Initial commit.

This code based on mana client http://www.gitorious.org/mana/mana
and my private repository.

1 files changed, 603 insertions, 0 deletions

diff --git a/src/opengl1graphics.cpp b/src/opengl1graphics.cpp
new file mode 100644
index 000000000..acd4c9d13
--- /dev/null
+++ b/src/opengl1graphics.cpp
@@ -0,0 +1,603 @@
+/*
+ *  The Mana Client
+ *  Copyright (C) 2004-2009  The Mana World Development Team
+ *  Copyright (C) 2009-2010  The Mana Developers
+ *
+ *  This file is part of The Mana 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 "log.h"
+#include "opengl1graphics.h"
+
+#include "resources/image.h"
+
+#ifdef USE_OPENGL
+
+#ifdef __APPLE__
+#include <OpenGL/OpenGL.h>
+#endif
+
+#include <SDL.h>
+
+#ifndef GL_TEXTURE_RECTANGLE_ARB
+#define GL_TEXTURE_RECTANGLE_ARB 0x84F5
+#define GL_MAX_RECTANGLE_TEXTURE_SIZE_ARB 0x84F8
+#endif
+
+GLuint OpenGL1Graphics::mLastImage = 0;
+
+OpenGL1Graphics::OpenGL1Graphics():
+    mAlpha(false), mTexture(false), mColorAlpha(false),
+    mSync(false)
+{
+}
+
+OpenGL1Graphics::~OpenGL1Graphics()
+{
+}
+
+void OpenGL1Graphics::setSync(bool sync)
+{
+    mSync = sync;
+}
+
+bool OpenGL1Graphics::setVideoMode(int w, int h, int bpp,
+                                   bool fs, bool hwaccel)
+{
+    logger->log("Setting video mode %dx%d %s",
+            w, h, fs ? "fullscreen" : "windowed");
+
+    int displayFlags = SDL_ANYFORMAT | SDL_OPENGL;
+
+    mWidth = w;
+    mHeight = h;
+    mBpp = bpp;
+    mFullscreen = fs;
+    mHWAccel = hwaccel;
+
+    if (fs)
+        displayFlags |= SDL_FULLSCREEN;
+
+    SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
+
+    if (!(mTarget = SDL_SetVideoMode(w, h, bpp, displayFlags)))
+        return false;
+
+#ifdef __APPLE__
+    if (mSync)
+    {
+        const GLint VBL = 1;
+        CGLSetParameter(CGLGetCurrentContext(), kCGLCPSwapInterval, &VBL);
+    }
+#endif
+
+    // Setup OpenGL
+    glViewport(0, 0, w, h);
+    glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_FASTEST);
+    int gotDoubleBuffer;
+    SDL_GL_GetAttribute(SDL_GL_DOUBLEBUFFER, &gotDoubleBuffer);
+    logger->log("Using OpenGL %s double buffering.",
+            (gotDoubleBuffer ? "with" : "without"));
+
+    char const *glExtensions = (char const *)glGetString(GL_EXTENSIONS);
+    GLint texSize;
+    bool rectTex = strstr(glExtensions, "GL_ARB_texture_rectangle");
+    if (rectTex)
+    {
+        Image::mTextureType = GL_TEXTURE_RECTANGLE_ARB;
+        glGetIntegerv(GL_MAX_RECTANGLE_TEXTURE_SIZE_ARB, &texSize);
+    }
+    else
+    {
+        Image::mTextureType = GL_TEXTURE_2D;
+        glGetIntegerv(GL_MAX_TEXTURE_SIZE, &texSize);
+    }
+    Image::mTextureSize = texSize;
+    logger->log("OpenGL texture size: %d pixels%s", Image::mTextureSize,
+                rectTex ? " (rectangle textures)" : "");
+
+    return true;
+}
+
+static inline void drawQuad(Image *image,
+                            int srcX, int srcY, int dstX, int dstY,
+                            int width, int height)
+{
+    if (image->getTextureType() == GL_TEXTURE_2D)
+    {
+        // Find OpenGL normalized texture coordinates.
+        float texX1 = srcX / (float) image->getTextureWidth();
+        float texY1 = srcY / (float) image->getTextureHeight();
+        float texX2 = (srcX + width) / (float) image->getTextureWidth();
+        float texY2 = (srcY + height) / (float) image->getTextureHeight();
+
+        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(Image *image, int srcX, int srcY,
+                                    int dstX, int dstY, int width, int height,
+                                    int desiredWidth, int desiredHeight)
+{
+    if (image->getTextureType() == GL_TEXTURE_2D)
+    {
+        // Find OpenGL normalized texture coordinates.
+        float texX1 = srcX / (float) image->getTextureWidth();
+        float texY1 = srcY / (float) image->getTextureHeight();
+        float texX2 = (srcX + width) / (float) image->getTextureWidth();
+        float texY2 = (srcY + height) / (float) image->getTextureHeight();
+
+        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 OpenGL1Graphics::drawImage(Image *image, int srcX, int srcY,
+                                int dstX, int dstY,
+                                int width, int height, bool useColor)
+{
+    if (!image)
+        return false;
+
+    srcX += image->mBounds.x;
+    srcY += image->mBounds.y;
+
+    if (!useColor)
+        glColor4f(1.0f, 1.0f, 1.0f, image->mAlpha);
+
+    bindTexture(Image::mTextureType, image->mGLImage);
+
+    setTexturingAndBlending(true);
+
+    // Draw a textured quad.
+    glBegin(GL_QUADS);
+    drawQuad(image, srcX, srcY, dstX, dstY, width, height);
+    glEnd();
+
+    if (!useColor)
+    {
+        glColor4ub(static_cast<GLubyte>(mColor.r),
+                   static_cast<GLubyte>(mColor.g),
+                   static_cast<GLubyte>(mColor.b),
+                   static_cast<GLubyte>(mColor.a));
+    }
+
+    return true;
+}
+
+bool OpenGL1Graphics::drawRescaledImage(Image *image, int srcX, int srcY,
+                                        int dstX, int dstY,
+                                        int width, int height,
+                                        int desiredWidth, int desiredHeight,
+                                        bool useColor)
+{
+    return drawRescaledImage(image, srcX, srcY,
+                             dstX, dstY,
+                             width, height,
+                             desiredWidth, desiredHeight,
+                             useColor, true);
+}
+
+bool OpenGL1Graphics::drawRescaledImage(Image *image, int srcX, int srcY,
+                                        int dstX, int dstY,
+                                        int width, int height,
+                                        int desiredWidth, int desiredHeight,
+                                        bool useColor, bool smooth)
+{
+    if (!image)
+        return false;
+
+    // Just draw the image normally when no resizing is necessary,
+    if (width == desiredWidth && height == desiredHeight)
+    {
+        return drawImage(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)
+        glColor4f(1.0f, 1.0f, 1.0f, image->mAlpha);
+
+    bindTexture(Image::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...
+    {
+        glColor4f(1.0f, 1.0f, 1.0f, 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();
+
+    if (!useColor)
+    {
+        glColor4ub(static_cast<GLubyte>(mColor.r),
+                   static_cast<GLubyte>(mColor.g),
+                   static_cast<GLubyte>(mColor.b),
+                   static_cast<GLubyte>(mColor.a));
+    }
+
+    return true;
+}
+
+/* Optimising the functions that Graphics::drawImagePattern would call,
+ * so that glBegin...glEnd are outside the main loop. */
+void OpenGL1Graphics::drawImagePattern(Image *image, int x, int y,
+                                       int w, int h)
+{
+    if (!image)
+        return;
+
+    const int srcX = image->mBounds.x;
+    const int srcY = image->mBounds.y;
+
+    const int iw = image->getWidth();
+    const int ih = image->getHeight();
+    if (iw == 0 || ih == 0)
+        return;
+
+    glColor4f(1.0f, 1.0f, 1.0f, image->mAlpha);
+
+    bindTexture(Image::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();
+
+    glColor4ub(static_cast<GLubyte>(mColor.r),
+               static_cast<GLubyte>(mColor.g),
+               static_cast<GLubyte>(mColor.b),
+               static_cast<GLubyte>(mColor.a));
+}
+
+void OpenGL1Graphics::drawRescaledImagePattern(Image *image, int x, int y,
+                                               int w, int h,
+                                               int scaledWidth,
+                                               int scaledHeight)
+{
+    if (!image)
+        return;
+
+    const int srcX = image->mBounds.x;
+    const int srcY = image->mBounds.y;
+
+    const int iw = scaledWidth;
+    const int ih = scaledHeight;
+    if (iw == 0 || ih == 0)
+        return;
+
+    glColor4f(1.0f, 1.0f, 1.0f, image->mAlpha);
+
+    bindTexture(Image::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;
+
+            drawRescaledQuad(image, srcX, srcY, dstX, dstY,
+                             width, height, scaledWidth, scaledHeight);
+        }
+    }
+
+    glEnd();
+
+    glColor4ub(mColor.r, mColor.g, mColor.b, mColor.a);
+}
+
+void OpenGL1Graphics::updateScreen()
+{
+    glFlush();
+    glFinish();
+    SDL_GL_SwapBuffers();
+}
+
+void OpenGL1Graphics::_beginDraw()
+{
+    glMatrixMode(GL_TEXTURE);
+    glLoadIdentity();
+
+    glMatrixMode(GL_PROJECTION);
+    glLoadIdentity();
+
+    glOrtho(0.0, (double)mTarget->w, (double)mTarget->h, 0.0, -1.0, 1.0);
+
+    glMatrixMode(GL_MODELVIEW);
+    glLoadIdentity();
+
+    glEnable(GL_SCISSOR_TEST);
+
+    glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+
+    pushClipArea(gcn::Rectangle(0, 0, mTarget->w, mTarget->h));
+}
+
+void OpenGL1Graphics::_endDraw()
+{
+}
+
+SDL_Surface* OpenGL1Graphics::getScreenshot()
+{
+    int h = mTarget->h;
+    int w = mTarget->w;
+
+    SDL_Surface *screenshot = SDL_CreateRGBSurface(
+            SDL_SWSURFACE,
+            w, h, 24,
+            0xff0000, 0x00ff00, 0x0000ff, 0x000000);
+
+    if (SDL_MUSTLOCK(screenshot))
+        SDL_LockSurface(screenshot);
+
+    // Grap the pixel buffer and write it to the SDL surface
+    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 = (GLubyte*)malloc(lineSize);
+
+    for (int i = 0; i < (h / 2); i++)
+    {
+        GLubyte *top = (GLubyte*)screenshot->pixels + lineSize * i;
+        GLubyte *bot = (GLubyte*)screenshot->pixels + lineSize * (h - 1 - i);
+
+        memcpy(buf, top, lineSize);
+        memcpy(top, bot, lineSize);
+        memcpy(bot, buf, lineSize);
+    }
+
+    free(buf);
+
+    if (SDL_MUSTLOCK(screenshot))
+        SDL_UnlockSurface(screenshot);
+
+    return screenshot;
+}
+
+bool OpenGL1Graphics::pushClipArea(gcn::Rectangle area)
+{
+    int transX = 0;
+    int transY = 0;
+
+    if (!mClipStack.empty())
+    {
+        transX = -mClipStack.top().xOffset;
+        transY = -mClipStack.top().yOffset;
+    }
+
+    bool result = gcn::Graphics::pushClipArea(area);
+
+    transX += mClipStack.top().xOffset;
+    transY += mClipStack.top().yOffset;
+
+    glPushMatrix();
+    glTranslatef(static_cast<GLfloat>(transX),
+                 static_cast<GLfloat>(transY), 0);
+    glScissor(mClipStack.top().x,
+            mTarget->h - mClipStack.top().y - mClipStack.top().height,
+            mClipStack.top().width,
+            mClipStack.top().height);
+
+    return result;
+}
+
+void OpenGL1Graphics::popClipArea()
+{
+    gcn::Graphics::popClipArea();
+
+    if (mClipStack.empty())
+        return;
+
+    glPopMatrix();
+    glScissor(mClipStack.top().x,
+              mTarget->h - mClipStack.top().y - mClipStack.top().height,
+              mClipStack.top().width,
+              mClipStack.top().height);
+}
+
+void OpenGL1Graphics::setColor(const gcn::Color& color)
+{
+    mColor = color;
+    glColor4ub(static_cast<GLubyte>(color.r),
+               static_cast<GLubyte>(color.g),
+               static_cast<GLubyte>(color.b),
+               static_cast<GLubyte>(color.a));
+
+    mColorAlpha = (color.a != 255);
+}
+
+void OpenGL1Graphics::drawPoint(int x, int y)
+{
+    setTexturingAndBlending(false);
+
+    glBegin(GL_POINTS);
+    glVertex2i(x, y);
+    glEnd();
+}
+
+void OpenGL1Graphics::drawLine(int x1, int y1, int x2, int y2)
+{
+    setTexturingAndBlending(false);
+
+    glBegin(GL_LINES);
+    glVertex2f(x1 + 0.5f, y1 + 0.5f);
+    glVertex2f(x2 + 0.5f, y2 + 0.5f);
+    glEnd();
+
+    glBegin(GL_POINTS);
+    glVertex2f(x2 + 0.5f, y2 + 0.5f);
+    glEnd();
+}
+
+void OpenGL1Graphics::drawRectangle(const gcn::Rectangle& rect)
+{
+    drawRectangle(rect, false);
+}
+
+void OpenGL1Graphics::fillRectangle(const gcn::Rectangle& rect)
+{
+    drawRectangle(rect, true);
+}
+
+void OpenGL1Graphics::setTargetPlane(int width _UNUSED_, int height _UNUSED_)
+{
+}
+
+void OpenGL1Graphics::setTexturingAndBlending(bool enable)
+{
+    if (enable)
+    {
+        if (!mTexture)
+        {
+            glEnable(Image::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(Image::mTextureType);
+            mTexture = false;
+        }
+    }
+}
+
+void OpenGL1Graphics::drawRectangle(const gcn::Rectangle& rect, bool filled)
+{
+    const float offset = filled ? 0 : 0.5f;
+
+    setTexturingAndBlending(false);
+
+    glBegin(filled ? GL_QUADS : GL_LINE_LOOP);
+    glVertex2f(rect.x + offset, rect.y + offset);
+    glVertex2f(rect.x + rect.width - offset, rect.y + offset);
+    glVertex2f(rect.x + rect.width - offset, rect.y + rect.height - offset);
+    glVertex2f(rect.x + offset, rect.y + rect.height - offset);
+    glEnd();
+}
+
+void OpenGL1Graphics::bindTexture(GLenum target, GLuint texture)
+{
+    if (mLastImage != texture)
+    {
+        mLastImage = texture;
+        glBindTexture(target, texture);
+    }
+}
+
+#endif // USE_OPENGL