r300_render.c revision 1ef0341ea7ee08284ebafe4f347643e1190d5777 
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/* r300_render: Vertex and index buffer primitive emission. Contains both
24 * HW TCL fastpath rendering, and SW TCL Draw-assisted rendering. */
25
26#include "draw/draw_context.h"
27#include "draw/draw_vbuf.h"
28
29#include "pipe/p_inlines.h"
30
31#include "util/u_memory.h"
32#include "util/u_prim.h"
33
34#include "r300_vbo.h"
35#include "r300_cs.h"
36#include "r300_context.h"
37#include "r300_emit.h"
38#include "r300_reg.h"
39#include "r300_render.h"
40#include "r300_state_derived.h"
41
42/* r300_render: Vertex and index buffer primitive emission. */
43#define R300_MAX_VBO_SIZE  (1024 * 1024)
44
45uint32_t r300_translate_primitive(unsigned prim)
46{
47    switch (prim) {
48        case PIPE_PRIM_POINTS:
49            return R300_VAP_VF_CNTL__PRIM_POINTS;
50        case PIPE_PRIM_LINES:
51            return R300_VAP_VF_CNTL__PRIM_LINES;
52        case PIPE_PRIM_LINE_LOOP:
53            return R300_VAP_VF_CNTL__PRIM_LINE_LOOP;
54        case PIPE_PRIM_LINE_STRIP:
55            return R300_VAP_VF_CNTL__PRIM_LINE_STRIP;
56        case PIPE_PRIM_TRIANGLES:
57            return R300_VAP_VF_CNTL__PRIM_TRIANGLES;
58        case PIPE_PRIM_TRIANGLE_STRIP:
59            return R300_VAP_VF_CNTL__PRIM_TRIANGLE_STRIP;
60        case PIPE_PRIM_TRIANGLE_FAN:
61            return R300_VAP_VF_CNTL__PRIM_TRIANGLE_FAN;
62        case PIPE_PRIM_QUADS:
63            return R300_VAP_VF_CNTL__PRIM_QUADS;
64        case PIPE_PRIM_QUAD_STRIP:
65            return R300_VAP_VF_CNTL__PRIM_QUAD_STRIP;
66        case PIPE_PRIM_POLYGON:
67            return R300_VAP_VF_CNTL__PRIM_POLYGON;
68        default:
69            return 0;
70    }
71}
72
73static boolean setup_vertex_buffers(struct r300_context *r300)
74{
75    unsigned vbuf_count = r300->aos_count;
76    struct pipe_vertex_buffer *vbuf= r300->vertex_buffer;
77    struct pipe_vertex_element *velem= r300->vertex_element;
78    bool invalid = false;
79
80validate:
81    for (int i = 0; i < vbuf_count; i++) {
82        if (!r300->winsys->add_buffer(r300->winsys, vbuf[velem[i].vertex_buffer_index].buffer,
83            RADEON_GEM_DOMAIN_GTT, 0)) {
84            r300->context.flush(&r300->context, 0, NULL);
85            goto validate;
86        }
87    }
88
89    if (!r300->winsys->validate(r300->winsys)) {
90        r300->context.flush(&r300->context, 0, NULL);
91        if (invalid) {
92            /* Well, hell. */
93            debug_printf("r300: Stuck in validation loop, gonna quit now.");
94            exit(1);
95        }
96        invalid = true;
97        goto validate;
98    }
99
100    return invalid;
101}
102
103/* This is the fast-path drawing & emission for HW TCL. */
104boolean r300_draw_range_elements(struct pipe_context* pipe,
105                                 struct pipe_buffer* indexBuffer,
106                                 unsigned indexSize,
107                                 unsigned minIndex,
108                                 unsigned maxIndex,
109                                 unsigned mode,
110                                 unsigned start,
111                                 unsigned count)
112{
113    struct r300_context* r300 = r300_context(pipe);
114
115    if (!u_trim_pipe_prim(mode, &count))
116        return false;
117
118    r300_update_derived_state(r300);
119
120    setup_vertex_buffers(r300);
121
122    setup_vertex_attributes(r300);
123
124    setup_index_buffer(r300, indexBuffer, indexSize);
125
126    r300->hw_prim = r300_translate_primitive(mode);
127
128    r300_emit_dirty_state(r300);
129
130    r300_emit_aos(r300, 0);
131
132    r300_emit_draw_elements(r300, indexBuffer, indexSize, minIndex, maxIndex,
133                            start, count);
134
135    return TRUE;
136}
137
138/* Simple helpers for context setup. Should probably be moved to util. */
139boolean r300_draw_elements(struct pipe_context* pipe,
140                           struct pipe_buffer* indexBuffer,
141                           unsigned indexSize, unsigned mode,
142                           unsigned start, unsigned count)
143{
144    return pipe->draw_range_elements(pipe, indexBuffer, indexSize, 0, ~0,
145                                     mode, start, count);
146}
147
148boolean r300_draw_arrays(struct pipe_context* pipe, unsigned mode,
149                         unsigned start, unsigned count)
150{
151    struct r300_context* r300 = r300_context(pipe);
152
153    if (!u_trim_pipe_prim(mode, &count))
154        return false;
155
156    r300_update_derived_state(r300);
157
158    setup_vertex_buffers(r300);
159
160    setup_vertex_attributes(r300);
161
162    r300->hw_prim = r300_translate_primitive(mode);
163
164    r300_emit_dirty_state(r300);
165
166    r300_emit_aos(r300, start);
167
168    r300_emit_draw_arrays(r300, count);
169
170    return TRUE;
171}
172
173/****************************************************************************
174 * The rest of this file is for SW TCL rendering only. Please be polite and *
175 * keep these functions separated so that they are easier to locate. ~C.    *
176 ***************************************************************************/
177
178/* Draw-based drawing for SW TCL chipsets. */
179boolean r300_swtcl_draw_range_elements(struct pipe_context* pipe,
180                                       struct pipe_buffer* indexBuffer,
181                                       unsigned indexSize,
182                                       unsigned minIndex,
183                                       unsigned maxIndex,
184                                       unsigned mode,
185                                       unsigned start,
186                                       unsigned count)
187{
188    assert(0);
189    struct r300_context* r300 = r300_context(pipe);
190#if 0
191    int i;
192
193    if (!u_trim_pipe_prim(mode, &count)) {
194        return FALSE;
195    }
196
197    for (i = 0; i < r300->vertex_buffer_count; i++) {
198        void* buf = pipe_buffer_map(pipe->screen,
199                                    r300->vertex_buffers[i].buffer,
200                                    PIPE_BUFFER_USAGE_CPU_READ);
201        draw_set_mapped_vertex_buffer(r300->draw, i, buf);
202    }
203
204    if (indexBuffer) {
205        void* indices = pipe_buffer_map(pipe->screen, indexBuffer,
206                                        PIPE_BUFFER_USAGE_CPU_READ);
207        draw_set_mapped_element_buffer_range(r300->draw, indexSize,
208                                             minIndex, maxIndex, indices);
209    } else {
210        draw_set_mapped_element_buffer(r300->draw, 0, NULL);
211    }
212
213    draw_set_mapped_constant_buffer(r300->draw,
214            r300->shader_constants[PIPE_SHADER_VERTEX].constants,
215            r300->shader_constants[PIPE_SHADER_VERTEX].count *
216                (sizeof(float) * 4));
217
218    draw_arrays(r300->draw, mode, start, count);
219
220    for (i = 0; i < r300->vertex_buffer_count; i++) {
221        pipe_buffer_unmap(pipe->screen, r300->vertex_buffers[i].buffer);
222        draw_set_mapped_vertex_buffer(r300->draw, i, NULL);
223    }
224
225    if (indexBuffer) {
226        pipe_buffer_unmap(pipe->screen, indexBuffer);
227        draw_set_mapped_element_buffer_range(r300->draw, 0, start,
228                                             start + count - 1, NULL);
229    }
230#endif
231    return TRUE;
232}
233
234/* Object for rendering using Draw. */
235struct r300_render {
236    /* Parent class */
237    struct vbuf_render base;
238
239    /* Pipe context */
240    struct r300_context* r300;
241
242    /* Vertex information */
243    size_t vertex_size;
244    unsigned prim;
245    unsigned hwprim;
246
247    /* VBO */
248    struct pipe_buffer* vbo;
249    size_t vbo_size;
250    size_t vbo_offset;
251    size_t vbo_max_used;
252    void * vbo_ptr;
253};
254
255static INLINE struct r300_render*
256r300_render(struct vbuf_render* render)
257{
258    return (struct r300_render*)render;
259}
260
261static const struct vertex_info*
262r300_render_get_vertex_info(struct vbuf_render* render)
263{
264    struct r300_render* r300render = r300_render(render);
265    struct r300_context* r300 = r300render->r300;
266
267    r300_update_derived_state(r300);
268
269    return &r300->vertex_info->vinfo;
270}
271
272static boolean r300_render_allocate_vertices(struct vbuf_render* render,
273                                                   ushort vertex_size,
274                                                   ushort count)
275{
276    struct r300_render* r300render = r300_render(render);
277    struct r300_context* r300 = r300render->r300;
278    struct pipe_screen* screen = r300->context.screen;
279    size_t size = (size_t)vertex_size * (size_t)count;
280
281    if (size + r300render->vbo_offset > r300render->vbo_size)
282    {
283        pipe_buffer_reference(&r300->vbo, NULL);
284        r300render->vbo = pipe_buffer_create(screen,
285                                             64,
286                                             PIPE_BUFFER_USAGE_VERTEX,
287                                             R300_MAX_VBO_SIZE);
288        r300render->vbo_offset = 0;
289        r300render->vbo_size = R300_MAX_VBO_SIZE;
290    }
291
292    r300render->vertex_size = vertex_size;
293    r300->vbo = r300render->vbo;
294    r300->vbo_offset = r300render->vbo_offset;
295
296    return (r300render->vbo) ? TRUE : FALSE;
297}
298
299static void* r300_render_map_vertices(struct vbuf_render* render)
300{
301    struct r300_render* r300render = r300_render(render);
302    struct pipe_screen* screen = r300render->r300->context.screen;
303
304    r300render->vbo_ptr = pipe_buffer_map(screen, r300render->vbo,
305                                          PIPE_BUFFER_USAGE_CPU_WRITE);
306
307    return (r300render->vbo_ptr + r300render->vbo_offset);
308}
309
310static void r300_render_unmap_vertices(struct vbuf_render* render,
311                                             ushort min,
312                                             ushort max)
313{
314    struct r300_render* r300render = r300_render(render);
315    struct pipe_screen* screen = r300render->r300->context.screen;
316    CS_LOCALS(r300render->r300);
317    BEGIN_CS(2);
318    OUT_CS_REG(R300_VAP_VF_MAX_VTX_INDX, max);
319    END_CS;
320
321    r300render->vbo_max_used = MAX2(r300render->vbo_max_used,
322                                    r300render->vertex_size * (max + 1));
323    pipe_buffer_unmap(screen, r300render->vbo);
324}
325
326static void r300_render_release_vertices(struct vbuf_render* render)
327{
328    struct r300_render* r300render = r300_render(render);
329
330    r300render->vbo_offset += r300render->vbo_max_used;
331    r300render->vbo_max_used = 0;
332}
333
334static boolean r300_render_set_primitive(struct vbuf_render* render,
335                                               unsigned prim)
336{
337    struct r300_render* r300render = r300_render(render);
338
339    r300render->prim = prim;
340    r300render->hwprim = r300_translate_primitive(prim);
341
342    return TRUE;
343}
344
345static void r300_render_draw_arrays(struct vbuf_render* render,
346                                          unsigned start,
347                                          unsigned count)
348{
349    struct r300_render* r300render = r300_render(render);
350    struct r300_context* r300 = r300render->r300;
351
352    CS_LOCALS(r300);
353
354    r300_emit_dirty_state(r300);
355
356    DBG(r300, DBG_DRAW, "r300: Doing vbuf render, count %d\n", count);
357
358    BEGIN_CS(2);
359    OUT_CS_PKT3(R300_PACKET3_3D_DRAW_VBUF_2, 0);
360    OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_VERTEX_LIST | (count << 16) |
361           r300render->hwprim);
362    END_CS;
363}
364
365static void r300_render_draw(struct vbuf_render* render,
366                                   const ushort* indices,
367                                   uint count)
368{
369    struct r300_render* r300render = r300_render(render);
370    struct r300_context* r300 = r300render->r300;
371    int i;
372
373    CS_LOCALS(r300);
374
375    r300_emit_dirty_state(r300);
376
377    BEGIN_CS(2 + (count+1)/2);
378    OUT_CS_PKT3(R300_PACKET3_3D_DRAW_INDX_2, (count+1)/2);
379    OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_INDICES | (count << 16) |
380           r300render->hwprim);
381    for (i = 0; i < count-1; i += 2) {
382        OUT_CS(indices[i+1] << 16 | indices[i]);
383    }
384    if (count % 2) {
385        OUT_CS(indices[count-1]);
386    }
387    END_CS;
388}
389
390static void r300_render_destroy(struct vbuf_render* render)
391{
392    FREE(render);
393}
394
395static struct vbuf_render* r300_render_create(struct r300_context* r300)
396{
397    struct r300_render* r300render = CALLOC_STRUCT(r300_render);
398
399    r300render->r300 = r300;
400
401    /* XXX find real numbers plz */
402    r300render->base.max_vertex_buffer_bytes = 128 * 1024;
403    r300render->base.max_indices = 16 * 1024;
404
405    r300render->base.get_vertex_info = r300_render_get_vertex_info;
406    r300render->base.allocate_vertices = r300_render_allocate_vertices;
407    r300render->base.map_vertices = r300_render_map_vertices;
408    r300render->base.unmap_vertices = r300_render_unmap_vertices;
409    r300render->base.set_primitive = r300_render_set_primitive;
410    r300render->base.draw = r300_render_draw;
411    r300render->base.draw_arrays = r300_render_draw_arrays;
412    r300render->base.release_vertices = r300_render_release_vertices;
413    r300render->base.destroy = r300_render_destroy;
414
415    r300render->vbo = NULL;
416    r300render->vbo_size = 0;
417    r300render->vbo_offset = 0;
418
419    return &r300render->base;
420}
421
422struct draw_stage* r300_draw_stage(struct r300_context* r300)
423{
424    struct vbuf_render* render;
425    struct draw_stage* stage;
426
427    render = r300_render_create(r300);
428
429    if (!render) {
430        return NULL;
431    }
432
433    stage = draw_vbuf_stage(r300->draw, render);
434
435    if (!stage) {
436        render->destroy(render);
437        return NULL;
438    }
439
440    draw_set_render(r300->draw, render);
441
442    return stage;
443}
444