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/*
* Copyright (c) 2011, Denis Steckelmacher <steckdenis@yahoo.fr>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of the copyright holder nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/**
* \file sampler.h
* \brief Sampler object
*/
#ifndef __SAMPLER_H__
#define __SAMPLER_H__
#include <CL/cl.h>
#include "object.h"
// WARNING: Keep in sync with stdlib.h
#define CLK_NORMALIZED_COORDS_FALSE 0x00000000
#define CLK_NORMALIZED_COORDS_TRUE 0x00000001
#define CLK_ADDRESS_NONE 0x00000000
#define CLK_ADDRESS_MIRRORED_REPEAT 0x00000010
#define CLK_ADDRESS_REPEAT 0x00000020
#define CLK_ADDRESS_CLAMP_TO_EDGE 0x00000030
#define CLK_ADDRESS_CLAMP 0x00000040
#define CLK_FILTER_NEAREST 0x00000000
#define CLK_FILTER_LINEAR 0x00000100
#define CLK_NORMALIZED_COORDS_MASK 0x0000000f
#define CLK_ADDRESS_MODE_MASK 0x000000f0
#define CLK_FILTER_MASK 0x00000f00
namespace Coal
{
class Context;
/**
* \brief Sampler
*
* This object doesn't do anything intersting, it only converts a set of
* host OpenCL constants to constants that will be used by the kernels and
* the image reading and writing built-in functions.
*/
class Sampler : public Object
{
public:
/**
* \brief Constructor
* \param ctx parent \c Coal::Context
* \param normalized_coords true if the coords given to the built-in
* image functions are normalized, false otherwise
* \param addressing_mode addressing mode used to read images
* \param filter_mode filter mode used to read images
* \param errcode_ret return code (\c CL_SUCCESS if all is good)
*/
Sampler(Context *ctx,
cl_bool normalized_coords,
cl_addressing_mode addressing_mode,
cl_filter_mode filter_mode,
cl_int *errcode_ret);
/**
* \brief Simpler constructor
* \param ctx parent \c Coal::Context
* \param bitfield bitfield already calculated
*/
Sampler(Context *ctx,
unsigned int bitfield);
unsigned int bitfield() const; /*!< \brief Bitfield value usable by the kernels */
/**
* \brief Get information about the sampler
* \copydetails Coal::DeviceInterface::info
*/
cl_int info(cl_sampler_info param_name,
size_t param_value_size,
void *param_value,
size_t *param_value_size_ret) const;
private:
unsigned int p_bitfield;
cl_int checkImageAvailability() const;
};
}
struct _cl_sampler : public Coal::Sampler
{};
#endif
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