1/*
2 * Copyright 2012 Red Hat Inc.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
17 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
21 *
22 * Authors: Ben Skeggs
23 *
24 */
25
26#include "util/format/u_format.h"
27#include "util/u_helpers.h"
28#include "util/u_inlines.h"
29
30#include "nouveau_gldefs.h"
31#include "nv_object.xml.h"
32#include "nv30/nv30-40_3d.xml.h"
33#include "nv30/nv30_context.h"
34#include "nv30/nv30_winsys.h"
35
36#define NV40_3D_MRT_BLEND_ENABLE 0x0000036c
37
38static void *
39nv30_blend_state_create(struct pipe_context *pipe,
40                        const struct pipe_blend_state *cso)
41{
42   struct nouveau_object *eng3d = nv30_context(pipe)->screen->eng3d;
43   struct nv30_blend_stateobj *so;
44   uint32_t blend[2], cmask[2];
45   int i;
46
47   so = CALLOC_STRUCT(nv30_blend_stateobj);
48   if (!so)
49      return NULL;
50   so->pipe = *cso;
51
52   if (cso->logicop_enable) {
53      SB_MTHD30(so, COLOR_LOGIC_OP_ENABLE, 2);
54      SB_DATA  (so, 1);
55      SB_DATA  (so, nvgl_logicop_func(cso->logicop_func));
56   } else {
57      SB_MTHD30(so, COLOR_LOGIC_OP_ENABLE, 1);
58      SB_DATA  (so, 0);
59   }
60
61   SB_MTHD30(so, DITHER_ENABLE, 1);
62   SB_DATA  (so, cso->dither);
63
64   blend[0] = cso->rt[0].blend_enable;
65   cmask[0] = !!(cso->rt[0].colormask & PIPE_MASK_A) << 24 |
66              !!(cso->rt[0].colormask & PIPE_MASK_R) << 16 |
67              !!(cso->rt[0].colormask & PIPE_MASK_G) <<  8 |
68              !!(cso->rt[0].colormask & PIPE_MASK_B);
69   if (cso->independent_blend_enable) {
70      blend[1] = 0;
71      cmask[1] = 0;
72      for (i = 1; i < 4; i++) {
73         blend[1] |= cso->rt[i].blend_enable << i;
74         cmask[1] |= !!(cso->rt[i].colormask & PIPE_MASK_A) << (0 + (i * 4)) |
75                     !!(cso->rt[i].colormask & PIPE_MASK_R) << (1 + (i * 4)) |
76                     !!(cso->rt[i].colormask & PIPE_MASK_G) << (2 + (i * 4)) |
77                     !!(cso->rt[i].colormask & PIPE_MASK_B) << (3 + (i * 4));
78      }
79   } else {
80      blend[1]  = 0x0000000e *   (blend[0] & 0x00000001);
81      cmask[1]  = 0x00001110 * !!(cmask[0] & 0x01000000);
82      cmask[1] |= 0x00002220 * !!(cmask[0] & 0x00010000);
83      cmask[1] |= 0x00004440 * !!(cmask[0] & 0x00000100);
84      cmask[1] |= 0x00008880 * !!(cmask[0] & 0x00000001);
85   }
86
87   if (eng3d->oclass >= NV40_3D_CLASS) {
88      SB_MTHD40(so, MRT_BLEND_ENABLE, 2);
89      SB_DATA  (so, blend[1]);
90      SB_DATA  (so, cmask[1]);
91   }
92
93   if (blend[0] || blend[1]) {
94      SB_MTHD30(so, BLEND_FUNC_ENABLE, 3);
95      SB_DATA  (so, blend[0]);
96      SB_DATA  (so, (nvgl_blend_func(cso->rt[0].alpha_src_factor) << 16) |
97                     nvgl_blend_func(cso->rt[0].rgb_src_factor));
98      SB_DATA  (so, (nvgl_blend_func(cso->rt[0].alpha_dst_factor) << 16) |
99                     nvgl_blend_func(cso->rt[0].rgb_dst_factor));
100      if (eng3d->oclass < NV40_3D_CLASS) {
101         SB_MTHD30(so, BLEND_EQUATION, 1);
102         SB_DATA  (so, nvgl_blend_eqn(cso->rt[0].rgb_func));
103      } else {
104         SB_MTHD40(so, BLEND_EQUATION, 1);
105         SB_DATA  (so, (nvgl_blend_eqn(cso->rt[0].alpha_func) << 16) |
106                        nvgl_blend_eqn(cso->rt[0].rgb_func));
107      }
108   } else {
109      SB_MTHD30(so, BLEND_FUNC_ENABLE, 1);
110      SB_DATA  (so, blend[0]);
111   }
112
113   SB_MTHD30(so, COLOR_MASK, 1);
114   SB_DATA  (so, cmask[0]);
115   return so;
116}
117
118static void
119nv30_blend_state_bind(struct pipe_context *pipe, void *hwcso)
120{
121   struct nv30_context *nv30 = nv30_context(pipe);
122
123   nv30->blend = hwcso;
124   nv30->dirty |= NV30_NEW_BLEND;
125}
126
127static void
128nv30_blend_state_delete(struct pipe_context *pipe, void *hwcso)
129{
130   FREE(hwcso);
131}
132
133static void *
134nv30_rasterizer_state_create(struct pipe_context *pipe,
135                             const struct pipe_rasterizer_state *cso)
136{
137   struct nv30_rasterizer_stateobj *so;
138
139   so = CALLOC_STRUCT(nv30_rasterizer_stateobj);
140   if (!so)
141      return NULL;
142   so->pipe = *cso;
143
144   SB_MTHD30(so, SHADE_MODEL, 1);
145   SB_DATA  (so, cso->flatshade ? NV30_3D_SHADE_MODEL_FLAT :
146                                  NV30_3D_SHADE_MODEL_SMOOTH);
147
148   SB_MTHD30(so, POLYGON_MODE_FRONT, 6);
149   SB_DATA  (so, nvgl_polygon_mode(cso->fill_front));
150   SB_DATA  (so, nvgl_polygon_mode(cso->fill_back));
151   if (cso->cull_face == PIPE_FACE_FRONT_AND_BACK)
152      SB_DATA  (so, NV30_3D_CULL_FACE_FRONT_AND_BACK);
153   else
154   if (cso->cull_face == PIPE_FACE_FRONT)
155      SB_DATA  (so, NV30_3D_CULL_FACE_FRONT);
156   else
157      SB_DATA  (so, NV30_3D_CULL_FACE_BACK);
158   SB_DATA  (so, cso->front_ccw ? NV30_3D_FRONT_FACE_CCW :
159                                  NV30_3D_FRONT_FACE_CW);
160   SB_DATA  (so, cso->poly_smooth);
161   SB_DATA  (so, cso->cull_face != PIPE_FACE_NONE);
162
163   SB_MTHD30(so, POLYGON_OFFSET_POINT_ENABLE, 3);
164   SB_DATA  (so, cso->offset_point);
165   SB_DATA  (so, cso->offset_line);
166   SB_DATA  (so, cso->offset_tri);
167   if (cso->offset_point || cso->offset_line || cso->offset_tri) {
168      SB_MTHD30(so, POLYGON_OFFSET_FACTOR, 2);
169      SB_DATA  (so, fui(cso->offset_scale));
170      SB_DATA  (so, fui(cso->offset_units * 2.0));
171   }
172
173   SB_MTHD30(so, LINE_WIDTH, 2);
174   SB_DATA  (so, (unsigned char)(cso->line_width * 8.0) & 0xff);
175   SB_DATA  (so, cso->line_smooth);
176   SB_MTHD30(so, LINE_STIPPLE_ENABLE, 2);
177   SB_DATA  (so, cso->line_stipple_enable);
178   SB_DATA  (so, (cso->line_stipple_pattern << 16) |
179                  cso->line_stipple_factor);
180
181   SB_MTHD30(so, VERTEX_TWO_SIDE_ENABLE, 1);
182   SB_DATA  (so, cso->light_twoside);
183   SB_MTHD30(so, POLYGON_STIPPLE_ENABLE, 1);
184   SB_DATA  (so, cso->poly_stipple_enable);
185   SB_MTHD30(so, POINT_SIZE, 1);
186   SB_DATA  (so, fui(cso->point_size));
187   SB_MTHD30(so, FLATSHADE_FIRST, 1);
188   SB_DATA  (so, cso->flatshade_first);
189
190   SB_MTHD30(so, DEPTH_CONTROL, 1);
191   SB_DATA  (so, cso->depth_clip_near ? 0x00000001 : 0x00000010);
192   return so;
193}
194
195static void
196nv30_rasterizer_state_bind(struct pipe_context *pipe, void *hwcso)
197{
198   struct nv30_context *nv30 = nv30_context(pipe);
199
200   nv30->rast = hwcso;
201   nv30->dirty |= NV30_NEW_RASTERIZER;
202}
203
204static void
205nv30_rasterizer_state_delete(struct pipe_context *pipe, void *hwcso)
206{
207   FREE(hwcso);
208}
209
210static void *
211nv30_zsa_state_create(struct pipe_context *pipe,
212                      const struct pipe_depth_stencil_alpha_state *cso)
213{
214   struct nouveau_object *eng3d = nv30_context(pipe)->screen->eng3d;
215   struct nv30_zsa_stateobj *so;
216
217   so = CALLOC_STRUCT(nv30_zsa_stateobj);
218   if (!so)
219      return NULL;
220   so->pipe = *cso;
221
222   SB_MTHD30(so, DEPTH_FUNC, 3);
223   SB_DATA  (so, nvgl_comparison_op(cso->depth_func));
224   SB_DATA  (so, cso->depth_writemask);
225   SB_DATA  (so, cso->depth_enabled);
226
227   if (eng3d->oclass == NV35_3D_CLASS || eng3d->oclass >= NV40_3D_CLASS) {
228      SB_MTHD35(so, DEPTH_BOUNDS_TEST_ENABLE, 3);
229      SB_DATA  (so, cso->depth_bounds_test);
230      SB_DATA  (so, fui(cso->depth_bounds_min));
231      SB_DATA  (so, fui(cso->depth_bounds_max));
232   }
233
234   if (cso->stencil[0].enabled) {
235      SB_MTHD30(so, STENCIL_ENABLE(0), 3);
236      SB_DATA  (so, 1);
237      SB_DATA  (so, cso->stencil[0].writemask);
238      SB_DATA  (so, nvgl_comparison_op(cso->stencil[0].func));
239      SB_MTHD30(so, STENCIL_FUNC_MASK(0), 4);
240      SB_DATA  (so, cso->stencil[0].valuemask);
241      SB_DATA  (so, nvgl_stencil_op(cso->stencil[0].fail_op));
242      SB_DATA  (so, nvgl_stencil_op(cso->stencil[0].zfail_op));
243      SB_DATA  (so, nvgl_stencil_op(cso->stencil[0].zpass_op));
244   } else {
245      SB_MTHD30(so, STENCIL_ENABLE(0), 2);
246      SB_DATA  (so, 0);
247      SB_DATA  (so, 0x000000ff);
248   }
249
250   if (cso->stencil[1].enabled) {
251      SB_MTHD30(so, STENCIL_ENABLE(1), 3);
252      SB_DATA  (so, 1);
253      SB_DATA  (so, cso->stencil[1].writemask);
254      SB_DATA  (so, nvgl_comparison_op(cso->stencil[1].func));
255      SB_MTHD30(so, STENCIL_FUNC_MASK(1), 4);
256      SB_DATA  (so, cso->stencil[1].valuemask);
257      SB_DATA  (so, nvgl_stencil_op(cso->stencil[1].fail_op));
258      SB_DATA  (so, nvgl_stencil_op(cso->stencil[1].zfail_op));
259      SB_DATA  (so, nvgl_stencil_op(cso->stencil[1].zpass_op));
260   } else {
261      SB_MTHD30(so, STENCIL_ENABLE(1), 1);
262      SB_DATA  (so, 0);
263   }
264
265   SB_MTHD30(so, ALPHA_FUNC_ENABLE, 3);
266   SB_DATA  (so, cso->alpha_enabled ? 1 : 0);
267   SB_DATA  (so, nvgl_comparison_op(cso->alpha_func));
268   SB_DATA  (so, float_to_ubyte(cso->alpha_ref_value));
269
270   return so;
271}
272
273static void
274nv30_zsa_state_bind(struct pipe_context *pipe, void *hwcso)
275{
276   struct nv30_context *nv30 = nv30_context(pipe);
277
278   nv30->zsa = hwcso;
279   nv30->dirty |= NV30_NEW_ZSA;
280}
281
282static void
283nv30_zsa_state_delete(struct pipe_context *pipe, void *hwcso)
284{
285   FREE(hwcso);
286}
287
288static void
289nv30_set_blend_color(struct pipe_context *pipe,
290                     const struct pipe_blend_color *bcol)
291{
292    struct nv30_context *nv30 = nv30_context(pipe);
293
294    nv30->blend_colour = *bcol;
295    nv30->dirty |= NV30_NEW_BLEND_COLOUR;
296}
297
298static void
299nv30_set_stencil_ref(struct pipe_context *pipe,
300                     const struct pipe_stencil_ref sr)
301{
302    struct nv30_context *nv30 = nv30_context(pipe);
303
304    nv30->stencil_ref = sr;
305    nv30->dirty |= NV30_NEW_STENCIL_REF;
306}
307
308static void
309nv30_set_clip_state(struct pipe_context *pipe,
310                    const struct pipe_clip_state *clip)
311{
312    struct nv30_context *nv30 = nv30_context(pipe);
313
314    memcpy(nv30->clip.ucp, clip->ucp, sizeof(clip->ucp));
315
316    nv30->dirty |= NV30_NEW_CLIP;
317}
318
319static void
320nv30_set_sample_mask(struct pipe_context *pipe, unsigned sample_mask)
321{
322    struct nv30_context *nv30 = nv30_context(pipe);
323
324    nv30->sample_mask = sample_mask;
325    nv30->dirty |= NV30_NEW_SAMPLE_MASK;
326}
327
328static void
329nv30_set_constant_buffer(struct pipe_context *pipe,
330                         enum pipe_shader_type shader, uint index,
331                         bool pass_reference,
332                         const struct pipe_constant_buffer *cb)
333{
334   struct nv30_context *nv30 = nv30_context(pipe);
335   struct pipe_resource *buf = cb ? cb->buffer : NULL;
336   unsigned size;
337
338   if (cb && cb->user_buffer) {
339      buf = nouveau_user_buffer_create(pipe->screen, (void*)cb->user_buffer,
340                                       cb->buffer_size,
341                                       PIPE_BIND_CONSTANT_BUFFER);
342   }
343
344   size = 0;
345   if (buf)
346      size = buf->width0 / (4 * sizeof(float));
347
348   if (shader == PIPE_SHADER_VERTEX) {
349      if (pass_reference) {
350         pipe_resource_reference(&nv30->vertprog.constbuf, NULL);
351         nv30->vertprog.constbuf = buf;
352      } else {
353         pipe_resource_reference(&nv30->vertprog.constbuf, buf);
354      }
355      nv30->vertprog.constbuf_nr = size;
356      nv30->dirty |= NV30_NEW_VERTCONST;
357   } else
358   if (shader == PIPE_SHADER_FRAGMENT) {
359      if (pass_reference) {
360         pipe_resource_reference(&nv30->fragprog.constbuf, NULL);
361         nv30->fragprog.constbuf = buf;
362      } else {
363         pipe_resource_reference(&nv30->fragprog.constbuf, buf);
364      }
365      nv30->fragprog.constbuf_nr = size;
366      nv30->dirty |= NV30_NEW_FRAGCONST;
367   }
368
369   if (cb && cb->user_buffer) {
370      pipe_resource_reference(&buf, NULL);
371   }
372}
373
374static void
375nv30_set_framebuffer_state(struct pipe_context *pipe,
376                           const struct pipe_framebuffer_state *fb)
377{
378    struct nv30_context *nv30 = nv30_context(pipe);
379
380    nouveau_bufctx_reset(nv30->bufctx, BUFCTX_FB);
381
382    nv30->framebuffer = *fb;
383    nv30->dirty |= NV30_NEW_FRAMEBUFFER;
384
385   /* Hardware can't handle different swizzled-ness or different blocksizes
386    * for zs and cbufs. If both are supplied and something doesn't match,
387    * blank out the zs for now so that at least *some* rendering can occur.
388    */
389    if (fb->nr_cbufs > 0 && fb->zsbuf) {
390       struct nv30_miptree *color_mt = nv30_miptree(fb->cbufs[0]->texture);
391       struct nv30_miptree *zeta_mt = nv30_miptree(fb->zsbuf->texture);
392
393       if (color_mt->swizzled != zeta_mt->swizzled ||
394           (color_mt->swizzled &&
395            (util_format_get_blocksize(fb->zsbuf->format) > 2) !=
396            (util_format_get_blocksize(fb->cbufs[0]->format) > 2))) {
397          nv30->framebuffer.zsbuf = NULL;
398          debug_printf("Mismatched color and zeta formats, ignoring zeta.\n");
399       }
400    }
401}
402
403static void
404nv30_set_polygon_stipple(struct pipe_context *pipe,
405                         const struct pipe_poly_stipple *stipple)
406{
407    struct nv30_context *nv30 = nv30_context(pipe);
408
409    nv30->stipple = *stipple;
410    nv30->dirty |= NV30_NEW_STIPPLE;
411}
412
413static void
414nv30_set_scissor_states(struct pipe_context *pipe,
415                        unsigned start_slot,
416                        unsigned num_viewports,
417                        const struct pipe_scissor_state *scissor)
418{
419    struct nv30_context *nv30 = nv30_context(pipe);
420
421    nv30->scissor = *scissor;
422    nv30->dirty |= NV30_NEW_SCISSOR;
423}
424
425static void
426nv30_set_viewport_states(struct pipe_context *pipe,
427                         unsigned start_slot,
428                         unsigned num_viewports,
429                         const struct pipe_viewport_state *vpt)
430{
431    struct nv30_context *nv30 = nv30_context(pipe);
432
433    nv30->viewport = *vpt;
434    nv30->dirty |= NV30_NEW_VIEWPORT;
435}
436
437static void
438nv30_set_vertex_buffers(struct pipe_context *pipe,
439                        unsigned start_slot, unsigned count,
440                        unsigned unbind_num_trailing_slots,
441                        bool take_ownership,
442                        const struct pipe_vertex_buffer *vb)
443{
444    struct nv30_context *nv30 = nv30_context(pipe);
445
446    nouveau_bufctx_reset(nv30->bufctx, BUFCTX_VTXBUF);
447
448    util_set_vertex_buffers_count(nv30->vtxbuf, &nv30->num_vtxbufs,
449                                  vb, start_slot, count,
450                                  unbind_num_trailing_slots,
451                                  take_ownership);
452
453    nv30->dirty |= NV30_NEW_ARRAYS;
454}
455
456void
457nv30_state_init(struct pipe_context *pipe)
458{
459   pipe->create_blend_state = nv30_blend_state_create;
460   pipe->bind_blend_state = nv30_blend_state_bind;
461   pipe->delete_blend_state = nv30_blend_state_delete;
462
463   pipe->create_rasterizer_state = nv30_rasterizer_state_create;
464   pipe->bind_rasterizer_state = nv30_rasterizer_state_bind;
465   pipe->delete_rasterizer_state = nv30_rasterizer_state_delete;
466
467   pipe->create_depth_stencil_alpha_state = nv30_zsa_state_create;
468   pipe->bind_depth_stencil_alpha_state = nv30_zsa_state_bind;
469   pipe->delete_depth_stencil_alpha_state = nv30_zsa_state_delete;
470
471   pipe->set_blend_color = nv30_set_blend_color;
472   pipe->set_stencil_ref = nv30_set_stencil_ref;
473   pipe->set_clip_state = nv30_set_clip_state;
474   pipe->set_sample_mask = nv30_set_sample_mask;
475   pipe->set_constant_buffer = nv30_set_constant_buffer;
476   pipe->set_framebuffer_state = nv30_set_framebuffer_state;
477   pipe->set_polygon_stipple = nv30_set_polygon_stipple;
478   pipe->set_scissor_states = nv30_set_scissor_states;
479   pipe->set_viewport_states = nv30_set_viewport_states;
480
481   pipe->set_vertex_buffers = nv30_set_vertex_buffers;
482}
483