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GLRenderer: resize images to POT if needed

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E.g. when using NPOT textures on iOS with mipmapping.
This commit is contained in:
Kirill Vainer 2015-05-02 15:57:10 -04:00
parent 4aa32cd016
commit ed61979825
1 changed files with 33 additions and 10 deletions
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43
jme3-core/src/main/java/com/jme3/renderer/opengl/GLRenderer.java
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@ -54,6 +54,7 @@ import com.jme3.texture.Texture;
import com.jme3.texture.Texture.WrapAxis;
import com.jme3.util.BufferUtils;
import com.jme3.util.ListMap;
import com.jme3.util.MipMapGenerator;
import com.jme3.util.NativeObjectManager;
import java.nio.*;
import java.util.Arrays;
@ -1428,7 +1429,7 @@ public class GLRenderer implements Renderer {
// Check NPOT requirements
checkNonPowerOfTwo(tex);
updateTexImageData(image, tex.getType(), 0);
updateTexImageData(image, tex.getType(), 0, false);
// NOTE: For depth textures, sets nearest/no-mips mode
// Required to fix "framebuffer unsupported"
@ -1965,8 +1966,10 @@ public class GLRenderer implements Renderer {
* @param img The image to upload
* @param type How the data in the image argument should be interpreted.
* @param unit The texture slot to be used to upload the image, not important
* @param scaleToPot If true, the image will be scaled to power-of-2 dimensions
* before being uploaded.
*/
public void updateTexImageData(Image img, Texture.Type type, int unit) {
public void updateTexImageData(Image img, Texture.Type type, int unit, boolean scaleToPot) {
int texId = img.getId();
if (texId == -1) {
// create texture
@ -2050,33 +2053,39 @@ public class GLRenderer implements Renderer {
}
}
Image imageForUpload;
if (scaleToPot) {
imageForUpload = MipMapGenerator.resizeToPowerOf2(img);
} else {
imageForUpload = img;
}
if (target == GL.GL_TEXTURE_CUBE_MAP) {
List<ByteBuffer> data = img.getData();
List<ByteBuffer> data = imageForUpload.getData();
if (data.size() != 6) {
logger.log(Level.WARNING, "Invalid texture: {0}\n"
+ "Cubemap textures must contain 6 data units.", img);
return;
}
for (int i = 0; i < 6; i++) {
texUtil.uploadTexture(img, GL.GL_TEXTURE_CUBE_MAP_POSITIVE_X + i, i, linearizeSrgbImages);
texUtil.uploadTexture(imageForUpload, GL.GL_TEXTURE_CUBE_MAP_POSITIVE_X + i, i, linearizeSrgbImages);
}
} else if (target == GLExt.GL_TEXTURE_2D_ARRAY_EXT) {
if (!caps.contains(Caps.TextureArray)) {
throw new RendererException("Texture arrays not supported by graphics hardware");
}
List<ByteBuffer> data = img.getData();
List<ByteBuffer> data = imageForUpload.getData();
// -1 index specifies prepare data for 2D Array
texUtil.uploadTexture(img, target, -1, linearizeSrgbImages);
texUtil.uploadTexture(imageForUpload, target, -1, linearizeSrgbImages);
for (int i = 0; i < data.size(); i++) {
// upload each slice of 2D array in turn
// this time with the appropriate index
texUtil.uploadTexture(img, target, i, linearizeSrgbImages);
texUtil.uploadTexture(imageForUpload, target, i, linearizeSrgbImages);
}
} else {
texUtil.uploadTexture(img, target, 0, linearizeSrgbImages);
texUtil.uploadTexture(imageForUpload, target, 0, linearizeSrgbImages);
}
if (img.getMultiSamples() != imageSamples) {
@ -2097,9 +2106,23 @@ public class GLRenderer implements Renderer {
Image image = tex.getImage();
if (image.isUpdateNeeded() || (image.isGeneratedMipmapsRequired() && !image.isMipmapsGenerated())) {
// Check NPOT requirements
checkNonPowerOfTwo(tex);
boolean scaleToPot = false;
updateTexImageData(image, tex.getType(), unit);
try {
checkNonPowerOfTwo(tex);
} catch (RendererException ex) {
if (logger.isLoggable(Level.WARNING)) {
int nextWidth = FastMath.nearestPowerOfTwo(tex.getImage().getWidth());
int nextHeight = FastMath.nearestPowerOfTwo(tex.getImage().getHeight());
logger.log(Level.WARNING,
"Non-power-of-2 textures are not supported! Scaling texture '" + tex.getName() +
"' of size " + tex.getImage().getWidth() + "x" + tex.getImage().getHeight() +
" to " + nextWidth + "x" + nextHeight);
}
scaleToPot = true;
}
updateTexImageData(image, tex.getType(), unit, scaleToPot);
}
int texId = image.getId();