From: Chia-I Wu <olvaffe@gmail.com>
Date: Tue, 15 Jul 2014 01:54:08 +0000 (+0800)
Subject: ilo: raise texture size limits
X-Git-Tag: upstream/10.3~1023
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=c25fe88ebf0939ac1972cc0994819c27408ca59e;p=platform%2Fupstream%2Fmesa.git

ilo: raise texture size limits

Report the hardware limits now that max-texture-size piglit test has been
fixed.
---

diff --git a/src/gallium/drivers/ilo/ilo_resource.c b/src/gallium/drivers/ilo/ilo_resource.c
index 61464a2..359c635 100644
--- a/src/gallium/drivers/ilo/ilo_resource.c
+++ b/src/gallium/drivers/ilo/ilo_resource.c
@@ -63,10 +63,13 @@ struct tex_layout {
 };
 
 /*
- * We do not know if we will fail until we try to allocate the bo.
- * So just set a limit on the texture size.
+ * From the Ivy Bridge PRM, volume 1 part 1, page 105:
+ *
+ *     "In addition to restrictions on maximum height, width, and depth,
+ *      surfaces are also restricted to a maximum size in bytes. This
+ *      maximum is 2 GB for all products and all surface types."
  */
-static const size_t max_resource_size = 1u << 30;
+static const size_t max_resource_size = 1u << 31;
 
 static void
 tex_layout_init_qpitch(struct tex_layout *layout)
diff --git a/src/gallium/drivers/ilo/ilo_screen.c b/src/gallium/drivers/ilo/ilo_screen.c
index 4e4739c..e2a0e23 100644
--- a/src/gallium/drivers/ilo/ilo_screen.c
+++ b/src/gallium/drivers/ilo/ilo_screen.c
@@ -309,23 +309,12 @@ ilo_get_param(struct pipe_screen *screen, enum pipe_cap param)
        *           Max WxHxD for 2D and CUBE     Max WxHxD for 3D
        *  GEN6           8192x8192x512            2048x2048x2048
        *  GEN7         16384x16384x2048           2048x2048x2048
-       *
-       * However, when the texutre size is large, things become unstable.  We
-       * require the maximum texture size to be 2^30 bytes in
-       * screen->can_create_resource().  Since the maximum pixel size is 2^4
-       * bytes (PIPE_FORMAT_R32G32B32A32_FLOAT), textures should not have more
-       * than 2^26 pixels.
-       *
-       * For 3D textures, we have to set the maximum number of levels to 9,
-       * which has at most 2^24 pixels.  For 2D textures, we set it to 14,
-       * which has at most 2^26 pixels.  And for cube textures, we has to set
-       * it to 12.
        */
-      return 14;
+      return (is->dev.gen >= ILO_GEN(7)) ? 15 : 14;
    case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
-      return 9;
-   case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
       return 12;
+   case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
+      return (is->dev.gen >= ILO_GEN(7)) ? 15 : 14;
    case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
       return false;
    case PIPE_CAP_BLEND_EQUATION_SEPARATE: