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3 * Copyright 2009 VMware, Inc.
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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
;
47 * Sampler static state.
49 * These are the bits of state from pipe_texture and pipe_sampler_state that
50 * are embedded in the generated code.
52 struct lp_sampler_static_state
54 /* pipe_texture's state */
55 enum pipe_format format
;
58 unsigned pot_height
:1;
61 /* pipe_sampler_state's state */
65 unsigned min_img_filter
:2;
66 unsigned min_mip_filter
:2;
67 unsigned mag_img_filter
:2;
68 unsigned compare_mode
:1;
69 unsigned compare_func
:3;
70 unsigned normalized_coords
:1;
76 * Sampler dynamic state.
78 * These are the bits of state from pipe_texture and pipe_sampler_state that
79 * are computed in runtime.
81 * There are obtained through callbacks, as we don't want to tie the texture
82 * sampling code generation logic to any particular texture layout or pipe
85 struct lp_sampler_dynamic_state
88 /** Obtain the base texture width. */
90 (*width
)( struct lp_sampler_dynamic_state
*state
,
91 LLVMBuilderRef builder
,
94 /** Obtain the base texture height. */
96 (*height
)( struct lp_sampler_dynamic_state
*state
,
97 LLVMBuilderRef builder
,
101 (*stride
)( struct lp_sampler_dynamic_state
*state
,
102 LLVMBuilderRef builder
,
106 (*data_ptr
)( struct lp_sampler_dynamic_state
*state
,
107 LLVMBuilderRef builder
,
114 * Derive the sampler static state.
117 lp_sampler_static_state(struct lp_sampler_static_state
*state
,
118 const struct pipe_texture
*texture
,
119 const struct pipe_sampler_state
*sampler
);
123 lp_build_sample_soa(LLVMBuilderRef builder
,
124 const struct lp_sampler_static_state
*static_state
,
125 struct lp_sampler_dynamic_state
*dynamic_state
,
126 struct lp_type fp_type
,
129 const LLVMValueRef
*coords
,
130 LLVMValueRef lodbias
,
131 LLVMValueRef
*texel
);
135 #endif /* LP_BLD_SAMPLE_H */