intel_screen.c revision e67c338b415c983bee570e6644b9684d8d1fc99b 
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   intel->need_throttle = GL_TRUE;
114
115   if (intel->batch->map != intel->batch->ptr)
116      intel_batchbuffer_flush(intel->batch);
117}
118
119static const struct __DRI2flushExtensionRec intelFlushExtension = {
120    { __DRI2_FLUSH, __DRI2_FLUSH_VERSION },
121    intelDRI2Flush,
122    dri2InvalidateDrawable,
123};
124
125static __DRIimage *
126intel_create_image_from_name(__DRIcontext *context,
127			     int width, int height, int format,
128			     int name, int pitch, void *loaderPrivate)
129{
130    __DRIimage *image;
131    struct intel_context *intel = context->driverPrivate;
132    int cpp;
133
134    image = CALLOC(sizeof *image);
135    if (image == NULL)
136	return NULL;
137
138    switch (format) {
139    case __DRI_IMAGE_FORMAT_RGB565:
140       image->format = MESA_FORMAT_RGB565;
141       image->internal_format = GL_RGB;
142       image->data_type = GL_UNSIGNED_BYTE;
143       break;
144    case __DRI_IMAGE_FORMAT_XRGB8888:
145       image->format = MESA_FORMAT_XRGB8888;
146       image->internal_format = GL_RGB;
147       image->data_type = GL_UNSIGNED_BYTE;
148       break;
149    case __DRI_IMAGE_FORMAT_ARGB8888:
150       image->format = MESA_FORMAT_ARGB8888;
151       image->internal_format = GL_RGBA;
152       image->data_type = GL_UNSIGNED_BYTE;
153       break;
154    default:
155       free(image);
156       return NULL;
157    }
158
159    image->data = loaderPrivate;
160    cpp = _mesa_get_format_bytes(image->format);
161
162    image->region = intel_region_alloc_for_handle(intel, cpp, width, height,
163						  pitch, name, "image");
164    if (image->region == NULL) {
165       FREE(image);
166       return NULL;
167    }
168
169    return image;
170}
171
172static __DRIimage *
173intel_create_image_from_renderbuffer(__DRIcontext *context,
174				     int renderbuffer, void *loaderPrivate)
175{
176   __DRIimage *image;
177   struct intel_context *intel = context->driverPrivate;
178   struct gl_renderbuffer *rb;
179   struct intel_renderbuffer *irb;
180
181   rb = _mesa_lookup_renderbuffer(&intel->ctx, renderbuffer);
182   if (!rb) {
183      _mesa_error(&intel->ctx,
184		  GL_INVALID_OPERATION, "glRenderbufferExternalMESA");
185      return NULL;
186   }
187
188   irb = intel_renderbuffer(rb);
189   image = CALLOC(sizeof *image);
190   if (image == NULL)
191      return NULL;
192
193   image->internal_format = rb->InternalFormat;
194   image->format = rb->Format;
195   image->data_type = rb->DataType;
196   image->data = loaderPrivate;
197   intel_region_reference(&image->region, irb->region);
198
199   return image;
200}
201
202static void
203intel_destroy_image(__DRIimage *image)
204{
205    intel_region_release(&image->region);
206    FREE(image);
207}
208
209static struct __DRIimageExtensionRec intelImageExtension = {
210    { __DRI_IMAGE, __DRI_IMAGE_VERSION },
211    intel_create_image_from_name,
212    intel_create_image_from_renderbuffer,
213    intel_destroy_image,
214};
215
216static const __DRIextension *intelScreenExtensions[] = {
217    &driReadDrawableExtension,
218    &intelTexBufferExtension.base,
219    &intelFlushExtension.base,
220    &intelImageExtension.base,
221    &dri2ConfigQueryExtension.base,
222    NULL
223};
224
225static GLboolean
226intel_get_param(__DRIscreen *psp, int param, int *value)
227{
228   int ret;
229   struct drm_i915_getparam gp;
230
231   gp.param = param;
232   gp.value = value;
233
234   ret = drmCommandWriteRead(psp->fd, DRM_I915_GETPARAM, &gp, sizeof(gp));
235   if (ret) {
236      _mesa_warning(NULL, "drm_i915_getparam: %d", ret);
237      return GL_FALSE;
238   }
239
240   return GL_TRUE;
241}
242
243static void
244nop_callback(GLuint key, void *data, void *userData)
245{
246}
247
248static void
249intelDestroyScreen(__DRIscreen * sPriv)
250{
251   struct intel_screen *intelScreen = sPriv->private;
252
253   dri_bufmgr_destroy(intelScreen->bufmgr);
254   driDestroyOptionInfo(&intelScreen->optionCache);
255
256   /* Some regions may still have references to them at this point, so
257    * flush the hash table to prevent _mesa_DeleteHashTable() from
258    * complaining about the hash not being empty; */
259   _mesa_HashDeleteAll(intelScreen->named_regions, nop_callback, NULL);
260   _mesa_DeleteHashTable(intelScreen->named_regions);
261
262   FREE(intelScreen);
263   sPriv->private = NULL;
264}
265
266
267/**
268 * This is called when we need to set up GL rendering to a new X window.
269 */
270static GLboolean
271intelCreateBuffer(__DRIscreen * driScrnPriv,
272                  __DRIdrawable * driDrawPriv,
273                  const __GLcontextModes * mesaVis, GLboolean isPixmap)
274{
275   struct intel_renderbuffer *rb;
276
277   if (isPixmap) {
278      return GL_FALSE;          /* not implemented */
279   }
280   else {
281      GLboolean swStencil = (mesaVis->stencilBits > 0 &&
282                             mesaVis->depthBits != 24);
283      gl_format rgbFormat;
284
285      struct gl_framebuffer *fb = CALLOC_STRUCT(gl_framebuffer);
286
287      if (!fb)
288	 return GL_FALSE;
289
290      _mesa_initialize_window_framebuffer(fb, mesaVis);
291
292      if (mesaVis->redBits == 5)
293	 rgbFormat = MESA_FORMAT_RGB565;
294      else if (mesaVis->alphaBits == 0)
295	 rgbFormat = MESA_FORMAT_XRGB8888;
296      else
297	 rgbFormat = MESA_FORMAT_ARGB8888;
298
299      /* setup the hardware-based renderbuffers */
300      rb = intel_create_renderbuffer(rgbFormat);
301      _mesa_add_renderbuffer(fb, BUFFER_FRONT_LEFT, &rb->Base);
302
303      if (mesaVis->doubleBufferMode) {
304	 rb = intel_create_renderbuffer(rgbFormat);
305         _mesa_add_renderbuffer(fb, BUFFER_BACK_LEFT, &rb->Base);
306      }
307
308      if (mesaVis->depthBits == 24) {
309	 assert(mesaVis->stencilBits == 8);
310	 /* combined depth/stencil buffer */
311	 struct intel_renderbuffer *depthStencilRb
312	    = intel_create_renderbuffer(MESA_FORMAT_S8_Z24);
313	 /* note: bind RB to two attachment points */
314	 _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &depthStencilRb->Base);
315	 _mesa_add_renderbuffer(fb, BUFFER_STENCIL, &depthStencilRb->Base);
316      }
317      else if (mesaVis->depthBits == 16) {
318         /* just 16-bit depth buffer, no hw stencil */
319         struct intel_renderbuffer *depthRb
320	    = intel_create_renderbuffer(MESA_FORMAT_Z16);
321         _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &depthRb->Base);
322      }
323
324      /* now add any/all software-based renderbuffers we may need */
325      _mesa_add_soft_renderbuffers(fb,
326                                   GL_FALSE, /* never sw color */
327                                   GL_FALSE, /* never sw depth */
328                                   swStencil, mesaVis->accumRedBits > 0,
329                                   GL_FALSE, /* never sw alpha */
330                                   GL_FALSE  /* never sw aux */ );
331      driDrawPriv->driverPrivate = fb;
332
333      return GL_TRUE;
334   }
335}
336
337static void
338intelDestroyBuffer(__DRIdrawable * driDrawPriv)
339{
340    struct gl_framebuffer *fb = driDrawPriv->driverPrivate;
341
342    _mesa_reference_framebuffer(&fb, NULL);
343}
344
345/* There are probably better ways to do this, such as an
346 * init-designated function to register chipids and createcontext
347 * functions.
348 */
349extern GLboolean i830CreateContext(const __GLcontextModes * mesaVis,
350                                   __DRIcontext * driContextPriv,
351                                   void *sharedContextPrivate);
352
353extern GLboolean i915CreateContext(int api,
354				   const __GLcontextModes * mesaVis,
355                                   __DRIcontext * driContextPriv,
356                                   void *sharedContextPrivate);
357extern GLboolean brwCreateContext(int api,
358				  const __GLcontextModes * mesaVis,
359				  __DRIcontext * driContextPriv,
360				  void *sharedContextPrivate);
361
362static GLboolean
363intelCreateContext(gl_api api,
364		   const __GLcontextModes * mesaVis,
365                   __DRIcontext * driContextPriv,
366                   void *sharedContextPrivate)
367{
368   __DRIscreen *sPriv = driContextPriv->driScreenPriv;
369   struct intel_screen *intelScreen = sPriv->private;
370
371#ifdef I915
372   if (IS_9XX(intelScreen->deviceID)) {
373      if (!IS_965(intelScreen->deviceID)) {
374	 return i915CreateContext(api, mesaVis, driContextPriv,
375				  sharedContextPrivate);
376      }
377   } else {
378      intelScreen->no_vbo = GL_TRUE;
379      return i830CreateContext(mesaVis, driContextPriv, sharedContextPrivate);
380   }
381#else
382   if (IS_965(intelScreen->deviceID))
383      return brwCreateContext(api, mesaVis,
384			      driContextPriv, sharedContextPrivate);
385#endif
386   fprintf(stderr, "Unrecognized deviceID %x\n", intelScreen->deviceID);
387   return GL_FALSE;
388}
389
390static GLboolean
391intel_init_bufmgr(struct intel_screen *intelScreen)
392{
393   __DRIscreen *spriv = intelScreen->driScrnPriv;
394   int num_fences = 0;
395
396   intelScreen->no_hw = getenv("INTEL_NO_HW") != NULL;
397
398   intelScreen->bufmgr = intel_bufmgr_gem_init(spriv->fd, BATCH_SZ);
399   /* Otherwise, use the classic buffer manager. */
400   if (intelScreen->bufmgr == NULL) {
401      fprintf(stderr, "[%s:%u] Error initializing buffer manager.\n",
402	      __func__, __LINE__);
403      return GL_FALSE;
404   }
405
406   if (!intel_get_param(spriv, I915_PARAM_NUM_FENCES_AVAIL, &num_fences) ||
407       num_fences == 0) {
408      fprintf(stderr, "[%s: %u] Kernel 2.6.29 required.\n", __func__, __LINE__);
409      return GL_FALSE;
410   }
411
412   drm_intel_bufmgr_gem_enable_fenced_relocs(intelScreen->bufmgr);
413
414   intelScreen->named_regions = _mesa_NewHashTable();
415
416   return GL_TRUE;
417}
418
419/**
420 * This is the driver specific part of the createNewScreen entry point.
421 * Called when using DRI2.
422 *
423 * \return the __GLcontextModes supported by this driver
424 */
425static const
426__DRIconfig **intelInitScreen2(__DRIscreen *psp)
427{
428   struct intel_screen *intelScreen;
429   GLenum fb_format[3];
430   GLenum fb_type[3];
431   unsigned int api_mask;
432
433   static const GLenum back_buffer_modes[] = {
434       GLX_NONE, GLX_SWAP_UNDEFINED_OML, GLX_SWAP_COPY_OML
435   };
436   uint8_t depth_bits[4], stencil_bits[4], msaa_samples_array[1];
437   int color;
438   __DRIconfig **configs = NULL;
439
440   /* Allocate the private area */
441   intelScreen = CALLOC(sizeof *intelScreen);
442   if (!intelScreen) {
443      fprintf(stderr, "\nERROR!  Allocating private area failed\n");
444      return GL_FALSE;
445   }
446   /* parse information in __driConfigOptions */
447   driParseOptionInfo(&intelScreen->optionCache,
448                      __driConfigOptions, __driNConfigOptions);
449
450   intelScreen->driScrnPriv = psp;
451   psp->private = (void *) intelScreen;
452
453   /* Determine chipset ID */
454   if (!intel_get_param(psp, I915_PARAM_CHIPSET_ID,
455			&intelScreen->deviceID))
456      return GL_FALSE;
457
458   api_mask = (1 << __DRI_API_OPENGL);
459#if FEATURE_ES1
460   api_mask |= (1 << __DRI_API_GLES);
461#endif
462#if FEATURE_ES2
463   api_mask |= (1 << __DRI_API_GLES2);
464#endif
465
466   if (IS_9XX(intelScreen->deviceID) || IS_965(intelScreen->deviceID))
467      psp->api_mask = api_mask;
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