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我正在做OpenGL-ES的第一步。 Atm我可以在方形多邊形上加載兩個POT紋理,我可以在屏幕上旋轉和縮放。如果我嘗試加載非POT PNG,那麼紋理顯示爲白色。如何將POT圖像轉換爲POT位圖以在紋理上使用OpenGL?
我需要做一些技巧來將非POT紋理轉換爲POT位圖來填充我的方形多邊形的紋理。我怎樣才能將它們轉換成POT位圖?
這是實際的代碼我必須加載紋理:
從資產DIR:
String imagePath = "radiocd5.png";
AssetManager mngr = context.getAssets();
// Create an input stream to read from the asset folder
InputStream is=null;
try {
is = mngr.open(imagePath);
} catch (IOException e1) { e1.printStackTrace(); }
//Get the texture from the Android resource directory
InputStream is = context.getResources().openRawResource(R.drawable.radiocd5);
Bitmap bitmap = BitmapFactory.decodeStream(is);
//Use the Android GLUtils to specify a two-dimensional texture image from our bitmap
GLUtils.texImage2D(GL10.GL_TEXTURE_2D, 0, bitmap, 0);
FROM RES /繪製對象:
//Get the texture from the Android resource directory
InputStream is = context.getResources().openRawResource(R.drawable.radiocd5);
Bitmap bitmap = BitmapFactory.decodeStream(is);
//Use the Android GLUtils to specify a two-dimensional texture image from our bitmap
GLUtils.texImage2D(GL10.GL_TEXTURE_2D, 0, bitmap, 0);
關於白色的問題,你是否記得明確禁用使用非鍋紋理時的mip映射? – Tommy