From 3e19c2267500c0c459e7dce8d2087387a56f3296 Mon Sep 17 00:00:00 2001
From: Sven Gothel <sgothel@jausoft.com>
Date: Thu, 28 Nov 2019 02:00:29 +0100
Subject: Bug 1156 - Implement DRM/GBM Support for JOGL(EGL) and NEWT

Adding new classes DRMLib (gluegen of drm + gbm), DRMUtil and DRMMode GBMDummyUpstreamSurfaceHook
to new package jogamp.nativewindow.drm, allowing full awareness of DRM + GBM within NativeWindow for JOGL + NEWT.

DRMMode replaces the previous native code of collecting drmMode* attributes: active connector, used mode, encoder etc
and also supports multiple active connectors.

DRMUtil handles the global static drmFd (file descriptor), currently only the GNU/Linux DRM device is supported.

GBMDummyUpstreamSurfaceHook provides a simple dummy GBM surface.

NativeWindow provides the new nativewindow_drm.so and nativewindow-os-drm.jar,
which are included in most 'all' jar packages.

build property: setup.addNativeEGLGBM -> setup.addNativeDRMGBM

Changes NativeWindowFactory:
- TYPE_EGL_GBM -> TYPE_DRM_GBM while keeping the package ID of '.egl.gbm' for NEWT (using EGL)
- Initializing DRMUtil at initialization

Changes EGLDrawableFactory:
- Using native GBM device for the default EGL display creation instead of EGL_DEFAULT_DISPLAY.
  This resolves issues as seen in Bug 1402, as well in cases w/o surfaceless support.

- GL profile mapping uses surfaceless when available for GBM,
  otherwise uses createDummySurfaceImpl (dummy GBM surface via GBMDummyUpstreamSurfaceHook)

- createDummySurfaceImpl uses a dummy GBM surface via GBMDummyUpstreamSurfaceHook

- DesktopGL not available with GBM, see Bug 1401

NEWT's DRM + GBM + EGL Driver
- Using DRMLib, DRMUtil and DRMMode, removed most native code but WindowDriver swapBuffer
- ScreenDriver uses DRMMode, however currently only first connected CRT.
- WindowDriver aligns position and size to screen, positions other than 0/0 causes DRM failure
- WindowDriver reconfigure n/a

NEWT TODO:
- DRM Cursor support (mouse pointer)
- Pointer event handling
---
 .../opengl/egl/EGLGraphicsConfiguration.java       | 23 ++++++++++++++--------
 1 file changed, 15 insertions(+), 8 deletions(-)

(limited to 'src/jogl/classes/jogamp/opengl/egl/EGLGraphicsConfiguration.java')

diff --git a/src/jogl/classes/jogamp/opengl/egl/EGLGraphicsConfiguration.java b/src/jogl/classes/jogamp/opengl/egl/EGLGraphicsConfiguration.java
index 7e54152bf..5fd0535ad 100644
--- a/src/jogl/classes/jogamp/opengl/egl/EGLGraphicsConfiguration.java
+++ b/src/jogl/classes/jogamp/opengl/egl/EGLGraphicsConfiguration.java
@@ -113,15 +113,22 @@ public class EGLGraphicsConfiguration extends MutableGraphicsConfiguration imple
 
     void updateGraphicsConfiguration() {
         final CapabilitiesImmutable capsChosen = getChosenCapabilities();
-        final EGLGraphicsConfiguration newConfig = (EGLGraphicsConfiguration)
-            GraphicsConfigurationFactory.getFactory(getScreen().getDevice(), capsChosen).chooseGraphicsConfiguration(
-                capsChosen, getRequestedCapabilities(), chooser, getScreen(), VisualIDHolder.VID_UNDEFINED);
-        if(null!=newConfig) {
-            // FIXME: setScreen( ... );
-            setChosenCapabilities(newConfig.getChosenCapabilities());
-            if(DEBUG) {
-                System.err.println("updateGraphicsConfiguration(1): "+this);
+        if( VisualIDHolder.VID_UNDEFINED == capsChosen.getVisualID(VIDType.NATIVE) ) {
+            final EGLGraphicsConfiguration newConfig = (EGLGraphicsConfiguration)
+                GraphicsConfigurationFactory.getFactory(getScreen().getDevice(), capsChosen).chooseGraphicsConfiguration(
+                    capsChosen, getRequestedCapabilities(), chooser, getScreen(), VisualIDHolder.VID_UNDEFINED);
+            if(null!=newConfig) {
+                // FIXME: setScreen( ... );
+                setChosenCapabilities(newConfig.getChosenCapabilities());
+                if(DEBUG) {
+                    System.err.println("EGLGraphicsConfiguration.updateGraphicsConfiguration updated: "+this);
+                }
+            } else {
+                throw new GLException("No native VisualID pre-chosen and update failed: "+this);
             }
+        } else if (DEBUG) {
+            System.err.println("EGLGraphicsConfiguration.updateGraphicsConfiguration kept:"+this);
+
         }
     }
 
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