r300_render.c revision 1f7f9bab8139681e1dcbc6c10fb42965059d1395 
1/*
2 * Copyright 2009 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 "draw/draw_context.h"
24#include "draw/draw_vbuf.h"
25
26#include "pipe/p_inlines.h"
27
28#include "util/u_memory.h"
29
30#include "r300_cs.h"
31#include "r300_context.h"
32#include "r300_emit.h"
33#include "r300_reg.h"
34#include "r300_render.h"
35#include "r300_state_derived.h"
36
37/* r300_render: Vertex and index buffer primitive emission. */
38#define R300_MAX_VBO_SIZE  (1024 * 1024)
39
40static uint32_t r300_translate_primitive(unsigned prim)
41{
42    switch (prim) {
43        case PIPE_PRIM_POINTS:
44            return R300_VAP_VF_CNTL__PRIM_POINTS;
45        case PIPE_PRIM_LINES:
46            return R300_VAP_VF_CNTL__PRIM_LINES;
47        case PIPE_PRIM_LINE_LOOP:
48            return R300_VAP_VF_CNTL__PRIM_LINE_LOOP;
49        case PIPE_PRIM_LINE_STRIP:
50            return R300_VAP_VF_CNTL__PRIM_LINE_STRIP;
51        case PIPE_PRIM_TRIANGLES:
52            return R300_VAP_VF_CNTL__PRIM_TRIANGLES;
53        case PIPE_PRIM_TRIANGLE_STRIP:
54            return R300_VAP_VF_CNTL__PRIM_TRIANGLE_STRIP;
55        case PIPE_PRIM_TRIANGLE_FAN:
56            return R300_VAP_VF_CNTL__PRIM_TRIANGLE_FAN;
57        case PIPE_PRIM_QUADS:
58            return R300_VAP_VF_CNTL__PRIM_QUADS;
59        case PIPE_PRIM_QUAD_STRIP:
60            return R300_VAP_VF_CNTL__PRIM_QUAD_STRIP;
61        case PIPE_PRIM_POLYGON:
62            return R300_VAP_VF_CNTL__PRIM_POLYGON;
63        default:
64            return 0;
65    }
66}
67
68/* This is the fast-path drawing & emission for HW TCL. */
69boolean r300_draw_range_elements(struct pipe_context* pipe,
70                                 struct pipe_buffer* indexBuffer,
71                                 unsigned indexSize,
72                                 unsigned minIndex,
73                                 unsigned maxIndex,
74                                 unsigned mode,
75                                 unsigned start,
76                                 unsigned count)
77{
78    struct r300_context* r300 = r300_context(pipe);
79    CS_LOCALS(r300);
80    uint32_t prim = r300_translate_primitive(mode);
81    struct pipe_vertex_buffer* aos = r300->vertex_buffers;
82    unsigned aos_count = r300->vertex_buffer_count;
83    short* indices;
84    unsigned packet_size;
85    unsigned i;
86    bool invalid = FALSE;
87
88validate:
89    for (i = 0; i < aos_count; i++) {
90        if (!r300->winsys->add_buffer(r300->winsys, aos[i].buffer,
91                    RADEON_GEM_DOMAIN_GTT, 0)) {
92            pipe->flush(pipe, 0, NULL);
93            goto validate;
94        }
95    }
96    if (!r300->winsys->validate(r300->winsys)) {
97        pipe->flush(pipe, 0, NULL);
98        if (invalid) {
99            /* Well, hell. */
100            debug_printf("r300: Stuck in validation loop, gonna quit now.");
101            exit(1);
102        }
103        invalid = TRUE;
104        goto validate;
105    }
106
107    r300_emit_dirty_state(r300);
108
109    packet_size = (aos_count >> 1) * 3 + (aos_count & 1) * 2;
110
111    BEGIN_CS(3 + packet_size + (aos_count * 2));
112    OUT_CS_PKT3(R300_PACKET3_3D_LOAD_VBPNTR, packet_size);
113    OUT_CS(aos_count);
114    for (i = 0; i < aos_count - 1; i += 2) {
115        OUT_CS(aos[i].stride |
116            (aos[i].stride << 8) |
117            (aos[i + 1].stride << 16) |
118            (aos[i + 1].stride << 24));
119        OUT_CS(aos[i].buffer_offset + start * 4 * aos[i].stride);
120        OUT_CS(aos[i + 1].buffer_offset + start * 4 * aos[i + 1].stride);
121    }
122    if (aos_count & 1) {
123        OUT_CS(aos[i].stride | (aos[i].stride << 8));
124        OUT_CS(aos[i].buffer_offset + start * 4 * aos[i].stride);
125    }
126    for (i = 0; i < aos_count; i++) {
127        OUT_CS_RELOC(aos[i].buffer, 0, RADEON_GEM_DOMAIN_GTT, 0, 0);
128    }
129    END_CS;
130
131    if (indexBuffer) {
132        indices = (short*)pipe_buffer_map(pipe->screen, indexBuffer,
133                                          PIPE_BUFFER_USAGE_CPU_READ);
134
135        /* Set the starting point. */
136        indices += start;
137
138        BEGIN_CS(2 + (count+1)/2);
139        OUT_CS_PKT3(R300_PACKET3_3D_DRAW_INDX_2, (count + 1)/2);
140        OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_INDICES | (count << 16) | prim);
141        for (i = 0; i < count - 1; i += 2) {
142            OUT_CS(indices[i + 1] << 16 | indices[i]);
143        }
144        if (count % 2) {
145            OUT_CS(indices[count - 1]);
146        }
147        END_CS;
148    } else {
149        BEGIN_CS(2);
150        OUT_CS_PKT3(R300_PACKET3_3D_DRAW_VBUF_2, 0);
151        OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_VERTEX_LIST | (count << 16) |
152               prim);
153        END_CS;
154    }
155
156    return TRUE;
157}
158
159/* Simple helpers for context setup. Should probably be moved to util. */
160boolean r300_draw_elements(struct pipe_context* pipe,
161                           struct pipe_buffer* indexBuffer,
162                           unsigned indexSize, unsigned mode,
163                           unsigned start, unsigned count)
164{
165    return pipe->draw_range_elements(pipe, indexBuffer, indexSize, 0, ~0,
166                                     mode, start, count);
167}
168
169boolean r300_draw_arrays(struct pipe_context* pipe, unsigned mode,
170                         unsigned start, unsigned count)
171{
172    return pipe->draw_elements(pipe, NULL, 0, mode, start, count);
173}
174
175/****************************************************************************
176 * The rest of this file is for SW TCL rendering only. Please be polite and *
177 * keep these functions separated so that they are easier to locate. ~C.    *
178 ***************************************************************************/
179
180/* Draw-based drawing for SW TCL chipsets. */
181boolean r300_swtcl_draw_range_elements(struct pipe_context* pipe,
182                                       struct pipe_buffer* indexBuffer,
183                                       unsigned indexSize,
184                                       unsigned minIndex,
185                                       unsigned maxIndex,
186                                       unsigned mode,
187                                       unsigned start,
188                                       unsigned count)
189{
190    struct r300_context* r300 = r300_context(pipe);
191    int i;
192
193    for (i = 0; i < r300->vertex_buffer_count; i++) {
194        void* buf = pipe_buffer_map(pipe->screen,
195                                    r300->vertex_buffers[i].buffer,
196                                    PIPE_BUFFER_USAGE_CPU_READ);
197        draw_set_mapped_vertex_buffer(r300->draw, i, buf);
198    }
199
200    if (indexBuffer) {
201        void* indices = pipe_buffer_map(pipe->screen, indexBuffer,
202                                        PIPE_BUFFER_USAGE_CPU_READ);
203        draw_set_mapped_element_buffer_range(r300->draw, indexSize,
204                                             minIndex, maxIndex, indices);
205    } else {
206        draw_set_mapped_element_buffer(r300->draw, 0, NULL);
207    }
208
209    draw_set_mapped_constant_buffer(r300->draw,
210            r300->shader_constants[PIPE_SHADER_VERTEX].constants,
211            r300->shader_constants[PIPE_SHADER_VERTEX].count *
212                (sizeof(float) * 4));
213
214    draw_arrays(r300->draw, mode, start, count);
215
216    for (i = 0; i < r300->vertex_buffer_count; i++) {
217        pipe_buffer_unmap(pipe->screen, r300->vertex_buffers[i].buffer);
218        draw_set_mapped_vertex_buffer(r300->draw, i, NULL);
219    }
220
221    if (indexBuffer) {
222        pipe_buffer_unmap(pipe->screen, indexBuffer);
223        draw_set_mapped_element_buffer_range(r300->draw, 0, start,
224                                             start + count - 1, NULL);
225    }
226
227    return TRUE;
228}
229
230/* Object for rendering using Draw. */
231struct r300_render {
232    /* Parent class */
233    struct vbuf_render base;
234
235    /* Pipe context */
236    struct r300_context* r300;
237
238    /* Vertex information */
239    size_t vertex_size;
240    unsigned prim;
241    unsigned hwprim;
242
243    /* VBO */
244    struct pipe_buffer* vbo;
245    size_t vbo_size;
246    size_t vbo_offset;
247    size_t vbo_max_used;
248    void * vbo_ptr;
249};
250
251static INLINE struct r300_render*
252r300_render(struct vbuf_render* render)
253{
254    return (struct r300_render*)render;
255}
256
257static const struct vertex_info*
258r300_render_get_vertex_info(struct vbuf_render* render)
259{
260    struct r300_render* r300render = r300_render(render);
261    struct r300_context* r300 = r300render->r300;
262
263    r300_update_derived_state(r300);
264
265    return &r300->vertex_info->vinfo;
266}
267
268static boolean r300_render_allocate_vertices(struct vbuf_render* render,
269                                                   ushort vertex_size,
270                                                   ushort count)
271{
272    struct r300_render* r300render = r300_render(render);
273    struct r300_context* r300 = r300render->r300;
274    struct pipe_screen* screen = r300->context.screen;
275    size_t size = (size_t)vertex_size * (size_t)count;
276
277    if (size + r300render->vbo_offset > r300render->vbo_size)
278    {
279        pipe_buffer_reference(&r300->vbo, NULL);
280        r300render->vbo = pipe_buffer_create(screen,
281                                             64,
282                                             PIPE_BUFFER_USAGE_VERTEX,
283                                             R300_MAX_VBO_SIZE);
284        r300render->vbo_offset = 0;
285        r300render->vbo_size = R300_MAX_VBO_SIZE;
286    }
287
288    r300render->vertex_size = vertex_size;
289    r300->vbo = r300render->vbo;
290    r300->vbo_offset = r300render->vbo_offset;
291
292    return (r300render->vbo) ? TRUE : FALSE;
293}
294
295static void* r300_render_map_vertices(struct vbuf_render* render)
296{
297    struct r300_render* r300render = r300_render(render);
298    struct pipe_screen* screen = r300render->r300->context.screen;
299
300    r300render->vbo_ptr = pipe_buffer_map(screen, r300render->vbo,
301                                          PIPE_BUFFER_USAGE_CPU_WRITE);
302
303    return (r300render->vbo_ptr + r300render->vbo_offset);
304}
305
306static void r300_render_unmap_vertices(struct vbuf_render* render,
307                                             ushort min,
308                                             ushort max)
309{
310    struct r300_render* r300render = r300_render(render);
311    struct pipe_screen* screen = r300render->r300->context.screen;
312    CS_LOCALS(r300render->r300);
313    BEGIN_CS(2);
314    OUT_CS_REG(R300_VAP_VF_MAX_VTX_INDX, max);
315    END_CS;
316
317    r300render->vbo_max_used = MAX2(r300render->vbo_max_used,
318                                    r300render->vertex_size * (max + 1));
319    pipe_buffer_unmap(screen, r300render->vbo);
320}
321
322static void r300_render_release_vertices(struct vbuf_render* render)
323{
324    struct r300_render* r300render = r300_render(render);
325
326    r300render->vbo_offset += r300render->vbo_max_used;
327    r300render->vbo_max_used = 0;
328}
329
330static boolean r300_render_set_primitive(struct vbuf_render* render,
331                                               unsigned prim)
332{
333    struct r300_render* r300render = r300_render(render);
334    r300render->prim = prim;
335
336    switch (prim) {
337        case PIPE_PRIM_POINTS:
338            r300render->hwprim = R300_VAP_VF_CNTL__PRIM_POINTS;
339            break;
340        case PIPE_PRIM_LINES:
341            r300render->hwprim = R300_VAP_VF_CNTL__PRIM_LINES;
342            break;
343        case PIPE_PRIM_LINE_LOOP:
344            r300render->hwprim = R300_VAP_VF_CNTL__PRIM_LINE_LOOP;
345            break;
346        case PIPE_PRIM_LINE_STRIP:
347            r300render->hwprim = R300_VAP_VF_CNTL__PRIM_LINE_STRIP;
348            break;
349        case PIPE_PRIM_TRIANGLES:
350            r300render->hwprim = R300_VAP_VF_CNTL__PRIM_TRIANGLES;
351            break;
352        case PIPE_PRIM_TRIANGLE_STRIP:
353            r300render->hwprim = R300_VAP_VF_CNTL__PRIM_TRIANGLE_STRIP;
354            break;
355        case PIPE_PRIM_TRIANGLE_FAN:
356            r300render->hwprim = R300_VAP_VF_CNTL__PRIM_TRIANGLE_FAN;
357            break;
358        case PIPE_PRIM_QUADS:
359            r300render->hwprim = R300_VAP_VF_CNTL__PRIM_QUADS;
360            break;
361        case PIPE_PRIM_QUAD_STRIP:
362            r300render->hwprim = R300_VAP_VF_CNTL__PRIM_QUAD_STRIP;
363            break;
364        case PIPE_PRIM_POLYGON:
365            r300render->hwprim = R300_VAP_VF_CNTL__PRIM_POLYGON;
366            break;
367        default:
368            return FALSE;
369            break;
370    }
371
372    return TRUE;
373}
374
375static void r300_prepare_render(struct r300_render* render, unsigned count)
376{
377    struct r300_context* r300 = render->r300;
378
379    r300_emit_dirty_state(r300);
380}
381
382static void r300_render_draw_arrays(struct vbuf_render* render,
383                                          unsigned start,
384                                          unsigned count)
385{
386    struct r300_render* r300render = r300_render(render);
387    struct r300_context* r300 = r300render->r300;
388
389    CS_LOCALS(r300);
390
391    r300_prepare_render(r300render, count);
392
393    DBG(r300, DBG_DRAW, "r300: Doing vbuf render, count %d\n", count);
394
395    BEGIN_CS(2);
396    OUT_CS_PKT3(R300_PACKET3_3D_DRAW_VBUF_2, 0);
397    OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_VERTEX_LIST | (count << 16) |
398           r300render->hwprim);
399    END_CS;
400}
401
402static void r300_render_draw(struct vbuf_render* render,
403                                   const ushort* indices,
404                                   uint count)
405{
406    struct r300_render* r300render = r300_render(render);
407    struct r300_context* r300 = r300render->r300;
408    int i;
409
410    CS_LOCALS(r300);
411
412    r300_prepare_render(r300render, count);
413
414    BEGIN_CS(2 + (count+1)/2);
415    OUT_CS_PKT3(R300_PACKET3_3D_DRAW_INDX_2, (count+1)/2);
416    OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_INDICES | (count << 16) |
417           r300render->hwprim);
418    for (i = 0; i < count-1; i += 2) {
419        OUT_CS(indices[i+1] << 16 | indices[i]);
420    }
421    if (count % 2) {
422        OUT_CS(indices[count-1]);
423    }
424    END_CS;
425}
426
427static void r300_render_destroy(struct vbuf_render* render)
428{
429    FREE(render);
430}
431
432static struct vbuf_render* r300_render_create(struct r300_context* r300)
433{
434    struct r300_render* r300render = CALLOC_STRUCT(r300_render);
435
436    r300render->r300 = r300;
437
438    /* XXX find real numbers plz */
439    r300render->base.max_vertex_buffer_bytes = 128 * 1024;
440    r300render->base.max_indices = 16 * 1024;
441
442    r300render->base.get_vertex_info = r300_render_get_vertex_info;
443    r300render->base.allocate_vertices = r300_render_allocate_vertices;
444    r300render->base.map_vertices = r300_render_map_vertices;
445    r300render->base.unmap_vertices = r300_render_unmap_vertices;
446    r300render->base.set_primitive = r300_render_set_primitive;
447    r300render->base.draw = r300_render_draw;
448    r300render->base.draw_arrays = r300_render_draw_arrays;
449    r300render->base.release_vertices = r300_render_release_vertices;
450    r300render->base.destroy = r300_render_destroy;
451
452    r300render->vbo = NULL;
453    r300render->vbo_size = 0;
454    r300render->vbo_offset = 0;
455
456    return &r300render->base;
457}
458
459struct draw_stage* r300_draw_stage(struct r300_context* r300)
460{
461    struct vbuf_render* render;
462    struct draw_stage* stage;
463
464    render = r300_render_create(r300);
465
466    if (!render) {
467        return NULL;
468    }
469
470    stage = draw_vbuf_stage(r300->draw, render);
471
472    if (!stage) {
473        render->destroy(render);
474        return NULL;
475    }
476
477    draw_set_render(r300->draw, render);
478
479    return stage;
480}
481