Adding additional fixes for the texture bugs

1 files changed, 7 insertions, 1 deletions

diff --git a/src/cuda-sim/instructions.cc b/src/cuda-sim/instructions.cc
index d29fc8b..11001d7 100644
--- a/src/cuda-sim/instructions.cc
+++ b/src/cuda-sim/instructions.cc
@@ -5258,7 +5258,13 @@ 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);