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authorAndrei Karas <akaras@inbox.ru>2012-06-10 16:54:18 +0300
committerAndrei Karas <akaras@inbox.ru>2012-06-10 17:25:07 +0300
commit3a28edfb7ac991ad70a7baf76f48218d9db89bcb (patch)
tree918e56537dd2f7c2ce94e97a297a83a55d6f6ea6 /src/resources/openglimagehelper.cpp
parentf199b9ba7da47cb6f9aa95f843c0628621899aa9 (diff)
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Split ImageHelper to ImageHelper, SDLImageHelper, OpenGLImageHelper.
Diffstat (limited to 'src/resources/openglimagehelper.cpp')
-rw-r--r--src/resources/openglimagehelper.cpp278
1 files changed, 278 insertions, 0 deletions
diff --git a/src/resources/openglimagehelper.cpp b/src/resources/openglimagehelper.cpp
new file mode 100644
index 000000000..1de5305c4
--- /dev/null
+++ b/src/resources/openglimagehelper.cpp
@@ -0,0 +1,278 @@
+/*
+ * The ManaPlus Client
+ * Copyright (C) 2004-2009 The Mana World Development Team
+ * Copyright (C) 2009-2010 The Mana Developers
+ * Copyright (C) 2011-2012 The ManaPlus Developers
+ *
+ * This file is part of The ManaPlus Client.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "resources/openglimagehelper.h"
+
+#ifdef USE_OPENGL
+
+#include "resources/dye.h"
+#include "resources/resourcemanager.h"
+
+#include "openglgraphics.h"
+#include "opengl1graphics.h"
+
+#include "client.h"
+#include "logger.h"
+
+#include "utils/stringutils.h"
+
+#include "resources/image.h"
+
+#include <SDL_image.h>
+#include <SDL_rotozoom.h>
+
+#include "debug.h"
+
+int OpenGLImageHelper::mTextureType = 0;
+int OpenGLImageHelper::mInternalTextureType = GL_RGBA8;
+int OpenGLImageHelper::mTextureSize = 0;
+bool OpenGLImageHelper::mBlur = true;
+int OpenGLImageHelper::mUseOpenGL = 0;
+
+Resource *OpenGLImageHelper::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 = 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);
+ }
+ }
+
+ Image *image = load(surf);
+ SDL_FreeSurface(surf);
+ return image;
+}
+
+Image *OpenGLImageHelper::load(SDL_Surface *tmpImage)
+{
+ return _GLload(tmpImage);
+}
+
+Image *OpenGLImageHelper::createTextSurface(SDL_Surface *tmpImage, float alpha)
+{
+ if (!tmpImage)
+ return nullptr;
+
+ Image *img = _GLload(tmpImage);
+ if (img)
+ img->setAlpha(alpha);
+ return img;
+}
+
+int OpenGLImageHelper::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;
+}
+
+Image *OpenGLImageHelper::_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 OpenGLImageHelper::setLoadAsOpenGL(int useOpenGL)
+{
+ OpenGLImageHelper::mUseOpenGL = useOpenGL;
+}
+
+int OpenGLImageHelper::useOpenGL()
+{
+ return mUseOpenGL;
+}
+#endif