2 * Copyright (c) 2023 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.
19 #include <dali-scene3d/public-api/loader/parse-renderer-state.h>
22 #include <dali/devel-api/common/map-wrapper.h>
25 namespace Dali::Scene3D::Loader
27 namespace RendererState
31 std::map<std::string_view, Type> COMPARISONS{
32 #define DECL_COMPARISON(x) {#x, Comparison::x}
33 DECL_COMPARISON(NEVER),
34 DECL_COMPARISON(ALWAYS),
35 DECL_COMPARISON(LESS),
36 DECL_COMPARISON(GREATER),
37 DECL_COMPARISON(EQUAL),
38 DECL_COMPARISON(NOT_EQUAL),
39 DECL_COMPARISON(LESS_EQUAL),
40 DECL_COMPARISON(GREATER_EQUAL),
41 #undef DECL_COMPARISON
44 Type InterpretComparison(const std::string_view& str)
47 auto iFind = COMPARISONS.find(str);
48 if(iFind != COMPARISONS.end())
50 value = iFind->second;
55 std::map<std::string_view, Type> BLEND_FACTORS{
56 #define DECL_BLEND_FACTOR(x) {#x, Dali::Scene3D::Loader::BlendFactor::x}
57 DECL_BLEND_FACTOR(ZERO),
58 DECL_BLEND_FACTOR(ONE),
59 DECL_BLEND_FACTOR(SRC_COLOR),
60 DECL_BLEND_FACTOR(ONE_MINUS_SRC_COLOR),
61 DECL_BLEND_FACTOR(SRC_ALPHA),
62 DECL_BLEND_FACTOR(ONE_MINUS_SRC_ALPHA),
63 DECL_BLEND_FACTOR(DST_ALPHA),
64 DECL_BLEND_FACTOR(ONE_MINUS_DST_ALPHA),
65 DECL_BLEND_FACTOR(DST_COLOR),
66 DECL_BLEND_FACTOR(ONE_MINUS_DST_COLOR),
67 DECL_BLEND_FACTOR(SRC_ALPHA_SATURATE),
68 DECL_BLEND_FACTOR(CONSTANT_COLOR),
69 DECL_BLEND_FACTOR(ONE_MINUS_CONSTANT_COLOR),
70 DECL_BLEND_FACTOR(CONSTANT_ALPHA),
71 DECL_BLEND_FACTOR(ONE_MINUS_CONSTANT_ALPHA),
72 #undef DECL_BLEND_FACTOR
75 Type InterpretBlendFactor(const std::string_view& str, uint8_t item)
78 auto iFind = BLEND_FACTORS.find(str);
79 if(iFind != BLEND_FACTORS.end())
81 value = iFind->second << (BLEND_FACTOR_BASE_SHIFT + BLEND_FACTOR_ITEM_BITS * item);
86 std::map<std::string_view, Type> BUFFER_MODES{
87 #define DECL_BUFFER_MODE(x) {#x, BufferMode::x}
88 DECL_BUFFER_MODE(NONE),
89 DECL_BUFFER_MODE(AUTO),
90 DECL_BUFFER_MODE(COLOR),
91 DECL_BUFFER_MODE(STENCIL),
92 DECL_BUFFER_MODE(COLOR_STENCIL),
95 Type InterpretBufferMode(const std::string_view& str)
98 auto iFind = BUFFER_MODES.find(str);
99 if(iFind != BUFFER_MODES.end())
101 value = iFind->second << BUFFER_MODE_SHIFT;
106 std::map<std::string_view, Type (*)(const std::string_view&)> RENDERER_STATE_PROCESSORS{
107 {"DEPTH_WRITE", [](const std::string_view&) -> Type { return DEPTH_WRITE; }},
108 {"DEPTH_TEST", [](const std::string_view&) -> Type { return DEPTH_TEST; }},
109 {"CULL_FRONT", [](const std::string_view&) -> Type { return CULL_FRONT; }},
110 {"CULL_BACK", [](const std::string_view&) -> Type { return CULL_BACK; }},
111 {"ALPHA_BLEND", [](const std::string_view&) -> Type { return ALPHA_BLEND; }},
112 {"DEPTH_FUNC", [](const std::string_view& arg) -> Type {
113 Type value = (arg[0] == ':') ? (InterpretComparison(std::string_view(arg.data() + 1, arg.size() - 1)) << DEPTH_FUNCTION_SHIFT) : 0x0;
116 {"BLEND_SRC_RGB", [](const std::string_view& arg) -> Type {
117 Type value = (arg[0] == ':') ? InterpretBlendFactor(std::string_view(arg.data() + 1, arg.size() - 1), 0) : 0x0;
120 {"BLEND_DST_RGB", [](const std::string_view& arg) -> Type {
121 Type value = (arg[0] == ':') ? InterpretBlendFactor(std::string_view(arg.data() + 1, arg.size() - 1), 1) : 0x0;
124 {"BLEND_SRC_ALPHA", [](const std::string_view& arg) -> Type {
125 Type value = (arg[0] == ':') ? InterpretBlendFactor(std::string_view(arg.data() + 1, arg.size() - 1), 2) : 0x0;
128 {"BLEND_DST_ALPHA", [](const std::string_view& arg) -> Type {
129 Type value = (arg[0] == ':') ? InterpretBlendFactor(std::string_view(arg.data() + 1, arg.size() - 1), 3) : 0x0;
132 {"BUFFER_MODE", [](const std::string_view& arg) -> Type {
133 Type value = (arg[0] == ':') ? InterpretBufferMode(std::string_view(arg.data() + 1, arg.size() - 1)) : 0x0;
140 Type Parse(const char* string, size_t length, StringCallback onError)
144 length = strlen(string);
148 auto iEnd = string + length;
149 while(string != iEnd)
151 auto iNextToken = std::find(string, iEnd, '|');
152 auto iColon = std::find(string, iNextToken, ':');
153 auto i = RENDERER_STATE_PROCESSORS.find(std::string_view(string, iColon - string));
154 if(i != RENDERER_STATE_PROCESSORS.end() && size_t(std::distance(string, iNextToken)) >= i->first.size())
156 value |= i->second(std::string_view(string + i->first.size(), iNextToken - iColon));
160 onError("Not a valid RendererState: " + std::string(string, iNextToken));
163 string = iNextToken + (iNextToken != iEnd);
169 } // namespace RendererState
170 } // namespace Dali::Scene3D::Loader