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/* This file is part of the Spring engine (GPL v2 or later), see LICENSE.html */
#include "Rendering/GL/myGL.h"
#include "Rendering/Shaders/ShaderHandler.h"
#include "Rendering/GlobalRendering.h"
#include "System/Log/ILog.h"
#include "System/Util.h"
#include <cassert>
CShaderHandler* CShaderHandler::GetInstance() {
static CShaderHandler shaHandler;
return &shaHandler;
}
void CShaderHandler::ReloadAll() {
for (std::map<std::string, ProgramObjMap>::iterator it = programObjects.begin(); it != programObjects.end(); ++it) {
for (ProgramObjMapIt jt = it->second.begin(); jt != it->second.end(); ++jt) {
(jt->second)->Reload(true);
}
}
}
void CShaderHandler::ReleaseProgramObjects(const std::string& poClass) {
if (programObjects.find(poClass) == programObjects.end()) {
return;
}
for (ProgramObjMapIt it = programObjects[poClass].begin(); it != programObjects[poClass].end(); ++it) {
// free the program object and its attachments
if (it->second != Shader::nullProgramObject) {
(it->second)->Release(); delete (it->second);
}
}
programObjects[poClass].clear();
programObjects.erase(poClass);
}
Shader::IProgramObject* CShaderHandler::GetProgramObject(const std::string& poClass, const std::string& poName) {
if (programObjects.find(poClass) != programObjects.end()) {
if (programObjects[poClass].find(poName) != programObjects[poClass].end()) {
return (programObjects[poClass][poName]);
}
}
return NULL;
}
Shader::IProgramObject* CShaderHandler::CreateProgramObject(const std::string& poClass, const std::string& poName, bool arbProgram) {
Shader::IProgramObject* po = Shader::nullProgramObject;
if (programObjects.find(poClass) != programObjects.end()) {
if (programObjects[poClass].find(poName) != programObjects[poClass].end()) {
LOG_L(L_WARNING, "[%s] There is already a shader program named \"%s\"!",
__FUNCTION__, poName.c_str());
return (programObjects[poClass][poName]);
}
} else {
programObjects[poClass] = ProgramObjMap();
}
if (arbProgram) {
if (globalRendering->haveARB) {
po = new Shader::ARBProgramObject(poName);
}
} else {
if (globalRendering->haveGLSL) {
po = new Shader::GLSLProgramObject(poName);
}
}
if (po == Shader::nullProgramObject) {
LOG_L(L_ERROR, "[%s] Tried to create \"%s\" a %s shader program on hardware w/o support for it!",
__FUNCTION__, poName.c_str(), arbProgram ? "ARB" : "GLSL");
}
programObjects[poClass][poName] = po;
return po;
}
Shader::IShaderObject* CShaderHandler::CreateShaderObject(const std::string& soName, const std::string& soDefs, int soType) {
assert(!soName.empty());
const std::string lowerSoName = StringToLower(soName);
const bool arbShader = (lowerSoName.find("arb") != std::string::npos);
/*
const bool arbShader =
lowerSoName.find(".glsl") == std::string::npos &&
lowerSoName.find(".vert") == std::string::npos &&
lowerSoName.find(".frag") == std::string::npos;
*/
Shader::IShaderObject* so = Shader::nullShaderObject;
switch (soType) {
case GL_VERTEX_PROGRAM_ARB:
case GL_FRAGMENT_PROGRAM_ARB: {
assert(arbShader);
if (globalRendering->haveARB) {
so = new Shader::ARBShaderObject(soType, soName);
}
} break;
default: {
// assume GLSL shaders by default
assert(!arbShader);
if (globalRendering->haveGLSL) {
so = new Shader::GLSLShaderObject(soType, soName, soDefs);
}
} break;
}
if (so == Shader::nullShaderObject) {
LOG_L(L_ERROR, "[%s] Tried to create a %s shader (\"%s\") on hardware that does not support them!",
__FUNCTION__, arbShader? "ARB": "GLSL", soName.c_str());
return so;
}
so->Compile(true);
return so;
}
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