From 2ee2b7b51e3e82553e7dc17fe1a04e8cec5be8bf Mon Sep 17 00:00:00 2001
From: Kenneth Russel <kbrussel@alum.mit.edu>
Date: Tue, 20 Apr 2004 00:54:26 +0000
Subject: Added full-scene antialiasing (FSAA) support
git-svn-id: file:///usr/local/projects/SUN/JOGL/git-svn/svn-server-sync/jogl/trunk@111 232f8b59-042b-4e1e-8c03-345bb8c30851
---
.../games/jogl/impl/x11/X11GLContextFactory.java | 34 ++++++++++++++++++++--
1 file changed, 31 insertions(+), 3 deletions(-)
(limited to 'src/net/java/games/jogl/impl/x11/X11GLContextFactory.java')
diff --git a/src/net/java/games/jogl/impl/x11/X11GLContextFactory.java b/src/net/java/games/jogl/impl/x11/X11GLContextFactory.java
index 817a41017..3582d51d9 100644
--- a/src/net/java/games/jogl/impl/x11/X11GLContextFactory.java
+++ b/src/net/java/games/jogl/impl/x11/X11GLContextFactory.java
@@ -50,6 +50,8 @@ public class X11GLContextFactory extends GLContextFactory {
NativeLibLoader.load();
}
+ private static final int MAX_ATTRIBS = 128;
+
public GraphicsConfiguration chooseGraphicsConfiguration(GLCapabilities capabilities,
GLCapabilitiesChooser chooser,
GraphicsDevice device) {
@@ -57,7 +59,8 @@ public class X11GLContextFactory extends GLContextFactory {
// Until we have a rock-solid visual selection algorithm written
// in pure Java, we're going to provide the underlying window
// system's selection to the chooser as a hint
- int[] attribs = glCapabilities2AttribList(capabilities);
+
+ int[] attribs = glCapabilities2AttribList(capabilities, isMultisampleAvailable());
long display = getDisplayConnection();
XVisualInfo recommendedVis = GLX.glXChooseVisual(display, screen, attribs);
int recommendedIndex = -1;
@@ -150,17 +153,22 @@ public class X11GLContextFactory extends GLContextFactory {
res.setAccumGreenBits(glXGetConfig(display, info, GLX.GLX_ACCUM_GREEN_SIZE, tmp));
res.setAccumBlueBits (glXGetConfig(display, info, GLX.GLX_ACCUM_BLUE_SIZE, tmp));
res.setAccumAlphaBits(glXGetConfig(display, info, GLX.GLX_ACCUM_ALPHA_SIZE, tmp));
+ if (isMultisampleAvailable()) {
+ res.setSampleBuffers(glXGetConfig(display, info, GLX.GLX_SAMPLE_BUFFERS_ARB, tmp) != 0);
+ res.setNumSamples (glXGetConfig(display, info, GLX.GLX_SAMPLES_ARB, tmp));
+ }
return res;
}
- public static int[] glCapabilities2AttribList(GLCapabilities caps) {
+ public static int[] glCapabilities2AttribList(GLCapabilities caps,
+ boolean isMultisampleAvailable) {
int colorDepth = (caps.getRedBits() +
caps.getGreenBits() +
caps.getBlueBits());
if (colorDepth < 15) {
throw new GLException("Bit depths < 15 (i.e., non-true-color) not supported");
}
- int[] res = new int[22];
+ int[] res = new int[MAX_ATTRIBS];
int idx = 0;
res[idx++] = GLX.GLX_RGBA;
if (caps.getDoubleBuffered()) {
@@ -187,6 +195,12 @@ public class X11GLContextFactory extends GLContextFactory {
res[idx++] = caps.getAccumGreenBits();
res[idx++] = GLX.GLX_ACCUM_BLUE_SIZE;
res[idx++] = caps.getAccumBlueBits();
+ if (isMultisampleAvailable && caps.getSampleBuffers()) {
+ res[idx++] = GL.GLX_SAMPLE_BUFFERS_ARB;
+ res[idx++] = GL.GL_TRUE;
+ res[idx++] = GL.GLX_SAMPLES_ARB;
+ res[idx++] = caps.getNumSamples();
+ }
res[idx++] = 0;
return res;
}
@@ -203,6 +217,20 @@ public class X11GLContextFactory extends GLContextFactory {
return staticDisplay;
}
+ private static boolean checkedMultisample;
+ private static boolean multisampleAvailable;
+ public static boolean isMultisampleAvailable() {
+ if (!checkedMultisample) {
+ long display = getDisplayConnection();
+ String exts = GLX.glXGetClientString(display, GLX.GLX_EXTENSIONS);
+ if (exts != null) {
+ multisampleAvailable = (exts.indexOf("GLX_ARB_multisample") >= 0);
+ }
+ checkedMultisample = true;
+ }
+ return multisampleAvailable;
+ }
+
private static String glXGetConfigErrorCode(int err) {
switch (err) {
case GLX.GLX_NO_EXTENSION: return "GLX_NO_EXTENSION";
--
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