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/*
* Copyright © 2012 Intel Corporation
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
* Author: Benjamin Segovia <benjamin.segovia@intel.com>
*/
#include "cl_image.h"
#include "cl_utils.h"
#include "intel/intel_defines.h"
#include <assert.h>
LOCAL cl_int
cl_image_byte_per_pixel(const cl_image_format *fmt, uint32_t *bpp)
{
assert(bpp);
if(fmt == NULL)
return CL_INVALID_IMAGE_FORMAT_DESCRIPTOR;
const uint32_t type = fmt->image_channel_data_type;
const uint32_t order = fmt->image_channel_order;
switch (type) {
#define DECL_BPP(DATA_TYPE, VALUE) case DATA_TYPE: *bpp = VALUE;
DECL_BPP(CL_SNORM_INT8, 1); break;
DECL_BPP(CL_SNORM_INT16, 2); break;
DECL_BPP(CL_UNORM_INT8, 1); break;
DECL_BPP(CL_UNORM_INT16, 2); break;
DECL_BPP(CL_UNORM_SHORT_565, 2);
if (order != CL_RGBx && order != CL_RGB)
return CL_INVALID_IMAGE_FORMAT_DESCRIPTOR;
break;
DECL_BPP(CL_UNORM_SHORT_555, 2);
if (order != CL_RGBx && order != CL_RGB)
return CL_INVALID_IMAGE_FORMAT_DESCRIPTOR;
break;
DECL_BPP(CL_UNORM_INT_101010, 4);
if (order != CL_RGBx && order != CL_RGB)
return CL_INVALID_IMAGE_FORMAT_DESCRIPTOR;
break;
DECL_BPP(CL_SIGNED_INT8, 1); break;
DECL_BPP(CL_SIGNED_INT16, 2); break;
DECL_BPP(CL_SIGNED_INT32, 4); break;
DECL_BPP(CL_UNSIGNED_INT8, 1); break;
DECL_BPP(CL_UNSIGNED_INT16, 2); break;
DECL_BPP(CL_UNSIGNED_INT32, 4); break;
DECL_BPP(CL_HALF_FLOAT, 2); break;
DECL_BPP(CL_FLOAT, 4); break;
#undef DECL_BPP
default: return CL_INVALID_IMAGE_FORMAT_DESCRIPTOR;
};
switch (order) {
case CL_Rx: break;
case CL_R: break;
case CL_A: break;
case CL_RA: *bpp *= 2; break;
case CL_RG: *bpp *= 2; break;
case CL_INTENSITY:
case CL_LUMINANCE:
if (type != CL_UNORM_INT8 && type != CL_UNORM_INT16 &&
type != CL_SNORM_INT8 && type != CL_SNORM_INT16 &&
type != CL_HALF_FLOAT && type != CL_FLOAT)
return CL_INVALID_IMAGE_FORMAT_DESCRIPTOR;
break;
case CL_RGB:
case CL_RGBx:
if (type != CL_UNORM_SHORT_555 &&
type != CL_UNORM_SHORT_565 &&
type != CL_UNORM_INT_101010)
return CL_INVALID_IMAGE_FORMAT_DESCRIPTOR;
break;
case CL_RGBA: *bpp *= 4; break;
case CL_ARGB:
case CL_BGRA:
if (type != CL_UNORM_INT8 && type != CL_SIGNED_INT8 &&
type != CL_SNORM_INT8 && type != CL_UNSIGNED_INT8)
return CL_INVALID_IMAGE_FORMAT_DESCRIPTOR;
*bpp *= 4;
break;
default: return CL_INVALID_IMAGE_FORMAT_DESCRIPTOR;
};
return CL_SUCCESS;
}
LOCAL uint32_t
cl_image_get_intel_format(const cl_image_format *fmt)
{
const uint32_t type = fmt->image_channel_data_type;
const uint32_t order = fmt->image_channel_order;
switch (order) {
case CL_R:
#if 0
case CL_Rx:
case CL_A:
case CL_INTENSITY:
case CL_LUMINANCE:
if ((order == CL_INTENSITY || order == CL_LUMINANCE)
&& (type != CL_UNORM_INT8 && type != CL_UNORM_INT16
&& type != CL_SNORM_INT8 && type != CL_SNORM_INT16
&& type != CL_HALF_FLOAT && type != CL_FLOAT))
return INTEL_UNSUPPORTED_FORMAT;
#endif
/* XXX it seems we have some acuracy compatible issue with snomr_int8/16,
* have to disable those formats currently. */
switch (type) {
case CL_HALF_FLOAT: return I965_SURFACEFORMAT_R16_FLOAT;
case CL_FLOAT: return I965_SURFACEFORMAT_R32_FLOAT;
// case CL_SNORM_INT16: return I965_SURFACEFORMAT_R16_SNORM;
// case CL_SNORM_INT8: return I965_SURFACEFORMAT_R8_SNORM;
case CL_UNORM_INT8: return I965_SURFACEFORMAT_R8_UNORM;
case CL_UNORM_INT16: return I965_SURFACEFORMAT_R16_UNORM;
case CL_SIGNED_INT8: return I965_SURFACEFORMAT_R8_SINT;
case CL_SIGNED_INT16: return I965_SURFACEFORMAT_R16_SINT;
case CL_SIGNED_INT32: return I965_SURFACEFORMAT_R32_SINT;
case CL_UNSIGNED_INT8: return I965_SURFACEFORMAT_R8_UINT;
case CL_UNSIGNED_INT16: return I965_SURFACEFORMAT_R16_UINT;
case CL_UNSIGNED_INT32: return I965_SURFACEFORMAT_R32_UINT;
default: return INTEL_UNSUPPORTED_FORMAT;
};
#if 0
case CL_RG:
case CL_RA:
switch (type) {
case CL_HALF_FLOAT: return I965_SURFACEFORMAT_R16G16_FLOAT;
case CL_FLOAT: return I965_SURFACEFORMAT_R32G32_FLOAT;
case CL_SNORM_INT16: return I965_SURFACEFORMAT_R16G16_SNORM;
case CL_SNORM_INT8: return I965_SURFACEFORMAT_R8G8_SNORM;
case CL_UNORM_INT8: return I965_SURFACEFORMAT_R8G8_UNORM;
case CL_UNORM_INT16: return I965_SURFACEFORMAT_R16G16_UNORM;
case CL_SIGNED_INT8: return I965_SURFACEFORMAT_R8G8_SINT;
case CL_SIGNED_INT16: return I965_SURFACEFORMAT_R16G16_SINT;
case CL_SIGNED_INT32: return I965_SURFACEFORMAT_R32G32_SINT;
case CL_UNSIGNED_INT8: return I965_SURFACEFORMAT_R8G8_UINT;
case CL_UNSIGNED_INT16: return I965_SURFACEFORMAT_R16G16_UINT;
case CL_UNSIGNED_INT32: return I965_SURFACEFORMAT_R32G32_UINT;
default: return INTEL_UNSUPPORTED_FORMAT;
};
case CL_RGB:
case CL_RGBx:
switch (type) {
case CL_UNORM_INT_101010: return I965_SURFACEFORMAT_R10G10B10A2_UNORM;
case CL_UNORM_SHORT_565:
case CL_UNORM_SHORT_555:
default: return INTEL_UNSUPPORTED_FORMAT;
};
#endif
case CL_RGBA:
switch (type) {
case CL_HALF_FLOAT: return I965_SURFACEFORMAT_R16G16B16A16_FLOAT;
case CL_FLOAT: return I965_SURFACEFORMAT_R32G32B32A32_FLOAT;
// case CL_SNORM_INT16: return I965_SURFACEFORMAT_R16G16B16A16_SNORM;
// case CL_SNORM_INT8: return I965_SURFACEFORMAT_R8G8B8A8_SNORM;
case CL_UNORM_INT8: return I965_SURFACEFORMAT_R8G8B8A8_UNORM;
case CL_UNORM_INT16: return I965_SURFACEFORMAT_R16G16B16A16_UNORM;
case CL_SIGNED_INT8: return I965_SURFACEFORMAT_R8G8B8A8_SINT;
case CL_SIGNED_INT16: return I965_SURFACEFORMAT_R16G16B16A16_SINT;
case CL_SIGNED_INT32: return I965_SURFACEFORMAT_R32G32B32A32_SINT;
case CL_UNSIGNED_INT8: return I965_SURFACEFORMAT_R8G8B8A8_UINT;
case CL_UNSIGNED_INT16: return I965_SURFACEFORMAT_R16G16B16A16_UINT;
case CL_UNSIGNED_INT32: return I965_SURFACEFORMAT_R32G32B32A32_UINT;
default: return INTEL_UNSUPPORTED_FORMAT;
};
case CL_ARGB: return INTEL_UNSUPPORTED_FORMAT;
case CL_BGRA:
switch (type) {
case CL_UNORM_INT8: return I965_SURFACEFORMAT_B8G8R8A8_UNORM;
default: return INTEL_UNSUPPORTED_FORMAT;
};
default: return INTEL_UNSUPPORTED_FORMAT;
};
}
static const uint32_t cl_image_order[] = {
CL_R, CL_A, CL_RG, CL_RA, CL_RGB, CL_RGBA, CL_BGRA, CL_ARGB,
CL_INTENSITY, CL_LUMINANCE, CL_Rx, CL_RGx, CL_RGBx
};
static const uint32_t cl_image_type[] = {
CL_SNORM_INT8, CL_SNORM_INT16, CL_UNORM_INT8, CL_UNORM_INT16,
CL_UNORM_SHORT_565, CL_UNORM_SHORT_555, CL_UNORM_INT_101010,
CL_SIGNED_INT8, CL_SIGNED_INT16, CL_SIGNED_INT32,
CL_UNSIGNED_INT8, CL_UNSIGNED_INT16, CL_UNSIGNED_INT32,
CL_HALF_FLOAT, CL_FLOAT
};
static const size_t cl_image_order_n = SIZEOF32(cl_image_order);
static const size_t cl_image_type_n = SIZEOF32(cl_image_type);
cl_int
cl_image_get_supported_fmt(cl_context ctx,
cl_mem_object_type image_type,
cl_uint num_entries,
cl_image_format *image_formats,
cl_uint *num_image_formats)
{
size_t i, j, n = 0;
for (i = 0; i < cl_image_order_n; ++i)
for (j = 0; j < cl_image_type_n; ++j) {
const cl_image_format fmt = {
.image_channel_order = cl_image_order[i],
.image_channel_data_type = cl_image_type[j]
};
const uint32_t intel_fmt = cl_image_get_intel_format(&fmt);
if (intel_fmt == INTEL_UNSUPPORTED_FORMAT)
continue;
if (n < num_entries && image_formats) image_formats[n] = fmt;
n++;
}
if (num_image_formats) *num_image_formats = n;
return CL_SUCCESS;
}
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