UInt32* VisualTextureContainer::getTexturePixels(const UInt16 format, const UInt16 type) { bool debug = false; UInt8* pixelBuffer8Bit = NULL; char errStr[256]; VisualGraphics* theVisualGraphics = VisualGraphics::getInstance(); if (debug == true) { if (this->pixelBuffer != NULL) { free(this->pixelBuffer); this->pixelBuffer = NULL; } this->pixelBuffer = theVisualGraphics->createARGBCheckPixels(this->textureWidth, this->textureHeight); return this->pixelBuffer; } if ((debug == false) && (this->pixelBuffer != NULL)) { //return this->pixelBuffer; } UInt8 numberOfBytesPerChannel = 0; UInt8 numberOfChannels = 0; // channel == color resp. alpha channel UInt8 numberOfBytesPerPixel = 0; UInt32 numberOfBytesPerRow = 0; if ((format == kGL_RGBA) || (format == kGL_BGRA)) { numberOfChannels = 4; } else { sprintf(errStr, "unknown format %d in file: %s (line: %d) [%s])", format, __FILE__, __LINE__, __FUNCTION__); writeLog(errStr); return this->pixelBuffer; } if ((type == kGL_UNSIGNED_INT_8_8_8_8_REV) || (type == kGL_UNSIGNED_INT_8_8_8_8) || (type == kGL_UNSIGNED_BYTE)) { numberOfBytesPerChannel = 1; // 1 byte (== 8 bits) per color/channel } else { sprintf(errStr, "unknown type %d in file: %s (line: %d) [%s])", type, __FILE__, __LINE__, __FUNCTION__); writeLog(errStr); return this->pixelBuffer; } if (this->pixelBuffer != NULL) { free(this->pixelBuffer); this->pixelBuffer = NULL; } if (this->useRectExtension == false) { numberOfBytesPerPixel = numberOfBytesPerChannel * numberOfChannels; numberOfBytesPerRow = numberOfBytesPerPixel * this->textureWidth; if ((format == kGL_RGBA) || (format == kGL_BGRA)) { if ((type == kGL_UNSIGNED_INT_8_8_8_8_REV) || (type == kGL_UNSIGNED_INT_8_8_8_8)) { this->pixelBuffer = (UInt32*)calloc((numberOfBytesPerRow / numberOfBytesPerPixel) * this->textureHeight, numberOfBytesPerPixel); } else if (type == kGL_UNSIGNED_BYTE) { this->pixelBuffer = (UInt32*)calloc((numberOfBytesPerRow / numberOfBytesPerPixel) * this->textureHeight, numberOfBytesPerPixel); pixelBuffer8Bit = (UInt8*)malloc(this->textureWidth * this->textureHeight * 4); } } theVisualGraphics->enableTexturing(this->useRectExtension); theVisualGraphics->bindTexture(this->textureName, this->useRectExtension); theVisualGraphics->setPixelStorageParams(); if ((type == kGL_UNSIGNED_INT_8_8_8_8_REV) || (type == kGL_UNSIGNED_INT_8_8_8_8)) { theVisualGraphics->get32BitPixelsOfCurrentTexture(this->useRectExtension, format, type, &(this->pixelBuffer)); } else if (type == kGL_UNSIGNED_BYTE) { theVisualGraphics->get8BitPixelsOfCurrentTexture(this->useRectExtension, format, type, &pixelBuffer8Bit); } theVisualGraphics->disableTexturing(this->useRectExtension); } else { #if TARGET_OS_MAC // glGetTexImage() does not always reliably return the pixelBuffer // of npot (non-power-of-two, GL_TEXTURE_RECTANGLE_EXT) textures // because of inconsistencies with Nvidia's GeForce4 MX card (1.4.18) [only with some not all textures the pixel data was returned] // we grab the pixels with glReadPixels() // (HW, 20070208) this->pixelBuffer = this->getRectPixels(format, type); #endif } if (type == kGL_UNSIGNED_BYTE) { UInt32 b, g, r, a, color32bit; UInt32 pixelBufferIdx = 0; UInt32 pixelBuffer8BitIdx = 0; for (UInt32 i = 0; i < this->textureHeight; i++) { for (UInt32 k = 0; k < this->textureWidth; k++) { b = pixelBuffer8Bit[pixelBuffer8BitIdx + 0] << 24; g = pixelBuffer8Bit[pixelBuffer8BitIdx + 1] << 16; r = pixelBuffer8Bit[pixelBuffer8BitIdx + 2] << 8; a = pixelBuffer8Bit[pixelBuffer8BitIdx + 3]; color32bit = b | g | r | a; this->pixelBuffer[pixelBufferIdx] = color32bit; pixelBufferIdx++; pixelBuffer8BitIdx += 4; } } free(pixelBuffer8Bit); } return this->pixelBuffer; }
UInt32* createCheckPixels(UInt32 width, UInt32 height) { VisualGraphics* theVisualGraphics = VisualGraphics::getInstance(); return theVisualGraphics->createARGBCheckPixels(width, height); }