From 6c0c95d6045d2d2b4e6a3a2f11457850031c57bc Mon Sep 17 00:00:00 2001
From: marha <marha@users.sourceforge.net>
Date: Fri, 22 Aug 2014 21:55:11 +0200
Subject: fontconfig libxcb/xcb-proto mesa xkeyboard-config git update 22 Aug
 2014

libxcb/xcb-proto commit 8e3db42d67a0035bb16d16da28bd5eea7a269178
xkeyboard-config commit 10fce2c2baae471795d069f3a5f1307eedb9ff0a
fontconfig       commit 286cdc9c10b0453c25950103b6a1f7170d15bfdc
mesa             commit 97d03b9366bfa55b27feb92aa5afacd9c5f6f421
---
 mesalib/src/mesa/main/pixelstore.c | 42 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 42 insertions(+)

(limited to 'mesalib/src/mesa/main/pixelstore.c')

diff --git a/mesalib/src/mesa/main/pixelstore.c b/mesalib/src/mesa/main/pixelstore.c
index 05f6583a4..fc815337b 100644
--- a/mesalib/src/mesa/main/pixelstore.c
+++ b/mesalib/src/mesa/main/pixelstore.c
@@ -284,3 +284,45 @@ _mesa_init_pixelstore( struct gl_context *ctx )
    _mesa_reference_buffer_object(ctx, &ctx->DefaultPacking.BufferObj,
                                  ctx->Shared->NullBufferObj);
 }
+
+
+/**
+ * Check if the given compressed pixel storage parameters are legal.
+ * Record a GL error if illegal.
+ * \return  true if legal, false if illegal
+ */
+bool
+_mesa_compressed_pixel_storage_error_check(
+   struct gl_context *ctx,
+   GLint dimensions,
+   const struct gl_pixelstore_attrib *packing,
+   const char *caller)
+{
+   if (!_mesa_is_desktop_gl(ctx) || !packing->CompressedBlockSize)
+      return true;
+
+   if (packing->CompressedBlockWidth &&
+       packing->SkipPixels % packing->CompressedBlockWidth) {
+      _mesa_error(ctx, GL_INVALID_OPERATION,
+                  "%s(skip-pixels %% block-width)", caller);
+      return false;
+   }
+
+   if (dimensions > 1 &&
+       packing->CompressedBlockHeight &&
+       packing->SkipRows % packing->CompressedBlockHeight) {
+      _mesa_error(ctx, GL_INVALID_OPERATION,
+                  "%s(skip-rows %% block-height)", caller);
+      return false;
+   }
+
+   if (dimensions > 2 &&
+       packing->CompressedBlockDepth &&
+       packing->SkipImages % packing->CompressedBlockDepth) {
+      _mesa_error(ctx, GL_INVALID_OPERATION,
+                  "%s(skip-images %% block-depth)", caller);
+      return false;
+   }
+
+   return true;
+}
-- 
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