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vbo: second attempt - avoid getting buffer_ptr and buffer_map out of sync

This commit is contained in:
Keith Whitwell 2009-03-04 17:01:47 +00:00
parent 89f1f8f0b8
commit 368ca83a3f
2 changed files with 10 additions and 1 deletions
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3
src/mesa/vbo/vbo_exec_api.c
View File

@ -675,6 +675,7 @@ void vbo_use_buffer_objects(GLcontext *ctx)
if (exec->vtx.buffer_map) {
_mesa_align_free(exec->vtx.buffer_map);
exec->vtx.buffer_map = NULL;
exec->vtx.buffer_ptr = NULL;
}
/* Allocate a real buffer object now */
@ -700,6 +701,7 @@ void vbo_exec_vtx_init( struct vbo_exec_context *exec )
ASSERT(!exec->vtx.buffer_map);
exec->vtx.buffer_map = (GLfloat *)ALIGN_MALLOC(VBO_VERT_BUFFER_SIZE, 64);
exec->vtx.buffer_ptr = exec->vtx.buffer_map;
vbo_exec_vtxfmt_init( exec );
@ -735,6 +737,7 @@ void vbo_exec_vtx_destroy( struct vbo_exec_context *exec )
if (exec->vtx.buffer_map) {
ALIGN_FREE(exec->vtx.buffer_map);
exec->vtx.buffer_map = NULL;
exec->vtx.buffer_ptr = NULL;
}
}
}

8
src/mesa/vbo/vbo_exec_draw.c
View File

@ -243,7 +243,10 @@ static void vbo_exec_vtx_unmap( struct vbo_exec_context *exec )
exec->vtx.buffer_used += (exec->vtx.buffer_ptr -
exec->vtx.buffer_map) * sizeof(float);
assert(exec->vtx.buffer_used <= VBO_VERT_BUFFER_SIZE);
assert(exec->vtx.buffer_ptr != NULL);
ctx->Driver.UnmapBuffer(ctx, target, exec->vtx.bufferobj);
exec->vtx.buffer_map = NULL;
exec->vtx.buffer_ptr = NULL;
@ -264,6 +267,7 @@ void vbo_exec_vtx_map( struct vbo_exec_context *exec )
if (exec->vtx.buffer_map != NULL) {
assert(0);
exec->vtx.buffer_map = NULL;
exec->vtx.buffer_ptr = NULL;
}
if (VBO_VERT_BUFFER_SIZE > exec->vtx.buffer_used + 1024 &&
@ -280,6 +284,7 @@ void vbo_exec_vtx_map( struct vbo_exec_context *exec )
GL_MAP_UNSYNCHRONIZED_BIT |
MESA_MAP_NOWAIT_BIT),
exec->vtx.bufferobj);
exec->vtx.buffer_ptr = exec->vtx.buffer_map;
}
if (exec->vtx.buffer_map) {
@ -294,6 +299,7 @@ void vbo_exec_vtx_map( struct vbo_exec_context *exec )
exec->vtx.buffer_map =
(GLfloat *)ctx->Driver.MapBuffer(ctx, target, access, exec->vtx.bufferobj);
exec->vtx.buffer_ptr = exec->vtx.buffer_map;
}
if (0) _mesa_printf("map %d..\n", exec->vtx.buffer_used);