1 /**************************************************************************
3 * Copyright 2009 VMware, Inc.
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:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
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
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23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 **************************************************************************/
32 * @author Jose Fonseca <jfonseca@vmware.com>
35 #ifndef LP_BLD_SAMPLE_H
36 #define LP_BLD_SAMPLE_H
39 #include <llvm-c/Core.h>
42 struct pipe_sampler_state
;
43 struct util_format_description
;
45 struct lp_build_context
;
49 * Sampler static state.
51 * These are the bits of state from pipe_texture and pipe_sampler_state that
52 * are embedded in the generated code.
54 struct lp_sampler_static_state
56 /* pipe_texture's state */
57 enum pipe_format format
;
60 unsigned pot_height
:1;
63 /* pipe_sampler_state's state */
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;
77 * Sampler dynamic state.
79 * These are the bits of state from pipe_texture and pipe_sampler_state that
80 * are computed in runtime.
82 * There are obtained through callbacks, as we don't want to tie the texture
83 * sampling code generation logic to any particular texture layout or pipe
86 struct lp_sampler_dynamic_state
89 /** Obtain the base texture width. */
91 (*width
)( struct lp_sampler_dynamic_state
*state
,
92 LLVMBuilderRef builder
,
95 /** Obtain the base texture height. */
97 (*height
)( struct lp_sampler_dynamic_state
*state
,
98 LLVMBuilderRef builder
,
102 (*stride
)( struct lp_sampler_dynamic_state
*state
,
103 LLVMBuilderRef builder
,
107 (*data_ptr
)( struct lp_sampler_dynamic_state
*state
,
108 LLVMBuilderRef builder
,
115 * Derive the sampler static state.
118 lp_sampler_static_state(struct lp_sampler_static_state
*state
,
119 const struct pipe_texture
*texture
,
120 const struct pipe_sampler_state
*sampler
);
124 lp_build_gather(LLVMBuilderRef builder
,
128 LLVMValueRef base_ptr
,
129 LLVMValueRef offsets
);
133 lp_build_sample_offset(struct lp_build_context
*bld
,
134 const struct util_format_description
*format_desc
,
137 LLVMValueRef y_stride
,
138 LLVMValueRef data_ptr
);
142 lp_build_sample_soa(LLVMBuilderRef builder
,
143 const struct lp_sampler_static_state
*static_state
,
144 struct lp_sampler_dynamic_state
*dynamic_state
,
145 struct lp_type fp_type
,
148 const LLVMValueRef
*coords
,
149 LLVMValueRef lodbias
,
150 LLVMValueRef
*texel
);
154 #endif /* LP_BLD_SAMPLE_H */