From 7bc86f21b20ebb32564d4493a445d9a1dfedb118 Mon Sep 17 00:00:00 2001
From: Sven Gothel <sgothel@jausoft.com>
Date: Fri, 19 Sep 2014 01:24:32 +0200
Subject: New GLRendererQuirks.BuggyColorRenderbuffer: On Mesa 7.2 software,
 FBO color renderbuffer may cause a crash

Workaround crash caused by Mesa 7.2 software rendering
using color renderbuffer target in FBO.

If Mesa < 8.0 and software - or -
property 'jogl.fbo.force.nocolorrenderbuffer' is set,
set quirks:
	- GLRendererQuirks.BuggyColorRenderbuffer
	- GLRendererQuirks.NoFullFBOSupport (to disable MSAA)

GLFBODrawable always uses FBOMODE_USE_TEXTURE
if GLRendererQuirks.BuggyColorRenderbuffer is set.

+++

Crash Report:
  GNU C Library       : 2.13 stable
  OpenGL              : software
  Operating System    : Linux 3.2.0-4-amd64 #1 SMP Debian 3.2.51-1 x86_64
  Processor ID        : x86 Family 6 Model 44 Stepping 2, GenuineIntel

Abnormal termination:
Segmentation violation

Register State (from fault):
  RAX = 00000000ff1818f0  RBX = 00000000beaf8afc
  RCX = 0000000000000004  RDX = 00007f85ed9c9010
  RSP = 00007f8252d24fd0  RBP = 00007f8252d25020
  RSI = 0000000017b9b330  RDI = 0000000015bca400

   R8 = 0000000000000000   R9 = 00007f81edcd3014
  R10 = 00007f823565f6ce  R11 = 00007f827bee49aa
  R12 = 0000000000001406  R13 = 0000000000000001
  R14 = 00000000154d5458  R15 = 00000000154d4f10

  RIP = 00007f823565f7bc  EFL = 0000000000010206

   CS = 0033   FS = 0000   GS = 0000

Stack Trace (from fault):
[  0] 0x00007f823565f7bc put_row_ubyte4 at /mesa/main/renderbuffer.c:665 (in /lib/libGL.so.1)
[  1] 0x00007f8235727239 _swrast_write_rgba_span at /mesa/swrast/s_span.c:1450 (in /lib/libGL.so.1)
[  2] 0x00007f823574b071 smooth_rgba_triangle at /mesa/swrast/s_tritemp.h:862 (in /lib/libGL.so.1)
[  3] 0x00007f82357155f0 _swrast_Triangle at /mesa/swrast/s_context.c:692 (in /lib/libGL.so.1)
[  4] 0x00007f8235771780 triangle_offset_twoside_rgba at /mesa/swrast_setup/ss_tritmp.h:188 (in /lib/libGL.so.1)
[  5] 0x00007f82356d2cea _tnl_render_poly_elts at /mesa/tnl/t_vb_rendertmp.h:313 (in /lib/libGL.so.1)
[  6] 0x00007f82356d335e _tnl_RenderClippedPolygon at /mesa/tnl/t_vb_render.c:244 (in /lib/libGL.so.1)
[  7] 0x00007f82356c9313 clip_tri_4 at /mesa/tnl/t_vb_cliptmp.h:230 (in /lib/libGL.so.1)
[  8] 0x00007f82356cd026 clip_render_triangles_verts at /mesa/tnl/t_vb_rendertmp.h:163 (in /lib/libGL.so.1)
[  9] 0x00007f82356d37d9 run_render at /mesa/tnl/t_vb_render.c:320 (in /lib/libGL.so.1)
[ 10] 0x00007f82356c2436 _tnl_run_pipeline at /mesa/tnl/t_pipeline.c:158 (in /lib/libGL.so.1)
[ 11] 0x00007f82356c37da _tnl_draw_prims at /mesa/tnl/t_draw.c:402 (in /lib/libGL.so.1)
[ 12] 0x00007f82356b673a vbo_exec_DrawArrays at /mesa/vbo/vbo_exec_array.c:263 (in /lib/libGL.so.1)
[ 13] 0x00007f823583e5b0 glDrawArrays at /mesa/glapi/glapitemp.h:1645 (in /lib/libGL.so.1)

+++
---
 src/jogl/classes/jogamp/opengl/GLContextImpl.java | 22 ++++++++++++++++++++--
 1 file changed, 20 insertions(+), 2 deletions(-)

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

diff --git a/src/jogl/classes/jogamp/opengl/GLContextImpl.java b/src/jogl/classes/jogamp/opengl/GLContextImpl.java
index 1dac79516..6239103da 100644
--- a/src/jogl/classes/jogamp/opengl/GLContextImpl.java
+++ b/src/jogl/classes/jogamp/opengl/GLContextImpl.java
@@ -1921,6 +1921,15 @@ public abstract class GLContextImpl extends GLContext {
                 System.err.println("Quirk: "+GLRendererQuirks.toString(quirk)+": cause: Renderer " + glRenderer);
             }
             quirks.addQuirk( quirk );
+        } else {
+            // software
+            if( vendorVersion.compareTo(mesaSafeFBOVersion) < 0 ) { // FIXME: Is it fixed in >= 8.0.0 ?
+                final int quirk = GLRendererQuirks.BuggyColorRenderbuffer;
+                if(DEBUG) {
+                    System.err.println("Quirk: "+GLRendererQuirks.toString(quirk)+": cause: Renderer " + glRenderer + " / Mesa-Version "+vendorVersion);
+                }
+                quirks.addQuirk( quirk );
+            }
         }
         if (compatCtx && (major > 3 || (major == 3 && minor >= 1))) {
             // FIXME: Apply vendor version constraints!
@@ -1963,13 +1972,22 @@ public abstract class GLContextImpl extends GLContext {
     //
     // Property related quirks
     //
-    if( FORCE_MIN_FBO_SUPPORT ) {
-        final int quirk = GLRendererQuirks.NoFullFBOSupport;
+    if( FORCE_NO_COLOR_RENDERBUFFER ) {
+        final int quirk = GLRendererQuirks.BuggyColorRenderbuffer;
         if(DEBUG) {
             System.err.println("Quirk: "+GLRendererQuirks.toString(quirk)+": cause: property");
         }
         quirks.addQuirk( quirk );
     }
+    if( FORCE_MIN_FBO_SUPPORT || quirks.exist(GLRendererQuirks.BuggyColorRenderbuffer) ) {
+        final int quirk = GLRendererQuirks.NoFullFBOSupport;
+        if(DEBUG) {
+            final String causeProps = FORCE_MIN_FBO_SUPPORT ? "property, " : "";
+            final String causeQuirk = quirks.exist(GLRendererQuirks.BuggyColorRenderbuffer) ? "BuggyColorRenderbuffer" : "";
+            System.err.println("Quirk: "+GLRendererQuirks.toString(quirk)+": cause: "+causeProps+causeQuirk);
+        }
+        quirks.addQuirk( quirk );
+    }
 
     if(DEBUG) {
         System.err.println("Quirks local.0: "+quirks);
-- 
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