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// Copyright 2019 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef SRC_GRAPHICS_LIB_COMPUTE_SPINEL_PATH_BUILDER_H_
#define SRC_GRAPHICS_LIB_COMPUTE_SPINEL_PATH_BUILDER_H_
//
//
//
#include "spinel/spinel.h"
#include "state_assert.h"
//
// clang-format off
//
typedef enum spinel_path_builder_state_e
{
SPN_PATH_BUILDER_STATE_READY,
SPN_PATH_BUILDER_STATE_BUILDING
} spinel_path_builder_state_e;
//
// We define all path geometry types here since their differences are
// mechanical and we may add or remove types if necessary.
//
#define SPN_PATH_BUILDER_PRIM_TYPE_EXPAND() \
SPN_PATH_BUILDER_PRIM_TYPE_EXPAND_X(line, SPN_BLOCK_ID_TAG_PATH_LINE , 4) \
SPN_PATH_BUILDER_PRIM_TYPE_EXPAND_X(quad, SPN_BLOCK_ID_TAG_PATH_QUAD , 6) \
SPN_PATH_BUILDER_PRIM_TYPE_EXPAND_X(cubic, SPN_BLOCK_ID_TAG_PATH_CUBIC , 8) \
SPN_PATH_BUILDER_PRIM_TYPE_EXPAND_X(rat_quad, SPN_BLOCK_ID_TAG_PATH_RAT_QUAD , 7) \
SPN_PATH_BUILDER_PRIM_TYPE_EXPAND_X(rat_cubic,SPN_BLOCK_ID_TAG_PATH_RAT_CUBIC,10)
#define SPN_PATH_BUILDER_PRIM_TYPE_COUNT 5
//
//
//
struct spinel_path_builder_coords_next
{
struct {
#undef SPN_PATH_BUILDER_PRIM_TYPE_EXPAND_X
#define SPN_PATH_BUILDER_PRIM_TYPE_EXPAND_X(_p,_i,_n) \
float * _p[_n];
SPN_PATH_BUILDER_PRIM_TYPE_EXPAND()
} coords;
union {
uint32_t aN[SPN_PATH_BUILDER_PRIM_TYPE_COUNT];
struct {
#undef SPN_PATH_BUILDER_PRIM_TYPE_EXPAND_X
#define SPN_PATH_BUILDER_PRIM_TYPE_EXPAND_X(_p,_i,_n) \
uint32_t _p;
SPN_PATH_BUILDER_PRIM_TYPE_EXPAND()
};
} rem;
};
//
//
//
struct spinel_path_builder
{
struct spinel_path_builder_impl * impl;
spinel_result_t (* begin )(struct spinel_path_builder_impl * impl);
spinel_result_t (* end )(struct spinel_path_builder_impl * impl, spinel_path_t * path);
spinel_result_t (* release )(struct spinel_path_builder_impl * impl);
spinel_result_t (* flush )(struct spinel_path_builder_impl * impl);
#undef SPN_PATH_BUILDER_PRIM_TYPE_EXPAND_X
#define SPN_PATH_BUILDER_PRIM_TYPE_EXPAND_X(_p,_i,_n) \
spinel_result_t (* _p )(struct spinel_path_builder_impl * impl);
SPN_PATH_BUILDER_PRIM_TYPE_EXPAND()
struct spinel_path_builder_coords_next cn;
struct {
float x;
float y;
} curr[2];
int32_t ref_count;
SPN_ASSERT_STATE_DECLARE(spinel_path_builder_state_e);
};
//
// clang-format on
//
#endif // SRC_GRAPHICS_LIB_COMPUTE_SPINEL_PATH_BUILDER_H_