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#ifndef LP_BLD_BLEND_H
29#define LP_BLD_BLEND_H
30
31
32#include "gallivm/lp_bld.h"
33#include "gallivm/lp_bld_init.h"
34
35#include "pipe/p_format.h"
36
37
38struct pipe_blend_state;
39struct lp_type;
40struct lp_build_context;
41struct lp_build_mask_context;
42
43
44LLVMValueRef
45lp_build_blend(struct lp_build_context *bld,
46               unsigned func,
47               unsigned factor_src,
48               unsigned factor_dst,
49               LLVMValueRef src,
50               LLVMValueRef dst,
51               LLVMValueRef src_factor,
52               LLVMValueRef dst_factor,
53               boolean not_alpha_dependent,
54               boolean optimise_only);
55
56
57LLVMValueRef
58lp_build_blend_aos(struct gallivm_state *gallivm,
59                   const struct pipe_blend_state *blend,
60                   enum pipe_format cbuf_format,
61                   struct lp_type type,
62                   unsigned rt,
63                   LLVMValueRef src,
64                   LLVMValueRef src_alpha,
65                   LLVMValueRef src1,
66                   LLVMValueRef src1_alpha,
67                   LLVMValueRef dst,
68                   LLVMValueRef mask,
69                   LLVMValueRef const_,
70                   LLVMValueRef const_alpha,
71                   const unsigned char swizzle[4],
72                   int nr_channels);
73
74
75/**
76 * Apply a logic op.
77 *
78 * src/dst parameters are packed values. It should work regardless the inputs
79 * are scalars, or a vector.
80 */
81LLVMValueRef
82lp_build_logicop(LLVMBuilderRef builder,
83                 unsigned logicop_func,
84                 LLVMValueRef src,
85                 LLVMValueRef dst);
86
87
88LLVMValueRef
89lp_build_blend_func(struct lp_build_context *bld,
90                    unsigned func,
91                    LLVMValueRef term1,
92                    LLVMValueRef term2);
93
94
95boolean
96lp_build_blend_func_reverse(unsigned rgb_func,
97                            unsigned alpha_func);
98
99
100boolean
101lp_build_blend_func_commutative(unsigned func);
102
103void
104lp_build_alpha_to_coverage(struct gallivm_state *gallivm,
105                           struct lp_type type,
106                           struct lp_build_mask_context *mask,
107                           LLVMValueRef alpha,
108                           boolean do_branch);
109
110#endif /* !LP_BLD_BLEND_H */
111