move render classes into render dir.

1 files changed, 654 insertions, 0 deletions

diff --git a/src/render/safeopenglgraphics.cpp b/src/render/safeopenglgraphics.cpp
new file mode 100644
index 000000000..1c7130475
--- /dev/null
+++ b/src/render/safeopenglgraphics.cpp
@@ -0,0 +1,654 @@
+/*
+ *  The ManaPlus Client
+ *  Copyright (C) 2004-2009  The Mana World Development Team
+ *  Copyright (C) 2009-2010  The Mana Developers
+ *  Copyright (C) 2011-2013  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 "main.h"
+
+#if defined USE_OPENGL && !defined ANDROID
+#include "render/safeopenglgraphics.h"
+
+#include "configuration.h"
+#include "graphicsmanager.h"
+#include "graphicsvertexes.h"
+#include "logger.h"
+
+#include "resources/image.h"
+#include "resources/openglimagehelper.h"
+
+#include "utils/sdlcheckutils.h"
+
+#include <SDL.h>
+
+#include "debug.h"
+
+GLuint SafeOpenGLGraphics::mLastImage = 0;
+
+SafeOpenGLGraphics::SafeOpenGLGraphics():
+    mTexture(false),
+    mIsByteColor(false),
+    mByteColor(),
+    mFloatColor(1.0f),
+    mColorAlpha(false),
+    mFbo()
+{
+    mOpenGL = 2;
+    mName = "safe OpenGL";
+}
+
+SafeOpenGLGraphics::~SafeOpenGLGraphics()
+{
+}
+
+bool SafeOpenGLGraphics::setVideoMode(const int w, const int h, const int bpp,
+                                      const bool fs, const bool hwaccel,
+                                      const bool resize, const bool noFrame)
+{
+    setMainFlags(w, h, bpp, fs, hwaccel, resize, noFrame);
+
+    return setOpenGLMode();
+}
+
+static inline void drawQuad(const Image *image,
+                            const int srcX, const int srcY,
+                            const int dstX, const int dstY,
+                            const int width, const int height)
+{
+    if (OpenGLImageHelper::mTextureType == GL_TEXTURE_2D)
+    {
+        const float tw = static_cast<float>(image->mTexWidth);
+        const float th = static_cast<float>(image->mTexHeight);
+        // Find OpenGL normalized texture coordinates.
+        const float texX1 = static_cast<float>(srcX) / tw;
+        const float texY1 = static_cast<float>(srcY) / th;
+        const float texX2 = static_cast<float>(srcX + width) / tw;
+        const float texY2 = static_cast<float>(srcY + height) / th;
+
+        glTexCoord2f(texX1, texY1);
+        glVertex2i(dstX, dstY);
+        glTexCoord2f(texX2, texY1);
+        glVertex2i(dstX + width, dstY);
+        glTexCoord2f(texX2, texY2);
+        glVertex2i(dstX + width, dstY + height);
+        glTexCoord2f(texX1, texY2);
+        glVertex2i(dstX, dstY + height);
+    }
+    else
+    {
+        glTexCoord2i(srcX, srcY);
+        glVertex2i(dstX, dstY);
+        glTexCoord2i(srcX + width, srcY);
+        glVertex2i(dstX + width, dstY);
+        glTexCoord2i(srcX + width, srcY + height);
+        glVertex2i(dstX + width, dstY + height);
+        glTexCoord2i(srcX, srcY + height);
+        glVertex2i(dstX, dstY + height);
+    }
+}
+
+static inline void drawRescaledQuad(const Image *const image,
+                                    const int srcX, const int srcY,
+                                    const int dstX, const int dstY,
+                                    const int width, const int height,
+                                    const int desiredWidth,
+                                    const int desiredHeight)
+{
+    if (OpenGLImageHelper::mTextureType == GL_TEXTURE_2D)
+    {
+        const float tw = static_cast<float>(image->mTexWidth);
+        const float th = static_cast<float>(image->mTexHeight);
+        // Find OpenGL normalized texture coordinates.
+        const float texX1 = static_cast<float>(srcX) / tw;
+        const float texY1 = static_cast<float>(srcY) / th;
+        const float texX2 = static_cast<float>(srcX + width) / tw;
+        const float texY2 = static_cast<float>(srcY + height) / th;
+
+        glTexCoord2f(texX1, texY1);
+        glVertex2i(dstX, dstY);
+        glTexCoord2f(texX2, texY1);
+        glVertex2i(dstX + desiredWidth, dstY);
+        glTexCoord2f(texX2, texY2);
+        glVertex2i(dstX + desiredWidth, dstY + desiredHeight);
+        glTexCoord2f(texX1, texY2);
+        glVertex2i(dstX, dstY + desiredHeight);
+    }
+    else
+    {
+        glTexCoord2i(srcX, srcY);
+        glVertex2i(dstX, dstY);
+        glTexCoord2i(srcX + width, srcY);
+        glVertex2i(dstX + desiredWidth, dstY);
+        glTexCoord2i(srcX + width, srcY + height);
+        glVertex2i(dstX + desiredWidth, dstY + desiredHeight);
+        glTexCoord2i(srcX, srcY + height);
+        glVertex2i(dstX, dstY + desiredHeight);
+    }
+}
+
+
+bool SafeOpenGLGraphics::drawImage2(const Image *const image,
+                                    int srcX, int srcY,
+                                    int dstX, int dstY,
+                                    const int width, const int height,
+                                    const bool useColor)
+{
+    FUNC_BLOCK("Graphics::drawImage2", 1)
+    if (!image)
+        return false;
+
+    if (!useColor)
+        setColorAlpha(image->mAlpha);
+
+    bindTexture(OpenGLImageHelper::mTextureType, image->mGLImage);
+
+    setTexturingAndBlending(true);
+
+    // Draw a textured quad.
+    glBegin(GL_QUADS);
+    drawQuad(image, srcX + image->mBounds.x, srcY + image->mBounds.y,
+        dstX, dstY, width, height);
+    glEnd();
+
+    return true;
+}
+
+bool SafeOpenGLGraphics::drawRescaledImage(const Image *const image, int srcX,
+                                           int srcY, int dstX, int dstY,
+                                           const int width, const int height,
+                                           const int desiredWidth,
+                                           const int desiredHeight,
+                                           const bool useColor)
+{
+    return drawRescaledImage(image, srcX, srcY,
+                             dstX, dstY,
+                             width, height,
+                             desiredWidth, desiredHeight,
+                             useColor, true);
+}
+
+bool SafeOpenGLGraphics::drawRescaledImage(const Image *const image, int srcX,
+                                           int srcY, int dstX, int dstY,
+                                           const int width, const int height,
+                                           const int desiredWidth,
+                                           const int desiredHeight,
+                                           const bool useColor,
+                                           bool smooth)
+{
+    FUNC_BLOCK("Graphics::drawRescaledImage", 1)
+    if (!image)
+        return false;
+
+    // Just draw the image normally when no resizing is necessary,
+    if (width == desiredWidth && height == desiredHeight)
+    {
+        return drawImage2(image, srcX, srcY, dstX, dstY,
+                          width, height, useColor);
+    }
+
+    // When the desired image is smaller than the current one,
+    // disable smooth effect.
+    if (width > desiredWidth && height > desiredHeight)
+        smooth = false;
+
+    srcX += image->mBounds.x;
+    srcY += image->mBounds.y;
+
+    if (!useColor)
+        setColorAlpha(image->mAlpha);
+
+    bindTexture(OpenGLImageHelper::mTextureType, image->mGLImage);
+
+    setTexturingAndBlending(true);
+
+    // Draw a textured quad.
+    glBegin(GL_QUADS);
+    drawRescaledQuad(image, srcX, srcY, dstX, dstY, width, height,
+                     desiredWidth, desiredHeight);
+
+    if (smooth)  // A basic smooth effect...
+    {
+        setColorAlpha(0.2f);
+        drawRescaledQuad(image, srcX, srcY, dstX - 1, dstY - 1, width, height,
+                        desiredWidth + 1, desiredHeight + 1);
+        drawRescaledQuad(image, srcX, srcY, dstX + 1, dstY + 1, width, height,
+                        desiredWidth - 1, desiredHeight - 1);
+
+        drawRescaledQuad(image, srcX, srcY, dstX + 1, dstY, width, height,
+                        desiredWidth - 1, desiredHeight);
+        drawRescaledQuad(image, srcX, srcY, dstX, dstY + 1, width, height,
+                        desiredWidth, desiredHeight - 1);
+    }
+
+    glEnd();
+
+    return true;
+}
+
+/* Optimising the functions that Graphics::drawImagePattern would call,
+ * so that glBegin...glEnd are outside the main loop. */
+void SafeOpenGLGraphics::drawImagePattern(const Image *const image,
+                                          const int x, const int y,
+                                          const int w, const int h)
+{
+    FUNC_BLOCK("Graphics::drawImagePattern", 1)
+    if (!image)
+        return;
+
+    const SDL_Rect &imageRect = image->mBounds;
+    const int iw = imageRect.w;
+    const int ih = imageRect.h;
+    if (iw == 0 || ih == 0)
+        return;
+
+    const int srcX = imageRect.x;
+    const int srcY = imageRect.y;
+
+    setColorAlpha(image->mAlpha);
+    bindTexture(OpenGLImageHelper::mTextureType, image->mGLImage);
+    setTexturingAndBlending(true);
+
+    // Draw a set of textured rectangles
+    glBegin(GL_QUADS);
+
+    for (int py = 0; py < h; py += ih)
+    {
+        const int height = (py + ih >= h) ? h - py : ih;
+        const int dstY = y + py;
+        for (int px = 0; px < w; px += iw)
+        {
+            int width = (px + iw >= w) ? w - px : iw;
+            int dstX = x + px;
+            drawQuad(image, srcX, srcY, dstX, dstY, width, height);
+        }
+    }
+
+    glEnd();
+}
+
+void SafeOpenGLGraphics::drawRescaledImagePattern(const Image *const image,
+                                                  const int x, const int y,
+                                                  const int w, const int h,
+                                                  const int scaledWidth,
+                                                  const int scaledHeight)
+{
+    if (!image)
+        return;
+
+    const int iw = scaledWidth;
+    const int ih = scaledHeight;
+    if (iw == 0 || ih == 0)
+        return;
+
+    const SDL_Rect &imageRect = image->mBounds;
+    const int srcX = imageRect.x;
+    const int srcY = imageRect.y;
+
+    setColorAlpha(image->mAlpha);
+    bindTexture(OpenGLImageHelper::mTextureType, image->mGLImage);
+    setTexturingAndBlending(true);
+
+    // Draw a set of textured rectangles
+    glBegin(GL_QUADS);
+
+    const float scaleFactorW = static_cast<float>(scaledWidth)
+        / image->getWidth();
+    const float scaleFactorH = static_cast<float>(scaledHeight)
+        / image->getHeight();
+
+    for (int py = 0; py < h; py += ih)
+    {
+        const int height = (py + ih >= h) ? h - py : ih;
+        const int dstY = y + py;
+        for (int px = 0; px < w; px += iw)
+        {
+            int width = (px + iw >= w) ? w - px : iw;
+            int dstX = x + px;
+
+            drawRescaledQuad(image, srcX, srcY, dstX, dstY,
+                width / scaleFactorW, height / scaleFactorH,
+                scaledWidth, scaledHeight);
+        }
+    }
+
+    glEnd();
+}
+
+void SafeOpenGLGraphics::calcTile(ImageCollection *const vertCol A_UNUSED,
+                                  const Image *const image A_UNUSED,
+                                  int x A_UNUSED, int y A_UNUSED)
+{
+}
+
+void SafeOpenGLGraphics::calcTile(ImageVertexes *const vert A_UNUSED,
+                                  const Image *const image A_UNUSED,
+                                  int x A_UNUSED, int y A_UNUSED) const
+{
+}
+
+void SafeOpenGLGraphics::calcImagePattern(ImageVertexes *const vert A_UNUSED,
+                                          const Image *const image A_UNUSED,
+                                          const int x A_UNUSED,
+                                          const int y A_UNUSED,
+                                          const int w A_UNUSED,
+                                          const int h A_UNUSED) const
+{
+}
+
+void SafeOpenGLGraphics::calcImagePattern(ImageCollection *const vert A_UNUSED,
+                                          const Image *const image A_UNUSED,
+                                          const int x A_UNUSED,
+                                          const int y A_UNUSED,
+                                          const int w A_UNUSED,
+                                          const int h A_UNUSED) const
+{
+}
+
+void SafeOpenGLGraphics::drawTile(const ImageVertexes *const vert A_UNUSED)
+{
+}
+
+void SafeOpenGLGraphics::drawTile(const ImageCollection *const
+                                  vertCol A_UNUSED)
+{
+}
+
+void SafeOpenGLGraphics::updateScreen()
+{
+    BLOCK_START("Graphics::updateScreen")
+    glFlush();
+    glFinish();
+#ifdef USE_SDL2
+    SDL_GL_SwapWindow(mWindow);
+#else
+    SDL_GL_SwapBuffers();
+#endif
+    BLOCK_END("Graphics::updateScreen")
+}
+
+bool SafeOpenGLGraphics::calcWindow(ImageCollection *const vertCol A_UNUSED,
+                                    const int x A_UNUSED, const int y A_UNUSED,
+                                    const int w A_UNUSED, const int h A_UNUSED,
+                                    const ImageRect &imgRect A_UNUSED)
+{
+    return false;
+}
+
+void SafeOpenGLGraphics::_beginDraw()
+{
+    glMatrixMode(GL_TEXTURE);
+    glLoadIdentity();
+
+    glMatrixMode(GL_PROJECTION);
+    glLoadIdentity();
+
+    glOrtho(0.0, static_cast<double>(mRect.w),
+        static_cast<double>(mRect.h), 0.0, -1.0, 1.0);
+
+    glMatrixMode(GL_MODELVIEW);
+    glLoadIdentity();
+
+    glEnable(GL_SCISSOR_TEST);
+    glDisable(GL_DITHER);
+    glDisable(GL_LIGHTING);
+    glDisable(GL_DEPTH_TEST);
+    glDisable(GL_FOG);
+    glDisable(GL_COLOR_LOGIC_OP);
+    glDisable(GL_COLOR_MATERIAL);
+    glDisable(GL_STENCIL_TEST);
+
+    glShadeModel(GL_FLAT);
+
+    glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+
+    pushClipArea(gcn::Rectangle(0, 0, mRect.w, mRect.h));
+}
+
+void SafeOpenGLGraphics::_endDraw()
+{
+    popClipArea();
+}
+
+void SafeOpenGLGraphics::prepareScreenshot()
+{
+    if (config.getBoolValue("usefbo"))
+        graphicsManager.createFBO(mRect.w, mRect.h, &mFbo);
+}
+
+SDL_Surface* SafeOpenGLGraphics::getScreenshot()
+{
+    const int h = mRect.h;
+    const int w = mRect.w - (mRect.w % 4);
+    GLint pack = 1;
+
+    SDL_Surface *const screenshot = MSDL_CreateRGBSurface(
+        SDL_SWSURFACE, w, h, 24, 0xff0000, 0x00ff00, 0x0000ff, 0x000000);
+
+    if (!screenshot)
+        return nullptr;
+
+    if (SDL_MUSTLOCK(screenshot))
+        SDL_LockSurface(screenshot);
+
+    // Grap the pixel buffer and write it to the SDL surface
+    glGetIntegerv(GL_PACK_ALIGNMENT, &pack);
+    glPixelStorei(GL_PACK_ALIGNMENT, 1);
+    glReadPixels(0, 0, w, h, GL_RGB, GL_UNSIGNED_BYTE, screenshot->pixels);
+
+    // Flip the screenshot, as OpenGL has 0,0 in bottom left
+    unsigned int lineSize = 3 * w;
+    GLubyte* buf = static_cast<GLubyte*>(malloc(lineSize));
+
+    const int h2 = h / 2;
+    for (int i = 0; i < h2; i++)
+    {
+        GLubyte *const top = static_cast<GLubyte*>(
+            screenshot->pixels) + lineSize * i;
+        GLubyte *const bot = static_cast<GLubyte*>(
+            screenshot->pixels) + lineSize * (h - 1 - i);
+
+        memcpy(buf, top, lineSize);
+        memcpy(top, bot, lineSize);
+        memcpy(bot, buf, lineSize);
+    }
+
+    free(buf);
+
+    if (config.getBoolValue("usefbo"))
+        graphicsManager.deleteFBO(&mFbo);
+
+    glPixelStorei(GL_PACK_ALIGNMENT, pack);
+
+    if (SDL_MUSTLOCK(screenshot))
+        SDL_UnlockSurface(screenshot);
+
+    return screenshot;
+}
+
+bool SafeOpenGLGraphics::pushClipArea(gcn::Rectangle area)
+{
+    int transX = 0;
+    int transY = 0;
+
+    if (!mClipStack.empty())
+    {
+        const gcn::ClipRectangle &clipArea = mClipStack.top();
+        transX = -clipArea.xOffset;
+        transY = -clipArea.yOffset;
+    }
+
+    const bool result = gcn::Graphics::pushClipArea(area);
+
+    const gcn::ClipRectangle &clipArea = mClipStack.top();
+
+    glPushMatrix();
+    glTranslatef(static_cast<GLfloat>(transX + clipArea.xOffset),
+                 static_cast<GLfloat>(transY + clipArea.yOffset), 0);
+    glScissor(clipArea.x, mRect.h - clipArea.y - clipArea.height,
+        clipArea.width, clipArea.height);
+
+    return result;
+}
+
+void SafeOpenGLGraphics::popClipArea()
+{
+    gcn::Graphics::popClipArea();
+
+    if (mClipStack.empty())
+        return;
+
+    glPopMatrix();
+    const gcn::ClipRectangle &clipArea = mClipStack.top();
+    glScissor(clipArea.x, mRect.h - clipArea.y - clipArea.height,
+        clipArea.width, clipArea.height);
+}
+
+void SafeOpenGLGraphics::drawPoint(int x, int y)
+{
+    setTexturingAndBlending(false);
+    restoreColor();
+
+    glBegin(GL_POINTS);
+    glVertex2i(x, y);
+    glEnd();
+}
+
+void SafeOpenGLGraphics::drawLine(int x1, int y1, int x2, int y2)
+{
+    setTexturingAndBlending(false);
+    restoreColor();
+
+    glBegin(GL_LINES);
+    glVertex2f(static_cast<float>(x1) + 0.5f, static_cast<float>(y1) + 0.5f);
+    glVertex2f(static_cast<float>(x2) + 0.5f, static_cast<float>(y2) + 0.5f);
+    glEnd();
+
+    glBegin(GL_POINTS);
+    glVertex2f(static_cast<float>(x2) + 0.5f, static_cast<float>(y2) + 0.5f);
+    glEnd();
+}
+
+void SafeOpenGLGraphics::drawRectangle(const gcn::Rectangle& rect)
+{
+    drawRectangle(rect, false);
+}
+
+void SafeOpenGLGraphics::fillRectangle(const gcn::Rectangle& rect)
+{
+    drawRectangle(rect, true);
+}
+
+void SafeOpenGLGraphics::setTargetPlane(int width A_UNUSED,
+                                        int height A_UNUSED)
+{
+}
+
+void SafeOpenGLGraphics::setTexturingAndBlending(const bool enable)
+{
+    if (enable)
+    {
+        if (!mTexture)
+        {
+            glEnable(OpenGLImageHelper::mTextureType);
+            mTexture = true;
+        }
+
+        if (!mAlpha)
+        {
+            glEnable(GL_BLEND);
+            mAlpha = true;
+        }
+    }
+    else
+    {
+        mLastImage = 0;
+        if (mAlpha && !mColorAlpha)
+        {
+            glDisable(GL_BLEND);
+            mAlpha = false;
+        }
+        else if (!mAlpha && mColorAlpha)
+        {
+            glEnable(GL_BLEND);
+            mAlpha = true;
+        }
+
+        if (mTexture)
+        {
+            glDisable(OpenGLImageHelper::mTextureType);
+            mTexture = false;
+        }
+    }
+}
+
+void SafeOpenGLGraphics::drawRectangle(const gcn::Rectangle& rect,
+                                       const bool filled)
+{
+    BLOCK_START("Graphics::drawRectangle")
+    const float offset = filled ? 0 : 0.5f;
+
+    setTexturingAndBlending(false);
+    restoreColor();
+
+    glBegin(filled ? GL_QUADS : GL_LINE_LOOP);
+    glVertex2f(static_cast<float>(rect.x) + offset,
+        static_cast<float>(rect.y) + offset);
+    glVertex2f(static_cast<float>(rect.x + rect.width) - offset,
+        static_cast<float>(rect.y) + offset);
+    glVertex2f(static_cast<float>(rect.x + rect.width) - offset,
+        static_cast<float>(rect.y + rect.height) - offset);
+    glVertex2f(static_cast<float>(rect.x) + offset,
+        static_cast<float>(rect.y + rect.height) - offset);
+    glEnd();
+    BLOCK_END("Graphics::drawRectangle")
+}
+
+void SafeOpenGLGraphics::bindTexture(const GLenum target, const GLuint texture)
+{
+    if (mLastImage != texture)
+    {
+        mLastImage = texture;
+        glBindTexture(target, texture);
+    }
+}
+
+void SafeOpenGLGraphics::setColorAlpha(const float alpha)
+{
+    if (!mIsByteColor && mFloatColor == alpha)
+        return;
+
+    glColor4f(1.0f, 1.0f, 1.0f, alpha);
+    mIsByteColor = false;
+    mFloatColor = alpha;
+}
+
+void SafeOpenGLGraphics::restoreColor()
+{
+    if (mIsByteColor && mByteColor == mColor)
+        return;
+
+    glColor4ub(static_cast<GLubyte>(mColor.r),
+               static_cast<GLubyte>(mColor.g),
+               static_cast<GLubyte>(mColor.b),
+               static_cast<GLubyte>(mColor.a));
+    mIsByteColor = true;
+    mByteColor = mColor;
+}
+
+#endif  // USE_OPENGL