OSStatus VisualTextureContainer::initWithFramebuffer(UInt32 xPos, UInt32 yPos, UInt32 width, UInt32 height) { VisualGraphics* theVisualGraphics = VisualGraphics::getInstance(); this->releaseTextureData(); this->textureName = theVisualGraphics->getNextFreeTextureName(); this->textureIsSet = true; VisualTextureContainer::textureRefCountMap[this->textureName] = 1; this->useRectExtension = theVisualGraphics->canUseTextureRectExtension(); int prevReadBuffer = theVisualGraphics->getCurrentColorBufferForPixelReadingOperations(); theVisualGraphics->setColorBufferForPixelReadingOperations(kGL_BACK_COLOR_BUFFER); int prevDrawBuffer = theVisualGraphics->getCurrentColorBufferForPixelDrawingOperations(); theVisualGraphics->setColorBufferForPixelDrawingOperations(kGL_BACK_COLOR_BUFFER); theVisualGraphics->enableTexturing(this->useRectExtension); theVisualGraphics->copyFramebufferToTexture(this->textureName, this->useRectExtension, xPos, yPos, width, height, this->pixelFormat, this->dataType); theVisualGraphics->disableTexturing(this->useRectExtension); theVisualGraphics->setColorBufferForPixelDrawingOperations(prevDrawBuffer); theVisualGraphics->setColorBufferForPixelReadingOperations(prevReadBuffer); return noErr; }
bool VisualTextureContainer::initWithFramebuffer(const BottomLeftPositionedPixelRect& clipRect) { bool success = true; uint16 dataType; uint16 pixelFormat = kGL_BGRA; // BGRA on intel machines and ARGB on ppc #if TARGET_OS_WIN dataType = kGL_UNSIGNED_BYTE; #else #if __BIG_ENDIAN__ dataType = kGL_UNSIGNED_INT_8_8_8_8_REV; #else dataType = kGL_UNSIGNED_INT_8_8_8_8; #endif #endif VisualGraphics* theVisualGraphics = VisualGraphics::getInstance(); this->releaseTextureData(); this->textureName = theVisualGraphics->getNextFreeTextureName(); this->aTextureIsSet = true; VisualTextureContainer::textureRefCountMap[this->textureName] = 1; this->useRectExtension = theVisualGraphics->canUseTextureRectExtension(); int prevReadBuffer = theVisualGraphics->getCurrentColorBufferForPixelReadingOperations(); theVisualGraphics->setColorBufferForPixelReadingOperations(kGL_BACK_COLOR_BUFFER); int prevDrawBuffer = theVisualGraphics->getCurrentColorBufferForPixelDrawingOperations(); theVisualGraphics->setColorBufferForPixelDrawingOperations(kGL_BACK_COLOR_BUFFER); theVisualGraphics->enableTexturing(this->useRectExtension); theVisualGraphics->copyFramebufferToTexture(this->textureName, this->useRectExtension, clipRect, pixelFormat, dataType); theVisualGraphics->disableTexturing(this->useRectExtension); theVisualGraphics->setColorBufferForPixelDrawingOperations(prevDrawBuffer); theVisualGraphics->setColorBufferForPixelReadingOperations(prevReadBuffer); this->imageRect.width = clipRect.pixelRect.width; this->imageRect.height = clipRect.pixelRect.height; this->useRectExtension = theVisualGraphics->canUseTextureRectExtension(); if (this->useRectExtension == false) { this->textureRect.width = theVisualGraphics->power2Ceiling(this->imageRect.width); this->textureRect.height = theVisualGraphics->power2Ceiling(this->imageRect.height); } else { this->textureRect.width = this->imageRect.width; this->textureRect.height = this->imageRect.height; } return success; }
void VisualTextureContainer::applyConvolutionFilter(const VisualConvolutionFilter& aConvolutionFilter) { VisualGraphics* theVisualGraphics = VisualGraphics::getInstance(); uint16 dataType; uint16 pixelFormat = kGL_BGRA; // BGRA on intel machines and ARGB on ppc #if TARGET_OS_WIN dataType = kGL_UNSIGNED_BYTE; #else #if __BIG_ENDIAN__ dataType = kGL_UNSIGNED_INT_8_8_8_8_REV; #else dataType = kGL_UNSIGNED_INT_8_8_8_8; #endif #endif if (theVisualGraphics->doesSupportGLConvolutionFilter()) { int prevReadBuffer = theVisualGraphics->getCurrentColorBufferForPixelReadingOperations(); theVisualGraphics->setColorBufferForPixelReadingOperations(kGL_BACK_COLOR_BUFFER); int prevDrawBuffer = theVisualGraphics->getCurrentColorBufferForPixelDrawingOperations(); theVisualGraphics->setColorBufferForPixelDrawingOperations(kGL_BACK_COLOR_BUFFER); uint32* prevPixels = NULL; char errStr[512]; uint8 numberOfBytesPerChannel = 0; uint8 numberOfChannels = 0; // channel == color resp. alpha channel uint8 numberOfBytesPerPixel = 0; uint32 numberOfBytesPerRow = 0; if ((pixelFormat == kGL_RGBA) || (pixelFormat == kGL_BGRA)) { numberOfChannels = 4; } else { sprintf(errStr, "unknown format %d in file: %s (line: %d) [%s])", pixelFormat, __FILE__, __LINE__, __FUNCTION__); writeLog(errStr); return; } if ((dataType == kGL_UNSIGNED_INT_8_8_8_8_REV) || (dataType == kGL_UNSIGNED_INT_8_8_8_8) || (dataType == kGL_UNSIGNED_BYTE)) { numberOfBytesPerChannel = 1; // // 1 byte (== 8 bits) per color/channel } else { sprintf(errStr, "unknown type %d in file: %s (line: %d) [%s])", dataType, __FILE__, __LINE__, __FUNCTION__); writeLog(errStr); return; } numberOfBytesPerPixel = numberOfBytesPerChannel * numberOfChannels; numberOfBytesPerRow = numberOfBytesPerPixel * this->textureRect.width; // read previous pixels if ((pixelFormat == kGL_RGBA) || (pixelFormat == kGL_BGRA)) { prevPixels = (uint32*)calloc((numberOfBytesPerRow / numberOfBytesPerPixel) * this->textureRect.height, numberOfBytesPerPixel); } VisualCamera aCamera; aCamera.setOrthographicProjection(); theVisualGraphics->readPixels(aCamera.getMaxLeftCoord(), aCamera.getMaxBottomCoord(), this->textureRect.width, this->textureRect.height, &prevPixels, pixelFormat, dataType, aCamera); PixelColor* pixels = NULL; pixels = this->createARGBImagePixels(); if (pixels == NULL) { sprintf(errStr, "pixels == NULL in file: %s (line: %d) [%s])", __FILE__, __LINE__, __FUNCTION__); writeLog(errStr); return; } theVisualGraphics->drawPixels(&pixels, aCamera.getMaxLeftCoord(), aCamera.getMaxBottomCoord(), this->imageRect.width, this->imageRect.height, pixelFormat, dataType, &aConvolutionFilter); free(pixels); pixels = NULL; BottomLeftPositionedPixelRect clipRect; clipRect.bottomLeftPixel.x = 0; clipRect.bottomLeftPixel.y = 0; clipRect.pixelRect.width = this->textureRect.width; clipRect.pixelRect.height = this->textureRect.height; theVisualGraphics->enableTexturing(this->useRectExtension); theVisualGraphics->copyFramebufferToTexture(this->textureName, this->useRectExtension, clipRect, pixelFormat, dataType); theVisualGraphics->disableTexturing(this->useRectExtension); // restore previous pixels theVisualGraphics->drawPixels(&prevPixels, aCamera.getMaxLeftCoord(), aCamera.getMaxBottomCoord(), this->textureRect.width, this->textureRect.height, pixelFormat, dataType); free(prevPixels); theVisualGraphics->setColorBufferForPixelDrawingOperations(prevDrawBuffer); theVisualGraphics->setColorBufferForPixelReadingOperations(prevReadBuffer); } else { PixelColor* pixels = this->createARGBImagePixels(); PixelColor* filteredPixels = NULL; aConvolutionFilter.applyToPixelData(pixels, this->imageRect.width, this->imageRect.height, pixelFormat, dataType, &filteredPixels); free(pixels); pixels = NULL; bool success = false; const PixelColor* constFilteredPixels = const_cast<const PixelColor*>(filteredPixels); success = theVisualGraphics->copyARGBBitmapDataToTexture(this->textureName, this->imageRect.width, this->imageRect.height, this->useRectExtension, &constFilteredPixels); if (filteredPixels != NULL) { free(filteredPixels); } } }
void VisualTextureContainer::applyConvolutionFilter(const VisualConvolutionFilter& aConvolutionFilter) { VisualGraphics* theVisualGraphics = VisualGraphics::getInstance(); int prevReadBuffer = theVisualGraphics->getCurrentColorBufferForPixelReadingOperations(); theVisualGraphics->setColorBufferForPixelReadingOperations(kGL_BACK_COLOR_BUFFER); int prevDrawBuffer = theVisualGraphics->getCurrentColorBufferForPixelDrawingOperations(); theVisualGraphics->setColorBufferForPixelDrawingOperations(kGL_BACK_COLOR_BUFFER); UInt32* prevPixels = NULL; char errStr[512]; UInt8 numberOfBytesPerChannel = 0; UInt8 numberOfChannels = 0; // channel == color resp. alpha channel UInt8 numberOfBytesPerPixel = 0; UInt32 numberOfBytesPerRow = 0; if ((this->pixelFormat == kGL_RGBA) || (this->pixelFormat == kGL_BGRA)) { numberOfChannels = 4; } else { sprintf(errStr, "unknown format %d in file: %s (line: %d) [%s])", this->pixelFormat, __FILE__, __LINE__, __FUNCTION__); writeLog(errStr); return; } if ((this->dataType == kGL_UNSIGNED_INT_8_8_8_8_REV) || (this->dataType == kGL_UNSIGNED_INT_8_8_8_8) || (this->dataType == kGL_UNSIGNED_BYTE)) { numberOfBytesPerChannel = 1; // // 1 byte (== 8 bits) per color/channel } else { sprintf(errStr, "unknown type %d in file: %s (line: %d) [%s])", this->dataType, __FILE__, __LINE__, __FUNCTION__); writeLog(errStr); return; } numberOfBytesPerPixel = numberOfBytesPerChannel * numberOfChannels; numberOfBytesPerRow = numberOfBytesPerPixel * this->textureWidth; // read previous pixels if ((this->pixelFormat == kGL_RGBA) || (this->pixelFormat == kGL_BGRA)) { prevPixels = (UInt32*)calloc((numberOfBytesPerRow / numberOfBytesPerPixel) * this->textureHeight, numberOfBytesPerPixel); } theVisualGraphics->readPixels(theVisualGraphics->getMaxLeftCoordOfCanvas(), theVisualGraphics->getMaxBottomCoordOfCanvas(), this->textureWidth, this->textureHeight, &prevPixels, this->pixelFormat, this->dataType); UInt32* pixels = this->getTexturePixels(this->pixelFormat, this->dataType); UInt32* passedPixels = (UInt32*)malloc(this->textureWidth * this->textureHeight * 4); memcpy(passedPixels, pixels, this->textureWidth * this->textureHeight * 4); // VisualStudio does not like when we pass a non-const pointer to instance variable (crashes in runtime) theVisualGraphics->drawPixels((UInt32**)&(passedPixels), theVisualGraphics->getMaxLeftCoordOfCanvas(), theVisualGraphics->getMaxBottomCoordOfCanvas(), this->textureWidth, this->textureHeight, this->pixelFormat, this->dataType, &aConvolutionFilter); if (passedPixels != NULL) { free(passedPixels); passedPixels = NULL; } theVisualGraphics->copyFramebufferToTexture(this->textureName, this->useRectExtension, 0, 0, this->textureWidth, this->textureHeight, this->pixelFormat, this->dataType); // restore previous pixels theVisualGraphics->drawPixels(&prevPixels, theVisualGraphics->getMaxLeftCoordOfCanvas(), theVisualGraphics->getMaxBottomCoordOfCanvas(), this->textureWidth, this->textureHeight, this->pixelFormat, this->dataType); free(prevPixels); theVisualGraphics->setColorBufferForPixelDrawingOperations(prevDrawBuffer); theVisualGraphics->setColorBufferForPixelReadingOperations(prevReadBuffer); if (this->pixelBuffer != NULL) { free(this->pixelBuffer); this->pixelBuffer = NULL; } }