Mesa (master): mesa: Add asserts into emit_fog_instructions

[Brian Paul]

Module: Mesa
Branch: master
Commit: a7d8607d9ea4bfba31bd4eac00ab9a021db538e4
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=a7d8607d9ea4bfba31bd4eac00ab9a021db538e4

Author: Juha-Pekka Heikkila <juhapekka.heikkila at gmail.com>
Date:   Thu Dec 19 05:27:00 2013 -0700

mesa: Add asserts into emit_fog_instructions

Signed-off-by: Juha-Pekka Heikkila <juhapekka.heikkila at gmail.com>
Reviewed-by: Brian Paul <brianp at vmware.com>

---

 src/mesa/main/ff_fragment_shader.cpp |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/src/mesa/main/ff_fragment_shader.cpp b/src/mesa/main/ff_fragment_shader.cpp
index 16715f6..6e91697 100644
--- a/src/mesa/main/ff_fragment_shader.cpp
+++ b/src/mesa/main/ff_fragment_shader.cpp
@@ -1159,8 +1159,11 @@ emit_fog_instructions(texenv_fragment_program *p,
    fragcolor = swizzle_xyz(fog_result);
 
    oparams = p->shader->symbols->get_variable("gl_FogParamsOptimizedMESA");
+   assert(oparams);
    fogcoord = p->shader->symbols->get_variable("gl_FogFragCoord");
+   assert(fogcoord);
    params = p->shader->symbols->get_variable("gl_Fog");
+   assert(params);
    f = new(p->mem_ctx) ir_dereference_variable(fogcoord);
 
    ir_variable *f_var = p->make_temp(glsl_type::float_type, "fog_factor");