r300_screen.c revision de7b181e99a64cb517a021f00f714c6af9b337ee 
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
34/* Return the identifier behind whom the brave coders responsible for this
35 * amalgamation of code, sweat, and duct tape, routinely obscure their names.
36 *
37 * ...I should have just put "Corbin Simpson", but I'm not that cool.
38 *
39 * (Or egotistical. Yet.) */
40static const char* r300_get_vendor(struct pipe_screen* pscreen)
41{
42    return "X.Org R300 Project";
43}
44
45static const char* chip_families[] = {
46    "R300",
47    "R350",
48    "R360",
49    "RV350",
50    "RV370",
51    "RV380",
52    "R420",
53    "R423",
54    "R430",
55    "R480",
56    "R481",
57    "RV410",
58    "RS400",
59    "RC410",
60    "RS480",
61    "RS482",
62    "RS600",
63    "RS690",
64    "RS740",
65    "RV515",
66    "R520",
67    "RV530",
68    "R580",
69    "RV560",
70    "RV570"
71};
72
73static const char* r300_get_name(struct pipe_screen* pscreen)
74{
75    struct r300_screen* r300screen = r300_screen(pscreen);
76
77    return chip_families[r300screen->caps.family];
78}
79
80static int r300_get_param(struct pipe_screen* pscreen, enum pipe_cap param)
81{
82    struct r300_screen* r300screen = r300_screen(pscreen);
83    boolean is_r400 = r300screen->caps.is_r400;
84    boolean is_r500 = r300screen->caps.is_r500;
85
86    /* XXX extended shader capabilities of r400 unimplemented */
87    is_r400 = FALSE;
88
89    switch (param) {
90        /* Supported features (boolean caps). */
91        case PIPE_CAP_NPOT_TEXTURES:
92        case PIPE_CAP_TWO_SIDED_STENCIL:
93        case PIPE_CAP_GLSL:
94            /* I'll be frank. This is a lie.
95             *
96             * We don't truly support GLSL on any of this driver's chipsets.
97             * To be fair, no chipset supports the full GLSL specification
98             * to the best of our knowledge, but some of the less esoteric
99             * features are still missing here.
100             *
101             * Rather than cripple ourselves intentionally, I'm going to set
102             * this flag, and as Gallium's interface continues to change, I
103             * hope that this single monolithic GLSL enable can slowly get
104             * split down into many different pieces and the state tracker
105             * will handle fallbacks transparently, like it should.
106             *
107             * ~ C.
108             */
109        case PIPE_CAP_ANISOTROPIC_FILTER:
110        case PIPE_CAP_POINT_SPRITE:
111        case PIPE_CAP_OCCLUSION_QUERY:
112        case PIPE_CAP_TEXTURE_SHADOW_MAP:
113        case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
114        case PIPE_CAP_TEXTURE_MIRROR_REPEAT:
115        case PIPE_CAP_BLEND_EQUATION_SEPARATE:
116        case PIPE_CAP_TEXTURE_SWIZZLE:
117            return 1;
118
119        /* Unsupported features (boolean caps). */
120        case PIPE_CAP_TIMER_QUERY:
121        case PIPE_CAP_DUAL_SOURCE_BLEND:
122        case PIPE_CAP_TGSI_CONT_SUPPORTED:
123        case PIPE_CAP_INDEP_BLEND_ENABLE:
124        case PIPE_CAP_INDEP_BLEND_FUNC:
125            return 0;
126
127        /* Texturing. */
128        case PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS:
129        case PIPE_CAP_MAX_COMBINED_SAMPLERS:
130            return r300screen->caps.num_tex_units;
131        case PIPE_CAP_MAX_VERTEX_TEXTURE_UNITS:
132            return 0;
133        case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
134        case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
135        case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
136            /* 13 == 4096, 12 == 2048 */
137            return is_r500 ? 13 : 12;
138
139        /* Render targets. */
140        case PIPE_CAP_MAX_RENDER_TARGETS:
141            return 4;
142
143        /* General shader limits and features. */
144        case PIPE_CAP_SM3:
145            return is_r500 ? 1 : 0;
146        case PIPE_CAP_MAX_CONST_BUFFERS:
147            return 1;
148        case PIPE_CAP_MAX_CONST_BUFFER_SIZE:
149            return 256;
150
151        case PIPE_CAP_DEPTHSTENCIL_CLEAR_SEPARATE:
152            return 1;
153
154        /* Fragment coordinate conventions. */
155        case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
156        case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
157	    return 1;
158        case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
159        case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
160            return 0;
161
162        /* Fragment shader limits. */
163        case PIPE_CAP_MAX_FS_INSTRUCTIONS:
164            return is_r500 || is_r400 ? 512 : 96;
165        case PIPE_CAP_MAX_FS_ALU_INSTRUCTIONS:
166            return is_r500 || is_r400 ? 512 : 64;
167        case PIPE_CAP_MAX_FS_TEX_INSTRUCTIONS:
168            return is_r500 || is_r400 ? 512 : 32;
169        case PIPE_CAP_MAX_FS_TEX_INDIRECTIONS:
170            return is_r500 ? 511 : 4;
171        case PIPE_CAP_MAX_FS_CONTROL_FLOW_DEPTH:
172            return is_r500 ? 64 : 0; /* Actually unlimited on r500. */
173        case PIPE_CAP_MAX_FS_INPUTS:
174            /* 2 colors + 8 texcoords are always supported
175             * (minus fog and wpos).
176             *
177             * R500 has the ability to turn 3rd and 4th color into
178             * additional texcoords but there is no two-sided color
179             * selection then. However the facing bit can be used instead. */
180            return 10;
181        case PIPE_CAP_MAX_FS_CONSTS:
182            return is_r500 ? 256 : 32;
183        case PIPE_CAP_MAX_FS_TEMPS:
184            return is_r500 ? 128 : is_r400 ? 64 : 32;
185        case PIPE_CAP_MAX_FS_ADDRS:
186            return 0;
187        case PIPE_CAP_MAX_FS_PREDS:
188            return is_r500 ? 1 : 0;
189
190        /* Vertex shader limits. */
191        case PIPE_CAP_MAX_VS_INSTRUCTIONS:
192        case PIPE_CAP_MAX_VS_ALU_INSTRUCTIONS:
193            return is_r500 ? 1024 : 256;
194        case PIPE_CAP_MAX_VS_TEX_INSTRUCTIONS:
195        case PIPE_CAP_MAX_VS_TEX_INDIRECTIONS:
196            return 0;
197        case PIPE_CAP_MAX_VS_CONTROL_FLOW_DEPTH:
198            return is_r500 ? 4 : 0; /* For loops; not sure about conditionals. */
199        case PIPE_CAP_MAX_VS_INPUTS:
200            return 16;
201        case PIPE_CAP_MAX_VS_CONSTS:
202            return 256;
203        case PIPE_CAP_MAX_VS_TEMPS:
204            return 32;
205        case PIPE_CAP_MAX_VS_ADDRS:
206            return 1; /* XXX guessed */
207        case PIPE_CAP_MAX_VS_PREDS:
208            return is_r500 ? 4 : 0; /* XXX guessed. */
209
210        default:
211            fprintf(stderr, "r300: Implementation error: Bad param %d\n",
212                param);
213            return 0;
214    }
215}
216
217static float r300_get_paramf(struct pipe_screen* pscreen, enum pipe_cap param)
218{
219    struct r300_screen* r300screen = r300_screen(pscreen);
220
221    switch (param) {
222        case PIPE_CAP_MAX_LINE_WIDTH:
223        case PIPE_CAP_MAX_LINE_WIDTH_AA:
224        case PIPE_CAP_MAX_POINT_WIDTH:
225        case PIPE_CAP_MAX_POINT_WIDTH_AA:
226            /* The maximum dimensions of the colorbuffer are our practical
227             * rendering limits. 2048 pixels should be enough for anybody. */
228            if (r300screen->caps.is_r500) {
229                return 4096.0f;
230            } else if (r300screen->caps.is_r400) {
231                return 4021.0f;
232            } else {
233                return 2560.0f;
234            }
235        case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
236            return 16.0f;
237        case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
238            return 16.0f;
239        default:
240            fprintf(stderr, "r300: Implementation error: Bad paramf %d\n",
241                param);
242            return 0.0f;
243    }
244}
245
246static boolean r300_is_format_supported(struct pipe_screen* screen,
247                                        enum pipe_format format,
248                                        enum pipe_texture_target target,
249                                        unsigned sample_count,
250                                        unsigned usage,
251                                        unsigned geom_flags)
252{
253    uint32_t retval = 0;
254    boolean is_r500 = r300_screen(screen)->caps.is_r500;
255    boolean is_r400 = r300_screen(screen)->caps.is_r400;
256    boolean is_rv350 = r300_screen(screen)->caps.is_rv350;
257    boolean is_z24 = format == PIPE_FORMAT_X8Z24_UNORM ||
258                     format == PIPE_FORMAT_S8_USCALED_Z24_UNORM;
259    boolean is_color2101010 = format == PIPE_FORMAT_R10G10B10A2_UNORM ||
260                              format == PIPE_FORMAT_R10G10B10X2_SNORM ||
261                              format == PIPE_FORMAT_B10G10R10A2_UNORM ||
262                              format == PIPE_FORMAT_R10SG10SB10SA2U_NORM;
263    boolean is_ati1n = format == PIPE_FORMAT_RGTC1_UNORM ||
264                       format == PIPE_FORMAT_RGTC1_SNORM;
265    boolean is_ati2n = format == PIPE_FORMAT_RGTC2_UNORM ||
266                       format == PIPE_FORMAT_RGTC2_SNORM;
267    boolean is_half_float = format == PIPE_FORMAT_R16_FLOAT ||
268                            format == PIPE_FORMAT_R16G16_FLOAT ||
269                            format == PIPE_FORMAT_R16G16B16_FLOAT ||
270                            format == PIPE_FORMAT_R16G16B16A16_FLOAT;
271
272    switch (sample_count) {
273        case 0:
274        case 1:
275            break;
276        case 2:
277        case 3:
278        case 4:
279        case 6:
280            if (usage != PIPE_BIND_RENDER_TARGET ||
281                !util_format_is_rgba8_variant(
282                    util_format_description(format))) {
283                return FALSE;
284            }
285            break;
286        default:
287            return FALSE;
288    }
289
290    /* Check sampler format support. */
291    if ((usage & PIPE_BIND_SAMPLER_VIEW) &&
292        /* Z24 cannot be sampled from on non-r5xx. */
293        (is_r500 || !is_z24) &&
294        /* ATI1N is r5xx-only. */
295        (is_r500 || !is_ati1n) &&
296        /* ATI2N is supported on r4xx-r5xx. */
297        (is_r400 || is_r500 || !is_ati2n) &&
298        r300_is_sampler_format_supported(format)) {
299        retval |= PIPE_BIND_SAMPLER_VIEW;
300    }
301
302    /* Check colorbuffer format support. */
303    if ((usage & (PIPE_BIND_RENDER_TARGET |
304                  PIPE_BIND_DISPLAY_TARGET |
305                  PIPE_BIND_SCANOUT |
306                  PIPE_BIND_SHARED)) &&
307        /* 2101010 cannot be rendered to on non-r5xx. */
308        (is_r500 || !is_color2101010) &&
309        r300_is_colorbuffer_format_supported(format)) {
310        retval |= usage &
311            (PIPE_BIND_RENDER_TARGET |
312             PIPE_BIND_DISPLAY_TARGET |
313             PIPE_BIND_SCANOUT |
314             PIPE_BIND_SHARED);
315    }
316
317    /* Check depth-stencil format support. */
318    if (usage & PIPE_BIND_DEPTH_STENCIL &&
319        r300_is_zs_format_supported(format)) {
320        retval |= PIPE_BIND_DEPTH_STENCIL;
321    }
322
323    /* Check vertex buffer format support. */
324    if (usage & PIPE_BIND_VERTEX_BUFFER &&
325        /* Half float is supported on >= RV350. */
326        (is_rv350 || !is_half_float) &&
327        r300_translate_vertex_data_type(format) != R300_INVALID_FORMAT) {
328        retval |= PIPE_BIND_VERTEX_BUFFER;
329    }
330
331    /* Transfers are always supported. */
332    if (usage & PIPE_BIND_TRANSFER_READ)
333        retval |= PIPE_BIND_TRANSFER_READ;
334    if (usage & PIPE_BIND_TRANSFER_WRITE)
335        retval |= PIPE_BIND_TRANSFER_WRITE;
336
337    return retval == usage;
338}
339
340static void r300_destroy_screen(struct pipe_screen* pscreen)
341{
342    struct r300_screen* r300screen = r300_screen(pscreen);
343    struct r300_winsys_screen *rws = r300_winsys_screen(pscreen);
344
345    if (rws)
346      rws->destroy(rws);
347
348    FREE(r300screen);
349}
350
351static void r300_fence_reference(struct pipe_screen *screen,
352                                 struct pipe_fence_handle **ptr,
353                                 struct pipe_fence_handle *fence)
354{
355    struct r300_fence **oldf = (struct r300_fence**)ptr;
356    struct r300_fence *newf = (struct r300_fence*)fence;
357
358    if (pipe_reference(&(*oldf)->reference, &newf->reference))
359        FREE(*oldf);
360
361    *ptr = fence;
362}
363
364static int r300_fence_signalled(struct pipe_screen *screen,
365                                struct pipe_fence_handle *fence,
366                                unsigned flags)
367{
368    struct r300_fence *rfence = (struct r300_fence*)fence;
369
370    return rfence->signalled ? 0 : 1; /* 0 == success */
371}
372
373static int r300_fence_finish(struct pipe_screen *screen,
374                             struct pipe_fence_handle *fence,
375                             unsigned flags)
376{
377    struct r300_fence *rfence = (struct r300_fence*)fence;
378
379    r300_finish(rfence->ctx);
380    rfence->signalled = TRUE;
381    return 0; /* 0 == success */
382}
383
384struct pipe_screen* r300_create_screen(struct r300_winsys_screen *rws)
385{
386    struct r300_screen *r300screen = CALLOC_STRUCT(r300_screen);
387
388    if (!r300screen) {
389        FREE(r300screen);
390        return NULL;
391    }
392
393    r300screen->caps.pci_id = rws->get_value(rws, R300_VID_PCI_ID);
394    r300screen->caps.num_frag_pipes = rws->get_value(rws, R300_VID_GB_PIPES);
395    r300screen->caps.num_z_pipes = rws->get_value(rws, R300_VID_Z_PIPES);
396
397    r300_init_debug(r300screen);
398    r300_parse_chipset(&r300screen->caps);
399
400    r300screen->rws = rws;
401    r300screen->screen.winsys = (struct pipe_winsys*)rws;
402    r300screen->screen.destroy = r300_destroy_screen;
403    r300screen->screen.get_name = r300_get_name;
404    r300screen->screen.get_vendor = r300_get_vendor;
405    r300screen->screen.get_param = r300_get_param;
406    r300screen->screen.get_paramf = r300_get_paramf;
407    r300screen->screen.is_format_supported = r300_is_format_supported;
408    r300screen->screen.context_create = r300_create_context;
409
410    r300screen->screen.fence_reference = r300_fence_reference;
411    r300screen->screen.fence_signalled = r300_fence_signalled;
412    r300screen->screen.fence_finish = r300_fence_finish;
413
414    r300_init_screen_resource_functions(r300screen);
415
416    util_format_s3tc_init();
417
418    return &r300screen->screen;
419}
420
421struct r300_winsys_screen *
422r300_winsys_screen(struct pipe_screen *screen)
423{
424    return r300_screen(screen)->rws;
425}
426