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axmol/cocos/renderer/CCTextureCube.cpp

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/****************************************************************************
Copyright (c) 2015-2017 Chukong Technologies Inc.
http://www.cocos2d-x.org
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
****************************************************************************/
#include "renderer/CCTextureCube.h"
#include "platform/CCImage.h"
#include "platform/CCFileUtils.h"
#include "renderer/ccGLStateCache.h"
NS_CC_BEGIN
unsigned char* getImageData(Image* img, Texture2D::PixelFormat& ePixFmt)
{
unsigned char* pTmpData = img->getData();
unsigned int* inPixel32 = nullptr;
unsigned char* inPixel8 = nullptr;
unsigned short* outPixel16 = nullptr;
bool bHasAlpha = img->hasAlpha();
size_t uBPP = img->getBitPerPixel();
int nWidth = img->getWidth();
int nHeight = img->getHeight();
// compute pixel format
if (bHasAlpha)
{
ePixFmt = Texture2D::PixelFormat::DEFAULT;
}
else
{
if (uBPP >= 8)
{
ePixFmt = Texture2D::PixelFormat::RGB888;
}
else
{
ePixFmt = Texture2D::PixelFormat::RGB565;
}
}
// Repack the pixel data into the right format
unsigned int uLen = nWidth * nHeight;
if (ePixFmt == Texture2D::PixelFormat::RGB565)
{
if (bHasAlpha)
{
// Convert "RRRRRRRRRGGGGGGGGBBBBBBBBAAAAAAAA" to "RRRRRGGGGGGBBBBB"
inPixel32 = (unsigned int*)img->getData();
pTmpData = new (std::nothrow) unsigned char[nWidth * nHeight * 2];
outPixel16 = (unsigned short*)pTmpData;
for (unsigned int i = 0; i < uLen; ++i, ++inPixel32)
{
*outPixel16++ =
((((*inPixel32 >> 0) & 0xFF) >> 3) << 11) | // R
((((*inPixel32 >> 8) & 0xFF) >> 2) << 5) | // G
((((*inPixel32 >> 16) & 0xFF) >> 3) << 0); // B
}
}
else
{
// Convert "RRRRRRRRGGGGGGGGBBBBBBBB" to "RRRRRGGGGGGBBBBB"
pTmpData = new (std::nothrow) unsigned char[nWidth * nHeight * 2];
outPixel16 = (unsigned short*)pTmpData;
inPixel8 = (unsigned char*)img->getData();
for (unsigned int i = 0; i < uLen; ++i)
{
unsigned char R = *inPixel8++;
unsigned char G = *inPixel8++;
unsigned char B = *inPixel8++;
*outPixel16++ =
((R >> 3) << 11) | // R
((G >> 2) << 5) | // G
((B >> 3) << 0); // B
}
}
}
if (bHasAlpha && ePixFmt == Texture2D::PixelFormat::RGB888)
{
// Convert "RRRRRRRRRGGGGGGGGBBBBBBBBAAAAAAAA" to "RRRRRRRRGGGGGGGGBBBBBBBB"
inPixel32 = (unsigned int*)img->getData();
pTmpData = new (std::nothrow) unsigned char[nWidth * nHeight * 3];
unsigned char* outPixel8 = pTmpData;
for (unsigned int i = 0; i < uLen; ++i, ++inPixel32)
{
*outPixel8++ = (*inPixel32 >> 0) & 0xFF; // R
*outPixel8++ = (*inPixel32 >> 8) & 0xFF; // G
*outPixel8++ = (*inPixel32 >> 16) & 0xFF; // B
}
}
return pTmpData;
}
Image* createImage(const std::string& path)
{
// Split up directory and filename
// MUTEX:
// Needed since addImageAsync calls this method from a different thread
std::string fullpath = FileUtils::getInstance()->fullPathForFilename(path);
if (fullpath.size() == 0)
{
return nullptr;
}
// all images are handled by UIImage except PVR extension that is handled by our own handler
Image* image = nullptr;
do
{
image = new (std::nothrow) Image();
CC_BREAK_IF(nullptr == image);
bool bRet = image->initWithImageFile(fullpath);
CC_BREAK_IF(!bRet);
}
while (0);
return image;
}
TextureCube::TextureCube()
{
_imgPath.resize(6);
}
TextureCube::~TextureCube()
{
}
TextureCube* TextureCube::create(const std::string& positive_x, const std::string& negative_x,
const std::string& positive_y, const std::string& negative_y,
const std::string& positive_z, const std::string& negative_z)
{
auto ret = new (std::nothrow) TextureCube();
if (ret && ret->init(positive_x, negative_x, positive_y, negative_y, positive_z, negative_z))
{
ret->autorelease();
return ret;
}
CC_SAFE_DELETE(ret);
return nullptr;
}
bool TextureCube::init(const std::string& positive_x, const std::string& negative_x,
const std::string& positive_y, const std::string& negative_y,
const std::string& positive_z, const std::string& negative_z)
{
_imgPath[0] = positive_x;
_imgPath[1] = negative_x;
_imgPath[2] = positive_y;
_imgPath[3] = negative_y;
_imgPath[4] = positive_z;
_imgPath[5] = negative_z;
std::vector<Image*> images(6);
images[0] = createImage(positive_x);
images[1] = createImage(negative_x);
images[2] = createImage(positive_y);
images[3] = createImage(negative_y);
images[4] = createImage(positive_z);
images[5] = createImage(negative_z);
GLuint handle;
glGenTextures(1, &handle);
GL::bindTextureN(0, handle, GL_TEXTURE_CUBE_MAP);
for (int i = 0; i < 6; i++)
{
Image* img = images[i];
Texture2D::PixelFormat ePixelFmt;
unsigned char* pData = getImageData(img, ePixelFmt);
if (ePixelFmt == Texture2D::PixelFormat::RGBA8888 || ePixelFmt == Texture2D::PixelFormat::DEFAULT)
{
glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X + i,
0, // level
GL_RGBA, // internal format
img->getWidth(), // width
img->getHeight(), // height
0, // border
GL_RGBA, // format
GL_UNSIGNED_BYTE, // type
pData); // pixel data
}
else if (ePixelFmt == Texture2D::PixelFormat::RGB888)
{
glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X + i,
0, // level
GL_RGB, // internal format
img->getWidth(), // width
img->getHeight(), // height
0, // border
GL_RGB, // format
GL_UNSIGNED_BYTE, // type
pData); // pixel data
}
if (pData != img->getData())
delete[] pData;
}
glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
_name = handle;
GL::bindTextureN(0, 0, GL_TEXTURE_CUBE_MAP);
for (auto img: images)
{
CC_SAFE_RELEASE(img);
}
return true;
}
void TextureCube::setTexParameters(const TexParams& texParams)
{
CCASSERT(_name != 0, __FUNCTION__);
GL::bindTextureN(0, _name, GL_TEXTURE_CUBE_MAP);
glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MIN_FILTER, texParams.minFilter);
glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MAG_FILTER, texParams.magFilter);
glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_S, texParams.wrapS);
glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_T, texParams.wrapT);
GL::bindTextureN(0, 0, GL_TEXTURE_CUBE_MAP);
}
bool TextureCube::reloadTexture()
{
return init(_imgPath[0], _imgPath[1], _imgPath[2], _imgPath[3], _imgPath[4], _imgPath[5]);
}
NS_CC_END
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