1 /**
2  * \file blend.h
3  * Blending functions operations.
4  */
5 
6 /*
7  * Mesa 3-D graphics library
8  *
9  * Copyright (C) 1999-2006  Brian Paul   All Rights Reserved.
10  *
11  * Permission is hereby granted, free of charge, to any person obtaining a
12  * copy of this software and associated documentation files (the "Software"),
13  * to deal in the Software without restriction, including without limitation
14  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
15  * and/or sell copies of the Software, and to permit persons to whom the
16  * Software is furnished to do so, subject to the following conditions:
17  *
18  * The above copyright notice and this permission notice shall be included
19  * in all copies or substantial portions of the Software.
20  *
21  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
22  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
23  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
24  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
25  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
26  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
27  * OTHER DEALINGS IN THE SOFTWARE.
28  */
29 
30 
31 
32 #ifndef BLEND_H
33 #define BLEND_H
34 
35 
36 #include "glheader.h"
37 #include "formats.h"
38 
39 struct gl_context;
40 struct gl_framebuffer;
41 
42 
43 extern void GLAPIENTRY
44 _mesa_BlendFunc( GLenum sfactor, GLenum dfactor );
45 
46 
47 extern void GLAPIENTRY
48 _mesa_BlendFuncSeparate( GLenum sfactorRGB, GLenum dfactorRGB,
49                             GLenum sfactorA, GLenum dfactorA );
50 
51 
52 extern void GLAPIENTRY
53 _mesa_BlendFunciARB(GLuint buf, GLenum sfactor, GLenum dfactor);
54 
55 
56 extern void GLAPIENTRY
57 _mesa_BlendFuncSeparateiARB(GLuint buf, GLenum sfactorRGB, GLenum dfactorRGB,
58                          GLenum sfactorA, GLenum dfactorA);
59 
60 
61 extern void GLAPIENTRY
62 _mesa_BlendEquation( GLenum mode );
63 
64 
65 extern void GLAPIENTRY
66 _mesa_BlendEquationiARB(GLuint buf, GLenum mode);
67 
68 
69 extern void GLAPIENTRY
70 _mesa_BlendEquationSeparate( GLenum modeRGB, GLenum modeA );
71 
72 
73 extern void GLAPIENTRY
74 _mesa_BlendEquationSeparateiARB(GLuint buf, GLenum modeRGB, GLenum modeA);
75 
76 
77 extern void GLAPIENTRY
78 _mesa_BlendColor(GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha);
79 
80 
81 extern void GLAPIENTRY
82 _mesa_AlphaFunc( GLenum func, GLclampf ref );
83 
84 
85 extern void GLAPIENTRY
86 _mesa_LogicOp( GLenum opcode );
87 
88 
89 extern void GLAPIENTRY
90 _mesa_IndexMask( GLuint mask );
91 
92 extern void GLAPIENTRY
93 _mesa_ColorMask( GLboolean red, GLboolean green,
94                  GLboolean blue, GLboolean alpha );
95 
96 extern void GLAPIENTRY
97 _mesa_ColorMaski( GLuint buf, GLboolean red, GLboolean green,
98                         GLboolean blue, GLboolean alpha );
99 
100 
101 extern void GLAPIENTRY
102 _mesa_ClampColor(GLenum target, GLenum clamp);
103 
104 extern GLboolean
105 _mesa_get_clamp_fragment_color(const struct gl_context *ctx,
106                                const struct gl_framebuffer *drawFb);
107 
108 extern GLboolean
109 _mesa_get_clamp_vertex_color(const struct gl_context *ctx,
110                              const struct gl_framebuffer *drawFb);
111 
112 extern GLboolean
113 _mesa_get_clamp_read_color(const struct gl_context *ctx,
114                            const struct gl_framebuffer *readFb);
115 
116 extern void
117 _mesa_update_clamp_fragment_color(struct gl_context *ctx,
118                                   const struct gl_framebuffer *drawFb);
119 
120 extern void
121 _mesa_update_clamp_vertex_color(struct gl_context *ctx,
122                                 const struct gl_framebuffer *drawFb);
123 
124 extern mesa_format
125 _mesa_get_render_format(const struct gl_context *ctx, mesa_format format);
126 
127 extern void
128 _mesa_init_color( struct gl_context * ctx );
129 
130 #endif
131