1/**
2 * Copyright (c) 2006-2023 LOVE Development Team
3 *
4 * This software is provided 'as-is', without any express or implied
5 * warranty. In no event will the authors be held liable for any damages
6 * arising from the use of this software.
7 *
8 * Permission is granted to anyone to use this software for any purpose,
9 * including commercial applications, and to alter it and redistribute it
10 * freely, subject to the following restrictions:
11 *
12 * 1. The origin of this software must not be misrepresented; you must not
13 * claim that you wrote the original software. If you use this software
14 * in a product, an acknowledgment in the product documentation would be
15 * appreciated but is not required.
16 * 2. Altered source versions must be plainly marked as such, and must not be
17 * misrepresented as being the original software.
18 * 3. This notice may not be removed or altered from any source distribution.
19 **/
20
21#pragma once
22
23#include "common/Object.h"
24#include "common/StringMap.h"
25#include "Volatile.h"
26#include "Resource.h"
27
28#include <stddef.h>
29#include <string>
30
31namespace glslang
32{
33class TShader;
34}
35
36namespace love
37{
38namespace graphics
39{
40
41class Graphics;
42
43class ShaderStage : public love::Object, public Volatile, public Resource
44{
45public:
46
47 enum StageType
48 {
49 STAGE_VERTEX,
50 STAGE_PIXEL,
51 STAGE_MAX_ENUM
52 };
53
54 ShaderStage(Graphics *gfx, StageType stage, const std::string &glsl, bool gles, const std::string &cachekey);
55 virtual ~ShaderStage();
56
57 StageType getStageType() const { return stageType; }
58 const std::string &getSource() const { return source; }
59 const std::string &getWarnings() const { return warnings; }
60 glslang::TShader *getGLSLangShader() const { return glslangShader; }
61
62 static bool getConstant(const char *in, StageType &out);
63 static bool getConstant(StageType in, const char *&out);
64
65protected:
66
67 std::string warnings;
68
69private:
70
71 StageType stageType;
72 std::string source;
73 std::string cacheKey;
74 glslang::TShader *glslangShader;
75
76 static StringMap<StageType, STAGE_MAX_ENUM>::Entry stageNameEntries[];
77 static StringMap<StageType, STAGE_MAX_ENUM> stageNames;
78
79}; // ShaderStage
80
81class ShaderStageForValidation final : public ShaderStage
82{
83public:
84
85 ShaderStageForValidation(Graphics *gfx, StageType stage, const std::string &glsl, bool gles)
86 : ShaderStage(gfx, stage, glsl, gles, "")
87 {}
88
89 virtual ~ShaderStageForValidation() {}
90
91 ptrdiff_t getHandle() const override { return 0; }
92 bool loadVolatile() override { return true; }
93 void unloadVolatile() override { }
94
95}; // ShaderStageForValidation
96
97} // graphics
98} // love
99