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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. */
#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
/* Texture type. */
#define kernel_tex_type(tex) (tex & IMAGE_DATA_TYPE_MASK)
/* 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_TYPE_USHORT4 = 6,
IMAGE_DATA_TYPE_USHORT = 7,
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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