ShaderPtr Shader::createSimpleConstantShader( float r, float g, float b )
{
ShaderPtr shader = Shader::create().attachPS( base::path( "base" ) + "/data/glsl/constant.ps.glsl").attachVS( base::path( "base" ) + "/data/glsl/constant.vs.glsl");
shader->setUniform( "color", math::Vec3f(r, g, b) );
return shader;
}
void GL::Program::initFromSource(const char * data)
{
if (!m_Manager)
throw std::runtime_error("resource manager is not available.");
std::vector<std::string> lines;
for (const char * p = data; ; )
{
const char * end = strchr(p, '\n');
if (end)
{
size_t length = end - p;
while (length > 0 && iswhite(p[length - 1]))
--length;
lines.push_back(std::string(p, length) + "\n");
p = end + 1;
}
else
{
size_t length = strlen(p);
while (length > 0 && iswhite(p[length - 1]))
--length;
lines.push_back(std::string(p, length) + "\n");
break;
}
}
std::vector<const char *> vertex;
std::vector<const char *> fragment;
vertex.reserve(lines.size());
fragment.reserve(lines.size());
bool hasVertex = false, hasFragment = 0;
Enum type = GL::NONE;
for (std::vector<std::string>::const_iterator it = lines.begin(); it != lines.end(); ++it)
{
if (it->c_str()[0] != '%')
{
vertex.push_back(type == GL::NONE || type == GL::VERTEX_SHADER ? it->c_str() : "");
fragment.push_back(type == GL::NONE || type == GL::FRAGMENT_SHADER ? it->c_str() : "");
}
else
{
const std::string & str = *it;
const char * file = nullptr;
vertex.push_back("");
fragment.push_back("");
if (str.length() >= 7 && !memcmp(str.c_str(), "%vertex", 7))
{
type = GL::VERTEX_SHADER;
file = str.c_str() + 7;
}
else if (str.length() >= 9 && !memcmp(str.c_str(), "%fragment", 9))
{
type = GL::FRAGMENT_SHADER;
file = str.c_str() + 9;
}
else
{
std::stringstream ss;
ss << "invalid directive '" << str << "' in the vertex program.";
throw std::runtime_error(ss.str());
}
if (file)
{
while (iswhite(*file))
++file;
if (!*file)
file = nullptr;
}
if (!file)
{
if (type == GL::VERTEX_SHADER)
hasVertex = true;
else if (type == GL::FRAGMENT_SHADER)
hasFragment = true;
}
else
{
std::string filename(file);
if (filename.length() > 0 && filename[filename.length() - 1] == '\n')
filename.resize(filename.length() - 1);
attachShader(m_Manager->getShader(type, filename));
}
}
}
if (hasVertex)
{
ShaderPtr shader = m_Manager->createShader(GL::VERTEX_SHADER);
shader->initFromSource(vertex);
attachShader(shader);
}
if (hasFragment)
{
ShaderPtr shader = m_Manager->createShader(GL::FRAGMENT_SHADER);
shader->initFromSource(fragment);
attachShader(shader);
}
link();
}
bool ShaderProgram::addShader(const ShaderPtr& shader) {
glAttachShader(m_programId, shader->getShaderId());
m_linked = false;
m_shaders.push_back(shader);
return true;
}
ShaderPtr ShaderLibrary::CreateShader (const ShaderDesc& desc, const LogFunction& error_log)
{
try
{
//проверка корректности аргументов
if (!desc.name)
throw xtl::make_null_argument_exception ("", "desc.name");
if (!desc.source_code)
throw xtl::make_null_argument_exception ("", "desc.source_code");
if (!desc.source_code_size)
throw xtl::make_null_argument_exception ("", "desc.source_code_size");
if (!desc.profile)
throw xtl::make_null_argument_exception ("", "desc.profile");
const char* options = desc.options ? desc.options : "";
ShaderType type = (ShaderType)-1;
struct Profile2ShaderType
{
const char* profile;
ShaderType type;
const char* dx_profile;
};
static const Profile2ShaderType type_map [] = {
{"hlsl.vs", ShaderType_Vertex, "vs_4_0"},
{"hlsl.ps", ShaderType_Pixel, "ps_4_0"},
{"hlsl.gs", ShaderType_Geometry, "gs_4_0"},
{"hlsl.hs", ShaderType_Hull, "hs_4_0"},
{"hlsl.ds", ShaderType_Domain, "ds_4_0"},
{"hlsl.cs", ShaderType_Compute, "cs_4_0"},
};
static const size_t type_map_size = sizeof (type_map) / sizeof (*type_map);
const char* dx_profile = "";
for (size_t i=0; i<type_map_size; i++)
if (!strcmp (type_map [i].profile, desc.profile))
{
type = type_map [i].type;
dx_profile = type_map [i].dx_profile;
break;
}
if (type == (ShaderType)-1)
throw xtl::make_argument_exception ("", "desc.profile", desc.profile, "Unknown shader profile");
//формирование хэша для поиска в библиотеке
size_t source_code_size = desc.source_code_size == (size_t)-1 ? strlen (desc.source_code) : desc.source_code_size,
hash = common::crc32 (desc.source_code, source_code_size, common::strhash (options));
//поиск уже существующего шейдера
ShaderMap::iterator iter = shaders.find (hash);
if (iter != shaders.end ())
return iter->second;
//создание нового шейдера
ShaderCodePtr code (new ShaderCode (GetDeviceManager (), desc.name, dx_profile, desc.source_code, source_code_size, options, error_log), false);
ShaderPtr shader (new Shader (type, code, *this), false);
//регистрация шейдера в библиотеке
shader->RegisterDestroyHandler (xtl::bind (&ShaderLibrary::RemoveShaderByHash, this, hash), GetTrackable ());
shaders.insert_pair (hash, shader.get ());
return shader;
}
catch (xtl::exception& e)
{
e.touch ("render::low_level::dx11::ShaderLibrary::CreateShader");
throw;
}
}
ShaderPtr
Shader::from_file(GLenum type, std::string const& filename,
std::vector<std::string> const& defines)
{
std::ifstream in(filename);
if (!in)
{
throw std::runtime_error((boost::format("%s: failed to open file") % filename).str());
}
else
{
std::vector<std::string> sources;
// add version declaration
#ifdef HAVE_OPENGLES2
sources.emplace_back("#version 100\n");
#else
sources.emplace_back("#version 330 core\n");
#endif
{ // add custom defines
std::ostringstream os;
for(auto const& def : defines)
{
auto equal_pos = def.find('=');
if (equal_pos == std::string::npos)
{
os << "#define " << def << '\n';
}
else
{
os << "#define " << def.substr(0, equal_pos) << ' ' << def.substr(equal_pos+1) << '\n';
}
}
sources.emplace_back(os.str());
}
{ // add the actual source file
std::regex include_rx("^#\\s*include\\s+\"([^\"]*)\".*$");
int line_count = 0;
std::ostringstream os;
std::string line;
while(std::getline(in, line))
{
std::smatch rx_results;
if (std::regex_match(line, rx_results, include_rx))
{
boost::filesystem::path include_filename(rx_results[1]);
if (include_filename.is_absolute())
{
include_file(include_filename.string(), os);
}
else
{
include_file((boost::filesystem::path(filename).parent_path() / include_filename).string(),
os);
}
os << "#line " << line_count << '\n';
}
else
{
os << line << '\n';
}
line_count += 1;
}
sources.emplace_back(os.str());
}
ShaderPtr shader = std::make_shared<Shader>(type);
shader->source(sources);
shader->compile();
if (!shader->get_compile_status())
{
throw std::runtime_error((boost::format("%s: error:\n %s") % filename % shader->get_info_log()).str());
}
//log_debug("%s: shader compile successful", filename);
return shader;
}
}
bool GLSprite::DrawShaped(
const math::Vector2 &v2Pos,
const math::Vector2 &v2Size,
const Color& color0,
const Color& color1,
const Color& color2,
const Color& color3,
const float angle)
{
if (v2Size == math::Vector2(0,0))
{
return true;
}
// compute flip parameters that will be sent to the VS
math::Vector2 flipMul, flipAdd;
GetFlipShaderParameters(flipAdd, flipMul);
// centralizes the sprite according to the origin
math::Vector2 v2Center = m_normalizedOrigin * v2Size;
GLVideo* video = m_video.lock().get();
ShaderPtr pCurrentVS = video->GetVertexShader();
math::Matrix4x4 mRot;
if (angle != 0.0f)
mRot = math::RotateZ(math::DegreeToRadian(angle));
pCurrentVS->SetMatrixConstant("rotationMatrix", mRot);
// rounds up the final position to avoid alpha distortion
math::Vector2 v2FinalPos;
if (video->IsRoundingUpPosition())
{
v2FinalPos.x = floor(v2Pos.x);
v2FinalPos.y = floor(v2Pos.y);
}
else
{
v2FinalPos = v2Pos;
}
pCurrentVS->SetConstant("size", v2Size);
pCurrentVS->SetConstant("entityPos", v2FinalPos);
pCurrentVS->SetConstant("center", v2Center);
pCurrentVS->SetConstant("flipMul", flipMul);
pCurrentVS->SetConstant("flipAdd", flipAdd);
pCurrentVS->SetConstant("bitmapSize", GetBitmapSizeF());
pCurrentVS->SetConstant("scroll", GetScroll());
pCurrentVS->SetConstant("multiply", GetMultiply());
const bool setCameraPos = pCurrentVS->ConstantExist("cameraPos");
if (setCameraPos)
pCurrentVS->SetConstant("cameraPos", video->GetCameraPos());
if (m_rect.size.x == 0 || m_rect.size.y == 0)
{
pCurrentVS->SetConstant("rectSize", GetBitmapSizeF());
pCurrentVS->SetConstant("rectPos", 0, 0);
}
else
{
pCurrentVS->SetConstant("rectSize", m_rect.size);
pCurrentVS->SetConstant("rectPos", m_rect.pos);
}
pCurrentVS->SetConstant("color0", color0);
pCurrentVS->SetConstant("color1", color1);
pCurrentVS->SetConstant("color2", color2);
pCurrentVS->SetConstant("color3", color3);
if (pCurrentVS->ConstantExist("depth"))
pCurrentVS->SetConstant("depth", video->GetSpriteDepth());
// apply textures according to the rendering mode (pixel shaded or not)
ShaderPtr pCurrentPS = video->GetPixelShader();
SetDiffuseTexture(pCurrentPS);
pCurrentVS->SetShader();
// draw the one-pixel-quad applying the vertex shader
video->GetRectRenderer().Draw(m_rectMode);
return true;
}
