tnl: Only map the necessary buffer range in bind_indices
Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Brian Paul <brianp@vmware.com>
Acked-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Eric Anholt <eric@anholt.net>
diff --git a/src/mesa/tnl/t_draw.c b/src/mesa/tnl/t_draw.c
index a23d175..86af4b7 100644
--- a/src/mesa/tnl/t_draw.c
+++ b/src/mesa/tnl/t_draw.c
@@ -347,16 +347,32 @@
}
if (ib->obj->Name && !ib->obj->Pointer) {
+ unsigned map_size;
+
+ switch (ib->type) {
+ case GL_UNSIGNED_BYTE:
+ map_size = ib->count * sizeof(GLubyte);
+ break;
+ case GL_UNSIGNED_SHORT:
+ map_size = ib->count * sizeof(GLushort);
+ break;
+ case GL_UNSIGNED_INT:
+ map_size = ib->count * sizeof(GLuint);
+ break;
+ default:
+ assert(0);
+ map_size = 0;
+ }
+
bo[*nr_bo] = ib->obj;
(*nr_bo)++;
- ctx->Driver.MapBufferRange(ctx, 0, ib->obj->Size, GL_MAP_READ_BIT,
- ib->obj);
-
+ ptr = ctx->Driver.MapBufferRange(ctx, (GLsizeiptr) ib->ptr, map_size,
+ GL_MAP_READ_BIT, ib->obj);
assert(ib->obj->Pointer);
+ } else {
+ ptr = ib->ptr;
}
- ptr = ADD_POINTERS(ib->obj->Pointer, ib->ptr);
-
if (ib->type == GL_UNSIGNED_INT && VB->Primitive[0].basevertex == 0) {
VB->Elts = (GLuint *) ptr;
}