diff options
Diffstat (limited to 'src/cuda-sim')
| -rw-r--r-- | src/cuda-sim/instructions.cc | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/src/cuda-sim/instructions.cc b/src/cuda-sim/instructions.cc index e91ddd4..1c3bf4f 100644 --- a/src/cuda-sim/instructions.cc +++ b/src/cuda-sim/instructions.cc @@ -3695,6 +3695,7 @@ void tex_impl( const ptx_instruction *pI, ptx_thread_info *thread ) std::string texname = src1.name(); unsigned to_type = pI->get_type(); + unsigned c_type = pI->get_type2(); fflush(stdout); ptx_reg_t data1, data2, data3, data4; if (!ptx_tex_regs) ptx_tex_regs = new ptx_reg_t[4]; @@ -3728,6 +3729,7 @@ void tex_impl( const ptx_instruction *pI, ptx_thread_info *thread ) width = cuArray->width; height = cuArray->height; if (texref->normalized) { + assert(c_type == F32_TYPE); x_f32 = ptx_tex_regs[0].f32; if (texref->addressMode[0] == cudaAddressModeClamp) { x_f32 = (x_f32 > 1.0)? 1.0 : x_f32; @@ -3749,7 +3751,25 @@ void tex_impl( const ptx_instruction *pI, ptx_thread_info *thread ) y = 0; } } else { - x = ptx_tex_regs[0].u64; + switch ( c_type ) { + case S32_TYPE: + x = ptx_tex_regs[0].s32; + assert(texref->filterMode == cudaFilterModePoint); + break; + case F32_TYPE: + x_f32 = ptx_tex_regs[0].f32; + alpha = x_f32 - floor(x_f32); // offset into subtexel (for linear sampling) + x = (int) x_f32; + break; + default: assert(0 && "Unsupported texture coordinate type."); + } + // handle texture fetch that exceeded boundaries + if (texref->addressMode[0] == cudaAddressModeClamp) { + x = (x > width - 1)? (width - 1) : x; + x = (x < 0)? 0 : x; + } else if (texref->addressMode[0] == cudaAddressModeWrap) { + x = x % width; + } } width *= (cuArray->desc.w+cuArray->desc.x+cuArray->desc.y+cuArray->desc.z)/8; x *= (cuArray->desc.w+cuArray->desc.x+cuArray->desc.y+cuArray->desc.z)/8; |