summaryrefslogtreecommitdiffstats
path: root/src/mesa/main/varray.h
blob: f94ebac992033b556524377ce4253d050a8dacb0 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
/*
 * Mesa 3-D graphics library
 *
 * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.
 * Copyright (C) 2009  VMware, Inc.  All Rights Reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included
 * in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 */


#ifndef VARRAY_H
#define VARRAY_H


#include "glheader.h"
#include "bufferobj.h"

struct gl_client_array;
struct gl_context;


/**
 * Compute the index of the last array element that can be safely accessed in
 * a vertex array.  We can really only do this when the array lives in a VBO.
 * The array->_MaxElement field will be updated.
 * Later in glDrawArrays/Elements/etc we can do some bounds checking.
 */
static inline void
_mesa_update_array_max_element(struct gl_client_array *array)
{
   assert(array->Enabled);

   if (array->BufferObj->Name) {
      GLsizeiptrARB offset = (GLsizeiptrARB) array->Ptr;
      GLsizeiptrARB bufSize = (GLsizeiptrARB) array->BufferObj->Size;

      if (offset < bufSize) {
         const GLuint stride = array->StrideB ?
                                 array->StrideB : array->_ElementSize;
         array->_MaxElement = (bufSize - offset + stride
                                  - array->_ElementSize) / stride;
      }
      else {
	 array->_MaxElement = 0;
      }
   }
   else {
      /* user-space array, no idea how big it is */
      array->_MaxElement = 2 * 1000 * 1000 * 1000; /* just a big number */
   }
}


/**
 * Returns a pointer to the vertex attribute data in a client array,
 * or the offset into the vertex buffer for an array that resides in
 * a vertex buffer.
 */
static inline const GLubyte *
_mesa_vertex_attrib_address(const struct gl_vertex_attrib_array *array,
                            const struct gl_vertex_buffer_binding *binding)
{
   if (_mesa_is_bufferobj(binding->BufferObj))
      return (const GLubyte *) (binding->Offset + array->RelativeOffset);
   else
      return array->Ptr;       
}

/**
 * Sets the fields in a gl_client_array to values derived from a
 * gl_vertex_attrib_array and a gl_vertex_buffer_binding.
 */
static inline void
_mesa_update_client_array(struct gl_context *ctx,
                          struct gl_client_array *dst,
                          const struct gl_vertex_attrib_array *src,
                          const struct gl_vertex_buffer_binding *binding)
{
   dst->Size = src->Size;
   dst->Type = src->Type;
   dst->Format = src->Format;
   dst->Stride = src->Stride;
   dst->StrideB = binding->Stride;
   dst->Ptr = _mesa_vertex_attrib_address(src, binding);
   dst->Enabled = src->Enabled;
   dst->Normalized = src->Normalized;
   dst->Integer = src->Integer;
   dst->InstanceDivisor = binding->InstanceDivisor;
   dst->_ElementSize = src->_ElementSize;
   _mesa_reference_buffer_object(ctx, &dst->BufferObj, binding->BufferObj);
}

static inline bool
_mesa_attr_zero_aliases_vertex(struct gl_context *ctx)
{
   const bool is_forward_compatible_context =
      ctx->Const.ContextFlags & GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT;

   /* In OpenGL 3.1 attribute 0 becomes non-magic, just like in OpenGL ES
    * 2.0.  Note that we cannot just check for API_OPENGL_COMPAT here because
    * that will erroneously allow this usage in a 3.0 forward-compatible
    * context too.
    */
   return (ctx->API == API_OPENGLES
           || (ctx->API == API_OPENGL_COMPAT
               && !is_forward_compatible_context));
}

extern void GLAPIENTRY
_mesa_VertexPointer(GLint size, GLenum type, GLsizei stride,
                    const GLvoid *ptr);


extern void GLAPIENTRY
_mesa_NormalPointer(GLenum type, GLsizei stride, const GLvoid *ptr);


extern void GLAPIENTRY
_mesa_ColorPointer(GLint size, GLenum type, GLsizei stride, const GLvoid *ptr);


extern void GLAPIENTRY
_mesa_IndexPointer(GLenum type, GLsizei stride, const GLvoid *ptr);


extern void GLAPIENTRY
_mesa_TexCoordPointer(GLint size, GLenum type, GLsizei stride,
                      const GLvoid *ptr);


extern void GLAPIENTRY
_mesa_EdgeFlagPointer(GLsizei stride, const GLvoid *ptr);


extern void GLAPIENTRY
_mesa_VertexPointerEXT(GLint size, GLenum type, GLsizei stride,
                       GLsizei count, const GLvoid *ptr);


extern void GLAPIENTRY
_mesa_NormalPointerEXT(GLenum type, GLsizei stride, GLsizei count,
                       const GLvoid *ptr);


extern void GLAPIENTRY
_mesa_ColorPointerEXT(GLint size, GLenum type, GLsizei stride, GLsizei count,
                      const GLvoid *ptr);


extern void GLAPIENTRY
_mesa_IndexPointerEXT(GLenum type, GLsizei stride, GLsizei count,
                      const GLvoid *ptr);


extern void GLAPIENTRY
_mesa_TexCoordPointerEXT(GLint size, GLenum type, GLsizei stride,
                         GLsizei count, const GLvoid *ptr);


extern void GLAPIENTRY
_mesa_EdgeFlagPointerEXT(GLsizei stride, GLsizei count, const GLboolean *ptr);


extern void GLAPIENTRY
_mesa_FogCoordPointer(GLenum type, GLsizei stride, const GLvoid *ptr);


extern void GLAPIENTRY
_mesa_SecondaryColorPointer(GLint size, GLenum type,
			       GLsizei stride, const GLvoid *ptr);


extern void GLAPIENTRY
_mesa_PointSizePointerOES(GLenum type, GLsizei stride, const GLvoid *ptr);


extern void GLAPIENTRY
_mesa_VertexAttribPointer(GLuint index, GLint size, GLenum type,
                             GLboolean normalized, GLsizei stride,
                             const GLvoid *pointer);

void GLAPIENTRY
_mesa_VertexAttribIPointer(GLuint index, GLint size, GLenum type,
                           GLsizei stride, const GLvoid *ptr);


extern void GLAPIENTRY
_mesa_EnableVertexAttribArray(GLuint index);


extern void GLAPIENTRY
_mesa_DisableVertexAttribArray(GLuint index);


extern void GLAPIENTRY
_mesa_GetVertexAttribdv(GLuint index, GLenum pname, GLdouble *params);


extern void GLAPIENTRY
_mesa_GetVertexAttribfv(GLuint index, GLenum pname, GLfloat *params);


extern void GLAPIENTRY
_mesa_GetVertexAttribiv(GLuint index, GLenum pname, GLint *params);


extern void GLAPIENTRY
_mesa_GetVertexAttribIiv(GLuint index, GLenum pname, GLint *params);


extern void GLAPIENTRY
_mesa_GetVertexAttribIuiv(GLuint index, GLenum pname, GLuint *params);


extern void GLAPIENTRY
_mesa_GetVertexAttribPointerv(GLuint index, GLenum pname, GLvoid **pointer);


extern void GLAPIENTRY
_mesa_InterleavedArrays(GLenum format, GLsizei stride, const GLvoid *pointer);


extern void GLAPIENTRY
_mesa_MultiDrawArrays( GLenum mode, const GLint *first,
                          const GLsizei *count, GLsizei primcount );

extern void GLAPIENTRY
_mesa_MultiDrawElementsEXT( GLenum mode, const GLsizei *count, GLenum type,
                            const GLvoid **indices, GLsizei primcount );

extern void GLAPIENTRY
_mesa_MultiDrawElementsBaseVertex( GLenum mode,
				   const GLsizei *count, GLenum type,
				   const GLvoid **indices, GLsizei primcount,
				   const GLint *basevertex);

extern void GLAPIENTRY
_mesa_MultiModeDrawArraysIBM( const GLenum * mode, const GLint * first,
			      const GLsizei * count,
			      GLsizei primcount, GLint modestride );


extern void GLAPIENTRY
_mesa_MultiModeDrawElementsIBM( const GLenum * mode, const GLsizei * count,
				GLenum type, const GLvoid * const * indices,
				GLsizei primcount, GLint modestride );

extern void GLAPIENTRY
_mesa_LockArraysEXT(GLint first, GLsizei count);

extern void GLAPIENTRY
_mesa_UnlockArraysEXT( void );


extern void GLAPIENTRY
_mesa_DrawArrays(GLenum mode, GLint first, GLsizei count);

extern void GLAPIENTRY
_mesa_DrawElements(GLenum mode, GLsizei count, GLenum type,
                   const GLvoid *indices);

extern void GLAPIENTRY
_mesa_DrawRangeElements(GLenum mode, GLuint start, GLuint end, GLsizei count,
                        GLenum type, const GLvoid *indices);

extern void GLAPIENTRY
_mesa_DrawElementsBaseVertex(GLenum mode, GLsizei count, GLenum type,
			     const GLvoid *indices, GLint basevertex);

extern void GLAPIENTRY
_mesa_DrawRangeElementsBaseVertex(GLenum mode, GLuint start, GLuint end,
				  GLsizei count, GLenum type,
				  const GLvoid *indices,
				  GLint basevertex);

extern void GLAPIENTRY
_mesa_DrawTransformFeedback(GLenum mode, GLuint name);

extern void GLAPIENTRY
_mesa_PrimitiveRestartIndex(GLuint index);


extern void GLAPIENTRY
_mesa_VertexAttribDivisor(GLuint index, GLuint divisor);

extern unsigned
_mesa_primitive_restart_index(const struct gl_context *ctx, GLenum ib_type);

extern void GLAPIENTRY
_mesa_BindVertexBuffer(GLuint bindingIndex, GLuint buffer, GLintptr offset,
                       GLsizei stride);

extern void GLAPIENTRY
_mesa_BindVertexBuffers(GLuint first, GLsizei count, const GLuint *buffers,
                        const GLintptr *offsets, const GLsizei *strides);

extern void GLAPIENTRY
_mesa_VertexAttribFormat(GLuint attribIndex, GLint size, GLenum type,
                         GLboolean normalized, GLuint relativeOffset);

extern void GLAPIENTRY
_mesa_VertexAttribIFormat(GLuint attribIndex, GLint size, GLenum type,
                          GLuint relativeOffset);

extern void GLAPIENTRY
_mesa_VertexAttribLFormat(GLuint attribIndex, GLint size, GLenum type,
                          GLuint relativeOffset);

extern void GLAPIENTRY
_mesa_VertexAttribBinding(GLuint attribIndex, GLuint bindingIndex);

extern void GLAPIENTRY
_mesa_VertexBindingDivisor(GLuint bindingIndex, GLuint divisor);


extern void
_mesa_copy_client_array(struct gl_context *ctx,
                        struct gl_client_array *dst,
                        struct gl_client_array *src);

extern void
_mesa_copy_vertex_attrib_array(struct gl_context *ctx,
                               struct gl_vertex_attrib_array *dst,
                               const struct gl_vertex_attrib_array *src);

extern void
_mesa_copy_vertex_buffer_binding(struct gl_context *ctx,
                                 struct gl_vertex_buffer_binding *dst,
                                 const struct gl_vertex_buffer_binding *src);

extern void
_mesa_print_arrays(struct gl_context *ctx);

extern void
_mesa_init_varray( struct gl_context * ctx );

extern void 
_mesa_free_varray_data(struct gl_context *ctx);

#endif