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Commit ddc33b02 authored by Andrey Filippov's avatar Andrey Filippov
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tested inverse mclt tile

parent d399f9d7
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Showing with 330 additions and 306 deletions
src/main/resources/TileProcessor.cuh
View file @ ddc33b02
...@@ -70,12 +70,19 @@ ...@@ -70,12 +70,19 @@
#define KERNELS_HOR 164 #define KERNELS_HOR 164
#define KERNELS_VERT 123 #define KERNELS_VERT 123
#define IMAGE_TILE_SIDE 18 #define IMAGE_TILE_SIDE 18
#define IMCLT_THREADS_PER_TILE 16
#define IMCLT_TILES_PER_BLOCK 4
#define KERNELS_STEP (1 << KERNELS_LSTEP) #define KERNELS_STEP (1 << KERNELS_LSTEP)
#define TILESX (IMG_WIDTH / DTT_SIZE) #define TILESX (IMG_WIDTH / DTT_SIZE)
#define TILESY (IMG_HEIGHT / DTT_SIZE) #define TILESY (IMG_HEIGHT / DTT_SIZE)
// increase row length by 1 so vertical passes will use different ports // increase row length by 1 so vertical passes will use different ports
#define THREADSX (DTT_SIZE) #define THREADSX (DTT_SIZE)
#define DTT_SIZE1 (DTT_SIZE + 1) #define DTT_SIZE1 (DTT_SIZE + 1)
#define DTT_SIZE2 (2 * DTT_SIZE)
#define DTT_SIZE21 (DTT_SIZE2 + 1)
#define BAYER_RED 0 #define BAYER_RED 0
#define BAYER_BLUE 1 #define BAYER_BLUE 1
...@@ -90,10 +97,10 @@ ...@@ -90,10 +97,10 @@
#define DBG_TILE_X 174 #define DBG_TILE_X 174
#define DBG_TILE_Y 118 #define DBG_TILE_Y 118
//#define DBG_TILE (DBG_TILE_Y * 324 + DBG_TILE_X) #define DBG_TILE (DBG_TILE_Y * 324 + DBG_TILE_X)
//#define DEBUG1 1 //#define DEBUG1 1
//#define DEBUG2 1 //#define DEBUG2 1
//#undef DEBUG2 #define DEBUG3 1
//56494 //56494
// struct tp_task // struct tp_task
//#define TASK_SIZE 12 //#define TASK_SIZE 12
...@@ -120,7 +127,7 @@ def setup_hwindow(n=8, l=4): ...@@ -120,7 +127,7 @@ def setup_hwindow(n=8, l=4):
print("__constant__ float HWINDOW[] = {", end="") # print("__constant__ float HWINDOW[] = {", end="") #
for i in range (n): for i in range (n):
print("%ff"%(hwindow[i]), end ="") print("%ff"%(hwindow[i]), end ="")
if i == (2*n-1): if i == (n-1):
print("};") print("};")
elif ((i + 1) % l) == 0: elif ((i + 1) % l) == 0:
print(",") print(",")
...@@ -128,6 +135,19 @@ def setup_hwindow(n=8, l=4): ...@@ -128,6 +135,19 @@ def setup_hwindow(n=8, l=4):
else: else:
print(", ",end="") print(", ",end="")
def setup_hwindow2(n=8, l=4):
hwindow = [0.5*math.sin(math.pi*((1.0+2*i)/(4*n))) for i in range(2*n)]
print("__constant__ float HWINDOW2[] = {", end="") #
for i in range (n):
print("%ff"%(hwindow[i]), end ="")
if i == (n-1):
print("};")
elif ((i + 1) % l) == 0:
print(",")
print(" ", end ="")
else:
print(", ",end="")
def get_fold_rindices(n=8): def get_fold_rindices(n=8):
n1 = n>>1; n1 = n>>1;
rind = [0] * (2 * n) # reverse indices rind = [0] * (2 * n) # reverse indices
...@@ -181,12 +201,23 @@ def get_fold_rindices(n=8): ...@@ -181,12 +201,23 @@ def get_fold_rindices(n=8):
print('0x%2x}};'%(rind1[-1])) print('0x%2x}};'%(rind1[-1]))
print("__constant__ int fold_inc[]= {0x%08x, 0x%08x};"%(inc_e, inc_o)) print("__constant__ int fold_inc[]= {0x%08x, 0x%08x};"%(inc_e, inc_o))
def set_imclt_sa(stride=9):
sa8 =[0x24,0x2c,0x34,0x3c,0x3c,0x34,0x2c,0x24,0x1c,0x14,0x0c,0x04,0x04,0x0c,0x14,0x1c]
sa8s = [d // 8 + (d % 8) * stride for d in sa8]
print("__constant__ int imclt_indx9[16] = {", end="") #
for d in sa8s[:-1]:
print('0x%02x,'%(d), end="")
print('0x%2x};'%(sa8s[-1]))
*/ */
__constant__ float HWINDOW[] = {0.098017f, 0.290285f, 0.471397f, 0.634393f, __constant__ float HWINDOW[] = {0.098017f, 0.290285f, 0.471397f, 0.634393f,
0.773010f, 0.881921f, 0.956940f, 0.995185f}; 0.773010f, 0.881921f, 0.956940f, 0.995185f};
__constant__ float HWINDOW2[] = {0.049009f, 0.145142f, 0.235698f, 0.317197f,
0.386505f, 0.440961f, 0.478470f, 0.497592f};
// Offsets in 8x8 DCT_CC/DST_SC tile for the first 2 lines of the 16x16 bayer image // Offsets in 8x8 DCT_CC/DST_SC tile for the first 2 lines of the 16x16 bayer image
__constant__ int fold_indx2[2][16] = {{0x24,0x25,0x26,0x27,0x27,0x26,0x25,0x24,0x23,0x22,0x21,0x20,0x20,0x21,0x22,0x23}, __constant__ int fold_indx2[2][16] = {{0x24,0x25,0x26,0x27,0x27,0x26,0x25,0x24,0x23,0x22,0x21,0x20,0x20,0x21,0x22,0x23},
{0x2c,0x2d,0x2e,0x2f,0x2f,0x2e,0x2d,0x2c,0x2b,0x2a,0x29,0x28,0x28,0x29,0x2a,0x2b}}; {0x2c,0x2d,0x2e,0x2f,0x2f,0x2e,0x2d,0x2c,0x2b,0x2a,0x29,0x28,0x28,0x29,0x2a,0x2b}};
...@@ -195,21 +226,34 @@ __constant__ int fold_indx2[2][16] = {{0x24,0x25,0x26,0x27,0x27,0x26,0x25,0x24,0 ...@@ -195,21 +226,34 @@ __constant__ int fold_indx2[2][16] = {{0x24,0x25,0x26,0x27,0x27,0x26,0x25,0x24,0
// addd to the current index and result should be AND-ed with 0x3f. inc_e is for even rows (0,2, ...) while inc_o - for odd ones (1,3,) // addd to the current index and result should be AND-ed with 0x3f. inc_e is for even rows (0,2, ...) while inc_o - for odd ones (1,3,)
__constant__ int fold_inc[]= {0x02feee12, 0x021eeef2}; __constant__ int fold_inc[]= {0x02feee12, 0x021eeef2};
// index table for convolutions //__constant__ int imclt_indx[16] = {0x24,0x2c,0x34,0x3c,0x3c,0x34,0x2c,0x24,0x1c,0x22,0x21,0x20,0x20,0x21,0x22,0x23};
__constant__ int zi[4][4] = {{ 0, -1, -2, 3}, //__constant__ int imclt_indx9[16] = {0x28,0x31,0x3a,0x43,0x43,0x3a,0x31,0x28,0x1f,0x16,0x0d,0x04,0x04,0x0d,0x16,0x1f};
{ 1, 0, -3, -2}, __constant__ int imclt_indx9[16] = {0x28,0x29,0x2a,0x2b,0x2b,0x2a,0x29,0x28,0x27,0x26,0x25,0x24,0x24,0x25,0x26,0x27};
{ 2, -3, 0, -1},
{ 3, 2, 1, 0}};
// Hope that if 2 outer indices are known at compile time there will be no integer multiplications
__constant__ int za[4][4] = {{ 0, 1, 2, 3}, __constant__ float idct_signs[4][4][4] ={
{ 1, 0, 3, 2}, { // quadrant 0, each elements corresponds to 4x4 pixel output, covering altogether 16x16
{ 2, 3, 0, 1}, { 1,-1,-1,-1},
{ 3, 2, 1, 0}}; {-1, 1, 1, 1},
__constant__ int zs[4][4] = {{ 0, -1, -1, 1}, {-1, 1, 1, 1},
{ 1, 0, -1, -1}, {-1, 1, 1, 1}
{ 1, -1, 0, -1}, },{ // quadrant 1, each elements corresponds to 4x4 pixel output, covering altogether 16x16
{ 1, 1, 1, 0}}; { 1, 1, 1,-1},
{-1,-1,-1, 1},
{-1,-1,-1, 1},
{-1,-1,-1, 1}
},{ // quadrant 2, each elements corresponds to 4x4 pixel output, covering altogether 16x16
{ 1,-1,-1,-1},
{ 1,-1,-1,-1},
{ 1,-1,-1,-1},
{-1, 1, 1, 1}
},{ // quadrant 3, each elements corresponds to 4x4 pixel output, covering altogether 16x16
{ 1, 1, 1,-1},
{ 1, 1, 1,-1},
{ 1, 1, 1,-1},
{-1,-1,-1, 1}
}};
__device__ void convertCorrectTile( __device__ void convertCorrectTile(
...@@ -220,13 +264,10 @@ __device__ void convertCorrectTile( ...@@ -220,13 +264,10 @@ __device__ void convertCorrectTile(
const int color, const int color,
const float centerX, const float centerX,
const float centerY, const float centerY,
const short tx,
const short ty,
const size_t dstride, // in floats (pixels) const size_t dstride, // in floats (pixels)
// clt_tile[0] - before rotation, [0][0] - R:DCT/DCT, [0][1] - B:DCT/DCT, [0][2] - G:DCT/DCT, [0][3] - G:DST/DCT,
// clt_tile[1], clt_tile[2], and clt_tile[3] - after rotation, 4 quadrants each
// changed, above is wrong now
// float clt_tile [4][DTT_SIZE][DTT_SIZE1], // +1 to alternate column ports
float * clt_tile, // [4][DTT_SIZE][DTT_SIZE1], // +1 to alternate column ports float * clt_tile, // [4][DTT_SIZE][DTT_SIZE1], // +1 to alternate column ports
// float clt_kernels [4][DTT_SIZE][DTT_SIZE1], // +1 to alternate column ports
float * clt_kernels, // [4][DTT_SIZE][DTT_SIZE1], // +1 to alternate column ports float * clt_kernels, // [4][DTT_SIZE][DTT_SIZE1], // +1 to alternate column ports
int int_topleft [2], int int_topleft [2],
float residual_shift [2], float residual_shift [2],
...@@ -238,26 +279,19 @@ __device__ void convertCorrectTile( ...@@ -238,26 +279,19 @@ __device__ void convertCorrectTile(
__device__ void shiftTileHor( __device__ void shiftTileHor(
float * clt_tile, // [4][DTT_SIZE][DTT_SIZE1], // +1 to alternate column ports float * clt_tile, // [4][DTT_SIZE][DTT_SIZE1], // +1 to alternate column ports
float residual_shift ); float residual_shift );
__device__ void shiftTileHor1(
float clt_tile [4][DTT_SIZE][DTT_SIZE1], // +1 to alternate column ports
float residual_shift );
// Fractional pixel shift (phase rotation), vertical. In-place. // Fractional pixel shift (phase rotation), vertical. In-place.
__device__ void shiftTileVert( __device__ void shiftTileVert(
float *clt_tile, // [4][DTT_SIZE][DTT_SIZE1], // +1 to alternate column ports float *clt_tile, // [4][DTT_SIZE][DTT_SIZE1], // +1 to alternate column ports
float residual_shift ); float residual_shift );
__device__ void shiftTileVert1(
float clt_tile [4][DTT_SIZE][DTT_SIZE1], // +1 to alternate column ports
float residual_shift );
__device__ void convolveTiles( __device__ void convolveTiles(
float* clt_tile, // [4][DTT_SIZE][DTT_SIZE1], // 4 quadrants of the clt data, rows extended to optimize shared ports float* clt_tile, // [4][DTT_SIZE][DTT_SIZE1], // 4 quadrants of the clt data, rows extended to optimize shared ports
float* kernel); // [4][DTT_SIZE][DTT_SIZE1]) // 4 quadrants of the CLT kernel (DTT3 converted) float* kernel); // [4][DTT_SIZE][DTT_SIZE1]) // 4 quadrants of the CLT kernel (DTT3 converted)
__device__ void imclt(
__device__ void convolveTiles0( float * clt_tile, // [4][DTT_SIZE][DTT_SIZE1], // +1 to alternate column ports [4][8][9]
float clt_tile [4][DTT_SIZE][DTT_SIZE1], // 4 quadrants of the clt data, rows extended to optimize shared ports float * mclt_tile ); // [2* DTT_SIZE][DTT_SIZE1+ DTT_SIZE], // +1 to alternate column ports[16][17]
float kernel [4][DTT_SIZE][DTT_SIZE1]); // 4 quadrants of the CLT kernel (DTT3 converted) __device__ void imclt(
float * clt_tile, // [4][DTT_SIZE][DTT_SIZE1], // +1 to alternate column ports [4][8][9]
float * mclt_tile ); // [2* DTT_SIZE][DTT_SIZE1+ DTT_SIZE], // +1 to alternate column ports[16][17]
extern "C" extern "C"
__global__ void tileProcessor( __global__ void tileProcessor(
...@@ -305,27 +339,15 @@ __global__ void tileProcessor( ...@@ -305,27 +339,15 @@ __global__ void tileProcessor(
} }
__syncthreads();// __syncwarp(); __syncthreads();// __syncwarp();
// set memory for CLT result (per tile, per camera, per color, per clt, per row, per column
// clt_tile[][0] - before rotation, [][0][0] - R:DCT/DCT, [][0][1] - B:DCT/DCT, [][0][2] - G:DCT/DCT, [][0][3] - G:DST/DCT,
// clt_tile[][1], clt_tile[][2], and clt_tile[][3] - after rotation, 4 quadrants each
// changed, above is wrong now
/// __shared__ float clt_tile [TILES_PER_BLOCK][NUM_CAMS][NUM_COLORS][4][DTT_SIZE][DTT_SIZE1];
__shared__ float clt_tile [TILES_PER_BLOCK][4][DTT_SIZE][DTT_SIZE1]; __shared__ float clt_tile [TILES_PER_BLOCK][4][DTT_SIZE][DTT_SIZE1];
// sharing shared memory for cameras as they are corrected one after another
// TODO: evaluate total shared memory usage, maybe this sharing is not needed
__shared__ float clt_kernels [TILES_PER_BLOCK][4][DTT_SIZE][DTT_SIZE1]; // +1 to alternate column ports __shared__ float clt_kernels [TILES_PER_BLOCK][4][DTT_SIZE][DTT_SIZE1]; // +1 to alternate column ports
__shared__ int int_topleft [TILES_PER_BLOCK][2]; __shared__ int int_topleft [TILES_PER_BLOCK][2];
__shared__ float residual_shift [TILES_PER_BLOCK][2]; __shared__ float residual_shift [TILES_PER_BLOCK][2];
__shared__ float window_hor_cos [TILES_PER_BLOCK][2*DTT_SIZE]; __shared__ float window_hor_cos [TILES_PER_BLOCK][2*DTT_SIZE];
__shared__ float window_hor_sin [TILES_PER_BLOCK][2*DTT_SIZE]; __shared__ float window_hor_sin [TILES_PER_BLOCK][2*DTT_SIZE];
__shared__ float window_vert_cos [TILES_PER_BLOCK][2*DTT_SIZE]; __shared__ float window_vert_cos [TILES_PER_BLOCK][2*DTT_SIZE];
//IMAGE_TILE_SIDE // process each camera,l each color in series (to reduce shared memory)
// process each camera in series
for (int ncam = 0; ncam < NUM_CAMS; ncam++){ for (int ncam = 0; ncam < NUM_CAMS; ncam++){
for (int color = 0; color < NUM_COLORS; color++){ for (int color = 0; color < NUM_COLORS; color++){
convertCorrectTile( convertCorrectTile(
...@@ -336,6 +358,8 @@ __global__ void tileProcessor( ...@@ -336,6 +358,8 @@ __global__ void tileProcessor(
color, // const int color, color, // const int color,
tt[tile_in_block].xy[ncam][0], // const float centerX, tt[tile_in_block].xy[ncam][0], // const float centerX,
tt[tile_in_block].xy[ncam][1], // const float centerY, tt[tile_in_block].xy[ncam][1], // const float centerY,
tt[tile_in_block].tx, // const short tx,
tt[tile_in_block].ty, // const short ty,
dstride, // size_t dstride, // in floats (pixels) dstride, // size_t dstride, // in floats (pixels)
(float * )(clt_tile [tile_in_block]), // float clt_tile [TILES_PER_BLOCK][NUM_CAMS][NUM_COLORS][4][DTT_SIZE][DTT_SIZE]) (float * )(clt_tile [tile_in_block]), // float clt_tile [TILES_PER_BLOCK][NUM_CAMS][NUM_COLORS][4][DTT_SIZE][DTT_SIZE])
(float * )(clt_kernels[tile_in_block]), // float clt_tile [NUM_COLORS][4][DTT_SIZE][DTT_SIZE], (float * )(clt_kernels[tile_in_block]), // float clt_tile [NUM_COLORS][4][DTT_SIZE][DTT_SIZE],
...@@ -464,234 +488,12 @@ __device__ void convolveTiles( ...@@ -464,234 +488,12 @@ __device__ void convolveTiles(
} }
} }
__device__ void shiftTileHor2(
float *fclt_tile, // [4][DTT_SIZE][DTT_SIZE1], // 4 quadrants of the clt data, rows extended to optimize shared ports
float residual_shift )
{
float (*clt_tile) [4][DTT_SIZE][DTT_SIZE1] = (float(*)[4][DTT_SIZE][DTT_SIZE1]) fclt_tile;
int j = threadIdx.x;
float x = residual_shift * ((j << 1 ) +1) * (0.5f/ DTT_SIZE);
float ch = cospif(x);
float sh = sinpif(x);
#pragma unroll
for (int i = 0; i < DTT_SIZE; i++) {
float t = (*clt_tile)[0][i][j] * ch - (*clt_tile)[1][i][j] * sh;
(*clt_tile)[1][i][j] = (*clt_tile)[0][i][j] * sh + (*clt_tile)[1][i][j] * ch;
(*clt_tile)[0][i][j] = t;
t = (*clt_tile)[2][i][j] * ch - (*clt_tile)[3][i][j] * sh;
(*clt_tile)[3][i][j] = (*clt_tile)[2][i][j] * sh + (*clt_tile)[3][i][j] * ch;
(*clt_tile)[2][i][j] = t;
}
}
__device__ void shiftTileHor1(
float clt_tile [4][DTT_SIZE][DTT_SIZE1], // +1 to alternate column ports
float residual_shift )
{
int j = threadIdx.x;
float x = residual_shift * ((j << 1 ) +1) * (0.5f/ DTT_SIZE);
float ch = cospif(x);
float sh = sinpif(x);
#pragma unroll
for (int i = 0; i < DTT_SIZE; i++) {
float t = clt_tile[0][i][j] * ch - clt_tile[1][i][j] * sh;
clt_tile[1][i][j] = clt_tile[0][i][j] * sh + clt_tile[1][i][j] * ch;
clt_tile[0][i][j] = t;
t = clt_tile[2][i][j] * ch - clt_tile[3][i][j] * sh;
clt_tile[3][i][j] = clt_tile[2][i][j] * sh + clt_tile[3][i][j] * ch;
clt_tile[2][i][j] = t;
}
}
// Fractional pixel shift (phase rotation), vertical. In-place.
__device__ void shiftTileVert0(
float clt_tile [4][DTT_SIZE][DTT_SIZE1], // +1 to alternate column ports
float residual_shift)
{
int j = threadIdx.x;
float x = residual_shift * ((j << 1 ) +1) * (0.5f/ DTT_SIZE);
float ch = cospif(x);
float sh = sinpif(x);
#pragma unroll
for (int i = 0; i < DTT_SIZE; i++) {
float t = clt_tile[0][j][i] * ch - clt_tile[1][j][i] * sh;
clt_tile[1][j][i] = clt_tile[0][j][i] * sh + clt_tile[1][j][i] * ch;
clt_tile[0][j][i] = t;
t = clt_tile[2][j][i] * ch - clt_tile[3][j][i] * sh;
clt_tile[3][j][i] = clt_tile[2][j][i] * sh + clt_tile[3][j][i] * ch;
clt_tile[2][j][i] = t;
}
}
__device__ void shiftTileVert1(
float clt_tile [4][DTT_SIZE][DTT_SIZE1], // +1 to alternate column ports
float residual_shift)
{
int j = threadIdx.x;
float x = residual_shift * ((j << 1 ) +1) * (0.5f/ DTT_SIZE);
float ch = cospif(x);
float sh = sinpif(x);
#pragma unroll
for (int i = 0; i < DTT_SIZE; i++) {
float t = clt_tile[0][j][i] * ch - clt_tile[2][j][i] * sh;
clt_tile[2][j][i] = clt_tile[0][j][i] * sh + clt_tile[2][j][i] * ch;
clt_tile[0][j][i] = t;
t = clt_tile[1][j][i] * ch - clt_tile[3][j][i] * sh;
clt_tile[3][j][i] = clt_tile[1][j][i] * sh + clt_tile[3][j][i] * ch;
clt_tile[1][j][i] = t;
}
}
__device__ void shiftTileVert2(
float *fclt_tile, // [4][DTT_SIZE][DTT_SIZE1], // 4 quadrants of the clt data, rows extended to optimize shared ports
float residual_shift)
{
float (*clt_tile) [4][DTT_SIZE][DTT_SIZE1] = (float(*)[4][DTT_SIZE][DTT_SIZE1]) fclt_tile;
int j = threadIdx.x;
float x = residual_shift * ((j << 1 ) +1) * (0.5f/ DTT_SIZE);
float ch = cospif(x);
float sh = sinpif(x);
#pragma unroll
for (int i = 0; i < DTT_SIZE; i++) {
float t = (*clt_tile)[0][j][i] * ch - (*clt_tile)[2][j][i] * sh;
(*clt_tile)[2][j][i] = (*clt_tile)[0][j][i] * sh + (*clt_tile)[2][j][i] * ch;
(*clt_tile)[0][j][i] = t;
t = (*clt_tile)[1][j][i] * ch - (*clt_tile)[3][j][i] * sh;
(*clt_tile)[3][j][i] = (*clt_tile)[1][j][i] * sh + (*clt_tile)[3][j][i] * ch;
(*clt_tile)[1][j][i] = t;
}
}
// Fractional pixel shift (phase rotation), vertical. In-place.
__device__ void convolveTiles1(
float clt_tile [4][DTT_SIZE][DTT_SIZE1], // 4 quadrants of the clt data, rows extended to optimize shared ports
float kernel [4][DTT_SIZE][DTT_SIZE1]) // 4 quadrants of the CLT kernel (DTT3 converted)
{
int j = threadIdx.x;
for (int i = 0; i < DTT_SIZE; i++){
float r0 = 0;
float r1 = 0;
float r2 = 0;
float r3 = 0;
for (int k = 0; k < 4; k++){
r0 += zs[0][k]*clt_tile[za[0][k]][j][i] * kernel[k][j][i];
r1 += zs[1][k]*clt_tile[za[1][k]][j][i] * kernel[k][j][i];
r2 += zs[2][k]*clt_tile[za[2][k]][j][i] * kernel[k][j][i];
r3 += zs[3][k]*clt_tile[za[3][k]][j][i] * kernel[k][j][i];
}
clt_tile[0][j][i]= r0;
clt_tile[1][j][i]= r1;
clt_tile[2][j][i]= r2;
clt_tile[3][j][i]= r3;
}
}
__device__ void convolveTiles0(
float clt_tile [4][DTT_SIZE][DTT_SIZE1], // 4 quadrants of the clt data, rows extended to optimize shared ports
float kernel [4][DTT_SIZE][DTT_SIZE1]) // 4 quadrants of the CLT kernel (DTT3 converted)
{
int j = threadIdx.x;
for (int i = 0; i < DTT_SIZE; i++){
float r0 = 0;
float r1 = 0;
float r2 = 0;
float r3 = 0;
for (int k = 0; k < 4; k++){
if (zi[0][k] < 0) r0 -= clt_tile[-zi[0][k]][j][i] * kernel[k][j][i];
else r0 += clt_tile[ zi[0][k]][j][i] * kernel[k][j][i];
if (zi[1][k] < 0) r1 -= clt_tile[-zi[1][k]][j][i] * kernel[k][j][i];
else r1 += clt_tile[ zi[1][k]][j][i] * kernel[k][j][i];
if (zi[2][k] < 0) r2 -= clt_tile[-zi[2][k]][j][i] * kernel[k][j][i];
else r2 += clt_tile[ zi[2][k]][j][i] * kernel[k][j][i];
if (zi[3][k] < 0) r3 -= clt_tile[-zi[3][k]][j][i] * kernel[k][j][i];
else r3 += clt_tile[ zi[3][k]][j][i] * kernel[k][j][i];
}
clt_tile[0][j][i]= r0;
clt_tile[1][j][i]= r1;
clt_tile[2][j][i]= r2;
clt_tile[3][j][i]= r3;
}
}
__device__ void convolveTiles2(
float *fclt_tile, // [4][DTT_SIZE][DTT_SIZE1], // 4 quadrants of the clt data, rows extended to optimize shared ports
float *fkernel) // [4][DTT_SIZE][DTT_SIZE1]) // 4 quadrants of the CLT kernel (DTT3 converted)
{
float (*clt_tile) [4][DTT_SIZE][DTT_SIZE1] = (float(*)[4][DTT_SIZE][DTT_SIZE1]) fclt_tile;
float (*kernel) [4][DTT_SIZE][DTT_SIZE1] = (float(*)[4][DTT_SIZE][DTT_SIZE1]) fkernel;
int j = threadIdx.x;
for (int i = 0; i < DTT_SIZE; i++){
float r0 = 0;
float r1 = 0;
float r2 = 0;
float r3 = 0;
for (int k = 0; k < 4; k++){
if (zi[0][k] < 0) r0 -= (*clt_tile)[-zi[0][k]][j][i] * (*kernel)[k][j][i];
else r0 += (*clt_tile)[ zi[0][k]][j][i] * (*kernel)[k][j][i];
if (zi[1][k] < 0) r1 -= (*clt_tile)[-zi[1][k]][j][i] * (*kernel)[k][j][i];
else r1 += (*clt_tile)[ zi[1][k]][j][i] * (*kernel)[k][j][i];
if (zi[2][k] < 0) r2 -= (*clt_tile)[-zi[2][k]][j][i] * (*kernel)[k][j][i];
else r2 += (*clt_tile)[ zi[2][k]][j][i] * (*kernel)[k][j][i];
if (zi[3][k] < 0) r3 -= (*clt_tile)[-zi[3][k]][j][i] * (*kernel)[k][j][i];
else r3 += (*clt_tile)[ zi[3][k]][j][i] * (*kernel)[k][j][i];
}
(*clt_tile)[0][j][i]= r0;
(*clt_tile)[1][j][i]= r1;
(*clt_tile)[2][j][i]= r2;
(*clt_tile)[3][j][i]= r3;
}
}
__device__ void debug_print_clt(
float clt_tile [4][DTT_SIZE][DTT_SIZE1], // +1 to alternate column ports)
const int color,
int mask)
{
printf("----------- Color = %d -----------\n",color);
for (int dbg_quadrant = 0; dbg_quadrant < 4; dbg_quadrant++){
printf("----------- Quadrant (c(h)-c(v), s-c, c-s, s-s) = %d -----------\n",dbg_quadrant);
if ((mask >> dbg_quadrant) & 1) {
for (int dbg_row = 0; dbg_row < DTT_SIZE; dbg_row++){
for (int dbg_col = 0; dbg_col < DTT_SIZE; dbg_col++){
printf ("%10.5f ", clt_tile[dbg_quadrant][dbg_row][dbg_col]);
}
printf("\n");
}
}
printf("\n");
}
}
__device__ void debug_print_clt1( __device__ void debug_print_clt1(
float * clt_tile, // [4][DTT_SIZE][DTT_SIZE1], // +1 to alternate column ports) float * clt_tile, // [4][DTT_SIZE][DTT_SIZE1], // +1 to alternate column ports)
const int color, const int color,
int mask) int mask)
{ {
printf("----------- Color = %d -----------\n",color); if (color >= 0) printf("----------- Color = %d -----------\n",color);
for (int dbg_quadrant = 0; dbg_quadrant < 4; dbg_quadrant++){ for (int dbg_quadrant = 0; dbg_quadrant < 4; dbg_quadrant++){
printf("----------- Quadrant (c(h)-c(v), s-c, c-s, s-s) = %d -----------\n",dbg_quadrant); printf("----------- Quadrant (c(h)-c(v), s-c, c-s, s-s) = %d -----------\n",dbg_quadrant);
if ((mask >> dbg_quadrant) & 1) { if ((mask >> dbg_quadrant) & 1) {
...@@ -706,9 +508,21 @@ __device__ void debug_print_clt1( ...@@ -706,9 +508,21 @@ __device__ void debug_print_clt1(
} }
} }
__device__ void debug_print_mclt(
float * mclt_tile, // [4][DTT_SIZE][DTT_SIZE1], // +1 to alternate column ports)
const int color)
{
if (color >= 0) printf("----------- Color = %d -----------\n",color);
for (int dbg_row = 0; dbg_row < DTT_SIZE2; dbg_row++){
for (int dbg_col = 0; dbg_col < DTT_SIZE2; dbg_col++){
printf ("%10.5f ", mclt_tile[dbg_row *DTT_SIZE21 + dbg_col]);
}
printf("\n");
}
printf("\n");
}
// Uses 32 threads
__device__ void convertCorrectTile( __device__ void convertCorrectTile(
struct CltExtra * gpu_kernel_offsets, // [tileY][tileX][color] struct CltExtra * gpu_kernel_offsets, // [tileY][tileX][color]
float * gpu_kernels, // [tileY][tileX][color] float * gpu_kernels, // [tileY][tileX][color]
...@@ -717,13 +531,10 @@ __device__ void convertCorrectTile( ...@@ -717,13 +531,10 @@ __device__ void convertCorrectTile(
const int color, const int color,
const float centerX, const float centerX,
const float centerY, const float centerY,
const short tx,
const short ty,
const size_t dstride, // in floats (pixels) const size_t dstride, // in floats (pixels)
// clt_tile[0] - before rotation, [0][0] - R:DCT/DCT, [0][1] - B:DCT/DCT, [0][2] - G:DCT/DCT, [0][3] - G:DST/DCT,
// clt_tile[1], clt_tile[2], and clt_tile[3] - after rotation, 4 quadrants each
// changed, above is wrong now
// float clt_tile [4][DTT_SIZE][DTT_SIZE1], // +1 to alternate column ports
float * clt_tile, // [4][DTT_SIZE][DTT_SIZE1], // +1 to alternate column ports float * clt_tile, // [4][DTT_SIZE][DTT_SIZE1], // +1 to alternate column ports
// float clt_kernels [4][DTT_SIZE][DTT_SIZE1], // +1 to alternate column ports
float * clt_kernels, // [4][DTT_SIZE][DTT_SIZE1], // +1 to alternate column ports float * clt_kernels, // [4][DTT_SIZE][DTT_SIZE1], // +1 to alternate column ports
int int_topleft [2], int int_topleft [2],
float residual_shift [2], float residual_shift [2],
...@@ -732,10 +543,6 @@ __device__ void convertCorrectTile( ...@@ -732,10 +543,6 @@ __device__ void convertCorrectTile(
float window_vert_cos [2*DTT_SIZE]) float window_vert_cos [2*DTT_SIZE])
{ {
/// __shared__ float window_hor_cos [NUM_COLORS][2*DTT_SIZE];
/// __shared__ float window_hor_sin [NUM_COLORS][2*DTT_SIZE];
/// __shared__ float window_vert_cos [NUM_COLORS][2*DTT_SIZE];
// get correct kernel tile, then use 2 threads per kernel and image // get correct kernel tile, then use 2 threads per kernel and image
int ktileX, ktileY; int ktileX, ktileY;
int kernel_index; // common for all coors int kernel_index; // common for all coors
...@@ -781,21 +588,9 @@ __device__ void convertCorrectTile( ...@@ -781,21 +588,9 @@ __device__ void convertCorrectTile(
*kernelp = *kernel_src; *kernelp = *kernel_src;
kernelp+=DTT_SIZE1; kernelp+=DTT_SIZE1;
kernel_src+=THREADSX; kernel_src+=THREADSX;
/*
*kernelp = *kernel_src;
kernelp+=DTT_SIZE1;
kernel_src+=THREADSX;
*kernelp = *kernel_src;
kernelp+=DTT_SIZE1;
kernel_src+=THREADSX;
*kernelp = *kernel_src;
kernelp+=DTT_SIZE1;
kernel_src+=THREADSX;
*/
} }
// Calculate offsets and prepare windows (all colors): // Calculate offsets and prepare windows (all colors):
// int kernel_full_index = kernel_index + color;
struct CltExtra * clt_extra = &gpu_kernel_offsets[kernel_full_index]; struct CltExtra * clt_extra = &gpu_kernel_offsets[kernel_full_index];
px = centerX - DTT_SIZE - (clt_extra->data_x + clt_extra->dxc_dx * kdx + clt_extra->dxc_dy * kdy) ; // fractional left corner px = centerX - DTT_SIZE - (clt_extra->data_x + clt_extra->dxc_dx * kdx + clt_extra->dxc_dy * kdy) ; // fractional left corner
...@@ -884,9 +679,6 @@ __device__ void convertCorrectTile( ...@@ -884,9 +679,6 @@ __device__ void convertCorrectTile(
for (int gpass = 0; gpass < (color0 + 1); gpass++) { // Only once for R, B, twice - for G for (int gpass = 0; gpass < (color0 + 1); gpass++) { // Only once for R, B, twice - for G
int col_tl = int_topleft[0]; // + (threadIdx.x << 1); int col_tl = int_topleft[0]; // + (threadIdx.x << 1);
int row_tl = int_topleft[1]; int row_tl = int_topleft[1];
// int local_col = ((col_tl & 1) ^ BAYER_RED_COL ^ color0) + (threadIdx.x << 1);
// int local_row = ((row_tl & 1) ^ BAYER_RED_ROW ^ color0);
// for red, blue and green, pass 0 // for red, blue and green, pass 0
int local_col = ((col_tl & 1) ^ (BAYER_RED_COL ^ color0 ^ color1 ^ gpass)) + (threadIdx.x << 1); // green red row: invert column from red int local_col = ((col_tl & 1) ^ (BAYER_RED_COL ^ color0 ^ color1 ^ gpass)) + (threadIdx.x << 1); // green red row: invert column from red
int local_row = ((row_tl & 1) ^ BAYER_RED_ROW ^ gpass); // use red row int local_row = ((row_tl & 1) ^ BAYER_RED_ROW ^ gpass); // use red row
...@@ -895,8 +687,6 @@ __device__ void convertCorrectTile( ...@@ -895,8 +687,6 @@ __device__ void convertCorrectTile(
int dtt_offset = fold_indx2[local_row][local_col]; int dtt_offset = fold_indx2[local_row][local_col];
int dtt_offset_inc = fold_inc[local_row]; int dtt_offset_inc = fold_inc[local_row];
// float *dct_buf = (float *) clt_tile[ gpass << 1];
// float *dst_buf = (float *) clt_tile[(gpass << 1)+1]; // **** only used for green
float *dct_buf = clt_tile + ((gpass << 1) * (DTT_SIZE * DTT_SIZE1)); float *dct_buf = clt_tile + ((gpass << 1) * (DTT_SIZE * DTT_SIZE1));
float *dst_buf = clt_tile + (((gpass << 1) + 1) * (DTT_SIZE * DTT_SIZE1)); // **** only used for green float *dst_buf = clt_tile + (((gpass << 1) + 1) * (DTT_SIZE * DTT_SIZE1)); // **** only used for green
...@@ -904,10 +694,9 @@ __device__ void convertCorrectTile( ...@@ -904,10 +694,9 @@ __device__ void convertCorrectTile(
float *image_p = gpu_images + dstride * (row_tl + local_row)+ col_tl + local_col; float *image_p = gpu_images + dstride * (row_tl + local_row)+ col_tl + local_col;
#pragma unroll #pragma unroll
for (int i = 0; i < 8; i++) { for (int i = 0; i < 8; i++) {
// float d = (*image_p) * window_vert_cos[local_row]; //warp illegal address (0,2,1) float d = (*image_p) * window_vert_cos[local_row]; //warp illegal address (0,2,1)
float d = (*image_p); // float d = (*image_p);
d *= window_vert_cos[local_row]; //warp illegal address (0,2,1) // d *= window_vert_cos[local_row]; //warp illegal address (0,2,1)
int dtt_offset1 = dtt_offset + (dtt_offset >> 3); // converting for 9-long rows (DTT_SIZE1) int dtt_offset1 = dtt_offset + (dtt_offset >> 3); // converting for 9-long rows (DTT_SIZE1)
dct_buf[dtt_offset1] = d * hwind_cos; dct_buf[dtt_offset1] = d * hwind_cos;
dst_buf[dtt_offset1] = d * hwind_sin; // **** only used for green dst_buf[dtt_offset1] = d * hwind_sin; // **** only used for green
...@@ -972,7 +761,6 @@ __device__ void convertCorrectTile( ...@@ -972,7 +761,6 @@ __device__ void convertCorrectTile(
#endif #endif
dctiv_nodiverg( // all colors dctiv_nodiverg( // all colors
// clt_tile[0][threadIdx.x], // pointer to start of row
clt_tile + (DTT_SIZE1 * threadIdx.x), // [0][threadIdx.x], // pointer to start of row clt_tile + (DTT_SIZE1 * threadIdx.x), // [0][threadIdx.x], // pointer to start of row
1); //int inc); 1); //int inc);
if (color == BAYER_GREEN){ if (color == BAYER_GREEN){
...@@ -1008,7 +796,6 @@ __device__ void convertCorrectTile( ...@@ -1008,7 +796,6 @@ __device__ void convertCorrectTile(
__syncthreads();// __syncwarp(); __syncthreads();// __syncwarp();
#endif #endif
// Replicate DTT, so non-bayer can still use same in-place rotation code // Replicate DTT, so non-bayer can still use same in-place rotation code
float *src, *dst; float *src, *dst;
int negate; // , dst_inc; int negate; // , dst_inc;
...@@ -1086,7 +873,6 @@ __device__ void convertCorrectTile( ...@@ -1086,7 +873,6 @@ __device__ void convertCorrectTile(
__syncthreads();// __syncwarp(); __syncthreads();// __syncwarp();
#endif #endif
// rotate phases: first horizontal, then vertical // rotate phases: first horizontal, then vertical
shiftTileHor( shiftTileHor(
clt_tile, // float clt_tile [4][DTT_SIZE][DTT_SIZE1], // +1 to alternate column ports clt_tile, // float clt_tile [4][DTT_SIZE][DTT_SIZE1], // +1 to alternate column ports
...@@ -1115,8 +901,246 @@ __device__ void convertCorrectTile( ...@@ -1115,8 +901,246 @@ __device__ void convertCorrectTile(
#endif #endif
#ifdef DBG_TILE
#ifdef DEBUG1
if ((threadIdx.x) == 0){
printf("\nDTT Tiles after vertical shift, color = %d\n",color);
debug_print_clt1(clt_tile, color, 0xf); // only 1 quadrant for R,B and 2 - for G
printf("\nDTT All done\n");
}
__syncthreads();// __syncwarp();
#endif
#endif
int offset_src = threadIdx.x;
int offset_dst = ((ty * TILESX + tx)*NUM_COLORS + color)* ( 4 * DTT_SIZE * DTT_SIZE) + threadIdx.x; // gpu_kernels + kernel_full_index* (DTT_SIZE * DTT_SIZE * 4);
float * clt_src = clt_tile + offset_src; // threadIdx.x;
float * clt_dst = gpu_clt + offset_dst; // ((ty * TILESX + tx)*NUM_COLORS + color)* ( 4 * DTT_SIZE * DTT_SIZE1) + threadIdx.x; // gpu_kernels + kernel_full_index* (DTT_SIZE * DTT_SIZE * 4);
#ifdef DBG_TILE
#ifdef DEBUG1
if ((threadIdx.x) == 0){
printf("clt_src = 0x%lx\n",clt_src);
printf("clt_dst = 0x%lx\n",clt_dst);
}
#endif
#endif
#pragma unroll
for (int j = 0; j < DTT_SIZE * 4; j++){ // all 4 components, 8 rows
// shared memory tiles use DTT_SIZE1
*clt_dst = *clt_src;
clt_src += DTT_SIZE1;
clt_dst += DTT_SIZE;
}
__syncthreads();// __syncwarp();
// just for testing perform imclt, save result to clt_kernels
} }
extern "C"
__global__ void test_imclt(
float * gpu_clt) // [TILESY][TILESX][NUM_COLORS][DTT_SIZE*DTT_SIZE]
// Initially - no output, will add later
{
// dim3 t = threadIdx;
int tile_in_block = threadIdx.y;
int tile_num = blockIdx.x * IMCLT_TILES_PER_BLOCK + tile_in_block;
if (tile_num >= 1) return; // just testing with a single tile
int thr3 = threadIdx.x >> 3;
int column = threadIdx.x; // modify to use 2*8 threads, if needed.
// int thr012 = threadIdx.x & 7;
// Read clt tile to
__shared__ float clt_tiles [IMCLT_TILES_PER_BLOCK][4][DTT_SIZE][DTT_SIZE1];
__shared__ float mclt_tiles [IMCLT_TILES_PER_BLOCK][DTT_SIZE2][DTT_SIZE21];
// Read clt tile from device memory
for (int color = 0; color < NUM_COLORS; color++) {
float * clt_tile = ((float *) clt_tiles) + tile_in_block * (4 * DTT_SIZE * DTT_SIZE1); // top left quadrant0
float * gpu_tile = ((float *) gpu_clt) + ((DBG_TILE_Y * TILESX + DBG_TILE_X) * NUM_COLORS + color) * (4 * DTT_SIZE * DTT_SIZE); // top left quadrant0
#ifdef DEBUG3
if ((threadIdx.x) == 0){
printf("gpu_tile = 0x%lx\n",gpu_tile);
printf("clt_tile = 0x%lx\n",clt_tile);
}
#endif
clt_tile += column + thr3; // first 2 rows
gpu_tile += column; // first 2 rows
#pragma unroll
for (int i = 0; i < DTT_SIZE2; i++){
*clt_tile= *gpu_tile;
clt_tile += (2 * DTT_SIZE1);
gpu_tile += (2 * DTT_SIZE);
}
// reset mclt tile to zero
float * mclt_tile = ((float*) mclt_tiles) + tile_in_block * (DTT_SIZE2 * DTT_SIZE21) + column;
#pragma unroll
for (int i = 0; i < DTT_SIZE2; i++){
*mclt_tile= 0.0f;
mclt_tile += DTT_SIZE21;
}
__syncthreads();// __syncwarp();
imclt(
((float*) clt_tiles) + tile_in_block * (4 * DTT_SIZE * DTT_SIZE1), // float * clt_tile, // [4][DTT_SIZE][DTT_SIZE1], // +1 to alternate column ports [4][8][9]
((float*) mclt_tiles) + tile_in_block * (DTT_SIZE2 * DTT_SIZE21)); // float * mclt_tile )
__syncthreads();// __syncwarp();
}
}
//
// Uses 16 threads, gets 4*8*8 clt tiles, performs idtt-iv (swapping 1 and 2 quadrants) and then unfolds with window,
// adding to the output 16x16 tile (to use Read-modify-write with 4 passes over the frame. Shuld be zeroed before the
// first pass
//__constant__ int imclt_indx9[16] = {0x28,0x31,0x3a,0x43,0x43,0x3a,0x31,0x28,0x1f,0x16,0x0d,0x04,0x04,0x0d,0x16,0x1f};
__device__ void imclt(
float * clt_tile, // [4][DTT_SIZE][DTT_SIZE1], // +1 to alternate column ports [4][8][9]
float * mclt_tile ) // [2* DTT_SIZE][DTT_SIZE1+ DTT_SIZE], // +1 to alternate column ports[16][17]
{
int thr3 = threadIdx.x >> 3;
int column = threadIdx.x; // modify to use 2*8 threads, if needed.
int thr012 = threadIdx.x & 7;
int column4 = threadIdx.x >> 2;
// int wcolumn =column ^ (7 * thr3); //0..7,7,..0
// int wcolumn = ((thr3 << 3) -1) ^ thr3; //0..7,7,..0
int wcolumn = ((thr3 << 3) - thr3) ^ thr012; //0..7,7,..0
float * clt_tile1 = clt_tile + (DTT_SIZE1 * DTT_SIZE);
float * clt_tile2 = clt_tile1 + (DTT_SIZE1 * DTT_SIZE);
float * clt_tile3 = clt_tile2 + (DTT_SIZE1 * DTT_SIZE);
#ifdef DEBUG3
if ((threadIdx.x) == 0){
printf("\nDTT Tiles before IDTT\n");
debug_print_clt1(clt_tile, -1, 0xf); // only 1 quadrant for R,B and 2 - for G
}
__syncthreads();// __syncwarp();
#endif
// perform horizontal dct-iv on quadrants 0 and 1
dctiv_nodiverg(
// clt_tile + DTT_SIZE1 * (thr012 + DTT_SIZE * thr3), // pointer to start of row for quadrants 0 and 1
clt_tile + DTT_SIZE1 * (thr012 + 2*DTT_SIZE * thr3), // pointer to start of row for quadrants 0 and 2
1);
// perform horizontal dst-iv on quadrants 2 and 3
dstiv_nodiverg( // all colors
// clt_tile2 + DTT_SIZE1 * (thr012 + DTT_SIZE * thr3), // pointer to start of row for quadrants 2 and 3
clt_tile1 + DTT_SIZE1 * (thr012 + 2*DTT_SIZE * thr3), // pointer to start of row for quadrants 1 and 3
1);
__syncthreads();// __syncwarp();
// perform vertical dct-iv on quadrants 0 and 2
dctiv_nodiverg(
// clt_tile + thr012 + (DTT_SIZE1 * 2*DTT_SIZE) * thr3, // pointer to start of row for quadrants 0 and 2
clt_tile + thr012 + (DTT_SIZE1 * DTT_SIZE) * thr3, // pointer to start of row for quadrants 0 and 1
DTT_SIZE1);
// perform vertical dst-iv on quadrants 1 and 3
dstiv_nodiverg(
// clt_tile1 + thr012 + (DTT_SIZE1 * 2*DTT_SIZE) * thr3, // pointer to start of row for quadrants 1 and 3
clt_tile2 + thr012 + (DTT_SIZE1 * DTT_SIZE) * thr3, // pointer to start of row for quadrants 2 and 3
DTT_SIZE1);
__syncthreads();// __syncwarp();
#ifdef DEBUG3
if ((threadIdx.x) == 0){
printf("\nDTT Tiles after IDTT\n");
debug_print_clt1(clt_tile, -1, 0xf); // only 1 quadrant for R,B and 2 - for G
}
__syncthreads();// __syncwarp();
#endif
float hw = HWINDOW2[wcolumn];
int clt_offset = imclt_indx9[column]; // index in each of the 4 iclt quadrants, accounting for stride=9
float * rslt = mclt_tile + column;
#pragma unroll
for (int i = 0; i < 4; i++){
float val = *rslt;
float w = HWINDOW2[i] * hw;
float d0 = idct_signs[0][0][column4] * (*(clt_tile + clt_offset));
float d1 = idct_signs[1][0][column4] * (*(clt_tile1 + clt_offset));
float d2 = idct_signs[2][0][column4] * (*(clt_tile2 + clt_offset));
float d3 = idct_signs[3][0][column4] * (*(clt_tile3 + clt_offset));
d0+=d1;
d2+=d3;
d0+= d2;
if (i < 3){
clt_offset += DTT_SIZE1;
}
// *rslt = __fmaf_rd(w,d0,val); // w*d0 + val
val = __fmaf_rd(w,d0,val); // w*d0 + val
*rslt = val;
rslt += DTT_SIZE21;
}
#pragma unroll
for (int i = 4; i < 8; i++){
float val = *rslt;
float w = HWINDOW2[i] * hw;
float d0 = idct_signs[0][1][column4] * (*(clt_tile + clt_offset));
float d1 = idct_signs[1][1][column4] * (*(clt_tile1 + clt_offset));
float d2 = idct_signs[2][1][column4] * (*(clt_tile2 + clt_offset));
float d3 = idct_signs[3][1][column4] * (*(clt_tile3 + clt_offset));
d0+=d1;
d2+=d3;
d0+= d2;
// if (i < 7){
clt_offset -= DTT_SIZE1;
// }
*rslt = __fmaf_rd(w,d0,val); // w*d0 + val
rslt += DTT_SIZE21;
}
#pragma unroll
for (int i = 7; i >= 4; i--){
float val = *rslt;
float w = HWINDOW2[i] * hw;
float d0 = idct_signs[0][2][column4] * (*(clt_tile + clt_offset));
float d1 = idct_signs[1][2][column4] * (*(clt_tile1 + clt_offset));
float d2 = idct_signs[2][2][column4] * (*(clt_tile2 + clt_offset));
float d3 = idct_signs[3][2][column4] * (*(clt_tile3 + clt_offset));
d0+=d1;
d2+=d3;
d0+= d2;
if (i > 4){
clt_offset -= DTT_SIZE1;
}
*rslt = __fmaf_rd(w,d0,val); // w*d0 + val
rslt += DTT_SIZE21;
}
#pragma unroll
for (int i = 3; i >= 0; i--){
float val = *rslt;
float w = HWINDOW2[i] * hw;
float d0 = idct_signs[0][3][column4] * (*(clt_tile + clt_offset));
float d1 = idct_signs[1][3][column4] * (*(clt_tile1 + clt_offset));
float d2 = idct_signs[2][3][column4] * (*(clt_tile2 + clt_offset));
float d3 = idct_signs[3][3][column4] * (*(clt_tile3 + clt_offset));
d0+=d1;
d2+=d3;
d0+= d2;
if (i > 0){
clt_offset += DTT_SIZE1;
}
*rslt = __fmaf_rd(w,d0,val); // w*d0 + val
rslt += DTT_SIZE21;
}
#ifdef DEBUG3
__syncthreads();// __syncwarp();
if ((threadIdx.x) == 0){
printf("\nDTT Tiles after IDTT\n");
debug_print_mclt(mclt_tile, -1); // only 1 quadrant for R,B and 2 - for G
}
__syncthreads();// __syncwarp();
#endif
}
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