diff options
| -rw-r--r-- | src/mesa/vbo/vbo_primitive_restart.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/src/mesa/vbo/vbo_primitive_restart.c b/src/mesa/vbo/vbo_primitive_restart.c index 75e760fc9de..e0bd233eeb4 100644 --- a/src/mesa/vbo/vbo_primitive_restart.c +++ b/src/mesa/vbo/vbo_primitive_restart.c @@ -180,6 +180,39 @@ vbo_sw_primitive_restart(struct gl_context *ctx, GLboolean map_ib = ib->obj->Name && !ib->obj->Pointer; void *ptr; + /* If there is an indirect buffer, map it and extract the draw params */ + if (indirect && prims[0].is_indirect) { + struct _mesa_prim new_prim = *prims; + struct _mesa_index_buffer new_ib = *ib; + const uint32_t *indirect_params; + if (!ctx->Driver.MapBufferRange(ctx, 0, indirect->Size, GL_MAP_READ_BIT, + indirect)) { + + /* something went wrong with mapping, give up */ + _mesa_error(ctx, GL_OUT_OF_MEMORY, + "failed to map indirect buffer for sw primitive restart"); + return; + } + + assert(nr_prims == 1); + indirect_params = (const uint32_t *) ADD_POINTERS(indirect->Pointer, + new_prim.indirect_offset); + + new_prim.is_indirect = 0; + new_prim.count = indirect_params[0]; + new_prim.num_instances = indirect_params[1]; + new_prim.start = indirect_params[2]; + new_prim.basevertex = indirect_params[3]; + new_prim.base_instance = indirect_params[4]; + + new_ib.count = new_prim.count; + + prims = &new_prim; + ib = &new_ib; + + ctx->Driver.UnmapBuffer(ctx, indirect); + } + /* Find the sub-primitives. These are regions in the index buffer which * are split based on the primitive restart index value. */ |