nouveau_context.c revision cbe0dd0f5a5468f821fe39b855e83ae19f28aa7f 
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_bufferobj.h"
30#include "nouveau_fbo.h"
31
32#include "main/dd.h"
33#include "main/framebuffer.h"
34#include "main/light.h"
35#include "main/state.h"
36#include "drivers/common/meta.h"
37#include "drivers/common/driverfuncs.h"
38#include "swrast/swrast.h"
39#include "swrast/s_context.h"
40#include "vbo/vbo.h"
41#include "tnl/tnl.h"
42#include "tnl/t_context.h"
43
44#define need_GL_EXT_framebuffer_object
45#define need_GL_EXT_fog_coord
46#define need_GL_EXT_secondary_color
47
48#include "main/remap_helper.h"
49
50static const struct dri_extension nouveau_extensions[] = {
51	{ "GL_ARB_multitexture",	NULL },
52	{ "GL_ARB_texture_env_add",	NULL },
53	{ "GL_ARB_texture_mirrored_repeat", NULL },
54	{ "GL_EXT_fog_coord",		GL_EXT_fog_coord_functions },
55	{ "GL_EXT_framebuffer_blit",	NULL },
56	{ "GL_EXT_framebuffer_object",	GL_EXT_framebuffer_object_functions },
57	{ "GL_EXT_packed_depth_stencil", NULL},
58	{ "GL_EXT_secondary_color",	GL_EXT_secondary_color_functions },
59	{ "GL_EXT_stencil_wrap",	NULL },
60	{ "GL_EXT_texture_env_combine",	NULL },
61	{ "GL_EXT_texture_filter_anisotropic", NULL },
62	{ "GL_EXT_texture_lod_bias",	NULL },
63	{ "GL_NV_blend_square",         NULL },
64	{ "GL_NV_texture_env_combine4",	NULL },
65	{ "GL_SGIS_generate_mipmap",	NULL },
66	{ NULL,				NULL }
67};
68
69static void
70nouveau_channel_flush_notify(struct nouveau_channel *chan)
71{
72	struct nouveau_context *nctx = chan->user_private;
73	GLcontext *ctx = &nctx->base;
74
75	if (nctx->fallback < SWRAST)
76		nouveau_bo_state_emit(ctx);
77}
78
79GLboolean
80nouveau_context_create(gl_api api,
81		       const __GLcontextModes *visual, __DRIcontext *dri_ctx,
82		       void *share_ctx)
83{
84	__DRIscreen *dri_screen = dri_ctx->driScreenPriv;
85	struct nouveau_screen *screen = dri_screen->private;
86	struct nouveau_context *nctx;
87	GLcontext *ctx;
88
89	ctx = screen->driver->context_create(screen, visual, share_ctx);
90	if (!ctx)
91		return GL_FALSE;
92
93	nctx = to_nouveau_context(ctx);
94	nctx->dri_context = dri_ctx;
95	dri_ctx->driverPrivate = ctx;
96
97	return GL_TRUE;
98}
99
100GLboolean
101nouveau_context_init(GLcontext *ctx, struct nouveau_screen *screen,
102		     const GLvisual *visual, GLcontext *share_ctx)
103{
104	struct nouveau_context *nctx = to_nouveau_context(ctx);
105	struct dd_function_table functions;
106	int ret;
107
108	nctx->screen = screen;
109	nctx->fallback = HWTNL;
110
111	/* Initialize the function pointers. */
112	_mesa_init_driver_functions(&functions);
113	nouveau_driver_functions_init(&functions);
114	nouveau_bufferobj_functions_init(&functions);
115	nouveau_texture_functions_init(&functions);
116	nouveau_fbo_functions_init(&functions);
117
118	/* Initialize the mesa context. */
119	_mesa_initialize_context(ctx, visual, share_ctx, &functions, NULL);
120
121	nouveau_state_init(ctx);
122	nouveau_bo_state_init(ctx);
123	_mesa_meta_init(ctx);
124	_swrast_CreateContext(ctx);
125	_vbo_CreateContext(ctx);
126	_tnl_CreateContext(ctx);
127	nouveau_span_functions_init(ctx);
128	_mesa_allow_light_in_model(ctx, GL_FALSE);
129
130	/* Allocate a hardware channel. */
131	ret = nouveau_channel_alloc(context_dev(ctx), 0xbeef0201, 0xbeef0202,
132				    &nctx->hw.chan);
133	if (ret) {
134		nouveau_error("Error initializing the FIFO.\n");
135		return GL_FALSE;
136	}
137
138	nctx->hw.chan->flush_notify = nouveau_channel_flush_notify;
139	nctx->hw.chan->user_private = nctx;
140
141	/* Enable any supported extensions. */
142	driInitExtensions(ctx, nouveau_extensions, GL_TRUE);
143
144	return GL_TRUE;
145}
146
147void
148nouveau_context_deinit(GLcontext *ctx)
149{
150	struct nouveau_context *nctx = to_nouveau_context(ctx);
151
152	if (TNL_CONTEXT(ctx))
153		_tnl_DestroyContext(ctx);
154
155	if (vbo_context(ctx))
156		_vbo_DestroyContext(ctx);
157
158	if (SWRAST_CONTEXT(ctx))
159		_swrast_DestroyContext(ctx);
160
161	if (ctx->Meta)
162		_mesa_meta_free(ctx);
163
164	if (nctx->hw.chan)
165		nouveau_channel_free(&nctx->hw.chan);
166
167	nouveau_bo_state_destroy(ctx);
168	_mesa_free_context_data(ctx);
169}
170
171void
172nouveau_context_destroy(__DRIcontext *dri_ctx)
173{
174	struct nouveau_context *nctx = dri_ctx->driverPrivate;
175	GLcontext *ctx = &nctx->base;
176
177	context_drv(ctx)->context_destroy(ctx);
178}
179
180void
181nouveau_update_renderbuffers(__DRIcontext *dri_ctx, __DRIdrawable *draw)
182{
183	GLcontext *ctx = dri_ctx->driverPrivate;
184	__DRIscreen *screen = dri_ctx->driScreenPriv;
185	struct gl_framebuffer *fb = draw->driverPrivate;
186	unsigned int attachments[10];
187	__DRIbuffer *buffers = NULL;
188	int i = 0, count, ret;
189
190	if (draw->lastStamp == *draw->pStamp)
191		return;
192	draw->lastStamp = *draw->pStamp;
193
194	attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
195	if (fb->Visual.doubleBufferMode)
196		attachments[i++] = __DRI_BUFFER_BACK_LEFT;
197	if (fb->Visual.haveDepthBuffer && fb->Visual.haveStencilBuffer)
198		attachments[i++] = __DRI_BUFFER_DEPTH_STENCIL;
199	else if (fb->Visual.haveDepthBuffer)
200		attachments[i++] = __DRI_BUFFER_DEPTH;
201	else if (fb->Visual.haveStencilBuffer)
202		attachments[i++] = __DRI_BUFFER_STENCIL;
203
204	buffers = (*screen->dri2.loader->getBuffers)(draw, &draw->w, &draw->h,
205						     attachments, i, &count,
206						     draw->loaderPrivate);
207	if (buffers == NULL)
208		return;
209
210	for (i = 0; i < count; i++) {
211		struct gl_renderbuffer *rb;
212		struct nouveau_surface *s;
213		uint32_t old_handle;
214		int index;
215
216		switch (buffers[i].attachment) {
217		case __DRI_BUFFER_FRONT_LEFT:
218		case __DRI_BUFFER_FAKE_FRONT_LEFT:
219			index = BUFFER_FRONT_LEFT;
220			break;
221		case __DRI_BUFFER_BACK_LEFT:
222			index = BUFFER_BACK_LEFT;
223			break;
224		case __DRI_BUFFER_DEPTH:
225		case __DRI_BUFFER_DEPTH_STENCIL:
226			index = BUFFER_DEPTH;
227			break;
228		case __DRI_BUFFER_STENCIL:
229			index = BUFFER_STENCIL;
230			break;
231		default:
232			assert(0);
233		}
234
235		rb = fb->Attachment[index].Renderbuffer;
236		s = &to_nouveau_renderbuffer(rb)->surface;
237
238		s->width = draw->w;
239		s->height = draw->h;
240		s->pitch = buffers[i].pitch;
241		s->cpp = buffers[i].cpp;
242
243		/* Don't bother to reopen the bo if it happens to be
244		 * the same. */
245		if (s->bo) {
246			ret = nouveau_bo_handle_get(s->bo, &old_handle);
247			assert(!ret);
248		}
249
250		if (!s->bo || old_handle != buffers[i].name) {
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
258	_mesa_resize_framebuffer(NULL, fb, draw->w, draw->h);
259}
260
261static void
262update_framebuffer(__DRIcontext *dri_ctx, __DRIdrawable *draw,
263		   int *stamp)
264{
265	GLcontext *ctx = dri_ctx->driverPrivate;
266	struct gl_framebuffer *fb = draw->driverPrivate;
267
268	*stamp = *draw->pStamp;
269
270	nouveau_update_renderbuffers(dri_ctx, draw);
271	_mesa_resize_framebuffer(ctx, fb, draw->w, draw->h);
272
273	context_dirty(ctx, FRAMEBUFFER);
274}
275
276GLboolean
277nouveau_context_make_current(__DRIcontext *dri_ctx, __DRIdrawable *dri_draw,
278			     __DRIdrawable *dri_read)
279{
280	if (dri_ctx) {
281		struct nouveau_context *nctx = dri_ctx->driverPrivate;
282		GLcontext *ctx = &nctx->base;
283
284		/* Ask the X server for new renderbuffers. */
285		if (dri_draw->driverPrivate != ctx->WinSysDrawBuffer)
286			update_framebuffer(dri_ctx, dri_draw,
287					   &dri_ctx->dri2.draw_stamp);
288
289		if (dri_draw != dri_read &&
290		    dri_read->driverPrivate != ctx->WinSysReadBuffer)
291			update_framebuffer(dri_ctx, dri_read,
292					   &dri_ctx->dri2.read_stamp);
293
294		/* Pass it down to mesa. */
295		_mesa_make_current(ctx, dri_draw->driverPrivate,
296				   dri_read->driverPrivate);
297		_mesa_update_state(ctx);
298
299		FIRE_RING(context_chan(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 dispath table */
312	_mesa_make_current(NULL, NULL, NULL);
313
314	return GL_TRUE;
315}
316
317void
318nouveau_fallback(GLcontext *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	else
327		FIRE_RING(context_chan(ctx));
328}
329
330void
331nouveau_validate_framebuffer(GLcontext *ctx)
332{
333	__DRIcontext *dri_ctx = to_nouveau_context(ctx)->dri_context;
334	__DRIdrawable *dri_draw = dri_ctx->driDrawablePriv;
335	__DRIdrawable *dri_read = dri_ctx->driReadablePriv;
336
337	if (ctx->DrawBuffer->Name == 0 &&
338	    dri_ctx->dri2.draw_stamp != *dri_draw->pStamp)
339		update_framebuffer(dri_ctx, dri_draw,
340				   &dri_ctx->dri2.draw_stamp);
341
342	if (ctx->ReadBuffer->Name == 0 && dri_draw != dri_read &&
343	    dri_ctx->dri2.read_stamp != *dri_read->pStamp)
344		update_framebuffer(dri_ctx, dri_read,
345				   &dri_ctx->dri2.read_stamp);
346
347	if (nouveau_next_dirty_state(ctx) >= 0) {
348		nouveau_state_emit(ctx);
349		FIRE_RING(context_chan(ctx));
350	}
351}
352