nouveau_context.c revision 8a99ec8e05ef541c586c2f8b427220d036589870 
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 "nouveau_driver.h"
29#include "nouveau_context.h"
30#include "nouveau_bufferobj.h"
31#include "nouveau_fbo.h"
32
33#include "main/dd.h"
34#include "main/framebuffer.h"
35#include "main/light.h"
36#include "main/state.h"
37#include "drivers/common/meta.h"
38#include "drivers/common/driverfuncs.h"
39#include "swrast/swrast.h"
40#include "swrast/s_context.h"
41#include "vbo/vbo.h"
42#include "tnl/tnl.h"
43#include "tnl/t_context.h"
44
45static void
46nouveau_channel_flush_notify(struct nouveau_channel *chan)
47{
48	struct nouveau_context *nctx = chan->user_private;
49	struct gl_context *ctx = &nctx->base;
50
51	if (nctx->fallback < SWRAST)
52		nouveau_bo_state_emit(ctx);
53}
54
55GLboolean
56nouveau_context_create(gl_api api,
57		       const struct gl_config *visual, __DRIcontext *dri_ctx,
58		       void *share_ctx)
59{
60	__DRIscreen *dri_screen = dri_ctx->driScreenPriv;
61	struct nouveau_screen *screen = dri_screen->private;
62	struct nouveau_context *nctx;
63	struct gl_context *ctx;
64
65	ctx = screen->driver->context_create(screen, visual, share_ctx);
66	if (!ctx)
67		return GL_FALSE;
68
69	nctx = to_nouveau_context(ctx);
70	nctx->dri_context = dri_ctx;
71	dri_ctx->driverPrivate = ctx;
72
73	return GL_TRUE;
74}
75
76GLboolean
77nouveau_context_init(struct gl_context *ctx, struct nouveau_screen *screen,
78		     const struct gl_config *visual, struct gl_context *share_ctx)
79{
80	struct nouveau_context *nctx = to_nouveau_context(ctx);
81	struct dd_function_table functions;
82	int ret;
83
84	nctx->screen = screen;
85	nctx->fallback = HWTNL;
86
87	/* Initialize the function pointers. */
88	_mesa_init_driver_functions(&functions);
89	nouveau_driver_functions_init(&functions);
90	nouveau_bufferobj_functions_init(&functions);
91	nouveau_texture_functions_init(&functions);
92	nouveau_fbo_functions_init(&functions);
93
94	/* Initialize the mesa context. */
95	_mesa_initialize_context(ctx, API_OPENGL, visual,
96                                 share_ctx, &functions, NULL);
97
98	nouveau_state_init(ctx);
99	nouveau_bo_state_init(ctx);
100	nouveau_scratch_init(ctx);
101	_mesa_meta_init(ctx);
102	_swrast_CreateContext(ctx);
103	_vbo_CreateContext(ctx);
104	_tnl_CreateContext(ctx);
105	nouveau_span_functions_init(ctx);
106	_mesa_allow_light_in_model(ctx, GL_FALSE);
107
108	/* Allocate a hardware channel. */
109	ret = nouveau_channel_alloc(context_dev(ctx), 0xbeef0201, 0xbeef0202,
110				    512*1024, &nctx->hw.chan);
111	if (ret) {
112		nouveau_error("Error initializing the FIFO.\n");
113		return GL_FALSE;
114	}
115
116	nctx->hw.chan->flush_notify = nouveau_channel_flush_notify;
117	nctx->hw.chan->user_private = nctx;
118
119	/* Enable any supported extensions. */
120	ctx->Extensions.ARB_multitexture = true;
121	ctx->Extensions.ARB_texture_mirrored_repeat = true;
122	ctx->Extensions.EXT_blend_color = true;
123	ctx->Extensions.EXT_blend_minmax = true;
124	ctx->Extensions.EXT_blend_subtract = true;
125	ctx->Extensions.EXT_fog_coord = true;
126	ctx->Extensions.EXT_framebuffer_blit = true;
127	ctx->Extensions.EXT_framebuffer_object = true;
128	ctx->Extensions.EXT_packed_depth_stencil = true;
129	ctx->Extensions.EXT_secondary_color = true;
130	ctx->Extensions.EXT_stencil_wrap = true;
131	ctx->Extensions.EXT_texture_env_add = true;
132	ctx->Extensions.EXT_texture_env_combine = true;
133	ctx->Extensions.EXT_texture_filter_anisotropic = true;
134	ctx->Extensions.EXT_texture_lod_bias = true;
135	ctx->Extensions.NV_blend_square = true;
136	ctx->Extensions.NV_texture_env_combine4 = true;
137
138	return GL_TRUE;
139}
140
141void
142nouveau_context_deinit(struct gl_context *ctx)
143{
144	struct nouveau_context *nctx = to_nouveau_context(ctx);
145
146	if (TNL_CONTEXT(ctx))
147		_tnl_DestroyContext(ctx);
148
149	if (vbo_context(ctx))
150		_vbo_DestroyContext(ctx);
151
152	if (SWRAST_CONTEXT(ctx))
153		_swrast_DestroyContext(ctx);
154
155	if (ctx->Meta)
156		_mesa_meta_free(ctx);
157
158	if (nctx->hw.chan)
159		nouveau_channel_free(&nctx->hw.chan);
160
161	nouveau_scratch_destroy(ctx);
162	nouveau_bo_state_destroy(ctx);
163	_mesa_free_context_data(ctx);
164}
165
166void
167nouveau_context_destroy(__DRIcontext *dri_ctx)
168{
169	struct nouveau_context *nctx = dri_ctx->driverPrivate;
170	struct gl_context *ctx = &nctx->base;
171
172	context_drv(ctx)->context_destroy(ctx);
173}
174
175void
176nouveau_update_renderbuffers(__DRIcontext *dri_ctx, __DRIdrawable *draw)
177{
178	struct gl_context *ctx = dri_ctx->driverPrivate;
179	struct nouveau_context *nctx = to_nouveau_context(ctx);
180	__DRIscreen *screen = dri_ctx->driScreenPriv;
181	struct gl_framebuffer *fb = draw->driverPrivate;
182	struct nouveau_framebuffer *nfb = to_nouveau_framebuffer(fb);
183	unsigned int attachments[10];
184	__DRIbuffer *buffers = NULL;
185	int i = 0, count, ret;
186
187	if (draw->lastStamp == *draw->pStamp)
188		return;
189	draw->lastStamp = *draw->pStamp;
190
191	if (nfb->need_front)
192		attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
193	if (fb->Visual.doubleBufferMode)
194		attachments[i++] = __DRI_BUFFER_BACK_LEFT;
195	if (fb->Visual.haveDepthBuffer && fb->Visual.haveStencilBuffer)
196		attachments[i++] = __DRI_BUFFER_DEPTH_STENCIL;
197	else if (fb->Visual.haveDepthBuffer)
198		attachments[i++] = __DRI_BUFFER_DEPTH;
199	else if (fb->Visual.haveStencilBuffer)
200		attachments[i++] = __DRI_BUFFER_STENCIL;
201
202	buffers = (*screen->dri2.loader->getBuffers)(draw, &draw->w, &draw->h,
203						     attachments, i, &count,
204						     draw->loaderPrivate);
205	if (buffers == NULL)
206		return;
207
208	for (i = 0; i < count; i++) {
209		struct gl_renderbuffer *rb;
210		struct nouveau_surface *s;
211		uint32_t old_name;
212		int index;
213
214		switch (buffers[i].attachment) {
215		case __DRI_BUFFER_FRONT_LEFT:
216		case __DRI_BUFFER_FAKE_FRONT_LEFT:
217			index = BUFFER_FRONT_LEFT;
218			break;
219		case __DRI_BUFFER_BACK_LEFT:
220			index = BUFFER_BACK_LEFT;
221			break;
222		case __DRI_BUFFER_DEPTH:
223		case __DRI_BUFFER_DEPTH_STENCIL:
224			index = BUFFER_DEPTH;
225			break;
226		case __DRI_BUFFER_STENCIL:
227			index = BUFFER_STENCIL;
228			break;
229		default:
230			assert(0);
231		}
232
233		rb = fb->Attachment[index].Renderbuffer;
234		s = &to_nouveau_renderbuffer(rb)->surface;
235
236		s->width = draw->w;
237		s->height = draw->h;
238		s->pitch = buffers[i].pitch;
239		s->cpp = buffers[i].cpp;
240
241		if (index == BUFFER_DEPTH && s->bo) {
242			ret = nouveau_bo_handle_get(s->bo, &old_name);
243			/*
244			 * Disable fast Z clears in the next frame, the
245			 * depth buffer contents are undefined.
246			 */
247			if (!ret && old_name != buffers[i].name)
248				nctx->hierz.clear_seq = 0;
249		}
250
251		nouveau_bo_ref(NULL, &s->bo);
252		ret = nouveau_bo_handle_ref(context_dev(ctx),
253					    buffers[i].name, &s->bo);
254		assert(!ret);
255	}
256
257	_mesa_resize_framebuffer(ctx, fb, draw->w, draw->h);
258}
259
260static void
261update_framebuffer(__DRIcontext *dri_ctx, __DRIdrawable *draw,
262		   int *stamp)
263{
264	struct gl_context *ctx = dri_ctx->driverPrivate;
265	struct gl_framebuffer *fb = draw->driverPrivate;
266
267	*stamp = *draw->pStamp;
268
269	nouveau_update_renderbuffers(dri_ctx, draw);
270	_mesa_resize_framebuffer(ctx, fb, draw->w, draw->h);
271
272	/* Clean up references to the old framebuffer objects. */
273	context_dirty(ctx, FRAMEBUFFER);
274	context_bctx(ctx, FRAMEBUFFER);
275	FIRE_RING(context_chan(ctx));
276}
277
278GLboolean
279nouveau_context_make_current(__DRIcontext *dri_ctx, __DRIdrawable *dri_draw,
280			     __DRIdrawable *dri_read)
281{
282	if (dri_ctx) {
283		struct nouveau_context *nctx = dri_ctx->driverPrivate;
284		struct gl_context *ctx = &nctx->base;
285
286		/* Ask the X server for new renderbuffers. */
287		if (dri_draw->driverPrivate != ctx->WinSysDrawBuffer)
288			update_framebuffer(dri_ctx, dri_draw,
289					   &dri_ctx->dri2.draw_stamp);
290
291		if (dri_draw != dri_read &&
292		    dri_read->driverPrivate != ctx->WinSysReadBuffer)
293			update_framebuffer(dri_ctx, dri_read,
294					   &dri_ctx->dri2.read_stamp);
295
296		/* Pass it down to mesa. */
297		_mesa_make_current(ctx, dri_draw->driverPrivate,
298				   dri_read->driverPrivate);
299		_mesa_update_state(ctx);
300
301	} else {
302		_mesa_make_current(NULL, NULL, NULL);
303	}
304
305	return GL_TRUE;
306}
307
308GLboolean
309nouveau_context_unbind(__DRIcontext *dri_ctx)
310{
311	/* Unset current context and dispatch table */
312	_mesa_make_current(NULL, NULL, NULL);
313
314	return GL_TRUE;
315}
316
317void
318nouveau_fallback(struct gl_context *ctx, enum nouveau_fallback mode)
319{
320	struct nouveau_context *nctx = to_nouveau_context(ctx);
321
322	nctx->fallback = MAX2(HWTNL, mode);
323
324	if (mode < SWRAST) {
325		nouveau_state_emit(ctx);
326		nouveau_bo_state_emit(ctx);
327	} else {
328		FIRE_RING(context_chan(ctx));
329	}
330}
331
332static void
333validate_framebuffer(__DRIcontext *dri_ctx, __DRIdrawable *draw,
334		     int *stamp)
335{
336	struct gl_framebuffer *fb = draw->driverPrivate;
337	struct nouveau_framebuffer *nfb = to_nouveau_framebuffer(fb);
338	GLboolean need_front =
339		(fb->_ColorDrawBufferIndexes[0] == BUFFER_FRONT_LEFT ||
340		 fb->_ColorReadBufferIndex == BUFFER_FRONT_LEFT);
341
342	if (nfb->need_front != need_front) {
343		nfb->need_front = need_front;
344		dri2InvalidateDrawable(draw);
345	}
346
347	if (*draw->pStamp != *stamp)
348		update_framebuffer(dri_ctx, draw, stamp);
349}
350
351void
352nouveau_validate_framebuffer(struct gl_context *ctx)
353{
354	__DRIcontext *dri_ctx = to_nouveau_context(ctx)->dri_context;
355	__DRIdrawable *dri_draw = dri_ctx->driDrawablePriv;
356	__DRIdrawable *dri_read = dri_ctx->driReadablePriv;
357
358	if (ctx->DrawBuffer->Name == 0)
359		validate_framebuffer(dri_ctx, dri_draw,
360				     &dri_ctx->dri2.draw_stamp);
361
362	if (ctx->ReadBuffer->Name == 0)
363		validate_framebuffer(dri_ctx, dri_read,
364				     &dri_ctx->dri2.read_stamp);
365
366	if (ctx->NewState & _NEW_BUFFERS)
367		_mesa_update_state(ctx);
368}
369