r300_screen.c revision 08edbe9f14712f719f838769c61123f83768af76 
1/*
2 * Copyright 2008 Corbin Simpson <MostAwesomeDude@gmail.com>
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * on the rights to use, copy, modify, merge, publish, distribute, sub
8 * license, and/or sell copies of the Software, and to permit persons to whom
9 * the Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
19 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
20 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
21 * USE OR OTHER DEALINGS IN THE SOFTWARE. */
22
23#include "pipe/p_inlines.h"
24#include "util/u_format.h"
25#include "util/u_memory.h"
26#include "util/u_simple_screen.h"
27
28#include "r300_context.h"
29#include "r300_screen.h"
30#include "r300_texture.h"
31
32#include "radeon_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, int param)
81{
82    struct r300_screen* r300screen = r300_screen(pscreen);
83
84    switch (param) {
85        case PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS:
86        case PIPE_CAP_MAX_COMBINED_SAMPLERS:
87            /* XXX I'm told this goes up to 16 */
88            return 8;
89        case PIPE_CAP_NPOT_TEXTURES:
90            /* XXX enable now to get GL2.1 API,
91             * figure out later how to emulate this */
92            return 1;
93        case PIPE_CAP_TWO_SIDED_STENCIL:
94            if (r300screen->caps->is_r500) {
95                return 1;
96            } else {
97                return 0;
98            }
99        case PIPE_CAP_GLSL:
100            /* I'll be frank. This is a lie.
101             *
102             * We don't truly support GLSL on any of this driver's chipsets.
103             * To be fair, no chipset supports the full GLSL specification
104             * to the best of our knowledge, but some of the less esoteric
105             * features are still missing here.
106             *
107             * Rather than cripple ourselves intentionally, I'm going to set
108             * this flag, and as Gallium's interface continues to change, I
109             * hope that this single monolithic GLSL enable can slowly get
110             * split down into many different pieces and the state tracker
111             * will handle fallbacks transparently, like it should.
112             *
113             * ~ C.
114             */
115            return 1;
116        case PIPE_CAP_ANISOTROPIC_FILTER:
117            return 1;
118        case PIPE_CAP_POINT_SPRITE:
119            return 1;
120        case PIPE_CAP_MAX_RENDER_TARGETS:
121            return 4;
122        case PIPE_CAP_OCCLUSION_QUERY:
123            return 1;
124        case PIPE_CAP_TEXTURE_SHADOW_MAP:
125            return 1;
126        case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
127        case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
128        case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
129            if (r300screen->caps->is_r500) {
130                /* 13 == 4096 */
131                return 13;
132            } else {
133                /* 12 == 2048 */
134                return 12;
135            }
136        case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
137            return 1;
138        case PIPE_CAP_TEXTURE_MIRROR_REPEAT:
139            return 1;
140        case PIPE_CAP_MAX_VERTEX_TEXTURE_UNITS:
141            return 0;
142        case PIPE_CAP_TGSI_CONT_SUPPORTED:
143            return 0;
144        case PIPE_CAP_BLEND_EQUATION_SEPARATE:
145            return 1;
146        case PIPE_CAP_SM3:
147            if (r300screen->caps->is_r500) {
148                return 1;
149            } else {
150                return 0;
151            }
152        default:
153            debug_printf("r300: Implementation error: Bad param %d\n",
154                param);
155            return 0;
156    }
157}
158
159static float r300_get_paramf(struct pipe_screen* pscreen, int param)
160{
161    struct r300_screen* r300screen = r300_screen(pscreen);
162
163    switch (param) {
164        case PIPE_CAP_MAX_LINE_WIDTH:
165        case PIPE_CAP_MAX_LINE_WIDTH_AA:
166        case PIPE_CAP_MAX_POINT_WIDTH:
167        case PIPE_CAP_MAX_POINT_WIDTH_AA:
168            /* The maximum dimensions of the colorbuffer are our practical
169             * rendering limits. 2048 pixels should be enough for anybody. */
170            if (r300screen->caps->is_r500) {
171                return 4096.0f;
172            } else {
173                return 2048.0f;
174            }
175        case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
176            return 16.0f;
177        case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
178            return 16.0f;
179        default:
180            debug_printf("r300: Implementation error: Bad paramf %d\n",
181                param);
182            return 0.0f;
183    }
184}
185
186static boolean check_tex_format(enum pipe_format format, uint32_t usage,
187                                boolean is_r500)
188{
189    uint32_t retval = 0;
190
191    switch (format) {
192        /* Supported formats. */
193        /* Colorbuffer */
194        case PIPE_FORMAT_A4R4G4B4_UNORM:
195        case PIPE_FORMAT_R5G6B5_UNORM:
196        case PIPE_FORMAT_A1R5G5B5_UNORM:
197            retval = usage &
198                (PIPE_TEXTURE_USAGE_RENDER_TARGET |
199                 PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
200                 PIPE_TEXTURE_USAGE_PRIMARY);
201            break;
202
203        /* Texture */
204        case PIPE_FORMAT_A8R8G8B8_SRGB:
205        case PIPE_FORMAT_R8G8B8A8_SRGB:
206        case PIPE_FORMAT_DXT1_RGB:
207        case PIPE_FORMAT_DXT1_RGBA:
208        case PIPE_FORMAT_DXT3_RGBA:
209        case PIPE_FORMAT_DXT5_RGBA:
210        case PIPE_FORMAT_YCBCR:
211        case PIPE_FORMAT_L8_UNORM:
212        case PIPE_FORMAT_A8L8_UNORM:
213            retval = usage & PIPE_TEXTURE_USAGE_SAMPLER;
214            break;
215
216        /* Colorbuffer or texture */
217        case PIPE_FORMAT_A8R8G8B8_UNORM:
218        case PIPE_FORMAT_X8R8G8B8_UNORM:
219        case PIPE_FORMAT_R8G8B8A8_UNORM:
220        case PIPE_FORMAT_R8G8B8X8_UNORM:
221        case PIPE_FORMAT_I8_UNORM:
222            retval = usage &
223                (PIPE_TEXTURE_USAGE_RENDER_TARGET |
224                 PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
225                 PIPE_TEXTURE_USAGE_PRIMARY |
226                 PIPE_TEXTURE_USAGE_SAMPLER);
227            break;
228
229        /* Z buffer or texture */
230        case PIPE_FORMAT_Z16_UNORM:
231            retval = usage &
232                (PIPE_TEXTURE_USAGE_DEPTH_STENCIL |
233                 PIPE_TEXTURE_USAGE_SAMPLER);
234            break;
235
236        /* 24bit Z buffer can only be used as a texture on R500. */
237        case PIPE_FORMAT_Z24X8_UNORM:
238        /* Z buffer with stencil or texture */
239        case PIPE_FORMAT_Z24S8_UNORM:
240            retval = usage &
241                (PIPE_TEXTURE_USAGE_DEPTH_STENCIL |
242                 (is_r500 ? PIPE_TEXTURE_USAGE_SAMPLER : 0));
243            break;
244
245        /* Definitely unsupported formats. */
246        /* Non-usable Z buffer/stencil formats. */
247        case PIPE_FORMAT_Z32_UNORM:
248        case PIPE_FORMAT_S8Z24_UNORM:
249        case PIPE_FORMAT_X8Z24_UNORM:
250            debug_printf("r300: Note: Got unsupported format: %s in %s\n",
251                pf_name(format), __FUNCTION__);
252            return FALSE;
253
254        /* XXX These don't even exist
255        case PIPE_FORMAT_A32R32G32B32:
256        case PIPE_FORMAT_A16R16G16B16: */
257        /* XXX What the deuce is UV88? (r3xx accel page 14)
258            debug_printf("r300: Warning: Got unimplemented format: %s in %s\n",
259                pf_name(format), __FUNCTION__);
260            return FALSE; */
261
262        /* XXX Supported yet unimplemented r5xx formats: */
263        /* XXX Again, what is UV1010 this time? (r5xx accel page 148) */
264        /* XXX Even more that don't exist
265        case PIPE_FORMAT_A10R10G10B10_UNORM:
266        case PIPE_FORMAT_A2R10G10B10_UNORM:
267        case PIPE_FORMAT_I10_UNORM:
268            debug_printf(
269                "r300: Warning: Got unimplemented r500 format: %s in %s\n",
270                pf_name(format), __FUNCTION__);
271            return FALSE; */
272
273        default:
274            /* Unknown format... */
275            debug_printf("r300: Warning: Got unknown format: %s in %s\n",
276                pf_name(format), __FUNCTION__);
277            break;
278    }
279
280    /* If usage was a mask that contained multiple bits, and not all of them
281     * are supported, this will catch that and return FALSE.
282     * e.g. usage = 2 | 4; retval = 4; (retval >= usage) == FALSE
283     *
284     * This also returns FALSE for any unknown formats.
285     */
286    return (retval >= usage);
287}
288
289static boolean r300_is_format_supported(struct pipe_screen* pscreen,
290                                        enum pipe_format format,
291                                        enum pipe_texture_target target,
292                                        unsigned tex_usage,
293                                        unsigned geom_flags)
294{
295    switch (target) {
296        case PIPE_TEXTURE_1D:   /* handle 1D textures as 2D ones */
297        case PIPE_TEXTURE_2D:
298        case PIPE_TEXTURE_3D:
299        case PIPE_TEXTURE_CUBE:
300            return check_tex_format(format, tex_usage,
301                r300_screen(pscreen)->caps->is_r500);
302
303        default:
304            debug_printf("r300: Fatal: This is not a format target: %d\n",
305                target);
306            assert(0);
307            break;
308    }
309
310    return FALSE;
311}
312
313static struct pipe_transfer*
314r300_get_tex_transfer(struct pipe_screen *screen,
315                      struct pipe_texture *texture,
316                      unsigned face, unsigned level, unsigned zslice,
317                      enum pipe_transfer_usage usage, unsigned x, unsigned y,
318                      unsigned w, unsigned h)
319{
320    struct r300_texture *tex = (struct r300_texture *)texture;
321    struct r300_transfer *trans;
322    unsigned offset;
323
324    offset = r300_texture_get_offset(tex, level, zslice, face);  /* in bytes */
325
326    trans = CALLOC_STRUCT(r300_transfer);
327    if (trans) {
328        pipe_texture_reference(&trans->transfer.texture, texture);
329        trans->transfer.x = x;
330        trans->transfer.y = y;
331        trans->transfer.width = w;
332        trans->transfer.height = h;
333        trans->transfer.stride = r300_texture_get_stride(tex, level);
334        trans->transfer.usage = usage;
335
336        /* XXX not sure whether it's required to set these two,
337               the driver doesn't use them */
338        trans->transfer.zslice = zslice;
339        trans->transfer.face = face;
340
341        trans->offset = offset;
342    }
343    return &trans->transfer;
344}
345
346static void
347r300_tex_transfer_destroy(struct pipe_transfer *trans)
348{
349   pipe_texture_reference(&trans->texture, NULL);
350   FREE(trans);
351}
352
353static void* r300_transfer_map(struct pipe_screen* screen,
354                              struct pipe_transfer* transfer)
355{
356    struct r300_texture* tex = (struct r300_texture*)transfer->texture;
357    char* map;
358    enum pipe_format format = tex->tex.format;
359
360    map = pipe_buffer_map(screen, tex->buffer,
361                          pipe_transfer_buffer_flags(transfer));
362
363    if (!map) {
364        return NULL;
365    }
366
367    return map + r300_transfer(transfer)->offset +
368        transfer->y / util_format_get_blockheight(format) * transfer->stride +
369        transfer->x / util_format_get_blockwidth(format) * util_format_get_blocksize(format);
370}
371
372static void r300_transfer_unmap(struct pipe_screen* screen,
373                                struct pipe_transfer* transfer)
374{
375    struct r300_texture* tex = (struct r300_texture*)transfer->texture;
376    pipe_buffer_unmap(screen, tex->buffer);
377}
378
379static void r300_destroy_screen(struct pipe_screen* pscreen)
380{
381    struct r300_screen* r300screen = r300_screen(pscreen);
382
383    FREE(r300screen->caps);
384    FREE(r300screen);
385}
386
387struct pipe_screen* r300_create_screen(struct radeon_winsys* radeon_winsys)
388{
389    struct r300_screen* r300screen = CALLOC_STRUCT(r300_screen);
390    struct r300_capabilities* caps = CALLOC_STRUCT(r300_capabilities);
391
392    if (!r300screen || !caps)
393        return NULL;
394
395    caps->pci_id = radeon_winsys->pci_id;
396    caps->num_frag_pipes = radeon_winsys->gb_pipes;
397    caps->num_z_pipes = radeon_winsys->z_pipes;
398
399    r300_init_debug(r300screen);
400    r300_parse_chipset(caps);
401
402    r300screen->caps = caps;
403    r300screen->screen.winsys = (struct pipe_winsys*)radeon_winsys;
404    r300screen->screen.destroy = r300_destroy_screen;
405    r300screen->screen.get_name = r300_get_name;
406    r300screen->screen.get_vendor = r300_get_vendor;
407    r300screen->screen.get_param = r300_get_param;
408    r300screen->screen.get_paramf = r300_get_paramf;
409    r300screen->screen.is_format_supported = r300_is_format_supported;
410    r300screen->screen.get_tex_transfer = r300_get_tex_transfer;
411    r300screen->screen.tex_transfer_destroy = r300_tex_transfer_destroy;
412    r300screen->screen.transfer_map = r300_transfer_map;
413    r300screen->screen.transfer_unmap = r300_transfer_unmap;
414
415    r300_init_screen_texture_functions(&r300screen->screen);
416    u_simple_screen_init(&r300screen->screen);
417
418    return &r300screen->screen;
419}
420