Mesa (master): gallivm: Display message instead of crashing when sampler generator was not supplied for tgsi translation .

[Jose Fonseca]

Module: Mesa
Branch: master
Commit: 9db4a211e96356deb963223038eea074a5fe0eda
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=9db4a211e96356deb963223038eea074a5fe0eda

Author: José Fonseca <jfonseca at vmware.com>
Date:   Mon May  3 13:16:09 2010 +0100

gallivm: Display message instead of crashing when sampler generator was not supplied for tgsi translation.

---

 src/gallium/auxiliary/gallivm/lp_bld_tgsi_soa.c |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)

diff --git a/src/gallium/auxiliary/gallivm/lp_bld_tgsi_soa.c b/src/gallium/auxiliary/gallivm/lp_bld_tgsi_soa.c
index faf491f..d998386 100644
--- a/src/gallium/auxiliary/gallivm/lp_bld_tgsi_soa.c
+++ b/src/gallium/auxiliary/gallivm/lp_bld_tgsi_soa.c
@@ -606,6 +606,14 @@ emit_tex( struct lp_build_tgsi_soa_context *bld,
    unsigned num_coords;
    unsigned i;
 
+   if (!bld->sampler) {
+      _debug_printf("warning: found texture instruction but no sampler generator supplied\n");
+      for (i = 0; i < 4; i++) {
+         texel[i] = bld->base.undef;
+      }
+      return;
+   }
+
    switch (inst->Texture.Texture) {
    case TGSI_TEXTURE_1D:
       num_coords = 1;