diff options
Diffstat (limited to 'src/jogl/classes')
3 files changed, 30 insertions, 13 deletions
diff --git a/src/jogl/classes/com/jogamp/opengl/util/GLDrawableUtil.java b/src/jogl/classes/com/jogamp/opengl/util/GLDrawableUtil.java index 8473a6e27..956693c4a 100644 --- a/src/jogl/classes/com/jogamp/opengl/util/GLDrawableUtil.java +++ b/src/jogl/classes/com/jogamp/opengl/util/GLDrawableUtil.java @@ -28,7 +28,6 @@ package com.jogamp.opengl.util; import javax.media.nativewindow.AbstractGraphicsDevice; - import javax.media.nativewindow.NativeSurface; import javax.media.opengl.GLAnimatorControl; import javax.media.opengl.GLAutoDrawable; @@ -158,23 +157,41 @@ public class GLDrawableUtil { * <ul> * <li>Switching between on- and offscreen and one of the following is <code>true</code>: * <ul> - * <li>{@link GLCapabilitiesImmutable#getSampleBuffers() MSAA is used}[1], or - * <li>{@link GLCapabilitiesImmutable#getStereo() Stereo is used} + * <li>{@link GLCapabilitiesImmutable#getSampleBuffers() MSAA is <i>used</i>} [1] in <code>chosenCapsA</code> or <code>chosenCapsB</code></li> + * <li>{@link GLCapabilitiesImmutable#getStereo() Stereo is <i>used</i>} in <code>chosenCapsA</code> or <code>chosenCapsB</code></li> + * <li>{@link GLCapabilitiesImmutable#getAccumAlphaBits() Accumulator Buffer is <i>requested</i>} [2] in <code>requestedCaps</code></li> * </ul></li> * </ul> * Otherwise method returns <code>true</code> * </p> - * <p> + * <pre> * [1] See Bug 830: swapGLContextAndAllGLEventListener and onscreen MSAA w/ NV/GLX - * </p> + * On NVidia GPUs w/ it's proprietary driver context swapping does not work if MSAA is involved + * and when swapping on- to offscreen. + * </pre> + * <pre> + * [2] On AMD GPUs w/ it's proprietary driver, requesting an accumulator buffer leads to receive an accumulator buffer configuration, + * for which context swapping does not work when swapping on- to offscreen and vice-versa, i.e. cannot make context current. + * With AMD and Mesa drivers we only receive an accumulator buffer if requested, + * where on NVidia drivers all configurations contain the accumulator buffer. + * On both drivers, NVidia and Mesa, context swapping with accumulator buffer works. + * </pre> + * @param requestedCaps requested {@link GLCapabilitiesImmutable} which are intended for usage by both {@link GLAutoDrawable}s A and B + * @param chosenCapsA chosen {@link GLCapabilitiesImmutable} of {@link GLAutoDrawable} A, which {@link GLContext} is intended to be swapped + * @param chosenCapsB chosen {@link GLCapabilitiesImmutable} of {@link GLAutoDrawable} B, which {@link GLContext} is intended to be swapped * @see #swapGLContext(GLAutoDrawable, GLAutoDrawable) * @see #swapGLContextAndAllGLEventListener(GLAutoDrawable, GLAutoDrawable) */ - public static boolean isSwapGLContextSafe(final GLCapabilitiesImmutable a, final GLCapabilitiesImmutable b) { - if( ( a.isOnscreen() && !b.isOnscreen() || !a.isOnscreen() && b.isOnscreen() ) && // switching between on- and offscreen + public static boolean isSwapGLContextSafe(final GLCapabilitiesImmutable requestedCaps, final GLCapabilitiesImmutable chosenCapsA, final GLCapabilitiesImmutable chosenCapsB) { + final boolean usingAccumulatorBuffer = requestedCaps.getAccumAlphaBits() > 0 || + requestedCaps.getAccumRedBits() > 0 || + requestedCaps.getAccumGreenBits() > 0 || + requestedCaps.getAccumBlueBits() > 0; + if( ( chosenCapsA.isOnscreen() && !chosenCapsB.isOnscreen() || !chosenCapsA.isOnscreen() && chosenCapsB.isOnscreen() ) && // switching between on- and offscreen ( - ( a.getSampleBuffers() || b.getSampleBuffers() ) || // MSAA involved - ( a.getStereo() || b.getStereo() ) // Stereo involved + ( chosenCapsA.getSampleBuffers() || chosenCapsB.getSampleBuffers() ) || // MSAA involved + ( chosenCapsA.getStereo() || chosenCapsB.getStereo() ) || // Stereo involved + usingAccumulatorBuffer // Using accumulator buffer ) ) { @@ -207,7 +224,7 @@ public class GLDrawableUtil { * e.g. via {@link Threading#invokeOnOpenGLThread(boolean, Runnable)}. * </p> * @throws GLException if the {@link AbstractGraphicsDevice} are incompatible w/ each other. - * @see #isSwapGLContextSafe(GLCapabilitiesImmutable, GLCapabilitiesImmutable) + * @see #isSwapGLContextSafe(GLCapabilitiesImmutable, GLCapabilitiesImmutable, GLCapabilitiesImmutable) */ public static final void swapGLContextAndAllGLEventListener(final GLAutoDrawable a, final GLAutoDrawable b) { final GLEventListenerState gllsA = GLEventListenerState.moveFrom(a, true); @@ -249,7 +266,7 @@ public class GLDrawableUtil { * </p> * @param a * @param b - * @see #isSwapGLContextSafe(GLCapabilitiesImmutable, GLCapabilitiesImmutable) + * @see #isSwapGLContextSafe(GLCapabilitiesImmutable, GLCapabilitiesImmutable, GLCapabilitiesImmutable) */ public static final void swapGLContext(final GLAutoDrawable a, final GLAutoDrawable b) { final GLAnimatorControl aAnim = a.getAnimator(); diff --git a/src/jogl/classes/javax/media/opengl/awt/GLCanvas.java b/src/jogl/classes/javax/media/opengl/awt/GLCanvas.java index 4bd4b2c35..0599c1086 100644 --- a/src/jogl/classes/javax/media/opengl/awt/GLCanvas.java +++ b/src/jogl/classes/javax/media/opengl/awt/GLCanvas.java @@ -875,7 +875,7 @@ public class GLCanvas extends Canvas implements AWTGLAutoDrawable, WindowClosing newGLADCaps.setSampleBuffers(0 < printNumSamples); newGLADCaps.setNumSamples(printNumSamples); } - final boolean reqNewGLADSafe = GLDrawableUtil.isSwapGLContextSafe(gladCaps, newGLADCaps); + final boolean reqNewGLADSafe = GLDrawableUtil.isSwapGLContextSafe(getRequestedGLCapabilities(), gladCaps, newGLADCaps); final boolean reqNewGLAD = ( reqNewGLADOnscrn || reqNewGLADSamples || reqNewGLADSize ) && reqNewGLADSafe; diff --git a/src/jogl/classes/javax/media/opengl/awt/GLJPanel.java b/src/jogl/classes/javax/media/opengl/awt/GLJPanel.java index 0c30945cc..6e6bb1cad 100644 --- a/src/jogl/classes/javax/media/opengl/awt/GLJPanel.java +++ b/src/jogl/classes/javax/media/opengl/awt/GLJPanel.java @@ -726,7 +726,7 @@ public class GLJPanel extends JPanel implements AWTGLAutoDrawable, WindowClosing newGLADCaps.setSampleBuffers(0 < printNumSamples); newGLADCaps.setNumSamples(printNumSamples); } - final boolean reqNewGLADSafe = GLDrawableUtil.isSwapGLContextSafe(gladCaps, newGLADCaps); + final boolean reqNewGLADSafe = GLDrawableUtil.isSwapGLContextSafe(getRequestedGLCapabilities(), gladCaps, newGLADCaps); final boolean reqNewGLAD = ( reqNewGLADSamples || reqNewGLADSize ) && reqNewGLADSafe; |