1/**************************************************************************
2 *
3 * Copyright 2003 VMware, Inc.
4 * All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
16 * of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 *
26 **************************************************************************/
27
28#include "i915_surface.h"
29#include "i915_resource.h"
30#include "i915_state.h"
31#include "i915_blit.h"
32#include "i915_reg.h"
33#include "i915_screen.h"
34#include "pipe/p_defines.h"
35#include "util/u_inlines.h"
36#include "util/u_math.h"
37#include "util/u_format.h"
38#include "util/u_memory.h"
39#include "util/u_pack_color.h"
40#include "util/u_surface.h"
41
42static struct pipe_surface *
43i915_create_surface_custom(struct pipe_context *ctx,
44                           struct pipe_resource *pt,
45                           const struct pipe_surface *surf_tmpl,
46                           unsigned width0,
47                           unsigned height0);
48/*
49 * surface functions using the render engine
50 */
51
52static void
53i915_util_blitter_save_states(struct i915_context *i915)
54{
55   util_blitter_save_blend(i915->blitter, (void *)i915->blend);
56   util_blitter_save_depth_stencil_alpha(i915->blitter, (void *)i915->depth_stencil);
57   util_blitter_save_stencil_ref(i915->blitter, &i915->stencil_ref);
58   util_blitter_save_rasterizer(i915->blitter, (void *)i915->rasterizer);
59   util_blitter_save_fragment_shader(i915->blitter, i915->fs);
60   util_blitter_save_vertex_shader(i915->blitter, i915->vs);
61   util_blitter_save_viewport(i915->blitter, &i915->viewport);
62   util_blitter_save_scissor(i915->blitter, &i915->scissor);
63   util_blitter_save_vertex_elements(i915->blitter, i915->velems);
64   util_blitter_save_vertex_buffer_slot(i915->blitter,
65                                    i915->vertex_buffers);
66
67   util_blitter_save_framebuffer(i915->blitter, &i915->framebuffer);
68
69   util_blitter_save_fragment_sampler_states(i915->blitter,
70                                             i915->num_samplers,
71                                             (void**)i915->fragment_sampler);
72   util_blitter_save_fragment_sampler_views(i915->blitter,
73                                            i915->num_fragment_sampler_views,
74                                            i915->fragment_sampler_views);
75}
76
77static void
78i915_surface_copy_render(struct pipe_context *pipe,
79                         struct pipe_resource *dst, unsigned dst_level,
80                         unsigned dstx, unsigned dsty, unsigned dstz,
81                         struct pipe_resource *src, unsigned src_level,
82                         const struct pipe_box *src_box)
83{
84   struct i915_context *i915 = i915_context(pipe);
85   unsigned src_width0 = src->width0;
86   unsigned src_height0 = src->height0;
87   unsigned dst_width0 = dst->width0;
88   unsigned dst_height0 = dst->height0;
89   struct pipe_box dstbox;
90   struct pipe_sampler_view src_templ, *src_view;
91   struct pipe_surface dst_templ, *dst_view;
92   const struct util_format_description *desc;
93
94   /* Fallback for buffers. */
95   if (dst->target == PIPE_BUFFER && src->target == PIPE_BUFFER)
96      goto fallback;
97
98   /* Fallback for depth&stencil. XXX: see if we can use a proxy format */
99   desc = util_format_description(src->format);
100   if (desc->colorspace == UTIL_FORMAT_COLORSPACE_ZS)
101      goto fallback;
102
103   desc = util_format_description(dst->format);
104   if (desc->colorspace == UTIL_FORMAT_COLORSPACE_ZS)
105      goto fallback;
106
107   util_blitter_default_dst_texture(&dst_templ, dst, dst_level, dstz);
108   util_blitter_default_src_texture(&src_templ, src, src_level);
109
110   if (!util_blitter_is_copy_supported(i915->blitter, dst, src))
111      goto fallback;
112
113   i915_util_blitter_save_states(i915);
114
115   dst_view = i915_create_surface_custom(pipe, dst, &dst_templ, dst_width0, dst_height0);
116   src_view = i915_create_sampler_view_custom(pipe, src, &src_templ, src_width0, src_height0);
117
118   u_box_3d(dstx, dsty, dstz, abs(src_box->width), abs(src_box->height),
119            abs(src_box->depth), &dstbox);
120
121   util_blitter_blit_generic(i915->blitter, dst_view, &dstbox,
122                             src_view, src_box, src_width0, src_height0,
123                             PIPE_MASK_RGBAZS, PIPE_TEX_FILTER_NEAREST, NULL,
124                             FALSE);
125   return;
126
127fallback:
128   util_resource_copy_region(pipe, dst, dst_level, dstx, dsty, dstz,
129                             src, src_level, src_box);
130}
131
132static void
133i915_clear_render_target_render(struct pipe_context *pipe,
134                                struct pipe_surface *dst,
135                                const union pipe_color_union *color,
136                                unsigned dstx, unsigned dsty,
137                                unsigned width, unsigned height,
138                                bool render_condition_enabled)
139{
140   struct i915_context *i915 = i915_context(pipe);
141   struct pipe_framebuffer_state fb_state;
142
143   util_blitter_save_framebuffer(i915->blitter, &i915->framebuffer);
144
145   fb_state.width = dst->width;
146   fb_state.height = dst->height;
147   fb_state.nr_cbufs = 1;
148   fb_state.cbufs[0] = dst;
149   fb_state.zsbuf = NULL;
150   pipe->set_framebuffer_state(pipe, &fb_state);
151
152   if (i915->dirty)
153      i915_update_derived(i915);
154
155   i915_clear_emit(pipe, PIPE_CLEAR_COLOR, color, 0.0, 0x0,
156                   dstx, dsty, width, height);
157
158   pipe->set_framebuffer_state(pipe, &i915->blitter->saved_fb_state);
159   util_unreference_framebuffer_state(&i915->blitter->saved_fb_state);
160   i915->blitter->saved_fb_state.nr_cbufs = ~0;
161}
162
163static void
164i915_clear_depth_stencil_render(struct pipe_context *pipe,
165                                struct pipe_surface *dst,
166                                unsigned clear_flags,
167                                double depth,
168                                unsigned stencil,
169                                unsigned dstx, unsigned dsty,
170                                unsigned width, unsigned height,
171                                bool render_condition_enabled)
172{
173   struct i915_context *i915 = i915_context(pipe);
174   struct pipe_framebuffer_state fb_state;
175
176   util_blitter_save_framebuffer(i915->blitter, &i915->framebuffer);
177
178   fb_state.width = dst->width;
179   fb_state.height = dst->height;
180   fb_state.nr_cbufs = 0;
181   fb_state.zsbuf = dst;
182   pipe->set_framebuffer_state(pipe, &fb_state);
183
184   if (i915->dirty)
185      i915_update_derived(i915);
186
187   i915_clear_emit(pipe, clear_flags & PIPE_CLEAR_DEPTHSTENCIL,
188                   NULL, depth, stencil,
189                   dstx, dsty, width, height);
190
191   pipe->set_framebuffer_state(pipe, &i915->blitter->saved_fb_state);
192   util_unreference_framebuffer_state(&i915->blitter->saved_fb_state);
193   i915->blitter->saved_fb_state.nr_cbufs = ~0;
194}
195
196/*
197 * surface functions using the blitter
198 */
199
200/* Assumes all values are within bounds -- no checking at this level -
201 * do it higher up if required.
202 */
203static void
204i915_surface_copy_blitter(struct pipe_context *pipe,
205                          struct pipe_resource *dst, unsigned dst_level,
206                          unsigned dstx, unsigned dsty, unsigned dstz,
207                          struct pipe_resource *src, unsigned src_level,
208                          const struct pipe_box *src_box)
209{
210   struct i915_texture *dst_tex = i915_texture(dst);
211   struct i915_texture *src_tex = i915_texture(src);
212   struct pipe_resource *dpt = &dst_tex->b.b;
213   struct pipe_resource *spt = &src_tex->b.b;
214   unsigned dst_offset, src_offset;  /* in bytes */
215
216   /* Fallback for buffers. */
217   if (dst->target == PIPE_BUFFER && src->target == PIPE_BUFFER) {
218      util_resource_copy_region(pipe, dst, dst_level, dstx, dsty, dstz,
219                                src, src_level, src_box);
220      return;
221   }
222
223   /* XXX cannot copy 3d regions at this time */
224   assert(src_box->depth == 1);
225   if (dst->target != PIPE_TEXTURE_CUBE &&
226       dst->target != PIPE_TEXTURE_3D)
227      assert(dstz == 0);
228   dst_offset = i915_texture_offset(dst_tex, dst_level, dstz);
229
230   if (src->target != PIPE_TEXTURE_CUBE &&
231       src->target != PIPE_TEXTURE_3D)
232      assert(src_box->z == 0);
233   src_offset = i915_texture_offset(src_tex, src_level, src_box->z);
234
235   assert( util_format_get_blocksize(dpt->format) == util_format_get_blocksize(spt->format) );
236   assert( util_format_get_blockwidth(dpt->format) == util_format_get_blockwidth(spt->format) );
237   assert( util_format_get_blockheight(dpt->format) == util_format_get_blockheight(spt->format) );
238   assert( util_format_get_blockwidth(dpt->format) == 1 );
239   assert( util_format_get_blockheight(dpt->format) == 1 );
240
241   i915_copy_blit( i915_context(pipe),
242                   util_format_get_blocksize(dpt->format),
243                   (unsigned short) src_tex->stride, src_tex->buffer, src_offset,
244                   (unsigned short) dst_tex->stride, dst_tex->buffer, dst_offset,
245                   (short) src_box->x, (short) src_box->y, (short) dstx, (short) dsty,
246                   (short) src_box->width, (short) src_box->height );
247}
248
249static void
250i915_blit(struct pipe_context *pipe, const struct pipe_blit_info *blit_info)
251{
252   struct i915_context *i915 = i915_context(pipe);
253   struct pipe_blit_info info = *blit_info;
254
255   if (util_try_blit_via_copy_region(pipe, &info)) {
256      return; /* done */
257   }
258
259   if (info.mask & PIPE_MASK_S) {
260      debug_printf("i915: cannot blit stencil, skipping\n");
261      info.mask &= ~PIPE_MASK_S;
262   }
263
264   if (!util_blitter_is_blit_supported(i915->blitter, &info)) {
265      debug_printf("i915: blit unsupported %s -> %s\n",
266                   util_format_short_name(info.src.resource->format),
267                   util_format_short_name(info.dst.resource->format));
268      return;
269   }
270
271   i915_util_blitter_save_states(i915);
272
273   util_blitter_blit(i915->blitter, &info);
274}
275
276static void
277i915_flush_resource(struct pipe_context *ctx, struct pipe_resource *resource)
278{
279}
280
281static void
282i915_clear_render_target_blitter(struct pipe_context *pipe,
283                                 struct pipe_surface *dst,
284                                 const union pipe_color_union *color,
285                                 unsigned dstx, unsigned dsty,
286                                 unsigned width, unsigned height,
287                                 bool render_condition_enabled)
288{
289   struct i915_texture *tex = i915_texture(dst->texture);
290   struct pipe_resource *pt = &tex->b.b;
291   union util_color uc;
292   unsigned offset = i915_texture_offset(tex, dst->u.tex.level, dst->u.tex.first_layer);
293
294   assert(util_format_get_blockwidth(pt->format) == 1);
295   assert(util_format_get_blockheight(pt->format) == 1);
296
297   util_pack_color(color->f, dst->format, &uc);
298   i915_fill_blit( i915_context(pipe),
299                   util_format_get_blocksize(pt->format),
300                   XY_COLOR_BLT_WRITE_ALPHA | XY_COLOR_BLT_WRITE_RGB,
301                   (unsigned short) tex->stride,
302                   tex->buffer, offset,
303                   (short) dstx, (short) dsty,
304                   (short) width, (short) height,
305                   uc.ui[0] );
306}
307
308static void
309i915_clear_depth_stencil_blitter(struct pipe_context *pipe,
310                                 struct pipe_surface *dst,
311                                 unsigned clear_flags,
312                                 double depth,
313                                 unsigned stencil,
314                                 unsigned dstx, unsigned dsty,
315                                 unsigned width, unsigned height,
316                                 bool render_condition_enabled)
317{
318   struct i915_texture *tex = i915_texture(dst->texture);
319   struct pipe_resource *pt = &tex->b.b;
320   unsigned packedds;
321   unsigned mask = 0;
322   unsigned offset = i915_texture_offset(tex, dst->u.tex.level, dst->u.tex.first_layer);
323
324   assert(util_format_get_blockwidth(pt->format) == 1);
325   assert(util_format_get_blockheight(pt->format) == 1);
326
327   packedds = util_pack_z_stencil(dst->format, depth, stencil);
328
329   if (clear_flags & PIPE_CLEAR_DEPTH)
330      mask |= XY_COLOR_BLT_WRITE_RGB;
331   /* XXX presumably this does read-modify-write
332      (otherwise this won't work anyway). Hence will only want to
333      do it if really have stencil and it isn't cleared */
334   if ((clear_flags & PIPE_CLEAR_STENCIL) ||
335       (dst->format != PIPE_FORMAT_Z24_UNORM_S8_UINT))
336      mask |= XY_COLOR_BLT_WRITE_ALPHA;
337
338   i915_fill_blit( i915_context(pipe),
339                   util_format_get_blocksize(pt->format),
340                   mask,
341                   (unsigned short) tex->stride,
342                   tex->buffer, offset,
343                   (short) dstx, (short) dsty,
344                   (short) width, (short) height,
345                   packedds );
346}
347
348/*
349 * Screen surface functions
350 */
351
352
353static struct pipe_surface *
354i915_create_surface_custom(struct pipe_context *ctx,
355                           struct pipe_resource *pt,
356                           const struct pipe_surface *surf_tmpl,
357                           unsigned width0,
358                           unsigned height0)
359{
360   struct pipe_surface *ps;
361
362   assert(surf_tmpl->u.tex.first_layer == surf_tmpl->u.tex.last_layer);
363   if (pt->target != PIPE_TEXTURE_CUBE &&
364       pt->target != PIPE_TEXTURE_3D)
365      assert(surf_tmpl->u.tex.first_layer == 0);
366
367   ps = CALLOC_STRUCT(pipe_surface);
368   if (ps) {
369      /* could subclass pipe_surface and store offset as it used to do */
370      pipe_reference_init(&ps->reference, 1);
371      pipe_resource_reference(&ps->texture, pt);
372      ps->format = surf_tmpl->format;
373      ps->width = u_minify(width0, surf_tmpl->u.tex.level);
374      ps->height = u_minify(height0, surf_tmpl->u.tex.level);
375      ps->u.tex.level = surf_tmpl->u.tex.level;
376      ps->u.tex.first_layer = surf_tmpl->u.tex.first_layer;
377      ps->u.tex.last_layer = surf_tmpl->u.tex.last_layer;
378      ps->context = ctx;
379   }
380   return ps;
381}
382
383static struct pipe_surface *
384i915_create_surface(struct pipe_context *ctx,
385                    struct pipe_resource *pt,
386                    const struct pipe_surface *surf_tmpl)
387{
388   return i915_create_surface_custom(ctx, pt, surf_tmpl,
389                                     pt->width0, pt->height0);
390}
391
392static void
393i915_surface_destroy(struct pipe_context *ctx,
394                     struct pipe_surface *surf)
395{
396   pipe_resource_reference(&surf->texture, NULL);
397   FREE(surf);
398}
399
400
401void
402i915_init_surface_functions(struct i915_context *i915)
403{
404   if (i915_screen(i915->base.screen)->debug.use_blitter) {
405      i915->base.resource_copy_region = i915_surface_copy_blitter;
406      i915->base.clear_render_target = i915_clear_render_target_blitter;
407      i915->base.clear_depth_stencil = i915_clear_depth_stencil_blitter;
408   } else {
409      i915->base.resource_copy_region = i915_surface_copy_render;
410      i915->base.clear_render_target = i915_clear_render_target_render;
411      i915->base.clear_depth_stencil = i915_clear_depth_stencil_render;
412   }
413   i915->base.blit = i915_blit;
414   i915->base.flush_resource = i915_flush_resource;
415   i915->base.create_surface = i915_create_surface;
416   i915->base.surface_destroy = i915_surface_destroy;
417}
418