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
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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 **************************************************************************/
30 * TGSI to LLVM IR translation.
32 * @author Jose Fonseca <jfonseca@vmware.com>
38 #include "gallivm/lp_bld.h"
42 struct tgsi_shader_info
;
44 struct lp_build_context
;
45 struct lp_build_mask_context
;
48 enum lp_build_tex_modifier
{
49 LP_BLD_TEX_MODIFIER_NONE
= 0,
50 LP_BLD_TEX_MODIFIER_PROJECTED
,
51 LP_BLD_TEX_MODIFIER_LOD_BIAS
,
52 LP_BLD_TEX_MODIFIER_EXPLICIT_LOD
,
53 LP_BLD_TEX_MODIFIER_EXPLICIT_DERIV
58 * Sampler code generation interface.
60 * Although texture sampling is a requirement for TGSI translation, it is
61 * a very different problem with several different approaches to it. This
62 * structure establishes an interface for texture sampling code generation, so
63 * that we can easily use different texture sampling strategies.
65 struct lp_build_sampler_soa
68 (*destroy
)( struct lp_build_sampler_soa
*sampler
);
71 (*emit_fetch_texel
)( const struct lp_build_sampler_soa
*sampler
,
72 LLVMBuilderRef builder
,
76 const LLVMValueRef
*coords
,
77 const LLVMValueRef
*ddx
,
78 const LLVMValueRef
*ddy
,
79 LLVMValueRef lod_bias
, /* optional */
80 LLVMValueRef explicit_lod
, /* optional */
85 struct lp_build_sampler_aos
88 (*destroy
)( struct lp_build_sampler_aos
*sampler
);
91 (*emit_fetch_texel
)( const struct lp_build_sampler_aos
*sampler
,
92 LLVMBuilderRef builder
,
94 unsigned target
, /* TGSI_TEXTURE_* */
99 enum lp_build_tex_modifier modifier
);
104 lp_build_tgsi_soa(LLVMBuilderRef builder
,
105 const struct tgsi_token
*tokens
,
107 struct lp_build_mask_context
*mask
,
108 LLVMValueRef consts_ptr
,
109 const LLVMValueRef
*pos
,
110 const LLVMValueRef (*inputs
)[4],
111 LLVMValueRef (*outputs
)[4],
112 struct lp_build_sampler_soa
*sampler
,
113 const struct tgsi_shader_info
*info
);
117 lp_build_tgsi_aos(LLVMBuilderRef builder
,
118 const struct tgsi_token
*tokens
,
120 LLVMValueRef consts_ptr
,
121 const LLVMValueRef
*inputs
,
122 LLVMValueRef
*outputs
,
123 struct lp_build_sampler_aos
*sampler
,
124 const struct tgsi_shader_info
*info
);
127 #endif /* LP_BLD_TGSI_H */