r300_screen.c revision 32d737397c2ac21a553a5557914fa741be89c8a9 
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            /* XXX I'm told this goes up to 16 */
87            return 8;
88        case PIPE_CAP_NPOT_TEXTURES:
89            /* XXX enable now to get GL2.1 API,
90             * figure out later how to emulate this */
91            return 1;
92        case PIPE_CAP_TWO_SIDED_STENCIL:
93            if (r300screen->caps->is_r500) {
94                return 1;
95            } else {
96                return 0;
97            }
98        case PIPE_CAP_GLSL:
99            /* I'll be frank. This is a lie.
100             *
101             * We don't truly support GLSL on any of this driver's chipsets.
102             * To be fair, no chipset supports the full GLSL specification
103             * to the best of our knowledge, but some of the less esoteric
104             * features are still missing here.
105             *
106             * Rather than cripple ourselves intentionally, I'm going to set
107             * this flag, and as Gallium's interface continues to change, I
108             * hope that this single monolithic GLSL enable can slowly get
109             * split down into many different pieces and the state tracker
110             * will handle fallbacks transparently, like it should.
111             *
112             * ~ C.
113             */
114            return 1;
115        case PIPE_CAP_ANISOTROPIC_FILTER:
116            return 1;
117        case PIPE_CAP_POINT_SPRITE:
118            return 1;
119        case PIPE_CAP_MAX_RENDER_TARGETS:
120            return 4;
121        case PIPE_CAP_OCCLUSION_QUERY:
122            return 1;
123        case PIPE_CAP_TEXTURE_SHADOW_MAP:
124            return 1;
125        case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
126        case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
127        case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
128            if (r300screen->caps->is_r500) {
129                /* 13 == 4096 */
130                return 13;
131            } else {
132                /* 12 == 2048 */
133                return 12;
134            }
135        case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
136            return 1;
137        case PIPE_CAP_TEXTURE_MIRROR_REPEAT:
138            return 1;
139        case PIPE_CAP_MAX_VERTEX_TEXTURE_UNITS:
140            return 0;
141        case PIPE_CAP_TGSI_CONT_SUPPORTED:
142            return 0;
143        case PIPE_CAP_BLEND_EQUATION_SEPARATE:
144            return 1;
145        case PIPE_CAP_SM3:
146            return 1;
147        case PIPE_CAP_MAX_COMBINED_SAMPLERS:
148            return 8;
149        default:
150            debug_printf("r300: Implementation error: Bad param %d\n",
151                param);
152            return 0;
153    }
154}
155
156static float r300_get_paramf(struct pipe_screen* pscreen, int param)
157{
158    struct r300_screen* r300screen = r300_screen(pscreen);
159
160    switch (param) {
161        case PIPE_CAP_MAX_LINE_WIDTH:
162        case PIPE_CAP_MAX_LINE_WIDTH_AA:
163        case PIPE_CAP_MAX_POINT_WIDTH:
164        case PIPE_CAP_MAX_POINT_WIDTH_AA:
165            /* The maximum dimensions of the colorbuffer are our practical
166             * rendering limits. 2048 pixels should be enough for anybody. */
167            if (r300screen->caps->is_r500) {
168                return 4096.0f;
169            } else {
170                return 2048.0f;
171            }
172        case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
173            return 16.0f;
174        case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
175            return 16.0f;
176        default:
177            debug_printf("r300: Implementation error: Bad paramf %d\n",
178                param);
179            return 0.0f;
180    }
181}
182
183static boolean check_tex_format(enum pipe_format format, uint32_t usage,
184                                boolean is_r500)
185{
186    uint32_t retval = 0;
187
188    switch (format) {
189        /* Supported formats. */
190        /* Colorbuffer */
191        case PIPE_FORMAT_A4R4G4B4_UNORM:
192        case PIPE_FORMAT_R5G6B5_UNORM:
193        case PIPE_FORMAT_A1R5G5B5_UNORM:
194            retval = usage &
195                (PIPE_TEXTURE_USAGE_RENDER_TARGET |
196                 PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
197                 PIPE_TEXTURE_USAGE_PRIMARY);
198            break;
199
200        /* Texture */
201        case PIPE_FORMAT_A8R8G8B8_SRGB:
202        case PIPE_FORMAT_R8G8B8A8_SRGB:
203        case PIPE_FORMAT_DXT1_RGB:
204        case PIPE_FORMAT_DXT1_RGBA:
205        case PIPE_FORMAT_DXT3_RGBA:
206        case PIPE_FORMAT_DXT5_RGBA:
207        case PIPE_FORMAT_YCBCR:
208        case PIPE_FORMAT_L8_UNORM:
209        case PIPE_FORMAT_A8L8_UNORM:
210            retval = usage & PIPE_TEXTURE_USAGE_SAMPLER;
211            break;
212
213        /* Colorbuffer or texture */
214        case PIPE_FORMAT_A8R8G8B8_UNORM:
215        case PIPE_FORMAT_X8R8G8B8_UNORM:
216        case PIPE_FORMAT_R8G8B8A8_UNORM:
217        case PIPE_FORMAT_R8G8B8X8_UNORM:
218        case PIPE_FORMAT_I8_UNORM:
219            retval = usage &
220                (PIPE_TEXTURE_USAGE_RENDER_TARGET |
221                 PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
222                 PIPE_TEXTURE_USAGE_PRIMARY |
223                 PIPE_TEXTURE_USAGE_SAMPLER);
224            break;
225
226        /* Z buffer or texture */
227        case PIPE_FORMAT_Z16_UNORM:
228            retval = usage &
229                (PIPE_TEXTURE_USAGE_DEPTH_STENCIL |
230                 PIPE_TEXTURE_USAGE_SAMPLER);
231            break;
232
233        /* 24bit Z buffer can only be used as a texture on R500. */
234        case PIPE_FORMAT_Z24X8_UNORM:
235        /* Z buffer with stencil or texture */
236        case PIPE_FORMAT_Z24S8_UNORM:
237            retval = usage &
238                (PIPE_TEXTURE_USAGE_DEPTH_STENCIL |
239                 (is_r500 ? PIPE_TEXTURE_USAGE_SAMPLER : 0));
240            break;
241
242        /* Definitely unsupported formats. */
243        /* Non-usable Z buffer/stencil formats. */
244        case PIPE_FORMAT_Z32_UNORM:
245        case PIPE_FORMAT_S8Z24_UNORM:
246        case PIPE_FORMAT_X8Z24_UNORM:
247            debug_printf("r300: Note: Got unsupported format: %s in %s\n",
248                pf_name(format), __FUNCTION__);
249            return FALSE;
250
251        /* XXX These don't even exist
252        case PIPE_FORMAT_A32R32G32B32:
253        case PIPE_FORMAT_A16R16G16B16: */
254        /* XXX What the deuce is UV88? (r3xx accel page 14)
255            debug_printf("r300: Warning: Got unimplemented format: %s in %s\n",
256                pf_name(format), __FUNCTION__);
257            return FALSE; */
258
259        /* XXX Supported yet unimplemented r5xx formats: */
260        /* XXX Again, what is UV1010 this time? (r5xx accel page 148) */
261        /* XXX Even more that don't exist
262        case PIPE_FORMAT_A10R10G10B10_UNORM:
263        case PIPE_FORMAT_A2R10G10B10_UNORM:
264        case PIPE_FORMAT_I10_UNORM:
265            debug_printf(
266                "r300: Warning: Got unimplemented r500 format: %s in %s\n",
267                pf_name(format), __FUNCTION__);
268            return FALSE; */
269
270        default:
271            /* Unknown format... */
272            debug_printf("r300: Warning: Got unknown format: %s in %s\n",
273                pf_name(format), __FUNCTION__);
274            break;
275    }
276
277    /* If usage was a mask that contained multiple bits, and not all of them
278     * are supported, this will catch that and return FALSE.
279     * e.g. usage = 2 | 4; retval = 4; (retval >= usage) == FALSE
280     *
281     * This also returns FALSE for any unknown formats.
282     */
283    return (retval >= usage);
284}
285
286static boolean r300_is_format_supported(struct pipe_screen* pscreen,
287                                        enum pipe_format format,
288                                        enum pipe_texture_target target,
289                                        unsigned tex_usage,
290                                        unsigned geom_flags)
291{
292    switch (target) {
293        case PIPE_TEXTURE_1D:   /* handle 1D textures as 2D ones */
294        case PIPE_TEXTURE_2D:
295        case PIPE_TEXTURE_3D:
296        case PIPE_TEXTURE_CUBE:
297            return check_tex_format(format, tex_usage,
298                r300_screen(pscreen)->caps->is_r500);
299
300        default:
301            debug_printf("r300: Fatal: This is not a format target: %d\n",
302                target);
303            assert(0);
304            break;
305    }
306
307    return FALSE;
308}
309
310static struct pipe_transfer*
311r300_get_tex_transfer(struct pipe_screen *screen,
312                      struct pipe_texture *texture,
313                      unsigned face, unsigned level, unsigned zslice,
314                      enum pipe_transfer_usage usage, unsigned x, unsigned y,
315                      unsigned w, unsigned h)
316{
317    struct r300_texture *tex = (struct r300_texture *)texture;
318    struct r300_transfer *trans;
319    unsigned offset;
320
321    offset = r300_texture_get_offset(tex, level, zslice, face);  /* in bytes */
322
323    trans = CALLOC_STRUCT(r300_transfer);
324    if (trans) {
325        pipe_texture_reference(&trans->transfer.texture, texture);
326        trans->transfer.x = x;
327        trans->transfer.y = y;
328        trans->transfer.width = w;
329        trans->transfer.height = h;
330        trans->transfer.stride = r300_texture_get_stride(tex, level);
331        trans->transfer.usage = usage;
332
333        /* XXX not sure whether it's required to set these two,
334               the driver doesn't use them */
335        trans->transfer.zslice = zslice;
336        trans->transfer.face = face;
337
338        trans->offset = offset;
339    }
340    return &trans->transfer;
341}
342
343static void
344r300_tex_transfer_destroy(struct pipe_transfer *trans)
345{
346   pipe_texture_reference(&trans->texture, NULL);
347   FREE(trans);
348}
349
350static void* r300_transfer_map(struct pipe_screen* screen,
351                              struct pipe_transfer* transfer)
352{
353    struct r300_texture* tex = (struct r300_texture*)transfer->texture;
354    char* map;
355    enum pipe_format format = tex->tex.format;
356
357    map = pipe_buffer_map(screen, tex->buffer,
358                          pipe_transfer_buffer_flags(transfer));
359
360    if (!map) {
361        return NULL;
362    }
363
364    return map + r300_transfer(transfer)->offset +
365        transfer->y / util_format_get_blockheight(format) * transfer->stride +
366        transfer->x / util_format_get_blockwidth(format) * util_format_get_blocksize(format);
367}
368
369static void r300_transfer_unmap(struct pipe_screen* screen,
370                                struct pipe_transfer* transfer)
371{
372    struct r300_texture* tex = (struct r300_texture*)transfer->texture;
373    pipe_buffer_unmap(screen, tex->buffer);
374}
375
376static void r300_destroy_screen(struct pipe_screen* pscreen)
377{
378    struct r300_screen* r300screen = r300_screen(pscreen);
379
380    FREE(r300screen->caps);
381    FREE(r300screen);
382}
383
384struct pipe_screen* r300_create_screen(struct radeon_winsys* radeon_winsys)
385{
386    struct r300_screen* r300screen = CALLOC_STRUCT(r300_screen);
387    struct r300_capabilities* caps = CALLOC_STRUCT(r300_capabilities);
388
389    if (!r300screen || !caps)
390        return NULL;
391
392    caps->pci_id = radeon_winsys->pci_id;
393    caps->num_frag_pipes = radeon_winsys->gb_pipes;
394    caps->num_z_pipes = radeon_winsys->z_pipes;
395
396    r300_parse_chipset(caps);
397
398    r300screen->caps = caps;
399    r300screen->screen.winsys = (struct pipe_winsys*)radeon_winsys;
400    r300screen->screen.destroy = r300_destroy_screen;
401    r300screen->screen.get_name = r300_get_name;
402    r300screen->screen.get_vendor = r300_get_vendor;
403    r300screen->screen.get_param = r300_get_param;
404    r300screen->screen.get_paramf = r300_get_paramf;
405    r300screen->screen.is_format_supported = r300_is_format_supported;
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