From 2420318cd9d42e1dda43e9e6ffb0accae1ff6b02 Mon Sep 17 00:00:00 2001
From: Eric Anholt <anholt@FreeBSD.org>
Date: Wed, 19 Oct 2005 03:23:29 +0000
Subject: Make SiS a little more like other drivers: Add SIS_DEBUG (only option
 being "fall" so far) and make the fallback_force option be no_rast like other
 drivers. Incidentally, makes no_rast not crash (though it still fails to
 render).

---
 src/mesa/drivers/dri/sis/sis_context.c | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

(limited to 'src/mesa/drivers/dri/sis/sis_context.c')

diff --git a/src/mesa/drivers/dri/sis/sis_context.c b/src/mesa/drivers/dri/sis/sis_context.c
index 101b97b7b8..948f15a941 100644
--- a/src/mesa/drivers/dri/sis/sis_context.c
+++ b/src/mesa/drivers/dri/sis/sis_context.c
@@ -61,6 +61,10 @@ USE OR OTHER DEALINGS IN THE SOFTWARE.
 #define need_GL_ARB_multisample
 #include "extension_helper.h"
 
+#ifndef SIS_DEBUG
+int SIS_DEBUG = 0;
+#endif
+
 int GlobalCurrentHwcx = -1;
 int GlobalHwcxCountBase = 1;
 int GlobalCmdQueueLen = 0;
@@ -74,6 +78,12 @@ struct dri_extension card_extensions[] =
     { NULL,                                NULL }
 };
 
+static const struct dri_debug_control debug_control[] =
+{
+    { "fall",  DEBUG_FALLBACKS },
+    { NULL,    0 }
+};
+
 void
 WaitEngIdle (sisContextPtr smesa)
 {
@@ -200,6 +210,10 @@ sisCreateContext( const __GLcontextModes *glVisual,
    driParseConfigFiles (&smesa->optionCache, &sisScreen->optionCache,
 			sisScreen->driScreen->myNum, "sis");
 
+#if DO_DEBUG
+   SIS_DEBUG = driParseDebugString(getenv("SIS_DEBUG"), debug_control);
+#endif
+
    /* TODO: index mode */
 
    smesa->CurrentQueueLenPtr = &(smesa->sarea->QueueLength);
@@ -269,6 +283,11 @@ sisCreateContext( const __GLcontextModes *glVisual,
       smesa->PrevTexFormat[i] = 0;
    }
 
+   if (driQueryOptionb(&smesa->optionCache, "no_rast")) {
+      fprintf(stderr, "disabling 3D acceleration\n");
+      FALLBACK(smesa, SIS_FALLBACK_DISABLE, 1);
+   }
+
    return GL_TRUE;
 }
 
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