void Shader::link() {
try {
GLint success;
// Link program.
glLinkProgram(_shaderProgram);
glGetProgramiv(_shaderProgram, GL_LINK_STATUS, &success);
// Error check for linking
if ( success == GL_FALSE ) {
GLchar errorLog[1024];
glGetProgramInfoLog(_shaderProgram, sizeof(errorLog), NULL, errorLog);
throw(ShaderException("Error linking shader program: "+
std::string(errorLog)));
}
glValidateProgram(_shaderProgram);
glGetProgramiv(_shaderProgram, GL_VALIDATE_STATUS, &success);
// Error check for validation
if ( success == GL_FALSE ) {
GLchar errorLog[1024];
glGetProgramInfoLog(_shaderProgram, sizeof(errorLog), NULL, errorLog);
throw(ShaderException("Invalid shader program: "+std::string(errorLog)));
}
_bound = true;
unbind();
}
catch (ShaderException e) {
std::cerr << e.what() << std::endl;
exit(1);
}
}
void Shader::compileShader(const char *fileName,
GLSLShader::ShaderType type)
{
if (fileName == nullptr)
return;
if (id_ <= 0)
{
id_ = glCreateProgram();
if (id_ == 0)
{
throw ShaderException("Unable to create shader program.");
}
}
std::ifstream inFile(fileName, std::ios::in);
if (!inFile)
{
std::string message = std::string("Unable to open: ") + fileName;
throw ShaderException(message);
}
std::stringstream code;
code << inFile.rdbuf();
inFile.close();
compileShader(code.str(), type, fileName);
}
void Shader::validate() const
{
if (!isLinked())
{
throw ShaderException("Program is not linked");
}
GLint success;
glValidateProgram(id_);
glGetProgramiv(id_, GL_VALIDATE_STATUS, &success);
if (!success)
{
int length = 0;
std::string logString;
glGetProgramiv(id_, GL_INFO_LOG_LENGTH, &length);
if (length > 0)
{
char *c_log = new char[length];
int written = 0;
glGetProgramInfoLog(id_, length, &written, c_log);
logString = c_log;
delete[] c_log;
}
throw ShaderException(std::string("Program failed to validate\n") + logString);
}
}
Shader(GLenum type, const std::string &filename, const std::string &defines) {
RefCountedPtr<FileSystem::FileData> code = FileSystem::gameDataFiles.ReadFile(filename);
if (!code.Valid())
Error("Could not load %s", filename.c_str());
// Load some common code
RefCountedPtr<FileSystem::FileData> attributesCode = FileSystem::gameDataFiles.ReadFile("shaders/opengl/attributes.glsl");
assert(attributesCode.Valid());
RefCountedPtr<FileSystem::FileData> logzCode = FileSystem::gameDataFiles.ReadFile("shaders/opengl/logz.glsl");
assert(logzCode.Valid());
RefCountedPtr<FileSystem::FileData> libsCode = FileSystem::gameDataFiles.ReadFile("shaders/opengl/lib.glsl");
assert(libsCode.Valid());
AppendSource(s_glslVersion);
AppendSource(defines.c_str());
if (type == GL_VERTEX_SHADER) {
AppendSource("#define VERTEX_SHADER\n");
} else {
AppendSource("#define FRAGMENT_SHADER\n");
}
AppendSource(attributesCode->AsStringRange().StripUTF8BOM());
AppendSource(logzCode->AsStringRange().StripUTF8BOM());
AppendSource(libsCode->AsStringRange().StripUTF8BOM());
AppendSource(code->AsStringRange().StripUTF8BOM());
#if 0
static bool s_bDumpShaderSource = true;
if (s_bDumpShaderSource) {
const char SHADER_OUT_DIR_NAME[] = "shaders";
const char SHADER_OGL_OUT_DIR_NAME[] = "shaders/opengl";
FileSystem::userFiles.MakeDirectory(SHADER_OUT_DIR_NAME);
FileSystem::userFiles.MakeDirectory(SHADER_OGL_OUT_DIR_NAME);
const std::string outFilename(FileSystem::GetUserDir() + "/" + filename);
FILE *tmp = fopen(outFilename.c_str(), "wb");
if(tmp) {
Output("%s", filename);
for( Uint32 i=0; i<blocks.size(); i++ ) {
const char *block = blocks[i];
const GLint sizes = block_sizes[i];
if(block && sizes>0) {
fprintf(tmp, "%.*s", sizes, block);
}
}
fclose(tmp);
} else {
Output("Could not open file %s", outFilename.c_str());
}
}
#endif
shader = glCreateShader(type);
if(glIsShader(shader)!=GL_TRUE)
throw ShaderException();
Compile(shader);
// CheckGLSL may use OS::Warning instead of Error so the game may still (attempt to) run
if (!check_glsl_errors(filename.c_str(), shader))
throw ShaderException();
};
void Shader::compileShader(const std::string &source,
GLSLShader::ShaderType type,
const char *fileName)
{
if (fileName == nullptr)
return;
if (id_ <= 0)
{
id_ = glCreateProgram();
if (id_ == 0)
{
throw ShaderException("Unable to create shader program.");
}
}
GLuint shaderId = glCreateShader(type);
const char *c_code = source.c_str();
glShaderSource(shaderId, 1, &c_code, NULL);
glCompileShader(shaderId);
GLint success;
glGetShaderiv(shaderId, GL_COMPILE_STATUS, &success);
if (!success)
{
int length = 0;
std::string logString;
glGetShaderiv(shaderId, GL_INFO_LOG_LENGTH, &length);
if (length > 0)
{
char *c_log = new char[length];
int written = 0;
glGetShaderInfoLog(shaderId, length, &written, c_log);
logString = c_log;
delete[] c_log;
}
std::string msg;
if (fileName)
{
msg = std::string(fileName) + ": shader compilation failed\n";
}
else
{
msg = "Shader compilation failed.\n";
}
msg += logString;
throw ShaderException(msg);
}
else
{
glAttachShader(id_, shaderId);
}
}
HRESULT Shader::Init( ID3D11Device* device, ID3D11DeviceContext* deviceContext, char* filename, const D3D11_INPUT_ELEMENT_DESC* inputElementDesc, unsigned int numElements )
{
this->zDevice = device;
this->zDeviceContext = deviceContext;
this->zNumElements = numElements;
this->zFilename = filename;
this->zInputElementDesc = (D3D11_INPUT_ELEMENT_DESC*)inputElementDesc;
HRESULT hr = S_OK;
ID3DBlob* mBlobEffect = NULL;
ID3DBlob* mBlobErrors = NULL;
DWORD dwShaderFlags = D3D10_SHADER_ENABLE_STRICTNESS;
#if defined(DEBUG) || defined(_DEBUG)
dwShaderFlags |= D3D10_SHADER_DEBUG;
#endif
D3DX11CompileFromFile(filename, NULL, NULL,
"", "fx_5_0", dwShaderFlags, NULL, NULL,
&mBlobEffect, &mBlobErrors, &hr);
if (FAILED(hr))
{
throw(ShaderException(
__FILE__,
__LINE__,
__FUNCTION__,
"Effect compilation error, file: " + zFilename));
}
if (FAILED(hr = D3DX11CreateEffectFromMemory(
mBlobEffect->GetBufferPointer(),
mBlobEffect->GetBufferSize(),
dwShaderFlags,
this->zDevice,
&this->zEffect)))
{
throw(ShaderException(
__FILE__,
__LINE__,
__FUNCTION__,
"Cannot create effect from memory, file: " + zFilename));
}
SAFE_RELEASE(mBlobEffect);
SAFE_RELEASE(mBlobErrors);
return this->SetTechnique(0);
}
void ShaderProgram::setUniform(const char* location, glm::mat4 mat) {
if(!active) {
throw ShaderException("You need to call ShaderProgram.begin() before assigning uniforms.");
}
GLuint m = glGetUniformLocation(program, location);
glUniformMatrix4fv(m, 1, GL_FALSE, &mat[0][0]);
}
HRESULT Shader::SetTechnique(UINT index)
{
HRESULT hr = S_OK;
if (this->zCurrentTechIndex != index)
{
this->zCurrentTechIndex = index;
this->zTechnique = this->zEffect->GetTechniqueByIndex(index);
if (this->zInputElementDesc)
{
D3DX11_PASS_DESC passDesc;
this->zTechnique->GetPassByIndex(0)->GetDesc(&passDesc);
if (FAILED(hr = this->zDevice->CreateInputLayout(
this->zInputElementDesc,
this->zNumElements,
passDesc.pIAInputSignature,
passDesc.IAInputSignatureSize,
&this->zInputLayout
)))
{
throw(ShaderException(
__FILE__,
__LINE__,
__FUNCTION__,
"Cannot create input layout"));
}
return hr;
}
}
return hr;
}
Shader::Shader(const std::string &source, Shader::Type type)
{
GLenum gl_type;
switch (type)
{
case Shader::Vertex:
gl_type = GL_VERTEX_SHADER;
break;
case Shader::Fragment:
gl_type = GL_FRAGMENT_SHADER;
break;
default:
throw Exception("Invalid shader type.\n");
}
shader = GLSYM(glCreateShader)(gl_type);
const char *src = source.c_str();
GLSYM(glShaderSource)(shader, 1, &src, 0);
GLSYM(glCompileShader)(shader);
GLint status;
GLSYM(glGetShaderiv)(shader, GL_COMPILE_STATUS, &status);
if (status != GL_TRUE)
throw ShaderException(shader);
}
void ShaderProgram::setUniform(const char* location, float value) {
if(!active) {
throw ShaderException("You need to call ShaderProgram.begin() before assigning uniforms.");
}
GLuint m = glGetUniformLocation(program, location);
glUniform1f(m, value);
}
void ShaderProgram::setUniform(const char* location, glm::vec3 vec) {
if(!active) {
throw ShaderException("You need to call ShaderProgram.begin() before assigning uniforms.");
}
GLuint m = glGetUniformLocation(program, location);
glUniform3fv(m, 1, &vec[0]);
}
Shader(GLenum type, const std::string &filename, const std::string &defines) {
RefCountedPtr<FileSystem::FileData> code = FileSystem::gameDataFiles.ReadFile(filename);
if (!code)
OS::Error("Could not load %s", filename.c_str());
// Load some common code
RefCountedPtr<FileSystem::FileData> logzCode = FileSystem::gameDataFiles.ReadFile("shaders/gl2/logz.glsl");
assert(logzCode);
RefCountedPtr<FileSystem::FileData> libsCode = FileSystem::gameDataFiles.ReadFile("shaders/gl2/lib.glsl");
assert(libsCode);
AppendSource(s_glslVersion);
AppendSource(defines.c_str());
if (type == GL_VERTEX_SHADER)
AppendSource("#define VERTEX_SHADER\n");
else
AppendSource("#define FRAGMENT_SHADER\n");
AppendSource(logzCode->AsStringRange().StripUTF8BOM());
AppendSource(libsCode->AsStringRange().StripUTF8BOM());
AppendSource(code->AsStringRange().StripUTF8BOM());
shader = glCreateShader(type);
Compile(shader);
// CheckGLSL may use OS::Warning instead of OS::Error so the game may still (attempt to) run
if (!check_glsl_errors(filename.c_str(), shader))
throw ShaderException();
};
void Shader::compileShader(const char *fileName)
{
if (fileName == nullptr)
return;
int numExts = sizeof(ShaderInfo::extensions) / sizeof(ShaderInfo::shader_file_extension);
std::string ext = getExtension(fileName);
GLSLShader::ShaderType type = GLSLShader::VERTEX;
bool matchFound = false;
for (int i = 0; i < numExts; ++i)
{
if (ext == ShaderInfo::extensions[i].ext)
{
matchFound = true;
type = ShaderInfo::extensions[i].type;
break;
}
}
if (!matchFound)
{
std::string msg = "Unrecognized extension: " + ext;
throw ShaderException(msg);
}
compileShader(fileName, type);
}
GLuint Shader::compileShader( std::string code, GLenum type ) {
try {
GLuint shader = glCreateShader(type);
// Error checking
if ( shader == 0 )
throw("Error creating shader type "+type);
// Convert string to const char.
const GLchar *sStringPtr[1];
sStringPtr[0] = code.c_str();
// Pass code to shader
glShaderSource(shader, 1, (const GLchar **)sStringPtr, NULL);
glCompileShader(shader);
GLint success;
glGetShaderiv(shader, GL_COMPILE_STATUS, &success);
// Error checking for compilation.
if ( success == GL_FALSE ) {
GLchar infoLog[1024];
glGetShaderInfoLog(shader, 1024, NULL, infoLog);
std::ostringstream ss;
ss << "Error compiling shader " << type << ": " << infoLog;
ss << " in shader " << _shaderProgram;
throw(ShaderException(ss.str()));
}
return shader;
}
catch ( ShaderException e ) {
std::cerr << e.what() << std::endl;
exit(1);
}
}
const Shader& Shader::use() const
{
if (id_ <= 0 || (!linked_))
{
throw ShaderException("Shader has not been linked");
}
glUseProgram(id_);
return *this;
}
void Shader::link()
{
if (linked_)
return;
if (id_ <= 0)
{
throw ShaderException("Program has not been compiled.");
}
glLinkProgram(id_);
GLint success;
glGetProgramiv(id_, GL_LINK_STATUS, &success);
if (!success)
{
int length = 0;
std::string logString;
glGetProgramiv(id_, GL_INFO_LOG_LENGTH, &length);
if (length > 0)
{
char *c_log = new char[length];
int written = 0;
glGetProgramInfoLog(id_, length, &written, c_log);
logString = c_log;
delete[] c_log;
}
throw ShaderException(std::string("Program link failed:\n") + logString);
}
else
{
linked_ = true;
}
}
std::string ShaderProgram::readShaderFile(const char *path) {
std::string shaderCode;
std::ifstream shaderStream(path, std::ios::in);
if(shaderStream.is_open()) {
std::string line = "";
while(getline(shaderStream, line)) {
shaderCode += "\n" + line;
}
shaderStream.close();
} else {
throw ShaderException(std::string("Could not open file ") + path);
}
return shaderCode;
}
void ShaderProgram::compileShader(GLuint shader, std::string shaderCode) {
GLint compileResult = GL_FALSE;
int infoLogLength;
char const *sourcePointer = shaderCode.c_str();
glShaderSource(shader, 1, &sourcePointer, NULL);
glCompileShader(shader);
glGetShaderiv(shader, GL_COMPILE_STATUS, &compileResult);
if(compileResult == GL_FALSE) {
glGetShaderiv(shader, GL_INFO_LOG_LENGTH, &infoLogLength);
std::vector<char> shaderErrorMessage(infoLogLength);
glGetShaderInfoLog(shader, infoLogLength, NULL, &shaderErrorMessage[0]);
throw ShaderException(std::string("Error compiling shader: ") + &shaderErrorMessage[0]);
}
}
void Program::link()
{
for (auto shader = std::begin(shaders); shader != std::end(shaders); ++shader)
GLSYM(glAttachShader)(program, (*shader)->object());
GLSYM(glLinkProgram)(program);
GLint status;
GLSYM(glGetProgramiv)(program, GL_LINK_STATUS, &status);
if (status != GL_TRUE)
throw ShaderException(program);
//GLSYM(glValidateProgram)(program);
//GLSYM(glGetProgramiv)(program, GL_VALIDATE_STATUS, &status);
//if (status != GL_TRUE)
// throw ShaderException(program);
m_linked = true;
}
GLuint ShaderProgram::linkProgram(GLuint vertShader, GLuint fragShader) {
GLint compileResult = GL_FALSE;
int infoLogLength;
GLuint program = glCreateProgram();
glAttachShader(program, vertShader);
glAttachShader(program, fragShader);
glLinkProgram(program);
glGetProgramiv(program, GL_LINK_STATUS, &compileResult);
if(compileResult == GL_FALSE) {
glGetProgramiv(program, GL_INFO_LOG_LENGTH, &infoLogLength);
std::vector<char> programErrorMessage(std::max(infoLogLength, int(1)));
glGetProgramInfoLog(program, infoLogLength, NULL, &programErrorMessage[0]);
throw ShaderException(std::string("Error linking shader program: ") + &programErrorMessage[0]);
}
return program;
}
void Shader::loadFromParser(const ShaderParser& parser)
{
std::size_t count = static_cast<std::size_t>(tyr::ShaderType::Count);
for(std::size_t index = static_cast<std::size_t>(tyr::ShaderType::Vertex); index < count; index++)
{
tyr::ShaderType type = static_cast<tyr::ShaderType>(index);
if(parser.hasShader(type))
{
std::unique_ptr<ShaderObject> object(new ShaderObject());
object->loadFromString(parser.getShaderSource(type), type);
myObjects.push_back(std::move(object));
}
}
myShaderProgram = glCreateProgram();
for(std::size_t index = 0; index < myObjects.size(); index++)
glAttachShader(myShaderProgram, myObjects[index]->getGLIdentifier());
glLinkProgram(myShaderProgram);
GLint status;
glGetProgramiv (myShaderProgram, GL_LINK_STATUS, &status);
if(status == GL_FALSE)
{
GLint infoLogLength;
glGetProgramiv(myShaderProgram, GL_INFO_LOG_LENGTH, &infoLogLength);
GLchar *strInfoLog = new GLchar[infoLogLength + 1];
glGetProgramInfoLog(myShaderProgram, infoLogLength, NULL, strInfoLog);
throw ShaderException(std::string("Shader linker failure: ") + strInfoLog);
delete[] strInfoLog;
}
for(std::size_t index = 0; index < myObjects.size(); index++)
glDetachShader(myShaderProgram, myObjects[index]->getGLIdentifier());
myDepthSettings = parser.getDepthSettings();
myBlendSettings = parser.getBlendSettings();
}
void Shader::add( std::string fileName, GLenum type ) {
try {
if ( _shaderProgram == 0 ) _shaderProgram = glCreateProgram();
if (_shaderProgram == 0)
throw (ShaderException("can't create shader program"));
std::string code = addCode(fileName);
GLuint object = compileShader(code, type);
_shaderObjects.insert(std::pair<GLenum, GLuint>(type, object));
// Bind the shader to the program.
glAttachShader(_shaderProgram, object);
}
catch (ShaderException e) {
std::cerr << e.what() << std::endl;
exit(1);
}
catch (std::exception & e) {
std::cout << e.what() << std::endl;
}
catch (...) {
std::cerr << "WTF" << std::endl;
}
}
void ShaderObject::loadFromString(const std::string& source, ShaderType type)
{
myType = type;
myShaderID = glCreateShader(GetGLShaderType(type));
const char* sourcePointer = source.c_str();
glShaderSource(myShaderID, 1, &sourcePointer, NULL);
glCompileShader(myShaderID);
GLint status = GL_FALSE;
glGetShaderiv(myShaderID, GL_COMPILE_STATUS, &status);
if (status == GL_FALSE)
{
GLint infoLogLength;
glGetShaderiv(myShaderID, GL_INFO_LOG_LENGTH, &infoLogLength);
GLchar *strInfoLog = new GLchar[infoLogLength + 1];
glGetShaderInfoLog(myShaderID, infoLogLength, NULL, strInfoLog);
throw ShaderException(myType, strInfoLog);
delete[] strInfoLog;
}
}
Shader(GLenum type, const std::string &filename, const std::string &defines)
{
RefCountedPtr<FileSystem::FileData> filecode = FileSystem::gameDataFiles.ReadFile(filename);
if (!filecode.Valid())
Error("Could not load %s", filename.c_str());
std::string strCode(filecode->AsStringRange().ToString());
size_t found = strCode.find("#include");
while (found != std::string::npos)
{
// find the name of the file to include
const size_t begFilename = strCode.find_first_of("\"", found + 8) + 1;
const size_t endFilename = strCode.find_first_of("\"", begFilename + 1);
const std::string incFilename = strCode.substr(begFilename, endFilename - begFilename);
// check we haven't it already included it (avoids circular dependencies)
const std::set<std::string>::const_iterator foundIt = previousIncludes.find(incFilename);
if (foundIt != previousIncludes.end()) {
Error("Circular, or multiple, include of %s\n", incFilename.c_str());
}
else {
previousIncludes.insert(incFilename);
}
// build path for include
const std::string incPathBuffer = stringf("shaders/opengl/%0", incFilename);
// read included file
RefCountedPtr<FileSystem::FileData> incCode = FileSystem::gameDataFiles.ReadFile(incPathBuffer);
assert(incCode.Valid());
if (incCode.Valid()) {
// replace the #include and filename with the included files text
strCode.replace(found, (endFilename + 1) - found, incCode->GetData(), incCode->GetSize());
found = strCode.find("#include");
}
else {
Error("Could not load %s", incPathBuffer.c_str());
}
}
// Store the modified text with the included files (if any)
const StringRange code(strCode.c_str(), strCode.size());
// Build the final shader text to be compiled
AppendSource(s_glslVersion);
AppendSource(defines.c_str());
if (type == GL_VERTEX_SHADER) {
AppendSource("#define VERTEX_SHADER\n");
} else {
AppendSource("#define FRAGMENT_SHADER\n");
}
AppendSource(code.StripUTF8BOM());
#if 0
static bool s_bDumpShaderSource = true;
if (s_bDumpShaderSource) {
const char SHADER_OUT_DIR_NAME[] = "shaders";
const char SHADER_OGL_OUT_DIR_NAME[] = "shaders/opengl";
FileSystem::userFiles.MakeDirectory(SHADER_OUT_DIR_NAME);
FileSystem::userFiles.MakeDirectory(SHADER_OGL_OUT_DIR_NAME);
const std::string outFilename(FileSystem::GetUserDir() + "/" + filename);
FILE *tmp = fopen(outFilename.c_str(), "wb");
if(tmp) {
Output("%s", filename);
for( Uint32 i=0; i<blocks.size(); i++ ) {
const char *block = blocks[i];
const GLint sizes = block_sizes[i];
if(block && sizes>0) {
fprintf(tmp, "%.*s", sizes, block);
}
}
fclose(tmp);
} else {
Output("Could not open file %s", outFilename.c_str());
}
}
#endif
shader = glCreateShader(type);
if(glIsShader(shader)!=GL_TRUE)
throw ShaderException();
Compile(shader);
// CheckGLSL may use OS::Warning instead of Error so the game may still (attempt to) run
if (!check_glsl_errors(filename.c_str(), shader))
throw ShaderException();
};
