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 
50 static const char *
i915_get_vendor(struct pipe_screen * screen)51 i915_get_vendor(struct pipe_screen *screen)
52 {
53    return "VMware, Inc.";
54 }
55 
56 static const char *
i915_get_name(struct pipe_screen * screen)57 i915_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 
102 static int
i915_get_shader_param(struct pipe_screen * screen,unsigned shader,enum pipe_shader_cap cap)103 i915_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 
165 static int
i915_get_param(struct pipe_screen * screen,enum pipe_cap cap)166 i915_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 
259 static float
i915_get_paramf(struct pipe_screen * screen,enum pipe_capf cap)260 i915_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 
285 boolean
i915_is_format_supported(struct pipe_screen * screen,enum pipe_format format,enum pipe_texture_target target,unsigned sample_count,unsigned tex_usage)286 i915_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 
367 static void
i915_fence_reference(struct pipe_screen * screen,struct pipe_fence_handle ** ptr,struct pipe_fence_handle * fence)368 i915_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 
377 static boolean
i915_fence_signalled(struct pipe_screen * screen,struct pipe_fence_handle * fence)378 i915_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 
386 static boolean
i915_fence_finish(struct pipe_screen * screen,struct pipe_fence_handle * fence,uint64_t timeout)387 i915_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 
402 static void
i915_flush_frontbuffer(struct pipe_screen * screen,struct pipe_resource * resource,unsigned level,unsigned layer,void * winsys_drawable_handle)403 i915_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 
416 static void
i915_destroy_screen(struct pipe_screen * screen)417 i915_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  */
430 struct pipe_screen *
i915_screen_create(struct i915_winsys * iws)431 i915_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