Merge pull request #117 from PSuchita/dev

Texture + Stream Bug Fix 

1 files changed, 10 insertions, 3 deletions

diff --git a/src/cuda-sim/instructions.cc b/src/cuda-sim/instructions.cc
index c85654c..11001d7 100644
--- a/src/cuda-sim/instructions.cc
+++ b/src/cuda-sim/instructions.cc
@@ -5258,11 +5258,18 @@ void tex_impl( const ptx_instruction *pI, ptx_thread_info *thread )
    if (!ptx_tex_regs) ptx_tex_regs = new ptx_reg_t[4];
    unsigned nelem = src2.get_vect_nelem();
    thread->get_vector_operand_values(src2, ptx_tex_regs, nelem); //ptx_reg should be 4 entry vector type...coordinates into texture
-
+   /*
+     For programs with many streams, textures can be bound and unbound
+     asynchronously.  This means we need to use the kernel's "snapshot" of
+     the state of the texture mappings when it was launched (so that we
+     don't try to access the incorrect texture mapping if it's been updated,
+     or that we don't access a mapping that has been unbound).
+   */
    gpgpu_t *gpu = thread->get_gpu();
+   kernel_info_t &k = thread->get_kernel();
    const struct textureReference* texref = gpu->get_texref(texname);
-   const struct cudaArray* cuArray = gpu->get_texarray(texname); 
-   const struct textureInfo* texInfo = gpu->get_texinfo(texname);
+   const struct cudaArray* cuArray = k.get_texarray(texname); 
+   const struct textureInfo* texInfo = k.get_texinfo(texname);
    const struct textureReferenceAttr* texAttr = gpu->get_texattr(texname);
 
    //assume always 2D f32 input