From: Felix Kuehling <fxkuehl@gmx.de>
Date: Wed, 23 Feb 2005 16:37:27 +0000 (+0000)
Subject: With Savage DRM version 2.3.x or later use event counters for texture
X-Git-Tag: mesa-7.8~9585
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=540b260cbd39c103c045410b5312d4c57a569e33;p=platform%2Fupstream%2Fmesa.git

With Savage DRM version 2.3.x or later use event counters for texture
heap aging, similar to the way it's done in the i810 and i855 drivers.
This avoids idling the engine on every texture upload.
---

diff --git a/src/mesa/drivers/dri/savage/savage_xmesa.c b/src/mesa/drivers/dri/savage/savage_xmesa.c
index 3c0fae7..8d27486 100644
--- a/src/mesa/drivers/dri/savage/savage_xmesa.c
+++ b/src/mesa/drivers/dri/savage/savage_xmesa.c
@@ -742,6 +742,7 @@ void savageGetLock( savageContextPtr imesa, GLuint flags )
    int me = imesa->hHWContext;
    int stamp = dPriv->lastStamp; 
    int heap;
+   unsigned int timestamp = 0;
 
   
 
@@ -781,6 +782,15 @@ void savageGetLock( savageContextPtr imesa, GLuint flags )
    }
 
    for (heap = 0; heap < imesa->lastTexHeap; ++heap) {
+      /* If a heap was changed, update its timestamp. Do this before
+       * DRI_AGE_TEXTURES updates the local_age. */
+      if (imesa->textureHeaps[heap] &&
+	  imesa->textureHeaps[heap]->global_age[0] >
+	  imesa->textureHeaps[heap]->local_age) {
+	 if (timestamp == 0)
+	    timestamp = savageEmitEventLocked(imesa, 0);
+	 imesa->textureHeaps[heap]->timestamp = timestamp;
+      }
       DRI_AGE_TEXTURES( imesa->textureHeaps[heap] );
    }
 
diff --git a/src/mesa/drivers/dri/savage/savageioctl.c b/src/mesa/drivers/dri/savage/savageioctl.c
index 707fcb6..3c93255 100644
--- a/src/mesa/drivers/dri/savage/savageioctl.c
+++ b/src/mesa/drivers/dri/savage/savageioctl.c
@@ -617,6 +617,18 @@ void savageFlushCmdBufLocked( savageContextPtr imesa, GLboolean discard )
 	imesa->cmdBuf.write = imesa->cmdBuf.base;
 	savageEmitOldState(imesa);
 	imesa->cmdBuf.start = imesa->cmdBuf.write;
+
+	/* Timestamp current texture objects for texture heap aging.
+	 * Only useful with long-lived 32-bit event tags available
+	 * with Savage DRM 2.3.x or later. */
+	if ((imesa->CurrentTexObj[0] || imesa->CurrentTexObj[1]) &&
+	    imesa->savageScreen->driScrnPriv->drmMinor >= 3) {
+	    unsigned int e = savageEmitEventLocked(imesa, 0);
+	    if (imesa->CurrentTexObj[0])
+		imesa->CurrentTexObj[0]->timestamp = e;
+	    if (imesa->CurrentTexObj[1])
+		imesa->CurrentTexObj[1]->timestamp = e;
+	}
     }
 
     if (discard) {
diff --git a/src/mesa/drivers/dri/savage/savagetex.c b/src/mesa/drivers/dri/savage/savagetex.c
index ec04b18..0badde9 100644
--- a/src/mesa/drivers/dri/savage/savagetex.c
+++ b/src/mesa/drivers/dri/savage/savagetex.c
@@ -770,7 +770,14 @@ static void savageUploadTexImages( savageContextPtr imesa, savageTexObjPtr t )
       savageFlushVertices (imesa);
       LOCK_HARDWARE(imesa);
       savageFlushCmdBufLocked (imesa, GL_FALSE);
-      WAIT_IDLE_EMPTY_LOCKED(imesa);
+      /* Heap timestamps are only reliable with Savage DRM 2.3.x or
+       * later. Earlier versions had only 16 bit time stamps which
+       * would wrap too frequently. */
+      if (imesa->savageScreen->driScrnPriv->drmMinor >= 3) {
+	  unsigned int heap = t->base.heap->heapId;
+	  savageWaitEvent (imesa, imesa->textureHeaps[heap]->timestamp);
+      } else
+	  WAIT_IDLE_EMPTY_LOCKED(imesa);
 
       for (i = 0 ; i < numLevels ; i++) {
          const GLint j = t->base.firstLevel + i;  /* the texObj's level */