mirror of
https://github.com/Almamu/linux-wallpaperengine.git
synced 2025-07-14 21:32:23 +08:00
596 lines
20 KiB
C++
596 lines
20 KiB
C++
#include <irrlicht/irrlicht.h>
|
|
#include <iostream>
|
|
#include <fstream>
|
|
#include <string>
|
|
|
|
// filesystem
|
|
#include <WallpaperEngine/FileSystem/FileSystem.h>
|
|
|
|
// shader compiler
|
|
#include <WallpaperEngine/Render/Shaders/Compiler.h>
|
|
#include <WallpaperEngine/Core/Core.h>
|
|
|
|
#include "WallpaperEngine/Render/Shaders/Parameters/CShaderParameter.h"
|
|
#include "WallpaperEngine/Render/Shaders/Parameters/CShaderParameterFloat.h"
|
|
#include "WallpaperEngine/Render/Shaders/Parameters/CShaderParameterInteger.h"
|
|
#include "WallpaperEngine/Render/Shaders/Parameters/CShaderParameterVector2.h"
|
|
#include "WallpaperEngine/Render/Shaders/Parameters/CShaderParameterVector3.h"
|
|
#include "WallpaperEngine/Render/Shaders/Parameters/CShaderParameterVector4.h"
|
|
|
|
namespace WallpaperEngine::Render::Shaders
|
|
{
|
|
Compiler::Compiler (Irrlicht::CContext* context, irr::io::path& file, Type type, const std::map<std::string, int>& combos, bool recursive) :
|
|
m_combos (combos),
|
|
m_recursive (recursive),
|
|
m_type (type),
|
|
m_file (file),
|
|
m_error (""),
|
|
m_errorInfo (""),
|
|
m_context (context)
|
|
{
|
|
// begin with an space so it gets ignored properly on parse
|
|
if (this->m_recursive == false)
|
|
{
|
|
// compatibility layer for OpenGL shaders
|
|
this->m_content = "#version 120\n"
|
|
"#define highp\n"
|
|
"#define mediump\n"
|
|
"#define lowp\n"
|
|
"#define mul(x, y) (y * x)\n"
|
|
"#define frac fract\n"
|
|
"#define CAST2(x) (vec2(x))\n"
|
|
"#define CAST3(x) (vec3(x))\n"
|
|
"#define CAST4(x) (vec4(x))\n"
|
|
"#define CAST3X3(x) (mat3(x))\n"
|
|
"#define saturate(x) (clamp(x, 0.0, 1.0))\n"
|
|
"#define texSample2D texture2D\n"
|
|
"#define texSample2DLod texture2DLod\n"
|
|
"#define texture2DLod texture2D\n"
|
|
"#define atan2 atan\n"
|
|
"#define ddx dFdx\n"
|
|
"#define ddy(x) dFdy(-(x))\n"
|
|
"#define GLSL 1\n\n";
|
|
|
|
auto cur = this->m_combos.begin ();
|
|
auto end = this->m_combos.end ();
|
|
|
|
for (; cur != end; cur ++)
|
|
{
|
|
this->m_content += "#define " + (*cur).first + " " + std::to_string ((*cur).second) + "\n";
|
|
}
|
|
}
|
|
else
|
|
{
|
|
this->m_content = "";
|
|
}
|
|
|
|
this->m_content.append (WallpaperEngine::FileSystem::loadFullFile (file));
|
|
}
|
|
|
|
bool Compiler::peekString(std::string str, std::string::const_iterator& it)
|
|
{
|
|
std::string::const_iterator check = str.begin();
|
|
std::string::const_iterator cur = it;
|
|
|
|
while (cur != this->m_content.end () && check != str.end ())
|
|
{
|
|
if (*cur != *check) return false;
|
|
|
|
cur ++; check ++;
|
|
}
|
|
|
|
if (cur == this->m_content.end ())
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if (check != str.end ())
|
|
{
|
|
return false;
|
|
}
|
|
|
|
it = cur;
|
|
|
|
return true;
|
|
}
|
|
|
|
bool Compiler::expectSemicolon (std::string::const_iterator& it)
|
|
{
|
|
if (*it != ';')
|
|
{
|
|
this->m_error = true;
|
|
this->m_errorInfo = "Expected semicolon but got " + *it;
|
|
return false;
|
|
}
|
|
|
|
it ++;
|
|
|
|
return true;
|
|
}
|
|
|
|
void Compiler::ignoreSpaces(std::string::const_iterator &it)
|
|
{
|
|
while (it != this->m_content.end() && (*it == ' ' || *it == '\t')) it ++;
|
|
}
|
|
|
|
void Compiler::ignoreUpToNextLineFeed (std::string::const_iterator& it)
|
|
{
|
|
while (it != this->m_content.end() && *it != '\n') it ++;
|
|
}
|
|
|
|
void Compiler::ignoreUpToBlockCommentEnd (std::string::const_iterator& it)
|
|
{
|
|
while (it != this->m_content.end() && this->peekString ("*/", it) == false) it ++;
|
|
}
|
|
|
|
std::string Compiler::extractType (std::string::const_iterator& it)
|
|
{
|
|
auto cur = sTypes.begin ();
|
|
auto end = sTypes.end ();
|
|
|
|
while (cur != end)
|
|
{
|
|
if (this->peekString (*cur, it) == true)
|
|
{
|
|
return *cur;
|
|
}
|
|
|
|
cur ++;
|
|
}
|
|
|
|
this->m_error = true;
|
|
this->m_errorInfo = "Expected type";
|
|
return "";
|
|
}
|
|
|
|
std::string Compiler::extractName (std::string::const_iterator& it)
|
|
{
|
|
std::string::const_iterator cur = it;
|
|
std::string::const_iterator begin = cur;
|
|
|
|
// first character has to be a valid alphabetic characer
|
|
if (this->isChar (cur) == false && *cur != '_')
|
|
{
|
|
this->m_error = true;
|
|
this->m_errorInfo = "Expected name doesn't start with a valid character";
|
|
return "";
|
|
}
|
|
|
|
cur ++;
|
|
|
|
while (cur != this->m_content.end () && (this->isChar (cur) == true || *cur == '_' || this->isNumeric (cur) == true)) cur ++;
|
|
|
|
it = cur;
|
|
|
|
return std::string (begin, cur);
|
|
}
|
|
|
|
bool Compiler::isChar (std::string::const_iterator& it)
|
|
{
|
|
return ((*it) >= 'A' && (*it) <= 'Z') || ((*it) >= 'a' && (*it) <= 'z');
|
|
}
|
|
|
|
bool Compiler::isNumeric (std::string::const_iterator& it)
|
|
{
|
|
return (*it) >= '0' && (*it) <= '9';
|
|
}
|
|
|
|
std::string Compiler::extractQuotedValue(std::string::const_iterator& it)
|
|
{
|
|
std::string::const_iterator cur = it;
|
|
|
|
if (*cur != '"')
|
|
{
|
|
m_error = true;
|
|
m_errorInfo = "Expected opening \" but got " + (*cur);
|
|
return "";
|
|
}
|
|
|
|
cur ++;
|
|
|
|
while (cur != this->m_content.end () && *cur != '\n' && *cur != '"') cur ++;
|
|
|
|
if (cur == this->m_content.end ())
|
|
{
|
|
m_error = true;
|
|
m_errorInfo = "Expected closing \" not found";
|
|
it = cur;
|
|
return "";
|
|
}
|
|
|
|
std::string filename = std::string (++it, cur);
|
|
|
|
it = ++cur;
|
|
|
|
return filename;
|
|
}
|
|
|
|
std::string Compiler::lookupShaderFile (std::string filename)
|
|
{
|
|
// get file information
|
|
irr::io::path shader = this->m_context->resolveIncludeShader (filename);
|
|
|
|
if (shader == "")
|
|
{
|
|
this->m_error = true;
|
|
this->m_errorInfo = "Cannot find file " + filename + " to include";
|
|
return "";
|
|
}
|
|
|
|
// now compile the new shader
|
|
// do not include the default header (as it's already included in the parent)
|
|
Compiler loader (this->m_context, shader, this->m_type, this->m_combos, true);
|
|
|
|
return loader.precompile ();
|
|
}
|
|
|
|
std::string Compiler::lookupReplaceSymbol (std::string symbol)
|
|
{
|
|
auto cur = sVariableReplacement.begin ();
|
|
auto end = sVariableReplacement.end ();
|
|
|
|
while (cur != end)
|
|
{
|
|
if (cur->first == symbol)
|
|
{
|
|
return cur->second;
|
|
}
|
|
|
|
cur ++;
|
|
}
|
|
|
|
// if there is no replacement, return the original
|
|
return symbol;
|
|
}
|
|
|
|
std::string Compiler::precompile()
|
|
{
|
|
#define BREAK_IF_ERROR if (this->m_error == true) { throw std::runtime_error ("ERROR PRE-COMPILING SHADER" + this->m_errorInfo); }
|
|
// parse the shader and find #includes and such things and translate them to the correct name
|
|
// also remove any #version definition to prevent errors
|
|
std::string::const_iterator it = this->m_content.begin ();
|
|
|
|
// reset error indicator
|
|
this->m_error = false;
|
|
this->m_errorInfo = "";
|
|
|
|
// search preprocessor macros and parse them
|
|
while (it != this->m_content.end () && this->m_error == false)
|
|
{
|
|
if (*it == ' ' || *it == '\t' || *it == '\n' || *it == '\r' || *it == '\0' || *it == '{' || *it == '}' || *it == '[' || *it == ']' || *it == '.')
|
|
{
|
|
this->m_compiledContent += *it;
|
|
it ++;
|
|
}
|
|
else if (*it == '#')
|
|
{
|
|
if (this->peekString ("#include", it) == true)
|
|
{
|
|
std::string filename = "";
|
|
|
|
// ignore whitespaces
|
|
this->ignoreSpaces (it); BREAK_IF_ERROR
|
|
// extract value between quotes
|
|
filename = this->extractQuotedValue (it); BREAK_IF_ERROR
|
|
|
|
// try to find the file first
|
|
this->m_compiledContent += "// begin of included from file " + filename + "\r\n";
|
|
this->m_compiledContent += this->lookupShaderFile (filename);
|
|
this->m_compiledContent += "\r\n// end of included from file " + filename + "\r\n";
|
|
}
|
|
else
|
|
{
|
|
this->m_compiledContent += '#';
|
|
it ++;
|
|
}
|
|
}
|
|
else if (*it == 'u')
|
|
{
|
|
// uniforms might have extra information for their values
|
|
if (this->peekString ("uniform", it) == true)
|
|
{
|
|
this->ignoreSpaces (it);
|
|
std::string type = this->extractType (it); BREAK_IF_ERROR
|
|
this->ignoreSpaces (it);
|
|
std::string name = this->extractName (it); BREAK_IF_ERROR
|
|
this->ignoreSpaces (it);
|
|
this->expectSemicolon (it); BREAK_IF_ERROR
|
|
this->ignoreSpaces (it);
|
|
|
|
// check if there is any actual extra information and parse it
|
|
if (this->peekString ("//", it) == true)
|
|
{
|
|
this->ignoreSpaces (it);
|
|
std::string::const_iterator begin = it;
|
|
this->ignoreUpToNextLineFeed (it);
|
|
|
|
std::string configuration; configuration.append (begin, it);
|
|
|
|
// parse the parameter information
|
|
this->parseParameterConfiguration (type, name, configuration); BREAK_IF_ERROR
|
|
this->m_compiledContent += "uniform " + type + " " + name + "; // " + configuration;
|
|
}
|
|
else
|
|
{
|
|
this->m_compiledContent += "uniform " + type + " " + name + ";";
|
|
}
|
|
}
|
|
}
|
|
else if (*it == 'a')
|
|
{
|
|
// find attribute definitions
|
|
if (this->peekString ("attribute", it) == true)
|
|
{
|
|
this->ignoreSpaces (it);
|
|
std::string type = this->extractType (it); BREAK_IF_ERROR
|
|
this->ignoreSpaces (it);
|
|
std::string name = this->extractName (it); BREAK_IF_ERROR
|
|
this->ignoreSpaces (it);
|
|
this->expectSemicolon (it); BREAK_IF_ERROR
|
|
|
|
this->m_compiledContent += "// attribute";
|
|
this->m_compiledContent += " " + type + " ";
|
|
this->m_compiledContent += name;
|
|
this->m_compiledContent += "; /* replaced by " + this->lookupReplaceSymbol (name) + " */";
|
|
}
|
|
else
|
|
{
|
|
// check for types first
|
|
std::string type = this->extractType (it);
|
|
|
|
// types not found, try names
|
|
if (this->m_error == false)
|
|
{
|
|
this->m_compiledContent += type;
|
|
}
|
|
else
|
|
{
|
|
this->m_error = false;
|
|
std::string name = this->extractName (it);
|
|
|
|
if (this->m_error == false)
|
|
{
|
|
// check if the name is a translated one or not
|
|
this->m_compiledContent += this->lookupReplaceSymbol (name);
|
|
}
|
|
else
|
|
{
|
|
this->m_error = false;
|
|
this->m_compiledContent += *it;
|
|
it ++;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else if (*it == '/')
|
|
{
|
|
if (this->peekString ("//", it) == true)
|
|
{
|
|
std::string::const_iterator begin = it - 2;
|
|
// is there a COMBO mark to take care of?
|
|
this->ignoreSpaces (it);
|
|
|
|
if (this->peekString ("[COMBO]", it) == true)
|
|
{
|
|
// parse combo json data to define the proper variables
|
|
this->ignoreSpaces (it);
|
|
begin = it;
|
|
this->ignoreUpToNextLineFeed (it);
|
|
|
|
std::string configuration; configuration.append (begin, it);
|
|
|
|
this->m_compiledContent += "// [COMBO] " + configuration;
|
|
|
|
this->parseComboConfiguration (configuration); BREAK_IF_ERROR;
|
|
}
|
|
else if (this->peekString ("[COMBO_OFF]", it) == true)
|
|
{
|
|
// parse combo json data to define the proper variables
|
|
this->ignoreSpaces (it);
|
|
begin = it;
|
|
this->ignoreUpToNextLineFeed (it);
|
|
|
|
std::string configuration; configuration.append (begin, it);
|
|
|
|
this->m_compiledContent += "// [COMBO_OFF] " + configuration;
|
|
|
|
this->parseComboConfiguration (configuration); BREAK_IF_ERROR;
|
|
}
|
|
else
|
|
{
|
|
this->ignoreUpToNextLineFeed (it);
|
|
this->m_compiledContent.append (begin, it);
|
|
}
|
|
}
|
|
else if (this->peekString ("/*", it) == true)
|
|
{
|
|
std::string::const_iterator begin = it - 2;
|
|
this->ignoreUpToBlockCommentEnd (it);
|
|
this->m_compiledContent.append (begin, it);
|
|
}
|
|
else
|
|
{
|
|
this->m_compiledContent += *it;
|
|
it ++;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// check for types first
|
|
std::string type = this->extractType (it);
|
|
|
|
// types not found, try names
|
|
if (this->m_error == false)
|
|
{
|
|
this->m_compiledContent += type;
|
|
}
|
|
else
|
|
{
|
|
this->m_error = false;
|
|
std::string name = this->extractName (it);
|
|
|
|
if (this->m_error == false)
|
|
{
|
|
// check if the name is a translated one or not
|
|
this->m_compiledContent += this->lookupReplaceSymbol (name);
|
|
}
|
|
else
|
|
{
|
|
this->m_error = false;
|
|
this->m_compiledContent += *it;
|
|
it ++;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (this->m_recursive == false)
|
|
{
|
|
std::cout << "======================== COMPILED SHADER " << this->m_file.c_str () << " ========================" << std::endl;
|
|
std::cout << this->m_compiledContent << std::endl;
|
|
}
|
|
|
|
return this->m_compiledContent;
|
|
#undef BREAK_IF_ERROR
|
|
}
|
|
|
|
void Compiler::parseComboConfiguration (const std::string& content)
|
|
{
|
|
json data = json::parse (content);
|
|
auto combo = data.find ("combo");
|
|
auto defvalue = data.find ("default");
|
|
|
|
// add line feed just in case
|
|
this->m_compiledContent += "\n";
|
|
|
|
if (combo == data.end () || defvalue == data.end ())
|
|
{
|
|
throw std::runtime_error ("cannot parse combo information");
|
|
}
|
|
|
|
// check the combos
|
|
std::map<std::string, int>::const_iterator entry = this->m_combos.find ((*combo).get <std::string> ());
|
|
|
|
// if the combo was not found in the predefined values this means that the default value in the JSON data can be used
|
|
// so only define the ones that are not already defined
|
|
if (entry == this->m_combos.end ())
|
|
{
|
|
// if no combo is defined just load the default settings
|
|
if ((*defvalue).is_number_float ())
|
|
{
|
|
this->m_compiledContent += "#define " + (*combo).get <std::string> () + " " + std::to_string ((*defvalue).get <irr::f32> ()) + "\n";
|
|
}
|
|
else if ((*defvalue).is_number_integer ())
|
|
{
|
|
this->m_compiledContent += "#define " + (*combo).get <std::string> () + " " + std::to_string ((*defvalue).get <irr::s32> ()) + "\n";
|
|
}
|
|
else if ((*defvalue).is_string ())
|
|
{
|
|
this->m_compiledContent += "#define " + (*combo).get <std::string> () + " " + (*defvalue).get <std::string> () + "\n";
|
|
}
|
|
else
|
|
{
|
|
throw std::runtime_error ("cannot parse combo information, unknown type");
|
|
}
|
|
}
|
|
}
|
|
|
|
void Compiler::parseParameterConfiguration (const std::string& type, const std::string& name, const std::string& content)
|
|
{
|
|
json data = json::parse (content);
|
|
auto material = data.find ("material");
|
|
auto defvalue = data.find ("default");
|
|
auto range = data.find ("range");
|
|
|
|
// this is not a real parameter
|
|
if (material == data.end () || defvalue == data.end ())
|
|
{
|
|
if (type != "sampler2D")
|
|
throw std::runtime_error ("cannot parse parameter info for " + name);
|
|
|
|
return;
|
|
}
|
|
|
|
Parameters::CShaderParameter* parameter = nullptr;
|
|
|
|
if (type == "vec4")
|
|
{
|
|
parameter = new Parameters::CShaderParameterVector4 (
|
|
WallpaperEngine::Core::ato3vf (*defvalue)
|
|
);
|
|
}
|
|
else if (type == "vec3")
|
|
{
|
|
parameter = new Parameters::CShaderParameterVector3 (
|
|
WallpaperEngine::Core::ato3vf (*defvalue)
|
|
);
|
|
}
|
|
else if (type == "vec2")
|
|
{
|
|
parameter = new Parameters::CShaderParameterVector2 (
|
|
WallpaperEngine::Core::ato2vf (*defvalue)
|
|
);
|
|
}
|
|
else if (type == "float")
|
|
{
|
|
parameter = new Parameters::CShaderParameterFloat ((*defvalue).get <irr::f32> ());
|
|
}
|
|
else if (type == "int")
|
|
{
|
|
parameter = new Parameters::CShaderParameterInteger ((*defvalue).get <irr::s32> ());
|
|
}
|
|
else if (type == "sampler2D")
|
|
{
|
|
// samplers are not saved, we can ignore them for now
|
|
return;
|
|
}
|
|
else
|
|
{
|
|
this->m_error = true;
|
|
this->m_errorInfo = "Unknown parameter type: " + type + " for " + name;
|
|
return;
|
|
}
|
|
|
|
parameter->setIdentifierName (*material);
|
|
parameter->setName (name);
|
|
|
|
this->m_parameters.push_back (parameter);
|
|
}
|
|
|
|
Parameters::CShaderParameter* Compiler::findParameter (const std::string& identifier)
|
|
{
|
|
auto cur = this->m_parameters.begin ();
|
|
auto end = this->m_parameters.end ();
|
|
|
|
for (; cur != end; cur ++)
|
|
{
|
|
if ((*cur)->getIdentifierName () == identifier)
|
|
{
|
|
return (*cur);
|
|
}
|
|
}
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
const std::vector <Parameters::CShaderParameter*>& Compiler::getParameters () const
|
|
{
|
|
return this->m_parameters;
|
|
}
|
|
|
|
std::map<std::string, std::string> Compiler::sVariableReplacement =
|
|
{
|
|
// attribute vec3 a_position
|
|
{"a_Position", "gl_Vertex.xyz"},
|
|
// attribute vec2 a_TexCoord
|
|
{"a_TexCoord", "gl_MultiTexCoord0.xy"},
|
|
// attribute vec3 a_Normal
|
|
{"a_Normal", "gl_Normal.xyz"}
|
|
};
|
|
|
|
std::vector<std::string> Compiler::sTypes =
|
|
{
|
|
"vec4", "vec3", "vec2", "float", "sampler2D", "mat4"
|
|
};
|
|
}
|