nouveau_context.c revision c695e80017373caf6e8d7139b8d3df2d945ccce5 
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_env_combine",	NULL },
54	{ "GL_ARB_texture_env_dot3",	NULL },
55	{ "GL_ARB_texture_mirrored_repeat", NULL },
56	{ "GL_EXT_fog_coord",		GL_EXT_fog_coord_functions },
57	{ "GL_EXT_framebuffer_object",	GL_EXT_framebuffer_object_functions },
58	{ "GL_EXT_secondary_color",	GL_EXT_secondary_color_functions },
59	{ "GL_EXT_stencil_wrap",	NULL },
60	{ "GL_EXT_texture_lod_bias",	NULL },
61	{ "GL_NV_blend_square",         NULL },
62	{ "GL_SGIS_generate_mipmap",	NULL },
63	{ NULL,				NULL }
64};
65
66static void
67nouveau_channel_flush_notify(struct nouveau_channel *chan)
68{
69	struct nouveau_context *nctx = chan->user_private;
70	GLcontext *ctx = &nctx->base;
71
72	if (nctx->fallback < SWRAST)
73		nouveau_bo_state_emit(ctx);
74}
75
76GLboolean
77nouveau_context_create(const __GLcontextModes *visual, __DRIcontext *dri_ctx,
78		       void *share_ctx)
79{
80	__DRIscreen *dri_screen = dri_ctx->driScreenPriv;
81	struct nouveau_screen *screen = dri_screen->private;
82	struct nouveau_context *nctx;
83	GLcontext *ctx;
84
85	ctx = screen->driver->context_create(screen, visual, share_ctx);
86	if (!ctx)
87		return GL_FALSE;
88
89	nctx = to_nouveau_context(ctx);
90	nctx->dri_context = dri_ctx;
91	dri_ctx->driverPrivate = ctx;
92
93	return GL_TRUE;
94}
95
96GLboolean
97nouveau_context_init(GLcontext *ctx, struct nouveau_screen *screen,
98		     const GLvisual *visual, GLcontext *share_ctx)
99{
100	struct nouveau_context *nctx = to_nouveau_context(ctx);
101	struct dd_function_table functions;
102	int ret;
103
104	nctx->screen = screen;
105	nctx->fallback = HWTNL;
106
107	/* Initialize the function pointers. */
108	_mesa_init_driver_functions(&functions);
109	nouveau_driver_functions_init(&functions);
110	nouveau_bufferobj_functions_init(&functions);
111	nouveau_texture_functions_init(&functions);
112	nouveau_fbo_functions_init(&functions);
113
114	/* Initialize the mesa context. */
115	_mesa_initialize_context(ctx, visual, share_ctx, &functions, NULL);
116
117	nouveau_state_init(ctx);
118	nouveau_bo_state_init(ctx);
119	_mesa_meta_init(ctx);
120	_swrast_CreateContext(ctx);
121	_vbo_CreateContext(ctx);
122	_tnl_CreateContext(ctx);
123	nouveau_span_functions_init(ctx);
124	_mesa_allow_light_in_model(ctx, GL_FALSE);
125
126	/* Allocate a hardware channel. */
127	ret = nouveau_channel_alloc(context_dev(ctx), 0xbeef0201, 0xbeef0202,
128				    &nctx->hw.chan);
129	if (ret) {
130		nouveau_error("Error initializing the FIFO.\n");
131		return GL_FALSE;
132	}
133
134	nctx->hw.chan->flush_notify = nouveau_channel_flush_notify;
135	nctx->hw.chan->user_private = nctx;
136
137	/* Enable any supported extensions. */
138	driInitExtensions(ctx, nouveau_extensions, GL_TRUE);
139
140	return GL_TRUE;
141}
142
143void
144nouveau_context_deinit(GLcontext *ctx)
145{
146	struct nouveau_context *nctx = to_nouveau_context(ctx);
147
148	if (TNL_CONTEXT(ctx))
149		_tnl_DestroyContext(ctx);
150
151	if (vbo_context(ctx))
152		_vbo_DestroyContext(ctx);
153
154	if (SWRAST_CONTEXT(ctx))
155		_swrast_DestroyContext(ctx);
156
157	if (ctx->Meta)
158		_mesa_meta_free(ctx);
159
160	if (nctx->hw.chan)
161		nouveau_channel_free(&nctx->hw.chan);
162
163	nouveau_bo_state_destroy(ctx);
164	_mesa_free_context_data(ctx);
165}
166
167void
168nouveau_context_destroy(__DRIcontext *dri_ctx)
169{
170	struct nouveau_context *nctx = dri_ctx->driverPrivate;
171	GLcontext *ctx = &nctx->base;
172
173	context_drv(ctx)->context_destroy(ctx);
174}
175
176void
177nouveau_update_renderbuffers(__DRIcontext *dri_ctx, __DRIdrawable *draw)
178{
179	GLcontext *ctx = dri_ctx->driverPrivate;
180	__DRIscreen *screen = dri_ctx->driScreenPriv;
181	struct gl_framebuffer *fb = draw->driverPrivate;
182	unsigned int attachments[10];
183	__DRIbuffer *buffers = NULL;
184	int i = 0, count, ret;
185
186	if (draw->lastStamp == *draw->pStamp)
187		return;
188	draw->lastStamp = *draw->pStamp;
189
190	attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
191	if (fb->Visual.doubleBufferMode)
192		attachments[i++] = __DRI_BUFFER_BACK_LEFT;
193	if (fb->Visual.haveDepthBuffer && fb->Visual.haveStencilBuffer)
194		attachments[i++] = __DRI_BUFFER_DEPTH_STENCIL;
195	else if (fb->Visual.haveDepthBuffer)
196		attachments[i++] = __DRI_BUFFER_DEPTH;
197	else if (fb->Visual.haveStencilBuffer)
198		attachments[i++] = __DRI_BUFFER_STENCIL;
199
200	buffers = (*screen->dri2.loader->getBuffers)(draw, &draw->w, &draw->h,
201						     attachments, i, &count,
202						     draw->loaderPrivate);
203	if (buffers == NULL)
204		return;
205
206	for (i = 0; i < count; i++) {
207		struct gl_renderbuffer *rb;
208		struct nouveau_surface *s;
209		uint32_t old_handle;
210		int index;
211
212		switch (buffers[i].attachment) {
213		case __DRI_BUFFER_FRONT_LEFT:
214		case __DRI_BUFFER_FAKE_FRONT_LEFT:
215			index = BUFFER_FRONT_LEFT;
216			break;
217		case __DRI_BUFFER_BACK_LEFT:
218			index = BUFFER_BACK_LEFT;
219			break;
220		case __DRI_BUFFER_DEPTH:
221		case __DRI_BUFFER_DEPTH_STENCIL:
222			index = BUFFER_DEPTH;
223			break;
224		case __DRI_BUFFER_STENCIL:
225			index = BUFFER_STENCIL;
226			break;
227		default:
228			assert(0);
229		}
230
231		rb = fb->Attachment[index].Renderbuffer;
232		s = &to_nouveau_renderbuffer(rb)->surface;
233
234		s->width = draw->w;
235		s->height = draw->h;
236		s->pitch = buffers[i].pitch;
237		s->cpp = buffers[i].cpp;
238
239		/* Don't bother to reopen the bo if it happens to be
240		 * the same. */
241		if (s->bo) {
242			ret = nouveau_bo_handle_get(s->bo, &old_handle);
243			assert(!ret);
244		}
245
246		if (!s->bo || old_handle != buffers[i].name) {
247			nouveau_bo_ref(NULL, &s->bo);
248			ret = nouveau_bo_handle_ref(context_dev(ctx),
249						    buffers[i].name, &s->bo);
250			assert(!ret);
251		}
252	}
253
254	_mesa_resize_framebuffer(NULL, fb, draw->w, draw->h);
255}
256
257static void
258update_framebuffer(__DRIcontext *dri_ctx, __DRIdrawable *draw,
259		   int *stamp)
260{
261	GLcontext *ctx = dri_ctx->driverPrivate;
262	struct gl_framebuffer *fb = draw->driverPrivate;
263
264	*stamp = *draw->pStamp;
265
266	nouveau_update_renderbuffers(dri_ctx, draw);
267	_mesa_resize_framebuffer(ctx, fb, draw->w, draw->h);
268
269	context_dirty(ctx, FRAMEBUFFER);
270}
271
272GLboolean
273nouveau_context_make_current(__DRIcontext *dri_ctx, __DRIdrawable *dri_draw,
274			     __DRIdrawable *dri_read)
275{
276	if (dri_ctx) {
277		struct nouveau_context *nctx = dri_ctx->driverPrivate;
278		GLcontext *ctx = &nctx->base;
279
280		/* Ask the X server for new renderbuffers. */
281		if (dri_draw->driverPrivate != ctx->WinSysDrawBuffer)
282			update_framebuffer(dri_ctx, dri_draw,
283					   &dri_ctx->dri2.draw_stamp);
284
285		if (dri_draw != dri_read &&
286		    dri_read->driverPrivate != ctx->WinSysReadBuffer)
287			update_framebuffer(dri_ctx, dri_read,
288					   &dri_ctx->dri2.read_stamp);
289
290		/* Pass it down to mesa. */
291		_mesa_make_current(ctx, dri_draw->driverPrivate,
292				   dri_read->driverPrivate);
293		_mesa_update_state(ctx);
294
295		FIRE_RING(context_chan(ctx));
296
297	} else {
298		_mesa_make_current(NULL, NULL, NULL);
299	}
300
301	return GL_TRUE;
302}
303
304GLboolean
305nouveau_context_unbind(__DRIcontext *dri_ctx)
306{
307	return GL_TRUE;
308}
309
310void
311nouveau_fallback(GLcontext *ctx, enum nouveau_fallback mode)
312{
313	struct nouveau_context *nctx = to_nouveau_context(ctx);
314
315	nctx->fallback = MAX2(HWTNL, mode);
316
317	if (mode < SWRAST)
318		nouveau_state_emit(ctx);
319	else
320		FIRE_RING(context_chan(ctx));
321}
322
323void
324nouveau_validate_framebuffer(GLcontext *ctx)
325{
326	__DRIcontext *dri_ctx = to_nouveau_context(ctx)->dri_context;
327	__DRIdrawable *dri_draw = dri_ctx->driDrawablePriv;
328	__DRIdrawable *dri_read = dri_ctx->driReadablePriv;
329
330	if (ctx->DrawBuffer->Name == 0 &&
331	    dri_ctx->dri2.draw_stamp != *dri_draw->pStamp)
332		update_framebuffer(dri_ctx, dri_draw,
333				   &dri_ctx->dri2.draw_stamp);
334
335	if (ctx->ReadBuffer->Name == 0 && dri_draw != dri_read &&
336	    dri_ctx->dri2.read_stamp != *dri_read->pStamp)
337		update_framebuffer(dri_ctx, dri_read,
338				   &dri_ctx->dri2.read_stamp);
339
340	if (nouveau_next_dirty_state(ctx) >= 0) {
341		nouveau_state_emit(ctx);
342		FIRE_RING(context_chan(ctx));
343	}
344}
345