2 * Copyright (c) 2021 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-scene-loader/public-api/parse-renderer-state.h"
20 #include "dali/devel-api/common/map-wrapper.h"
26 namespace RendererState
30 std::map<std::string_view, Type> COMPARISONS{
31 #define DECL_COMPARISON(x) {#x, Comparison::x}
32 DECL_COMPARISON(NEVER),
33 DECL_COMPARISON(ALWAYS),
34 DECL_COMPARISON(LESS),
35 DECL_COMPARISON(GREATER),
36 DECL_COMPARISON(EQUAL),
37 DECL_COMPARISON(NOT_EQUAL),
38 DECL_COMPARISON(LESS_EQUAL),
39 DECL_COMPARISON(GREATER_EQUAL),
40 #undef DECL_COMPARISON
43 Type InterpretComparison(const std::string_view& str)
46 auto iFind = COMPARISONS.find(str);
47 if(iFind != COMPARISONS.end())
49 value = iFind->second;
54 std::map<std::string_view, Type> BLEND_FACTORS{
55 #define DECL_BLEND_FACTOR(x) {#x, SceneLoader::BlendFactor::x}
56 DECL_BLEND_FACTOR(ZERO),
57 DECL_BLEND_FACTOR(ONE),
58 DECL_BLEND_FACTOR(SRC_COLOR),
59 DECL_BLEND_FACTOR(ONE_MINUS_SRC_COLOR),
60 DECL_BLEND_FACTOR(SRC_ALPHA),
61 DECL_BLEND_FACTOR(ONE_MINUS_SRC_ALPHA),
62 DECL_BLEND_FACTOR(DST_ALPHA),
63 DECL_BLEND_FACTOR(ONE_MINUS_DST_ALPHA),
64 DECL_BLEND_FACTOR(DST_COLOR),
65 DECL_BLEND_FACTOR(ONE_MINUS_DST_COLOR),
66 DECL_BLEND_FACTOR(SRC_ALPHA_SATURATE),
67 DECL_BLEND_FACTOR(CONSTANT_COLOR),
68 DECL_BLEND_FACTOR(ONE_MINUS_CONSTANT_COLOR),
69 DECL_BLEND_FACTOR(CONSTANT_ALPHA),
70 DECL_BLEND_FACTOR(ONE_MINUS_CONSTANT_ALPHA),
71 #undef DECL_BLEND_FACTOR
74 Type InterpretBlendFactor(const std::string_view& str, uint8_t item)
77 auto iFind = BLEND_FACTORS.find(str);
78 if(iFind != BLEND_FACTORS.end())
80 value = iFind->second << (BLEND_FACTOR_BASE_SHIFT + BLEND_FACTOR_ITEM_BITS * item);
85 std::map<std::string_view, Type> BUFFER_MODES{
86 #define DECL_BUFFER_MODE(x) {#x, BufferMode::x}
87 DECL_BUFFER_MODE(NONE),
88 DECL_BUFFER_MODE(AUTO),
89 DECL_BUFFER_MODE(COLOR),
90 DECL_BUFFER_MODE(STENCIL),
91 DECL_BUFFER_MODE(COLOR_STENCIL),
94 Type InterpretBufferMode(const std::string_view& str)
97 auto iFind = BUFFER_MODES.find(str);
98 if(iFind != BUFFER_MODES.end())
100 value = iFind->second << BUFFER_MODE_SHIFT;
105 std::map<std::string_view, Type (*)(const std::string_view&)> RENDERER_STATE_PROCESSORS{
106 {"DEPTH_WRITE", [](const std::string_view&) -> Type { return DEPTH_WRITE; }},
107 {"DEPTH_TEST", [](const std::string_view&) -> Type { return DEPTH_TEST; }},
108 {"CULL_FRONT", [](const std::string_view&) -> Type { return CULL_FRONT; }},
109 {"CULL_BACK", [](const std::string_view&) -> Type { return CULL_BACK; }},
110 {"ALPHA_BLEND", [](const std::string_view&) -> Type { return ALPHA_BLEND; }},
111 {"DEPTH_FUNC", [](const std::string_view& arg) -> Type {
112 Type value = (arg[0] == ':') ? (InterpretComparison(std::string_view(arg.data() + 1, arg.size() - 1)) << DEPTH_FUNCTION_SHIFT) : 0x0;
115 {"BLEND_SRC_RGB", [](const std::string_view& arg) -> Type {
116 Type value = (arg[0] == ':') ? InterpretBlendFactor(std::string_view(arg.data() + 1, arg.size() - 1), 0) : 0x0;
119 {"BLEND_DST_RGB", [](const std::string_view& arg) -> Type {
120 Type value = (arg[0] == ':') ? InterpretBlendFactor(std::string_view(arg.data() + 1, arg.size() - 1), 1) : 0x0;
123 {"BLEND_SRC_ALPHA", [](const std::string_view& arg) -> Type {
124 Type value = (arg[0] == ':') ? InterpretBlendFactor(std::string_view(arg.data() + 1, arg.size() - 1), 2) : 0x0;
127 {"BLEND_DST_ALPHA", [](const std::string_view& arg) -> Type {
128 Type value = (arg[0] == ':') ? InterpretBlendFactor(std::string_view(arg.data() + 1, arg.size() - 1), 3) : 0x0;
131 {"BUFFER_MODE", [](const std::string_view& arg) -> Type {
132 Type value = (arg[0] == ':') ? InterpretBufferMode(std::string_view(arg.data() + 1, arg.size() - 1)) : 0x0;
139 Type Parse(const char* string, size_t length, StringCallback onError)
143 length = strlen(string);
147 auto iEnd = string + length;
148 while(string != iEnd)
150 auto iNextToken = std::find(string, iEnd, '|');
151 auto iColon = std::find(string, iNextToken, ':');
152 auto i = RENDERER_STATE_PROCESSORS.find(std::string_view(string, iColon - string));
153 if(i != RENDERER_STATE_PROCESSORS.end() && size_t(std::distance(string, iNextToken)) >= i->first.size())
155 value |= i->second(std::string_view(string + i->first.size(), iNextToken - iColon));
159 onError("Not a valid RendererState: " + std::string(string, iNextToken));
162 string = iNextToken + (iNextToken != iEnd);
168 } // namespace RendererState
169 } // namespace SceneLoader