intel_screen.c revision d282128ff68cc58bc3f5b808031c5fe7325bd69b 
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
33#include "utils.h"
34#include "xmlpool.h"
35
36#include "intel_batchbuffer.h"
37#include "intel_buffers.h"
38#include "intel_bufmgr.h"
39#include "intel_chipset.h"
40#include "intel_extensions.h"
41#include "intel_fbo.h"
42#include "intel_regions.h"
43#include "intel_screen.h"
44#include "intel_span.h"
45#include "intel_tex.h"
46
47#include "i915_drm.h"
48#include "i830_dri.h"
49
50#define DRI_CONF_TEXTURE_TILING(def) \
51	DRI_CONF_OPT_BEGIN(texture_tiling, bool, def)		\
52		DRI_CONF_DESC(en, "Enable texture tiling")	\
53	DRI_CONF_OPT_END					\
54
55PUBLIC const char __driConfigOptions[] =
56   DRI_CONF_BEGIN
57   DRI_CONF_SECTION_PERFORMANCE
58      DRI_CONF_VBLANK_MODE(DRI_CONF_VBLANK_ALWAYS_SYNC)
59      /* Options correspond to DRI_CONF_BO_REUSE_DISABLED,
60       * DRI_CONF_BO_REUSE_ALL
61       */
62      DRI_CONF_OPT_BEGIN_V(bo_reuse, enum, 1, "0:1")
63	 DRI_CONF_DESC_BEGIN(en, "Buffer object reuse")
64	    DRI_CONF_ENUM(0, "Disable buffer object reuse")
65	    DRI_CONF_ENUM(1, "Enable reuse of all sizes of buffer objects")
66	 DRI_CONF_DESC_END
67      DRI_CONF_OPT_END
68
69#ifdef I915
70     DRI_CONF_TEXTURE_TILING(false)
71#else
72     DRI_CONF_TEXTURE_TILING(true)
73#endif
74
75      DRI_CONF_OPT_BEGIN(early_z, bool, false)
76	 DRI_CONF_DESC(en, "Enable early Z in classic mode (unstable, 945-only).")
77      DRI_CONF_OPT_END
78
79      DRI_CONF_OPT_BEGIN(fragment_shader, bool, false)
80	 DRI_CONF_DESC(en, "Enable limited ARB_fragment_shader support on 915/945.")
81      DRI_CONF_OPT_END
82
83   DRI_CONF_SECTION_END
84   DRI_CONF_SECTION_QUALITY
85      DRI_CONF_FORCE_S3TC_ENABLE(false)
86      DRI_CONF_ALLOW_LARGE_TEXTURES(2)
87   DRI_CONF_SECTION_END
88   DRI_CONF_SECTION_DEBUG
89     DRI_CONF_NO_RAST(false)
90     DRI_CONF_ALWAYS_FLUSH_BATCH(false)
91     DRI_CONF_ALWAYS_FLUSH_CACHE(false)
92
93      DRI_CONF_OPT_BEGIN(stub_occlusion_query, bool, false)
94	 DRI_CONF_DESC(en, "Enable stub ARB_occlusion_query support on 915/945.")
95      DRI_CONF_OPT_END
96   DRI_CONF_SECTION_END
97DRI_CONF_END;
98
99const GLuint __driNConfigOptions = 11;
100
101#ifdef USE_NEW_INTERFACE
102static PFNGLXCREATECONTEXTMODES create_context_modes = NULL;
103#endif /*USE_NEW_INTERFACE */
104
105static const __DRItexOffsetExtension intelTexOffsetExtension = {
106   { __DRI_TEX_OFFSET },
107   intelSetTexOffset,
108};
109
110static const __DRItexBufferExtension intelTexBufferExtension = {
111    { __DRI_TEX_BUFFER, __DRI_TEX_BUFFER_VERSION },
112   intelSetTexBuffer,
113   intelSetTexBuffer2,
114};
115
116static const __DRIextension *intelScreenExtensions[] = {
117    &driReadDrawableExtension,
118    &intelTexOffsetExtension.base,
119    &intelTexBufferExtension.base,
120    NULL
121};
122
123static GLboolean
124intel_get_param(__DRIscreen *psp, int param, int *value)
125{
126   int ret;
127   struct drm_i915_getparam gp;
128
129   gp.param = param;
130   gp.value = value;
131
132   ret = drmCommandWriteRead(psp->fd, DRM_I915_GETPARAM, &gp, sizeof(gp));
133   if (ret) {
134      _mesa_warning(NULL, "drm_i915_getparam: %d", ret);
135      return GL_FALSE;
136   }
137
138   return GL_TRUE;
139}
140
141static void
142intelDestroyScreen(__DRIscreen * sPriv)
143{
144   intelScreenPrivate *intelScreen = (intelScreenPrivate *) sPriv->private;
145
146   dri_bufmgr_destroy(intelScreen->bufmgr);
147   driDestroyOptionInfo(&intelScreen->optionCache);
148
149   FREE(intelScreen);
150   sPriv->private = NULL;
151}
152
153
154/**
155 * This is called when we need to set up GL rendering to a new X window.
156 */
157static GLboolean
158intelCreateBuffer(__DRIscreen * driScrnPriv,
159                  __DRIdrawable * driDrawPriv,
160                  const __GLcontextModes * mesaVis, GLboolean isPixmap)
161{
162   struct intel_renderbuffer *rb;
163
164   if (isPixmap) {
165      return GL_FALSE;          /* not implemented */
166   }
167   else {
168      GLboolean swStencil = (mesaVis->stencilBits > 0 &&
169                             mesaVis->depthBits != 24);
170      gl_format rgbFormat;
171
172      struct gl_framebuffer *fb = CALLOC_STRUCT(gl_framebuffer);
173
174      if (!fb)
175	 return GL_FALSE;
176
177      _mesa_initialize_framebuffer(fb, mesaVis);
178
179      if (mesaVis->redBits == 5)
180	 rgbFormat = MESA_FORMAT_RGB565;
181      else if (mesaVis->alphaBits == 0)
182	 rgbFormat = MESA_FORMAT_XRGB8888;
183      else
184	 rgbFormat = MESA_FORMAT_ARGB8888;
185
186      /* setup the hardware-based renderbuffers */
187      rb = intel_create_renderbuffer(rgbFormat);
188      _mesa_add_renderbuffer(fb, BUFFER_FRONT_LEFT, &rb->Base);
189
190      if (mesaVis->doubleBufferMode) {
191	 rb = intel_create_renderbuffer(rgbFormat);
192         _mesa_add_renderbuffer(fb, BUFFER_BACK_LEFT, &rb->Base);
193      }
194
195      if (mesaVis->depthBits == 24) {
196	 if (mesaVis->stencilBits == 8) {
197	    /* combined depth/stencil buffer */
198	    struct intel_renderbuffer *depthStencilRb
199	       = intel_create_renderbuffer(MESA_FORMAT_S8_Z24);
200	    /* note: bind RB to two attachment points */
201	    _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &depthStencilRb->Base);
202	    _mesa_add_renderbuffer(fb, BUFFER_STENCIL, &depthStencilRb->Base);
203	 } else {
204	    struct intel_renderbuffer *depthRb
205	       = intel_create_renderbuffer(MESA_FORMAT_X8_Z24);
206	    _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &depthRb->Base);
207	 }
208      }
209      else if (mesaVis->depthBits == 16) {
210         /* just 16-bit depth buffer, no hw stencil */
211         struct intel_renderbuffer *depthRb
212	    = intel_create_renderbuffer(MESA_FORMAT_Z16);
213         _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &depthRb->Base);
214      }
215
216      /* now add any/all software-based renderbuffers we may need */
217      _mesa_add_soft_renderbuffers(fb,
218                                   GL_FALSE, /* never sw color */
219                                   GL_FALSE, /* never sw depth */
220                                   swStencil, mesaVis->accumRedBits > 0,
221                                   GL_FALSE, /* never sw alpha */
222                                   GL_FALSE  /* never sw aux */ );
223      driDrawPriv->driverPrivate = fb;
224
225      return GL_TRUE;
226   }
227}
228
229static void
230intelDestroyBuffer(__DRIdrawable * driDrawPriv)
231{
232    struct gl_framebuffer *fb = driDrawPriv->driverPrivate;
233
234    _mesa_reference_framebuffer(&fb, NULL);
235}
236
237/* There are probably better ways to do this, such as an
238 * init-designated function to register chipids and createcontext
239 * functions.
240 */
241extern GLboolean i830CreateContext(const __GLcontextModes * mesaVis,
242                                   __DRIcontext * driContextPriv,
243                                   void *sharedContextPrivate);
244
245extern GLboolean i915CreateContext(const __GLcontextModes * mesaVis,
246                                   __DRIcontext * driContextPriv,
247                                   void *sharedContextPrivate);
248extern GLboolean brwCreateContext(const __GLcontextModes * mesaVis,
249				  __DRIcontext * driContextPriv,
250				  void *sharedContextPrivate);
251
252static GLboolean
253intelCreateContext(const __GLcontextModes * mesaVis,
254                   __DRIcontext * driContextPriv,
255                   void *sharedContextPrivate)
256{
257   __DRIscreen *sPriv = driContextPriv->driScreenPriv;
258   intelScreenPrivate *intelScreen = (intelScreenPrivate *) sPriv->private;
259
260#ifdef I915
261   if (IS_9XX(intelScreen->deviceID)) {
262      if (!IS_965(intelScreen->deviceID)) {
263	 return i915CreateContext(mesaVis, driContextPriv,
264				  sharedContextPrivate);
265      }
266   } else {
267      intelScreen->no_vbo = GL_TRUE;
268      return i830CreateContext(mesaVis, driContextPriv, sharedContextPrivate);
269   }
270#else
271   if (IS_965(intelScreen->deviceID))
272      return brwCreateContext(mesaVis, driContextPriv, sharedContextPrivate);
273#endif
274   fprintf(stderr, "Unrecognized deviceID %x\n", intelScreen->deviceID);
275   return GL_FALSE;
276}
277
278static GLboolean
279intel_init_bufmgr(intelScreenPrivate *intelScreen)
280{
281   int gem_kernel = 0;
282   struct drm_i915_getparam gp;
283   __DRIscreen *spriv = intelScreen->driScrnPriv;
284   int num_fences = 0;
285
286   intelScreen->no_hw = getenv("INTEL_NO_HW") != NULL;
287
288   gp.param = I915_PARAM_HAS_GEM;
289   gp.value = &gem_kernel;
290
291   (void) drmCommandWriteRead(spriv->fd, DRM_I915_GETPARAM, &gp, sizeof(gp));
292
293   /* If we've got a new enough DDX that's initializing GEM and giving us
294    * object handles for the shared buffers, use that.
295    */
296   if (!intelScreen->driScrnPriv->dri2.enabled &&
297       intelScreen->driScrnPriv->ddx_version.minor < 9) {
298      fprintf(stderr, "[%s:%u] Error initializing GEM.\n",
299	      __func__, __LINE__);
300      return GL_FALSE;
301   }
302
303   intelScreen->bufmgr = intel_bufmgr_gem_init(spriv->fd, BATCH_SZ);
304   /* Otherwise, use the classic buffer manager. */
305   if (intelScreen->bufmgr == NULL) {
306      fprintf(stderr, "[%s:%u] Error initializing buffer manager.\n",
307	      __func__, __LINE__);
308      return GL_FALSE;
309   }
310
311   if (intel_get_param(spriv, I915_PARAM_NUM_FENCES_AVAIL, &num_fences))
312      intelScreen->kernel_exec_fencing = !!num_fences;
313   else
314      intelScreen->kernel_exec_fencing = GL_FALSE;
315
316   return GL_TRUE;
317}
318
319struct intel_context *intelScreenContext(intelScreenPrivate *intelScreen)
320{
321  /*
322   * This should probably change to have the screen allocate a dummy
323   * context at screen creation. For now just use the current context.
324   */
325
326  GET_CURRENT_CONTEXT(ctx);
327  if (ctx == NULL) {
328     _mesa_problem(NULL, "No current context in intelScreenContext\n");
329     return NULL;
330  }
331  return intel_context(ctx);
332}
333
334/**
335 * This is the driver specific part of the createNewScreen entry point.
336 * Called when using DRI2.
337 *
338 * \return the __GLcontextModes supported by this driver
339 */
340static const
341__DRIconfig **intelInitScreen2(__DRIscreen *psp)
342{
343   intelScreenPrivate *intelScreen;
344   GLenum fb_format[3];
345   GLenum fb_type[3];
346   /* GLX_SWAP_COPY_OML is only supported because the Intel driver doesn't
347    * support pageflipping at all.
348    */
349   static const GLenum back_buffer_modes[] = {
350      GLX_NONE, GLX_SWAP_UNDEFINED_OML, GLX_SWAP_COPY_OML
351   };
352   uint8_t depth_bits[4], stencil_bits[4], msaa_samples_array[1];
353   int color;
354   __DRIconfig **configs = NULL;
355
356   /* Allocate the private area */
357   intelScreen = (intelScreenPrivate *) CALLOC(sizeof(intelScreenPrivate));
358   if (!intelScreen) {
359      fprintf(stderr, "\nERROR!  Allocating private area failed\n");
360      return GL_FALSE;
361   }
362   /* parse information in __driConfigOptions */
363   driParseOptionInfo(&intelScreen->optionCache,
364                      __driConfigOptions, __driNConfigOptions);
365
366   intelScreen->driScrnPriv = psp;
367   psp->private = (void *) intelScreen;
368
369   intelScreen->drmMinor = psp->drm_version.minor;
370
371   /* Determine chipset ID */
372   if (!intel_get_param(psp, I915_PARAM_CHIPSET_ID,
373			&intelScreen->deviceID))
374      return GL_FALSE;
375
376   if (!intel_init_bufmgr(intelScreen))
377       return GL_FALSE;
378
379   intelScreen->irq_active = 1;
380   psp->extensions = intelScreenExtensions;
381
382   depth_bits[0] = 0;
383   stencil_bits[0] = 0;
384   depth_bits[1] = 16;
385   stencil_bits[1] = 0;
386   depth_bits[2] = 24;
387   stencil_bits[2] = 0;
388   depth_bits[3] = 24;
389   stencil_bits[3] = 8;
390
391   msaa_samples_array[0] = 0;
392
393   fb_format[0] = GL_RGB;
394   fb_type[0] = GL_UNSIGNED_SHORT_5_6_5;
395
396   fb_format[1] = GL_BGR;
397   fb_type[1] = GL_UNSIGNED_INT_8_8_8_8_REV;
398
399   fb_format[2] = GL_BGRA;
400   fb_type[2] = GL_UNSIGNED_INT_8_8_8_8_REV;
401
402   depth_bits[0] = 0;
403   stencil_bits[0] = 0;
404
405   for (color = 0; color < ARRAY_SIZE(fb_format); color++) {
406      __DRIconfig **new_configs;
407      int depth_factor;
408
409      /* With DRI2 right now, GetBuffers always returns a depth/stencil buffer
410       * with the same cpp as the drawable.  So we can't support depth cpp !=
411       * color cpp currently.
412       */
413      if (fb_type[color] == GL_UNSIGNED_SHORT_5_6_5) {
414	 depth_bits[1] = 16;
415	 stencil_bits[1] = 0;
416
417	 depth_factor = 2;
418      } else {
419	 depth_bits[1] = 24;
420	 stencil_bits[1] = 0;
421	 depth_bits[2] = 24;
422	 stencil_bits[2] = 8;
423
424	 depth_factor = 3;
425      }
426      new_configs = driCreateConfigs(fb_format[color], fb_type[color],
427				     depth_bits,
428				     stencil_bits,
429				     depth_factor,
430				     back_buffer_modes,
431				     ARRAY_SIZE(back_buffer_modes),
432				     msaa_samples_array,
433				     ARRAY_SIZE(msaa_samples_array));
434      if (configs == NULL)
435	 configs = new_configs;
436      else
437	 configs = driConcatConfigs(configs, new_configs);
438   }
439
440   if (configs == NULL) {
441      fprintf(stderr, "[%s:%u] Error creating FBConfig!\n", __func__,
442              __LINE__);
443      return NULL;
444   }
445
446   return (const __DRIconfig **)configs;
447}
448
449const struct __DriverAPIRec driDriverAPI = {
450   .DestroyScreen	 = intelDestroyScreen,
451   .CreateContext	 = intelCreateContext,
452   .DestroyContext	 = intelDestroyContext,
453   .CreateBuffer	 = intelCreateBuffer,
454   .DestroyBuffer	 = intelDestroyBuffer,
455   .MakeCurrent		 = intelMakeCurrent,
456   .UnbindContext	 = intelUnbindContext,
457   .InitScreen2		 = intelInitScreen2,
458};
459
460/* This is the table of extensions that the loader will dlsym() for. */
461PUBLIC const __DRIextension *__driDriverExtensions[] = {
462    &driCoreExtension.base,
463    &driDRI2Extension.base,
464    NULL
465};
466