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.
25 * Keith Whitwell <keithw@vmware.com>
29 #include "main/glheader.h"
30 #include "main/imports.h"
31 #include "main/context.h"
32 #include "main/macros.h"
33 #include "main/mtypes.h"
34 #include "main/light.h"
35 #include "math/m_translate.h"
36 #include "math/m_xform.h"
37 #include "main/state.h"
38 #include "main/viewport.h"
39 #include "util/simple_list.h"
42 #include "t_context.h"
43 #include "t_pipeline.h"
48 _tnl_CreateContext( struct gl_context
*ctx
)
53 /* Create the TNLcontext structure
55 ctx
->swtnl_context
= tnl
= calloc(1, sizeof(TNLcontext
));
63 tnl
->vb
.Size
= ctx
->Const
.MaxArrayLockSize
+ MAX_CLIPPED_VERTICES
;
66 /* Initialize tnl state.
68 if (ctx
->VertexProgram
._MaintainTnlProgram
) {
69 _tnl_install_pipeline( ctx
, _tnl_vp_pipeline
);
71 _tnl_install_pipeline( ctx
, _tnl_default_pipeline
);
74 _math_matrix_ctr(&tnl
->_WindowMap
);
76 tnl
->NeedNdcCoords
= GL_TRUE
;
77 tnl
->AllowVertexFog
= GL_TRUE
;
78 tnl
->AllowPixelFog
= GL_TRUE
;
80 /* Set a few default values in the driver struct.
82 tnl
->Driver
.Render
.PrimTabElts
= _tnl_render_tab_elts
;
83 tnl
->Driver
.Render
.PrimTabVerts
= _tnl_render_tab_verts
;
84 tnl
->Driver
.NotifyMaterialChange
= _tnl_validate_shine_tables
;
88 /* Lighting miscellaneous */
89 tnl
->_ShineTabList
= MALLOC_STRUCT( tnl_shine_tab
);
90 make_empty_list( tnl
->_ShineTabList
);
91 /* Allocate 10 (arbitrary) shininess lookup tables */
92 for (i
= 0 ; i
< 10 ; i
++) {
93 struct tnl_shine_tab
*s
= MALLOC_STRUCT( tnl_shine_tab
);
96 insert_at_tail( tnl
->_ShineTabList
, s
);
99 /* plug in the VBO drawing function */
100 vbo_set_draw_func(ctx
, _tnl_draw_prims
);
102 _math_init_transformation();
103 _math_init_translate();
110 _tnl_DestroyContext( struct gl_context
*ctx
)
112 struct tnl_shine_tab
*s
, *tmps
;
113 TNLcontext
*tnl
= TNL_CONTEXT(ctx
);
115 _math_matrix_dtr(&tnl
->_WindowMap
);
117 /* Free lighting shininess exponentiation table */
118 foreach_s( s
, tmps
, tnl
->_ShineTabList
) {
121 free( tnl
->_ShineTabList
);
123 _tnl_destroy_pipeline( ctx
);
126 ctx
->swtnl_context
= NULL
;
131 _tnl_InvalidateState( struct gl_context
*ctx
, GLuint new_state
)
133 TNLcontext
*tnl
= TNL_CONTEXT(ctx
);
134 const struct gl_program
*vp
= ctx
->VertexProgram
._Current
;
135 const struct gl_fragment_program
*fp
= ctx
->FragmentProgram
._Current
;
138 if (new_state
& (_NEW_HINT
| _NEW_PROGRAM
)) {
139 assert(tnl
->AllowVertexFog
|| tnl
->AllowPixelFog
);
140 tnl
->_DoVertexFog
= ((tnl
->AllowVertexFog
&& (ctx
->Hint
.Fog
!= GL_NICEST
))
141 || !tnl
->AllowPixelFog
) && !fp
;
144 tnl
->pipeline
.new_state
|= new_state
;
146 /* Calculate tnl->render_inputs. This bitmask indicates which vertex
147 * attributes need to be emitted to the rasterizer.
149 tnl
->render_inputs_bitset
= BITFIELD64_BIT(_TNL_ATTRIB_POS
);
151 if (!fp
|| (fp
->Base
.InputsRead
& VARYING_BIT_COL0
)) {
152 tnl
->render_inputs_bitset
|= BITFIELD64_BIT(_TNL_ATTRIB_COLOR0
);
155 if (_mesa_need_secondary_color(ctx
))
156 tnl
->render_inputs_bitset
|= BITFIELD64_BIT(_TNL_ATTRIB_COLOR1
);
158 for (i
= 0; i
< ctx
->Const
.MaxTextureCoordUnits
; i
++) {
159 if (ctx
->Texture
._EnabledCoordUnits
& (1 << i
) ||
160 (fp
&& fp
->Base
.InputsRead
& VARYING_BIT_TEX(i
))) {
161 tnl
->render_inputs_bitset
|= BITFIELD64_BIT(_TNL_ATTRIB_TEX(i
));
166 || (fp
!= NULL
&& (fp
->Base
.InputsRead
& VARYING_BIT_FOGC
) != 0)) {
167 /* Either fixed-function fog or a fragment program needs fog coord.
169 tnl
->render_inputs_bitset
|= BITFIELD64_BIT(_TNL_ATTRIB_FOG
);
172 if (ctx
->Polygon
.FrontMode
!= GL_FILL
||
173 ctx
->Polygon
.BackMode
!= GL_FILL
)
174 tnl
->render_inputs_bitset
|= BITFIELD64_BIT(_TNL_ATTRIB_EDGEFLAG
);
176 if (ctx
->RenderMode
== GL_FEEDBACK
)
177 tnl
->render_inputs_bitset
|= BITFIELD64_BIT(_TNL_ATTRIB_TEX0
);
179 if (ctx
->Point
._Attenuated
|| ctx
->VertexProgram
.PointSizeEnabled
)
180 tnl
->render_inputs_bitset
|= BITFIELD64_BIT(_TNL_ATTRIB_POINTSIZE
);
182 /* check for varying vars which are written by the vertex program */
185 for (i
= 0; i
< MAX_VARYING
; i
++) {
186 if (vp
->OutputsWritten
& BITFIELD64_BIT(VARYING_SLOT_VAR0
+ i
)) {
187 tnl
->render_inputs_bitset
|= BITFIELD64_BIT(_TNL_ATTRIB_GENERIC(i
));
192 if (new_state
& (_NEW_VIEWPORT
| _NEW_BUFFERS
)) {
193 float scale
[3], translate
[3];
194 _mesa_get_viewport_xform(ctx
, 0, scale
, translate
);
195 _math_matrix_viewport(&tnl
->_WindowMap
, scale
, translate
,
196 ctx
->DrawBuffer
->_DepthMaxF
);
202 _tnl_wakeup( struct gl_context
*ctx
)
204 /* Assume we haven't been getting state updates either:
206 _tnl_InvalidateState( ctx
, ~0 );
209 if (ctx
->Light
.ColorMaterialEnabled
) {
210 _mesa_update_color_material( ctx
,
211 ctx
->Current
.Attrib
[VERT_ATTRIB_COLOR0
] );
220 * Drivers call this function to tell the TCL module whether or not
221 * it wants Normalized Device Coords (NDC) computed. I.e. whether
222 * we should "Divide-by-W". Software renders will want that.
225 _tnl_need_projected_coords( struct gl_context
*ctx
, GLboolean mode
)
227 TNLcontext
*tnl
= TNL_CONTEXT(ctx
);
228 tnl
->NeedNdcCoords
= mode
;
232 _tnl_allow_vertex_fog( struct gl_context
*ctx
, GLboolean value
)
234 TNLcontext
*tnl
= TNL_CONTEXT(ctx
);
235 tnl
->AllowVertexFog
= value
;
236 tnl
->_DoVertexFog
= ((tnl
->AllowVertexFog
&& (ctx
->Hint
.Fog
!= GL_NICEST
))
237 || !tnl
->AllowPixelFog
) && !ctx
->FragmentProgram
._Current
;
242 _tnl_allow_pixel_fog( struct gl_context
*ctx
, GLboolean value
)
244 TNLcontext
*tnl
= TNL_CONTEXT(ctx
);
245 tnl
->AllowPixelFog
= value
;
246 tnl
->_DoVertexFog
= ((tnl
->AllowVertexFog
&& (ctx
->Hint
.Fog
!= GL_NICEST
))
247 || !tnl
->AllowPixelFog
) && !ctx
->FragmentProgram
._Current
;