void Texture::updateData(const void* pixels)
{
if (0 == textureId || NULL == pixels) return;
enablePalette();
storePixelData(pixels);
disablePalette();
}
void Texture::bind()
{
glBindTexture(GL_TEXTURE_2D, textureId);
if (filtering)
{
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
}
else
{
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
}
enablePalette();
}
void PagePalette::Rebuild()
{
rebuildMasters();
rebuildPages();
enablePalette(m_view != 0);
}
bool Texture::create(int width, int height, int bitsPerPixel, const void* pixels, SDL_Color* palette, int paletteSize)
{
this->width = width;
this->height = height;
this->bitsPerPixel = bitsPerPixel;
this->pitch = (width * bitsPerPixel) / 8;
this->size = height * pitch;
internalFormat = 0;
format = 0;
bool usePalette = true;
switch (bitsPerPixel)
{
case 32:
internalFormat = GL_RGBA;
format = GL_RGBA;
break;
case 24:
internalFormat = GL_RGB;
format = GL_RGB;
break;
case 8:
if (usePalette)
{
#ifndef HAVE_GLES
internalFormat = GL_RGB;
format = GL_COLOR_INDEX;
#else
internalFormat = GL_PALETTE8_RGB8_OES;
format = 0;
#endif
}
else
{
internalFormat = 1;
format = GL_LUMINANCE;
}
break;
default:
return false;
}
textureId = 0;
glGenTextures(1, &textureId);
glBindTexture(GL_TEXTURE_2D, textureId);
glTexParameteri(GL_TEXTURE_2D, GL_GENERATE_MIPMAP, GL_FALSE);
//glTexParameteri(GL_TEXTURE_2D, GL_GENERATE_MIPMAP, GL_TRUE);
//glHint(GL_GENERATE_MIPMAP_HINT, GL_NICEST);
if (8 == bitsPerPixel && usePalette)
{
this->paletteSize = paletteSize;
if (this->paletteSize < 256) this->paletteSize = 256;
paletteRed = new float[this->paletteSize];
paletteGreen = new float[this->paletteSize];
paletteBlue = new float[this->paletteSize];
for (int i=0; i<paletteSize; i++)
{
paletteRed[i] = (float) palette[i].r / 256.0f;
paletteGreen[i] = (float) palette[i].g / 256.0f;
paletteBlue[i] = (float) palette[i].b / 256.0f;
}
enablePalette();
}
if (NULL != pixels)
{
storePixelData(pixels);
}
glBindTexture(GL_TEXTURE_2D, 0);
disablePalette();
return true;
}