2 * Mesa 3-D graphics library
5 * Copyright (C) 1999-2008 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/glheader.h"
29 #include "main/bufferobj.h"
30 #include "main/compiler.h"
31 #include "main/enums.h"
32 #include "main/mfeatures.h"
33 #include "main/state.h"
35 #include "vbo_context.h"
42 vbo_exec_debug_verts( struct vbo_exec_context *exec )
44 GLuint count = exec->vtx.vert_count;
47 printf("%s: %u vertices %d primitives, %d vertsize\n",
51 exec->vtx.vertex_size);
53 for (i = 0 ; i < exec->vtx.prim_count ; i++) {
54 struct _mesa_prim *prim = &exec->vtx.prim[i];
55 printf(" prim %d: %s%s %d..%d %s %s\n",
57 _mesa_lookup_prim_by_nr(prim->mode),
58 prim->weak ? " (weak)" : "",
60 prim->start + prim->count,
61 prim->begin ? "BEGIN" : "(wrap)",
62 prim->end ? "END" : "(wrap)");
68 * NOTE: Need to have calculated primitives by this point -- do it on the fly.
69 * NOTE: Old 'parity' issue is gone.
72 vbo_copy_vertices( struct vbo_exec_context *exec )
74 GLuint nr = exec->vtx.prim[exec->vtx.prim_count-1].count;
76 GLuint sz = exec->vtx.vertex_size;
77 GLfloat *dst = exec->vtx.copied.buffer;
78 const GLfloat *src = (exec->vtx.buffer_map +
79 exec->vtx.prim[exec->vtx.prim_count-1].start *
80 exec->vtx.vertex_size);
83 switch (exec->ctx->Driver.CurrentExecPrimitive) {
88 for (i = 0 ; i < ovf ; i++)
89 memcpy( dst+i*sz, src+(nr-ovf+i)*sz, sz * sizeof(GLfloat) );
93 for (i = 0 ; i < ovf ; i++)
94 memcpy( dst+i*sz, src+(nr-ovf+i)*sz, sz * sizeof(GLfloat) );
98 for (i = 0 ; i < ovf ; i++)
99 memcpy( dst+i*sz, src+(nr-ovf+i)*sz, sz * sizeof(GLfloat) );
106 memcpy( dst, src+(nr-1)*sz, sz * sizeof(GLfloat) );
110 case GL_TRIANGLE_FAN:
116 memcpy( dst, src+0, sz * sizeof(GLfloat) );
120 memcpy( dst, src+0, sz * sizeof(GLfloat) );
121 memcpy( dst+sz, src+(nr-1)*sz, sz * sizeof(GLfloat) );
124 case GL_TRIANGLE_STRIP:
125 /* no parity issue, but need to make sure the tri is not drawn twice */
127 exec->vtx.prim[exec->vtx.prim_count-1].count--;
142 for (i = 0 ; i < ovf ; i++)
143 memcpy( dst+i*sz, src+(nr-ovf+i)*sz, sz * sizeof(GLfloat) );
145 case PRIM_OUTSIDE_BEGIN_END:
155 /* TODO: populate these as the vertex is defined:
158 vbo_exec_bind_arrays( struct gl_context *ctx )
160 struct vbo_context *vbo = vbo_context(ctx);
161 struct vbo_exec_context *exec = &vbo->exec;
162 struct gl_client_array *arrays = exec->vtx.arrays;
163 const GLuint count = exec->vtx.vert_count;
166 GLbitfield varying_inputs = 0x0;
168 /* Install the default (ie Current) attributes first, then overlay
171 switch (get_program_mode(exec->ctx)) {
173 for (attr = 0; attr < 16; attr++) {
174 exec->vtx.inputs[attr] = &vbo->legacy_currval[attr];
176 for (attr = 0; attr < MAT_ATTRIB_MAX; attr++) {
177 ASSERT(attr + 16 < Elements(exec->vtx.inputs));
178 exec->vtx.inputs[attr + 16] = &vbo->mat_currval[attr];
180 map = vbo->map_vp_none;
184 /* The aliasing of attributes for NV vertex programs has already
185 * occurred. NV vertex programs cannot access material values,
186 * nor attributes greater than VERT_ATTRIB_TEX7.
188 for (attr = 0; attr < 16; attr++) {
189 exec->vtx.inputs[attr] = &vbo->legacy_currval[attr];
190 ASSERT(attr + 16 < Elements(exec->vtx.inputs));
191 exec->vtx.inputs[attr + 16] = &vbo->generic_currval[attr];
193 map = vbo->map_vp_arb;
195 /* check if VERT_ATTRIB_POS is not read but VERT_BIT_GENERIC0 is read.
196 * In that case we effectively need to route the data from
197 * glVertexAttrib(0, val) calls to feed into the GENERIC0 input.
199 if ((ctx->VertexProgram._Current->Base.InputsRead & VERT_BIT_POS) == 0 &&
200 (ctx->VertexProgram._Current->Base.InputsRead & VERT_BIT_GENERIC0)) {
201 exec->vtx.inputs[16] = exec->vtx.inputs[0];
202 exec->vtx.attrsz[16] = exec->vtx.attrsz[0];
203 exec->vtx.attrptr[16] = exec->vtx.attrptr[0];
204 exec->vtx.attrsz[0] = 0;
211 /* Make all active attributes (including edgeflag) available as
214 for (attr = 0; attr < VERT_ATTRIB_MAX ; attr++) {
215 const GLuint src = map[attr];
217 if (exec->vtx.attrsz[src]) {
218 GLsizeiptr offset = (GLbyte *)exec->vtx.attrptr[src] -
219 (GLbyte *)exec->vtx.vertex;
221 /* override the default array set above */
222 ASSERT(attr < Elements(exec->vtx.inputs));
223 ASSERT(attr < Elements(exec->vtx.arrays)); /* arrays[] */
224 exec->vtx.inputs[attr] = &arrays[attr];
226 if (_mesa_is_bufferobj(exec->vtx.bufferobj)) {
227 /* a real buffer obj: Ptr is an offset, not a pointer*/
228 assert(exec->vtx.bufferobj->Pointer); /* buf should be mapped */
230 arrays[attr].Ptr = (GLubyte *)exec->vtx.bufferobj->Offset + offset;
233 /* Ptr into ordinary app memory */
234 arrays[attr].Ptr = (GLubyte *)exec->vtx.buffer_map + offset;
236 arrays[attr].Size = exec->vtx.attrsz[src];
237 arrays[attr].StrideB = exec->vtx.vertex_size * sizeof(GLfloat);
238 arrays[attr].Stride = exec->vtx.vertex_size * sizeof(GLfloat);
239 arrays[attr].Type = GL_FLOAT;
240 arrays[attr].Format = GL_RGBA;
241 arrays[attr].Enabled = 1;
242 arrays[attr]._ElementSize = arrays[attr].Size * sizeof(GLfloat);
243 _mesa_reference_buffer_object(ctx,
244 &arrays[attr].BufferObj,
245 exec->vtx.bufferobj);
246 arrays[attr]._MaxElement = count; /* ??? */
248 varying_inputs |= 1 << attr;
249 ctx->NewState |= _NEW_ARRAY;
253 _mesa_set_varying_vp_inputs( ctx, varying_inputs );
258 * Unmap the VBO. This is called before drawing.
261 vbo_exec_vtx_unmap( struct vbo_exec_context *exec )
263 GLenum target = GL_ARRAY_BUFFER_ARB;
265 if (_mesa_is_bufferobj(exec->vtx.bufferobj)) {
266 struct gl_context *ctx = exec->ctx;
268 if (ctx->Driver.FlushMappedBufferRange) {
269 GLintptr offset = exec->vtx.buffer_used - exec->vtx.bufferobj->Offset;
270 GLsizeiptr length = (exec->vtx.buffer_ptr - exec->vtx.buffer_map) * sizeof(float);
273 ctx->Driver.FlushMappedBufferRange(ctx, target,
275 exec->vtx.bufferobj);
278 exec->vtx.buffer_used += (exec->vtx.buffer_ptr -
279 exec->vtx.buffer_map) * sizeof(float);
281 assert(exec->vtx.buffer_used <= VBO_VERT_BUFFER_SIZE);
282 assert(exec->vtx.buffer_ptr != NULL);
284 ctx->Driver.UnmapBuffer(ctx, target, exec->vtx.bufferobj);
285 exec->vtx.buffer_map = NULL;
286 exec->vtx.buffer_ptr = NULL;
287 exec->vtx.max_vert = 0;
293 * Map the vertex buffer to begin storing glVertex, glColor, etc data.
296 vbo_exec_vtx_map( struct vbo_exec_context *exec )
298 struct gl_context *ctx = exec->ctx;
299 const GLenum target = GL_ARRAY_BUFFER_ARB;
300 const GLenum access = GL_READ_WRITE_ARB; /* for MapBuffer */
301 const GLenum accessRange = GL_MAP_WRITE_BIT | /* for MapBufferRange */
302 GL_MAP_INVALIDATE_RANGE_BIT |
303 GL_MAP_UNSYNCHRONIZED_BIT |
304 GL_MAP_FLUSH_EXPLICIT_BIT |
306 const GLenum usage = GL_STREAM_DRAW_ARB;
308 if (!_mesa_is_bufferobj(exec->vtx.bufferobj))
311 assert(!exec->vtx.buffer_map);
312 assert(!exec->vtx.buffer_ptr);
314 if (VBO_VERT_BUFFER_SIZE > exec->vtx.buffer_used + 1024 &&
315 ctx->Driver.MapBufferRange) {
316 /* The VBO exists and there's room for more */
317 exec->vtx.buffer_map =
318 (GLfloat *)ctx->Driver.MapBufferRange(ctx,
320 exec->vtx.buffer_used,
321 (VBO_VERT_BUFFER_SIZE -
322 exec->vtx.buffer_used),
324 exec->vtx.bufferobj);
325 exec->vtx.buffer_ptr = exec->vtx.buffer_map;
328 if (!exec->vtx.buffer_map) {
329 /* Need to allocate a new VBO */
330 exec->vtx.buffer_used = 0;
332 ctx->Driver.BufferData(ctx, target,
333 VBO_VERT_BUFFER_SIZE,
334 NULL, usage, exec->vtx.bufferobj);
337 if (ctx->Driver.MapBufferRange)
338 exec->vtx.buffer_map =
339 (GLfloat *)ctx->Driver.MapBufferRange(ctx, target,
340 0, VBO_VERT_BUFFER_SIZE,
342 exec->vtx.bufferobj);
343 if (!exec->vtx.buffer_map)
344 exec->vtx.buffer_map =
345 (GLfloat *)ctx->Driver.MapBuffer(ctx, target, access, exec->vtx.bufferobj);
346 assert(exec->vtx.buffer_map);
347 exec->vtx.buffer_ptr = exec->vtx.buffer_map;
351 printf("map %d..\n", exec->vtx.buffer_used);
357 * Execute the buffer and save copied verts.
358 * \param keep_unmapped if true, leave the VBO unmapped when we're done.
361 vbo_exec_vtx_flush(struct vbo_exec_context *exec, GLboolean keepUnmapped)
364 vbo_exec_debug_verts( exec );
366 if (exec->vtx.prim_count &&
367 exec->vtx.vert_count) {
369 exec->vtx.copied.nr = vbo_copy_vertices( exec );
371 if (exec->vtx.copied.nr != exec->vtx.vert_count) {
372 struct gl_context *ctx = exec->ctx;
374 /* Before the update_state() as this may raise _NEW_ARRAY
375 * from _mesa_set_varying_vp_inputs().
377 vbo_exec_bind_arrays( ctx );
380 _mesa_update_state( ctx );
382 if (_mesa_is_bufferobj(exec->vtx.bufferobj)) {
383 vbo_exec_vtx_unmap( exec );
387 printf("%s %d %d\n", __FUNCTION__, exec->vtx.prim_count,
388 exec->vtx.vert_count);
390 vbo_context(ctx)->draw_prims( ctx,
393 exec->vtx.prim_count,
397 exec->vtx.vert_count - 1);
399 /* If using a real VBO, get new storage -- unless asked not to.
401 if (_mesa_is_bufferobj(exec->vtx.bufferobj) && !keepUnmapped) {
402 vbo_exec_vtx_map( exec );
407 /* May have to unmap explicitly if we didn't draw:
410 _mesa_is_bufferobj(exec->vtx.bufferobj) &&
411 exec->vtx.buffer_map) {
412 vbo_exec_vtx_unmap( exec );
415 if (keepUnmapped || exec->vtx.vertex_size == 0)
416 exec->vtx.max_vert = 0;
418 exec->vtx.max_vert = ((VBO_VERT_BUFFER_SIZE - exec->vtx.buffer_used) /
419 (exec->vtx.vertex_size * sizeof(GLfloat)));
421 exec->vtx.buffer_ptr = exec->vtx.buffer_map;
422 exec->vtx.prim_count = 0;
423 exec->vtx.vert_count = 0;
427 #endif /* FEATURE_beginend */