1 /* 2 * Copyright 2011-2016 Blender Foundation 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef __UTIL_TEXTURE_H__ 18 #define __UTIL_TEXTURE_H__ 19 20 #include "util_transform.h" 21 22 CCL_NAMESPACE_BEGIN 23 24 /* Texture limits on devices. */ 25 #define TEX_NUM_MAX (INT_MAX >> 4) 26 27 /* Color to use when textures are not found. */ 28 #define TEX_IMAGE_MISSING_R 1 29 #define TEX_IMAGE_MISSING_G 0 30 #define TEX_IMAGE_MISSING_B 1 31 #define TEX_IMAGE_MISSING_A 1 32 33 /* Texture type. */ 34 #define kernel_tex_type(tex) (tex & IMAGE_DATA_TYPE_MASK) 35 36 /* Interpolation types for textures 37 * cuda also use texture space to store other objects */ 38 typedef enum InterpolationType { 39 INTERPOLATION_NONE = -1, 40 INTERPOLATION_LINEAR = 0, 41 INTERPOLATION_CLOSEST = 1, 42 INTERPOLATION_CUBIC = 2, 43 INTERPOLATION_SMART = 3, 44 45 INTERPOLATION_NUM_TYPES, 46 } InterpolationType; 47 48 /* Texture types 49 * Since we store the type in the lower bits of a flat index, 50 * the shift and bit mask constant below need to be kept in sync. */ 51 typedef enum ImageDataType { 52 IMAGE_DATA_TYPE_FLOAT4 = 0, 53 IMAGE_DATA_TYPE_BYTE4 = 1, 54 IMAGE_DATA_TYPE_HALF4 = 2, 55 IMAGE_DATA_TYPE_FLOAT = 3, 56 IMAGE_DATA_TYPE_BYTE = 4, 57 IMAGE_DATA_TYPE_HALF = 5, 58 IMAGE_DATA_TYPE_USHORT4 = 6, 59 IMAGE_DATA_TYPE_USHORT = 7, 60 IMAGE_DATA_TYPE_NANOVDB_FLOAT = 8, 61 IMAGE_DATA_TYPE_NANOVDB_FLOAT3 = 9, 62 63 IMAGE_DATA_NUM_TYPES 64 } ImageDataType; 65 66 /* Alpha types 67 * How to treat alpha in images. */ 68 typedef enum ImageAlphaType { 69 IMAGE_ALPHA_UNASSOCIATED = 0, 70 IMAGE_ALPHA_ASSOCIATED = 1, 71 IMAGE_ALPHA_CHANNEL_PACKED = 2, 72 IMAGE_ALPHA_IGNORE = 3, 73 IMAGE_ALPHA_AUTO = 4, 74 75 IMAGE_ALPHA_NUM_TYPES, 76 } ImageAlphaType; 77 78 #define IMAGE_DATA_TYPE_SHIFT 4 79 #define IMAGE_DATA_TYPE_MASK 0xF 80 81 /* Extension types for textures. 82 * 83 * Defines how the image is extrapolated past its original bounds. */ 84 typedef enum ExtensionType { 85 /* Cause the image to repeat horizontally and vertically. */ 86 EXTENSION_REPEAT = 0, 87 /* Extend by repeating edge pixels of the image. */ 88 EXTENSION_EXTEND = 1, 89 /* Clip to image size and set exterior pixels as transparent. */ 90 EXTENSION_CLIP = 2, 91 92 EXTENSION_NUM_TYPES, 93 } ExtensionType; 94 95 typedef struct TextureInfo { 96 /* Pointer, offset or texture depending on device. */ 97 uint64_t data; 98 /* Data Type */ 99 uint data_type; 100 /* Buffer number for OpenCL. */ 101 uint cl_buffer; 102 /* Interpolation and extension type. */ 103 uint interpolation, extension; 104 /* Dimensions. */ 105 uint width, height, depth; 106 /* Transform for 3D textures. */ 107 uint use_transform_3d; 108 Transform transform_3d; 109 } TextureInfo; 110 111 CCL_NAMESPACE_END 112 113 #endif /* __UTIL_TEXTURE_H__ */ 114