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"
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"
40 #include "util/u_memory.h"
43 #include "t_context.h"
44 #include "t_pipeline.h"
49 _tnl_CreateContext( struct gl_context
*ctx
)
54 /* Create the TNLcontext structure
56 ctx
->swtnl_context
= tnl
= calloc(1, sizeof(TNLcontext
));
64 tnl
->vb
.Size
= ctx
->Const
.MaxArrayLockSize
+ MAX_CLIPPED_VERTICES
;
67 /* Initialize tnl state.
69 if (ctx
->VertexProgram
._MaintainTnlProgram
) {
70 _tnl_install_pipeline( ctx
, _tnl_vp_pipeline
);
72 _tnl_install_pipeline( ctx
, _tnl_default_pipeline
);
75 _math_matrix_ctr(&tnl
->_WindowMap
);
77 tnl
->NeedNdcCoords
= GL_TRUE
;
78 tnl
->AllowVertexFog
= GL_TRUE
;
79 tnl
->AllowPixelFog
= GL_TRUE
;
81 /* Set a few default values in the driver struct.
83 tnl
->Driver
.Render
.PrimTabElts
= _tnl_render_tab_elts
;
84 tnl
->Driver
.Render
.PrimTabVerts
= _tnl_render_tab_verts
;
85 tnl
->Driver
.NotifyMaterialChange
= _tnl_validate_shine_tables
;
89 /* Lighting miscellaneous */
90 tnl
->_ShineTabList
= MALLOC_STRUCT( tnl_shine_tab
);
91 make_empty_list( tnl
->_ShineTabList
);
92 /* Allocate 10 (arbitrary) shininess lookup tables */
93 for (i
= 0 ; i
< 10 ; i
++) {
94 struct tnl_shine_tab
*s
= MALLOC_STRUCT( tnl_shine_tab
);
97 insert_at_tail( tnl
->_ShineTabList
, s
);
100 _math_init_transformation();
101 _math_init_translate();
103 /* Keep our list of tnl_vertex_array inputs */
104 _tnl_init_inputs(&tnl
->draw_arrays
);
111 _tnl_DestroyContext( struct gl_context
*ctx
)
113 struct tnl_shine_tab
*s
, *tmps
;
114 TNLcontext
*tnl
= TNL_CONTEXT(ctx
);
116 _math_matrix_dtr(&tnl
->_WindowMap
);
118 /* Free lighting shininess exponentiation table */
119 foreach_s( s
, tmps
, tnl
->_ShineTabList
) {
122 free( tnl
->_ShineTabList
);
124 _tnl_destroy_pipeline( ctx
);
127 ctx
->swtnl_context
= NULL
;
132 _tnl_InvalidateState( struct gl_context
*ctx
, GLuint new_state
)
134 TNLcontext
*tnl
= TNL_CONTEXT(ctx
);
135 const struct gl_program
*vp
= ctx
->VertexProgram
._Current
;
136 const struct gl_program
*fp
= ctx
->FragmentProgram
._Current
;
139 if (new_state
& (_NEW_HINT
| _NEW_PROGRAM
)) {
140 assert(tnl
->AllowVertexFog
|| tnl
->AllowPixelFog
);
141 tnl
->_DoVertexFog
= ((tnl
->AllowVertexFog
&& (ctx
->Hint
.Fog
!= GL_NICEST
))
142 || !tnl
->AllowPixelFog
) && !fp
;
145 tnl
->pipeline
.new_state
|= new_state
;
147 /* Calculate tnl->render_inputs. This bitmask indicates which vertex
148 * attributes need to be emitted to the rasterizer.
150 tnl
->render_inputs_bitset
= BITFIELD64_BIT(_TNL_ATTRIB_POS
);
152 if (!fp
|| (fp
->info
.inputs_read
& VARYING_BIT_COL0
)) {
153 tnl
->render_inputs_bitset
|= BITFIELD64_BIT(_TNL_ATTRIB_COLOR0
);
156 if (_mesa_need_secondary_color(ctx
))
157 tnl
->render_inputs_bitset
|= BITFIELD64_BIT(_TNL_ATTRIB_COLOR1
);
159 for (i
= 0; i
< ctx
->Const
.MaxTextureCoordUnits
; i
++) {
160 if (ctx
->Texture
._EnabledCoordUnits
& (1 << i
) ||
161 (fp
&& fp
->info
.inputs_read
& VARYING_BIT_TEX(i
)) ||
162 _mesa_ati_fragment_shader_enabled(ctx
)) {
163 tnl
->render_inputs_bitset
|= BITFIELD64_BIT(_TNL_ATTRIB_TEX(i
));
168 || (fp
!= NULL
&& (fp
->info
.inputs_read
& VARYING_BIT_FOGC
) != 0)) {
169 /* Either fixed-function fog or a fragment program needs fog coord.
171 tnl
->render_inputs_bitset
|= BITFIELD64_BIT(_TNL_ATTRIB_FOG
);
174 if (ctx
->Polygon
.FrontMode
!= GL_FILL
||
175 ctx
->Polygon
.BackMode
!= GL_FILL
)
176 tnl
->render_inputs_bitset
|= BITFIELD64_BIT(_TNL_ATTRIB_EDGEFLAG
);
178 if (ctx
->RenderMode
== GL_FEEDBACK
)
179 tnl
->render_inputs_bitset
|= BITFIELD64_BIT(_TNL_ATTRIB_TEX0
);
181 if (ctx
->Point
._Attenuated
|| ctx
->VertexProgram
.PointSizeEnabled
)
182 tnl
->render_inputs_bitset
|= BITFIELD64_BIT(_TNL_ATTRIB_POINTSIZE
);
184 /* check for varying vars which are written by the vertex program */
187 for (i
= 0; i
< MAX_VARYING
; i
++) {
188 if (vp
->info
.outputs_written
&
189 BITFIELD64_BIT(VARYING_SLOT_VAR0
+ i
)) {
190 tnl
->render_inputs_bitset
|= BITFIELD64_BIT(_TNL_ATTRIB_GENERIC(i
));
195 if (new_state
& (_NEW_VIEWPORT
| _NEW_BUFFERS
)) {
196 float scale
[3], translate
[3];
197 _mesa_get_viewport_xform(ctx
, 0, scale
, translate
);
198 _math_matrix_viewport(&tnl
->_WindowMap
, scale
, translate
,
199 ctx
->DrawBuffer
->_DepthMaxF
);
205 _tnl_wakeup( struct gl_context
*ctx
)
207 /* Assume we haven't been getting state updates either:
209 _tnl_InvalidateState( ctx
, ~0 );
212 if (ctx
->Light
.ColorMaterialEnabled
) {
213 _mesa_update_color_material( ctx
,
214 ctx
->Current
.Attrib
[VERT_ATTRIB_COLOR0
] );
223 * Drivers call this function to tell the TCL module whether or not
224 * it wants Normalized Device Coords (NDC) computed. I.e. whether
225 * we should "Divide-by-W". Software renders will want that.
228 _tnl_need_projected_coords( struct gl_context
*ctx
, GLboolean mode
)
230 TNLcontext
*tnl
= TNL_CONTEXT(ctx
);
231 tnl
->NeedNdcCoords
= mode
;
235 _tnl_allow_vertex_fog( struct gl_context
*ctx
, GLboolean value
)
237 TNLcontext
*tnl
= TNL_CONTEXT(ctx
);
238 tnl
->AllowVertexFog
= value
;
239 tnl
->_DoVertexFog
= ((tnl
->AllowVertexFog
&& (ctx
->Hint
.Fog
!= GL_NICEST
))
240 || !tnl
->AllowPixelFog
) && !ctx
->FragmentProgram
._Current
;
245 _tnl_allow_pixel_fog( struct gl_context
*ctx
, GLboolean value
)
247 TNLcontext
*tnl
= TNL_CONTEXT(ctx
);
248 tnl
->AllowPixelFog
= value
;
249 tnl
->_DoVertexFog
= ((tnl
->AllowVertexFog
&& (ctx
->Hint
.Fog
!= GL_NICEST
))
250 || !tnl
->AllowPixelFog
) && !ctx
->FragmentProgram
._Current
;