Add safeopenglimagehelper for using in safe opengl mode only.

1 files changed, 475 insertions, 0 deletions

diff --git a/src/resources/safeopenglimagehelper.cpp b/src/resources/safeopenglimagehelper.cpp
new file mode 100644
index 000000000..1271b7e1b
--- /dev/null
+++ b/src/resources/safeopenglimagehelper.cpp
@@ -0,0 +1,475 @@
+/*
+ *  The ManaPlus Client
+ *  Copyright (C) 2004-2009  The Mana World Development Team
+ *  Copyright (C) 2009-2010  The Mana Developers
+ *  Copyright (C) 2011-2015  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/safeopenglimagehelper.h"
+
+#ifdef USE_OPENGL
+
+#include "graphicsmanager.h"
+#include "logger.h"
+
+#include "render/mgl.h"
+#include "render/mglcheck.h"
+#include "render/mobileopengl2graphics.h"
+#include "render/mobileopenglgraphics.h"
+#include "render/modernopenglgraphics.h"
+#include "render/normalopenglgraphics.h"
+#include "render/safeopenglgraphics.h"
+
+#include "resources/dye.h"
+#include "resources/dyepalette.h"
+#include "resources/image.h"
+
+#include "utils/sdlcheckutils.h"
+
+#include <SDL_image.h>
+
+#include "debug.h"
+
+int SafeOpenGLImageHelper::mTextureType = 0;
+int SafeOpenGLImageHelper::mInternalTextureType = GL_RGBA8;
+int SafeOpenGLImageHelper::mTextureSize = 0;
+bool SafeOpenGLImageHelper::mBlur = true;
+bool SafeOpenGLImageHelper::mUseTextureSampler = false;
+
+SafeOpenGLImageHelper::~SafeOpenGLImageHelper()
+{
+    glDeleteTextures(static_cast<GLsizei>(texturesSize - mFreeTextureIndex),
+        &mTextures[mFreeTextureIndex]);
+}
+
+Image *SafeOpenGLImageHelper::load(SDL_RWops *const rw,
+                                   Dye const &dye)
+{
+    SDL_Surface *const tmpImage = loadPng(rw);
+    if (!tmpImage)
+    {
+        logger->log("Error, image load failed: %s", IMG_GetError());
+        return nullptr;
+    }
+
+    SDL_Surface *const surf = convertTo32Bit(tmpImage);
+    MSDL_FreeSurface(tmpImage);
+    if (!surf)
+        return nullptr;
+
+    uint32_t *pixels = static_cast<uint32_t *>(surf->pixels);
+    const int type = dye.getType();
+
+    switch (type)
+    {
+        case 1:
+        {
+            const DyePalette *const pal = dye.getSPalete();
+            if (pal)
+                pal->replaceSOGLColor(pixels, surf->w * surf->h);
+            break;
+        }
+        case 2:
+        {
+            const DyePalette *const pal = dye.getAPalete();
+            if (pal)
+                pal->replaceAOGLColor(pixels, surf->w * surf->h);
+            break;
+        }
+        case 0:
+        default:
+        {
+            dye.normalOGLDye(pixels, surf->w * surf->h);
+            break;
+        }
+    }
+
+    Image *const image = load(surf);
+    MSDL_FreeSurface(surf);
+    return image;
+}
+
+Image *SafeOpenGLImageHelper::load(SDL_Surface *const tmpImage)
+{
+    return glLoad(tmpImage);
+}
+
+Image *SafeOpenGLImageHelper::createTextSurface(SDL_Surface *const tmpImage,
+                                                const int width,
+                                                const int height,
+                                                const float alpha)
+{
+    if (!tmpImage)
+        return nullptr;
+
+    Image *const img = glLoad(tmpImage, width, height);
+    if (img)
+        img->setAlpha(alpha);
+    return img;
+}
+
+int SafeOpenGLImageHelper::powerOfTwo(const 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;
+}
+
+SDL_Surface *SafeOpenGLImageHelper::convertSurfaceNormalize(SDL_Surface
+                                                            *tmpImage,
+                                                            int width,
+                                                            int height)
+{
+    if (!tmpImage)
+        return nullptr;
+
+    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);
+    }
+
+#ifdef USE_SDL2
+    SDL_SetSurfaceAlphaMod(tmpImage, SDL_ALPHA_OPAQUE);
+#else
+    // Make sure the alpha channel is not used, but copied to destination
+    SDL_SetAlpha(tmpImage, 0, SDL_ALPHA_OPAQUE);
+#endif
+
+    // Determine 32-bit masks based on byte order
+    uint32_t 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
+
+    if (tmpImage->format->BitsPerPixel != 32
+        || realWidth != width || realHeight != height
+        || rmask != tmpImage->format->Rmask
+        || gmask != tmpImage->format->Gmask
+        || amask != tmpImage->format->Amask)
+    {
+        SDL_Surface *oldImage = tmpImage;
+#ifdef USE_SDL2
+        SDL_SetSurfaceBlendMode(oldImage, SDL_BLENDMODE_NONE);
+#endif
+        tmpImage = MSDL_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);
+    }
+    return tmpImage;
+}
+
+SDL_Surface *SafeOpenGLImageHelper::convertSurface(SDL_Surface *tmpImage,
+                                                   int width,
+                                                   int height)
+{
+    if (!tmpImage)
+        return nullptr;
+
+#ifdef USE_SDL2
+    SDL_SetSurfaceAlphaMod(tmpImage, SDL_ALPHA_OPAQUE);
+#else
+    // Make sure the alpha channel is not used, but copied to destination
+    SDL_SetAlpha(tmpImage, 0, SDL_ALPHA_OPAQUE);
+#endif
+
+    // Determine 32-bit masks based on byte order
+    uint32_t 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
+
+    if (tmpImage->format->BitsPerPixel != 32
+        || rmask != tmpImage->format->Rmask
+        || gmask != tmpImage->format->Gmask
+        || amask != tmpImage->format->Amask)
+    {
+        SDL_Surface *oldImage = tmpImage;
+#ifdef USE_SDL2
+        SDL_SetSurfaceBlendMode(oldImage, SDL_BLENDMODE_NONE);
+#endif
+        tmpImage = MSDL_CreateRGBSurface(SDL_SWSURFACE, width, height,
+            32, rmask, gmask, bmask, amask);
+
+        if (!tmpImage)
+        {
+            logger->log("Error, image convert failed: out of memory");
+            return nullptr;
+        }
+        SDL_BlitSurface(oldImage, nullptr, tmpImage, nullptr);
+    }
+    return tmpImage;
+}
+
+void SafeOpenGLImageHelper::bindTexture(const GLuint texture)
+{
+    switch (mUseOpenGL)
+    {
+#ifdef __native_client__
+        case RENDER_NORMAL_OPENGL:
+        case RENDER_MODERN_OPENGL:
+        case RENDER_GLES_OPENGL:
+            break;
+        case RENDER_SAFE_OPENGL:
+            SafeOpenGLGraphics::bindTexture(mTextureType, texture);
+            break;
+        case RENDER_GLES2_OPENGL:
+            MobileOpenGL2Graphics::bindTexture(mTextureType, texture);
+            break;
+#else  // __native_client__
+        case RENDER_NORMAL_OPENGL:
+            NormalOpenGLGraphics::bindTexture(mTextureType, texture);
+            break;
+        case RENDER_MODERN_OPENGL:
+            ModernOpenGLGraphics::bindTexture(mTextureType, texture);
+            break;
+        case RENDER_SAFE_OPENGL:
+            SafeOpenGLGraphics::bindTexture(mTextureType, texture);
+            break;
+        case RENDER_GLES_OPENGL:
+            MobileOpenGLGraphics::bindTexture(mTextureType, texture);
+            break;
+        case RENDER_GLES2_OPENGL:
+            MobileOpenGL2Graphics::bindTexture(mTextureType, texture);
+            break;
+#endif  // __native_client__
+        case RENDER_SOFTWARE:
+        case RENDER_SDL2_DEFAULT:
+        case RENDER_NULL:
+        case RENDER_LAST:
+        default:
+            logger->log("Unknown OpenGL backend: %d", mUseOpenGL);
+            break;
+    }
+}
+
+Image *SafeOpenGLImageHelper::glLoad(SDL_Surface *tmpImage,
+                                     int width,
+                                     int height)
+{
+    if (!tmpImage)
+        return nullptr;
+
+    BLOCK_START("SafeOpenGLImageHelper::glLoad")
+    // Flush current error flag.
+    graphicsManager.getLastError();
+
+    if (!width)
+        width = tmpImage->w;
+    if (!height)
+        height = tmpImage->h;
+
+    SDL_Surface *oldImage = tmpImage;
+    tmpImage = convertSurfaceNormalize(tmpImage, width, height);
+    if (!tmpImage)
+        return nullptr;
+
+    const int realWidth = tmpImage->w;
+    const int realHeight = tmpImage->h;
+
+    const GLuint texture = getNewTexture();
+    bindTexture(texture);
+
+    if (SDL_MUSTLOCK(tmpImage))
+        SDL_LockSurface(tmpImage);
+
+    glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
+
+    if (!mUseTextureSampler)
+    {
+        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);
+        }
+    }
+#ifndef ANDROID
+    glTexParameteri(mTextureType, GL_TEXTURE_MAX_LEVEL, 0);
+#endif
+
+    glTexImage2D(mTextureType, 0, mInternalTextureType,
+        tmpImage->w, tmpImage->h,
+        0, GL_RGBA, GL_UNSIGNED_BYTE, tmpImage->pixels);
+
+#ifdef DEBUG_OPENGL
+//  disabled for now, because debugger can't show it
+//    if (isGLNotNull(mglLabelObject))
+//    {
+//        const char *const text = "image text";
+//        mglLabelObject(GL_TEXTURE, texture, strlen(text), text);
+//    }
+#endif
+
+/*
+    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 != tmpImage)
+        MSDL_FreeSurface(tmpImage);
+
+    GLenum error = graphicsManager.getLastError();
+    if (error)
+    {
+        std::string errmsg = GraphicsManager::errorToString(error);
+        logger->log("Error: Image GL import failed: %s (%u)",
+            errmsg.c_str(), error);
+//        return nullptr;
+    }
+
+    BLOCK_END("SafeOpenGLImageHelper::glLoad")
+    return new Image(texture, width, height, realWidth, realHeight);
+}
+
+void SafeOpenGLImageHelper::initTextureSampler(const GLint id)
+{
+    if (mBlur)
+    {
+        mglSamplerParameteri(id, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+        mglSamplerParameteri(id, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+    }
+    else
+    {
+        mglSamplerParameteri(id, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+        mglSamplerParameteri(id, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+    }
+}
+
+SDL_Surface *SafeOpenGLImageHelper::create32BitSurface(int width,
+                                                       int height) const
+{
+#if SDL_BYTEORDER == SDL_BIG_ENDIAN
+    const int rmask = 0xff000000;
+    const int gmask = 0x00ff0000;
+    const int bmask = 0x0000ff00;
+    const int amask = 0x000000ff;
+#else
+    const int rmask = 0x000000ff;
+    const int gmask = 0x0000ff00;
+    const int bmask = 0x00ff0000;
+    const int amask = 0xff000000;
+#endif
+
+    width = powerOfTwo(width);
+    height = powerOfTwo(height);
+
+    return MSDL_CreateRGBSurface(SDL_SWSURFACE,
+        width, height, 32, rmask, gmask, bmask, amask);
+}
+
+GLuint SafeOpenGLImageHelper::getNewTexture()
+{
+    GLuint texture = mTextures[mFreeTextureIndex];
+    mFreeTextureIndex ++;
+    if (mFreeTextureIndex == texturesSize)
+    {
+        mFreeTextureIndex = 0;
+        postInit();
+    }
+    return texture;
+}
+
+void SafeOpenGLImageHelper::postInit()
+{
+    glGenTextures(texturesSize, &mTextures[mFreeTextureIndex]);
+}
+
+void SafeOpenGLImageHelper::invalidate(const GLuint textureId)
+{
+    if (isGLNotNull(mglInvalidateTexImage))
+    {
+        logger->log("invalidate: %u", textureId);
+        mglInvalidateTexImage(textureId, 0);
+    }
+}
+
+void SafeOpenGLImageHelper::copySurfaceToImage(const Image *const image,
+                                               const int x,
+                                               const int y,
+                                               SDL_Surface *surface) const
+{
+    if (!surface || !image)
+        return;
+
+    SDL_Surface *const oldSurface = surface;
+    surface = convertSurface(surface, surface->w, surface->h);
+    if (!surface)
+        return;
+
+    mglTextureSubImage2D(image->mGLImage,
+        mTextureType, 0,
+        x, y,
+        surface->w, surface->h,
+        GL_RGBA, GL_UNSIGNED_BYTE, surface->pixels);
+
+    if (surface != oldSurface)
+        MSDL_FreeSurface(surface);
+}
+
+#endif