r300_screen.c revision 287c94ea4987033f9c99a2f91c5750c9083504ca 
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_memory.h"
26
27#include "r300_context.h"
28#include "r300_texture.h"
29#include "r300_screen_buffer.h"
30#include "r300_winsys.h"
31
32/* Return the identifier behind whom the brave coders responsible for this
33 * amalgamation of code, sweat, and duct tape, routinely obscure their names.
34 *
35 * ...I should have just put "Corbin Simpson", but I'm not that cool.
36 *
37 * (Or egotistical. Yet.) */
38static const char* r300_get_vendor(struct pipe_screen* pscreen)
39{
40    return "X.Org R300 Project";
41}
42
43static const char* chip_families[] = {
44    "R300",
45    "R350",
46    "R360",
47    "RV350",
48    "RV370",
49    "RV380",
50    "R420",
51    "R423",
52    "R430",
53    "R480",
54    "R481",
55    "RV410",
56    "RS400",
57    "RC410",
58    "RS480",
59    "RS482",
60    "RS600",
61    "RS690",
62    "RS740",
63    "RV515",
64    "R520",
65    "RV530",
66    "R580",
67    "RV560",
68    "RV570"
69};
70
71static const char* r300_get_name(struct pipe_screen* pscreen)
72{
73    struct r300_screen* r300screen = r300_screen(pscreen);
74
75    return chip_families[r300screen->caps.family];
76}
77
78static int r300_get_param(struct pipe_screen* pscreen, int param)
79{
80    struct r300_screen* r300screen = r300_screen(pscreen);
81
82    switch (param) {
83        case PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS:
84        case PIPE_CAP_MAX_COMBINED_SAMPLERS:
85            return r300screen->caps.num_tex_units;
86        case PIPE_CAP_NPOT_TEXTURES:
87            /* XXX enable now to get GL2.1 API,
88             * figure out later how to emulate this */
89            return 1;
90        case PIPE_CAP_TWO_SIDED_STENCIL:
91            return 1;
92        case PIPE_CAP_GLSL:
93            /* I'll be frank. This is a lie.
94             *
95             * We don't truly support GLSL on any of this driver's chipsets.
96             * To be fair, no chipset supports the full GLSL specification
97             * to the best of our knowledge, but some of the less esoteric
98             * features are still missing here.
99             *
100             * Rather than cripple ourselves intentionally, I'm going to set
101             * this flag, and as Gallium's interface continues to change, I
102             * hope that this single monolithic GLSL enable can slowly get
103             * split down into many different pieces and the state tracker
104             * will handle fallbacks transparently, like it should.
105             *
106             * ~ C.
107             */
108            return 1;
109        case PIPE_CAP_DUAL_SOURCE_BLEND:
110            return 0;
111        case PIPE_CAP_ANISOTROPIC_FILTER:
112            return 1;
113        case PIPE_CAP_POINT_SPRITE:
114            return 1;
115        case PIPE_CAP_MAX_RENDER_TARGETS:
116            return 4;
117        case PIPE_CAP_OCCLUSION_QUERY:
118            return 1;
119        case PIPE_CAP_TEXTURE_SHADOW_MAP:
120            return 1;
121        case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
122        case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
123        case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
124            if (r300screen->caps.is_r500) {
125                /* 13 == 4096 */
126                return 13;
127            } else {
128                /* 12 == 2048 */
129                return 12;
130            }
131        case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
132            return 1;
133        case PIPE_CAP_TEXTURE_MIRROR_REPEAT:
134            return 1;
135        case PIPE_CAP_MAX_VERTEX_TEXTURE_UNITS:
136            return 0;
137        case PIPE_CAP_TGSI_CONT_SUPPORTED:
138            return 0;
139        case PIPE_CAP_BLEND_EQUATION_SEPARATE:
140            return 1;
141        case PIPE_CAP_SM3:
142            if (r300screen->caps.is_r500) {
143                return 1;
144            } else {
145                return 0;
146            }
147        case PIPE_CAP_MAX_CONST_BUFFERS:
148            return 1;
149        case PIPE_CAP_MAX_CONST_BUFFER_SIZE:
150            return 256;
151        case PIPE_CAP_INDEP_BLEND_ENABLE:
152            return 0;
153        case PIPE_CAP_INDEP_BLEND_FUNC:
154            return 0;
155        case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
156        case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
157	    return 1;
158        case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
159        case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
160            return 0;
161        default:
162            fprintf(stderr, "r300: Implementation error: Bad param %d\n",
163                param);
164            return 0;
165    }
166}
167
168static float r300_get_paramf(struct pipe_screen* pscreen, int param)
169{
170    struct r300_screen* r300screen = r300_screen(pscreen);
171
172    switch (param) {
173        case PIPE_CAP_MAX_LINE_WIDTH:
174        case PIPE_CAP_MAX_LINE_WIDTH_AA:
175        case PIPE_CAP_MAX_POINT_WIDTH:
176        case PIPE_CAP_MAX_POINT_WIDTH_AA:
177            /* The maximum dimensions of the colorbuffer are our practical
178             * rendering limits. 2048 pixels should be enough for anybody. */
179            if (r300screen->caps.is_r500) {
180                return 4096.0f;
181            } else if (r300screen->caps.is_r400) {
182                return 4021.0f;
183            } else {
184                return 2560.0f;
185            }
186        case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
187            return 16.0f;
188        case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
189            return 16.0f;
190        default:
191            fprintf(stderr, "r300: Implementation error: Bad paramf %d\n",
192                param);
193            return 0.0f;
194    }
195}
196
197static boolean r300_is_format_supported(struct pipe_screen* screen,
198                                        enum pipe_format format,
199                                        enum pipe_texture_target target,
200                                        unsigned usage,
201                                        unsigned geom_flags)
202{
203    uint32_t retval = 0;
204    boolean is_r500 = r300_screen(screen)->caps.is_r500;
205    boolean is_r400 = r300_screen(screen)->caps.is_r400;
206    boolean is_z24 = format == PIPE_FORMAT_X8Z24_UNORM ||
207                     format == PIPE_FORMAT_S8_USCALED_Z24_UNORM;
208    boolean is_color2101010 = format == PIPE_FORMAT_R10G10B10A2_UNORM;
209    boolean is_ati1n = format == PIPE_FORMAT_RGTC1_UNORM ||
210                       format == PIPE_FORMAT_RGTC1_SNORM;
211    boolean is_ati2n = format == PIPE_FORMAT_RGTC2_UNORM ||
212                       format == PIPE_FORMAT_RGTC2_SNORM;
213
214    if (target >= PIPE_MAX_TEXTURE_TYPES) {
215        fprintf(stderr, "r300: Implementation error: Received bogus texture "
216            "target %d in %s\n", target, __FUNCTION__);
217        return FALSE;
218    }
219
220    /* Check sampler format support. */
221    if ((usage & PIPE_BIND_SAMPLER_VIEW) &&
222        /* Z24 cannot be sampled from on non-r5xx. */
223        (is_r500 || !is_z24) &&
224        /* ATI1N is r5xx-only. */
225        (is_r500 || !is_ati1n) &&
226        /* ATI2N is supported on r4xx-r5xx. */
227        (is_r400 || is_r500 || !is_ati2n) &&
228        r300_is_sampler_format_supported(format)) {
229        retval |= PIPE_BIND_SAMPLER_VIEW;
230    }
231
232    /* Check colorbuffer format support. */
233    if ((usage & (PIPE_BIND_RENDER_TARGET |
234                  PIPE_BIND_DISPLAY_TARGET |
235                  PIPE_BIND_SCANOUT |
236                  PIPE_BIND_SHARED)) &&
237        /* 2101010 cannot be rendered to on non-r5xx. */
238        (is_r500 || !is_color2101010) &&
239        r300_is_colorbuffer_format_supported(format)) {
240        retval |= usage &
241            (PIPE_BIND_RENDER_TARGET |
242             PIPE_BIND_DISPLAY_TARGET |
243             PIPE_BIND_SCANOUT |
244             PIPE_BIND_SHARED);
245    }
246
247    /* Check depth-stencil format support. */
248    if (usage & PIPE_BIND_DEPTH_STENCIL &&
249        r300_is_zs_format_supported(format)) {
250        retval |= PIPE_BIND_DEPTH_STENCIL;
251    }
252
253    return retval == usage;
254}
255
256static void r300_destroy_screen(struct pipe_screen* pscreen)
257{
258    struct r300_screen* r300screen = r300_screen(pscreen);
259    struct r300_winsys_screen *rws = r300_winsys_screen(pscreen);
260
261    if (rws)
262      rws->destroy(rws);
263
264    FREE(r300screen);
265}
266
267static void r300_fence_reference(struct pipe_screen *screen,
268                                 struct pipe_fence_handle **ptr,
269                                 struct pipe_fence_handle *fence)
270{
271}
272
273static int r300_fence_signalled(struct pipe_screen *screen,
274                                struct pipe_fence_handle *fence,
275                                unsigned flags)
276{
277    return 0;
278}
279
280static int r300_fence_finish(struct pipe_screen *screen,
281                             struct pipe_fence_handle *fence,
282                             unsigned flags)
283{
284    return 0;
285}
286
287struct pipe_screen* r300_create_screen(struct r300_winsys_screen *rws)
288{
289    struct r300_screen *r300screen = CALLOC_STRUCT(r300_screen);
290
291    if (!r300screen) {
292        FREE(r300screen);
293        return NULL;
294    }
295
296    r300screen->caps.pci_id = rws->get_value(rws, R300_VID_PCI_ID);
297    r300screen->caps.num_frag_pipes = rws->get_value(rws, R300_VID_GB_PIPES);
298    r300screen->caps.num_z_pipes = rws->get_value(rws, R300_VID_Z_PIPES);
299
300    r300_init_debug(r300screen);
301    r300_parse_chipset(&r300screen->caps);
302
303    r300screen->rws = rws;
304    r300screen->screen.winsys = (struct pipe_winsys*)rws;
305    r300screen->screen.destroy = r300_destroy_screen;
306    r300screen->screen.get_name = r300_get_name;
307    r300screen->screen.get_vendor = r300_get_vendor;
308    r300screen->screen.get_param = r300_get_param;
309    r300screen->screen.get_paramf = r300_get_paramf;
310    r300screen->screen.is_format_supported = r300_is_format_supported;
311    r300screen->screen.context_create = r300_create_context;
312
313    r300screen->screen.fence_reference = r300_fence_reference;
314    r300screen->screen.fence_signalled = r300_fence_signalled;
315    r300screen->screen.fence_finish = r300_fence_finish;
316
317    r300_init_screen_resource_functions(r300screen);
318
319    return &r300screen->screen;
320}
321
322struct r300_winsys_screen *
323r300_winsys_screen(struct pipe_screen *screen)
324{
325    return r300_screen(screen)->rws;
326}
327