Enabled integer arithmetic for filterSepSinglePass

modules/imgproc/src/filter.cpp

@@ -3388,12 +3388,12 @@ const int optimizedSepFilterLocalSize = 16;
 
 static bool ocl_sepFilter2D_SinglePass(InputArray _src, OutputArray _dst,
                                        Mat row_kernel, Mat col_kernel,
-                                       double delta, int borderType, int ddepth)
+                                       double delta, int borderType, int ddepth, int bdepth, bool int_arithm)
 {
     Size size = _src.size(), wholeSize;
     Point origin;
     int stype = _src.type(), sdepth = CV_MAT_DEPTH(stype), cn = CV_MAT_CN(stype),
-            esz = CV_ELEM_SIZE(stype), wdepth = std::max(std::max(sdepth, ddepth), CV_32F),
+            esz = CV_ELEM_SIZE(stype), wdepth = std::max(std::max(sdepth, ddepth), bdepth),
             dtype = CV_MAKE_TYPE(ddepth, cn);
     size_t src_step = _src.step(), src_offset = _src.offset();
     bool doubleSupport = ocl::Device::getDefault().doubleFPConfig() > 0;
@@ -3413,14 +3413,15 @@ static bool ocl_sepFilter2D_SinglePass(InputArray _src, OutputArray _dst,
 
     String opts = cv::format("-D BLK_X=%d -D BLK_Y=%d -D RADIUSX=%d -D RADIUSY=%d%s%s"
                              " -D srcT=%s -D convertToWT=%s -D WT=%s -D dstT=%s -D convertToDstT=%s"
-                             " -D %s -D srcT1=%s -D dstT1=%s -D CN=%d", (int)lt2[0], (int)lt2[1],
-                             row_kernel.cols / 2, col_kernel.cols / 2,
-                             ocl::kernelToStr(row_kernel, CV_32F, "KERNEL_MATRIX_X").c_str(),
-                             ocl::kernelToStr(col_kernel, CV_32F, "KERNEL_MATRIX_Y").c_str(),
+                             " -D %s -D srcT1=%s -D dstT1=%s -D CN=%d -D SHIFT_BITS=%d%s", 
+                             (int)lt2[0], (int)lt2[1], row_kernel.cols / 2, col_kernel.cols / 2,
+                             ocl::kernelToStr(row_kernel, wdepth, "KERNEL_MATRIX_X").c_str(),
+                             ocl::kernelToStr(col_kernel, wdepth, "KERNEL_MATRIX_Y").c_str(),
                              ocl::typeToStr(stype), ocl::convertTypeStr(sdepth, wdepth, cn, cvt[0]),
                              ocl::typeToStr(CV_MAKE_TYPE(wdepth, cn)), ocl::typeToStr(dtype),
                              ocl::convertTypeStr(wdepth, ddepth, cn, cvt[1]), borderMap[borderType],
-                             ocl::typeToStr(sdepth), ocl::typeToStr(ddepth), cn);
+                             ocl::typeToStr(sdepth), ocl::typeToStr(ddepth), cn, 2*shift_bits,
+                             int_arithm ? " -D INTEGER_ARITHMETIC" : "");
 
     ocl::Kernel k("sep_filter", ocl::imgproc::filterSep_singlePass_oclsrc, opts);
     if (k.empty())
@@ -3485,14 +3486,14 @@ static bool ocl_sepFilter2D( InputArray _src, OutputArray _dst, int ddepth,
         int_arithm = true;
     }
 
-    CV_OCL_RUN_(kernelY.cols <= 21 && kernelX.cols <= 21 && !int_arithm &&
+    CV_OCL_RUN_(kernelY.cols <= 21 && kernelX.cols <= 21 &&
                 imgSize.width > optimizedSepFilterLocalSize + anchor.x &&
                 imgSize.height > optimizedSepFilterLocalSize + anchor.y &&
                 (!(borderType & BORDER_ISOLATED) || _src.offset() == 0) &&
                 anchor == Point(kernelX.cols >> 1, kernelY.cols >> 1) &&
                 (d.isIntel() || (d.isAMD() && !d.hostUnifiedMemory())),
                 ocl_sepFilter2D_SinglePass(_src, _dst, kernelX, kernelY, delta,
-                                           borderType & ~BORDER_ISOLATED, ddepth), true)
+                                           borderType & ~BORDER_ISOLATED, ddepth, bdepth, int_arithm), true)
 
     UMat src = _src.getUMat();
     Size srcWholeSize; Point srcOffset;

modules/imgproc/src/opencl/filterSep_singlePass.cl

@@ -100,8 +100,8 @@
 // horizontal and vertical filter kernels
 // should be defined on host during compile time to avoid overhead
 #define DIG(a) a,
-__constant float mat_kernelX[] = { KERNEL_MATRIX_X };
-__constant float mat_kernelY[] = { KERNEL_MATRIX_Y };
+__constant WT mat_kernelX[] = { KERNEL_MATRIX_X };
+__constant WT mat_kernelY[] = { KERNEL_MATRIX_Y };
 
 __kernel void sep_filter(__global uchar* Src, int src_step, int srcOffsetX, int srcOffsetY, int height, int width,
                          __global uchar* Dst, int dst_step, int dst_offset, int dst_rows, int dst_cols, float delta)
@@ -159,12 +159,16 @@ __kernel void sep_filter(__global uchar* Src, int src_step, int srcOffsetX, int
     // do vertical filter pass
     // and store intermediate results to second local memory array
     int i, clocX = lix;
-    WT sum = 0.0f;
+    WT sum = (WT) 0;
     do
     {
-        sum = 0.0f;
+        sum = (WT) 0;
         for (i=0; i<=2*RADIUSY; i++)
+#ifndef INTEGER_ARITHMETIC
             sum = mad(lsmem[liy+i][clocX], mat_kernelY[i], sum);
+#else
+            sum = mad24(lsmem[liy+i][clocX], mat_kernelY[i], sum);
+#endif
         lsmemDy[liy][clocX] = sum;
         clocX += BLK_X;
     }
@@ -180,8 +184,13 @@ __kernel void sep_filter(__global uchar* Src, int src_step, int srcOffsetX, int
     // and calculate final result
     sum = 0.0f;
     for (i=0; i<=2*RADIUSX; i++)
+#ifndef INTEGER_ARITHMETIC
         sum = mad(lsmemDy[liy][lix+i], mat_kernelX[i], sum);
+#else
+        sum = mad24(lsmemDy[liy][lix+i], mat_kernelX[i], sum);
 
+    sum = (sum + (1 << (SHIFT_BITS-1))) >> SHIFT_BITS;
+#endif
     // store result into destination image
     storepix(convertToDstT(sum + (WT)(delta)), Dst + mad24(y, dst_step, mad24(x, DSTSIZE, dst_offset)));
 }