[tbb-commits] [tor-browser/tor-browser-38.1.0esr-5.0-1] Bug #16005: Restrict WebGL minimal mode a bit.

[mikeperry at torproject.org]

commit 9de178cec5b92e32934d206009a6804f7b1a9188
Author: Mike Perry <mikeperry-git at torproject.org>
Date:   Tue Jul 21 21:10:46 2015 -0700

    Bug #16005: Restrict WebGL minimal mode a bit.
    
    Georg found an old netbook with slightly lower values for some properties.
---
 dom/canvas/WebGLContext.h |   24 ++++++++++++------------
 1 file changed, 12 insertions(+), 12 deletions(-)

diff --git a/dom/canvas/WebGLContext.h b/dom/canvas/WebGLContext.h
index f72d552..5a769aa 100644
--- a/dom/canvas/WebGLContext.h
+++ b/dom/canvas/WebGLContext.h
@@ -54,27 +54,27 @@ class nsIDocShell;
  * Exceptions: some of the following values are set to higher values than in the spec because
  * the values in the spec are ridiculously low. They are explicitly marked below
  *
- * Tor Browser Modifications: The following values are the minimum between a 2009 laptop, and a 2013 Moto E
+ * Tor Browser Modifications: The following values are the minimum between an ancient netbook and a 2013 Moto E
  */
-#define MINVALUE_GL_MAX_TEXTURE_SIZE                  4096  // Different from the spec, which sets it to 64 on page 162
-#define MINVALUE_GL_MAX_CUBE_MAP_TEXTURE_SIZE         2048   // Different from the spec, which sets it to 16 on page 162
-#define MINVALUE_GL_MAX_VERTEX_ATTRIBS                16     // Page 164
-#define MINVALUE_GL_MAX_FRAGMENT_UNIFORM_VECTORS      224    // Page 164
+#define MINVALUE_GL_MAX_TEXTURE_SIZE                  2048  // Different from the spec, which sets it to 64 on page 162
+#define MINVALUE_GL_MAX_CUBE_MAP_TEXTURE_SIZE         2048  // Different from the spec, which sets it to 16 on page 162
+#define MINVALUE_GL_MAX_VERTEX_ATTRIBS                16    // Page 164
+#define MINVALUE_GL_MAX_FRAGMENT_UNIFORM_VECTORS      224   // Page 164
 #define MINVALUE_GL_MAX_VERTEX_UNIFORM_VECTORS        256   // Page 164
-#define MINVALUE_GL_MAX_VARYING_VECTORS               16     // Page 164
-#define MINVALUE_GL_MAX_TEXTURE_IMAGE_UNITS           16     // Page 164
-#define MINVALUE_GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS    16     // Page 164
-#define MINVALUE_GL_MAX_RENDERBUFFER_SIZE             4096  // Different from the spec, which sets it to 1 on page 164
-#define MINVALUE_GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS  32     // Page 164
+#define MINVALUE_GL_MAX_VARYING_VECTORS               8     // Page 164
+#define MINVALUE_GL_MAX_TEXTURE_IMAGE_UNITS           8     // Page 164
+#define MINVALUE_GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS    8     // Page 164
+#define MINVALUE_GL_MAX_RENDERBUFFER_SIZE             2048  // Different from the spec, which sets it to 1 on page 164
+#define MINVALUE_GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS  16    // Page 164
 
 /* The following additional values were set specifically for fingerprinting.
- * These ranges came from a 2013 Moto E.
+ * These ranges came from a 2013 Moto E and an old macbook.
  *
  * These values specify the upper end of the maximum size of line and point
  * elements. The lower bounds are 1 in both cases (and the minimum of 1 is
  * guaranteed by OpenGL). */
 #define MINVALUE_GL_ALIASED_LINE_WIDTH_RANGE          5
-#define MINVALUE_GL_ALIASED_POINT_SIZE_RANGE          255
+#define MINVALUE_GL_ALIASED_POINT_SIZE_RANGE          63
 /* This value is used to cap the resolution of the viewport to (MAX x MAX) */
 #define MINVALUE_GL_MAX_VIEWPORT_DIMS                 4096