polycode-engine/Core/Contents/Source/PolyGLTexture.cpp

/*
 *  PolyGLTexture.cpp
 *  Poly
 *
 *  Created by Ivan Safrin on 3/16/08.
 *  Copyright 2008 __MyCompanyName__. All rights reserved.
 *
 */


#include "PolyGLTexture.h"

using namespace Polycode;

OpenGLTexture::OpenGLTexture(unsigned int width, unsigned int height, char *textureData, bool clamp, int filteringMode, int type) : Texture(width, height, textureData,clamp, type) {
	this->filteringMode = filteringMode;
	glTextureLoaded = false;
	
	glTextureType = GL_RGBA;
	if(type == Image::IMAGE_RGB) {
		glTextureType = GL_RGB;		
	} 
	
	recreateFromImageData();
}

void OpenGLTexture::recreateFromImageData() {
	
	if(glTextureLoaded)
		glDeleteTextures(1, &textureID);
	
	glGenTextures(1, &textureID);
	glBindTexture(GL_TEXTURE_2D, textureID);
	if(clamp) {
		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
	} else {
		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);	
	}
	switch(filteringMode) {
		case Renderer::TEX_FILTERING_LINEAR:
			glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
			glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
			break;
		case Renderer::TEX_FILTERING_NEAREST:
			glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
			glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);		
			break;
	}	
	
	if(textureData) {
		glTexImage2D(GL_TEXTURE_2D, 0, glTextureType, width, height, 0, glTextureType, GL_UNSIGNED_BYTE, textureData);							
	}
	glTextureLoaded = true;
}

OpenGLTexture::OpenGLTexture(unsigned int width, unsigned int height) : Texture(width, height, NULL ,true) {

}

void OpenGLTexture::setGLInfo(GLuint textureID, GLuint frameBufferID) {
	this->textureID = textureID;
	this->frameBufferID = frameBufferID;
}

void OpenGLTexture::setTextureData(char *data) {
	glBindTexture(GL_TEXTURE_2D, textureID);
	glDrawBuffer(GL_AUX0);
	glDrawPixels(width, height, glTextureType, GL_UNSIGNED_BYTE, data);
	glReadBuffer(GL_AUX0);
//	glCopyTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 0, 0, 128, 128, 0);
}

OpenGLTexture::~OpenGLTexture() {
	glDeleteTextures(1, &textureID);
}

GLuint OpenGLTexture::getFrameBufferID() {
	return frameBufferID;
}

GLuint OpenGLTexture::getTextureID() {
	return textureID;
}