r300_screen.c revision 7b31b235d069ab4154bfc4b1eacde6368852aaee 
1/*
2 * Copyright 2008 Corbin Simpson <MostAwesomeDude@gmail.com>
3 * Copyright 2010 Marek Olšák <maraeo@gmail.com>
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * on the rights to use, copy, modify, merge, publish, distribute, sub
9 * license, and/or sell copies of the Software, and to permit persons to whom
10 * the Software is furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice (including the next
13 * paragraph) shall be included in all copies or substantial portions of the
14 * Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
20 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
21 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
22 * USE OR OTHER DEALINGS IN THE SOFTWARE. */
23
24#include "util/u_format.h"
25#include "util/u_format_s3tc.h"
26#include "util/u_memory.h"
27
28#include "r300_context.h"
29#include "r300_texture.h"
30#include "r300_screen_buffer.h"
31#include "r300_state_inlines.h"
32#include "r300_winsys.h"
33#include "r300_public.h"
34
35/* Return the identifier behind whom the brave coders responsible for this
36 * amalgamation of code, sweat, and duct tape, routinely obscure their names.
37 *
38 * ...I should have just put "Corbin Simpson", but I'm not that cool.
39 *
40 * (Or egotistical. Yet.) */
41static const char* r300_get_vendor(struct pipe_screen* pscreen)
42{
43    return "X.Org R300 Project";
44}
45
46static const char* chip_families[] = {
47    "R300",
48    "R350",
49    "R360",
50    "RV350",
51    "RV370",
52    "RV380",
53    "R420",
54    "R423",
55    "R430",
56    "R480",
57    "R481",
58    "RV410",
59    "RS400",
60    "RC410",
61    "RS480",
62    "RS482",
63    "RS600",
64    "RS690",
65    "RS740",
66    "RV515",
67    "R520",
68    "RV530",
69    "R580",
70    "RV560",
71    "RV570"
72};
73
74static const char* r300_get_name(struct pipe_screen* pscreen)
75{
76    struct r300_screen* r300screen = r300_screen(pscreen);
77
78    return chip_families[r300screen->caps.family];
79}
80
81static int r300_get_param(struct pipe_screen* pscreen, enum pipe_cap param)
82{
83    struct r300_screen* r300screen = r300_screen(pscreen);
84    boolean is_r400 = r300screen->caps.is_r400;
85    boolean is_r500 = r300screen->caps.is_r500;
86
87    /* XXX extended shader capabilities of r400 unimplemented */
88    is_r400 = FALSE;
89
90    switch (param) {
91        /* Supported features (boolean caps). */
92        case PIPE_CAP_NPOT_TEXTURES:
93        case PIPE_CAP_TWO_SIDED_STENCIL:
94        case PIPE_CAP_GLSL:
95            /* I'll be frank. This is a lie.
96             *
97             * We don't truly support GLSL on any of this driver's chipsets.
98             * To be fair, no chipset supports the full GLSL specification
99             * to the best of our knowledge, but some of the less esoteric
100             * features are still missing here.
101             *
102             * Rather than cripple ourselves intentionally, I'm going to set
103             * this flag, and as Gallium's interface continues to change, I
104             * hope that this single monolithic GLSL enable can slowly get
105             * split down into many different pieces and the state tracker
106             * will handle fallbacks transparently, like it should.
107             *
108             * ~ C.
109             */
110        case PIPE_CAP_ANISOTROPIC_FILTER:
111        case PIPE_CAP_POINT_SPRITE:
112        case PIPE_CAP_OCCLUSION_QUERY:
113        case PIPE_CAP_TEXTURE_SHADOW_MAP:
114        case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
115        case PIPE_CAP_TEXTURE_MIRROR_REPEAT:
116        case PIPE_CAP_BLEND_EQUATION_SEPARATE:
117        case PIPE_CAP_TEXTURE_SWIZZLE:
118            return 1;
119
120        /* Unsupported features (boolean caps). */
121        case PIPE_CAP_TIMER_QUERY:
122        case PIPE_CAP_DUAL_SOURCE_BLEND:
123        case PIPE_CAP_TGSI_CONT_SUPPORTED:
124        case PIPE_CAP_INDEP_BLEND_ENABLE:
125        case PIPE_CAP_INDEP_BLEND_FUNC:
126            return 0;
127
128        /* Texturing. */
129        case PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS:
130        case PIPE_CAP_MAX_COMBINED_SAMPLERS:
131            return r300screen->caps.num_tex_units;
132        case PIPE_CAP_MAX_VERTEX_TEXTURE_UNITS:
133            return 0;
134        case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
135        case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
136        case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
137            /* 13 == 4096, 12 == 2048 */
138            return is_r500 ? 13 : 12;
139
140        /* Render targets. */
141        case PIPE_CAP_MAX_RENDER_TARGETS:
142            return 4;
143
144        /* General shader limits and features. */
145        case PIPE_CAP_SM3:
146            return is_r500 ? 1 : 0;
147        case PIPE_CAP_MAX_CONST_BUFFERS:
148            return 1;
149        case PIPE_CAP_MAX_CONST_BUFFER_SIZE:
150            return 256;
151
152        case PIPE_CAP_DEPTHSTENCIL_CLEAR_SEPARATE:
153            return 1;
154
155        /* Fragment coordinate conventions. */
156        case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
157        case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
158	    return 1;
159        case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
160        case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
161            return 0;
162
163        /* Fragment shader limits. */
164        case PIPE_CAP_MAX_FS_INSTRUCTIONS:
165            return is_r500 || is_r400 ? 512 : 96;
166        case PIPE_CAP_MAX_FS_ALU_INSTRUCTIONS:
167            return is_r500 || is_r400 ? 512 : 64;
168        case PIPE_CAP_MAX_FS_TEX_INSTRUCTIONS:
169            return is_r500 || is_r400 ? 512 : 32;
170        case PIPE_CAP_MAX_FS_TEX_INDIRECTIONS:
171            return is_r500 ? 511 : 4;
172        case PIPE_CAP_MAX_FS_CONTROL_FLOW_DEPTH:
173            return is_r500 ? 64 : 0; /* Actually unlimited on r500. */
174        case PIPE_CAP_MAX_FS_INPUTS:
175            /* 2 colors + 8 texcoords are always supported
176             * (minus fog and wpos).
177             *
178             * R500 has the ability to turn 3rd and 4th color into
179             * additional texcoords but there is no two-sided color
180             * selection then. However the facing bit can be used instead. */
181            return 10;
182        case PIPE_CAP_MAX_FS_CONSTS:
183            return is_r500 ? 256 : 32;
184        case PIPE_CAP_MAX_FS_TEMPS:
185            return is_r500 ? 128 : is_r400 ? 64 : 32;
186        case PIPE_CAP_MAX_FS_ADDRS:
187            return 0;
188        case PIPE_CAP_MAX_FS_PREDS:
189            return is_r500 ? 1 : 0;
190
191        /* Vertex shader limits. */
192        case PIPE_CAP_MAX_VS_INSTRUCTIONS:
193        case PIPE_CAP_MAX_VS_ALU_INSTRUCTIONS:
194            return is_r500 ? 1024 : 256;
195        case PIPE_CAP_MAX_VS_TEX_INSTRUCTIONS:
196        case PIPE_CAP_MAX_VS_TEX_INDIRECTIONS:
197            return 0;
198        case PIPE_CAP_MAX_VS_CONTROL_FLOW_DEPTH:
199            return is_r500 ? 4 : 0; /* For loops; not sure about conditionals. */
200        case PIPE_CAP_MAX_VS_INPUTS:
201            return 16;
202        case PIPE_CAP_MAX_VS_CONSTS:
203            return 256;
204        case PIPE_CAP_MAX_VS_TEMPS:
205            return 32;
206        case PIPE_CAP_MAX_VS_ADDRS:
207            return 1; /* XXX guessed */
208        case PIPE_CAP_MAX_VS_PREDS:
209            return is_r500 ? 4 : 0; /* XXX guessed. */
210        case PIPE_CAP_GEOMETRY_SHADER4:
211            return 0;
212
213        default:
214            fprintf(stderr, "r300: Implementation error: Bad param %d\n",
215                param);
216            return 0;
217    }
218}
219
220static float r300_get_paramf(struct pipe_screen* pscreen, enum pipe_cap param)
221{
222    struct r300_screen* r300screen = r300_screen(pscreen);
223
224    switch (param) {
225        case PIPE_CAP_MAX_LINE_WIDTH:
226        case PIPE_CAP_MAX_LINE_WIDTH_AA:
227        case PIPE_CAP_MAX_POINT_WIDTH:
228        case PIPE_CAP_MAX_POINT_WIDTH_AA:
229            /* The maximum dimensions of the colorbuffer are our practical
230             * rendering limits. 2048 pixels should be enough for anybody. */
231            if (r300screen->caps.is_r500) {
232                return 4096.0f;
233            } else if (r300screen->caps.is_r400) {
234                return 4021.0f;
235            } else {
236                return 2560.0f;
237            }
238        case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
239            return 16.0f;
240        case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
241            return 16.0f;
242        default:
243            fprintf(stderr, "r300: Implementation error: Bad paramf %d\n",
244                param);
245            return 0.0f;
246    }
247}
248
249static boolean r300_is_format_supported(struct pipe_screen* screen,
250                                        enum pipe_format format,
251                                        enum pipe_texture_target target,
252                                        unsigned sample_count,
253                                        unsigned usage,
254                                        unsigned geom_flags)
255{
256    uint32_t retval = 0;
257    boolean is_r500 = r300_screen(screen)->caps.is_r500;
258    boolean is_r400 = r300_screen(screen)->caps.is_r400;
259    boolean is_z24 = format == PIPE_FORMAT_X8Z24_UNORM ||
260                     format == PIPE_FORMAT_S8_USCALED_Z24_UNORM;
261    boolean is_color2101010 = format == PIPE_FORMAT_R10G10B10A2_UNORM ||
262                              format == PIPE_FORMAT_R10G10B10X2_SNORM ||
263                              format == PIPE_FORMAT_B10G10R10A2_UNORM ||
264                              format == PIPE_FORMAT_R10SG10SB10SA2U_NORM;
265    boolean is_ati1n = format == PIPE_FORMAT_RGTC1_UNORM ||
266                       format == PIPE_FORMAT_RGTC1_SNORM;
267    boolean is_ati2n = format == PIPE_FORMAT_RGTC2_UNORM ||
268                       format == PIPE_FORMAT_RGTC2_SNORM;
269    boolean is_half_float = format == PIPE_FORMAT_R16_FLOAT ||
270                            format == PIPE_FORMAT_R16G16_FLOAT ||
271                            format == PIPE_FORMAT_R16G16B16_FLOAT ||
272                            format == PIPE_FORMAT_R16G16B16A16_FLOAT;
273
274    /* Check multisampling support. */
275    switch (sample_count) {
276        case 0:
277        case 1:
278            break;
279        case 2:
280        case 3:
281        case 4:
282        case 6:
283            if (usage != PIPE_BIND_RENDER_TARGET ||
284                !util_format_is_rgba8_variant(
285                    util_format_description(format))) {
286                return FALSE;
287            }
288            break;
289        default:
290            return FALSE;
291    }
292
293    /* Check sampler format support. */
294    if ((usage & PIPE_BIND_SAMPLER_VIEW) &&
295        /* Z24 cannot be sampled from on non-r5xx. */
296        (is_r500 || !is_z24) &&
297        /* ATI1N is r5xx-only. */
298        (is_r500 || !is_ati1n) &&
299        /* ATI2N is supported on r4xx-r5xx. */
300        (is_r400 || is_r500 || !is_ati2n) &&
301        r300_is_sampler_format_supported(format)) {
302        retval |= PIPE_BIND_SAMPLER_VIEW;
303    }
304
305    /* Check colorbuffer format support. */
306    if ((usage & (PIPE_BIND_RENDER_TARGET |
307                  PIPE_BIND_DISPLAY_TARGET |
308                  PIPE_BIND_SCANOUT |
309                  PIPE_BIND_SHARED)) &&
310        /* 2101010 cannot be rendered to on non-r5xx. */
311        (is_r500 || !is_color2101010) &&
312        r300_is_colorbuffer_format_supported(format)) {
313        retval |= usage &
314            (PIPE_BIND_RENDER_TARGET |
315             PIPE_BIND_DISPLAY_TARGET |
316             PIPE_BIND_SCANOUT |
317             PIPE_BIND_SHARED);
318    }
319
320    /* Check depth-stencil format support. */
321    if (usage & PIPE_BIND_DEPTH_STENCIL &&
322        r300_is_zs_format_supported(format)) {
323        retval |= PIPE_BIND_DEPTH_STENCIL;
324    }
325
326    /* Check vertex buffer format support. */
327    if (usage & PIPE_BIND_VERTEX_BUFFER &&
328        /* Half float is supported on >= RV350. */
329        (is_r400 || is_r500 || !is_half_float) &&
330        r300_translate_vertex_data_type(format) != R300_INVALID_FORMAT) {
331        retval |= PIPE_BIND_VERTEX_BUFFER;
332    }
333
334    /* Transfers are always supported. */
335    if (usage & PIPE_BIND_TRANSFER_READ)
336        retval |= PIPE_BIND_TRANSFER_READ;
337    if (usage & PIPE_BIND_TRANSFER_WRITE)
338        retval |= PIPE_BIND_TRANSFER_WRITE;
339
340    return retval == usage;
341}
342
343static void r300_destroy_screen(struct pipe_screen* pscreen)
344{
345    struct r300_screen* r300screen = r300_screen(pscreen);
346    struct r300_winsys_screen *rws = r300_winsys_screen(pscreen);
347
348    util_mempool_destroy(&r300screen->pool_buffers);
349
350    if (rws)
351      rws->destroy(rws);
352
353    FREE(r300screen);
354}
355
356static void r300_fence_reference(struct pipe_screen *screen,
357                                 struct pipe_fence_handle **ptr,
358                                 struct pipe_fence_handle *fence)
359{
360    struct r300_fence **oldf = (struct r300_fence**)ptr;
361    struct r300_fence *newf = (struct r300_fence*)fence;
362
363    if (pipe_reference(&(*oldf)->reference, &newf->reference))
364        FREE(*oldf);
365
366    *ptr = fence;
367}
368
369static int r300_fence_signalled(struct pipe_screen *screen,
370                                struct pipe_fence_handle *fence,
371                                unsigned flags)
372{
373    struct r300_fence *rfence = (struct r300_fence*)fence;
374
375    return rfence->signalled ? 0 : 1; /* 0 == success */
376}
377
378static int r300_fence_finish(struct pipe_screen *screen,
379                             struct pipe_fence_handle *fence,
380                             unsigned flags)
381{
382    struct r300_fence *rfence = (struct r300_fence*)fence;
383
384    r300_finish(rfence->ctx);
385    rfence->signalled = TRUE;
386    return 0; /* 0 == success */
387}
388
389struct pipe_screen* r300_screen_create(struct r300_winsys_screen *rws)
390{
391    struct r300_screen *r300screen = CALLOC_STRUCT(r300_screen);
392
393    if (!r300screen) {
394        FREE(r300screen);
395        return NULL;
396    }
397
398    r300screen->caps.pci_id = rws->get_value(rws, R300_VID_PCI_ID);
399    r300screen->caps.num_frag_pipes = rws->get_value(rws, R300_VID_GB_PIPES);
400    r300screen->caps.num_z_pipes = rws->get_value(rws, R300_VID_Z_PIPES);
401
402    r300_init_debug(r300screen);
403    r300_parse_chipset(&r300screen->caps);
404
405    util_mempool_create(&r300screen->pool_buffers,
406                        sizeof(struct r300_buffer), 64,
407                        UTIL_MEMPOOL_SINGLETHREADED);
408
409    r300screen->rws = rws;
410    r300screen->screen.winsys = (struct pipe_winsys*)rws;
411    r300screen->screen.destroy = r300_destroy_screen;
412    r300screen->screen.get_name = r300_get_name;
413    r300screen->screen.get_vendor = r300_get_vendor;
414    r300screen->screen.get_param = r300_get_param;
415    r300screen->screen.get_paramf = r300_get_paramf;
416    r300screen->screen.is_format_supported = r300_is_format_supported;
417    r300screen->screen.context_create = r300_create_context;
418
419    r300screen->screen.fence_reference = r300_fence_reference;
420    r300screen->screen.fence_signalled = r300_fence_signalled;
421    r300screen->screen.fence_finish = r300_fence_finish;
422
423    r300_init_screen_resource_functions(r300screen);
424
425    util_format_s3tc_init();
426
427    return &r300screen->screen;
428}
429