i915_screen.c revision cab2fed135bc1edf7b65ddca3236020638427061 
1/**************************************************************************
2 *
3 * Copyright 2008 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
29#include "draw/draw_context.h"
30#include "util/u_format.h"
31#include "util/u_format_s3tc.h"
32#include "util/u_inlines.h"
33#include "util/u_memory.h"
34#include "util/u_string.h"
35
36#include "i915_reg.h"
37#include "i915_debug.h"
38#include "i915_context.h"
39#include "i915_screen.h"
40#include "i915_resource.h"
41#include "i915_winsys.h"
42#include "i915_public.h"
43
44
45/*
46 * Probe functions
47 */
48
49
50static const char *
51i915_get_vendor(struct pipe_screen *screen)
52{
53   return "VMware, Inc.";
54}
55
56static const char *
57i915_get_name(struct pipe_screen *screen)
58{
59   static char buffer[128];
60   const char *chipset;
61
62   switch (i915_screen(screen)->iws->pci_id) {
63   case PCI_CHIP_I915_G:
64      chipset = "915G";
65      break;
66   case PCI_CHIP_I915_GM:
67      chipset = "915GM";
68      break;
69   case PCI_CHIP_I945_G:
70      chipset = "945G";
71      break;
72   case PCI_CHIP_I945_GM:
73      chipset = "945GM";
74      break;
75   case PCI_CHIP_I945_GME:
76      chipset = "945GME";
77      break;
78   case PCI_CHIP_G33_G:
79      chipset = "G33";
80      break;
81   case PCI_CHIP_Q35_G:
82      chipset = "Q35";
83      break;
84   case PCI_CHIP_Q33_G:
85      chipset = "Q33";
86      break;
87   case PCI_CHIP_PINEVIEW_G:
88      chipset = "Pineview G";
89      break;
90   case PCI_CHIP_PINEVIEW_M:
91      chipset = "Pineview M";
92      break;
93   default:
94      chipset = "unknown";
95      break;
96   }
97
98   util_snprintf(buffer, sizeof(buffer), "i915 (chipset: %s)", chipset);
99   return buffer;
100}
101
102static int
103i915_get_shader_param(struct pipe_screen *screen, unsigned shader, enum pipe_shader_cap cap)
104{
105   switch(shader) {
106   case PIPE_SHADER_VERTEX:
107      switch (cap) {
108      case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
109         if (debug_get_bool_option("DRAW_USE_LLVM", TRUE))
110            return PIPE_MAX_SAMPLERS;
111         else
112            return 0;
113       default:
114         return draw_get_shader_param(shader, cap);
115      }
116   case PIPE_SHADER_FRAGMENT:
117      /* XXX: some of these are just shader model 2.0 values, fix this! */
118      switch(cap) {
119      case PIPE_SHADER_CAP_MAX_INSTRUCTIONS:
120         return I915_MAX_ALU_INSN + I915_MAX_TEX_INSN;
121      case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS:
122         return I915_MAX_ALU_INSN;
123      case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS:
124         return I915_MAX_TEX_INSN;
125      case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS:
126         return 8;
127      case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH:
128         return 0;
129      case PIPE_SHADER_CAP_MAX_INPUTS:
130         return 10;
131      case PIPE_SHADER_CAP_MAX_CONSTS:
132         return 32;
133      case PIPE_SHADER_CAP_MAX_CONST_BUFFERS:
134         return 1;
135      case PIPE_SHADER_CAP_MAX_TEMPS:
136         return 12; /* XXX: 12 -> 32 ? */
137      case PIPE_SHADER_CAP_MAX_ADDRS:
138         return 0;
139      case PIPE_SHADER_CAP_MAX_PREDS:
140         return 0;
141      case PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED:
142         return 0;
143      case PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR:
144      case PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR:
145      case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR:
146      case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
147         return 1;
148      case PIPE_SHADER_CAP_SUBROUTINES:
149         return 0;
150      case PIPE_SHADER_CAP_INTEGERS:
151         return 0;
152      case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
153         return I915_TEX_UNITS;
154      default:
155         debug_printf("%s: Unknown cap %u.\n", __FUNCTION__, cap);
156         return 0;
157      }
158      break;
159   default:
160      return 0;
161   }
162
163}
164
165static int
166i915_get_param(struct pipe_screen *screen, enum pipe_cap cap)
167{
168   struct i915_screen *is = i915_screen(screen);
169
170   switch (cap) {
171   /* Supported features (boolean caps). */
172   case PIPE_CAP_ANISOTROPIC_FILTER:
173   case PIPE_CAP_DEPTHSTENCIL_CLEAR_SEPARATE:
174   case PIPE_CAP_NPOT_TEXTURES:
175   case PIPE_CAP_POINT_SPRITE:
176   case PIPE_CAP_PRIMITIVE_RESTART: /* draw module */
177   case PIPE_CAP_TEXTURE_SHADOW_MAP:
178   case PIPE_CAP_TWO_SIDED_STENCIL:
179   case PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR:
180   case PIPE_CAP_BLEND_EQUATION_SEPARATE:
181   case PIPE_CAP_TGSI_INSTANCEID:
182   case PIPE_CAP_VERTEX_COLOR_CLAMPED:
183   case PIPE_CAP_USER_VERTEX_BUFFERS:
184   case PIPE_CAP_USER_INDEX_BUFFERS:
185   case PIPE_CAP_USER_CONSTANT_BUFFERS:
186      return 1;
187
188   /* Unsupported features (boolean caps). */
189   case PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS:
190   case PIPE_CAP_DEPTH_CLIP_DISABLE:
191   case PIPE_CAP_INDEP_BLEND_ENABLE:
192   case PIPE_CAP_INDEP_BLEND_FUNC:
193   case PIPE_CAP_SHADER_STENCIL_EXPORT:
194   case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
195   case PIPE_CAP_TEXTURE_SWIZZLE:
196   case PIPE_CAP_TIMER_QUERY:
197   case PIPE_CAP_SM3:
198   case PIPE_CAP_SEAMLESS_CUBE_MAP:
199   case PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE:
200   case PIPE_CAP_SCALED_RESOLVE:
201   case PIPE_CAP_FRAGMENT_COLOR_CLAMPED:
202   case PIPE_CAP_MIXED_COLORBUFFER_FORMATS:
203   case PIPE_CAP_CONDITIONAL_RENDER:
204   case PIPE_CAP_TEXTURE_BARRIER:
205   case PIPE_CAP_TGSI_CAN_COMPACT_VARYINGS:
206   case PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS:
207   case PIPE_CAP_VERTEX_COLOR_UNCLAMPED:
208   case PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION:
209   case PIPE_CAP_START_INSTANCE:
210   case PIPE_CAP_QUERY_TIMESTAMP:
211      return 0;
212
213   case PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT:
214      return 16;
215
216   /* Features we can lie about (boolean caps). */
217   case PIPE_CAP_OCCLUSION_QUERY:
218      return is->debug.lie ? 1 : 0;
219
220   /* Texturing. */
221   case PIPE_CAP_MAX_COMBINED_SAMPLERS:
222      return i915_get_shader_param(screen,
223                                   PIPE_SHADER_VERTEX,
224                                   PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS) +
225             i915_get_shader_param(screen,
226                                   PIPE_SHADER_FRAGMENT,
227                                   PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS);
228   case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
229      return I915_MAX_TEXTURE_2D_LEVELS;
230   case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
231      return I915_MAX_TEXTURE_3D_LEVELS;
232   case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
233      return I915_MAX_TEXTURE_2D_LEVELS;
234   case PIPE_CAP_MIN_TEXEL_OFFSET:
235   case PIPE_CAP_MAX_TEXEL_OFFSET:
236   case PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS:
237   case PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS:
238   case PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS:
239      return 0;
240
241   /* Render targets. */
242   case PIPE_CAP_MAX_RENDER_TARGETS:
243      return 1;
244
245   /* Fragment coordinate conventions. */
246   case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
247   case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
248      return 1;
249   case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
250   case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
251      return 0;
252
253   default:
254      debug_printf("%s: Unknown cap %u.\n", __FUNCTION__, cap);
255      return 0;
256   }
257}
258
259static float
260i915_get_paramf(struct pipe_screen *screen, enum pipe_capf cap)
261{
262   switch(cap) {
263   case PIPE_CAPF_MAX_LINE_WIDTH:
264      /* fall-through */
265   case PIPE_CAPF_MAX_LINE_WIDTH_AA:
266      return 7.5;
267
268   case PIPE_CAPF_MAX_POINT_WIDTH:
269      /* fall-through */
270   case PIPE_CAPF_MAX_POINT_WIDTH_AA:
271      return 255.0;
272
273   case PIPE_CAPF_MAX_TEXTURE_ANISOTROPY:
274      return 4.0;
275
276   case PIPE_CAPF_MAX_TEXTURE_LOD_BIAS:
277      return 16.0;
278
279   default:
280      debug_printf("%s: Unknown cap %u.\n", __FUNCTION__, cap);
281      return 0;
282   }
283}
284
285boolean
286i915_is_format_supported(struct pipe_screen *screen,
287                         enum pipe_format format,
288                         enum pipe_texture_target target,
289                         unsigned sample_count,
290                         unsigned tex_usage)
291{
292   static const enum pipe_format tex_supported[] = {
293      PIPE_FORMAT_B8G8R8A8_UNORM,
294      PIPE_FORMAT_B8G8R8A8_SRGB,
295      PIPE_FORMAT_B8G8R8X8_UNORM,
296      PIPE_FORMAT_R8G8B8A8_UNORM,
297      PIPE_FORMAT_R8G8B8X8_UNORM,
298      PIPE_FORMAT_B5G6R5_UNORM,
299      PIPE_FORMAT_B10G10R10A2_UNORM,
300      PIPE_FORMAT_L8_UNORM,
301      PIPE_FORMAT_A8_UNORM,
302      PIPE_FORMAT_I8_UNORM,
303      PIPE_FORMAT_L8A8_UNORM,
304      PIPE_FORMAT_UYVY,
305      PIPE_FORMAT_YUYV,
306      /* XXX why not?
307      PIPE_FORMAT_Z16_UNORM, */
308      PIPE_FORMAT_DXT1_RGB,
309      PIPE_FORMAT_DXT1_RGBA,
310      PIPE_FORMAT_DXT3_RGBA,
311      PIPE_FORMAT_DXT5_RGBA,
312      PIPE_FORMAT_Z24X8_UNORM,
313      PIPE_FORMAT_Z24_UNORM_S8_UINT,
314      PIPE_FORMAT_NONE  /* list terminator */
315   };
316   static const enum pipe_format render_supported[] = {
317      PIPE_FORMAT_B8G8R8A8_UNORM,
318      PIPE_FORMAT_B8G8R8X8_UNORM,
319      PIPE_FORMAT_R8G8B8A8_UNORM,
320      PIPE_FORMAT_R8G8B8X8_UNORM,
321      PIPE_FORMAT_B5G6R5_UNORM,
322      PIPE_FORMAT_B10G10R10A2_UNORM,
323      PIPE_FORMAT_L8_UNORM,
324      PIPE_FORMAT_A8_UNORM,
325      PIPE_FORMAT_I8_UNORM,
326      PIPE_FORMAT_NONE  /* list terminator */
327   };
328   static const enum pipe_format depth_supported[] = {
329      /* XXX why not?
330      PIPE_FORMAT_Z16_UNORM, */
331      PIPE_FORMAT_Z24X8_UNORM,
332      PIPE_FORMAT_Z24_UNORM_S8_UINT,
333      PIPE_FORMAT_NONE  /* list terminator */
334   };
335   const enum pipe_format *list;
336   uint i;
337
338   if (!util_format_is_supported(format, tex_usage))
339      return FALSE;
340
341   if (sample_count > 1)
342      return FALSE;
343
344   if(tex_usage & PIPE_BIND_DEPTH_STENCIL)
345      list = depth_supported;
346   else if (tex_usage & PIPE_BIND_RENDER_TARGET)
347      list = render_supported;
348   else if (tex_usage & PIPE_BIND_SAMPLER_VIEW)
349      list = tex_supported;
350   else
351      return TRUE; /* PIPE_BIND_{VERTEX,INDEX}_BUFFER */
352
353   for (i = 0; list[i] != PIPE_FORMAT_NONE; i++) {
354      if (list[i] == format)
355         return TRUE;
356   }
357
358   return FALSE;
359}
360
361
362/*
363 * Fence functions
364 */
365
366
367static void
368i915_fence_reference(struct pipe_screen *screen,
369                     struct pipe_fence_handle **ptr,
370                     struct pipe_fence_handle *fence)
371{
372   struct i915_screen *is = i915_screen(screen);
373
374   is->iws->fence_reference(is->iws, ptr, fence);
375}
376
377static boolean
378i915_fence_signalled(struct pipe_screen *screen,
379                     struct pipe_fence_handle *fence)
380{
381   struct i915_screen *is = i915_screen(screen);
382
383   return is->iws->fence_signalled(is->iws, fence) == 1;
384}
385
386static boolean
387i915_fence_finish(struct pipe_screen *screen,
388                  struct pipe_fence_handle *fence,
389                  uint64_t timeout)
390{
391   struct i915_screen *is = i915_screen(screen);
392
393   return is->iws->fence_finish(is->iws, fence) == 1;
394}
395
396
397/*
398 * Generic functions
399 */
400
401
402static void
403i915_flush_frontbuffer(struct pipe_screen *screen,
404                       struct pipe_resource *resource,
405                       unsigned level, unsigned layer,
406                       void *winsys_drawable_handle)
407{
408   /* XXX: Dummy right now. */
409   (void)screen;
410   (void)resource;
411   (void)level;
412   (void)layer;
413   (void)winsys_drawable_handle;
414}
415
416static void
417i915_destroy_screen(struct pipe_screen *screen)
418{
419   struct i915_screen *is = i915_screen(screen);
420
421   if (is->iws)
422      is->iws->destroy(is->iws);
423
424   FREE(is);
425}
426
427/**
428 * Create a new i915_screen object
429 */
430struct pipe_screen *
431i915_screen_create(struct i915_winsys *iws)
432{
433   struct i915_screen *is = CALLOC_STRUCT(i915_screen);
434
435   if (!is)
436      return NULL;
437
438   switch (iws->pci_id) {
439   case PCI_CHIP_I915_G:
440   case PCI_CHIP_I915_GM:
441      is->is_i945 = FALSE;
442      break;
443
444   case PCI_CHIP_I945_G:
445   case PCI_CHIP_I945_GM:
446   case PCI_CHIP_I945_GME:
447   case PCI_CHIP_G33_G:
448   case PCI_CHIP_Q33_G:
449   case PCI_CHIP_Q35_G:
450   case PCI_CHIP_PINEVIEW_G:
451   case PCI_CHIP_PINEVIEW_M:
452      is->is_i945 = TRUE;
453      break;
454
455   default:
456      debug_printf("%s: unknown pci id 0x%x, cannot create screen\n",
457                   __FUNCTION__, iws->pci_id);
458      FREE(is);
459      return NULL;
460   }
461
462   is->iws = iws;
463
464   is->base.destroy = i915_destroy_screen;
465   is->base.flush_frontbuffer = i915_flush_frontbuffer;
466
467   is->base.get_name = i915_get_name;
468   is->base.get_vendor = i915_get_vendor;
469   is->base.get_param = i915_get_param;
470   is->base.get_shader_param = i915_get_shader_param;
471   is->base.get_paramf = i915_get_paramf;
472   is->base.is_format_supported = i915_is_format_supported;
473
474   is->base.context_create = i915_create_context;
475
476   is->base.fence_reference = i915_fence_reference;
477   is->base.fence_signalled = i915_fence_signalled;
478   is->base.fence_finish = i915_fence_finish;
479
480   i915_init_screen_resource_functions(is);
481
482   i915_debug_init(is);
483
484   util_format_s3tc_init();
485
486   return &is->base;
487}
488