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 <stdbool.h>
28 #include <stdio.h>
29 #include "nouveau_driver.h"
30 #include "nouveau_context.h"
31 #include "nouveau_bufferobj.h"
32 #include "nouveau_fbo.h"
33 #include "nv_object.xml.h"
34
35 #include "main/api_exec.h"
36 #include "main/dd.h"
37 #include "main/framebuffer.h"
38 #include "main/fbobject.h"
39 #include "main/light.h"
40 #include "main/state.h"
41 #include "main/version.h"
42 #include "main/vtxfmt.h"
43 #include "drivers/common/meta.h"
44 #include "drivers/common/driverfuncs.h"
45 #include "swrast/swrast.h"
46 #include "swrast/s_context.h"
47 #include "vbo/vbo.h"
48 #include "tnl/tnl.h"
49 #include "tnl/t_context.h"
50
51 GLboolean
nouveau_context_create(gl_api api,const struct gl_config * visual,__DRIcontext * dri_ctx,const struct __DriverContextConfig * ctx_config,unsigned * error,void * share_ctx)52 nouveau_context_create(gl_api api,
53 const struct gl_config *visual, __DRIcontext *dri_ctx,
54 const struct __DriverContextConfig *ctx_config,
55 unsigned *error,
56 void *share_ctx)
57 {
58 __DRIscreen *dri_screen = dri_ctx->driScreenPriv;
59 struct nouveau_screen *screen = dri_screen->driverPrivate;
60 struct nouveau_context *nctx;
61 struct gl_context *ctx;
62
63 if (ctx_config->flags & ~(__DRI_CTX_FLAG_DEBUG | __DRI_CTX_FLAG_NO_ERROR)) {
64 *error = __DRI_CTX_ERROR_UNKNOWN_FLAG;
65 return false;
66 }
67
68 if (ctx_config->attribute_mask) {
69 *error = __DRI_CTX_ERROR_UNKNOWN_ATTRIBUTE;
70 return false;
71 }
72
73 ctx = screen->driver->context_create(screen, api, visual, share_ctx);
74 if (!ctx) {
75 *error = __DRI_CTX_ERROR_NO_MEMORY;
76 return GL_FALSE;
77 }
78
79 driContextSetFlags(ctx, ctx_config->flags);
80
81 nctx = to_nouveau_context(ctx);
82 nctx->dri_context = dri_ctx;
83 dri_ctx->driverPrivate = ctx;
84
85 _mesa_compute_version(ctx);
86 if (ctx->Version < (ctx_config->major_version * 10 +
87 ctx_config->minor_version)) {
88 nouveau_context_destroy(dri_ctx);
89 *error = __DRI_CTX_ERROR_BAD_VERSION;
90 return GL_FALSE;
91 }
92
93 /* Exec table initialization requires the version to be computed */
94 _mesa_initialize_dispatch_tables(ctx);
95 _mesa_initialize_vbo_vtxfmt(ctx);
96
97 if (nouveau_bo_new(context_dev(ctx), NOUVEAU_BO_VRAM, 0, 4096,
98 NULL, &nctx->fence)) {
99 nouveau_context_destroy(dri_ctx);
100 *error = __DRI_CTX_ERROR_NO_MEMORY;
101 return GL_FALSE;
102 }
103
104 *error = __DRI_CTX_ERROR_SUCCESS;
105 return GL_TRUE;
106 }
107
108 GLboolean
nouveau_context_init(struct gl_context * ctx,gl_api api,struct nouveau_screen * screen,const struct gl_config * visual,struct gl_context * share_ctx)109 nouveau_context_init(struct gl_context *ctx, gl_api api,
110 struct nouveau_screen *screen,
111 const struct gl_config *visual, struct gl_context *share_ctx)
112 {
113 struct nouveau_context *nctx = to_nouveau_context(ctx);
114 struct dd_function_table functions;
115 int ret;
116
117 nctx->screen = screen;
118 nctx->fallback = HWTNL;
119
120 /* Initialize the function pointers. */
121 _mesa_init_driver_functions(&functions);
122 _tnl_init_driver_draw_function(&functions);
123 nouveau_driver_functions_init(&functions);
124 nouveau_bufferobj_functions_init(&functions);
125 nouveau_texture_functions_init(&functions);
126 nouveau_fbo_functions_init(&functions);
127
128 /* Initialize the mesa context. */
129 if (!_mesa_initialize_context(ctx, api, visual, share_ctx, &functions))
130 return GL_FALSE;
131
132 nouveau_state_init(ctx);
133 nouveau_scratch_init(ctx);
134 _mesa_meta_init(ctx);
135 _swrast_CreateContext(ctx);
136 _vbo_CreateContext(ctx, true);
137 _tnl_CreateContext(ctx);
138 nouveau_span_functions_init(ctx);
139 _mesa_allow_light_in_model(ctx, GL_FALSE);
140
141 /* Allocate a hardware channel. */
142 ret = nouveau_object_new(&context_dev(ctx)->object, 0xbeef0000,
143 NOUVEAU_FIFO_CHANNEL_CLASS,
144 &(struct nv04_fifo){
145 .vram = 0xbeef0201,
146 .gart = 0xbeef0202
147 }, sizeof(struct nv04_fifo), &nctx->hw.chan);
148 if (ret) {
149 nouveau_error("Error initializing the FIFO.\n");
150 return GL_FALSE;
151 }
152
153 /* Allocate a client (thread data) */
154 ret = nouveau_client_new(context_dev(ctx), &nctx->hw.client);
155 if (ret) {
156 nouveau_error("Error creating thread data\n");
157 return GL_FALSE;
158 }
159
160 /* Allocate a push buffer */
161 ret = nouveau_pushbuf_new(nctx->hw.client, nctx->hw.chan, 4,
162 512 * 1024, true, &nctx->hw.pushbuf);
163 if (ret) {
164 nouveau_error("Error allocating DMA push buffer\n");
165 return GL_FALSE;
166 }
167
168 /* Allocate buffer context */
169 ret = nouveau_bufctx_new(nctx->hw.client, 16, &nctx->hw.bufctx);
170 if (ret) {
171 nouveau_error("Error allocating buffer context\n");
172 return GL_FALSE;
173 }
174
175 nctx->hw.pushbuf->user_priv = nctx->hw.bufctx;
176
177 /* Allocate NULL object */
178 ret = nouveau_object_new(nctx->hw.chan, 0x00000000, NV01_NULL_CLASS,
179 NULL, 0, &nctx->hw.null);
180 if (ret) {
181 nouveau_error("Error allocating NULL object\n");
182 return GL_FALSE;
183 }
184
185 /* Enable any supported extensions. */
186 ctx->Extensions.EXT_blend_color = true;
187 ctx->Extensions.EXT_blend_minmax = true;
188 ctx->Extensions.EXT_texture_filter_anisotropic = true;
189 ctx->Extensions.NV_texture_env_combine4 = true;
190 ctx->Const.MaxDrawBuffers = ctx->Const.MaxColorAttachments = 1;
191
192 /* This effectively disables 3D textures */
193 ctx->Const.Max3DTextureLevels = 1;
194
195 return GL_TRUE;
196 }
197
198 void
nouveau_context_deinit(struct gl_context * ctx)199 nouveau_context_deinit(struct gl_context *ctx)
200 {
201 struct nouveau_context *nctx = to_nouveau_context(ctx);
202
203 if (TNL_CONTEXT(ctx))
204 _tnl_DestroyContext(ctx);
205
206 _vbo_DestroyContext(ctx);
207
208 if (SWRAST_CONTEXT(ctx))
209 _swrast_DestroyContext(ctx);
210
211 if (ctx->Meta)
212 _mesa_meta_free(ctx);
213
214 nouveau_bufctx_del(&nctx->hw.bufctx);
215 nouveau_pushbuf_del(&nctx->hw.pushbuf);
216 nouveau_client_del(&nctx->hw.client);
217 nouveau_object_del(&nctx->hw.chan);
218
219 nouveau_scratch_destroy(ctx);
220 _mesa_free_context_data(ctx, true);
221 }
222
223 void
nouveau_context_destroy(__DRIcontext * dri_ctx)224 nouveau_context_destroy(__DRIcontext *dri_ctx)
225 {
226 struct nouveau_context *nctx = dri_ctx->driverPrivate;
227 struct gl_context *ctx = &nctx->base;
228
229 nouveau_bo_ref(NULL, &nctx->fence);
230 context_drv(ctx)->context_destroy(ctx);
231 }
232
233 void
nouveau_update_renderbuffers(__DRIcontext * dri_ctx,__DRIdrawable * draw)234 nouveau_update_renderbuffers(__DRIcontext *dri_ctx, __DRIdrawable *draw)
235 {
236 struct gl_context *ctx = dri_ctx->driverPrivate;
237 struct nouveau_context *nctx = to_nouveau_context(ctx);
238 __DRIscreen *screen = dri_ctx->driScreenPriv;
239 struct gl_framebuffer *fb = draw->driverPrivate;
240 struct nouveau_framebuffer *nfb = to_nouveau_framebuffer(fb);
241 unsigned int attachments[__DRI_BUFFER_COUNT];
242 __DRIbuffer *buffers = NULL;
243 int i = 0, count, ret;
244
245 if (draw->lastStamp == draw->dri2.stamp)
246 return;
247 draw->lastStamp = draw->dri2.stamp;
248
249 if (nfb->need_front)
250 attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
251 if (fb->Visual.doubleBufferMode)
252 attachments[i++] = __DRI_BUFFER_BACK_LEFT;
253 if (fb->Visual.depthBits > 0 && fb->Visual.stencilBits > 0)
254 attachments[i++] = __DRI_BUFFER_DEPTH_STENCIL;
255 else if (fb->Visual.depthBits > 0)
256 attachments[i++] = __DRI_BUFFER_DEPTH;
257 else if (fb->Visual.stencilBits > 0)
258 attachments[i++] = __DRI_BUFFER_STENCIL;
259
260 buffers = screen->dri2.loader->getBuffers(draw, &draw->w, &draw->h,
261 attachments, i, &count,
262 draw->loaderPrivate);
263 if (buffers == NULL)
264 return;
265
266 for (i = 0; i < count; i++) {
267 struct gl_renderbuffer *rb;
268 struct nouveau_surface *s;
269 uint32_t old_name;
270 int index;
271
272 switch (buffers[i].attachment) {
273 case __DRI_BUFFER_FRONT_LEFT:
274 case __DRI_BUFFER_FAKE_FRONT_LEFT:
275 index = BUFFER_FRONT_LEFT;
276 break;
277 case __DRI_BUFFER_BACK_LEFT:
278 index = BUFFER_BACK_LEFT;
279 break;
280 case __DRI_BUFFER_DEPTH:
281 case __DRI_BUFFER_DEPTH_STENCIL:
282 index = BUFFER_DEPTH;
283 break;
284 case __DRI_BUFFER_STENCIL:
285 index = BUFFER_STENCIL;
286 break;
287 default:
288 assert(0);
289 }
290
291 rb = fb->Attachment[index].Renderbuffer;
292 s = &to_nouveau_renderbuffer(rb)->surface;
293
294 s->width = draw->w;
295 s->height = draw->h;
296 s->pitch = buffers[i].pitch;
297 s->cpp = buffers[i].cpp;
298
299 if (index == BUFFER_DEPTH && s->bo) {
300 ret = nouveau_bo_name_get(s->bo, &old_name);
301 /*
302 * Disable fast Z clears in the next frame, the
303 * depth buffer contents are undefined.
304 */
305 if (!ret && old_name != buffers[i].name)
306 nctx->hierz.clear_seq = 0;
307 }
308
309 nouveau_bo_ref(NULL, &s->bo);
310 ret = nouveau_bo_name_ref(context_dev(ctx),
311 buffers[i].name, &s->bo);
312 assert(!ret);
313 }
314
315 _mesa_resize_framebuffer(ctx, fb, draw->w, draw->h);
316 }
317
318 static void
update_framebuffer(__DRIcontext * dri_ctx,__DRIdrawable * draw,int * stamp)319 update_framebuffer(__DRIcontext *dri_ctx, __DRIdrawable *draw,
320 int *stamp)
321 {
322 struct gl_context *ctx = dri_ctx->driverPrivate;
323 struct gl_framebuffer *fb = draw->driverPrivate;
324
325 *stamp = draw->dri2.stamp;
326
327 nouveau_update_renderbuffers(dri_ctx, draw);
328 _mesa_resize_framebuffer(ctx, fb, draw->w, draw->h);
329
330 /* Clean up references to the old framebuffer objects. */
331 context_dirty(ctx, FRAMEBUFFER);
332 nouveau_bufctx_reset(to_nouveau_context(ctx)->hw.bufctx, BUFCTX_FB);
333 PUSH_KICK(context_push(ctx));
334 }
335
336 GLboolean
nouveau_context_make_current(__DRIcontext * dri_ctx,__DRIdrawable * dri_draw,__DRIdrawable * dri_read)337 nouveau_context_make_current(__DRIcontext *dri_ctx, __DRIdrawable *dri_draw,
338 __DRIdrawable *dri_read)
339 {
340 if (dri_ctx) {
341 struct nouveau_context *nctx = dri_ctx->driverPrivate;
342 struct gl_context *ctx = &nctx->base;
343
344 /* Ask the X server for new renderbuffers. */
345 if (dri_draw->driverPrivate != ctx->WinSysDrawBuffer)
346 update_framebuffer(dri_ctx, dri_draw,
347 &dri_ctx->dri2.draw_stamp);
348
349 if (dri_draw != dri_read &&
350 dri_read->driverPrivate != ctx->WinSysReadBuffer)
351 update_framebuffer(dri_ctx, dri_read,
352 &dri_ctx->dri2.read_stamp);
353
354 /* Pass it down to mesa. */
355 _mesa_make_current(ctx, dri_draw->driverPrivate,
356 dri_read->driverPrivate);
357 _mesa_update_state(ctx);
358
359 } else {
360 _mesa_make_current(NULL, NULL, NULL);
361 }
362
363 return GL_TRUE;
364 }
365
366 GLboolean
nouveau_context_unbind(__DRIcontext * dri_ctx)367 nouveau_context_unbind(__DRIcontext *dri_ctx)
368 {
369 /* Unset current context and dispatch table */
370 _mesa_make_current(NULL, NULL, NULL);
371
372 return GL_TRUE;
373 }
374
375 void
nouveau_fallback(struct gl_context * ctx,enum nouveau_fallback mode)376 nouveau_fallback(struct gl_context *ctx, enum nouveau_fallback mode)
377 {
378 struct nouveau_context *nctx = to_nouveau_context(ctx);
379
380 nctx->fallback = MAX2(HWTNL, mode);
381
382 if (mode < SWRAST) {
383 nouveau_state_emit(ctx);
384 #if 0
385 nouveau_bo_state_emit(ctx);
386 #endif
387 } else {
388 PUSH_KICK(context_push(ctx));
389 }
390 }
391
392 static void
validate_framebuffer(__DRIcontext * dri_ctx,__DRIdrawable * draw,int * stamp)393 validate_framebuffer(__DRIcontext *dri_ctx, __DRIdrawable *draw,
394 int *stamp)
395 {
396 struct gl_framebuffer *fb = draw->driverPrivate;
397 struct nouveau_framebuffer *nfb = to_nouveau_framebuffer(fb);
398 GLboolean need_front =
399 (fb->_ColorDrawBufferIndexes[0] == BUFFER_FRONT_LEFT ||
400 fb->_ColorReadBufferIndex == BUFFER_FRONT_LEFT);
401
402 if (nfb->need_front != need_front) {
403 nfb->need_front = need_front;
404 dri2InvalidateDrawable(draw);
405 }
406
407 if (draw->dri2.stamp != *stamp)
408 update_framebuffer(dri_ctx, draw, stamp);
409 }
410
411 void
nouveau_validate_framebuffer(struct gl_context * ctx)412 nouveau_validate_framebuffer(struct gl_context *ctx)
413 {
414 __DRIcontext *dri_ctx = to_nouveau_context(ctx)->dri_context;
415 __DRIdrawable *dri_draw = dri_ctx->driDrawablePriv;
416 __DRIdrawable *dri_read = dri_ctx->driReadablePriv;
417
418 if (_mesa_is_winsys_fbo(ctx->DrawBuffer))
419 validate_framebuffer(dri_ctx, dri_draw,
420 &dri_ctx->dri2.draw_stamp);
421
422 if (_mesa_is_winsys_fbo(ctx->ReadBuffer))
423 validate_framebuffer(dri_ctx, dri_read,
424 &dri_ctx->dri2.read_stamp);
425
426 if (ctx->NewState & _NEW_BUFFERS)
427 _mesa_update_state(ctx);
428 }
429