2 * Mesa 3-D graphics library
4 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included
14 * in all copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22 * OTHER DEALINGS IN THE SOFTWARE.
32 _mesa_update_state(struct gl_context
*ctx
);
34 /* As above but can only be called between _mesa_lock_context_textures() and
35 * _mesa_unlock_context_textures().
38 _mesa_update_state_locked(struct gl_context
*ctx
);
42 _mesa_set_varying_vp_inputs(struct gl_context
*ctx
, GLbitfield64 varying_inputs
);
46 _mesa_set_vp_override(struct gl_context
*ctx
, GLboolean flag
);
50 * Is the secondary color needed?
52 static inline GLboolean
53 _mesa_need_secondary_color(const struct gl_context
*ctx
)
55 if (ctx
->Light
.Enabled
&&
56 ctx
->Light
.Model
.ColorControl
== GL_SEPARATE_SPECULAR_COLOR
)
59 if (ctx
->Fog
.ColorSumEnabled
)
62 if (ctx
->VertexProgram
._Current
&&
63 (ctx
->VertexProgram
._Current
!= ctx
->VertexProgram
._TnlProgram
) &&
64 (ctx
->VertexProgram
._Current
->info
.inputs_read
& VERT_BIT_COLOR1
))
67 if (ctx
->FragmentProgram
._Current
&&
68 (ctx
->FragmentProgram
._Current
!= ctx
->FragmentProgram
._TexEnvProgram
) &&
69 (ctx
->FragmentProgram
._Current
->info
.inputs_read
& VARYING_BIT_COL1
))
76 _mesa_arb_vertex_program_enabled(const struct gl_context
*ctx
)
78 return ctx
->VertexProgram
.Enabled
&&
79 ctx
->VertexProgram
.Current
->arb
.Instructions
;
82 /** Compute two sided lighting state for fixed function or programs. */
84 _mesa_vertex_program_two_side_enabled(const struct gl_context
*ctx
)
86 if (ctx
->_Shader
->CurrentProgram
[MESA_SHADER_VERTEX
] ||
87 _mesa_arb_vertex_program_enabled(ctx
))
88 return ctx
->VertexProgram
.TwoSideEnabled
;
90 return ctx
->Light
.Enabled
&& ctx
->Light
.Model
.TwoSide
;
93 /** Return 0=GL_CCW or 1=GL_CW */
95 _mesa_polygon_get_front_bit(const struct gl_context
*ctx
)
97 if (ctx
->Transform
.ClipOrigin
== GL_LOWER_LEFT
)
98 return ctx
->Polygon
.FrontFace
== GL_CW
;
100 return ctx
->Polygon
.FrontFace
== GL_CCW
;
104 _mesa_arb_fragment_program_enabled(const struct gl_context
*ctx
)
106 return ctx
->FragmentProgram
.Enabled
&&
107 ctx
->FragmentProgram
.Current
->arb
.Instructions
;
111 _mesa_ati_fragment_shader_enabled(const struct gl_context
*ctx
)
113 return ctx
->ATIFragmentShader
.Enabled
&&
114 ctx
->ATIFragmentShader
.Current
->Instructions
[0];