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author | Andrei Karas <akaras@inbox.ru> | 2012-06-09 22:46:34 +0300 |
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committer | Andrei Karas <akaras@inbox.ru> | 2012-06-09 23:50:09 +0300 |
commit | ff11053f5f638749c3564c464dc41ebc474b4897 (patch) | |
tree | 8cf7ed8485528c7498612199c7ca56a6fd84f5e5 /src/resources/image.cpp | |
parent | b2c1c301b1e39fbbbb5bde3d4d55d14a9873b51f (diff) | |
download | mv-ff11053f5f638749c3564c464dc41ebc474b4897.tar.gz mv-ff11053f5f638749c3564c464dc41ebc474b4897.tar.bz2 mv-ff11053f5f638749c3564c464dc41ebc474b4897.tar.xz mv-ff11053f5f638749c3564c464dc41ebc474b4897.zip |
Move static methods from Image class to ImageHelper class.
Remove SDL merge method. It was very slow and unused.
Diffstat (limited to 'src/resources/image.cpp')
-rw-r--r-- | src/resources/image.cpp | 642 |
1 files changed, 8 insertions, 634 deletions
diff --git a/src/resources/image.cpp b/src/resources/image.cpp index 85643c8df..0e0937ce6 100644 --- a/src/resources/image.cpp +++ b/src/resources/image.cpp @@ -36,21 +36,13 @@ #include "utils/stringutils.h" +#include "resources/imagehelper.h" + #include <SDL_image.h> #include <SDL_rotozoom.h> #include "debug.h" -#ifdef USE_OPENGL -int Image::mUseOpenGL = 0; -int Image::mTextureType = 0; -int Image::mInternalTextureType = GL_RGBA8; -int Image::mTextureSize = 0; -bool Image::mBlur = true; -#endif -bool Image::mEnableAlphaCache = false; -bool Image::mEnableAlpha = true; - Image::Image(SDL_Surface *image, bool hasAlphaChannel0, Uint8 *alphaChannel): mAlpha(1.0f), mHasAlphaChannel(hasAlphaChannel0), @@ -63,7 +55,7 @@ Image::Image(SDL_Surface *image, bool hasAlphaChannel0, Uint8 *alphaChannel): mGLImage = 0; #endif - mUseAlphaCache = Image::mEnableAlphaCache; + mUseAlphaCache = ImageHelper::mEnableAlphaCache; mBounds.x = 0; mBounds.y = 0; @@ -123,214 +115,6 @@ Image::~Image() unload(); } -Resource *Image::load(SDL_RWops *rw) -{ - SDL_Surface *tmpImage = IMG_Load_RW(rw, 1); - - if (!tmpImage) - { - logger->log("Error, image load failed: %s", IMG_GetError()); - return nullptr; - } - - Image *image = load(tmpImage); - - SDL_FreeSurface(tmpImage); - return image; -} - -Resource *Image::load(SDL_RWops *rw, Dye const &dye) -{ - SDL_Surface *tmpImage = IMG_Load_RW(rw, 1); - - if (!tmpImage) - { - logger->log("Error, image load failed: %s", IMG_GetError()); - return nullptr; - } - - SDL_Surface *surf = nullptr; - SDL_PixelFormat rgba; - rgba.palette = nullptr; - rgba.BitsPerPixel = 32; - rgba.BytesPerPixel = 4; - rgba.colorkey = 0; - rgba.alpha = 255; - if (mUseOpenGL) - { - surf = convertTo32Bit(tmpImage); - SDL_FreeSurface(tmpImage); - - Uint32 *pixels = static_cast<Uint32 *>(surf->pixels); - DyePalette *pal = dye.getSPalete(); - - if (pal) - { - for (Uint32 *p_end = pixels + surf->w * surf->h; - pixels != p_end; ++pixels) - { - Uint8 *p = (Uint8 *)pixels; - const int alpha = *p & 255; - if (!alpha) - continue; - pal->replaceOGLColor(p); - } - } - else - { - for (Uint32 *p_end = pixels + surf->w * surf->h; - pixels != p_end; ++pixels) - { - const Uint32 p = *pixels; - const int alpha = (p >> 24) & 255; - if (!alpha) - continue; - int v[3]; - v[0] = (p) & 255; - v[1] = (p >> 8) & 255; - v[2] = (p >> 16 ) & 255; - dye.update(v); - *pixels = (v[0]) | (v[1] << 8) | (v[2] << 16) | (alpha << 24); - } - } - } - else - { - rgba.Rmask = 0xFF000000; rgba.Rloss = 0; rgba.Rshift = 24; - rgba.Gmask = 0x00FF0000; rgba.Gloss = 0; rgba.Gshift = 16; - rgba.Bmask = 0x0000FF00; rgba.Bloss = 0; rgba.Bshift = 8; - rgba.Amask = 0x000000FF; rgba.Aloss = 0; rgba.Ashift = 0; - - surf = SDL_ConvertSurface(tmpImage, &rgba, SDL_SWSURFACE); - SDL_FreeSurface(tmpImage); - - Uint32 *pixels = static_cast<Uint32 *>(surf->pixels); - DyePalette *pal = dye.getSPalete(); - - if (pal) - { - for (Uint32 *p_end = pixels + surf->w * surf->h; - pixels != p_end; ++pixels) - { - Uint8 *p = (Uint8 *)pixels; - const int alpha = *p & 255; - if (!alpha) - continue; - pal->replaceColor(p + 1); - } - } - else - { - for (Uint32 *p_end = pixels + surf->w * surf->h; - pixels != p_end; ++pixels) - { - const Uint32 p = *pixels; - const int alpha = p & 255; - if (!alpha) - continue; - int v[3]; - v[0] = (p >> 24) & 255; - v[1] = (p >> 16) & 255; - v[2] = (p >> 8 ) & 255; - dye.update(v); - *pixels = (v[0] << 24) | (v[1] << 16) | (v[2] << 8) | alpha; - } - } - } - - Image *image = load(surf); - SDL_FreeSurface(surf); - return image; -} - -Image *Image::load(SDL_Surface *tmpImage) -{ -#ifdef USE_OPENGL - if (mUseOpenGL) - return _GLload(tmpImage); -#endif - return _SDLload(tmpImage); -} - -Image *Image::createTextSurface(SDL_Surface *tmpImage, float alpha) -{ - if (!tmpImage) - return nullptr; - - Image *img; -#ifdef USE_OPENGL - if (mUseOpenGL) - { - img = _GLload(tmpImage); - if (img) - img->setAlpha(alpha); - return img; - } -#endif - - bool hasAlpha = false; - bool converted = false; - - const int sz = tmpImage->w * tmpImage->h; - - // The alpha channel to be filled with alpha values - Uint8 *alphaChannel = new Uint8[sz]; - - const SDL_PixelFormat * const fmt = tmpImage->format; - if (fmt->Amask) - { - for (int i = 0; i < sz; ++ i) - { - Uint32 c = (static_cast<Uint32*>(tmpImage->pixels))[i]; - - unsigned v = (c & fmt->Amask) >> fmt->Ashift; - Uint8 a = (v << fmt->Aloss) + (v >> (8 - (fmt->Aloss << 1))); - - Uint8 a2 = static_cast<Uint8>(static_cast<float>(a) * alpha); - - c &= ~fmt->Amask; - c |= ((a2 >> fmt->Aloss) << fmt->Ashift & fmt->Amask); - (static_cast<Uint32*>(tmpImage->pixels))[i] = c; - - if (a != 255) - hasAlpha = true; - - alphaChannel[i] = a; - } - } - - SDL_Surface *image; - - // Convert the surface to the current display format - if (hasAlpha) - { - image = SDL_DisplayFormatAlpha(tmpImage); - } - else - { - image = SDL_DisplayFormat(tmpImage); - - // We also delete the alpha channel since - // it's not used. - delete [] alphaChannel; - alphaChannel = nullptr; - } - - if (!image) - { - logger->log1("Error: Image convert failed."); - delete [] alphaChannel; - return nullptr; - } - - if (converted) - SDL_FreeSurface(tmpImage); - - img = new Image(image, hasAlpha, alphaChannel); - img->mAlpha = alpha; - return img; -} - void Image::SDLCleanCache() { ResourceManager *resman = ResourceManager::getInstance(); @@ -374,22 +158,13 @@ void Image::unload() #endif } -int Image::useOpenGL() const -{ -#ifdef USE_OPENGL - return mUseOpenGL; -#else - return 0; -#endif -} - bool Image::hasAlphaChannel() { if (mLoaded) return mHasAlphaChannel; #ifdef USE_OPENGL - if (mUseOpenGL) + if (ImageHelper::mUseOpenGL) return true; #endif @@ -406,7 +181,7 @@ SDL_Surface *Image::getByAlpha(float alpha) void Image::setAlpha(float alpha) { - if (mAlpha == alpha || !mEnableAlpha) + if (mAlpha == alpha || !ImageHelper::mEnableAlpha) return; if (alpha < 0.0f || alpha > 1.0f) @@ -456,7 +231,7 @@ void Image::setAlpha(float alpha) } else { - mSDLSurface = Image::SDLDuplicateSurface(mSDLSurface); + mSDLSurface = ImageHelper::SDLDuplicateSurface(mSDLSurface); } // logger->log("miss"); } @@ -510,97 +285,6 @@ void Image::setAlpha(float alpha) } } -Image* Image::SDLmerge(Image *image, int x, int y) -{ - if (!mSDLSurface || !image || !image->mSDLSurface) - return nullptr; - - SDL_Surface* surface = new SDL_Surface(*(image->mSDLSurface)); - - Uint32 surface_pix, cur_pix; - Uint8 r, g, b, a, p_r, p_g, p_b, p_a; - double f_a, f_ca, f_pa; - SDL_PixelFormat *current_fmt = mSDLSurface->format; - SDL_PixelFormat *surface_fmt = surface->format; - int current_offset, surface_offset; - int offset_x, offset_y; - - SDL_LockSurface(surface); - SDL_LockSurface(mSDLSurface); - - const int x0 = (y * mBounds.w) + x; - const int maxX = std::min(image->mBounds.w, - static_cast<Uint16>(mBounds.w - x)); - const int maxY = std::min(image->mBounds.w, - static_cast<Uint16>(mBounds.h - y)); - - // for each pixel lines of a source image - for (offset_x = ((x > 0) ? 0 : -x); offset_x < maxX; offset_x++) - { - const int x1 = x0 + offset_x; - for (offset_y = ((y > 0) ? 0 : -y); offset_y < maxY; offset_y++) - { - // Computing offset on both images - current_offset = (offset_y * mBounds.w) + x1; - surface_offset = offset_y * surface->w + offset_x; - - // Retrieving a pixel to merge - surface_pix = (static_cast<Uint32*>( - surface->pixels))[surface_offset]; - cur_pix = (static_cast<Uint32*>( - mSDLSurface->pixels))[current_offset]; - - // Retreiving each channel of the pixel using pixel format - r = static_cast<Uint8>(((surface_pix & surface_fmt->Rmask) >> - surface_fmt->Rshift) << surface_fmt->Rloss); - g = static_cast<Uint8>(((surface_pix & surface_fmt->Gmask) >> - surface_fmt->Gshift) << surface_fmt->Gloss); - b = static_cast<Uint8>(((surface_pix & surface_fmt->Bmask) >> - surface_fmt->Bshift) << surface_fmt->Bloss); - a = static_cast<Uint8>(((surface_pix & surface_fmt->Amask) >> - surface_fmt->Ashift) << surface_fmt->Aloss); - - // Retreiving previous alpha value - p_a = static_cast<Uint8>(((cur_pix & current_fmt->Amask) >> - current_fmt->Ashift) << current_fmt->Aloss); - - // new pixel with no alpha or nothing on previous pixel - if (a == SDL_ALPHA_OPAQUE || (p_a == 0 && a > 0)) - { - (static_cast<Uint32 *>(surface->pixels))[current_offset] = - SDL_MapRGBA(current_fmt, r, g, b, a); - } - else if (a > 0) - { // alpha is lower => merge color with previous value - f_a = static_cast<double>(a) / 255.0; - f_ca = 1.0 - f_a; - f_pa = static_cast<double>(p_a) / 255.0; - p_r = static_cast<Uint8>(((cur_pix & current_fmt->Rmask) >> - current_fmt->Rshift) << current_fmt->Rloss); - p_g = static_cast<Uint8>(((cur_pix & current_fmt->Gmask) >> - current_fmt->Gshift) << current_fmt->Gloss); - p_b = static_cast<Uint8>(((cur_pix & current_fmt->Bmask) >> - current_fmt->Bshift) << current_fmt->Bloss); - r = static_cast<Uint8>(static_cast<double>(p_r) * f_ca - * f_pa + static_cast<double>(r) * f_a); - g = static_cast<Uint8>(static_cast<double>(p_g) * f_ca - * f_pa + static_cast<double>(g) * f_a); - b = static_cast<Uint8>(static_cast<double>(p_b) * f_ca - * f_pa + static_cast<double>(b) * f_a); - a = (a > p_a ? a : p_a); - (static_cast<Uint32 *>(surface->pixels))[current_offset] = - SDL_MapRGBA(current_fmt, r, g, b, a); - } - } - } - SDL_UnlockSurface(surface); - SDL_UnlockSurface(mSDLSurface); - - Image *newImage = new Image(surface); - - return newImage; -} - Image* Image::SDLgetScaledImage(int width, int height) { // No scaling on incorrect new values. @@ -625,312 +309,18 @@ Image* Image::SDLgetScaledImage(int width, int height) // and about freeing the given SDL_surface*. if (scaledSurface) { - scaledImage = load(scaledSurface); + scaledImage = ImageHelper::load(scaledSurface); SDL_FreeSurface(scaledSurface); } } return scaledImage; } -SDL_Surface* Image::convertTo32Bit(SDL_Surface* tmpImage) -{ - if (!tmpImage) - return nullptr; - SDL_PixelFormat RGBAFormat; - RGBAFormat.palette = nullptr; - RGBAFormat.colorkey = 0; - RGBAFormat.alpha = 0; - RGBAFormat.BitsPerPixel = 32; - RGBAFormat.BytesPerPixel = 4; -#if SDL_BYTEORDER == SDL_BIG_ENDIAN - RGBAFormat.Rmask = 0xFF000000; - RGBAFormat.Rshift = 0; - RGBAFormat.Rloss = 0; - RGBAFormat.Gmask = 0x00FF0000; - RGBAFormat.Gshift = 8; - RGBAFormat.Gloss = 0; - RGBAFormat.Bmask = 0x0000FF00; - RGBAFormat.Bshift = 16; - RGBAFormat.Bloss = 0; - RGBAFormat.Amask = 0x000000FF; - RGBAFormat.Ashift = 24; - RGBAFormat.Aloss = 0; -#else - RGBAFormat.Rmask = 0x000000FF; - RGBAFormat.Rshift = 24; - RGBAFormat.Rloss = 0; - RGBAFormat.Gmask = 0x0000FF00; - RGBAFormat.Gshift = 16; - RGBAFormat.Gloss = 0; - RGBAFormat.Bmask = 0x00FF0000; - RGBAFormat.Bshift = 8; - RGBAFormat.Bloss = 0; - RGBAFormat.Amask = 0xFF000000; - RGBAFormat.Ashift = 0; - RGBAFormat.Aloss = 0; -#endif - return SDL_ConvertSurface(tmpImage, &RGBAFormat, SDL_SWSURFACE); -} - -SDL_Surface* Image::SDLDuplicateSurface(SDL_Surface* tmpImage) -{ - if (!tmpImage || !tmpImage->format) - return nullptr; - - return SDL_ConvertSurface(tmpImage, tmpImage->format, SDL_SWSURFACE); -} - -Image *Image::_SDLload(SDL_Surface *tmpImage) -{ - if (!tmpImage) - return nullptr; - - bool hasAlpha = false; - bool converted = false; - - if (tmpImage->format->BitsPerPixel != 32) - { - tmpImage = convertTo32Bit(tmpImage); - - if (!tmpImage) - return nullptr; - converted = true; - } - - const int sz = tmpImage->w * tmpImage->h; - - // The alpha channel to be filled with alpha values - Uint8 *alphaChannel = new Uint8[sz]; - - // Figure out whether the image uses its alpha layer - if (!tmpImage->format->palette) - { - const SDL_PixelFormat * const fmt = tmpImage->format; - if (fmt->Amask) - { - for (int i = 0; i < sz; ++ i) - { - unsigned v = ((static_cast<Uint32*>(tmpImage->pixels))[i] - & fmt->Amask) >> fmt->Ashift; - Uint8 a = (v << fmt->Aloss) + (v >> (8 - (fmt->Aloss << 1))); - - if (a != 255) - hasAlpha = true; - - alphaChannel[i] = a; - } - } - else - { - if (SDL_ALPHA_OPAQUE != 255) - { - hasAlpha = true; - memset(alphaChannel, SDL_ALPHA_OPAQUE, sz); - } - } - } - else - { - if (SDL_ALPHA_OPAQUE != 255) - { - hasAlpha = true; - memset(alphaChannel, SDL_ALPHA_OPAQUE, sz); - } - } - - SDL_Surface *image; - - // Convert the surface to the current display format - if (hasAlpha) - { - image = SDL_DisplayFormatAlpha(tmpImage); - } - else - { - image = SDL_DisplayFormat(tmpImage); - - // We also delete the alpha channel since - // it's not used. - delete [] alphaChannel; - alphaChannel = nullptr; - } - - if (!image) - { - logger->log1("Error: Image convert failed."); - delete [] alphaChannel; - return nullptr; - } - - if (converted) - SDL_FreeSurface(tmpImage); - - return new Image(image, hasAlpha, alphaChannel); -} - -#ifdef USE_OPENGL -Image *Image::_GLload(SDL_Surface *tmpImage) -{ - if (!tmpImage) - return nullptr; - - // Flush current error flag. - glGetError(); - - int width = tmpImage->w; - int height = tmpImage->h; - int realWidth = powerOfTwo(width); - int realHeight = powerOfTwo(height); - - if (realWidth < width || realHeight < height) - { - logger->log("Warning: image too large, cropping to %dx%d texture!", - tmpImage->w, tmpImage->h); - } - - // Make sure the alpha channel is not used, but copied to destination - SDL_SetAlpha(tmpImage, 0, SDL_ALPHA_OPAQUE); - - // Determine 32-bit masks based on byte order - 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 - - SDL_Surface *oldImage = nullptr; - if (tmpImage->format->BitsPerPixel != 32 - || realWidth != width || realHeight != height - || rmask != tmpImage->format->Rmask - || gmask != tmpImage->format->Gmask - || amask != tmpImage->format->Amask) - { - oldImage = tmpImage; - tmpImage = SDL_CreateRGBSurface(SDL_SWSURFACE, realWidth, realHeight, - 32, rmask, gmask, bmask, amask); - - if (!tmpImage) - { - logger->log("Error, image convert failed: out of memory"); - return nullptr; - } - SDL_BlitSurface(oldImage, nullptr, tmpImage, nullptr); - } - - GLuint texture; - glGenTextures(1, &texture); - if (mUseOpenGL == 1) - OpenGLGraphics::bindTexture(mTextureType, texture); - else if (mUseOpenGL == 2) - OpenGL1Graphics::bindTexture(mTextureType, texture); - - if (SDL_MUSTLOCK(tmpImage)) - SDL_LockSurface(tmpImage); - - glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE); - if (mBlur) - { - glTexParameteri(mTextureType, GL_TEXTURE_MIN_FILTER, GL_LINEAR); - glTexParameteri(mTextureType, GL_TEXTURE_MAG_FILTER, GL_LINEAR); - } - else - { - glTexParameteri(mTextureType, GL_TEXTURE_MIN_FILTER, GL_NEAREST); - glTexParameteri(mTextureType, GL_TEXTURE_MAG_FILTER, GL_NEAREST); - } - - glTexImage2D(mTextureType, 0, mInternalTextureType, - tmpImage->w, tmpImage->h, - 0, GL_RGBA, GL_UNSIGNED_BYTE, tmpImage->pixels); - -/* - GLint compressed; - glGetTexLevelParameteriv(mTextureType, 0, - GL_TEXTURE_COMPRESSED_ARB, &compressed); - if (compressed) - logger->log("image compressed"); - else - logger->log("image not compressed"); -*/ - -#ifdef DEBUG_OPENGL_LEAKS - textures_count ++; -#endif - - if (SDL_MUSTLOCK(tmpImage)) - SDL_UnlockSurface(tmpImage); - - if (oldImage) - SDL_FreeSurface(tmpImage); - - GLenum error = glGetError(); - if (error) - { - std::string errmsg = "Unknown error"; - switch (error) - { - case GL_INVALID_ENUM: - errmsg = "GL_INVALID_ENUM"; - break; - case GL_INVALID_VALUE: - errmsg = "GL_INVALID_VALUE"; - break; - case GL_INVALID_OPERATION: - errmsg = "GL_INVALID_OPERATION"; - break; - case GL_STACK_OVERFLOW: - errmsg = "GL_STACK_OVERFLOW"; - break; - case GL_STACK_UNDERFLOW: - errmsg = "GL_STACK_UNDERFLOW"; - break; - case GL_OUT_OF_MEMORY: - errmsg = "GL_OUT_OF_MEMORY"; - break; - default: - break; - } - logger->log("Error: Image GL import failed: %s", errmsg.c_str()); - return nullptr; - } - - return new Image(texture, width, height, realWidth, realHeight); -} - -void Image::setLoadAsOpenGL(int useOpenGL) -{ - Image::mUseOpenGL = useOpenGL; -} - -int Image::powerOfTwo(int input) -{ - int value; - if (mTextureType == GL_TEXTURE_2D) - { - value = 1; - while (value < input && value < mTextureSize) - value <<= 1; - } - else - { - value = input; - } - return value >= mTextureSize ? mTextureSize : value; -} -#endif - Image *Image::getSubImage(int x, int y, int width, int height) { // Create a new clipped sub-image #ifdef USE_OPENGL - if (mUseOpenGL) + if (ImageHelper::mUseOpenGL) { return new SubImage(this, mGLImage, x, y, width, height, mTexWidth, mTexHeight); @@ -946,22 +336,6 @@ void Image::SDLTerminateAlphaCache() mUseAlphaCache = false; } -void Image::dumpSurfaceFormat(SDL_Surface *image) -{ - if (image->format) - { - const SDL_PixelFormat * const format = image->format; - logger->log("Bytes per pixel: %d", format->BytesPerPixel); - logger->log("Alpha: %d", format->alpha); - logger->log("Loss: %02x, %02x, %02x, %02x", (int)format->Rloss, - (int)format->Gloss, (int)format->Bloss, (int)format->Aloss); - logger->log("Shift: %02x, %02x, %02x, %02x", (int)format->Rshift, - (int)format->Gshift, (int)format->Bshift, (int)format->Ashift); - logger->log("Mask: %08x, %08x, %08x, %08x", format->Rmask, - format->Gmask, format->Bmask, format->Amask); - } -} - //============================================================================ // SubImage Class //============================================================================ |