i965: Bump GL_MAX_CUBE_MAP_TEXTURE_SIZE to 8192.

Gen4+ supports 8192x8192 cube maps.  Ivybridge and later can actually
support 16384, but that would place GL_MAX_CUBE_MAP_TEXTURE_SIZE above
GL_MAX_TEXTURE_SIZE, which seems like a bad idea.

(Unfortunately, we can't bump GL_MAX_TEXTURE_SIZE to 16384 without
causing regressions due to awful W-tiled stencil buffer interactions.)

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=74130
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>

diff --git a/src/mesa/drivers/dri/i965/brw_context.c b/src/mesa/drivers/dri/i965/brw_context.c
index 50d6ca13208b29388807843b292422af970b63a7..339b49346709c7f57d90e35d4402f2a4baa743f4 100644 (file)
--- a/src/mesa/drivers/dri/i965/brw_context.c
+++ b/src/mesa/drivers/dri/i965/brw_context.c
@@ -312,7 +312,7 @@ brw_initialize_context_constants(struct brw_context *brw)
    if (ctx->Const.MaxTextureLevels > MAX_TEXTURE_LEVELS)
       ctx->Const.MaxTextureLevels = MAX_TEXTURE_LEVELS;
    ctx->Const.Max3DTextureLevels = 12; /* 2048 */
-   ctx->Const.MaxCubeTextureLevels = 12;
+   ctx->Const.MaxCubeTextureLevels = 14; /* 8192 */
 
    if (brw->gen >= 7)
       ctx->Const.MaxArrayTextureLayers = 2048;