From 80fcbca7dff099be352a9b6237e05a02e321ef26 Mon Sep 17 00:00:00 2001
From: Brian Paul <brian.paul@tungstengraphics.com>
Date: Sun, 15 Oct 2006 22:30:35 +0000
Subject: [PATCH] allow >10 mipmap levels (patch by Benno Schulenberg) (bug
 3130)

---
 src/mesa/drivers/dri/common/xmlpool/options.h |  5 +++++
 src/mesa/drivers/dri/unichrome/via_context.c  | 22 +++++++++----------
 src/mesa/drivers/dri/unichrome/via_screen.c   |  9 ++++----
 src/mesa/drivers/dri/unichrome/via_tex.c      |  8 +++----
 4 files changed, 25 insertions(+), 19 deletions(-)

diff --git a/src/mesa/drivers/dri/common/xmlpool/options.h b/src/mesa/drivers/dri/common/xmlpool/options.h
index a0d617c3444..5cef72867b1 100644
--- a/src/mesa/drivers/dri/common/xmlpool/options.h
+++ b/src/mesa/drivers/dri/common/xmlpool/options.h
@@ -88,6 +88,11 @@ DRI_CONF_SECTION_BEGIN \
 	DRI_CONF_DESC(nl,"Beeldkwaliteit") \
 	DRI_CONF_DESC(fr,"Qualité d'image")
 
+#define DRI_CONF_EXCESS_MIPMAP(def) \
+DRI_CONF_OPT_BEGIN(excess_mipmap,bool,def) \
+	DRI_CONF_DESC(en,"Enable extra mipmap level") \
+DRI_CONF_OPT_END
+
 #define DRI_CONF_TEXTURE_DEPTH_FB       0
 #define DRI_CONF_TEXTURE_DEPTH_32       1
 #define DRI_CONF_TEXTURE_DEPTH_16       2
diff --git a/src/mesa/drivers/dri/unichrome/via_context.c b/src/mesa/drivers/dri/unichrome/via_context.c
index d5737c7d112..fa143186c1b 100644
--- a/src/mesa/drivers/dri/unichrome/via_context.c
+++ b/src/mesa/drivers/dri/unichrome/via_context.c
@@ -481,7 +481,7 @@ viaCreateContext(const __GLcontextModes *visual,
     /* Parse configuration files.
      */
     driParseConfigFiles (&vmesa->optionCache, &viaScreen->optionCache,
-			 sPriv->myNum, "via");
+			 sPriv->myNum, "unichrome");
 
     /* pick back buffer */
     vmesa->hasBack = visual->doubleBufferMode;
@@ -558,7 +558,11 @@ viaCreateContext(const __GLcontextModes *visual,
 
     ctx = vmesa->glCtx;
 
-    ctx->Const.MaxTextureLevels = 11;
+    if (driQueryOptionb(&vmesa->optionCache, "excess_mipmap"))
+        ctx->Const.MaxTextureLevels = 11;
+    else
+        ctx->Const.MaxTextureLevels = 10;
+
     ctx->Const.MaxTextureUnits = 2;
     ctx->Const.MaxTextureImageUnits = ctx->Const.MaxTextureUnits;
     ctx->Const.MaxTextureCoordUnits = ctx->Const.MaxTextureUnits;
@@ -656,20 +660,14 @@ viaCreateContext(const __GLcontextModes *visual,
        VIA_DEBUG = driParseDebugString( getenv( "VIA_DEBUG" ),
 					debug_control );
 
-    if (getenv("VIA_NO_RAST"))
+    if (getenv("VIA_NO_RAST") ||
+        driQueryOptionb(&vmesa->optionCache, "no_rast"))
        FALLBACK(vmesa, VIA_FALLBACK_USER_DISABLE, 1);
 
-    /* I don't understand why this isn't working:
-     */
     vmesa->vblank_flags =
        vmesa->viaScreen->irqEnabled ?
         driGetDefaultVBlankFlags(&vmesa->optionCache) : VBLANK_FLAG_NO_IRQ;
 
-    /* Hack this up in its place:
-     */
-    vmesa->vblank_flags = (getenv("VIA_VSYNC") ? 
-			   VBLANK_FLAG_SYNC : VBLANK_FLAG_NO_IRQ);
-
     if (getenv("VIA_PAGEFLIP"))
        vmesa->allowPageFlip = 1;
 
@@ -727,7 +725,9 @@ viaDestroyContext(__DRIcontextPrivate *driContextPriv)
 	assert (is_empty_list(&vmesa->tex_image_list[VIA_MEM_SYSTEM]));
 	assert (is_empty_list(&vmesa->freed_tex_buffers));
 
-        FREE(vmesa);
+	driDestroyOptionCache(&vmesa->optionCache);
+
+	FREE(vmesa);
     }
 }
 
diff --git a/src/mesa/drivers/dri/unichrome/via_screen.c b/src/mesa/drivers/dri/unichrome/via_screen.c
index 4f137c8ceb8..98a742c720f 100644
--- a/src/mesa/drivers/dri/unichrome/via_screen.c
+++ b/src/mesa/drivers/dri/unichrome/via_screen.c
@@ -46,16 +46,16 @@
 #include "GL/internal/dri_interface.h"
 #include "drirenderbuffer.h"
 
-/* Radeon configuration
- */
 #include "xmlpool.h"
 
 const char __driConfigOptions[] =
 DRI_CONF_BEGIN
     DRI_CONF_SECTION_PERFORMANCE
-        DRI_CONF_FTHROTTLE_MODE(DRI_CONF_FTHROTTLE_IRQS)
         DRI_CONF_VBLANK_MODE(DRI_CONF_VBLANK_DEF_INTERVAL_0)
     DRI_CONF_SECTION_END
+    DRI_CONF_SECTION_QUALITY
+        DRI_CONF_EXCESS_MIPMAP(false)
+    DRI_CONF_SECTION_END
     DRI_CONF_SECTION_DEBUG
         DRI_CONF_NO_RAST(false)
     DRI_CONF_SECTION_END
@@ -131,7 +131,6 @@ viaInitDriver(__DRIscreenPrivate *sPriv)
     viaScreen->fbOffset = 0;
     viaScreen->fbSize = gDRIPriv->fbSize;
     viaScreen->irqEnabled = gDRIPriv->irqEnabled;
-    viaScreen->irqEnabled = 1;
 
     if (VIA_DEBUG & DEBUG_DRI) {
 	fprintf(stderr, "deviceID = %08x\n", viaScreen->deviceID);
@@ -201,6 +200,8 @@ viaDestroyScreen(__DRIscreenPrivate *sPriv)
 
     via_free_empty_buffers(viaScreen->bufs);
 
+    driDestroyOptionInfo(&viaScreen->optionCache);
+
     FREE(viaScreen);
     sPriv->private = NULL;
 }
diff --git a/src/mesa/drivers/dri/unichrome/via_tex.c b/src/mesa/drivers/dri/unichrome/via_tex.c
index 1cba08dee8e..0261a3ff177 100644
--- a/src/mesa/drivers/dri/unichrome/via_tex.c
+++ b/src/mesa/drivers/dri/unichrome/via_tex.c
@@ -513,11 +513,11 @@ static GLboolean viaSetTexImages(GLcontext *ctx,
 
    numLevels = lastLevel - firstLevel + 1;
 
-   /* The hardware only supports 10 mipmap levels. Ignore higher levels.
+   /* The hardware supports only 10 mipmap levels; ignore higher levels.
     */
-   if (numLevels > 10) {
-      lastLevel -= numLevels - 10;
-      numLevels = 10;
+   if ((numLevels > 10) && (ctx->Const.MaxTextureLevels > 10)) {
+       lastLevel -= numLevels - 10;
+       numLevels = 10;
    }
 
    /* save these values, check if they effect the residency of the
-- 
2.30.2