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/*
* Copyright 2011-2016 Blender Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef __UTIL_TEXTURE_H__
#define __UTIL_TEXTURE_H__
CCL_NAMESPACE_BEGIN
/* Texture limits on devices. */
/* CUDA (Geforce 4xx and 5xx) */
#define TEX_NUM_FLOAT4_CUDA 5
#define TEX_NUM_BYTE4_CUDA 84
#define TEX_NUM_HALF4_CUDA 0
#define TEX_NUM_FLOAT_CUDA 0
#define TEX_NUM_BYTE_CUDA 0
#define TEX_NUM_HALF_CUDA 0
#define TEX_START_FLOAT4_CUDA 0
#define TEX_START_BYTE4_CUDA TEX_NUM_FLOAT4_CUDA
#define TEX_START_HALF4_CUDA (TEX_NUM_FLOAT4_CUDA + TEX_NUM_BYTE4_CUDA)
#define TEX_START_FLOAT_CUDA (TEX_NUM_FLOAT4_CUDA + TEX_NUM_BYTE4_CUDA + TEX_NUM_HALF4_CUDA)
#define TEX_START_BYTE_CUDA (TEX_NUM_FLOAT4_CUDA + TEX_NUM_BYTE4_CUDA + TEX_NUM_HALF4_CUDA + TEX_NUM_FLOAT_CUDA)
#define TEX_START_HALF_CUDA (TEX_NUM_FLOAT4_CUDA + TEX_NUM_BYTE4_CUDA + TEX_NUM_HALF4_CUDA + TEX_NUM_FLOAT_CUDA + TEX_NUM_BYTE_CUDA)
/* Any architecture other than old CUDA cards */
#define TEX_NUM_MAX (INT_MAX >> 4)
/* Color to use when textures are not found. */
#define TEX_IMAGE_MISSING_R 1
#define TEX_IMAGE_MISSING_G 0
#define TEX_IMAGE_MISSING_B 1
#define TEX_IMAGE_MISSING_A 1
#if defined (__KERNEL_CUDA__) && (__CUDA_ARCH__ < 300)
# define kernel_tex_type(tex) (tex < TEX_START_BYTE4_CUDA ? IMAGE_DATA_TYPE_FLOAT4 : IMAGE_DATA_TYPE_BYTE4)
#else
# define kernel_tex_type(tex) (tex & IMAGE_DATA_TYPE_MASK)
#endif
/* Interpolation types for textures
* cuda also use texture space to store other objects */
typedef enum InterpolationType {
INTERPOLATION_NONE = -1,
INTERPOLATION_LINEAR = 0,
INTERPOLATION_CLOSEST = 1,
INTERPOLATION_CUBIC = 2,
INTERPOLATION_SMART = 3,
INTERPOLATION_NUM_TYPES,
} InterpolationType;
/* Texture types
* Since we store the type in the lower bits of a flat index,
* the shift and bit mask constant below need to be kept in sync. */
typedef enum ImageDataType {
IMAGE_DATA_TYPE_FLOAT4 = 0,
IMAGE_DATA_TYPE_BYTE4 = 1,
IMAGE_DATA_TYPE_HALF4 = 2,
IMAGE_DATA_TYPE_FLOAT = 3,
IMAGE_DATA_TYPE_BYTE = 4,
IMAGE_DATA_TYPE_HALF = 5,
IMAGE_DATA_NUM_TYPES
} ImageDataType;
#define IMAGE_DATA_TYPE_SHIFT 3
#define IMAGE_DATA_TYPE_MASK 0x7
/* Extension types for textures.
*
* Defines how the image is extrapolated past its original bounds. */
typedef enum ExtensionType {
/* Cause the image to repeat horizontally and vertically. */
EXTENSION_REPEAT = 0,
/* Extend by repeating edge pixels of the image. */
EXTENSION_EXTEND = 1,
/* Clip to image size and set exterior pixels as transparent. */
EXTENSION_CLIP = 2,
EXTENSION_NUM_TYPES,
} ExtensionType;
typedef struct TextureInfo {
/* Pointer, offset or texture depending on device. */
uint64_t data;
/* Buffer number for OpenCL. */
uint cl_buffer;
/* Interpolation and extension type. */
uint interpolation, extension;
/* Dimensions. */
uint width, height, depth;
} TextureInfo;
CCL_NAMESPACE_END
#endif /* __UTIL_TEXTURE_H__ */
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