From 114385b2cf0f6aa09725bece92ce8eae6e5823e2 Mon Sep 17 00:00:00 2001
From: Robert Bragg <robert@linux.intel.com>
Date: Thu, 19 Feb 2009 09:20:20 +0000
Subject: [PATCH] [cogl-material] Always glBindTexture when flushing material
 state

Bug #1457 - Creating a new texture messes up the cogl material state
            cache; reported by Neil Roberts

We still don't have caching of bound texture state so we always have to
re-bind the texture when flushing the GL state of any material layers.
---
 common/cogl-material.c | 42 +++++++++++++++++++++++-------------------
 1 file changed, 23 insertions(+), 19 deletions(-)

diff --git a/common/cogl-material.c b/common/cogl-material.c
index b7cf11c5f..7ee64196e 100644
--- a/common/cogl-material.c
+++ b/common/cogl-material.c
@@ -903,25 +903,6 @@ _cogl_material_flush_layers_gl_state (CoglMaterial *material,
         (fallback_mask & (1<<i)) ? TRUE : FALSE;
       new_gl_layer_info.disabled =
         (disable_mask & (1<<i)) ? TRUE : FALSE;
-      if (i < ctx->current_layers->len)
-        {
-          gl_layer_info =
-            &g_array_index (ctx->current_layers, CoglLayerInfo, i);
-
-#ifndef DISABLE_MATERIAL_CACHE
-          if (gl_layer_info->handle == layer_handle &&
-              !(layer->flags & COGL_MATERIAL_LAYER_FLAG_DIRTY) &&
-              !(gl_layer_info->layer0_overridden ||
-                new_gl_layer_info.layer0_overridden) &&
-              (gl_layer_info->fallback
-               == new_gl_layer_info.fallback) &&
-              (gl_layer_info->disabled
-               == new_gl_layer_info.disabled))
-            {
-              continue;
-            }
-#endif
-        }
 
       tex_handle = layer->texture;
       cogl_texture_get_gl_texture (tex_handle, &gl_texture, &gl_target);
@@ -972,6 +953,29 @@ _cogl_material_flush_layers_gl_state (CoglMaterial *material,
       GE (glBindTexture (gl_target, gl_texture));
 #endif
 
+      /* XXX: Once we add caching for glBindTexture state, these
+       * checks should be moved back up to the top of the loop!
+       */
+      if (i < ctx->current_layers->len)
+        {
+          gl_layer_info =
+            &g_array_index (ctx->current_layers, CoglLayerInfo, i);
+
+#ifndef DISABLE_MATERIAL_CACHE
+          if (gl_layer_info->handle == layer_handle &&
+              !(layer->flags & COGL_MATERIAL_LAYER_FLAG_DIRTY) &&
+              !(gl_layer_info->layer0_overridden ||
+                new_gl_layer_info.layer0_overridden) &&
+              (gl_layer_info->fallback
+               == new_gl_layer_info.fallback) &&
+              (gl_layer_info->disabled
+               == new_gl_layer_info.disabled))
+            {
+              continue;
+            }
+#endif
+        }
+
       /* Disable the previous target if it was different */
 #ifndef DISABLE_MATERIAL_CACHE
       if (gl_layer_info &&