Mercurial > fife-parpg
view ext/guichan-0.8.2/src/opengl/openglimage.cpp @ 589:d1df6cf5ff23
* Fixed a bug in RenderBackendSDL, the clip area was not properly set.
* Renamed the backquad and border commands of the FloatingTextRenderer.
* Added the TransparentArea commands to the InstanceRenderer.
Note: with addTransparentArea(instance, string, width, height, transparent, front) you can enable an area, that make all instances in this zone and with the same namespace transparent. The string is for the namespace, so you can set one or more namespaces to be transparent. Width and height specifies the size of the area. Transparent defines the intensity of transparency, 255 = invisible. The bool front, enable or disable the z check, so that only instances in front of the source instance could be transparent.
| author | helios2000@33b003aa-7bff-0310-803a-e67f0ece8222 |
|---|---|
| date | Fri, 13 Aug 2010 16:33:36 +0000 (2010-08-13) |
| parents | 64738befdf3b |
| children |
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/* _______ __ __ __ ______ __ __ _______ __ __ * / _____/\ / /\ / /\ / /\ / ____/\ / /\ / /\ / ___ /\ / |\/ /\ * / /\____\// / // / // / // /\___\// /_// / // /\_/ / // , |/ / / * / / /__ / / // / // / // / / / ___ / // ___ / // /| ' / / * / /_// /\ / /_// / // / // /_/_ / / // / // /\_/ / // / | / / * /______/ //______/ //_/ //_____/\ /_/ //_/ //_/ //_/ //_/ /|_/ / * \______\/ \______\/ \_\/ \_____\/ \_\/ \_\/ \_\/ \_\/ \_\/ \_\/ * * Copyright (c) 2004 - 2008 Olof Naess�n and Per Larsson * * * Per Larsson a.k.a finalman * Olof Naess�n a.k.a jansem/yakslem * * Visit: http://guichan.sourceforge.net * * License: (BSD) * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * 3. Neither the name of Guichan nor the names of its contributors may * be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ /* * For comments regarding functions please see the header file. */ #include "guichan/opengl/openglimage.hpp" #include "guichan/exception.hpp" namespace gcn { OpenGLImage::OpenGLImage(const unsigned int* pixels, int width, int height, bool convertToDisplayFormat) { mAutoFree = true; mWidth = width; mHeight = height; mTextureWidth = 1, mTextureHeight = 1; while(mTextureWidth < mWidth) { mTextureWidth *= 2; } while(mTextureHeight < mHeight) { mTextureHeight *= 2; } // Create a new pixel array and copy the pixels into it mPixels = new unsigned int[mTextureWidth * mTextureHeight]; #ifdef __BIG_ENDIAN__ const unsigned int magicPink = 0xff00ffff; #else const unsigned int magicPink = 0xffff00ff; #endif int x, y; for (y = 0; y < mTextureHeight; y++) { for (x = 0; x < mTextureWidth; x++) { if (x < mWidth && y < mHeight) { unsigned int c = pixels[x + y * mWidth]; // Magic pink to transparent if (c == magicPink) { c = 0x00000000; } mPixels[x + y * mTextureWidth] = c; } else { mPixels[x + y * mTextureWidth] = 0x00000000; } } } if (convertToDisplayFormat) { OpenGLImage::convertToDisplayFormat(); } } OpenGLImage::OpenGLImage(GLuint textureHandle, int width, int height, bool autoFree) { mTextureHandle = textureHandle; mAutoFree = autoFree; mPixels = NULL; mWidth = width; mHeight = height; mTextureWidth = 1, mTextureHeight = 1; while(mTextureWidth < mWidth) { mTextureWidth *= 2; } while(mTextureHeight < mHeight) { mTextureHeight *= 2; } } OpenGLImage::~OpenGLImage() { if (mAutoFree) { free(); } } GLuint OpenGLImage::getTextureHandle() const { return mTextureHandle; } int OpenGLImage::getTextureWidth() const { return mTextureWidth; } int OpenGLImage::getTextureHeight() const { return mTextureHeight; } void OpenGLImage::free() { if (mPixels == NULL) { glDeleteTextures(1, &mTextureHandle); } else { delete[] mPixels; mPixels = NULL; } } int OpenGLImage::getWidth() const { return mWidth; } int OpenGLImage::getHeight() const { return mHeight; } Color OpenGLImage::getPixel(int x, int y) { if (mPixels == NULL) { throw GCN_EXCEPTION("Image has been converted to display format"); } if (x < 0 || x >= mWidth || y < 0 || y >= mHeight) { throw GCN_EXCEPTION("Coordinates outside of the image"); } unsigned int c = mPixels[x + y * mTextureWidth]; #ifdef __BIG_ENDIAN__ unsigned char r = (unsigned char) ((c >> 24) & 0xff); unsigned char g = (unsigned char) ((c >> 16) & 0xff); unsigned char b = (unsigned char) ((c >> 8) & 0xff); unsigned char a = (unsigned char) (c & 0xff); #else unsigned char a = (unsigned char) ((c >> 24) & 0xff); unsigned char b = (unsigned char) ((c >> 16) & 0xff); unsigned char g = (unsigned char) ((c >> 8) & 0xff); unsigned char r = (unsigned char) (c & 0xff); #endif return Color(r, g, b, a); } void OpenGLImage::putPixel(int x, int y, const Color& color) { if (mPixels == NULL) { throw GCN_EXCEPTION("Image has been converted to display format"); } if (x < 0 || x >= mWidth || y < 0 || y >= mHeight) { throw GCN_EXCEPTION("Coordinates outside of the image"); } #ifdef __BIG_ENDIAN__ unsigned int c = color.a | color.b << 8 | color.g << 16 | color.r << 24; #else unsigned int c = color.r | color.g << 8 | color.b << 16 | color.a << 24; #endif mPixels[x + y * mTextureWidth] = c; } void OpenGLImage::convertToDisplayFormat() { if (mPixels == NULL) { throw GCN_EXCEPTION("Image has already been converted to display format"); } glGenTextures(1, &mTextureHandle); glBindTexture(GL_TEXTURE_2D, mTextureHandle); glTexImage2D(GL_TEXTURE_2D, 0, 4, mTextureWidth, mTextureHeight, 0, GL_RGBA, GL_UNSIGNED_BYTE, mPixels); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); delete[] mPixels; mPixels = NULL; GLenum error = glGetError(); if (error) { std::string errmsg; 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; } throw GCN_EXCEPTION(std::string("Unable to convert to OpenGL display format, glGetError said: ") + errmsg); } } }