/**
* @brief Load an image by file name.
* @param aName Name of the file.
*/
void PCShaderSurface::LoadImage(HashString const &aName)
{
/* If the file was already loaded,
let's avoid assigning a new id. */
TextureData const& textureData = GetManager()->GetTextureData(aName);
if(textureData.mTextureID != (unsigned)-1)
{
mTextureID = textureData.mTextureID;
SetTextureSize(Vector3(textureData.mWidth, textureData.mHeight, 0));
}
// else we load the image from file
else if((mSurface = IMG_Load(Common::RelativePath("Art", aName).c_str())))
{
if ((mSurface->w & (mSurface->w - 1)) != 0 )
{
DebugLogPrint("warning: width of image: %s is not a power of 2\n", aName.ToCharArray());
}
if ((mSurface->h & (mSurface->h - 1)) != 0 )
{
DebugLogPrint("warning: height of image: %s is not a power of 2\n", aName.ToCharArray());
}
SetTextureSize(Vector3(mSurface->w, mSurface->h, 0));
mNumberOfColors = mSurface->format->BytesPerPixel;
if (mNumberOfColors == 4)
{
if (mSurface->format->Rmask == 0x000000ff)
mTextureFormat = GL_RGBA;
else
#ifndef _WIN32
mTextureFormat = GL_BGRA;
#else
mTextureFormat = GL_RGBA;
#endif
}
else if (mNumberOfColors == 3)
{
if (mSurface->format->Rmask == 0x000000ff)
mTextureFormat = GL_RGB;
else
#ifndef _WIN32
mTextureFormat = GL_BGR;
#else
mTextureFormat = GL_RGB;
#endif
}
else
{
DebugLogPrint("warning: image %s is not truecolor... this will probably break\n", aName.ToCharArray());
DebugLogPrint("warning: bytes per pixel for image %s: %d\n", aName.ToCharArray(), mNumberOfColors);
}
AddTexturePairing(aName);
}
else
{
DebugLogPrint("warning: file: %s not found or incompatible format, check this out\n", aName.ToCharArray());
}
}
/**
* @brief Loads a text surface in font.
* @param aFont Font to use.
* @param aText Text to render.
* @param aForegroundColor Color of the text.
* @param aBackgroundColor Color of the background.
* @param aSize Size of font.
* @param aMaxWidth Max width of a single line (in pixels).
* @return
*/
Vector3 PCShaderSurface::LoadText(HashString const &aFont, HashString const &aText, Vector4 const &aForegroundColor, Vector4 const &aBackgroundColor, int aSize, int aMaxWidth)
{
// Endianness is important here
Uint32 rmask, gmask, bmask, amask;
#if SDL_BYTEORDER == SDL_BIG_ENDIAN
rmask = 0xff000000;
gmask = 0x00ff0000;
bmask = 0x0000ff00;
amask = 0x000000ff;
#else
rmask = 0x000000ff;
gmask = 0x0000ff00;
bmask = 0x00ff0000;
amask = 0xff000000;
#endif
HashString const textureDataHash = aFont + aText + Common::IntToString(aSize);
TextureData const& data = GetManager()->GetTextureData(textureDataHash);
if(data.mTextureID != (unsigned)-1)
{
Vector3 size = Vector3(data.mWidth, data.mHeight, 0);
mTextureID = data.mTextureID;
SetTextureSize(size);
return size;
}
else
{
if(!TTF_WasInit())
TTF_Init();
mFont = TTF_OpenFont(Common::RelativePath("Fonts", aFont).c_str(), aSize);
if(!mFont)
{
mFont = NULL;
DebugLogPrint("warning: file not found or incompatible format, check this out\n");
DebugLogPrint("%s", TTF_GetError());
return Vector3(0, 0, 0);
}
// Create text texture
SDL_Color fgColor = {(Uint8)aForegroundColor.x, (Uint8)aForegroundColor.y, (Uint8)aForegroundColor.z, (Uint8)aForegroundColor.w};
//SDL_Color bgColor = {(Uint8)aBackgroundColor.x, (Uint8)aBackgroundColor.y, (Uint8)aBackgroundColor.z, (Uint8)aBackgroundColor.w};
SDL_Surface *msg = TTF_RenderText_Blended_Wrapped(mFont, aText.ToCharArray(), fgColor, aMaxWidth);
if(!msg)
{
DebugLogPrint("TTF_RenderText failed: %s", TTF_GetError());
assert(msg);
}
mTextureFormat = GL_RGBA;
mSurface = SDL_CreateRGBSurface(SDL_SWSURFACE, msg->w, msg->h, 32, rmask, gmask, bmask, amask);
SetTextureSize(Vector3(mSurface->w, mSurface->h, 0));
SDL_BlitSurface(msg, NULL, mSurface, NULL);
AddTexturePairing(textureDataHash);
return Vector3(mSurface->w, mSurface->h, 0);
}
}
/**
* @brief Load shaders.
* @param aVertexShaderFilename Name of vertex shader.
* @param aFragmentShaderFilename Name of fragment shader.
*/
void PCShaderSurface::LoadShaders(HashString const &aVertexShaderFilename, HashString const &aFragmentShaderFilename)
{
mVertexShaderFileName = aVertexShaderFilename;
mFragmentShaderFileName = aFragmentShaderFilename;
HashString shaderKey = aVertexShaderFilename + aFragmentShaderFilename;
if(GetManager()->ShaderDataExists(shaderKey))
{
mProgramID = GetManager()->GetShaderData(shaderKey).mProgramID;
return;
}
std::ifstream vertexFile(Common::RelativePath("Shaders", aVertexShaderFilename.ToCharArray()).c_str());
std::ifstream fragmentFile(Common::RelativePath("Shaders", aFragmentShaderFilename.ToCharArray()).c_str());
if(vertexFile.is_open() && fragmentFile.is_open())
{
GLenum program = glCreateProgram();
GLenum vertexShader = glCreateShader(GL_VERTEX_SHADER);
GLenum fragmentShader = glCreateShader(GL_FRAGMENT_SHADER);
GLint didCompile = 0;
GLint isLinked = 0;
HashString vertexFileContents = std::string((std::istreambuf_iterator<char>(vertexFile)), std::istreambuf_iterator<char>());
const char* vertexContents = vertexFileContents.ToCharArray();
// Compile
glShaderSource(vertexShader, 1, &vertexContents, NULL);
glCompileShader(vertexShader);
glGetShaderiv(vertexShader, GL_COMPILE_STATUS, &didCompile);
if(didCompile == GL_FALSE)
{
DebugLogPrint("VERTEX SHADER %s READ:\n%s\n", aVertexShaderFilename.ToCharArray(), vertexContents);
GLint maxLength = 0;
glGetShaderiv(vertexShader, GL_INFO_LOG_LENGTH, &maxLength);
//The maxLength includes the NULL character
std::vector<char> infoLog(maxLength);
glGetShaderInfoLog(vertexShader, maxLength, &maxLength, &infoLog[0]);
DebugLogPrint("GLERROR %s: %s\n", aVertexShaderFilename.ToCharArray(), &infoLog[0]);
//We don't need the shader anymore.
glDeleteShader(vertexShader);
}
HashString fragmentFileContents = std::string((std::istreambuf_iterator<char>(fragmentFile)), std::istreambuf_iterator<char>());
const char* fragmentContents = fragmentFileContents.ToCharArray();
glShaderSource(fragmentShader, 1, &fragmentContents, NULL);
glCompileShader(fragmentShader);
glGetShaderiv(fragmentShader, GL_COMPILE_STATUS, &didCompile);
if(didCompile == GL_FALSE)
{
DebugLogPrint("FRAGMENT SHADER %s READ:\n%s\n", aFragmentShaderFilename.ToCharArray(), fragmentContents);
GLint maxLength = 0;
glGetShaderiv(fragmentShader, GL_INFO_LOG_LENGTH, &maxLength);
//The maxLength includes the NULL character
std::vector<char> infoLog(maxLength);
glGetShaderInfoLog(fragmentShader, maxLength, &maxLength, &infoLog[0]);
DebugLogPrint("GLERROR %s: %s\n", aFragmentShaderFilename.ToCharArray(), &infoLog[0]);
//We don't need the shader anymore.
glDeleteShader(fragmentShader);
}
// Linking
glAttachShader(program, vertexShader);
glAttachShader(program, fragmentShader);
glLinkProgram(program);
glGetProgramiv(program, GL_LINK_STATUS, &isLinked);
if(isLinked == GL_FALSE)
{
GLint maxLength = 0;
glGetProgramiv(program, GL_INFO_LOG_LENGTH, &maxLength);
//The maxLength includes the NULL character
std::vector<GLchar> infoLog(maxLength);
glGetProgramInfoLog(program, maxLength, &maxLength, &infoLog[0]);
//We don't need the program anymore.
glDeleteProgram(program);
//Don't leak shaders either.
glDeleteShader(vertexShader);
glDeleteShader(fragmentShader);
DebugLogPrint("GL LINK ERROR: %s\n", &infoLog[0]);
}
GetManager()->AddShaderPairing(shaderKey, ShaderData(program, vertexShader, fragmentShader, vertexContents, fragmentContents));
mProgramID = program;
}
else
{
DebugLogPrint("No shader with name %s or %s found\n", aVertexShaderFilename.ToCharArray(), aFragmentShaderFilename.ToCharArray());
assert(!"Shader file not found.");
}
}