r300_screen.c revision 67b60b99348f50ead92e617a5085422da9d8c022 
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 "util/u_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#include "r300_winsys.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, int param)
82{
83    struct r300_screen* r300screen = r300_screen(pscreen);
84
85    switch (param) {
86        case PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS:
87        case PIPE_CAP_MAX_COMBINED_SAMPLERS:
88            /* XXX I'm told this goes up to 16 */
89            return 8;
90        case PIPE_CAP_NPOT_TEXTURES:
91            /* XXX enable now to get GL2.1 API,
92             * figure out later how to emulate this */
93            return 1;
94        case PIPE_CAP_TWO_SIDED_STENCIL:
95            if (r300screen->caps->is_r500) {
96                return 1;
97            } else {
98                return 0;
99            }
100        case PIPE_CAP_GLSL:
101            /* I'll be frank. This is a lie.
102             *
103             * We don't truly support GLSL on any of this driver's chipsets.
104             * To be fair, no chipset supports the full GLSL specification
105             * to the best of our knowledge, but some of the less esoteric
106             * features are still missing here.
107             *
108             * Rather than cripple ourselves intentionally, I'm going to set
109             * this flag, and as Gallium's interface continues to change, I
110             * hope that this single monolithic GLSL enable can slowly get
111             * split down into many different pieces and the state tracker
112             * will handle fallbacks transparently, like it should.
113             *
114             * ~ C.
115             */
116            return 1;
117        case PIPE_CAP_DUAL_SOURCE_BLEND:
118            return 0;
119        case PIPE_CAP_ANISOTROPIC_FILTER:
120            return 1;
121        case PIPE_CAP_POINT_SPRITE:
122            return 1;
123        case PIPE_CAP_MAX_RENDER_TARGETS:
124            return 4;
125        case PIPE_CAP_OCCLUSION_QUERY:
126            return 1;
127        case PIPE_CAP_TEXTURE_SHADOW_MAP:
128            return 1;
129        case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
130        case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
131        case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
132            if (r300screen->caps->is_r500) {
133                /* 13 == 4096 */
134                return 13;
135            } else {
136                /* 12 == 2048 */
137                return 12;
138            }
139        case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
140            return 1;
141        case PIPE_CAP_TEXTURE_MIRROR_REPEAT:
142            return 1;
143        case PIPE_CAP_MAX_VERTEX_TEXTURE_UNITS:
144            return 0;
145        case PIPE_CAP_TGSI_CONT_SUPPORTED:
146            return 0;
147        case PIPE_CAP_BLEND_EQUATION_SEPARATE:
148            return 1;
149        case PIPE_CAP_SM3:
150            if (r300screen->caps->is_r500) {
151                return 1;
152            } else {
153                return 0;
154            }
155        case PIPE_CAP_INDEP_BLEND_ENABLE:
156            if (r300screen->caps->is_r500) {
157                return 1;
158            } else {
159                return 0;
160            }
161        case PIPE_CAP_INDEP_BLEND_FUNC:
162            return 0;
163        case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
164        case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
165	    return 1;
166        case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
167        case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
168            return 0;
169        default:
170            debug_printf("r300: Implementation error: Bad param %d\n",
171                param);
172            return 0;
173    }
174}
175
176static float r300_get_paramf(struct pipe_screen* pscreen, int param)
177{
178    struct r300_screen* r300screen = r300_screen(pscreen);
179
180    switch (param) {
181        case PIPE_CAP_MAX_LINE_WIDTH:
182        case PIPE_CAP_MAX_LINE_WIDTH_AA:
183        case PIPE_CAP_MAX_POINT_WIDTH:
184        case PIPE_CAP_MAX_POINT_WIDTH_AA:
185            /* The maximum dimensions of the colorbuffer are our practical
186             * rendering limits. 2048 pixels should be enough for anybody. */
187            if (r300screen->caps->is_r500) {
188                return 4096.0f;
189            } else if (r300screen->caps->is_r400) {
190                return 4021.0f;
191            } else {
192                return 2560.0f;
193            }
194        case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
195            return 16.0f;
196        case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
197            return 16.0f;
198        default:
199            debug_printf("r300: Implementation error: Bad paramf %d\n",
200                param);
201            return 0.0f;
202    }
203}
204
205static boolean r300_is_format_supported(struct pipe_screen* screen,
206                                        enum pipe_format format,
207                                        enum pipe_texture_target target,
208                                        unsigned usage,
209                                        unsigned geom_flags)
210{
211    uint32_t retval = 0;
212    boolean is_r500 = r300_screen(screen)->caps->is_r500;
213
214    if (target >= PIPE_MAX_TEXTURE_TYPES) {
215        debug_printf("r300: Implementation error: Received bogus texture "
216            "target %d in %s\n", target, __FUNCTION__);
217        return FALSE;
218    }
219
220    switch (format) {
221        /* Supported formats. */
222        /* Colorbuffer */
223        case PIPE_FORMAT_A4R4G4B4_UNORM:
224        case PIPE_FORMAT_R5G6B5_UNORM:
225        case PIPE_FORMAT_A1R5G5B5_UNORM:
226        case PIPE_FORMAT_A8_UNORM:
227        case PIPE_FORMAT_L8_UNORM:
228            retval = usage &
229                (PIPE_TEXTURE_USAGE_RENDER_TARGET |
230                 PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
231                 PIPE_TEXTURE_USAGE_PRIMARY);
232            break;
233
234        /* Texture */
235        case PIPE_FORMAT_A8R8G8B8_SRGB:
236        case PIPE_FORMAT_R8G8B8A8_SRGB:
237        case PIPE_FORMAT_DXT1_RGB:
238        case PIPE_FORMAT_DXT1_RGBA:
239        case PIPE_FORMAT_DXT3_RGBA:
240        case PIPE_FORMAT_DXT5_RGBA:
241        case PIPE_FORMAT_YCBCR:
242        case PIPE_FORMAT_L8_SRGB:
243        case PIPE_FORMAT_A8L8_SRGB:
244        case PIPE_FORMAT_A8L8_UNORM:
245            retval = usage & PIPE_TEXTURE_USAGE_SAMPLER;
246            break;
247
248        /* Colorbuffer or texture */
249        case PIPE_FORMAT_A8R8G8B8_UNORM:
250        case PIPE_FORMAT_X8R8G8B8_UNORM:
251        case PIPE_FORMAT_R8G8B8A8_UNORM:
252        case PIPE_FORMAT_R8G8B8X8_UNORM:
253        case PIPE_FORMAT_I8_UNORM:
254            retval = usage &
255                (PIPE_TEXTURE_USAGE_RENDER_TARGET |
256                 PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
257                 PIPE_TEXTURE_USAGE_PRIMARY |
258                 PIPE_TEXTURE_USAGE_SAMPLER);
259            break;
260
261        /* Z buffer or texture */
262        case PIPE_FORMAT_Z16_UNORM:
263            retval = usage &
264                (PIPE_TEXTURE_USAGE_DEPTH_STENCIL |
265                 PIPE_TEXTURE_USAGE_SAMPLER);
266            break;
267
268        /* 24bit Z buffer can only be used as a texture on R500. */
269        case PIPE_FORMAT_Z24X8_UNORM:
270        /* Z buffer with stencil or texture */
271        case PIPE_FORMAT_Z24S8_UNORM:
272            retval = usage &
273                (PIPE_TEXTURE_USAGE_DEPTH_STENCIL |
274                 (is_r500 ? PIPE_TEXTURE_USAGE_SAMPLER : 0));
275            break;
276
277        /* Definitely unsupported formats. */
278        /* Non-usable Z buffer/stencil formats. */
279        case PIPE_FORMAT_Z32_UNORM:
280        case PIPE_FORMAT_S8Z24_UNORM:
281        case PIPE_FORMAT_X8Z24_UNORM:
282            SCREEN_DBG(r300_screen(screen), DBG_TEX,
283                       "r300: Note: Got unsupported format: %s in %s\n",
284                       pf_name(format), __FUNCTION__);
285            return FALSE;
286
287        /* XXX Add all remaining gallium-supported formats,
288         * see util/u_format.csv. */
289
290        default:
291            /* Unknown format... */
292            debug_printf("r300: Warning: Got unknown format: %s in %s\n",
293                pf_name(format), __FUNCTION__);
294            break;
295    }
296
297    /* If usage was a mask that contained multiple bits, and not all of them
298     * are supported, this will catch that and return FALSE.
299     * e.g. usage = 2 | 4; retval = 4; (retval >= usage) == FALSE
300     *
301     * This also returns FALSE for any unknown formats.
302     */
303    return (retval >= usage);
304}
305
306static struct pipe_transfer*
307r300_get_tex_transfer(struct pipe_screen *screen,
308                      struct pipe_texture *texture,
309                      unsigned face, unsigned level, unsigned zslice,
310                      enum pipe_transfer_usage usage, unsigned x, unsigned y,
311                      unsigned w, unsigned h)
312{
313    struct r300_texture *tex = (struct r300_texture *)texture;
314    struct r300_transfer *trans;
315    struct r300_screen *rscreen = r300_screen(screen);
316    unsigned offset;
317
318    offset = r300_texture_get_offset(tex, level, zslice, face);  /* in bytes */
319
320    trans = CALLOC_STRUCT(r300_transfer);
321    if (trans) {
322        pipe_texture_reference(&trans->transfer.texture, texture);
323        trans->transfer.x = x;
324        trans->transfer.y = y;
325        trans->transfer.width = w;
326        trans->transfer.height = h;
327        trans->transfer.stride = r300_texture_get_stride(rscreen, tex, level);
328        trans->transfer.usage = usage;
329        trans->transfer.zslice = zslice;
330        trans->transfer.face = face;
331
332        trans->offset = offset;
333    }
334    return &trans->transfer;
335}
336
337static void
338r300_tex_transfer_destroy(struct pipe_transfer *trans)
339{
340   pipe_texture_reference(&trans->texture, NULL);
341   FREE(trans);
342}
343
344static void* r300_transfer_map(struct pipe_screen* screen,
345                              struct pipe_transfer* transfer)
346{
347    struct r300_texture* tex = (struct r300_texture*)transfer->texture;
348    char* map;
349    enum pipe_format format = tex->tex.format;
350
351    map = pipe_buffer_map(screen, tex->buffer,
352                          pipe_transfer_buffer_flags(transfer));
353
354    if (!map) {
355        return NULL;
356    }
357
358    return map + r300_transfer(transfer)->offset +
359        transfer->y / util_format_get_blockheight(format) * transfer->stride +
360        transfer->x / util_format_get_blockwidth(format) * util_format_get_blocksize(format);
361}
362
363static void r300_transfer_unmap(struct pipe_screen* screen,
364                                struct pipe_transfer* transfer)
365{
366    struct r300_texture* tex = (struct r300_texture*)transfer->texture;
367    pipe_buffer_unmap(screen, tex->buffer);
368}
369
370static void r300_destroy_screen(struct pipe_screen* pscreen)
371{
372    struct r300_screen* r300screen = r300_screen(pscreen);
373
374    FREE(r300screen->caps);
375    FREE(r300screen);
376}
377
378struct pipe_screen* r300_create_screen(struct radeon_winsys* radeon_winsys)
379{
380    struct r300_screen* r300screen = CALLOC_STRUCT(r300_screen);
381    struct r300_capabilities* caps = CALLOC_STRUCT(r300_capabilities);
382
383    if (!r300screen || !caps) {
384        FREE(r300screen);
385        FREE(caps);
386        return NULL;
387    }
388
389    caps->pci_id = radeon_winsys->pci_id;
390    caps->num_frag_pipes = radeon_winsys->gb_pipes;
391    caps->num_z_pipes = radeon_winsys->z_pipes;
392
393    r300_init_debug(r300screen);
394    r300_parse_chipset(caps);
395
396    r300screen->caps = caps;
397    r300screen->radeon_winsys = radeon_winsys;
398    r300screen->screen.winsys = (struct pipe_winsys*)radeon_winsys;
399    r300screen->screen.destroy = r300_destroy_screen;
400    r300screen->screen.get_name = r300_get_name;
401    r300screen->screen.get_vendor = r300_get_vendor;
402    r300screen->screen.get_param = r300_get_param;
403    r300screen->screen.get_paramf = r300_get_paramf;
404    r300screen->screen.is_format_supported = r300_is_format_supported;
405    r300screen->screen.context_create = r300_create_context;
406    r300screen->screen.get_tex_transfer = r300_get_tex_transfer;
407    r300screen->screen.tex_transfer_destroy = r300_tex_transfer_destroy;
408    r300screen->screen.transfer_map = r300_transfer_map;
409    r300screen->screen.transfer_unmap = r300_transfer_unmap;
410
411    r300_init_screen_texture_functions(&r300screen->screen);
412    u_simple_screen_init(&r300screen->screen);
413
414    return &r300screen->screen;
415}
416