3 Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
4 Copyright (C) 2013 Kahrl <kahrl@gmx.net>
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU Lesser General Public License as published by
8 the Free Software Foundation; either version 2.1 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public License along
17 with this program; if not, write to the Free Software Foundation, Inc.,
18 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
24 #include <IMaterialRendererServices.h>
25 #include "irrlichttypes_extrabloated.h"
32 shader.{h,cpp}: Shader handling stuff.
36 Gets the path to a shader by first checking if the file
37 name_of_shader/filename
38 exists in shader_path and if not, using the data path.
40 If not found, returns "".
42 Utilizes a thread-safe cache.
44 std::string getShaderPath(const std::string &name_of_shader,
45 const std::string &filename);
49 video::E_MATERIAL_TYPE base_material;
50 video::E_MATERIAL_TYPE material;
55 ShaderInfo(): name(""), base_material(video::EMT_SOLID),
56 material(video::EMT_SOLID),
57 drawtype(0), material_type(0) {}
58 virtual ~ShaderInfo() {}
62 Setter of constants for shaders
65 namespace irr { namespace video {
66 class IMaterialRendererServices;
70 class IShaderConstantSetter {
72 virtual ~IShaderConstantSetter(){};
73 virtual void onSetConstants(video::IMaterialRendererServices *services,
74 bool is_highlevel) = 0;
78 class IShaderConstantSetterFactory {
80 virtual ~IShaderConstantSetterFactory() {};
81 virtual IShaderConstantSetter* create() = 0;
85 template <typename T, std::size_t count=1>
86 class CachedShaderSetting {
92 CachedShaderSetting(const char *name, bool is_pixel) :
93 m_name(name), has_been_set(false), is_pixel(is_pixel)
96 void set(const T value[count], video::IMaterialRendererServices *services)
98 if (has_been_set && std::equal(m_sent, m_sent + count, value))
101 services->setPixelShaderConstant(m_name, value, count);
103 services->setVertexShaderConstant(m_name, value, count);
104 std::copy(value, value + count, m_sent);
109 template <typename T, std::size_t count = 1>
110 class CachedPixelShaderSetting : public CachedShaderSetting<T, count> {
112 CachedPixelShaderSetting(const char *name) :
113 CachedShaderSetting<T, count>(name, true){}
116 template <typename T, std::size_t count = 1>
117 class CachedVertexShaderSetting : public CachedShaderSetting<T, count> {
119 CachedVertexShaderSetting(const char *name) :
120 CachedShaderSetting<T, count>(name, false){}
125 ShaderSource creates and caches shaders.
128 class IShaderSource {
131 virtual ~IShaderSource(){}
132 virtual u32 getShaderIdDirect(const std::string &name,
133 const u8 material_type, const u8 drawtype){return 0;}
134 virtual ShaderInfo getShaderInfo(u32 id){return ShaderInfo();}
135 virtual u32 getShader(const std::string &name,
136 const u8 material_type, const u8 drawtype){return 0;}
139 class IWritableShaderSource : public IShaderSource {
141 IWritableShaderSource(){}
142 virtual ~IWritableShaderSource(){}
143 virtual u32 getShaderIdDirect(const std::string &name,
144 const u8 material_type, const u8 drawtype){return 0;}
145 virtual ShaderInfo getShaderInfo(u32 id){return ShaderInfo();}
146 virtual u32 getShader(const std::string &name,
147 const u8 material_type, const u8 drawtype){return 0;}
149 virtual void processQueue()=0;
150 virtual void insertSourceShader(const std::string &name_of_shader,
151 const std::string &filename, const std::string &program)=0;
152 virtual void rebuildShaders()=0;
153 virtual void addShaderConstantSetterFactory(IShaderConstantSetterFactory *setter) = 0;
156 IWritableShaderSource* createShaderSource(IrrlichtDevice *device);
158 void dumpShaderProgram(std::ostream &output_stream,
159 const std::string &program_type, const std::string &program);