intel_screen.c revision c6ef705e414c8e93ee471f50d15ada3492a9b067 
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 void
117intelDRI2Flush(__DRIdrawable *drawable)
118{
119   struct intel_context *intel = drawable->driContextPriv->driverPrivate;
120
121   if (intel->gen < 4)
122      INTEL_FIREVERTICES(intel);
123
124   if (intel->batch->map != intel->batch->ptr)
125      intel_batchbuffer_flush(intel->batch);
126}
127
128static void
129intelDRI2FlushInvalidate(__DRIdrawable *drawable)
130{
131   intelDRI2Flush(drawable);
132   drawable->validBuffers = GL_FALSE;
133}
134
135static const struct __DRI2flushExtensionRec intelFlushExtension = {
136    { __DRI2_FLUSH, __DRI2_FLUSH_VERSION },
137    intelDRI2Flush,
138    intelDRI2FlushInvalidate,
139};
140
141static const __DRIextension *intelScreenExtensions[] = {
142    &driReadDrawableExtension,
143    &intelTexOffsetExtension.base,
144    &intelTexBufferExtension.base,
145    &intelFlushExtension.base,
146    NULL
147};
148
149static GLboolean
150intel_get_param(__DRIscreen *psp, int param, int *value)
151{
152   int ret;
153   struct drm_i915_getparam gp;
154
155   gp.param = param;
156   gp.value = value;
157
158   ret = drmCommandWriteRead(psp->fd, DRM_I915_GETPARAM, &gp, sizeof(gp));
159   if (ret) {
160      _mesa_warning(NULL, "drm_i915_getparam: %d", ret);
161      return GL_FALSE;
162   }
163
164   return GL_TRUE;
165}
166
167static void
168intelDestroyScreen(__DRIscreen * sPriv)
169{
170   intelScreenPrivate *intelScreen = (intelScreenPrivate *) sPriv->private;
171
172   dri_bufmgr_destroy(intelScreen->bufmgr);
173   driDestroyOptionInfo(&intelScreen->optionCache);
174
175   FREE(intelScreen);
176   sPriv->private = NULL;
177}
178
179
180/**
181 * This is called when we need to set up GL rendering to a new X window.
182 */
183static GLboolean
184intelCreateBuffer(__DRIscreen * driScrnPriv,
185                  __DRIdrawable * driDrawPriv,
186                  const __GLcontextModes * mesaVis, GLboolean isPixmap)
187{
188   struct intel_renderbuffer *rb;
189
190   if (isPixmap) {
191      return GL_FALSE;          /* not implemented */
192   }
193   else {
194      GLboolean swStencil = (mesaVis->stencilBits > 0 &&
195                             mesaVis->depthBits != 24);
196      gl_format rgbFormat;
197
198      struct gl_framebuffer *fb = CALLOC_STRUCT(gl_framebuffer);
199
200      if (!fb)
201	 return GL_FALSE;
202
203      _mesa_initialize_framebuffer(fb, mesaVis);
204
205      if (mesaVis->redBits == 5)
206	 rgbFormat = MESA_FORMAT_RGB565;
207      else if (mesaVis->alphaBits == 0)
208	 rgbFormat = MESA_FORMAT_XRGB8888;
209      else
210	 rgbFormat = MESA_FORMAT_ARGB8888;
211
212      /* setup the hardware-based renderbuffers */
213      rb = intel_create_renderbuffer(rgbFormat);
214      _mesa_add_renderbuffer(fb, BUFFER_FRONT_LEFT, &rb->Base);
215
216      if (mesaVis->doubleBufferMode) {
217	 rb = intel_create_renderbuffer(rgbFormat);
218         _mesa_add_renderbuffer(fb, BUFFER_BACK_LEFT, &rb->Base);
219      }
220
221      if (mesaVis->depthBits == 24) {
222	 if (mesaVis->stencilBits == 8) {
223	    /* combined depth/stencil buffer */
224	    struct intel_renderbuffer *depthStencilRb
225	       = intel_create_renderbuffer(MESA_FORMAT_S8_Z24);
226	    /* note: bind RB to two attachment points */
227	    _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &depthStencilRb->Base);
228	    _mesa_add_renderbuffer(fb, BUFFER_STENCIL, &depthStencilRb->Base);
229	 } else {
230	    struct intel_renderbuffer *depthRb
231	       = intel_create_renderbuffer(MESA_FORMAT_X8_Z24);
232	    _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &depthRb->Base);
233	 }
234      }
235      else if (mesaVis->depthBits == 16) {
236         /* just 16-bit depth buffer, no hw stencil */
237         struct intel_renderbuffer *depthRb
238	    = intel_create_renderbuffer(MESA_FORMAT_Z16);
239         _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &depthRb->Base);
240      }
241
242      /* now add any/all software-based renderbuffers we may need */
243      _mesa_add_soft_renderbuffers(fb,
244                                   GL_FALSE, /* never sw color */
245                                   GL_FALSE, /* never sw depth */
246                                   swStencil, mesaVis->accumRedBits > 0,
247                                   GL_FALSE, /* never sw alpha */
248                                   GL_FALSE  /* never sw aux */ );
249      driDrawPriv->driverPrivate = fb;
250
251      return GL_TRUE;
252   }
253}
254
255static void
256intelDestroyBuffer(__DRIdrawable * driDrawPriv)
257{
258    struct gl_framebuffer *fb = driDrawPriv->driverPrivate;
259
260    _mesa_reference_framebuffer(&fb, NULL);
261}
262
263/* There are probably better ways to do this, such as an
264 * init-designated function to register chipids and createcontext
265 * functions.
266 */
267extern GLboolean i830CreateContext(const __GLcontextModes * mesaVis,
268                                   __DRIcontext * driContextPriv,
269                                   void *sharedContextPrivate);
270
271extern GLboolean i915CreateContext(const __GLcontextModes * mesaVis,
272                                   __DRIcontext * driContextPriv,
273                                   void *sharedContextPrivate);
274extern GLboolean brwCreateContext(const __GLcontextModes * mesaVis,
275				  __DRIcontext * driContextPriv,
276				  void *sharedContextPrivate);
277
278static GLboolean
279intelCreateContext(const __GLcontextModes * mesaVis,
280                   __DRIcontext * driContextPriv,
281                   void *sharedContextPrivate)
282{
283   __DRIscreen *sPriv = driContextPriv->driScreenPriv;
284   intelScreenPrivate *intelScreen = (intelScreenPrivate *) sPriv->private;
285
286#ifdef I915
287   if (IS_9XX(intelScreen->deviceID)) {
288      if (!IS_965(intelScreen->deviceID)) {
289	 return i915CreateContext(mesaVis, driContextPriv,
290				  sharedContextPrivate);
291      }
292   } else {
293      intelScreen->no_vbo = GL_TRUE;
294      return i830CreateContext(mesaVis, driContextPriv, sharedContextPrivate);
295   }
296#else
297   if (IS_965(intelScreen->deviceID))
298      return brwCreateContext(mesaVis, driContextPriv, sharedContextPrivate);
299#endif
300   fprintf(stderr, "Unrecognized deviceID %x\n", intelScreen->deviceID);
301   return GL_FALSE;
302}
303
304static GLboolean
305intel_init_bufmgr(intelScreenPrivate *intelScreen)
306{
307   __DRIscreen *spriv = intelScreen->driScrnPriv;
308   int num_fences = 0;
309
310   intelScreen->no_hw = getenv("INTEL_NO_HW") != NULL;
311
312   intelScreen->bufmgr = intel_bufmgr_gem_init(spriv->fd, BATCH_SZ);
313   /* Otherwise, use the classic buffer manager. */
314   if (intelScreen->bufmgr == NULL) {
315      fprintf(stderr, "[%s:%u] Error initializing buffer manager.\n",
316	      __func__, __LINE__);
317      return GL_FALSE;
318   }
319
320   if (intel_get_param(spriv, I915_PARAM_NUM_FENCES_AVAIL, &num_fences))
321      intelScreen->kernel_exec_fencing = !!num_fences;
322   else
323      intelScreen->kernel_exec_fencing = GL_FALSE;
324
325   return GL_TRUE;
326}
327
328/**
329 * This is the driver specific part of the createNewScreen entry point.
330 * Called when using DRI2.
331 *
332 * \return the __GLcontextModes supported by this driver
333 */
334static const
335__DRIconfig **intelInitScreen2(__DRIscreen *psp)
336{
337   intelScreenPrivate *intelScreen;
338   GLenum fb_format[3];
339   GLenum fb_type[3];
340
341   static const GLenum back_buffer_modes[] = {
342       GLX_NONE, GLX_SWAP_UNDEFINED_OML,
343       GLX_SWAP_EXCHANGE_OML, GLX_SWAP_COPY_OML
344   };
345   uint8_t depth_bits[4], stencil_bits[4], msaa_samples_array[1];
346   int color;
347   __DRIconfig **configs = NULL;
348
349   /* Allocate the private area */
350   intelScreen = (intelScreenPrivate *) CALLOC(sizeof(intelScreenPrivate));
351   if (!intelScreen) {
352      fprintf(stderr, "\nERROR!  Allocating private area failed\n");
353      return GL_FALSE;
354   }
355   /* parse information in __driConfigOptions */
356   driParseOptionInfo(&intelScreen->optionCache,
357                      __driConfigOptions, __driNConfigOptions);
358
359   intelScreen->driScrnPriv = psp;
360   psp->private = (void *) intelScreen;
361
362   intelScreen->drmMinor = psp->drm_version.minor;
363
364   /* Determine chipset ID */
365   if (!intel_get_param(psp, I915_PARAM_CHIPSET_ID,
366			&intelScreen->deviceID))
367      return GL_FALSE;
368
369   if (!intel_init_bufmgr(intelScreen))
370       return GL_FALSE;
371
372   intelScreen->irq_active = 1;
373   psp->extensions = intelScreenExtensions;
374
375   depth_bits[0] = 0;
376   stencil_bits[0] = 0;
377   depth_bits[1] = 16;
378   stencil_bits[1] = 0;
379   depth_bits[2] = 24;
380   stencil_bits[2] = 0;
381   depth_bits[3] = 24;
382   stencil_bits[3] = 8;
383
384   msaa_samples_array[0] = 0;
385
386   fb_format[0] = GL_RGB;
387   fb_type[0] = GL_UNSIGNED_SHORT_5_6_5;
388
389   fb_format[1] = GL_BGR;
390   fb_type[1] = GL_UNSIGNED_INT_8_8_8_8_REV;
391
392   fb_format[2] = GL_BGRA;
393   fb_type[2] = GL_UNSIGNED_INT_8_8_8_8_REV;
394
395   depth_bits[0] = 0;
396   stencil_bits[0] = 0;
397
398   for (color = 0; color < ARRAY_SIZE(fb_format); color++) {
399      __DRIconfig **new_configs;
400      int depth_factor;
401
402      /* With DRI2 right now, GetBuffers always returns a depth/stencil buffer
403       * with the same cpp as the drawable.  So we can't support depth cpp !=
404       * color cpp currently.
405       */
406      if (fb_type[color] == GL_UNSIGNED_SHORT_5_6_5) {
407	 depth_bits[1] = 16;
408	 stencil_bits[1] = 0;
409
410	 depth_factor = 2;
411      } else {
412	 depth_bits[1] = 24;
413	 stencil_bits[1] = 0;
414	 depth_bits[2] = 24;
415	 stencil_bits[2] = 8;
416
417	 depth_factor = 3;
418      }
419      new_configs = driCreateConfigs(fb_format[color], fb_type[color],
420				     depth_bits,
421				     stencil_bits,
422				     depth_factor,
423				     back_buffer_modes,
424				     ARRAY_SIZE(back_buffer_modes),
425				     msaa_samples_array,
426				     ARRAY_SIZE(msaa_samples_array));
427      if (configs == NULL)
428	 configs = new_configs;
429      else
430	 configs = driConcatConfigs(configs, new_configs);
431   }
432
433   if (configs == NULL) {
434      fprintf(stderr, "[%s:%u] Error creating FBConfig!\n", __func__,
435              __LINE__);
436      return NULL;
437   }
438
439   return (const __DRIconfig **)configs;
440}
441
442const struct __DriverAPIRec driDriverAPI = {
443   .DestroyScreen	 = intelDestroyScreen,
444   .CreateContext	 = intelCreateContext,
445   .DestroyContext	 = intelDestroyContext,
446   .CreateBuffer	 = intelCreateBuffer,
447   .DestroyBuffer	 = intelDestroyBuffer,
448   .MakeCurrent		 = intelMakeCurrent,
449   .UnbindContext	 = intelUnbindContext,
450   .InitScreen2		 = intelInitScreen2,
451};
452
453/* This is the table of extensions that the loader will dlsym() for. */
454PUBLIC const __DRIextension *__driDriverExtensions[] = {
455    &driCoreExtension.base,
456    &driDRI2Extension.base,
457    NULL
458};
459