2 * Copyright (C) 2009-2010 Francisco Jerez.
5 * Permission is hereby granted, free of charge, to any person obtaining
6 * a copy of this software and associated documentation files (the
7 * "Software"), to deal in the Software without restriction, including
8 * without limitation the rights to use, copy, modify, merge, publish,
9 * distribute, sublicense, and/or sell copies of the Software, and to
10 * permit persons to whom the Software is furnished to do so, subject to
11 * the following conditions:
13 * The above copyright notice and this permission notice (including the
14 * next paragraph) shall be included in all copies or substantial
15 * portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
18 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
20 * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
21 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
22 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
23 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
27 #include "nouveau_driver.h"
28 #include "nouveau_context.h"
29 #include "nouveau_gldefs.h"
30 #include "nouveau_util.h"
31 #include "nouveau_class.h"
32 #include "nv10_driver.h"
35 nv10_emit_clip_plane(GLcontext
*ctx
, int emit
)
39 static inline unsigned
40 get_material_bitmask(unsigned m
)
44 if (m
& MAT_BIT_FRONT_EMISSION
)
45 ret
|= NV10TCL_COLOR_MATERIAL_EMISSION
;
46 if (m
& MAT_BIT_FRONT_AMBIENT
)
47 ret
|= NV10TCL_COLOR_MATERIAL_AMBIENT
;
48 if (m
& MAT_BIT_FRONT_DIFFUSE
)
49 ret
|= NV10TCL_COLOR_MATERIAL_DIFFUSE
;
50 if (m
& MAT_BIT_FRONT_SPECULAR
)
51 ret
|= NV10TCL_COLOR_MATERIAL_SPECULAR
;
57 nv10_emit_color_material(GLcontext
*ctx
, int emit
)
59 struct nouveau_channel
*chan
= context_chan(ctx
);
60 struct nouveau_grobj
*celsius
= context_eng3d(ctx
);
61 unsigned mask
= get_material_bitmask(ctx
->Light
.ColorMaterialBitmask
);
63 BEGIN_RING(chan
, celsius
, NV10TCL_COLOR_MATERIAL
, 1);
64 OUT_RING(chan
, ctx
->Light
.ColorMaterialEnabled
? mask
: 0);
68 get_fog_mode(unsigned mode
)
72 return NV10TCL_FOG_MODE_LINEAR
;
74 return NV10TCL_FOG_MODE_EXP
;
76 return NV10TCL_FOG_MODE_EXP2
;
83 get_fog_source(unsigned source
)
86 case GL_FOG_COORDINATE_EXT
:
87 return NV10TCL_FOG_COORD_FOG
;
88 case GL_FRAGMENT_DEPTH_EXT
:
89 return NV10TCL_FOG_COORD_DIST_ORTHOGONAL_ABS
;
96 nv10_get_fog_coeff(GLcontext
*ctx
, float k
[3])
98 struct gl_fog_attrib
*f
= &ctx
->Fog
;
102 k
[0] = 2 + f
->Start
/ (f
->End
- f
->Start
);
103 k
[1] = -1 / (f
->End
- f
->Start
);
108 k
[1] = -0.09 * f
->Density
;
113 k
[1] = -0.21 * f
->Density
;
124 nv10_emit_fog(GLcontext
*ctx
, int emit
)
126 struct nouveau_context
*nctx
= to_nouveau_context(ctx
);
127 struct nouveau_channel
*chan
= context_chan(ctx
);
128 struct nouveau_grobj
*celsius
= context_eng3d(ctx
);
129 struct gl_fog_attrib
*f
= &ctx
->Fog
;
130 unsigned source
= nctx
->fallback
== HWTNL
?
131 f
->FogCoordinateSource
: GL_FOG_COORDINATE_EXT
;
134 nv10_get_fog_coeff(ctx
, k
);
136 BEGIN_RING(chan
, celsius
, NV10TCL_FOG_MODE
, 4);
137 OUT_RING(chan
, get_fog_mode(f
->Mode
));
138 OUT_RING(chan
, get_fog_source(source
));
139 OUT_RING(chan
, f
->Enabled
? 1 : 0);
140 OUT_RING(chan
, pack_rgba_f(MESA_FORMAT_RGBA8888_REV
, f
->Color
));
142 BEGIN_RING(chan
, celsius
, NV10TCL_FOG_EQUATION_CONSTANT
, 3);
143 OUT_RINGp(chan
, k
, 3);
145 context_dirty(ctx
, FRAG
);
148 static inline unsigned
149 get_light_mode(struct gl_light
*l
)
152 if (l
->_Flags
& LIGHT_SPOT
)
153 return NV10TCL_ENABLED_LIGHTS_0_DIRECTIONAL
;
154 else if (l
->_Flags
& LIGHT_POSITIONAL
)
155 return NV10TCL_ENABLED_LIGHTS_0_POSITIONAL
;
157 return NV10TCL_ENABLED_LIGHTS_0_NONPOSITIONAL
;
159 return NV10TCL_ENABLED_LIGHTS_0_DISABLED
;
164 nv10_emit_light_enable(GLcontext
*ctx
, int emit
)
166 struct nouveau_context
*nctx
= to_nouveau_context(ctx
);
167 struct nouveau_channel
*chan
= context_chan(ctx
);
168 struct nouveau_grobj
*celsius
= context_eng3d(ctx
);
169 uint32_t en_lights
= 0;
172 if (nctx
->fallback
!= HWTNL
) {
173 BEGIN_RING(chan
, celsius
, NV10TCL_LIGHTING_ENABLE
, 1);
178 for (i
= 0; i
< MAX_LIGHTS
; i
++)
179 en_lights
|= get_light_mode(&ctx
->Light
.Light
[i
]) << 2 * i
;
181 BEGIN_RING(chan
, celsius
, NV10TCL_ENABLED_LIGHTS
, 1);
182 OUT_RING(chan
, en_lights
);
183 BEGIN_RING(chan
, celsius
, NV10TCL_LIGHTING_ENABLE
, 1);
184 OUT_RING(chan
, ctx
->Light
.Enabled
? 1 : 0);
185 BEGIN_RING(chan
, celsius
, NV10TCL_NORMALIZE_ENABLE
, 1);
186 OUT_RING(chan
, ctx
->Transform
.Normalize
? 1 : 0);
190 nv10_emit_light_model(GLcontext
*ctx
, int emit
)
192 struct nouveau_channel
*chan
= context_chan(ctx
);
193 struct nouveau_grobj
*celsius
= context_eng3d(ctx
);
194 struct gl_lightmodel
*m
= &ctx
->Light
.Model
;
196 BEGIN_RING(chan
, celsius
, NV10TCL_SEPARATE_SPECULAR_ENABLE
, 1);
197 OUT_RING(chan
, m
->ColorControl
== GL_SEPARATE_SPECULAR_COLOR
? 1 : 0);
199 BEGIN_RING(chan
, celsius
, NV10TCL_LIGHT_MODEL
, 1);
200 OUT_RING(chan
, ((m
->LocalViewer
?
201 NV10TCL_LIGHT_MODEL_LOCAL_VIEWER
: 0) |
202 (NEED_SECONDARY_COLOR(ctx
) ?
203 NV10TCL_LIGHT_MODEL_SEPARATE_SPECULAR
: 0) |
204 (!ctx
->Light
.Enabled
&& ctx
->Fog
.ColorSumEnabled
?
205 NV10TCL_LIGHT_MODEL_VERTEX_SPECULAR
: 0)));
209 get_shine(const float p
[], float x
)
212 const float *y
= &p
[1];
213 float f
= (n
- 1) * (1 - 1 / (1 + p
[0] * x
))
214 / (1 - 1 / (1 + p
[0] * 1024));
217 /* Linear interpolation in f-space (Faster and somewhat more
218 * accurate than x-space). */
224 return y
[i
] + (y
[i
+ 1] - y
[i
]) * (f
- i
);
227 static const float nv10_spot_params
[2][16] = {
228 { 0.02, -3.80e-05, -1.77, -2.41, -2.71, -2.88, -2.98, -3.06,
229 -3.11, -3.17, -3.23, -3.28, -3.37, -3.47, -3.83, -5.11 },
230 { 0.02, -0.01, 1.77, 2.39, 2.70, 2.87, 2.98, 3.06,
231 3.10, 3.16, 3.23, 3.27, 3.37, 3.47, 3.83, 5.11 },
235 nv10_get_spot_coeff(struct gl_light
*l
, float k
[7])
237 float e
= l
->SpotExponent
;
238 float a0
, b0
, a1
, a2
, b2
, a3
;
241 a0
= -1 - 5.36e-3 / sqrt(e
);
244 b0
= 1 / (1 + 0.273 * e
);
246 a1
= get_shine(nv10_spot_params
[0], e
);
248 a2
= get_shine(nv10_spot_params
[1], e
);
249 b2
= 1 / (1 + 0.273 * e
);
251 a3
= 0.9 + 0.278 * e
;
253 if (l
->SpotCutoff
> 0) {
254 float cutoff
= MAX2(a3
, 1 / (1 - l
->_CosCutoff
));
256 k
[0] = MAX2(0, a0
+ b0
* cutoff
);
258 k
[2] = a2
+ b2
* cutoff
;
259 k
[3] = - cutoff
* l
->_NormSpotDirection
[0];
260 k
[4] = - cutoff
* l
->_NormSpotDirection
[1];
261 k
[5] = - cutoff
* l
->_NormSpotDirection
[2];
268 k
[3] = - l
->_NormSpotDirection
[0];
269 k
[4] = - l
->_NormSpotDirection
[1];
270 k
[5] = - l
->_NormSpotDirection
[2];
276 nv10_emit_light_source(GLcontext
*ctx
, int emit
)
278 const int i
= emit
- NOUVEAU_STATE_LIGHT_SOURCE0
;
279 struct nouveau_channel
*chan
= context_chan(ctx
);
280 struct nouveau_grobj
*celsius
= context_eng3d(ctx
);
281 struct gl_light
*l
= &ctx
->Light
.Light
[i
];
283 if (l
->_Flags
& LIGHT_POSITIONAL
) {
284 BEGIN_RING(chan
, celsius
, NV10TCL_LIGHT_POSITION_X(i
), 3);
285 OUT_RINGp(chan
, l
->_Position
, 3);
287 BEGIN_RING(chan
, celsius
,
288 NV10TCL_LIGHT_ATTENUATION_CONSTANT(i
), 3);
289 OUT_RINGf(chan
, l
->ConstantAttenuation
);
290 OUT_RINGf(chan
, l
->LinearAttenuation
);
291 OUT_RINGf(chan
, l
->QuadraticAttenuation
);
294 BEGIN_RING(chan
, celsius
, NV10TCL_LIGHT_DIRECTION_X(i
), 3);
295 OUT_RINGp(chan
, l
->_VP_inf_norm
, 3);
297 BEGIN_RING(chan
, celsius
, NV10TCL_LIGHT_HALF_VECTOR_X(i
), 3);
298 OUT_RINGp(chan
, l
->_h_inf_norm
, 3);
301 if (l
->_Flags
& LIGHT_SPOT
) {
304 nv10_get_spot_coeff(l
, k
);
306 BEGIN_RING(chan
, celsius
, NV10TCL_LIGHT_SPOT_CUTOFF_A(i
), 7);
307 OUT_RINGp(chan
, k
, 7);
311 #define USE_COLOR_MATERIAL(attr) \
312 (ctx->Light.ColorMaterialEnabled && \
313 ctx->Light.ColorMaterialBitmask & (1 << MAT_ATTRIB_FRONT_##attr))
316 nv10_emit_material_ambient(GLcontext
*ctx
, int emit
)
318 struct nouveau_channel
*chan
= context_chan(ctx
);
319 struct nouveau_grobj
*celsius
= context_eng3d(ctx
);
320 float (*mat
)[4] = ctx
->Light
.Material
.Attrib
;
321 float c_scene
[3], c_factor
[3];
324 if (USE_COLOR_MATERIAL(AMBIENT
)) {
325 COPY_3V(c_scene
, ctx
->Light
.Model
.Ambient
);
326 COPY_3V(c_factor
, mat
[MAT_ATTRIB_FRONT_EMISSION
]);
328 } else if (USE_COLOR_MATERIAL(EMISSION
)) {
329 SCALE_3V(c_scene
, mat
[MAT_ATTRIB_FRONT_AMBIENT
],
330 ctx
->Light
.Model
.Ambient
);
334 COPY_3V(c_scene
, ctx
->Light
._BaseColor
[0]);
338 BEGIN_RING(chan
, celsius
, NV10TCL_LIGHT_MODEL_AMBIENT_R
, 3);
339 OUT_RINGp(chan
, c_scene
, 3);
341 if (ctx
->Light
.ColorMaterialEnabled
) {
342 BEGIN_RING(chan
, celsius
, NV10TCL_MATERIAL_FACTOR_R
, 3);
343 OUT_RINGp(chan
, c_factor
, 3);
346 foreach(l
, &ctx
->Light
.EnabledList
) {
347 const int i
= l
- ctx
->Light
.Light
;
348 float *c_light
= (USE_COLOR_MATERIAL(AMBIENT
) ?
352 BEGIN_RING(chan
, celsius
, NV10TCL_LIGHT_AMBIENT_R(i
), 3);
353 OUT_RINGp(chan
, c_light
, 3);
358 nv10_emit_material_diffuse(GLcontext
*ctx
, int emit
)
360 struct nouveau_channel
*chan
= context_chan(ctx
);
361 struct nouveau_grobj
*celsius
= context_eng3d(ctx
);
362 GLfloat (*mat
)[4] = ctx
->Light
.Material
.Attrib
;
365 BEGIN_RING(chan
, celsius
, NV10TCL_MATERIAL_FACTOR_A
, 1);
366 OUT_RINGf(chan
, mat
[MAT_ATTRIB_FRONT_DIFFUSE
][3]);
368 foreach(l
, &ctx
->Light
.EnabledList
) {
369 const int i
= l
- ctx
->Light
.Light
;
370 float *c_light
= (USE_COLOR_MATERIAL(DIFFUSE
) ?
374 BEGIN_RING(chan
, celsius
, NV10TCL_LIGHT_DIFFUSE_R(i
), 3);
375 OUT_RINGp(chan
, c_light
, 3);
380 nv10_emit_material_specular(GLcontext
*ctx
, int emit
)
382 struct nouveau_channel
*chan
= context_chan(ctx
);
383 struct nouveau_grobj
*celsius
= context_eng3d(ctx
);
386 foreach(l
, &ctx
->Light
.EnabledList
) {
387 const int i
= l
- ctx
->Light
.Light
;
388 float *c_light
= (USE_COLOR_MATERIAL(SPECULAR
) ?
392 BEGIN_RING(chan
, celsius
, NV10TCL_LIGHT_SPECULAR_R(i
), 3);
393 OUT_RINGp(chan
, c_light
, 3);
397 static const float nv10_shininess_param
[6][16] = {
398 { 0.70, 0.00, 0.06, 0.06, 0.05, 0.04, 0.02, 0.00,
399 -0.06, -0.13, -0.24, -0.36, -0.51, -0.66, -0.82, -1.00 },
400 { 0.01, 1.00, -2.29, -2.77, -2.96, -3.06, -3.12, -3.18,
401 -3.24, -3.29, -3.36, -3.43, -3.51, -3.75, -4.33, -5.11 },
402 { 0.02, 0.00, 2.28, 2.75, 2.94, 3.04, 3.1, 3.15,
403 3.18, 3.22, 3.27, 3.32, 3.39, 3.48, 3.84, 5.11 },
404 { 0.70, 0.00, 0.05, 0.06, 0.06, 0.06, 0.05, 0.04,
405 0.02, 0.01, -0.03, -0.12, -0.25, -0.43, -0.68, -0.99 },
406 { 0.01, 1.00, -1.61, -2.35, -2.67, -2.84, -2.96, -3.05,
407 -3.08, -3.14, -3.2, -3.26, -3.32, -3.42, -3.54, -4.21 },
408 { 0.01, 0.00, 2.25, 2.73, 2.92, 3.03, 3.09, 3.15,
409 3.16, 3.21, 3.25, 3.29, 3.35, 3.43, 3.56, 4.22 },
413 nv10_get_shininess_coeff(float s
, float k
[6])
417 for (i
= 0; i
< 6; i
++)
418 k
[i
] = get_shine(nv10_shininess_param
[i
], s
);
422 nv10_emit_material_shininess(GLcontext
*ctx
, int emit
)
424 struct nouveau_channel
*chan
= context_chan(ctx
);
425 struct nouveau_grobj
*celsius
= context_eng3d(ctx
);
426 float (*mat
)[4] = ctx
->Light
.Material
.Attrib
;
429 nv10_get_shininess_coeff(
430 CLAMP(mat
[MAT_ATTRIB_FRONT_SHININESS
][0], 0, 1024),
433 BEGIN_RING(chan
, celsius
, NV10TCL_MATERIAL_SHININESS(0), 6);
434 OUT_RINGp(chan
, k
, 6);
438 nv10_emit_modelview(GLcontext
*ctx
, int emit
)
440 struct nouveau_context
*nctx
= to_nouveau_context(ctx
);
441 struct nouveau_channel
*chan
= context_chan(ctx
);
442 struct nouveau_grobj
*celsius
= context_eng3d(ctx
);
443 GLmatrix
*m
= ctx
->ModelviewMatrixStack
.Top
;
445 if (nctx
->fallback
!= HWTNL
)
448 if (ctx
->Light
._NeedEyeCoords
|| ctx
->Fog
.Enabled
||
449 (ctx
->Texture
._GenFlags
& TEXGEN_NEED_EYE_COORD
)) {
450 BEGIN_RING(chan
, celsius
, NV10TCL_MODELVIEW0_MATRIX(0), 16);
451 OUT_RINGm(chan
, m
->m
);
454 if (ctx
->Light
.Enabled
||
455 (ctx
->Texture
._GenFlags
& TEXGEN_NEED_EYE_COORD
)) {
458 BEGIN_RING(chan
, celsius
,
459 NV10TCL_INVERSE_MODELVIEW0_MATRIX(0), 12);
460 for (i
= 0; i
< 3; i
++)
461 for (j
= 0; j
< 4; j
++)
462 OUT_RINGf(chan
, m
->inv
[4*i
+ j
]);
467 nv10_emit_point_parameter(GLcontext
*ctx
, int emit
)
472 nv10_emit_projection(GLcontext
*ctx
, int emit
)
474 struct nouveau_context
*nctx
= to_nouveau_context(ctx
);
475 struct nouveau_channel
*chan
= context_chan(ctx
);
476 struct nouveau_grobj
*celsius
= context_eng3d(ctx
);
479 _math_matrix_ctr(&m
);
480 get_viewport_scale(ctx
, m
.m
);
482 if (nv10_use_viewport_zclear(ctx
))
485 if (nctx
->fallback
== HWTNL
)
486 _math_matrix_mul_matrix(&m
, &m
, &ctx
->_ModelProjectMatrix
);
488 BEGIN_RING(chan
, celsius
, NV10TCL_PROJECTION_MATRIX(0), 16);
489 OUT_RINGm(chan
, m
.m
);
491 _math_matrix_dtr(&m
);