summaryrefslogtreecommitdiffstats
path: root/src/gallium/drivers/i915/i915_surface.c
blob: c51689dcb4c993d32b1c9cc9609d1fbc4f2d8072 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
/**************************************************************************
 * 
 * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
 * All Rights Reserved.
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sub license, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 * 
 * The above copyright notice and this permission notice (including the
 * next paragraph) shall be included in all copies or substantial portions
 * of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 * 
 **************************************************************************/

#include "i915_surface.h"
#include "i915_resource.h"
#include "i915_state.h"
#include "i915_blit.h"
#include "i915_reg.h"
#include "i915_screen.h"
#include "pipe/p_defines.h"
#include "util/u_inlines.h"
#include "util/u_math.h"
#include "util/u_format.h"
#include "util/u_memory.h"
#include "util/u_pack_color.h"
#include "util/u_surface.h"

/*
 * surface functions using the render engine
 */

static void
i915_surface_copy_render(struct pipe_context *pipe,
                         struct pipe_resource *dst, unsigned dst_level,
                         unsigned dstx, unsigned dsty, unsigned dstz,
                         struct pipe_resource *src, unsigned src_level,
                         const struct pipe_box *src_box)
{
   struct i915_context *i915 = i915_context(pipe);

   /* Fallback for buffers. */
   if (dst->target == PIPE_BUFFER && src->target == PIPE_BUFFER) {
      util_resource_copy_region(pipe, dst, dst_level, dstx, dsty, dstz,
                                src, src_level, src_box);
      return;
   }

   util_blitter_save_blend(i915->blitter, (void *)i915->blend);
   util_blitter_save_depth_stencil_alpha(i915->blitter, (void *)i915->depth_stencil);
   util_blitter_save_stencil_ref(i915->blitter, &i915->stencil_ref);
   util_blitter_save_rasterizer(i915->blitter, (void *)i915->rasterizer);
   util_blitter_save_fragment_shader(i915->blitter, i915->saved_fs);
   util_blitter_save_vertex_shader(i915->blitter, i915->saved_vs);
   util_blitter_save_viewport(i915->blitter, &i915->viewport);
   util_blitter_save_vertex_elements(i915->blitter, i915->saved_velems);
   util_blitter_save_vertex_buffers(i915->blitter, i915->saved_nr_vertex_buffers,
                                    i915->saved_vertex_buffers);

   util_blitter_save_framebuffer(i915->blitter, &i915->framebuffer);

   util_blitter_save_fragment_sampler_states(i915->blitter,
                                             i915->saved_nr_samplers,
                                             i915->saved_samplers);
   util_blitter_save_fragment_sampler_views(i915->blitter,
                                            i915->saved_nr_sampler_views,
                                            i915->saved_sampler_views);

   util_blitter_copy_texture(i915->blitter, dst, dst_level, dstx, dsty, dstz,
                            src, src_level, src_box);
}

static void
i915_clear_render_target_render(struct pipe_context *pipe,
                                struct pipe_surface *dst,
                                const union pipe_color_union *color,
                                unsigned dstx, unsigned dsty,
                                unsigned width, unsigned height)
{
   struct i915_context *i915 = i915_context(pipe);
   struct pipe_framebuffer_state fb_state;

   util_blitter_save_framebuffer(i915->blitter, &i915->framebuffer);

   fb_state.width = dst->width;
   fb_state.height = dst->height;
   fb_state.nr_cbufs = 1;
   fb_state.cbufs[0] = dst;
   fb_state.zsbuf = NULL;
   pipe->set_framebuffer_state(pipe, &fb_state);

   if (i915->dirty)
      i915_update_derived(i915);

   i915_clear_emit(pipe, PIPE_CLEAR_COLOR, color, 0.0, 0x0,
                   dstx, dsty, width, height);

   pipe->set_framebuffer_state(pipe, &i915->blitter->saved_fb_state);
   util_unreference_framebuffer_state(&i915->blitter->saved_fb_state);
   i915->blitter->saved_fb_state.nr_cbufs = ~0;
}

static void
i915_clear_depth_stencil_render(struct pipe_context *pipe,
                                struct pipe_surface *dst,
                                unsigned clear_flags,
                                double depth,
                                unsigned stencil,
                                unsigned dstx, unsigned dsty,
                                unsigned width, unsigned height)
{
   struct i915_context *i915 = i915_context(pipe);
   struct pipe_framebuffer_state fb_state;

   util_blitter_save_framebuffer(i915->blitter, &i915->framebuffer);

   fb_state.width = dst->width;
   fb_state.height = dst->height;
   fb_state.nr_cbufs = 0;
   fb_state.zsbuf = dst;
   pipe->set_framebuffer_state(pipe, &fb_state);

   if (i915->dirty)
      i915_update_derived(i915);

   i915_clear_emit(pipe, clear_flags & PIPE_CLEAR_DEPTHSTENCIL,
                   NULL, depth, stencil,
                   dstx, dsty, width, height);

   pipe->set_framebuffer_state(pipe, &i915->blitter->saved_fb_state);
   util_unreference_framebuffer_state(&i915->blitter->saved_fb_state);
   i915->blitter->saved_fb_state.nr_cbufs = ~0;
}

/*
 * surface functions using the blitter
 */

/* Assumes all values are within bounds -- no checking at this level -
 * do it higher up if required.
 */
static void
i915_surface_copy_blitter(struct pipe_context *pipe,
                          struct pipe_resource *dst, unsigned dst_level,
                          unsigned dstx, unsigned dsty, unsigned dstz,
                          struct pipe_resource *src, unsigned src_level,
                          const struct pipe_box *src_box)
{
   struct i915_texture *dst_tex = i915_texture(dst);
   struct i915_texture *src_tex = i915_texture(src);
   struct pipe_resource *dpt = &dst_tex->b.b;
   struct pipe_resource *spt = &src_tex->b.b;
   unsigned dst_offset, src_offset;  /* in bytes */

   /* Fallback for buffers. */
   if (dst->target == PIPE_BUFFER && src->target == PIPE_BUFFER) {
      util_resource_copy_region(pipe, dst, dst_level, dstx, dsty, dstz,
                                src, src_level, src_box);
      return;
   }

   /* XXX cannot copy 3d regions at this time */
   assert(src_box->depth == 1);
   if (dst->target != PIPE_TEXTURE_CUBE &&
       dst->target != PIPE_TEXTURE_3D)
      assert(dstz == 0);
   dst_offset = i915_texture_offset(dst_tex, dst_level, dstz);

   if (src->target != PIPE_TEXTURE_CUBE &&
       src->target != PIPE_TEXTURE_3D)
      assert(src_box->z == 0);
   src_offset = i915_texture_offset(src_tex, src_level, src_box->z);

   assert( util_format_get_blocksize(dpt->format) == util_format_get_blocksize(spt->format) );
   assert( util_format_get_blockwidth(dpt->format) == util_format_get_blockwidth(spt->format) );
   assert( util_format_get_blockheight(dpt->format) == util_format_get_blockheight(spt->format) );
   assert( util_format_get_blockwidth(dpt->format) == 1 );
   assert( util_format_get_blockheight(dpt->format) == 1 );

   i915_copy_blit( i915_context(pipe),
                   util_format_get_blocksize(dpt->format),
                   (unsigned short) src_tex->stride, src_tex->buffer, src_offset,
                   (unsigned short) dst_tex->stride, dst_tex->buffer, dst_offset,
                   (short) src_box->x, (short) src_box->y, (short) dstx, (short) dsty,
                   (short) src_box->width, (short) src_box->height );
}

static void
i915_clear_render_target_blitter(struct pipe_context *pipe,
                                 struct pipe_surface *dst,
                                 const union pipe_color_union *color,
                                 unsigned dstx, unsigned dsty,
                                 unsigned width, unsigned height)
{
   struct i915_texture *tex = i915_texture(dst->texture);
   struct pipe_resource *pt = &tex->b.b;
   union util_color uc;
   unsigned offset = i915_texture_offset(tex, dst->u.tex.level, dst->u.tex.first_layer);

   assert(util_format_get_blockwidth(pt->format) == 1);
   assert(util_format_get_blockheight(pt->format) == 1);

   util_pack_color(color->f, dst->format, &uc);
   i915_fill_blit( i915_context(pipe),
                   util_format_get_blocksize(pt->format),
                   XY_COLOR_BLT_WRITE_ALPHA | XY_COLOR_BLT_WRITE_RGB,
                   (unsigned short) tex->stride,
                   tex->buffer, offset,
                   (short) dstx, (short) dsty,
                   (short) width, (short) height,
                   uc.ui );
}

static void
i915_clear_depth_stencil_blitter(struct pipe_context *pipe,
                                 struct pipe_surface *dst,
                                 unsigned clear_flags,
                                 double depth,
                                 unsigned stencil,
                                 unsigned dstx, unsigned dsty,
                                 unsigned width, unsigned height)
{
   struct i915_texture *tex = i915_texture(dst->texture);
   struct pipe_resource *pt = &tex->b.b;
   unsigned packedds;
   unsigned mask = 0;
   unsigned offset = i915_texture_offset(tex, dst->u.tex.level, dst->u.tex.first_layer);

   assert(util_format_get_blockwidth(pt->format) == 1);
   assert(util_format_get_blockheight(pt->format) == 1);

   packedds = util_pack_z_stencil(dst->format, depth, stencil);

   if (clear_flags & PIPE_CLEAR_DEPTH)
      mask |= XY_COLOR_BLT_WRITE_RGB;
   /* XXX presumably this does read-modify-write
      (otherwise this won't work anyway). Hence will only want to
      do it if really have stencil and it isn't cleared */
   if ((clear_flags & PIPE_CLEAR_STENCIL) ||
       (dst->format != PIPE_FORMAT_Z24_UNORM_S8_UINT))
      mask |= XY_COLOR_BLT_WRITE_ALPHA;

   i915_fill_blit( i915_context(pipe),
                   util_format_get_blocksize(pt->format),
                   mask,
                   (unsigned short) tex->stride,
                   tex->buffer, offset,
                   (short) dstx, (short) dsty,
                   (short) width, (short) height,
                   packedds );
}

/*
 * Screen surface functions
 */


static struct pipe_surface *
i915_create_surface(struct pipe_context *ctx,
                    struct pipe_resource *pt,
                    const struct pipe_surface *surf_tmpl)
{
   struct pipe_surface *ps;

   assert(surf_tmpl->u.tex.first_layer == surf_tmpl->u.tex.last_layer);
   if (pt->target != PIPE_TEXTURE_CUBE &&
       pt->target != PIPE_TEXTURE_3D)
      assert(surf_tmpl->u.tex.first_layer == 0);

   ps = CALLOC_STRUCT(pipe_surface);
   if (ps) {
      /* could subclass pipe_surface and store offset as it used to do */
      pipe_reference_init(&ps->reference, 1);
      pipe_resource_reference(&ps->texture, pt);
      ps->format = surf_tmpl->format;
      ps->width = u_minify(pt->width0, surf_tmpl->u.tex.level);
      ps->height = u_minify(pt->height0, surf_tmpl->u.tex.level);
      ps->u.tex.level = surf_tmpl->u.tex.level;
      ps->u.tex.first_layer = surf_tmpl->u.tex.first_layer;
      ps->u.tex.last_layer = surf_tmpl->u.tex.last_layer;
      ps->usage = surf_tmpl->usage;
      ps->context = ctx;
   }
   return ps;
}

static void
i915_surface_destroy(struct pipe_context *ctx,
                     struct pipe_surface *surf)
{
   pipe_resource_reference(&surf->texture, NULL);
   FREE(surf);
}


void
i915_init_surface_functions(struct i915_context *i915)
{
   if (i915_screen(i915->base.screen)->debug.use_blitter) {
      i915->base.resource_copy_region = i915_surface_copy_blitter;
      i915->base.clear_render_target = i915_clear_render_target_blitter;
      i915->base.clear_depth_stencil = i915_clear_depth_stencil_blitter;
   } else {
      i915->base.resource_copy_region = i915_surface_copy_render;
      i915->base.clear_render_target = i915_clear_render_target_render;
      i915->base.clear_depth_stencil = i915_clear_depth_stencil_render;
   }
   i915->base.create_surface = i915_create_surface;
   i915->base.surface_destroy = i915_surface_destroy;
}