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Fix the ocl::cvtColor mismatch on some devices

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This commit is contained in:
yao 2013-02-25 15:19:39 +08:00
parent 620c699456
commit 59ebf4ed9f
1 changed files with 3 additions and 3 deletions
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6
modules/ocl/src/kernels/cvt_color.cl
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@ -203,8 +203,8 @@ __kernel void YUV2RGB(int cols,int rows,int src_step,int dst_step,int channels,
__constant int ITUR_BT_601_CY = 1220542;
__constant int ITUR_BT_601_CUB = 2116026;
__constant int ITUR_BT_601_CUG = -409993;
__constant int ITUR_BT_601_CVG = -852492;
__constant int ITUR_BT_601_CUG = 409993;
__constant int ITUR_BT_601_CVG = 852492;
__constant int ITUR_BT_601_CVR = 1673527;
__constant int ITUR_BT_601_SHIFT = 20;
@ -229,7 +229,7 @@ __kernel void YUV2RGBA_NV12(int cols,int rows,int src_step,int dst_step,
int V = usrc[1] - 128;
int ruv = (1 << (ITUR_BT_601_SHIFT - 1)) + ITUR_BT_601_CVR * V;
int guv = (1 << (ITUR_BT_601_SHIFT - 1)) + ITUR_BT_601_CVG * V + ITUR_BT_601_CUG * U;
int guv = (1 << (ITUR_BT_601_SHIFT - 1)) - ITUR_BT_601_CVG * V - ITUR_BT_601_CUG * U;
int buv = (1 << (ITUR_BT_601_SHIFT - 1)) + ITUR_BT_601_CUB * U;
Y1 = max(0, Y1 - 16) * ITUR_BT_601_CY;