2 * Copyright (c) 2022 Samsung Electronics Co., Ltd.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
18 #include "dali-scene3d/public-api/loader/parse-renderer-state.h"
20 #include "dali/devel-api/common/map-wrapper.h"
28 namespace RendererState
32 std::map<std::string_view, Type> COMPARISONS{
33 #define DECL_COMPARISON(x) {#x, Comparison::x}
34 DECL_COMPARISON(NEVER),
35 DECL_COMPARISON(ALWAYS),
36 DECL_COMPARISON(LESS),
37 DECL_COMPARISON(GREATER),
38 DECL_COMPARISON(EQUAL),
39 DECL_COMPARISON(NOT_EQUAL),
40 DECL_COMPARISON(LESS_EQUAL),
41 DECL_COMPARISON(GREATER_EQUAL),
42 #undef DECL_COMPARISON
45 Type InterpretComparison(const std::string_view& str)
48 auto iFind = COMPARISONS.find(str);
49 if(iFind != COMPARISONS.end())
51 value = iFind->second;
56 std::map<std::string_view, Type> BLEND_FACTORS{
57 #define DECL_BLEND_FACTOR(x) {#x, Dali::Scene3D::Loader::BlendFactor::x}
58 DECL_BLEND_FACTOR(ZERO),
59 DECL_BLEND_FACTOR(ONE),
60 DECL_BLEND_FACTOR(SRC_COLOR),
61 DECL_BLEND_FACTOR(ONE_MINUS_SRC_COLOR),
62 DECL_BLEND_FACTOR(SRC_ALPHA),
63 DECL_BLEND_FACTOR(ONE_MINUS_SRC_ALPHA),
64 DECL_BLEND_FACTOR(DST_ALPHA),
65 DECL_BLEND_FACTOR(ONE_MINUS_DST_ALPHA),
66 DECL_BLEND_FACTOR(DST_COLOR),
67 DECL_BLEND_FACTOR(ONE_MINUS_DST_COLOR),
68 DECL_BLEND_FACTOR(SRC_ALPHA_SATURATE),
69 DECL_BLEND_FACTOR(CONSTANT_COLOR),
70 DECL_BLEND_FACTOR(ONE_MINUS_CONSTANT_COLOR),
71 DECL_BLEND_FACTOR(CONSTANT_ALPHA),
72 DECL_BLEND_FACTOR(ONE_MINUS_CONSTANT_ALPHA),
73 #undef DECL_BLEND_FACTOR
76 Type InterpretBlendFactor(const std::string_view& str, uint8_t item)
79 auto iFind = BLEND_FACTORS.find(str);
80 if(iFind != BLEND_FACTORS.end())
82 value = iFind->second << (BLEND_FACTOR_BASE_SHIFT + BLEND_FACTOR_ITEM_BITS * item);
87 std::map<std::string_view, Type> BUFFER_MODES{
88 #define DECL_BUFFER_MODE(x) {#x, BufferMode::x}
89 DECL_BUFFER_MODE(NONE),
90 DECL_BUFFER_MODE(AUTO),
91 DECL_BUFFER_MODE(COLOR),
92 DECL_BUFFER_MODE(STENCIL),
93 DECL_BUFFER_MODE(COLOR_STENCIL),
96 Type InterpretBufferMode(const std::string_view& str)
99 auto iFind = BUFFER_MODES.find(str);
100 if(iFind != BUFFER_MODES.end())
102 value = iFind->second << BUFFER_MODE_SHIFT;
107 std::map<std::string_view, Type (*)(const std::string_view&)> RENDERER_STATE_PROCESSORS{
108 {"DEPTH_WRITE", [](const std::string_view&) -> Type { return DEPTH_WRITE; }},
109 {"DEPTH_TEST", [](const std::string_view&) -> Type { return DEPTH_TEST; }},
110 {"CULL_FRONT", [](const std::string_view&) -> Type { return CULL_FRONT; }},
111 {"CULL_BACK", [](const std::string_view&) -> Type { return CULL_BACK; }},
112 {"ALPHA_BLEND", [](const std::string_view&) -> Type { return ALPHA_BLEND; }},
113 {"DEPTH_FUNC", [](const std::string_view& arg) -> Type {
114 Type value = (arg[0] == ':') ? (InterpretComparison(std::string_view(arg.data() + 1, arg.size() - 1)) << DEPTH_FUNCTION_SHIFT) : 0x0;
117 {"BLEND_SRC_RGB", [](const std::string_view& arg) -> Type {
118 Type value = (arg[0] == ':') ? InterpretBlendFactor(std::string_view(arg.data() + 1, arg.size() - 1), 0) : 0x0;
121 {"BLEND_DST_RGB", [](const std::string_view& arg) -> Type {
122 Type value = (arg[0] == ':') ? InterpretBlendFactor(std::string_view(arg.data() + 1, arg.size() - 1), 1) : 0x0;
125 {"BLEND_SRC_ALPHA", [](const std::string_view& arg) -> Type {
126 Type value = (arg[0] == ':') ? InterpretBlendFactor(std::string_view(arg.data() + 1, arg.size() - 1), 2) : 0x0;
129 {"BLEND_DST_ALPHA", [](const std::string_view& arg) -> Type {
130 Type value = (arg[0] == ':') ? InterpretBlendFactor(std::string_view(arg.data() + 1, arg.size() - 1), 3) : 0x0;
133 {"BUFFER_MODE", [](const std::string_view& arg) -> Type {
134 Type value = (arg[0] == ':') ? InterpretBufferMode(std::string_view(arg.data() + 1, arg.size() - 1)) : 0x0;
141 Type Parse(const char* string, size_t length, StringCallback onError)
145 length = strlen(string);
149 auto iEnd = string + length;
150 while(string != iEnd)
152 auto iNextToken = std::find(string, iEnd, '|');
153 auto iColon = std::find(string, iNextToken, ':');
154 auto i = RENDERER_STATE_PROCESSORS.find(std::string_view(string, iColon - string));
155 if(i != RENDERER_STATE_PROCESSORS.end() && size_t(std::distance(string, iNextToken)) >= i->first.size())
157 value |= i->second(std::string_view(string + i->first.size(), iNextToken - iColon));
161 onError("Not a valid RendererState: " + std::string(string, iNextToken));
164 string = iNextToken + (iNextToken != iEnd);
170 } // namespace RendererState
171 } // namespace Loader
172 } // namespace Scene3D