3 * Blending functions operations.
7 * Mesa 3-D graphics library
9 * Copyright (C) 1999-2006 Brian Paul All Rights Reserved.
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:
18 * The above copyright notice and this permission notice shall be included
19 * in all copies or substantial portions of the Software.
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.
39 #include "extensions.h"
42 struct gl_framebuffer
;
45 extern void GLAPIENTRY
46 _mesa_BlendFunc( GLenum sfactor
, GLenum dfactor
);
48 extern void GLAPIENTRY
49 _mesa_BlendFunc_no_error(GLenum sfactor
, GLenum dfactor
);
51 extern void GLAPIENTRY
52 _mesa_BlendFuncSeparate( GLenum sfactorRGB
, GLenum dfactorRGB
,
53 GLenum sfactorA
, GLenum dfactorA
);
55 extern void GLAPIENTRY
56 _mesa_BlendFuncSeparate_no_error(GLenum sfactorRGB
, GLenum dfactorRGB
,
57 GLenum sfactorA
, GLenum dfactorA
);
59 extern void GLAPIENTRY
60 _mesa_BlendFunciARB_no_error(GLuint buf
, GLenum sfactor
, GLenum dfactor
);
61 extern void GLAPIENTRY
62 _mesa_BlendFunciARB(GLuint buf
, GLenum sfactor
, GLenum dfactor
);
65 extern void GLAPIENTRY
66 _mesa_BlendFuncSeparateiARB_no_error(GLuint buf
, GLenum sfactorRGB
,
67 GLenum dfactorRGB
, GLenum sfactorA
,
69 extern void GLAPIENTRY
70 _mesa_BlendFuncSeparateiARB(GLuint buf
, GLenum sfactorRGB
, GLenum dfactorRGB
,
71 GLenum sfactorA
, GLenum dfactorA
);
74 extern void GLAPIENTRY
75 _mesa_BlendEquation( GLenum mode
);
79 _mesa_BlendEquationiARB_no_error(GLuint buf
, GLenum mode
);
81 extern void GLAPIENTRY
82 _mesa_BlendEquationiARB(GLuint buf
, GLenum mode
);
85 extern void GLAPIENTRY
86 _mesa_BlendEquationSeparate( GLenum modeRGB
, GLenum modeA
);
89 extern void GLAPIENTRY
90 _mesa_BlendEquationSeparateiARB_no_error(GLuint buf
, GLenum modeRGB
,
92 extern void GLAPIENTRY
93 _mesa_BlendEquationSeparateiARB(GLuint buf
, GLenum modeRGB
, GLenum modeA
);
96 extern void GLAPIENTRY
97 _mesa_BlendColor(GLclampf red
, GLclampf green
, GLclampf blue
, GLclampf alpha
);
100 extern void GLAPIENTRY
101 _mesa_AlphaFunc( GLenum func
, GLclampf ref
);
104 extern void GLAPIENTRY
105 _mesa_LogicOp( GLenum opcode
);
108 extern void GLAPIENTRY
109 _mesa_LogicOp_no_error(GLenum opcode
);
112 extern void GLAPIENTRY
113 _mesa_IndexMask( GLuint mask
);
115 extern void GLAPIENTRY
116 _mesa_ColorMask( GLboolean red
, GLboolean green
,
117 GLboolean blue
, GLboolean alpha
);
119 extern void GLAPIENTRY
120 _mesa_ColorMaski( GLuint buf
, GLboolean red
, GLboolean green
,
121 GLboolean blue
, GLboolean alpha
);
124 extern void GLAPIENTRY
125 _mesa_ClampColor(GLenum target
, GLenum clamp
);
128 _mesa_get_clamp_fragment_color(const struct gl_context
*ctx
,
129 const struct gl_framebuffer
*drawFb
);
132 _mesa_get_clamp_vertex_color(const struct gl_context
*ctx
,
133 const struct gl_framebuffer
*drawFb
);
136 _mesa_get_clamp_read_color(const struct gl_context
*ctx
,
137 const struct gl_framebuffer
*readFb
);
140 _mesa_update_clamp_fragment_color(struct gl_context
*ctx
,
141 const struct gl_framebuffer
*drawFb
);
144 _mesa_update_clamp_vertex_color(struct gl_context
*ctx
,
145 const struct gl_framebuffer
*drawFb
);
148 _mesa_get_render_format(const struct gl_context
*ctx
, mesa_format format
);
151 _mesa_init_color( struct gl_context
* ctx
);
155 _mesa_flush_vertices_for_blend_state(struct gl_context
*ctx
)
157 /* The advanced blend mode needs _NEW_COLOR to update the state constant,
158 * so we have to set it. This is inefficient.
159 * This should only be done for states that affect the state constant.
160 * It shouldn't be done for other blend states.
162 if (_mesa_has_KHR_blend_equation_advanced(ctx
) ||
163 !ctx
->DriverFlags
.NewBlend
) {
164 FLUSH_VERTICES(ctx
, _NEW_COLOR
);
166 FLUSH_VERTICES(ctx
, 0);
168 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewBlend
;