José Fonseca | de8376e | 2009-09-07 14:43:51 +0100 | [diff] [blame] | 1 | /************************************************************************** |
| 2 | * |
| 3 | * Copyright 2009 VMware, Inc. |
| 4 | * All Rights Reserved. |
| 5 | * |
| 6 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 7 | * copy of this software and associated documentation files (the |
| 8 | * "Software"), to deal in the Software without restriction, including |
| 9 | * without limitation the rights to use, copy, modify, merge, publish, |
| 10 | * distribute, sub license, and/or sell copies of the Software, and to |
| 11 | * permit persons to whom the Software is furnished to do so, subject to |
| 12 | * the following conditions: |
| 13 | * |
| 14 | * The above copyright notice and this permission notice (including the |
| 15 | * next paragraph) shall be included in all copies or substantial portions |
| 16 | * of the Software. |
| 17 | * |
| 18 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
| 19 | * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| 20 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. |
| 21 | * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR |
| 22 | * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, |
| 23 | * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE |
| 24 | * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| 25 | * |
| 26 | **************************************************************************/ |
| 27 | |
| 28 | /** |
| 29 | * @file |
| 30 | * Texture sampling. |
| 31 | * |
| 32 | * @author Jose Fonseca <jfonseca@vmware.com> |
| 33 | */ |
| 34 | |
| 35 | #ifndef LP_BLD_SAMPLE_H |
| 36 | #define LP_BLD_SAMPLE_H |
| 37 | |
| 38 | |
| 39 | #include <llvm-c/Core.h> |
| 40 | |
| 41 | struct pipe_texture; |
| 42 | struct pipe_sampler_state; |
José Fonseca | bc93e91 | 2009-10-22 22:37:06 +0100 | [diff] [blame] | 43 | struct util_format_description; |
José Fonseca | b4835ea | 2009-09-14 11:05:06 +0100 | [diff] [blame] | 44 | struct lp_type; |
José Fonseca | bc93e91 | 2009-10-22 22:37:06 +0100 | [diff] [blame] | 45 | struct lp_build_context; |
José Fonseca | de8376e | 2009-09-07 14:43:51 +0100 | [diff] [blame] | 46 | |
| 47 | |
| 48 | /** |
| 49 | * Sampler static state. |
| 50 | * |
| 51 | * These are the bits of state from pipe_texture and pipe_sampler_state that |
| 52 | * are embedded in the generated code. |
| 53 | */ |
| 54 | struct lp_sampler_static_state |
| 55 | { |
| 56 | /* pipe_texture's state */ |
| 57 | enum pipe_format format; |
José Fonseca | 4139bc8 | 2009-09-09 21:46:18 +0100 | [diff] [blame] | 58 | unsigned target:2; |
José Fonseca | de8376e | 2009-09-07 14:43:51 +0100 | [diff] [blame] | 59 | unsigned pot_width:1; |
| 60 | unsigned pot_height:1; |
| 61 | unsigned pot_depth:1; |
| 62 | |
| 63 | /* pipe_sampler_state's state */ |
| 64 | unsigned wrap_s:3; |
| 65 | unsigned wrap_t:3; |
| 66 | unsigned wrap_r:3; |
| 67 | unsigned min_img_filter:2; |
| 68 | unsigned min_mip_filter:2; |
| 69 | unsigned mag_img_filter:2; |
| 70 | unsigned compare_mode:1; |
| 71 | unsigned compare_func:3; |
| 72 | unsigned normalized_coords:1; |
| 73 | unsigned prefilter:4; |
| 74 | }; |
| 75 | |
| 76 | |
| 77 | /** |
| 78 | * Sampler dynamic state. |
| 79 | * |
| 80 | * These are the bits of state from pipe_texture and pipe_sampler_state that |
| 81 | * are computed in runtime. |
| 82 | * |
| 83 | * There are obtained through callbacks, as we don't want to tie the texture |
| 84 | * sampling code generation logic to any particular texture layout or pipe |
| 85 | * driver. |
| 86 | */ |
| 87 | struct lp_sampler_dynamic_state |
| 88 | { |
| 89 | |
| 90 | /** Obtain the base texture width. */ |
| 91 | LLVMValueRef |
| 92 | (*width)( struct lp_sampler_dynamic_state *state, |
| 93 | LLVMBuilderRef builder, |
| 94 | unsigned unit); |
| 95 | |
| 96 | /** Obtain the base texture height. */ |
| 97 | LLVMValueRef |
| 98 | (*height)( struct lp_sampler_dynamic_state *state, |
| 99 | LLVMBuilderRef builder, |
| 100 | unsigned unit); |
| 101 | |
| 102 | LLVMValueRef |
| 103 | (*stride)( struct lp_sampler_dynamic_state *state, |
| 104 | LLVMBuilderRef builder, |
| 105 | unsigned unit); |
| 106 | |
| 107 | LLVMValueRef |
| 108 | (*data_ptr)( struct lp_sampler_dynamic_state *state, |
| 109 | LLVMBuilderRef builder, |
| 110 | unsigned unit); |
| 111 | |
| 112 | }; |
| 113 | |
| 114 | |
| 115 | /** |
| 116 | * Derive the sampler static state. |
| 117 | */ |
| 118 | void |
| 119 | lp_sampler_static_state(struct lp_sampler_static_state *state, |
| 120 | const struct pipe_texture *texture, |
| 121 | const struct pipe_sampler_state *sampler); |
| 122 | |
| 123 | |
José Fonseca | b4f6907 | 2009-10-22 20:42:16 +0100 | [diff] [blame] | 124 | LLVMValueRef |
| 125 | lp_build_gather(LLVMBuilderRef builder, |
| 126 | unsigned length, |
| 127 | unsigned src_width, |
| 128 | unsigned dst_width, |
| 129 | LLVMValueRef base_ptr, |
| 130 | LLVMValueRef offsets); |
| 131 | |
| 132 | |
José Fonseca | bc93e91 | 2009-10-22 22:37:06 +0100 | [diff] [blame] | 133 | LLVMValueRef |
| 134 | lp_build_sample_offset(struct lp_build_context *bld, |
| 135 | const struct util_format_description *format_desc, |
| 136 | LLVMValueRef x, |
| 137 | LLVMValueRef y, |
| 138 | LLVMValueRef y_stride, |
| 139 | LLVMValueRef data_ptr); |
| 140 | |
| 141 | |
José Fonseca | de8376e | 2009-09-07 14:43:51 +0100 | [diff] [blame] | 142 | void |
| 143 | lp_build_sample_soa(LLVMBuilderRef builder, |
| 144 | const struct lp_sampler_static_state *static_state, |
| 145 | struct lp_sampler_dynamic_state *dynamic_state, |
José Fonseca | b4835ea | 2009-09-14 11:05:06 +0100 | [diff] [blame] | 146 | struct lp_type fp_type, |
José Fonseca | de8376e | 2009-09-07 14:43:51 +0100 | [diff] [blame] | 147 | unsigned unit, |
| 148 | unsigned num_coords, |
| 149 | const LLVMValueRef *coords, |
| 150 | LLVMValueRef lodbias, |
| 151 | LLVMValueRef *texel); |
| 152 | |
| 153 | |
| 154 | |
| 155 | #endif /* LP_BLD_SAMPLE_H */ |