1 /**************************************************************************
3 * Copyright 2003 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
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.
26 **************************************************************************/
29 #include "main/glheader.h"
30 #include "main/context.h"
31 #include "main/macros.h"
32 #include "main/enums.h"
33 #include "main/colormac.h"
36 #include "intel_screen.h"
37 #include "brw_context.h"
38 #include "brw_defines.h"
41 intel_translate_shadow_compare_func(GLenum func
)
43 /* GL specifies the result of shadow comparisons as:
44 * 1 if ref <op> texel,
48 * 0 if texel <op> ref,
51 * So, these look a bit strange because there's both a negation
52 * and swapping of the arguments involved.
56 return BRW_COMPAREFUNCTION_ALWAYS
;
58 return BRW_COMPAREFUNCTION_LEQUAL
;
60 return BRW_COMPAREFUNCTION_LESS
;
62 return BRW_COMPAREFUNCTION_GEQUAL
;
64 return BRW_COMPAREFUNCTION_GREATER
;
66 return BRW_COMPAREFUNCTION_EQUAL
;
68 return BRW_COMPAREFUNCTION_NOTEQUAL
;
70 return BRW_COMPAREFUNCTION_NEVER
;
73 unreachable("Invalid shadow comparison function.");
77 intel_translate_compare_func(GLenum func
)
81 return BRW_COMPAREFUNCTION_NEVER
;
83 return BRW_COMPAREFUNCTION_LESS
;
85 return BRW_COMPAREFUNCTION_LEQUAL
;
87 return BRW_COMPAREFUNCTION_GREATER
;
89 return BRW_COMPAREFUNCTION_GEQUAL
;
91 return BRW_COMPAREFUNCTION_NOTEQUAL
;
93 return BRW_COMPAREFUNCTION_EQUAL
;
95 return BRW_COMPAREFUNCTION_ALWAYS
;
98 unreachable("Invalid comparison function.");
102 intel_translate_stencil_op(GLenum op
)
106 return BRW_STENCILOP_KEEP
;
108 return BRW_STENCILOP_ZERO
;
110 return BRW_STENCILOP_REPLACE
;
112 return BRW_STENCILOP_INCRSAT
;
114 return BRW_STENCILOP_DECRSAT
;
116 return BRW_STENCILOP_INCR
;
118 return BRW_STENCILOP_DECR
;
120 return BRW_STENCILOP_INVERT
;
122 return BRW_STENCILOP_ZERO
;
127 intel_translate_logic_op(GLenum opcode
)
131 return BRW_LOGICOPFUNCTION_CLEAR
;
133 return BRW_LOGICOPFUNCTION_AND
;
135 return BRW_LOGICOPFUNCTION_AND_REVERSE
;
137 return BRW_LOGICOPFUNCTION_COPY
;
138 case GL_COPY_INVERTED
:
139 return BRW_LOGICOPFUNCTION_COPY_INVERTED
;
140 case GL_AND_INVERTED
:
141 return BRW_LOGICOPFUNCTION_AND_INVERTED
;
143 return BRW_LOGICOPFUNCTION_NOOP
;
145 return BRW_LOGICOPFUNCTION_XOR
;
147 return BRW_LOGICOPFUNCTION_OR
;
149 return BRW_LOGICOPFUNCTION_OR_INVERTED
;
151 return BRW_LOGICOPFUNCTION_NOR
;
153 return BRW_LOGICOPFUNCTION_EQUIV
;
155 return BRW_LOGICOPFUNCTION_INVERT
;
157 return BRW_LOGICOPFUNCTION_OR_REVERSE
;
159 return BRW_LOGICOPFUNCTION_NAND
;
161 return BRW_LOGICOPFUNCTION_SET
;
163 return BRW_LOGICOPFUNCTION_SET
;