intel_screen.c revision 8e7a8d65931a650534e0f5c4e0d8118cd6f7636e 
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 __DRItexOffsetExtension intelTexOffsetExtension = {
100   { __DRI_TEX_OFFSET },
101   intelSetTexOffset,
102};
103
104static const __DRItexBufferExtension intelTexBufferExtension = {
105    { __DRI_TEX_BUFFER, __DRI_TEX_BUFFER_VERSION },
106   intelSetTexBuffer,
107   intelSetTexBuffer2,
108};
109
110static void
111intelDRI2Flush(__DRIdrawable *drawable)
112{
113   struct intel_context *intel = drawable->driContextPriv->driverPrivate;
114
115   if (intel->gen < 4)
116      INTEL_FIREVERTICES(intel);
117
118   if (intel->batch->map != intel->batch->ptr)
119      intel_batchbuffer_flush(intel->batch);
120}
121
122static void
123intelDRI2Invalidate(__DRIdrawable *drawable)
124{
125   struct intel_context *intel = drawable->driContextPriv->driverPrivate;
126
127   intel->using_dri2_swapbuffers = GL_TRUE;
128   dri2InvalidateDrawable(drawable);
129}
130
131static const struct __DRI2flushExtensionRec intelFlushExtension = {
132    { __DRI2_FLUSH, __DRI2_FLUSH_VERSION },
133    intelDRI2Flush,
134    intelDRI2Invalidate,
135};
136
137static __DRIimage *
138intel_create_image_from_name(__DRIcontext *context,
139			     int width, int height, int format,
140			     int name, int pitch, void *loaderPrivate)
141{
142    __DRIimage *image;
143    struct intel_context *intel = context->driverPrivate;
144    int cpp;
145
146    image = CALLOC(sizeof *image);
147    if (image == NULL)
148	return NULL;
149
150    switch (format) {
151    case __DRI_IMAGE_FORMAT_RGB565:
152       image->format = MESA_FORMAT_RGB565;
153       image->internal_format = GL_RGB;
154       image->data_type = GL_UNSIGNED_BYTE;
155       break;
156    case __DRI_IMAGE_FORMAT_XRGB8888:
157       image->format = MESA_FORMAT_XRGB8888;
158       image->internal_format = GL_RGB;
159       image->data_type = GL_UNSIGNED_BYTE;
160       break;
161    case __DRI_IMAGE_FORMAT_ARGB8888:
162       image->format = MESA_FORMAT_ARGB8888;
163       image->internal_format = GL_RGBA;
164       image->data_type = GL_UNSIGNED_BYTE;
165       break;
166    default:
167       free(image);
168       return NULL;
169    }
170
171    image->data = loaderPrivate;
172    cpp = _mesa_get_format_bytes(image->format);
173
174    image->region = intel_region_alloc_for_handle(intel, cpp, width, height,
175						  pitch, name, "image");
176    if (image->region == NULL) {
177       FREE(image);
178       return NULL;
179    }
180
181    return image;
182}
183
184static __DRIimage *
185intel_create_image_from_renderbuffer(__DRIcontext *context,
186				     int renderbuffer, void *loaderPrivate)
187{
188   __DRIimage *image;
189   struct intel_context *intel = context->driverPrivate;
190   struct gl_renderbuffer *rb;
191   struct intel_renderbuffer *irb;
192
193   rb = _mesa_lookup_renderbuffer(&intel->ctx, renderbuffer);
194   if (!rb) {
195      _mesa_error(&intel->ctx,
196		  GL_INVALID_OPERATION, "glRenderbufferExternalMESA");
197      return NULL;
198   }
199
200   irb = intel_renderbuffer(rb);
201   image = CALLOC(sizeof *image);
202   if (image == NULL)
203      return NULL;
204
205   image->internal_format = rb->InternalFormat;
206   image->format = rb->Format;
207   image->data_type = rb->DataType;
208   image->data = loaderPrivate;
209   intel_region_reference(&image->region, irb->region);
210
211   return image;
212}
213
214static void
215intel_destroy_image(__DRIimage *image)
216{
217    intel_region_release(&image->region);
218    FREE(image);
219}
220
221static struct __DRIimageExtensionRec intelImageExtension = {
222    { __DRI_IMAGE, __DRI_IMAGE_VERSION },
223    intel_create_image_from_name,
224    intel_create_image_from_renderbuffer,
225    intel_destroy_image,
226};
227
228static const __DRIextension *intelScreenExtensions[] = {
229    &driReadDrawableExtension,
230    &intelTexOffsetExtension.base,
231    &intelTexBufferExtension.base,
232    &intelFlushExtension.base,
233    &intelImageExtension.base,
234    NULL
235};
236
237static GLboolean
238intel_get_param(__DRIscreen *psp, int param, int *value)
239{
240   int ret;
241   struct drm_i915_getparam gp;
242
243   gp.param = param;
244   gp.value = value;
245
246   ret = drmCommandWriteRead(psp->fd, DRM_I915_GETPARAM, &gp, sizeof(gp));
247   if (ret) {
248      _mesa_warning(NULL, "drm_i915_getparam: %d", ret);
249      return GL_FALSE;
250   }
251
252   return GL_TRUE;
253}
254
255static void
256nop_callback(GLuint key, void *data, void *userData)
257{
258}
259
260static void
261intelDestroyScreen(__DRIscreen * sPriv)
262{
263   struct intel_screen *intelScreen = sPriv->private;
264
265   dri_bufmgr_destroy(intelScreen->bufmgr);
266   driDestroyOptionInfo(&intelScreen->optionCache);
267
268   /* Some regions may still have references to them at this point, so
269    * flush the hash table to prevent _mesa_DeleteHashTable() from
270    * complaining about the hash not being empty; */
271   _mesa_HashDeleteAll(intelScreen->named_regions, nop_callback, NULL);
272   _mesa_DeleteHashTable(intelScreen->named_regions);
273
274   FREE(intelScreen);
275   sPriv->private = NULL;
276}
277
278
279/**
280 * This is called when we need to set up GL rendering to a new X window.
281 */
282static GLboolean
283intelCreateBuffer(__DRIscreen * driScrnPriv,
284                  __DRIdrawable * driDrawPriv,
285                  const __GLcontextModes * mesaVis, GLboolean isPixmap)
286{
287   struct intel_renderbuffer *rb;
288
289   if (isPixmap) {
290      return GL_FALSE;          /* not implemented */
291   }
292   else {
293      GLboolean swStencil = (mesaVis->stencilBits > 0 &&
294                             mesaVis->depthBits != 24);
295      gl_format rgbFormat;
296
297      struct gl_framebuffer *fb = CALLOC_STRUCT(gl_framebuffer);
298
299      if (!fb)
300	 return GL_FALSE;
301
302      _mesa_initialize_window_framebuffer(fb, mesaVis);
303
304      if (mesaVis->redBits == 5)
305	 rgbFormat = MESA_FORMAT_RGB565;
306      else if (mesaVis->alphaBits == 0)
307	 rgbFormat = MESA_FORMAT_XRGB8888;
308      else
309	 rgbFormat = MESA_FORMAT_ARGB8888;
310
311      /* setup the hardware-based renderbuffers */
312      rb = intel_create_renderbuffer(rgbFormat);
313      _mesa_add_renderbuffer(fb, BUFFER_FRONT_LEFT, &rb->Base);
314
315      if (mesaVis->doubleBufferMode) {
316	 rb = intel_create_renderbuffer(rgbFormat);
317         _mesa_add_renderbuffer(fb, BUFFER_BACK_LEFT, &rb->Base);
318      }
319
320      if (mesaVis->depthBits == 24) {
321	 if (mesaVis->stencilBits == 8) {
322	    /* combined depth/stencil buffer */
323	    struct intel_renderbuffer *depthStencilRb
324	       = intel_create_renderbuffer(MESA_FORMAT_S8_Z24);
325	    /* note: bind RB to two attachment points */
326	    _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &depthStencilRb->Base);
327	    _mesa_add_renderbuffer(fb, BUFFER_STENCIL, &depthStencilRb->Base);
328	 } else {
329	    struct intel_renderbuffer *depthRb
330	       = intel_create_renderbuffer(MESA_FORMAT_X8_Z24);
331	    _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &depthRb->Base);
332	 }
333      }
334      else if (mesaVis->depthBits == 16) {
335         /* just 16-bit depth buffer, no hw stencil */
336         struct intel_renderbuffer *depthRb
337	    = intel_create_renderbuffer(MESA_FORMAT_Z16);
338         _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &depthRb->Base);
339      }
340
341      /* now add any/all software-based renderbuffers we may need */
342      _mesa_add_soft_renderbuffers(fb,
343                                   GL_FALSE, /* never sw color */
344                                   GL_FALSE, /* never sw depth */
345                                   swStencil, mesaVis->accumRedBits > 0,
346                                   GL_FALSE, /* never sw alpha */
347                                   GL_FALSE  /* never sw aux */ );
348      driDrawPriv->driverPrivate = fb;
349
350      return GL_TRUE;
351   }
352}
353
354static void
355intelDestroyBuffer(__DRIdrawable * driDrawPriv)
356{
357    struct gl_framebuffer *fb = driDrawPriv->driverPrivate;
358
359    _mesa_reference_framebuffer(&fb, NULL);
360}
361
362/* There are probably better ways to do this, such as an
363 * init-designated function to register chipids and createcontext
364 * functions.
365 */
366extern GLboolean i830CreateContext(const __GLcontextModes * mesaVis,
367                                   __DRIcontext * driContextPriv,
368                                   void *sharedContextPrivate);
369
370extern GLboolean i915CreateContext(const __GLcontextModes * mesaVis,
371                                   __DRIcontext * driContextPriv,
372                                   void *sharedContextPrivate);
373extern GLboolean brwCreateContext(const __GLcontextModes * mesaVis,
374				  __DRIcontext * driContextPriv,
375				  void *sharedContextPrivate);
376
377static GLboolean
378intelCreateContext(const __GLcontextModes * mesaVis,
379                   __DRIcontext * driContextPriv,
380                   void *sharedContextPrivate)
381{
382   __DRIscreen *sPriv = driContextPriv->driScreenPriv;
383   struct intel_screen *intelScreen = sPriv->private;
384
385#ifdef I915
386   if (IS_9XX(intelScreen->deviceID)) {
387      if (!IS_965(intelScreen->deviceID)) {
388	 return i915CreateContext(mesaVis, driContextPriv,
389				  sharedContextPrivate);
390      }
391   } else {
392      intelScreen->no_vbo = GL_TRUE;
393      return i830CreateContext(mesaVis, driContextPriv, sharedContextPrivate);
394   }
395#else
396   if (IS_965(intelScreen->deviceID))
397      return brwCreateContext(mesaVis, driContextPriv, sharedContextPrivate);
398#endif
399   fprintf(stderr, "Unrecognized deviceID %x\n", intelScreen->deviceID);
400   return GL_FALSE;
401}
402
403static GLboolean
404intel_init_bufmgr(struct intel_screen *intelScreen)
405{
406   __DRIscreen *spriv = intelScreen->driScrnPriv;
407   int num_fences = 0;
408
409   intelScreen->no_hw = getenv("INTEL_NO_HW") != NULL;
410
411   intelScreen->bufmgr = intel_bufmgr_gem_init(spriv->fd, BATCH_SZ);
412   /* Otherwise, use the classic buffer manager. */
413   if (intelScreen->bufmgr == NULL) {
414      fprintf(stderr, "[%s:%u] Error initializing buffer manager.\n",
415	      __func__, __LINE__);
416      return GL_FALSE;
417   }
418
419   if (intel_get_param(spriv, I915_PARAM_NUM_FENCES_AVAIL, &num_fences))
420      intelScreen->kernel_exec_fencing = !!num_fences;
421   else
422      intelScreen->kernel_exec_fencing = GL_FALSE;
423
424   drm_intel_bufmgr_gem_enable_fenced_relocs(intelScreen->bufmgr);
425
426   intelScreen->named_regions = _mesa_NewHashTable();
427
428   return GL_TRUE;
429}
430
431/**
432 * This is the driver specific part of the createNewScreen entry point.
433 * Called when using DRI2.
434 *
435 * \return the __GLcontextModes supported by this driver
436 */
437static const
438__DRIconfig **intelInitScreen2(__DRIscreen *psp)
439{
440   struct intel_screen *intelScreen;
441   GLenum fb_format[3];
442   GLenum fb_type[3];
443
444   static const GLenum back_buffer_modes[] = {
445       GLX_NONE, GLX_SWAP_UNDEFINED_OML, GLX_SWAP_COPY_OML
446   };
447   uint8_t depth_bits[4], stencil_bits[4], msaa_samples_array[1];
448   int color;
449   __DRIconfig **configs = NULL;
450
451   /* Allocate the private area */
452   intelScreen = CALLOC(sizeof *intelScreen);
453   if (!intelScreen) {
454      fprintf(stderr, "\nERROR!  Allocating private area failed\n");
455      return GL_FALSE;
456   }
457   /* parse information in __driConfigOptions */
458   driParseOptionInfo(&intelScreen->optionCache,
459                      __driConfigOptions, __driNConfigOptions);
460
461   intelScreen->driScrnPriv = psp;
462   psp->private = (void *) intelScreen;
463
464   /* Determine chipset ID */
465   if (!intel_get_param(psp, I915_PARAM_CHIPSET_ID,
466			&intelScreen->deviceID))
467      return GL_FALSE;
468
469   if (!intel_init_bufmgr(intelScreen))
470       return GL_FALSE;
471
472   psp->extensions = intelScreenExtensions;
473
474   msaa_samples_array[0] = 0;
475
476   fb_format[0] = GL_RGB;
477   fb_type[0] = GL_UNSIGNED_SHORT_5_6_5;
478
479   fb_format[1] = GL_BGR;
480   fb_type[1] = GL_UNSIGNED_INT_8_8_8_8_REV;
481
482   fb_format[2] = GL_BGRA;
483   fb_type[2] = GL_UNSIGNED_INT_8_8_8_8_REV;
484
485   depth_bits[0] = 0;
486   stencil_bits[0] = 0;
487
488   /* Generate a rich set of useful configs that do not include an
489    * accumulation buffer.
490    */
491   for (color = 0; color < ARRAY_SIZE(fb_format); color++) {
492      __DRIconfig **new_configs;
493      int depth_factor;
494
495      /* Starting with DRI2 protocol version 1.1 we can request a depth/stencil
496       * buffer that has a diffferent number of bits per pixel than the color
497       * buffer.  This isn't yet supported here.
498       */
499      if (fb_type[color] == GL_UNSIGNED_SHORT_5_6_5) {
500	 depth_bits[1] = 16;
501	 stencil_bits[1] = 0;
502      } else {
503	 depth_bits[1] = 24;
504	 stencil_bits[1] = 8;
505      }
506
507      depth_factor = 2;
508
509      new_configs = driCreateConfigs(fb_format[color], fb_type[color],
510				     depth_bits,
511				     stencil_bits,
512				     depth_factor,
513				     back_buffer_modes,
514				     ARRAY_SIZE(back_buffer_modes),
515				     msaa_samples_array,
516				     ARRAY_SIZE(msaa_samples_array),
517				     GL_FALSE);
518      if (configs == NULL)
519	 configs = new_configs;
520      else
521	 configs = driConcatConfigs(configs, new_configs);
522   }
523
524   /* Generate the minimum possible set of configs that include an
525    * accumulation buffer.
526    */
527   for (color = 0; color < ARRAY_SIZE(fb_format); color++) {
528      __DRIconfig **new_configs;
529
530      if (fb_type[color] == GL_UNSIGNED_SHORT_5_6_5) {
531	 depth_bits[0] = 16;
532	 stencil_bits[0] = 0;
533      } else {
534	 depth_bits[0] = 24;
535	 stencil_bits[0] = 8;
536      }
537
538      new_configs = driCreateConfigs(fb_format[color], fb_type[color],
539				     depth_bits, stencil_bits, 1,
540				     back_buffer_modes + 1, 1,
541				     msaa_samples_array, 1,
542				     GL_TRUE);
543      if (configs == NULL)
544	 configs = new_configs;
545      else
546	 configs = driConcatConfigs(configs, new_configs);
547   }
548
549   if (configs == NULL) {
550      fprintf(stderr, "[%s:%u] Error creating FBConfig!\n", __func__,
551              __LINE__);
552      return NULL;
553   }
554
555   return (const __DRIconfig **)configs;
556}
557
558const struct __DriverAPIRec driDriverAPI = {
559   .DestroyScreen	 = intelDestroyScreen,
560   .CreateContext	 = intelCreateContext,
561   .DestroyContext	 = intelDestroyContext,
562   .CreateBuffer	 = intelCreateBuffer,
563   .DestroyBuffer	 = intelDestroyBuffer,
564   .MakeCurrent		 = intelMakeCurrent,
565   .UnbindContext	 = intelUnbindContext,
566   .InitScreen2		 = intelInitScreen2,
567};
568
569/* This is the table of extensions that the loader will dlsym() for. */
570PUBLIC const __DRIextension *__driDriverExtensions[] = {
571    &driCoreExtension.base,
572    &driDRI2Extension.base,
573    NULL
574};
575