confused

Started by glGreenhorn January 10, 2002 01:53 PM

0 comments, last by glGreenhorn 23 years, 1 month ago

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January 10, 2002 01:53 PM

hey, i have this little problem: i load a number of textures. the number of textures varies as it''s read from a file. so are the texture names. what i need to do is create an array of AUX_RGBImageRec * ''s as an array of pointers. what confuses me is the declaration syntax. so far i''ve come up with the following code: #define NUM_TEXTURES 1024 AUX_RGBImageRec * TextureImage[NUM_TEXTURES]; // 1) GLuint Texture[NUM_TEXTURES]; ///////// numTextures = 42; //e g this many textures are required to be loaded ///////// for(...) { TextureImage = new(AUX_RGBImageRec); // 2) } memset(TextureImage, 0, sizeof(void *) * numTextures); glGenTextures(numTextures, &Texture[0]); for(...) { //load all the files and create the textures } binding a texture from the list after it is loaded, however, doesn''t work as expected. i think it only loads one texture - i think it''s the first one only. my guess is something is wrong with the lines commented with 1) and 2)... how should i declare and allocate memory for an array of pointers to pointers to objects (AUX_RGBImageRec in this case)? thanks and keep cool !

Anonymous

January 10, 2002 05:19 PM

this is what i did

  int loadtextures(int number,char *Filename, char quality)									// Load Bitmaps And Convert To Textures{	int Status=FALSE;									// Status Indicator	AUX_RGBImageRec *TextureImage[1];					// Create Storage Space For The Texture	memset(TextureImage,0,sizeof(void *)*1);           	// Set The Pointer To NULL	if (TextureImage[0]=LoadBMP(Filename))	{		Status=TRUE;									// Set The Status To TRUE		glGenTextures(1, &text[number]);					// Create Three Textures	switch(quality)	{	case 1:		  {			// Create Nearest Filtered Texture			glBindTexture(GL_TEXTURE_2D, text[number]);			glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_NEAREST);			glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_NEAREST);			glTexImage2D(GL_TEXTURE_2D, 0, 3, TextureImage[0]->sizeX, TextureImage[0]->sizeY, 0, GL_RGB, GL_UNSIGNED_BYTE, TextureImage[0]->data);			break;		  }	case 2:		  {			// Create Linear Filtered Texture			glBindTexture(GL_TEXTURE_2D, text[number]);			glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR);			glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR);			glTexImage2D(GL_TEXTURE_2D, 0, 3, TextureImage[0]->sizeX, TextureImage[0]->sizeY, 0, GL_RGB, GL_UNSIGNED_BYTE, TextureImage[0]->data);			break;		  }	case 3:		{			// Create MipMapped Texture			glBindTexture(GL_TEXTURE_2D, text[number]);			glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR);			glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR_MIPMAP_NEAREST);			gluBuild2DMipmaps(GL_TEXTURE_2D, 3, TextureImage[0]->sizeX, TextureImage[0]->sizeY, GL_RGB, GL_UNSIGNED_BYTE, TextureImage[0]->data);			break;		}	}	}	if (TextureImage[0])								{		if (TextureImage[0]->data)							{			free(TextureImage[0]->data);					}		free(TextureImage[0]);							}	return Status;									}

confused

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confused

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