r300_screen.c revision ebe2b546633a3593c54190bb1f2d372d70de14cd 
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            return 1;
117
118        /* Unsupported features (boolean caps). */
119        case PIPE_CAP_TIMER_QUERY:
120        case PIPE_CAP_DUAL_SOURCE_BLEND:
121        case PIPE_CAP_TGSI_CONT_SUPPORTED:
122        case PIPE_CAP_INDEP_BLEND_ENABLE:
123        case PIPE_CAP_INDEP_BLEND_FUNC:
124            return 0;
125
126        /* Texturing. */
127        case PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS:
128        case PIPE_CAP_MAX_COMBINED_SAMPLERS:
129            return r300screen->caps.num_tex_units;
130        case PIPE_CAP_MAX_VERTEX_TEXTURE_UNITS:
131            return 0;
132        case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
133        case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
134        case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
135            /* 13 == 4096, 12 == 2048 */
136            return is_r500 ? 13 : 12;
137
138        /* Render targets. */
139        case PIPE_CAP_MAX_RENDER_TARGETS:
140            return 4;
141
142        /* General shader limits and features. */
143        case PIPE_CAP_SM3:
144            return is_r500 ? 1 : 0;
145        case PIPE_CAP_MAX_CONST_BUFFERS:
146            return 1;
147        case PIPE_CAP_MAX_CONST_BUFFER_SIZE:
148            return 256;
149
150        /* Fragment coordinate conventions. */
151        case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
152        case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
153	    return 1;
154        case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
155        case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
156            return 0;
157
158        /* Fragment shader limits. */
159        case PIPE_CAP_MAX_FS_INSTRUCTIONS:
160            return is_r500 || is_r400 ? 512 : 96;
161        case PIPE_CAP_MAX_FS_ALU_INSTRUCTIONS:
162            return is_r500 || is_r400 ? 512 : 64;
163        case PIPE_CAP_MAX_FS_TEX_INSTRUCTIONS:
164            return is_r500 || is_r400 ? 512 : 32;
165        case PIPE_CAP_MAX_FS_TEX_INDIRECTIONS:
166            return is_r500 ? 511 : 4;
167        case PIPE_CAP_MAX_FS_CONTROL_FLOW_DEPTH:
168            return is_r500 ? 64 : 0; /* Actually unlimited on r500. */
169        case PIPE_CAP_MAX_FS_INPUTS:
170            /* 2 colors + 8 texcoords are always supported
171             * (minus fog and wpos).
172             *
173             * R500 has the ability to turn 3rd and 4th color into
174             * additional texcoords but there is no two-sided color
175             * selection then. However the facing bit can be used instead. */
176            return 10;
177        case PIPE_CAP_MAX_FS_CONSTS:
178            return is_r500 ? 256 : 32;
179        case PIPE_CAP_MAX_FS_TEMPS:
180            return is_r500 ? 128 : is_r400 ? 64 : 32;
181        case PIPE_CAP_MAX_FS_ADDRS:
182            return 0;
183        case PIPE_CAP_MAX_FS_PREDS:
184            return is_r500 ? 1 : 0;
185
186        /* Vertex shader limits. */
187        case PIPE_CAP_MAX_VS_INSTRUCTIONS:
188        case PIPE_CAP_MAX_VS_ALU_INSTRUCTIONS:
189            return is_r500 ? 1024 : 256;
190        case PIPE_CAP_MAX_VS_TEX_INSTRUCTIONS:
191        case PIPE_CAP_MAX_VS_TEX_INDIRECTIONS:
192            return 0;
193        case PIPE_CAP_MAX_VS_CONTROL_FLOW_DEPTH:
194            return is_r500 ? 4 : 0; /* For loops; not sure about conditionals. */
195        case PIPE_CAP_MAX_VS_INPUTS:
196            return 16;
197        case PIPE_CAP_MAX_VS_CONSTS:
198            return 256;
199        case PIPE_CAP_MAX_VS_TEMPS:
200            return 32;
201        case PIPE_CAP_MAX_VS_ADDRS:
202            return 1; /* XXX guessed */
203        case PIPE_CAP_MAX_VS_PREDS:
204            return is_r500 ? 4 : 0; /* XXX guessed. */
205
206        default:
207            fprintf(stderr, "r300: Implementation error: Bad param %d\n",
208                param);
209            return 0;
210    }
211}
212
213static float r300_get_paramf(struct pipe_screen* pscreen, enum pipe_cap param)
214{
215    struct r300_screen* r300screen = r300_screen(pscreen);
216
217    switch (param) {
218        case PIPE_CAP_MAX_LINE_WIDTH:
219        case PIPE_CAP_MAX_LINE_WIDTH_AA:
220        case PIPE_CAP_MAX_POINT_WIDTH:
221        case PIPE_CAP_MAX_POINT_WIDTH_AA:
222            /* The maximum dimensions of the colorbuffer are our practical
223             * rendering limits. 2048 pixels should be enough for anybody. */
224            if (r300screen->caps.is_r500) {
225                return 4096.0f;
226            } else if (r300screen->caps.is_r400) {
227                return 4021.0f;
228            } else {
229                return 2560.0f;
230            }
231        case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
232            return 16.0f;
233        case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
234            return 16.0f;
235        default:
236            fprintf(stderr, "r300: Implementation error: Bad paramf %d\n",
237                param);
238            return 0.0f;
239    }
240}
241
242static boolean r300_is_format_supported(struct pipe_screen* screen,
243                                        enum pipe_format format,
244                                        enum pipe_texture_target target,
245                                        unsigned sample_count,
246                                        unsigned usage,
247                                        unsigned geom_flags)
248{
249    uint32_t retval = 0;
250    boolean is_r500 = r300_screen(screen)->caps.is_r500;
251    boolean is_r400 = r300_screen(screen)->caps.is_r400;
252    boolean is_rv350 = r300_screen(screen)->caps.is_rv350;
253    boolean is_z24 = format == PIPE_FORMAT_X8Z24_UNORM ||
254                     format == PIPE_FORMAT_S8_USCALED_Z24_UNORM;
255    boolean is_color2101010 = format == PIPE_FORMAT_R10G10B10A2_UNORM ||
256                              format == PIPE_FORMAT_R10G10B10X2_SNORM ||
257                              format == PIPE_FORMAT_B10G10R10A2_UNORM ||
258                              format == PIPE_FORMAT_R10SG10SB10SA2U_NORM;
259    boolean is_ati1n = format == PIPE_FORMAT_RGTC1_UNORM ||
260                       format == PIPE_FORMAT_RGTC1_SNORM;
261    boolean is_ati2n = format == PIPE_FORMAT_RGTC2_UNORM ||
262                       format == PIPE_FORMAT_RGTC2_SNORM;
263    boolean is_half_float = format == PIPE_FORMAT_R16_FLOAT ||
264                            format == PIPE_FORMAT_R16G16_FLOAT ||
265                            format == PIPE_FORMAT_R16G16B16_FLOAT ||
266                            format == PIPE_FORMAT_R16G16B16A16_FLOAT;
267
268    if (target >= PIPE_MAX_TEXTURE_TYPES) {
269        fprintf(stderr, "r300: Implementation error: Received bogus texture "
270            "target %d in %s\n", target, __FUNCTION__);
271        return FALSE;
272    }
273
274   if (sample_count > 1)
275      return FALSE;
276
277    /* Check sampler format support. */
278    if ((usage & PIPE_BIND_SAMPLER_VIEW) &&
279        /* Z24 cannot be sampled from on non-r5xx. */
280        (is_r500 || !is_z24) &&
281        /* ATI1N is r5xx-only. */
282        (is_r500 || !is_ati1n) &&
283        /* ATI2N is supported on r4xx-r5xx. */
284        (is_r400 || is_r500 || !is_ati2n) &&
285        r300_is_sampler_format_supported(format)) {
286        retval |= PIPE_BIND_SAMPLER_VIEW;
287    }
288
289    /* Check colorbuffer format support. */
290    if ((usage & (PIPE_BIND_RENDER_TARGET |
291                  PIPE_BIND_DISPLAY_TARGET |
292                  PIPE_BIND_SCANOUT |
293                  PIPE_BIND_SHARED)) &&
294        /* 2101010 cannot be rendered to on non-r5xx. */
295        (is_r500 || !is_color2101010) &&
296        r300_is_colorbuffer_format_supported(format)) {
297        retval |= usage &
298            (PIPE_BIND_RENDER_TARGET |
299             PIPE_BIND_DISPLAY_TARGET |
300             PIPE_BIND_SCANOUT |
301             PIPE_BIND_SHARED);
302    }
303
304    /* Check depth-stencil format support. */
305    if (usage & PIPE_BIND_DEPTH_STENCIL &&
306        r300_is_zs_format_supported(format)) {
307        retval |= PIPE_BIND_DEPTH_STENCIL;
308    }
309
310    /* Check vertex buffer format support. */
311    if (usage & PIPE_BIND_VERTEX_BUFFER &&
312        /* Half float is supported on >= RV350. */
313        (is_rv350 || !is_half_float) &&
314        r300_translate_vertex_data_type(format) != R300_INVALID_FORMAT) {
315        retval |= PIPE_BIND_VERTEX_BUFFER;
316    }
317
318    return retval == usage;
319}
320
321static void r300_destroy_screen(struct pipe_screen* pscreen)
322{
323    struct r300_screen* r300screen = r300_screen(pscreen);
324    struct r300_winsys_screen *rws = r300_winsys_screen(pscreen);
325
326    if (rws)
327      rws->destroy(rws);
328
329    FREE(r300screen);
330}
331
332static void r300_fence_reference(struct pipe_screen *screen,
333                                 struct pipe_fence_handle **ptr,
334                                 struct pipe_fence_handle *fence)
335{
336    struct r300_fence **oldf = (struct r300_fence**)ptr;
337    struct r300_fence *newf = (struct r300_fence*)fence;
338
339    if (pipe_reference(&(*oldf)->reference, &newf->reference))
340        FREE(*oldf);
341
342    *ptr = fence;
343}
344
345static int r300_fence_signalled(struct pipe_screen *screen,
346                                struct pipe_fence_handle *fence,
347                                unsigned flags)
348{
349    struct r300_fence *rfence = (struct r300_fence*)fence;
350
351    return rfence->signalled ? 0 : 1; /* 0 == success */
352}
353
354static int r300_fence_finish(struct pipe_screen *screen,
355                             struct pipe_fence_handle *fence,
356                             unsigned flags)
357{
358    struct r300_fence *rfence = (struct r300_fence*)fence;
359
360    r300_finish(rfence->ctx);
361    rfence->signalled = TRUE;
362    return 0; /* 0 == success */
363}
364
365struct pipe_screen* r300_create_screen(struct r300_winsys_screen *rws)
366{
367    struct r300_screen *r300screen = CALLOC_STRUCT(r300_screen);
368
369    if (!r300screen) {
370        FREE(r300screen);
371        return NULL;
372    }
373
374    r300screen->caps.pci_id = rws->get_value(rws, R300_VID_PCI_ID);
375    r300screen->caps.num_frag_pipes = rws->get_value(rws, R300_VID_GB_PIPES);
376    r300screen->caps.num_z_pipes = rws->get_value(rws, R300_VID_Z_PIPES);
377
378    r300_init_debug(r300screen);
379    r300_parse_chipset(&r300screen->caps);
380
381    r300screen->rws = rws;
382    r300screen->screen.winsys = (struct pipe_winsys*)rws;
383    r300screen->screen.destroy = r300_destroy_screen;
384    r300screen->screen.get_name = r300_get_name;
385    r300screen->screen.get_vendor = r300_get_vendor;
386    r300screen->screen.get_param = r300_get_param;
387    r300screen->screen.get_paramf = r300_get_paramf;
388    r300screen->screen.is_format_supported = r300_is_format_supported;
389    r300screen->screen.context_create = r300_create_context;
390
391    r300screen->screen.fence_reference = r300_fence_reference;
392    r300screen->screen.fence_signalled = r300_fence_signalled;
393    r300screen->screen.fence_finish = r300_fence_finish;
394
395    r300_init_screen_resource_functions(r300screen);
396
397    util_format_s3tc_init();
398
399    return &r300screen->screen;
400}
401
402struct r300_winsys_screen *
403r300_winsys_screen(struct pipe_screen *screen)
404{
405    return r300_screen(screen)->rws;
406}
407