[Mesa-dev] 7.11.1 release, and picking NormalMatrix fix
tom fogal
tfogal at sci.utah.edu
Wed Nov 2 12:04:29 PDT 2011
It's been three months since 7.11 came out. Have there been any
thoughts on a 7.11.1 release date?
Also, any qualms about me cherry-picking the 'NormalMatrix' fix below
into 7.11?
Thanks,
-tom
commit cc4ddc3a1e4bbe5fccd03b39b3590368be8c172f
Author: Eric Anholt <eric at anholt.net>
Date: Tue Oct 18 17:17:28 2011 -0700
glsl: Fix gl_NormalMatrix swizzle setup to match i965's invariants.
A driver trying to set up builtin uniforms is faced with a problem:
How do I walk the ir_variable structure (representing an array of
structs, or array of matrices, or struct, or whatever), and set up
driver structures so that dereference of that uniform gets the
corresponding ParameterValues[] entry. The rule in general is that
each corresponding vector-sized field of an array of structs is one
builtin uniform state slot. i965 relied on another invariant: each
state slot has a number of unique channel swizzles corresponding to
the number of elements in the field's vector, to avoid needing to walk
the glsl_type in parallel to get at vector_elements.
All of the builtin uniforms followed this behavior, except for
gl_NormalMatrix. That's a mat3 (so 3 vec3s), but it was swizzled as 3
vec4s.
Fixes piglit glsl-fs-normalmatrix.
Reviewed-by: Paul Berry <stereotype441 at gmail.com>
src/glsl/ir_variable.cpp | 6 +++---
1 files changed, 3 insertions(+), 3 deletions(-)
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