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authorKeith Whitwell <keithw@vmware.com>2009-03-04 16:06:05 +0000
committerKeith Whitwell <keithw@vmware.com>2009-03-04 16:06:05 +0000
commit579ef8ab1984d895867f547afa60b3bec4c4599a (patch)
treeb62661bafc866ab4a6f995845c54a22e88ab0e62 /src/mesa
parentf9ce417aaf14c00e72e92307b910de5dbed1bb6d (diff)
vbo: avoid getting buffer_ptr and buffer_map out of sync
Diffstat (limited to 'src/mesa')
-rw-r--r--src/mesa/vbo/vbo_exec_api.c3
-rw-r--r--src/mesa/vbo/vbo_exec_draw.c6
2 files changed, 8 insertions, 1 deletions
diff --git a/src/mesa/vbo/vbo_exec_api.c b/src/mesa/vbo/vbo_exec_api.c
index 9c2d065913..a1e66aec63 100644
--- a/src/mesa/vbo/vbo_exec_api.c
+++ b/src/mesa/vbo/vbo_exec_api.c
@@ -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;
}
}
}
diff --git a/src/mesa/vbo/vbo_exec_draw.c b/src/mesa/vbo/vbo_exec_draw.c
index 38b6c56f47..4b44b30b32 100644
--- a/src/mesa/vbo/vbo_exec_draw.c
+++ b/src/mesa/vbo/vbo_exec_draw.c
@@ -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_ptr != NULL);
+
ctx->Driver.UnmapBuffer(ctx, target, exec->vtx.bufferobj);
exec->vtx.buffer_map = NULL;
exec->vtx.buffer_ptr = NULL;
@@ -296,6 +299,7 @@ void vbo_exec_vtx_map( struct vbo_exec_context *exec )
(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);
}