1 /*
2 * Copyright (C) 2009-2010 Francisco Jerez.
3 * All Rights Reserved.
4 *
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:
12 *
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.
16 *
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.
24 *
25 */
26
27 #include "nouveau_driver.h"
28 #include "nouveau_context.h"
29 #include "nouveau_gldefs.h"
30 #include "nouveau_util.h"
31 #include "nv10_3d.xml.h"
32 #include "nv10_driver.h"
33
34 void
nv10_emit_clip_plane(struct gl_context * ctx,int emit)35 nv10_emit_clip_plane(struct gl_context *ctx, int emit)
36 {
37 }
38
39 static inline unsigned
get_material_bitmask(unsigned m)40 get_material_bitmask(unsigned m)
41 {
42 unsigned ret = 0;
43
44 if (m & MAT_BIT_FRONT_EMISSION)
45 ret |= NV10_3D_COLOR_MATERIAL_EMISSION;
46 if (m & MAT_BIT_FRONT_AMBIENT)
47 ret |= NV10_3D_COLOR_MATERIAL_AMBIENT;
48 if (m & MAT_BIT_FRONT_DIFFUSE)
49 ret |= NV10_3D_COLOR_MATERIAL_DIFFUSE;
50 if (m & MAT_BIT_FRONT_SPECULAR)
51 ret |= NV10_3D_COLOR_MATERIAL_SPECULAR;
52
53 return ret;
54 }
55
56 void
nv10_emit_color_material(struct gl_context * ctx,int emit)57 nv10_emit_color_material(struct gl_context *ctx, int emit)
58 {
59 struct nouveau_pushbuf *push = context_push(ctx);
60 unsigned mask = get_material_bitmask(ctx->Light._ColorMaterialBitmask);
61
62 BEGIN_NV04(push, NV10_3D(COLOR_MATERIAL), 1);
63 PUSH_DATA (push, ctx->Light.ColorMaterialEnabled ? mask : 0);
64 }
65
66 static unsigned
get_fog_mode(unsigned mode)67 get_fog_mode(unsigned mode)
68 {
69 switch (mode) {
70 case GL_LINEAR:
71 return NV10_3D_FOG_MODE_LINEAR;
72 case GL_EXP:
73 return NV10_3D_FOG_MODE_EXP;
74 case GL_EXP2:
75 return NV10_3D_FOG_MODE_EXP2;
76 default:
77 assert(0);
78 }
79 }
80
81 static unsigned
get_fog_source(unsigned source,unsigned distance_mode)82 get_fog_source(unsigned source, unsigned distance_mode)
83 {
84 switch (source) {
85 case GL_FOG_COORDINATE_EXT:
86 return NV10_3D_FOG_COORD_FOG;
87 case GL_FRAGMENT_DEPTH_EXT:
88 switch (distance_mode) {
89 case GL_EYE_PLANE_ABSOLUTE_NV:
90 return NV10_3D_FOG_COORD_DIST_ORTHOGONAL_ABS;
91 case GL_EYE_PLANE:
92 return NV10_3D_FOG_COORD_DIST_ORTHOGONAL;
93 case GL_EYE_RADIAL_NV:
94 return NV10_3D_FOG_COORD_DIST_RADIAL;
95 default:
96 assert(0);
97 }
98 default:
99 assert(0);
100 }
101 }
102
103 void
nv10_get_fog_coeff(struct gl_context * ctx,float k[3])104 nv10_get_fog_coeff(struct gl_context *ctx, float k[3])
105 {
106 struct gl_fog_attrib *f = &ctx->Fog;
107
108 switch (f->Mode) {
109 case GL_LINEAR:
110 k[0] = 2 + f->Start / (f->End - f->Start);
111 k[1] = -1 / (f->End - f->Start);
112 break;
113
114 case GL_EXP:
115 k[0] = 1.5;
116 k[1] = -0.09 * f->Density;
117 break;
118
119 case GL_EXP2:
120 k[0] = 1.5;
121 k[1] = -0.21 * f->Density;
122 break;
123
124 default:
125 assert(0);
126 }
127
128 k[2] = 0;
129 }
130
131 void
nv10_emit_fog(struct gl_context * ctx,int emit)132 nv10_emit_fog(struct gl_context *ctx, int emit)
133 {
134 struct nouveau_context *nctx = to_nouveau_context(ctx);
135 struct nouveau_pushbuf *push = context_push(ctx);
136 struct gl_fog_attrib *f = &ctx->Fog;
137 unsigned source = nctx->fallback == HWTNL ?
138 f->FogCoordinateSource : GL_FOG_COORDINATE_EXT;
139 float k[3];
140
141 nv10_get_fog_coeff(ctx, k);
142
143 BEGIN_NV04(push, NV10_3D(FOG_MODE), 4);
144 PUSH_DATA (push, get_fog_mode(f->Mode));
145 PUSH_DATA (push, get_fog_source(source, f->FogDistanceMode));
146 PUSH_DATAb(push, f->Enabled);
147 PUSH_DATA (push, pack_rgba_f(MESA_FORMAT_RGBA8888_REV, f->Color));
148
149 BEGIN_NV04(push, NV10_3D(FOG_COEFF(0)), 3);
150 PUSH_DATAp(push, k, 3);
151
152 context_dirty(ctx, FRAG);
153 }
154
155 static inline unsigned
get_light_mode(struct gl_light * l)156 get_light_mode(struct gl_light *l)
157 {
158 if (l->Enabled) {
159 if (l->_Flags & LIGHT_SPOT)
160 return NV10_3D_ENABLED_LIGHTS_0_DIRECTIONAL;
161 else if (l->_Flags & LIGHT_POSITIONAL)
162 return NV10_3D_ENABLED_LIGHTS_0_POSITIONAL;
163 else
164 return NV10_3D_ENABLED_LIGHTS_0_NONPOSITIONAL;
165 } else {
166 return NV10_3D_ENABLED_LIGHTS_0_DISABLED;
167 }
168 }
169
170 void
nv10_emit_light_enable(struct gl_context * ctx,int emit)171 nv10_emit_light_enable(struct gl_context *ctx, int emit)
172 {
173 struct nouveau_context *nctx = to_nouveau_context(ctx);
174 struct nouveau_pushbuf *push = context_push(ctx);
175 uint32_t en_lights = 0;
176 int i;
177
178 if (nctx->fallback != HWTNL) {
179 BEGIN_NV04(push, NV10_3D(LIGHTING_ENABLE), 1);
180 PUSH_DATA (push, 0);
181 return;
182 }
183
184 for (i = 0; i < MAX_LIGHTS; i++)
185 en_lights |= get_light_mode(&ctx->Light.Light[i]) << 2 * i;
186
187 BEGIN_NV04(push, NV10_3D(ENABLED_LIGHTS), 1);
188 PUSH_DATA (push, en_lights);
189 BEGIN_NV04(push, NV10_3D(LIGHTING_ENABLE), 1);
190 PUSH_DATAb(push, ctx->Light.Enabled);
191 BEGIN_NV04(push, NV10_3D(NORMALIZE_ENABLE), 1);
192 PUSH_DATAb(push, ctx->Transform.Normalize);
193 }
194
195 void
nv10_emit_light_model(struct gl_context * ctx,int emit)196 nv10_emit_light_model(struct gl_context *ctx, int emit)
197 {
198 struct nouveau_pushbuf *push = context_push(ctx);
199 struct gl_lightmodel *m = &ctx->Light.Model;
200
201 BEGIN_NV04(push, NV10_3D(SEPARATE_SPECULAR_ENABLE), 1);
202 PUSH_DATAb(push, m->ColorControl == GL_SEPARATE_SPECULAR_COLOR);
203
204 BEGIN_NV04(push, NV10_3D(LIGHT_MODEL), 1);
205 PUSH_DATA (push, ((m->LocalViewer ?
206 NV10_3D_LIGHT_MODEL_LOCAL_VIEWER : 0) |
207 (_mesa_need_secondary_color(ctx) ?
208 NV10_3D_LIGHT_MODEL_SEPARATE_SPECULAR : 0) |
209 (!ctx->Light.Enabled && ctx->Fog.ColorSumEnabled ?
210 NV10_3D_LIGHT_MODEL_VERTEX_SPECULAR : 0)));
211 }
212
213 static float
get_shine(const float p[],float x)214 get_shine(const float p[], float x)
215 {
216 const int n = 15;
217 const float *y = &p[1];
218 float f = (n - 1) * (1 - 1 / (1 + p[0] * x))
219 / (1 - 1 / (1 + p[0] * 1024));
220 int i = f;
221
222 /* Linear interpolation in f-space (Faster and somewhat more
223 * accurate than x-space). */
224 if (x == 0)
225 return y[0];
226 else if (i > n - 2)
227 return y[n - 1];
228 else
229 return y[i] + (y[i + 1] - y[i]) * (f - i);
230 }
231
232 static const float nv10_spot_params[2][16] = {
233 { 0.02, -3.80e-05, -1.77, -2.41, -2.71, -2.88, -2.98, -3.06,
234 -3.11, -3.17, -3.23, -3.28, -3.37, -3.47, -3.83, -5.11 },
235 { 0.02, -0.01, 1.77, 2.39, 2.70, 2.87, 2.98, 3.06,
236 3.10, 3.16, 3.23, 3.27, 3.37, 3.47, 3.83, 5.11 },
237 };
238
239 void
nv10_get_spot_coeff(struct gl_light * l,float k[7])240 nv10_get_spot_coeff(struct gl_light *l, float k[7])
241 {
242 float e = l->SpotExponent;
243 float a0, b0, a1, a2, b2, a3;
244
245 if (e > 0)
246 a0 = -1 - 5.36e-3 / sqrt(e);
247 else
248 a0 = -1;
249 b0 = 1 / (1 + 0.273 * e);
250
251 a1 = get_shine(nv10_spot_params[0], e);
252
253 a2 = get_shine(nv10_spot_params[1], e);
254 b2 = 1 / (1 + 0.273 * e);
255
256 a3 = 0.9 + 0.278 * e;
257
258 if (l->SpotCutoff > 0) {
259 float cutoff = MAX2(a3, 1 / (1 - l->_CosCutoff));
260
261 k[0] = MAX2(0, a0 + b0 * cutoff);
262 k[1] = a1;
263 k[2] = a2 + b2 * cutoff;
264 k[3] = - cutoff * l->_NormSpotDirection[0];
265 k[4] = - cutoff * l->_NormSpotDirection[1];
266 k[5] = - cutoff * l->_NormSpotDirection[2];
267 k[6] = 1 - cutoff;
268
269 } else {
270 k[0] = b0;
271 k[1] = a1;
272 k[2] = a2 + b2;
273 k[3] = - l->_NormSpotDirection[0];
274 k[4] = - l->_NormSpotDirection[1];
275 k[5] = - l->_NormSpotDirection[2];
276 k[6] = -1;
277 }
278 }
279
280 void
nv10_emit_light_source(struct gl_context * ctx,int emit)281 nv10_emit_light_source(struct gl_context *ctx, int emit)
282 {
283 const int i = emit - NOUVEAU_STATE_LIGHT_SOURCE0;
284 struct nouveau_pushbuf *push = context_push(ctx);
285 struct gl_light *l = &ctx->Light.Light[i];
286
287 if (l->_Flags & LIGHT_POSITIONAL) {
288 BEGIN_NV04(push, NV10_3D(LIGHT_POSITION_X(i)), 3);
289 PUSH_DATAp(push, l->_Position, 3);
290
291 BEGIN_NV04(push, NV10_3D(LIGHT_ATTENUATION_CONSTANT(i)), 3);
292 PUSH_DATAf(push, l->ConstantAttenuation);
293 PUSH_DATAf(push, l->LinearAttenuation);
294 PUSH_DATAf(push, l->QuadraticAttenuation);
295
296 } else {
297 BEGIN_NV04(push, NV10_3D(LIGHT_DIRECTION_X(i)), 3);
298 PUSH_DATAp(push, l->_VP_inf_norm, 3);
299
300 BEGIN_NV04(push, NV10_3D(LIGHT_HALF_VECTOR_X(i)), 3);
301 PUSH_DATAp(push, l->_h_inf_norm, 3);
302 }
303
304 if (l->_Flags & LIGHT_SPOT) {
305 float k[7];
306
307 nv10_get_spot_coeff(l, k);
308
309 BEGIN_NV04(push, NV10_3D(LIGHT_SPOT_CUTOFF(i, 0)), 7);
310 PUSH_DATAp(push, k, 7);
311 }
312 }
313
314 #define USE_COLOR_MATERIAL(attr) \
315 (ctx->Light.ColorMaterialEnabled && \
316 ctx->Light._ColorMaterialBitmask & (1 << MAT_ATTRIB_FRONT_##attr))
317
318 void
nv10_emit_material_ambient(struct gl_context * ctx,int emit)319 nv10_emit_material_ambient(struct gl_context *ctx, int emit)
320 {
321 struct nouveau_pushbuf *push = context_push(ctx);
322 float (*mat)[4] = ctx->Light.Material.Attrib;
323 float c_scene[3], c_factor[3];
324 struct gl_light *l;
325
326 if (USE_COLOR_MATERIAL(AMBIENT)) {
327 COPY_3V(c_scene, ctx->Light.Model.Ambient);
328 COPY_3V(c_factor, mat[MAT_ATTRIB_FRONT_EMISSION]);
329
330 } else if (USE_COLOR_MATERIAL(EMISSION)) {
331 SCALE_3V(c_scene, mat[MAT_ATTRIB_FRONT_AMBIENT],
332 ctx->Light.Model.Ambient);
333 ZERO_3V(c_factor);
334
335 } else {
336 COPY_3V(c_scene, ctx->Light._BaseColor[0]);
337 ZERO_3V(c_factor);
338 }
339
340 BEGIN_NV04(push, NV10_3D(LIGHT_MODEL_AMBIENT_R), 3);
341 PUSH_DATAp(push, c_scene, 3);
342
343 if (ctx->Light.ColorMaterialEnabled) {
344 BEGIN_NV04(push, NV10_3D(MATERIAL_FACTOR_R), 3);
345 PUSH_DATAp(push, c_factor, 3);
346 }
347
348 foreach(l, &ctx->Light.EnabledList) {
349 const int i = l - ctx->Light.Light;
350 float *c_light = (USE_COLOR_MATERIAL(AMBIENT) ?
351 l->Ambient :
352 l->_MatAmbient[0]);
353
354 BEGIN_NV04(push, NV10_3D(LIGHT_AMBIENT_R(i)), 3);
355 PUSH_DATAp(push, c_light, 3);
356 }
357 }
358
359 void
nv10_emit_material_diffuse(struct gl_context * ctx,int emit)360 nv10_emit_material_diffuse(struct gl_context *ctx, int emit)
361 {
362 struct nouveau_pushbuf *push = context_push(ctx);
363 GLfloat (*mat)[4] = ctx->Light.Material.Attrib;
364 struct gl_light *l;
365
366 BEGIN_NV04(push, NV10_3D(MATERIAL_FACTOR_A), 1);
367 PUSH_DATAf(push, mat[MAT_ATTRIB_FRONT_DIFFUSE][3]);
368
369 foreach(l, &ctx->Light.EnabledList) {
370 const int i = l - ctx->Light.Light;
371 float *c_light = (USE_COLOR_MATERIAL(DIFFUSE) ?
372 l->Diffuse :
373 l->_MatDiffuse[0]);
374
375 BEGIN_NV04(push, NV10_3D(LIGHT_DIFFUSE_R(i)), 3);
376 PUSH_DATAp(push, c_light, 3);
377 }
378 }
379
380 void
nv10_emit_material_specular(struct gl_context * ctx,int emit)381 nv10_emit_material_specular(struct gl_context *ctx, int emit)
382 {
383 struct nouveau_pushbuf *push = context_push(ctx);
384 struct gl_light *l;
385
386 foreach(l, &ctx->Light.EnabledList) {
387 const int i = l - ctx->Light.Light;
388 float *c_light = (USE_COLOR_MATERIAL(SPECULAR) ?
389 l->Specular :
390 l->_MatSpecular[0]);
391
392 BEGIN_NV04(push, NV10_3D(LIGHT_SPECULAR_R(i)), 3);
393 PUSH_DATAp(push, c_light, 3);
394 }
395 }
396
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 },
410 };
411
412 void
nv10_get_shininess_coeff(float s,float k[6])413 nv10_get_shininess_coeff(float s, float k[6])
414 {
415 int i;
416
417 for (i = 0; i < 6; i++)
418 k[i] = get_shine(nv10_shininess_param[i], s);
419 }
420
421 void
nv10_emit_material_shininess(struct gl_context * ctx,int emit)422 nv10_emit_material_shininess(struct gl_context *ctx, int emit)
423 {
424 struct nouveau_pushbuf *push = context_push(ctx);
425 float (*mat)[4] = ctx->Light.Material.Attrib;
426 float k[6];
427
428 nv10_get_shininess_coeff(
429 CLAMP(mat[MAT_ATTRIB_FRONT_SHININESS][0], 0, 1024),
430 k);
431
432 BEGIN_NV04(push, NV10_3D(MATERIAL_SHININESS(0)), 6);
433 PUSH_DATAp(push, k, 6);
434 }
435
436 void
nv10_emit_modelview(struct gl_context * ctx,int emit)437 nv10_emit_modelview(struct gl_context *ctx, int emit)
438 {
439 struct nouveau_context *nctx = to_nouveau_context(ctx);
440 struct nouveau_pushbuf *push = context_push(ctx);
441 GLmatrix *m = ctx->ModelviewMatrixStack.Top;
442
443 if (nctx->fallback != HWTNL)
444 return;
445
446 if (ctx->Light._NeedEyeCoords || ctx->Fog.Enabled ||
447 (ctx->Texture._GenFlags & TEXGEN_NEED_EYE_COORD)) {
448 BEGIN_NV04(push, NV10_3D(MODELVIEW_MATRIX(0, 0)), 16);
449 PUSH_DATAm(push, m->m);
450 }
451
452 if (ctx->Light.Enabled ||
453 (ctx->Texture._GenFlags & TEXGEN_NEED_EYE_COORD)) {
454 int i, j;
455
456 BEGIN_NV04(push, NV10_3D(INVERSE_MODELVIEW_MATRIX(0, 0)), 12);
457 for (i = 0; i < 3; i++)
458 for (j = 0; j < 4; j++)
459 PUSH_DATAf(push, m->inv[4*i + j]);
460 }
461 }
462
463 void
nv10_emit_point_parameter(struct gl_context * ctx,int emit)464 nv10_emit_point_parameter(struct gl_context *ctx, int emit)
465 {
466 }
467
468 void
nv10_emit_projection(struct gl_context * ctx,int emit)469 nv10_emit_projection(struct gl_context *ctx, int emit)
470 {
471 struct nouveau_context *nctx = to_nouveau_context(ctx);
472 struct nouveau_pushbuf *push = context_push(ctx);
473 GLmatrix m;
474
475 _math_matrix_ctr(&m);
476 get_viewport_scale(ctx, m.m);
477
478 if (nv10_use_viewport_zclear(ctx))
479 m.m[MAT_SZ] /= 8;
480
481 if (nctx->fallback == HWTNL)
482 _math_matrix_mul_matrix(&m, &m, &ctx->_ModelProjectMatrix);
483
484 BEGIN_NV04(push, NV10_3D(PROJECTION_MATRIX(0)), 16);
485 PUSH_DATAm(push, m.m);
486
487 _math_matrix_dtr(&m);
488 }
489