 133
 134 extern void GLAPIENTRY
 135 _mesa_ColorPointer(GLint size, GLenum type, GLsizei stride, const GLvoid *ptr);
 136
 137
 138 extern void GLAPIENTRY
 139 _mesa_IndexPointer(GLenum type, GLsizei stride, const GLvoid *ptr);
 140
 141
 142 extern void GLAPIENTRY
 143 _mesa_TexCoordPointer(GLint size, GLenum type, GLsizei stride,
 144                       const GLvoid *ptr);
 145
 146
 147 extern void GLAPIENTRY
 148 _mesa_EdgeFlagPointer(GLsizei stride, const GLvoid *ptr);
 149
 150
 151 extern void GLAPIENTRY
 152 _mesa_VertexPointerEXT(GLint size, GLenum type, GLsizei stride,
 153                        GLsizei count, const GLvoid *ptr);
 154
 155
 156 extern void GLAPIENTRY
 157 _mesa_NormalPointerEXT(GLenum type, GLsizei stride, GLsizei count,
 158                        const GLvoid *ptr);
 159
 160
 161 extern void GLAPIENTRY
 162 _mesa_ColorPointerEXT(GLint size, GLenum type, GLsizei stride, GLsizei count,
 163                       const GLvoid *ptr);
 164
 165
 166 extern void GLAPIENTRY
 167 _mesa_IndexPointerEXT(GLenum type, GLsizei stride, GLsizei count,
 168                       const GLvoid *ptr);
 169
 170
 171 extern void GLAPIENTRY
 172 _mesa_TexCoordPointerEXT(GLint size, GLenum type, GLsizei stride,
 173                          GLsizei count, const GLvoid *ptr);
 174
 175
 176 extern void GLAPIENTRY
 177 _mesa_EdgeFlagPointerEXT(GLsizei stride, GLsizei count, const GLboolean *ptr);
 178
 179
 180 extern void GLAPIENTRY
 181 _mesa_FogCoordPointer(GLenum type, GLsizei stride, const GLvoid *ptr);
 182
 183
 184 extern void GLAPIENTRY
 185 _mesa_SecondaryColorPointer(GLint size, GLenum type,
 186                                GLsizei stride, const GLvoid *ptr);
 187
 188
 189 extern void GLAPIENTRY
 190 _mesa_PointSizePointerOES(GLenum type, GLsizei stride, const GLvoid *ptr);
 191
 192
 193 extern void GLAPIENTRY
 194 _mesa_VertexAttribPointer(GLuint index, GLint size, GLenum type,
 195                              GLboolean normalized, GLsizei stride,
 196                              const GLvoid *pointer);
 197
 198 void GLAPIENTRY
 199 _mesa_VertexAttribIPointer(GLuint index, GLint size, GLenum type,
 200                            GLsizei stride, const GLvoid *ptr);
 201
 202
 203 extern void GLAPIENTRY
 204 _mesa_EnableVertexAttribArray(GLuint index);
 205
 206
 207 extern void GLAPIENTRY
 208 _mesa_DisableVertexAttribArray(GLuint index);
 209
 210
 211 extern void GLAPIENTRY
 212 _mesa_GetVertexAttribdv(GLuint index, GLenum pname, GLdouble *params);
 213
 214
 215 extern void GLAPIENTRY
 216 _mesa_GetVertexAttribfv(GLuint index, GLenum pname, GLfloat *params);
 217
 218
 219 extern void GLAPIENTRY
 220 _mesa_GetVertexAttribiv(GLuint index, GLenum pname, GLint *params);
 221
 222
 223 extern void GLAPIENTRY
 224 _mesa_GetVertexAttribIiv(GLuint index, GLenum pname, GLint *params);
 225
 226
 227 extern void GLAPIENTRY
 228 _mesa_GetVertexAttribIuiv(GLuint index, GLenum pname, GLuint *params);
 229
 230
 231 extern void GLAPIENTRY
 232 _mesa_GetVertexAttribPointerv(GLuint index, GLenum pname, GLvoid **pointer);
 233
 234
 235 extern void GLAPIENTRY
 236 _mesa_InterleavedArrays(GLenum format, GLsizei stride, const GLvoid *pointer);
 237
 238
 239 extern void GLAPIENTRY
 240 _mesa_MultiDrawArrays( GLenum mode, const GLint *first,
 241                           const GLsizei *count, GLsizei primcount );
 242
 243 extern void GLAPIENTRY
 244 _mesa_MultiDrawElementsEXT( GLenum mode, const GLsizei *count, GLenum type,
 245                             const GLvoid **indices, GLsizei primcount );
 246
 247 extern void GLAPIENTRY
 248 _mesa_MultiDrawElementsBaseVertex( GLenum mode,
 249                                    const GLsizei *count, GLenum type,
 250                                    const GLvoid **indices, GLsizei primcount,
 251                                    const GLint *basevertex);
 252
 253 extern void GLAPIENTRY
 254 _mesa_MultiModeDrawArraysIBM( const GLenum * mode, const GLint * first,
 255                               const GLsizei * count,
 256                               GLsizei primcount, GLint modestride );
 257
 258
 259 extern void GLAPIENTRY
 260 _mesa_MultiModeDrawElementsIBM( const GLenum * mode, const GLsizei * count,
 261                                 GLenum type, const GLvoid * const * indices,
 262                                 GLsizei primcount, GLint modestride );
 263
 264 extern void GLAPIENTRY
 265 _mesa_LockArraysEXT(GLint first, GLsizei count);
 266
 267 extern void GLAPIENTRY
 268 _mesa_UnlockArraysEXT( void );
 269
 270
 271 extern void GLAPIENTRY
 272 _mesa_DrawArrays(GLenum mode, GLint first, GLsizei count);
 273
 274 extern void GLAPIENTRY
 275 _mesa_DrawElements(GLenum mode, GLsizei count, GLenum type,
 276                    const GLvoid *indices);
 277
 278 extern void GLAPIENTRY
 279 _mesa_DrawRangeElements(GLenum mode, GLuint start, GLuint end, GLsizei count,
 280                         GLenum type, const GLvoid *indices);
 281
 282 extern void GLAPIENTRY
 283 _mesa_DrawElementsBaseVertex(GLenum mode, GLsizei count, GLenum type,
 284                              const GLvoid *indices, GLint basevertex);
 285
 286 extern void GLAPIENTRY
 287 _mesa_DrawRangeElementsBaseVertex(GLenum mode, GLuint start, GLuint end,
 288                                   GLsizei count, GLenum type,
 289                                   const GLvoid *indices,
 290                                   GLint basevertex);
 291
 292 extern void GLAPIENTRY
 293 _mesa_DrawTransformFeedback(GLenum mode, GLuint name);
 294
 295 extern void GLAPIENTRY
 296 _mesa_PrimitiveRestartIndex(GLuint index);
 297
 298
 299 extern void GLAPIENTRY
 300 _mesa_VertexAttribDivisor(GLuint index, GLuint divisor);
 301
 302 extern unsigned
 303 _mesa_primitive_restart_index(const struct gl_context *ctx, GLenum ib_type);
 304
 305 extern void GLAPIENTRY
 306 _mesa_BindVertexBuffer(GLuint bindingIndex, GLuint buffer, GLintptr offset,
 307                        GLsizei stride);
 308
 309 extern void GLAPIENTRY
 310 _mesa_VertexAttribFormat(GLuint attribIndex, GLint size, GLenum type,
 311                          GLboolean normalized, GLuint relativeOffset);
 312
 313 extern void GLAPIENTRY
 314 _mesa_VertexAttribIFormat(GLuint attribIndex, GLint size, GLenum type,
 315                           GLuint relativeOffset);
 316
 317 extern void GLAPIENTRY
 318 _mesa_VertexAttribLFormat(GLuint attribIndex, GLint size, GLenum type,
 319                           GLuint relativeOffset);
 320
 321 extern void GLAPIENTRY
 322 _mesa_VertexAttribBinding(GLuint attribIndex, GLuint bindingIndex);
 323
 324 extern void GLAPIENTRY
 325 _mesa_VertexBindingDivisor(GLuint bindingIndex, GLuint divisor);
 326
 327
 328 extern void
 329 _mesa_copy_client_array(struct gl_context *ctx,
 330                         struct gl_client_array *dst,
 331                         struct gl_client_array *src);
 332
 333 extern void
 334 _mesa_copy_vertex_attrib_array(struct gl_context *ctx,
 335                                struct gl_vertex_attrib_array *dst,
 336                                const struct gl_vertex_attrib_array *src);
 337
 338 extern void
 339 _mesa_copy_vertex_buffer_binding(struct gl_context *ctx,
 340                                  struct gl_vertex_buffer_binding *dst,
 341                                  const struct gl_vertex_buffer_binding *src);
 342
 343 extern void
 344 _mesa_print_arrays(struct gl_context *ctx);
 345
 346 extern void
 347 _mesa_init_varray( struct gl_context * ctx );
 348
 349 extern void
 350 _mesa_free_varray_data(struct gl_context *ctx);
 351
 352 #endif