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/context.h"
31 #include "main/enums.h"
32 #include "main/state.h"
33 #include "main/macros.h"
35 #include "vbo_context.h"
38 static void vbo_exec_debug_verts( struct vbo_exec_context *exec )
40 GLuint count = exec->vtx.vert_count;
43 _mesa_printf("%s: %u vertices %d primitives, %d vertsize\n",
47 exec->vtx.vertex_size);
49 for (i = 0 ; i < exec->vtx.prim_count ; i++) {
50 struct _mesa_prim *prim = &exec->vtx.prim[i];
51 _mesa_printf(" prim %d: %s%s %d..%d %s %s\n",
53 _mesa_lookup_enum_by_nr(prim->mode),
54 prim->weak ? " (weak)" : "",
56 prim->start + prim->count,
57 prim->begin ? "BEGIN" : "(wrap)",
58 prim->end ? "END" : "(wrap)");
64 * NOTE: Need to have calculated primitives by this point -- do it on the fly.
65 * NOTE: Old 'parity' issue is gone.
67 static GLuint vbo_copy_vertices( struct vbo_exec_context *exec )
69 GLuint nr = exec->vtx.prim[exec->vtx.prim_count-1].count;
71 GLuint sz = exec->vtx.vertex_size;
72 GLfloat *dst = exec->vtx.copied.buffer;
73 GLfloat *src = (exec->vtx.buffer_map +
74 exec->vtx.prim[exec->vtx.prim_count-1].start *
75 exec->vtx.vertex_size);
78 switch( exec->ctx->Driver.CurrentExecPrimitive )
84 for (i = 0 ; i < ovf ; i++)
85 _mesa_memcpy( dst+i*sz, src+(nr-ovf+i)*sz, sz * sizeof(GLfloat) );
89 for (i = 0 ; i < ovf ; i++)
90 _mesa_memcpy( dst+i*sz, src+(nr-ovf+i)*sz, sz * sizeof(GLfloat) );
94 for (i = 0 ; i < ovf ; i++)
95 _mesa_memcpy( dst+i*sz, src+(nr-ovf+i)*sz, sz * sizeof(GLfloat) );
101 _mesa_memcpy( dst, src+(nr-1)*sz, sz * sizeof(GLfloat) );
105 case GL_TRIANGLE_FAN:
110 _mesa_memcpy( dst, src+0, sz * sizeof(GLfloat) );
113 _mesa_memcpy( dst, src+0, sz * sizeof(GLfloat) );
114 _mesa_memcpy( dst+sz, src+(nr-1)*sz, sz * sizeof(GLfloat) );
117 case GL_TRIANGLE_STRIP:
118 /* no parity issue, but need to make sure the tri is not drawn twice */
120 exec->vtx.prim[exec->vtx.prim_count-1].count--;
125 case 0: ovf = 0; break;
126 case 1: ovf = 1; break;
127 default: ovf = 2 + (nr&1); break;
129 for (i = 0 ; i < ovf ; i++)
130 _mesa_memcpy( dst+i*sz, src+(nr-ovf+i)*sz, sz * sizeof(GLfloat) );
132 case PRIM_OUTSIDE_BEGIN_END:
142 /* TODO: populate these as the vertex is defined:
144 static void vbo_exec_bind_arrays( GLcontext *ctx )
146 struct vbo_context *vbo = vbo_context(ctx);
147 struct vbo_exec_context *exec = &vbo->exec;
148 struct gl_client_array *arrays = exec->vtx.arrays;
149 GLuint count = exec->vtx.vert_count;
150 GLubyte *data = (GLubyte *)exec->vtx.buffer_map;
153 GLbitfield varying_inputs = 0x0;
155 /* Install the default (ie Current) attributes first, then overlay
158 switch (get_program_mode(exec->ctx)) {
160 for (attr = 0; attr < 16; attr++) {
161 exec->vtx.inputs[attr] = &vbo->legacy_currval[attr];
163 for (attr = 0; attr < MAT_ATTRIB_MAX; attr++) {
164 exec->vtx.inputs[attr + 16] = &vbo->mat_currval[attr];
166 map = vbo->map_vp_none;
170 /* The aliasing of attributes for NV vertex programs has already
171 * occurred. NV vertex programs cannot access material values,
172 * nor attributes greater than VERT_ATTRIB_TEX7.
174 for (attr = 0; attr < 16; attr++) {
175 exec->vtx.inputs[attr] = &vbo->legacy_currval[attr];
176 exec->vtx.inputs[attr + 16] = &vbo->generic_currval[attr];
178 map = vbo->map_vp_arb;
180 /* check if VERT_ATTRIB_POS is not read but VERT_BIT_GENERIC0 is read.
181 * In that case we effectively need to route the data from
182 * glVertexAttrib(0, val) calls to feed into the GENERIC0 input.
184 if ((ctx->VertexProgram._Current->Base.InputsRead & VERT_BIT_POS) == 0 &&
185 (ctx->VertexProgram._Current->Base.InputsRead & VERT_BIT_GENERIC0)) {
186 exec->vtx.inputs[16] = exec->vtx.inputs[0];
187 exec->vtx.attrsz[16] = exec->vtx.attrsz[0];
188 exec->vtx.attrsz[0] = 0;
195 /* Make all active attributes (including edgeflag) available as
198 for (attr = 0; attr < VERT_ATTRIB_MAX ; attr++) {
199 const GLuint src = map[attr];
201 if (exec->vtx.attrsz[src]) {
202 /* override the default array set above */
203 exec->vtx.inputs[attr] = &arrays[attr];
205 if (exec->vtx.bufferobj->Name) {
206 /* a real buffer obj: Ptr is an offset, not a pointer*/
208 assert(exec->vtx.bufferobj->Pointer); /* buf should be mapped */
209 offset = (GLbyte *) data - (GLbyte *) exec->vtx.bufferobj->Pointer;
211 arrays[attr].Ptr = (void *) offset;
214 /* Ptr into ordinary app memory */
215 arrays[attr].Ptr = (void *) data;
217 arrays[attr].Size = exec->vtx.attrsz[src];
218 arrays[attr].StrideB = exec->vtx.vertex_size * sizeof(GLfloat);
219 arrays[attr].Stride = exec->vtx.vertex_size * sizeof(GLfloat);
220 arrays[attr].Type = GL_FLOAT;
221 arrays[attr].Format = GL_RGBA;
222 arrays[attr].Enabled = 1;
223 _mesa_reference_buffer_object(ctx,
224 &arrays[attr].BufferObj,
225 exec->vtx.bufferobj);
226 arrays[attr]._MaxElement = count; /* ??? */
228 data += exec->vtx.attrsz[src] * sizeof(GLfloat);
229 varying_inputs |= 1<<attr;
233 _mesa_set_varying_vp_inputs( ctx, varying_inputs );
237 static void vbo_exec_vtx_unmap( struct vbo_exec_context *exec )
239 GLenum target = GL_ARRAY_BUFFER_ARB;
241 if (exec->vtx.bufferobj->Name) {
242 GLcontext *ctx = exec->ctx;
244 if(ctx->Driver.FlushMappedBufferRange) {
245 GLintptr offset = exec->vtx.buffer_used - exec->vtx.bufferobj->Offset;
246 GLsizeiptr length = (exec->vtx.buffer_ptr - exec->vtx.buffer_map) * sizeof(float);
249 ctx->Driver.FlushMappedBufferRange(ctx, target,
251 exec->vtx.bufferobj);
254 exec->vtx.buffer_used += (exec->vtx.buffer_ptr -
255 exec->vtx.buffer_map) * sizeof(float);
257 assert(exec->vtx.buffer_used <= VBO_VERT_BUFFER_SIZE);
258 assert(exec->vtx.buffer_ptr != NULL);
260 ctx->Driver.UnmapBuffer(ctx, target, exec->vtx.bufferobj);
261 exec->vtx.buffer_map = NULL;
262 exec->vtx.buffer_ptr = NULL;
263 exec->vtx.max_vert = 0;
267 void vbo_exec_vtx_map( struct vbo_exec_context *exec )
269 GLcontext *ctx = exec->ctx;
270 GLenum target = GL_ARRAY_BUFFER_ARB;
271 GLenum access = GL_READ_WRITE_ARB;
272 GLenum usage = GL_STREAM_DRAW_ARB;
274 if (exec->vtx.bufferobj->Name == 0)
277 if (exec->vtx.buffer_map != NULL) {
279 exec->vtx.buffer_map = NULL;
280 exec->vtx.buffer_ptr = NULL;
283 if (VBO_VERT_BUFFER_SIZE > exec->vtx.buffer_used + 1024 &&
284 ctx->Driver.MapBufferRange)
286 exec->vtx.buffer_map =
287 (GLfloat *)ctx->Driver.MapBufferRange(ctx,
289 exec->vtx.buffer_used,
290 (VBO_VERT_BUFFER_SIZE -
291 exec->vtx.buffer_used),
293 GL_MAP_INVALIDATE_RANGE_BIT |
294 GL_MAP_UNSYNCHRONIZED_BIT |
295 MESA_MAP_NOWAIT_BIT),
296 exec->vtx.bufferobj);
297 exec->vtx.buffer_ptr = exec->vtx.buffer_map;
300 if (!exec->vtx.buffer_map) {
301 exec->vtx.buffer_used = 0;
303 ctx->Driver.BufferData(ctx, target,
304 VBO_VERT_BUFFER_SIZE,
305 NULL, usage, exec->vtx.bufferobj);
307 exec->vtx.buffer_map =
308 (GLfloat *)ctx->Driver.MapBuffer(ctx, target, access, exec->vtx.bufferobj);
309 exec->vtx.buffer_ptr = exec->vtx.buffer_map;
312 if (0) _mesa_printf("map %d..\n", exec->vtx.buffer_used);
318 * Execute the buffer and save copied verts.
320 void vbo_exec_vtx_flush( struct vbo_exec_context *exec,
324 vbo_exec_debug_verts( exec );
327 if (exec->vtx.prim_count &&
328 exec->vtx.vert_count) {
330 exec->vtx.copied.nr = vbo_copy_vertices( exec );
332 if (exec->vtx.copied.nr != exec->vtx.vert_count) {
333 GLcontext *ctx = exec->ctx;
335 /* Before the update_state() as this may raise _NEW_ARRAY
336 * from _mesa_set_varying_vp_inputs().
338 vbo_exec_bind_arrays( ctx );
341 _mesa_update_state( ctx );
343 if (exec->vtx.bufferobj->Name) {
344 vbo_exec_vtx_unmap( exec );
347 if (0) _mesa_printf("%s %d %d\n", __FUNCTION__, exec->vtx.prim_count,
348 exec->vtx.vert_count);
350 vbo_context(ctx)->draw_prims( ctx,
353 exec->vtx.prim_count,
356 exec->vtx.vert_count - 1);
358 /* If using a real VBO, get new storage -- unless asked not to.
360 if (exec->vtx.bufferobj->Name && !unmap) {
361 vbo_exec_vtx_map( exec );
366 /* May have to unmap explicitly if we didn't draw:
369 exec->vtx.bufferobj->Name &&
370 exec->vtx.buffer_map) {
371 vbo_exec_vtx_unmap( exec );
376 exec->vtx.max_vert = 0;
378 exec->vtx.max_vert = ((VBO_VERT_BUFFER_SIZE - exec->vtx.buffer_used) /
379 (exec->vtx.vertex_size * sizeof(GLfloat)));
382 exec->vtx.buffer_ptr = exec->vtx.buffer_map;
383 exec->vtx.prim_count = 0;
384 exec->vtx.vert_count = 0;