Get neighbor from same map block if possible in ABMHandler (#4998)

[dragonfireclient.git] / src / shader.h

diff --git a/src/shader.h b/src/shader.h
index c39602cc0fe2b0d2254ac2bcc25b5541321a5294..766871f02405fc0ae37afe99fafd1f92e9a19622 100644 (file)
--- a/src/shader.h
+++ b/src/shader.h
@@ -1,19 +1,19 @@
 /*
 Minetest
-Copyright (C) 2012 celeron55, Perttu Ahola <celeron55@gmail.com>
-Copyright (C) 2012 Kahrl <kahrl@gmx.net>
+Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
+Copyright (C) 2013 Kahrl <kahrl@gmx.net>
 
 This program is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2 of the License, or
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation; either version 2.1 of the License, or
 (at your option) any later version.
 
 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-GNU General Public License for more details.
+GNU Lesser General Public License for more details.
 
-You should have received a copy of the GNU General Public License along
+You should have received a copy of the GNU Lesser General Public License along
 with this program; if not, write to the Free Software Foundation, Inc.,
 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */
@@ -21,6 +21,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #ifndef SHADER_HEADER
 #define SHADER_HEADER
 
+#include <IMaterialRendererServices.h>
 #include "irrlichttypes_extrabloated.h"
 #include "threads.h"
 #include <string>
@@ -43,12 +44,18 @@ class IGameDef;
 std::string getShaderPath(const std::string &name_of_shader,
                const std::string &filename);
 
-struct ShaderInfo
-{
+struct ShaderInfo {
        std::string name;
+       video::E_MATERIAL_TYPE base_material;
        video::E_MATERIAL_TYPE material;
-
-       ShaderInfo(): name(""), material(video::EMT_SOLID) {}
+       u8 drawtype;
+       u8 material_type;
+       s32 user_data;
+
+       ShaderInfo(): name(""), base_material(video::EMT_SOLID),
+               material(video::EMT_SOLID),
+               drawtype(0), material_type(0) {}
+       virtual ~ShaderInfo() {}
 };
 
 /*
@@ -59,48 +66,96 @@ namespace irr { namespace video {
        class IMaterialRendererServices;
 } }
 
-class IShaderConstantSetter
-{
+
+class IShaderConstantSetter {
 public:
        virtual ~IShaderConstantSetter(){};
        virtual void onSetConstants(video::IMaterialRendererServices *services,
                        bool is_highlevel) = 0;
 };
 
+
+class IShaderConstantSetterFactory {
+public:
+       virtual ~IShaderConstantSetterFactory() {};
+       virtual IShaderConstantSetter* create() = 0;
+};
+
+
+template <typename T, std::size_t count=1>
+class CachedShaderSetting {
+       const char *m_name;
+       T m_sent[count];
+       bool has_been_set;
+       bool is_pixel;
+protected:
+       CachedShaderSetting(const char *name, bool is_pixel) :
+               m_name(name), has_been_set(false), is_pixel(is_pixel)
+       {}
+public:
+       void set(const T value[count], video::IMaterialRendererServices *services)
+       {
+               if (has_been_set && std::equal(m_sent, m_sent + count, value))
+                       return;
+               if (is_pixel)
+                       services->setPixelShaderConstant(m_name, value, count);
+               else
+                       services->setVertexShaderConstant(m_name, value, count);
+               std::copy(value, value + count, m_sent);
+               has_been_set = true;
+       }
+};
+
+template <typename T, std::size_t count = 1>
+class CachedPixelShaderSetting : public CachedShaderSetting<T, count> {
+public:
+       CachedPixelShaderSetting(const char *name) :
+               CachedShaderSetting<T, count>(name, true){}
+};
+
+template <typename T, std::size_t count = 1>
+class CachedVertexShaderSetting : public CachedShaderSetting<T, count> {
+public:
+       CachedVertexShaderSetting(const char *name) :
+               CachedShaderSetting<T, count>(name, false){}
+};
+
+
 /*
        ShaderSource creates and caches shaders.
 */
 
-class IShaderSource
-{
+class IShaderSource {
 public:
        IShaderSource(){}
        virtual ~IShaderSource(){}
-       virtual u32 getShaderId(const std::string &name){return 0;}
-       virtual u32 getShaderIdDirect(const std::string &name){return 0;}
-       virtual std::string getShaderName(u32 id){return "";}
-       virtual ShaderInfo getShader(u32 id){return ShaderInfo();}
-       virtual ShaderInfo getShader(const std::string &name){return ShaderInfo();}
+       virtual u32 getShaderIdDirect(const std::string &name,
+               const u8 material_type, const u8 drawtype){return 0;}
+       virtual ShaderInfo getShaderInfo(u32 id){return ShaderInfo();}
+       virtual u32 getShader(const std::string &name,
+               const u8 material_type, const u8 drawtype){return 0;}
 };
 
-class IWritableShaderSource : public IShaderSource
-{
+class IWritableShaderSource : public IShaderSource {
 public:
        IWritableShaderSource(){}
        virtual ~IWritableShaderSource(){}
-       virtual u32 getShaderId(const std::string &name){return 0;}
-       virtual u32 getShaderIdDirect(const std::string &name){return 0;}
-       virtual std::string getShaderName(u32 id){return "";}
-       virtual ShaderInfo getShader(u32 id){return ShaderInfo();}
-       virtual ShaderInfo getShader(const std::string &name){return ShaderInfo();}
+       virtual u32 getShaderIdDirect(const std::string &name,
+               const u8 material_type, const u8 drawtype){return 0;}
+       virtual ShaderInfo getShaderInfo(u32 id){return ShaderInfo();}
+       virtual u32 getShader(const std::string &name,
+               const u8 material_type, const u8 drawtype){return 0;}
 
        virtual void processQueue()=0;
        virtual void insertSourceShader(const std::string &name_of_shader,
                const std::string &filename, const std::string &program)=0;
        virtual void rebuildShaders()=0;
-       virtual void addGlobalConstantSetter(IShaderConstantSetter *setter)=0;
+       virtual void addShaderConstantSetterFactory(IShaderConstantSetterFactory *setter) = 0;
 };
 
 IWritableShaderSource* createShaderSource(IrrlichtDevice *device);
 
+void dumpShaderProgram(std::ostream &output_stream,
+       const std::string &program_type, const std::string &program);
+
 #endif