summaryrefslogtreecommitdiff
path: root/src/gallium/drivers/r300/r300_screen.c
blob: da1d5ffe2fda9ddbb9cacf287bc613de8cbaff91 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
/*
 * Copyright 2008 Corbin Simpson <MostAwesomeDude@gmail.com>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * on the rights to use, copy, modify, merge, publish, distribute, sub
 * license, and/or sell copies of the Software, and to permit persons to whom
 * the Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice (including the next
 * paragraph) shall be included in all copies or substantial portions of the
 * Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
 * USE OR OTHER DEALINGS IN THE SOFTWARE. */

#include "r300_screen.h"

/* Return the identifier behind whom the brave coders responsible for this
 * amalgamation of code, sweat, and duct tape, routinely obscure their names.
 *
 * ...I should have just put "Corbin Simpson", but I'm not that cool.
 *
 * (Or egotistical. Yet.) */
static const char* r300_get_vendor(struct pipe_screen* pscreen)
{
    return "X.Org R300 Project";
}

static const char* chip_families[] = {
    "R300",
    "R350",
    "R360",
    "RV350",
    "RV370",
    "RV380",
    "R420",
    "R423",
    "R430",
    "R480",
    "R481",
    "RV410",
    "RS400",
    "RC410",
    "RS480",
    "RS482",
    "RS600",
    "RS690",
    "RS740",
    "RV515",
    "R520",
    "RV530",
    "R580",
    "RV560",
    "RV570"
};

static const char* r300_get_name(struct pipe_screen* pscreen)
{
    struct r300_screen* r300screen = r300_screen(pscreen);

    return chip_families[r300screen->caps->family];
}

static int r300_get_param(struct pipe_screen* pscreen, int param)
{
    struct r300_screen* r300screen = r300_screen(pscreen);

    switch (param) {
        /* XXX cases marked "IN THEORY" are possible on the hardware,
         * but haven't been implemented yet. */
        case PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS:
            /* XXX I'm told this goes up to 16 */
            return 8;
        case PIPE_CAP_NPOT_TEXTURES:
            /* IN THEORY */
            return 0;
        case PIPE_CAP_TWO_SIDED_STENCIL:
            if (r300screen->caps->is_r500) {
                return 1;
            } else {
                return 0;
            }
        case PIPE_CAP_GLSL:
            if (r300screen->caps->is_r500) {
                return 1;
            } else {
                return 0;
            }
        case PIPE_CAP_S3TC:
            return 1;
        case PIPE_CAP_ANISOTROPIC_FILTER:
            return 1;
        case PIPE_CAP_POINT_SPRITE:
            /* IN THEORY */
            return 0;
        case PIPE_CAP_MAX_RENDER_TARGETS:
            return 4;
        case PIPE_CAP_OCCLUSION_QUERY:
            /* IN THEORY */
            return 0;
        case PIPE_CAP_TEXTURE_SHADOW_MAP:
            /* IN THEORY */
            return 0;
        case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
            if (r300screen->caps->is_r500) {
                /* 13 == 4096x4096 */
                return 13;
            } else {
                /* 12 == 2048x2048 */
                return 12;
            }
        case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
            /* So, technically, the limit is the same as above, but some math
             * shows why this is silly. Assuming RGBA, 4cpp, we can see that
             * 4096*4096*4096 = 64.0 GiB exactly, so it's not exactly
             * practical. However, if at some point a game really wants this,
             * then we can remove or raise this limit. */
            if (r300screen->caps->is_r500) {
                /* 9 == 256x256x256 */
                return 9;
            } else {
                /* 8 == 128*128*128 */
                return 8;
            }
        case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
            if (r300screen->caps->is_r500) {
                /* 13 == 4096x4096 */
                return 13;
            } else {
                /* 12 == 2048x2048 */
                return 12;
            }
        case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
            return 1;
        case PIPE_CAP_TEXTURE_MIRROR_REPEAT:
            return 1;
        case PIPE_CAP_MAX_VERTEX_TEXTURE_UNITS:
            /* XXX guessing (what a terrible guess) */
            return 2;
        case PIPE_CAP_TGSI_CONT_SUPPORTED:
            /* XXX */
            return 0;
        default:
            debug_printf("r300: Implementation error: Bad param %d\n",
                param);
            return 0;
    }
}

static float r300_get_paramf(struct pipe_screen* pscreen, int param)
{
    struct r300_screen* r300screen = r300_screen(pscreen);

    switch (param) {
        case PIPE_CAP_MAX_LINE_WIDTH:
        case PIPE_CAP_MAX_LINE_WIDTH_AA:
        case PIPE_CAP_MAX_POINT_WIDTH:
        case PIPE_CAP_MAX_POINT_WIDTH_AA:
            /* The maximum dimensions of the colorbuffer are our practical
             * rendering limits. 2048 pixels should be enough for anybody. */
            if (r300screen->caps->is_r500) {
                return 4096.0f;
            } else {
                return 2048.0f;
            }
        case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
            return 16.0f;
        case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
            return 16.0f;
        default:
            debug_printf("r300: Implementation error: Bad paramf %d\n",
                param);
            return 0.0f;
    }
}

static boolean check_tex_2d_format(enum pipe_format format, uint32_t usage,
                                   boolean is_r500)
{
    switch (format) {
        /* Supported formats. */
        /* Colorbuffer */
        case PIPE_FORMAT_A4R4G4B4_UNORM:
        case PIPE_FORMAT_R5G6B5_UNORM:
        case PIPE_FORMAT_A1R5G5B5_UNORM:
            return usage &
                (PIPE_TEXTURE_USAGE_RENDER_TARGET |
                 PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
                 PIPE_TEXTURE_USAGE_PRIMARY);

        /* Texture */
        case PIPE_FORMAT_A8R8G8B8_SRGB:
        case PIPE_FORMAT_R8G8B8A8_SRGB:
        case PIPE_FORMAT_DXT1_RGB:
        case PIPE_FORMAT_DXT1_RGBA:
        case PIPE_FORMAT_DXT3_RGBA:
        case PIPE_FORMAT_DXT5_RGBA:
        case PIPE_FORMAT_YCBCR:
            return usage & PIPE_TEXTURE_USAGE_SAMPLER;

        /* Colorbuffer or texture */
        case PIPE_FORMAT_A8R8G8B8_UNORM:
        case PIPE_FORMAT_R8G8B8A8_UNORM:
        case PIPE_FORMAT_I8_UNORM:
            return usage &
                (PIPE_TEXTURE_USAGE_RENDER_TARGET |
                 PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
                 PIPE_TEXTURE_USAGE_PRIMARY |
                 PIPE_TEXTURE_USAGE_SAMPLER);

        /* Z buffer */
        case PIPE_FORMAT_Z16_UNORM:
            return usage & PIPE_TEXTURE_USAGE_DEPTH_STENCIL;

        /* Z buffer with stencil or texture */
        case PIPE_FORMAT_Z24S8_UNORM:
            return usage &
                (PIPE_TEXTURE_USAGE_DEPTH_STENCIL |
                 PIPE_TEXTURE_USAGE_SAMPLER);

        /* Definitely unsupported formats. */
        /* Non-usable Z buffer/stencil formats. */
        case PIPE_FORMAT_Z24X8_UNORM:
        case PIPE_FORMAT_S8Z24_UNORM:
        case PIPE_FORMAT_X8Z24_UNORM:
            debug_printf("r300: Note: Got unsupported format: %s in %s\n",
                pf_name(format), __FUNCTION__);
            return FALSE;

        /* XXX These don't even exist
        case PIPE_FORMAT_A32R32G32B32:
        case PIPE_FORMAT_A16R16G16B16: */
        /* XXX Insert YUV422 packed VYUY and YVYU here */
        /* XXX What the deuce is UV88? (r3xx accel page 14)
            debug_printf("r300: Warning: Got unimplemented format: %s in %s\n",
                pf_name(format), __FUNCTION__);
            return FALSE; */

        /* XXX Supported yet unimplemented r5xx formats: */
        /* XXX Again, what is UV1010 this time? (r5xx accel page 148) */
        /* XXX Even more that don't exist
        case PIPE_FORMAT_A10R10G10B10_UNORM:
        case PIPE_FORMAT_A2R10G10B10_UNORM:
        case PIPE_FORMAT_I10_UNORM:
            debug_printf(
                "r300: Warning: Got unimplemented r500 format: %s in %s\n",
                pf_name(format), __FUNCTION__);
            return FALSE; */

        default:
            /* Unknown format... */
            debug_printf("r300: Warning: Got unknown format: %s in %s\n",
                pf_name(format), __FUNCTION__);
            break;
    }

    return FALSE;
}

/* XXX moar targets */
static boolean r300_is_format_supported(struct pipe_screen* pscreen,
                                        enum pipe_format format,
                                        enum pipe_texture_target target,
                                        unsigned tex_usage,
                                        unsigned geom_flags)
{
    switch (target) {
        case PIPE_TEXTURE_2D:
            return check_tex_2d_format(format, tex_usage,
                r300_screen(pscreen)->caps->is_r500);
        case PIPE_TEXTURE_1D:
        case PIPE_TEXTURE_3D:
        case PIPE_TEXTURE_CUBE:
            debug_printf("r300: Implementation error: Unsupported format "
                    "target: %d\n", target);
            break;
        default:
            debug_printf("r300: Fatal: This is not a format target: %d\n",
                target);
            assert(0);
            break;
    }

    return FALSE;
}

static struct pipe_transfer*
r300_get_tex_transfer(struct pipe_screen *screen,
                      struct pipe_texture *texture,
                      unsigned face, unsigned level, unsigned zslice,
                      enum pipe_transfer_usage usage, unsigned x, unsigned y,
                      unsigned w, unsigned h)
{
    struct r300_texture *tex = (struct r300_texture *)texture;
    struct r300_transfer *trans;
    unsigned offset;  /* in bytes */

    /* XXX Add support for these things */
    if (texture->target == PIPE_TEXTURE_CUBE) {
        debug_printf("PIPE_TEXTURE_CUBE is not yet supported.\n");
        /* offset = tex->image_offset[level][face]; */
    }
    else if (texture->target == PIPE_TEXTURE_3D) {
        debug_printf("PIPE_TEXTURE_3D is not yet supported.\n");
        /* offset = tex->image_offset[level][zslice]; */
    }
    else {
        offset = tex->offset[level];
        assert(face == 0);
        assert(zslice == 0);
    }

    trans = CALLOC_STRUCT(r300_transfer);
    if (trans) {
        pipe_texture_reference(&trans->transfer.texture, texture);
        trans->transfer.format = trans->transfer.format;
        trans->transfer.width = w;
        trans->transfer.height = h;
        trans->transfer.block = texture->block;
        trans->transfer.nblocksx = texture->nblocksx[level];
        trans->transfer.nblocksy = texture->nblocksy[level];
        trans->transfer.stride = tex->stride;
        trans->transfer.usage = usage;
        trans->offset = offset;
    }
    return &trans->transfer;
}

static void
r300_tex_transfer_destroy(struct pipe_transfer *trans)
{
   pipe_texture_reference(&trans->texture, NULL);
   FREE(trans);
}

static void* r300_transfer_map(struct pipe_screen* screen,
                              struct pipe_transfer* transfer)
{
    struct r300_texture* tex = (struct r300_texture*)transfer->texture;
    char* map;
    unsigned flags = 0;

    if (transfer->usage != PIPE_TRANSFER_WRITE) {
        flags |= PIPE_BUFFER_USAGE_CPU_READ;
    }
    if (transfer->usage != PIPE_TRANSFER_READ) {
        flags |= PIPE_BUFFER_USAGE_CPU_WRITE;
    }
    
    map = pipe_buffer_map(screen, tex->buffer, flags);

    if (!map) {
        return NULL;
    }

    return map + r300_transfer(transfer)->offset +
        transfer->y / transfer->block.height * transfer->stride +
        transfer->x / transfer->block.width * transfer->block.size;
}

static void r300_transfer_unmap(struct pipe_screen* screen,
                                struct pipe_transfer* transfer)
{
    struct r300_texture* tex = (struct r300_texture*)transfer->texture;
    pipe_buffer_unmap(screen, tex->buffer);
}

static void r300_destroy_screen(struct pipe_screen* pscreen)
{
    struct r300_screen* r300screen = r300_screen(pscreen);

    FREE(r300screen->caps);
    FREE(r300screen);
}

struct pipe_screen* r300_create_screen(struct r300_winsys* r300_winsys)
{
    struct r300_screen* r300screen = CALLOC_STRUCT(r300_screen);
    struct r300_capabilities* caps = CALLOC_STRUCT(r300_capabilities);

    if (!r300screen || !caps)
        return NULL;

    caps->pci_id = r300_winsys->pci_id;

    r300_parse_chipset(caps);

    r300screen->caps = caps;
    r300screen->screen.winsys = (struct pipe_winsys*)r300_winsys;
    r300screen->screen.destroy = r300_destroy_screen;
    r300screen->screen.get_name = r300_get_name;
    r300screen->screen.get_vendor = r300_get_vendor;
    r300screen->screen.get_param = r300_get_param;
    r300screen->screen.get_paramf = r300_get_paramf;
    r300screen->screen.is_format_supported = r300_is_format_supported;
    r300screen->screen.get_tex_transfer = r300_get_tex_transfer;
    r300screen->screen.tex_transfer_destroy = r300_tex_transfer_destroy;
    r300screen->screen.transfer_map = r300_transfer_map;
    r300screen->screen.transfer_unmap = r300_transfer_unmap;

    r300_init_screen_texture_functions(&r300screen->screen);
    u_simple_screen_init(&r300screen->screen);

    return &r300screen->screen;
}