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Improves OpenGL-ES support (especially for Raspberry Pi), contribution of Erkki Nokso-Koivisto (with small changes), converts ABGR to RGBA only if the extension GL_EXT_abgr is not supported

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git-svn-id: https://jmonkeyengine.googlecode.com/svn/trunk@10440 75d07b2b-3a1a-0410-a2c5-0572b91ccdca
This commit is contained in:
jul..om 2013-02-26 20:00:03 +00:00
parent 39b75a4aa6
commit ce31958ece
1 changed files with 26 additions and 2 deletions
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28
engine/src/jogl/com/jme3/renderer/jogl/TextureUtil.java
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@ -43,6 +43,8 @@ import javax.media.opengl.GL2GL3;
import javax.media.opengl.GLContext;
public class TextureUtil {
private static boolean abgrToRgbaConversionEnabled = false;
public static int convertTextureFormat(Format fmt) {
switch (fmt) {
@ -157,8 +159,9 @@ public class TextureUtil {
GL gl = GLContext.getCurrentGL();
switch (fmt){
case ABGR8:
if (!gl.isExtensionAvailable("GL_EXT_abgr")){
return null;
if (!gl.isExtensionAvailable("GL_EXT_abgr") && !abgrToRgbaConversionEnabled) {
setFormat(Format.ABGR8, GL.GL_RGBA, GL.GL_RGBA, GL.GL_UNSIGNED_BYTE, false);
abgrToRgbaConversionEnabled = true;
}
break;
case BGR8:
@ -257,6 +260,9 @@ public class TextureUtil {
int depth = image.getDepth();
if (data != null) {
if (abgrToRgbaConversionEnabled) {
convertABGRtoRGBA(data);
}
gl.glPixelStorei(GL.GL_UNPACK_ALIGNMENT, 1);
}
@ -385,4 +391,22 @@ public class TextureUtil {
pos += mipSizes[i];
}
}
private static void convertABGRtoRGBA(ByteBuffer buffer) {
for (int i = 0; i < buffer.capacity(); i++) {
int a = buffer.get(i++);
int b = buffer.get(i++);
int g = buffer.get(i++);
int r = buffer.get(i);
buffer.put(i - 3, (byte) r);
buffer.put(i - 2, (byte) g);
buffer.put(i - 1, (byte) b);
buffer.put(i, (byte) a);
}
}
}