//load, compile and link
void Program::LoadShaders(const std::string &name, const std::string &defines)
{
const std::string filename = std::string("shaders/opengl/") + name;
//load, create and compile shaders
Shader vs(GL_VERTEX_SHADER, filename + ".vert", defines);
Shader fs(GL_FRAGMENT_SHADER, filename + ".frag", defines);
//create program, attach shaders and link
m_program = glCreateProgram();
if(glIsProgram(m_program)!=GL_TRUE)
throw ProgramException();
glAttachShader(m_program, vs.shader);
glAttachShader(m_program, fs.shader);
//extra attribs, if they exist
glBindAttribLocation(m_program, 0, "a_vertex");
glBindAttribLocation(m_program, 1, "a_normal");
glBindAttribLocation(m_program, 2, "a_color");
glBindAttribLocation(m_program, 3, "a_uv0");
glBindAttribLocation(m_program, 4, "a_transform");
glBindFragDataLocation(m_program, 0, "frag_color");
glLinkProgram(m_program);
check_glsl_errors(name.c_str(), m_program);
//shaders may now be deleted by Shader destructor
}
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();
};
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();
};
//load, compile and link
void Program::LoadShaders(const std::string &name, const std::string &defines)
{
const std::string filename = std::string("shaders/gl2/") + name;
//load, create and compile shaders
Shader vs(GL_VERTEX_SHADER, filename + ".vert", defines);
Shader fs(GL_FRAGMENT_SHADER, filename + ".frag", defines);
//create program, attach shaders and link
m_program = glCreateProgram();
glAttachShader(m_program, vs.shader);
glAttachShader(m_program, fs.shader);
glLinkProgram(m_program);
check_glsl_errors(name.c_str(), m_program);
//shaders may now be deleted by Shader destructor
}
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();
};