intel_screen.c revision a7a9a91d7b28e5b5faed509d00f0f951e3136b1b 
1/**************************************************************************
2 *
3 * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
4 * All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
16 * of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 *
26 **************************************************************************/
27
28#include "main/glheader.h"
29#include "main/context.h"
30#include "main/framebuffer.h"
31#include "main/renderbuffer.h"
32#include "main/hash.h"
33#include "main/fbobject.h"
34
35#include "utils.h"
36#include "xmlpool.h"
37
38#include "intel_batchbuffer.h"
39#include "intel_buffers.h"
40#include "intel_bufmgr.h"
41#include "intel_chipset.h"
42#include "intel_fbo.h"
43#include "intel_screen.h"
44#include "intel_tex.h"
45#include "intel_regions.h"
46
47#include "i915_drm.h"
48
49#define DRI_CONF_TEXTURE_TILING(def) \
50
51PUBLIC const char __driConfigOptions[] =
52   DRI_CONF_BEGIN
53   DRI_CONF_SECTION_PERFORMANCE
54      DRI_CONF_VBLANK_MODE(DRI_CONF_VBLANK_ALWAYS_SYNC)
55      /* Options correspond to DRI_CONF_BO_REUSE_DISABLED,
56       * DRI_CONF_BO_REUSE_ALL
57       */
58      DRI_CONF_OPT_BEGIN_V(bo_reuse, enum, 1, "0:1")
59	 DRI_CONF_DESC_BEGIN(en, "Buffer object reuse")
60	    DRI_CONF_ENUM(0, "Disable buffer object reuse")
61	    DRI_CONF_ENUM(1, "Enable reuse of all sizes of buffer objects")
62	 DRI_CONF_DESC_END
63      DRI_CONF_OPT_END
64
65      DRI_CONF_OPT_BEGIN(texture_tiling, bool, true)
66	 DRI_CONF_DESC(en, "Enable texture tiling")
67      DRI_CONF_OPT_END
68
69      DRI_CONF_OPT_BEGIN(early_z, bool, false)
70	 DRI_CONF_DESC(en, "Enable early Z in classic mode (unstable, 945-only).")
71      DRI_CONF_OPT_END
72
73      DRI_CONF_OPT_BEGIN(fragment_shader, bool, false)
74	 DRI_CONF_DESC(en, "Enable limited ARB_fragment_shader support on 915/945.")
75      DRI_CONF_OPT_END
76
77   DRI_CONF_SECTION_END
78   DRI_CONF_SECTION_QUALITY
79      DRI_CONF_FORCE_S3TC_ENABLE(false)
80      DRI_CONF_ALLOW_LARGE_TEXTURES(2)
81   DRI_CONF_SECTION_END
82   DRI_CONF_SECTION_DEBUG
83     DRI_CONF_NO_RAST(false)
84     DRI_CONF_ALWAYS_FLUSH_BATCH(false)
85     DRI_CONF_ALWAYS_FLUSH_CACHE(false)
86
87      DRI_CONF_OPT_BEGIN(stub_occlusion_query, bool, false)
88	 DRI_CONF_DESC(en, "Enable stub ARB_occlusion_query support on 915/945.")
89      DRI_CONF_OPT_END
90   DRI_CONF_SECTION_END
91DRI_CONF_END;
92
93const GLuint __driNConfigOptions = 11;
94
95#ifdef USE_NEW_INTERFACE
96static PFNGLXCREATECONTEXTMODES create_context_modes = NULL;
97#endif /*USE_NEW_INTERFACE */
98
99static const __DRItexBufferExtension intelTexBufferExtension = {
100    { __DRI_TEX_BUFFER, __DRI_TEX_BUFFER_VERSION },
101   intelSetTexBuffer,
102   intelSetTexBuffer2,
103};
104
105static void
106intelDRI2Flush(__DRIdrawable *drawable)
107{
108   struct intel_context *intel = drawable->driContextPriv->driverPrivate;
109
110   if (intel->gen < 4)
111      INTEL_FIREVERTICES(intel);
112
113   if (intel->batch->map != intel->batch->ptr)
114      intel_batchbuffer_flush(intel->batch);
115}
116
117static void
118intelDRI2Invalidate(__DRIdrawable *drawable)
119{
120   struct intel_context *intel = drawable->driContextPriv->driverPrivate;
121
122   intel->using_dri2_swapbuffers = GL_TRUE;
123   dri2InvalidateDrawable(drawable);
124}
125
126static const struct __DRI2flushExtensionRec intelFlushExtension = {
127    { __DRI2_FLUSH, __DRI2_FLUSH_VERSION },
128    intelDRI2Flush,
129    intelDRI2Invalidate,
130};
131
132static __DRIimage *
133intel_create_image_from_name(__DRIcontext *context,
134			     int width, int height, int format,
135			     int name, int pitch, void *loaderPrivate)
136{
137    __DRIimage *image;
138    struct intel_context *intel = context->driverPrivate;
139    int cpp;
140
141    image = CALLOC(sizeof *image);
142    if (image == NULL)
143	return NULL;
144
145    switch (format) {
146    case __DRI_IMAGE_FORMAT_RGB565:
147       image->format = MESA_FORMAT_RGB565;
148       image->internal_format = GL_RGB;
149       image->data_type = GL_UNSIGNED_BYTE;
150       break;
151    case __DRI_IMAGE_FORMAT_XRGB8888:
152       image->format = MESA_FORMAT_XRGB8888;
153       image->internal_format = GL_RGB;
154       image->data_type = GL_UNSIGNED_BYTE;
155       break;
156    case __DRI_IMAGE_FORMAT_ARGB8888:
157       image->format = MESA_FORMAT_ARGB8888;
158       image->internal_format = GL_RGBA;
159       image->data_type = GL_UNSIGNED_BYTE;
160       break;
161    default:
162       free(image);
163       return NULL;
164    }
165
166    image->data = loaderPrivate;
167    cpp = _mesa_get_format_bytes(image->format);
168
169    image->region = intel_region_alloc_for_handle(intel, cpp, width, height,
170						  pitch, name, "image");
171    if (image->region == NULL) {
172       FREE(image);
173       return NULL;
174    }
175
176    return image;
177}
178
179static __DRIimage *
180intel_create_image_from_renderbuffer(__DRIcontext *context,
181				     int renderbuffer, void *loaderPrivate)
182{
183   __DRIimage *image;
184   struct intel_context *intel = context->driverPrivate;
185   struct gl_renderbuffer *rb;
186   struct intel_renderbuffer *irb;
187
188   rb = _mesa_lookup_renderbuffer(&intel->ctx, renderbuffer);
189   if (!rb) {
190      _mesa_error(&intel->ctx,
191		  GL_INVALID_OPERATION, "glRenderbufferExternalMESA");
192      return NULL;
193   }
194
195   irb = intel_renderbuffer(rb);
196   image = CALLOC(sizeof *image);
197   if (image == NULL)
198      return NULL;
199
200   image->internal_format = rb->InternalFormat;
201   image->format = rb->Format;
202   image->data_type = rb->DataType;
203   image->data = loaderPrivate;
204   intel_region_reference(&image->region, irb->region);
205
206   return image;
207}
208
209static void
210intel_destroy_image(__DRIimage *image)
211{
212    intel_region_release(&image->region);
213    FREE(image);
214}
215
216static struct __DRIimageExtensionRec intelImageExtension = {
217    { __DRI_IMAGE, __DRI_IMAGE_VERSION },
218    intel_create_image_from_name,
219    intel_create_image_from_renderbuffer,
220    intel_destroy_image,
221};
222
223static const __DRIextension *intelScreenExtensions[] = {
224    &driReadDrawableExtension,
225    &intelTexBufferExtension.base,
226    &intelFlushExtension.base,
227    &intelImageExtension.base,
228    NULL
229};
230
231static GLboolean
232intel_get_param(__DRIscreen *psp, int param, int *value)
233{
234   int ret;
235   struct drm_i915_getparam gp;
236
237   gp.param = param;
238   gp.value = value;
239
240   ret = drmCommandWriteRead(psp->fd, DRM_I915_GETPARAM, &gp, sizeof(gp));
241   if (ret) {
242      _mesa_warning(NULL, "drm_i915_getparam: %d", ret);
243      return GL_FALSE;
244   }
245
246   return GL_TRUE;
247}
248
249static void
250nop_callback(GLuint key, void *data, void *userData)
251{
252}
253
254static void
255intelDestroyScreen(__DRIscreen * sPriv)
256{
257   struct intel_screen *intelScreen = sPriv->private;
258
259   dri_bufmgr_destroy(intelScreen->bufmgr);
260   driDestroyOptionInfo(&intelScreen->optionCache);
261
262   /* Some regions may still have references to them at this point, so
263    * flush the hash table to prevent _mesa_DeleteHashTable() from
264    * complaining about the hash not being empty; */
265   _mesa_HashDeleteAll(intelScreen->named_regions, nop_callback, NULL);
266   _mesa_DeleteHashTable(intelScreen->named_regions);
267
268   FREE(intelScreen);
269   sPriv->private = NULL;
270}
271
272
273/**
274 * This is called when we need to set up GL rendering to a new X window.
275 */
276static GLboolean
277intelCreateBuffer(__DRIscreen * driScrnPriv,
278                  __DRIdrawable * driDrawPriv,
279                  const __GLcontextModes * mesaVis, GLboolean isPixmap)
280{
281   struct intel_renderbuffer *rb;
282
283   if (isPixmap) {
284      return GL_FALSE;          /* not implemented */
285   }
286   else {
287      GLboolean swStencil = (mesaVis->stencilBits > 0 &&
288                             mesaVis->depthBits != 24);
289      gl_format rgbFormat;
290
291      struct gl_framebuffer *fb = CALLOC_STRUCT(gl_framebuffer);
292
293      if (!fb)
294	 return GL_FALSE;
295
296      _mesa_initialize_window_framebuffer(fb, mesaVis);
297
298      if (mesaVis->redBits == 5)
299	 rgbFormat = MESA_FORMAT_RGB565;
300      else if (mesaVis->alphaBits == 0)
301	 rgbFormat = MESA_FORMAT_XRGB8888;
302      else
303	 rgbFormat = MESA_FORMAT_ARGB8888;
304
305      /* setup the hardware-based renderbuffers */
306      rb = intel_create_renderbuffer(rgbFormat);
307      _mesa_add_renderbuffer(fb, BUFFER_FRONT_LEFT, &rb->Base);
308
309      if (mesaVis->doubleBufferMode) {
310	 rb = intel_create_renderbuffer(rgbFormat);
311         _mesa_add_renderbuffer(fb, BUFFER_BACK_LEFT, &rb->Base);
312      }
313
314      if (mesaVis->depthBits == 24) {
315	 assert(mesaVis->stencilBits == 8);
316	 /* combined depth/stencil buffer */
317	 struct intel_renderbuffer *depthStencilRb
318	    = intel_create_renderbuffer(MESA_FORMAT_S8_Z24);
319	 /* note: bind RB to two attachment points */
320	 _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &depthStencilRb->Base);
321	 _mesa_add_renderbuffer(fb, BUFFER_STENCIL, &depthStencilRb->Base);
322      }
323      else if (mesaVis->depthBits == 16) {
324         /* just 16-bit depth buffer, no hw stencil */
325         struct intel_renderbuffer *depthRb
326	    = intel_create_renderbuffer(MESA_FORMAT_Z16);
327         _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &depthRb->Base);
328      }
329
330      /* now add any/all software-based renderbuffers we may need */
331      _mesa_add_soft_renderbuffers(fb,
332                                   GL_FALSE, /* never sw color */
333                                   GL_FALSE, /* never sw depth */
334                                   swStencil, mesaVis->accumRedBits > 0,
335                                   GL_FALSE, /* never sw alpha */
336                                   GL_FALSE  /* never sw aux */ );
337      driDrawPriv->driverPrivate = fb;
338
339      return GL_TRUE;
340   }
341}
342
343static void
344intelDestroyBuffer(__DRIdrawable * driDrawPriv)
345{
346    struct gl_framebuffer *fb = driDrawPriv->driverPrivate;
347
348    _mesa_reference_framebuffer(&fb, NULL);
349}
350
351/* There are probably better ways to do this, such as an
352 * init-designated function to register chipids and createcontext
353 * functions.
354 */
355extern GLboolean i830CreateContext(const __GLcontextModes * mesaVis,
356                                   __DRIcontext * driContextPriv,
357                                   void *sharedContextPrivate);
358
359extern GLboolean i915CreateContext(const __GLcontextModes * mesaVis,
360                                   __DRIcontext * driContextPriv,
361                                   void *sharedContextPrivate);
362extern GLboolean brwCreateContext(const __GLcontextModes * mesaVis,
363				  __DRIcontext * driContextPriv,
364				  void *sharedContextPrivate);
365
366static GLboolean
367intelCreateContext(gl_api api,
368		   const __GLcontextModes * mesaVis,
369                   __DRIcontext * driContextPriv,
370                   void *sharedContextPrivate)
371{
372   __DRIscreen *sPriv = driContextPriv->driScreenPriv;
373   struct intel_screen *intelScreen = sPriv->private;
374
375#ifdef I915
376   if (IS_9XX(intelScreen->deviceID)) {
377      if (!IS_965(intelScreen->deviceID)) {
378	 return i915CreateContext(mesaVis, driContextPriv,
379				  sharedContextPrivate);
380      }
381   } else {
382      intelScreen->no_vbo = GL_TRUE;
383      return i830CreateContext(mesaVis, driContextPriv, sharedContextPrivate);
384   }
385#else
386   if (IS_965(intelScreen->deviceID))
387      return brwCreateContext(mesaVis, driContextPriv, sharedContextPrivate);
388#endif
389   fprintf(stderr, "Unrecognized deviceID %x\n", intelScreen->deviceID);
390   return GL_FALSE;
391}
392
393static GLboolean
394intel_init_bufmgr(struct intel_screen *intelScreen)
395{
396   __DRIscreen *spriv = intelScreen->driScrnPriv;
397   int num_fences = 0;
398
399   intelScreen->no_hw = getenv("INTEL_NO_HW") != NULL;
400
401   intelScreen->bufmgr = intel_bufmgr_gem_init(spriv->fd, BATCH_SZ);
402   /* Otherwise, use the classic buffer manager. */
403   if (intelScreen->bufmgr == NULL) {
404      fprintf(stderr, "[%s:%u] Error initializing buffer manager.\n",
405	      __func__, __LINE__);
406      return GL_FALSE;
407   }
408
409   if (!intel_get_param(spriv, I915_PARAM_NUM_FENCES_AVAIL, &num_fences) ||
410       num_fences == 0) {
411      fprintf(stderr, "[%s: %u] Kernel 2.6.29 required.\n", __func__, __LINE__);
412      return GL_FALSE;
413   }
414
415   drm_intel_bufmgr_gem_enable_fenced_relocs(intelScreen->bufmgr);
416
417   intelScreen->named_regions = _mesa_NewHashTable();
418
419   return GL_TRUE;
420}
421
422/**
423 * This is the driver specific part of the createNewScreen entry point.
424 * Called when using DRI2.
425 *
426 * \return the __GLcontextModes supported by this driver
427 */
428static const
429__DRIconfig **intelInitScreen2(__DRIscreen *psp)
430{
431   struct intel_screen *intelScreen;
432   GLenum fb_format[3];
433   GLenum fb_type[3];
434
435   static const GLenum back_buffer_modes[] = {
436       GLX_NONE, GLX_SWAP_UNDEFINED_OML, GLX_SWAP_COPY_OML
437   };
438   uint8_t depth_bits[4], stencil_bits[4], msaa_samples_array[1];
439   int color;
440   __DRIconfig **configs = NULL;
441
442   /* Allocate the private area */
443   intelScreen = CALLOC(sizeof *intelScreen);
444   if (!intelScreen) {
445      fprintf(stderr, "\nERROR!  Allocating private area failed\n");
446      return GL_FALSE;
447   }
448   /* parse information in __driConfigOptions */
449   driParseOptionInfo(&intelScreen->optionCache,
450                      __driConfigOptions, __driNConfigOptions);
451
452   intelScreen->driScrnPriv = psp;
453   psp->private = (void *) intelScreen;
454
455   /* Determine chipset ID */
456   if (!intel_get_param(psp, I915_PARAM_CHIPSET_ID,
457			&intelScreen->deviceID))
458      return GL_FALSE;
459
460   if (!intel_init_bufmgr(intelScreen))
461       return GL_FALSE;
462
463   psp->extensions = intelScreenExtensions;
464
465   msaa_samples_array[0] = 0;
466
467   fb_format[0] = GL_RGB;
468   fb_type[0] = GL_UNSIGNED_SHORT_5_6_5;
469
470   fb_format[1] = GL_BGR;
471   fb_type[1] = GL_UNSIGNED_INT_8_8_8_8_REV;
472
473   fb_format[2] = GL_BGRA;
474   fb_type[2] = GL_UNSIGNED_INT_8_8_8_8_REV;
475
476   depth_bits[0] = 0;
477   stencil_bits[0] = 0;
478
479   /* Generate a rich set of useful configs that do not include an
480    * accumulation buffer.
481    */
482   for (color = 0; color < ARRAY_SIZE(fb_format); color++) {
483      __DRIconfig **new_configs;
484      int depth_factor;
485
486      /* Starting with DRI2 protocol version 1.1 we can request a depth/stencil
487       * buffer that has a diffferent number of bits per pixel than the color
488       * buffer.  This isn't yet supported here.
489       */
490      if (fb_type[color] == GL_UNSIGNED_SHORT_5_6_5) {
491	 depth_bits[1] = 16;
492	 stencil_bits[1] = 0;
493      } else {
494	 depth_bits[1] = 24;
495	 stencil_bits[1] = 8;
496      }
497
498      depth_factor = 2;
499
500      new_configs = driCreateConfigs(fb_format[color], fb_type[color],
501				     depth_bits,
502				     stencil_bits,
503				     depth_factor,
504				     back_buffer_modes,
505				     ARRAY_SIZE(back_buffer_modes),
506				     msaa_samples_array,
507				     ARRAY_SIZE(msaa_samples_array),
508				     GL_FALSE);
509      if (configs == NULL)
510	 configs = new_configs;
511      else
512	 configs = driConcatConfigs(configs, new_configs);
513   }
514
515   /* Generate the minimum possible set of configs that include an
516    * accumulation buffer.
517    */
518   for (color = 0; color < ARRAY_SIZE(fb_format); color++) {
519      __DRIconfig **new_configs;
520
521      if (fb_type[color] == GL_UNSIGNED_SHORT_5_6_5) {
522	 depth_bits[0] = 16;
523	 stencil_bits[0] = 0;
524      } else {
525	 depth_bits[0] = 24;
526	 stencil_bits[0] = 8;
527      }
528
529      new_configs = driCreateConfigs(fb_format[color], fb_type[color],
530				     depth_bits, stencil_bits, 1,
531				     back_buffer_modes + 1, 1,
532				     msaa_samples_array, 1,
533				     GL_TRUE);
534      if (configs == NULL)
535	 configs = new_configs;
536      else
537	 configs = driConcatConfigs(configs, new_configs);
538   }
539
540   if (configs == NULL) {
541      fprintf(stderr, "[%s:%u] Error creating FBConfig!\n", __func__,
542              __LINE__);
543      return NULL;
544   }
545
546   return (const __DRIconfig **)configs;
547}
548
549const struct __DriverAPIRec driDriverAPI = {
550   .DestroyScreen	 = intelDestroyScreen,
551   .CreateContext	 = intelCreateContext,
552   .DestroyContext	 = intelDestroyContext,
553   .CreateBuffer	 = intelCreateBuffer,
554   .DestroyBuffer	 = intelDestroyBuffer,
555   .MakeCurrent		 = intelMakeCurrent,
556   .UnbindContext	 = intelUnbindContext,
557   .InitScreen2		 = intelInitScreen2,
558};
559
560/* This is the table of extensions that the loader will dlsym() for. */
561PUBLIC const __DRIextension *__driDriverExtensions[] = {
562    &driCoreExtension.base,
563    &driDRI2Extension.base,
564    NULL
565};
566