1/**************************************************************************
2 *
3 * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
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 TUNGSTEN GRAPHICS 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
42/*
43 * surface functions using the render engine
44 */
45
46static void
47i915_surface_copy_render(struct pipe_context *pipe,
48                         struct pipe_resource *dst, unsigned dst_level,
49                         unsigned dstx, unsigned dsty, unsigned dstz,
50                         struct pipe_resource *src, unsigned src_level,
51                         const struct pipe_box *src_box)
52{
53   struct i915_context *i915 = i915_context(pipe);
54
55   /* Fallback for buffers. */
56   if (dst->target == PIPE_BUFFER && src->target == PIPE_BUFFER) {
57      util_resource_copy_region(pipe, dst, dst_level, dstx, dsty, dstz,
58                                src, src_level, src_box);
59      return;
60   }
61
62   if (!util_blitter_is_copy_supported(i915->blitter, dst, src,
63                                       PIPE_MASK_RGBAZS)) {
64      util_resource_copy_region(pipe, dst, dst_level, dstx, dsty, dstz,
65                                src, src_level, src_box);
66      return;
67   }
68
69   util_blitter_save_blend(i915->blitter, (void *)i915->blend);
70   util_blitter_save_depth_stencil_alpha(i915->blitter, (void *)i915->depth_stencil);
71   util_blitter_save_stencil_ref(i915->blitter, &i915->stencil_ref);
72   util_blitter_save_rasterizer(i915->blitter, (void *)i915->rasterizer);
73   util_blitter_save_fragment_shader(i915->blitter, i915->saved_fs);
74   util_blitter_save_vertex_shader(i915->blitter, i915->saved_vs);
75   util_blitter_save_viewport(i915->blitter, &i915->viewport);
76   util_blitter_save_vertex_elements(i915->blitter, i915->saved_velems);
77   util_blitter_save_vertex_buffers(i915->blitter, i915->saved_nr_vertex_buffers,
78                                    i915->saved_vertex_buffers);
79
80   util_blitter_save_framebuffer(i915->blitter, &i915->framebuffer);
81
82   util_blitter_save_fragment_sampler_states(i915->blitter,
83                                             i915->saved_nr_samplers,
84                                             i915->saved_samplers);
85   util_blitter_save_fragment_sampler_views(i915->blitter,
86                                            i915->saved_nr_sampler_views,
87                                            i915->saved_sampler_views);
88
89   util_blitter_copy_texture(i915->blitter, dst, dst_level, ~0, dstx, dsty, dstz,
90                            src, src_level, 0, src_box);
91}
92
93static void
94i915_clear_render_target_render(struct pipe_context *pipe,
95                                struct pipe_surface *dst,
96                                const union pipe_color_union *color,
97                                unsigned dstx, unsigned dsty,
98                                unsigned width, unsigned height)
99{
100   struct i915_context *i915 = i915_context(pipe);
101   struct pipe_framebuffer_state fb_state;
102
103   util_blitter_save_framebuffer(i915->blitter, &i915->framebuffer);
104
105   fb_state.width = dst->width;
106   fb_state.height = dst->height;
107   fb_state.nr_cbufs = 1;
108   fb_state.cbufs[0] = dst;
109   fb_state.zsbuf = NULL;
110   pipe->set_framebuffer_state(pipe, &fb_state);
111
112   if (i915->dirty)
113      i915_update_derived(i915);
114
115   i915_clear_emit(pipe, PIPE_CLEAR_COLOR, color, 0.0, 0x0,
116                   dstx, dsty, width, height);
117
118   pipe->set_framebuffer_state(pipe, &i915->blitter->saved_fb_state);
119   util_unreference_framebuffer_state(&i915->blitter->saved_fb_state);
120   i915->blitter->saved_fb_state.nr_cbufs = ~0;
121}
122
123static void
124i915_clear_depth_stencil_render(struct pipe_context *pipe,
125                                struct pipe_surface *dst,
126                                unsigned clear_flags,
127                                double depth,
128                                unsigned stencil,
129                                unsigned dstx, unsigned dsty,
130                                unsigned width, unsigned height)
131{
132   struct i915_context *i915 = i915_context(pipe);
133   struct pipe_framebuffer_state fb_state;
134
135   util_blitter_save_framebuffer(i915->blitter, &i915->framebuffer);
136
137   fb_state.width = dst->width;
138   fb_state.height = dst->height;
139   fb_state.nr_cbufs = 0;
140   fb_state.zsbuf = dst;
141   pipe->set_framebuffer_state(pipe, &fb_state);
142
143   if (i915->dirty)
144      i915_update_derived(i915);
145
146   i915_clear_emit(pipe, clear_flags & PIPE_CLEAR_DEPTHSTENCIL,
147                   NULL, depth, stencil,
148                   dstx, dsty, width, height);
149
150   pipe->set_framebuffer_state(pipe, &i915->blitter->saved_fb_state);
151   util_unreference_framebuffer_state(&i915->blitter->saved_fb_state);
152   i915->blitter->saved_fb_state.nr_cbufs = ~0;
153}
154
155/*
156 * surface functions using the blitter
157 */
158
159/* Assumes all values are within bounds -- no checking at this level -
160 * do it higher up if required.
161 */
162static void
163i915_surface_copy_blitter(struct pipe_context *pipe,
164                          struct pipe_resource *dst, unsigned dst_level,
165                          unsigned dstx, unsigned dsty, unsigned dstz,
166                          struct pipe_resource *src, unsigned src_level,
167                          const struct pipe_box *src_box)
168{
169   struct i915_texture *dst_tex = i915_texture(dst);
170   struct i915_texture *src_tex = i915_texture(src);
171   struct pipe_resource *dpt = &dst_tex->b.b;
172   struct pipe_resource *spt = &src_tex->b.b;
173   unsigned dst_offset, src_offset;  /* in bytes */
174
175   /* Fallback for buffers. */
176   if (dst->target == PIPE_BUFFER && src->target == PIPE_BUFFER) {
177      util_resource_copy_region(pipe, dst, dst_level, dstx, dsty, dstz,
178                                src, src_level, src_box);
179      return;
180   }
181
182   /* XXX cannot copy 3d regions at this time */
183   assert(src_box->depth == 1);
184   if (dst->target != PIPE_TEXTURE_CUBE &&
185       dst->target != PIPE_TEXTURE_3D)
186      assert(dstz == 0);
187   dst_offset = i915_texture_offset(dst_tex, dst_level, dstz);
188
189   if (src->target != PIPE_TEXTURE_CUBE &&
190       src->target != PIPE_TEXTURE_3D)
191      assert(src_box->z == 0);
192   src_offset = i915_texture_offset(src_tex, src_level, src_box->z);
193
194   assert( util_format_get_blocksize(dpt->format) == util_format_get_blocksize(spt->format) );
195   assert( util_format_get_blockwidth(dpt->format) == util_format_get_blockwidth(spt->format) );
196   assert( util_format_get_blockheight(dpt->format) == util_format_get_blockheight(spt->format) );
197   assert( util_format_get_blockwidth(dpt->format) == 1 );
198   assert( util_format_get_blockheight(dpt->format) == 1 );
199
200   i915_copy_blit( i915_context(pipe),
201                   util_format_get_blocksize(dpt->format),
202                   (unsigned short) src_tex->stride, src_tex->buffer, src_offset,
203                   (unsigned short) dst_tex->stride, dst_tex->buffer, dst_offset,
204                   (short) src_box->x, (short) src_box->y, (short) dstx, (short) dsty,
205                   (short) src_box->width, (short) src_box->height );
206}
207
208static void
209i915_clear_render_target_blitter(struct pipe_context *pipe,
210                                 struct pipe_surface *dst,
211                                 const union pipe_color_union *color,
212                                 unsigned dstx, unsigned dsty,
213                                 unsigned width, unsigned height)
214{
215   struct i915_texture *tex = i915_texture(dst->texture);
216   struct pipe_resource *pt = &tex->b.b;
217   union util_color uc;
218   unsigned offset = i915_texture_offset(tex, dst->u.tex.level, dst->u.tex.first_layer);
219
220   assert(util_format_get_blockwidth(pt->format) == 1);
221   assert(util_format_get_blockheight(pt->format) == 1);
222
223   util_pack_color(color->f, dst->format, &uc);
224   i915_fill_blit( i915_context(pipe),
225                   util_format_get_blocksize(pt->format),
226                   XY_COLOR_BLT_WRITE_ALPHA | XY_COLOR_BLT_WRITE_RGB,
227                   (unsigned short) tex->stride,
228                   tex->buffer, offset,
229                   (short) dstx, (short) dsty,
230                   (short) width, (short) height,
231                   uc.ui );
232}
233
234static void
235i915_clear_depth_stencil_blitter(struct pipe_context *pipe,
236                                 struct pipe_surface *dst,
237                                 unsigned clear_flags,
238                                 double depth,
239                                 unsigned stencil,
240                                 unsigned dstx, unsigned dsty,
241                                 unsigned width, unsigned height)
242{
243   struct i915_texture *tex = i915_texture(dst->texture);
244   struct pipe_resource *pt = &tex->b.b;
245   unsigned packedds;
246   unsigned mask = 0;
247   unsigned offset = i915_texture_offset(tex, dst->u.tex.level, dst->u.tex.first_layer);
248
249   assert(util_format_get_blockwidth(pt->format) == 1);
250   assert(util_format_get_blockheight(pt->format) == 1);
251
252   packedds = util_pack_z_stencil(dst->format, depth, stencil);
253
254   if (clear_flags & PIPE_CLEAR_DEPTH)
255      mask |= XY_COLOR_BLT_WRITE_RGB;
256   /* XXX presumably this does read-modify-write
257      (otherwise this won't work anyway). Hence will only want to
258      do it if really have stencil and it isn't cleared */
259   if ((clear_flags & PIPE_CLEAR_STENCIL) ||
260       (dst->format != PIPE_FORMAT_Z24_UNORM_S8_UINT))
261      mask |= XY_COLOR_BLT_WRITE_ALPHA;
262
263   i915_fill_blit( i915_context(pipe),
264                   util_format_get_blocksize(pt->format),
265                   mask,
266                   (unsigned short) tex->stride,
267                   tex->buffer, offset,
268                   (short) dstx, (short) dsty,
269                   (short) width, (short) height,
270                   packedds );
271}
272
273/*
274 * Screen surface functions
275 */
276
277
278static struct pipe_surface *
279i915_create_surface(struct pipe_context *ctx,
280                    struct pipe_resource *pt,
281                    const struct pipe_surface *surf_tmpl)
282{
283   struct pipe_surface *ps;
284
285   assert(surf_tmpl->u.tex.first_layer == surf_tmpl->u.tex.last_layer);
286   if (pt->target != PIPE_TEXTURE_CUBE &&
287       pt->target != PIPE_TEXTURE_3D)
288      assert(surf_tmpl->u.tex.first_layer == 0);
289
290   ps = CALLOC_STRUCT(pipe_surface);
291   if (ps) {
292      /* could subclass pipe_surface and store offset as it used to do */
293      pipe_reference_init(&ps->reference, 1);
294      pipe_resource_reference(&ps->texture, pt);
295      ps->format = surf_tmpl->format;
296      ps->width = u_minify(pt->width0, surf_tmpl->u.tex.level);
297      ps->height = u_minify(pt->height0, surf_tmpl->u.tex.level);
298      ps->u.tex.level = surf_tmpl->u.tex.level;
299      ps->u.tex.first_layer = surf_tmpl->u.tex.first_layer;
300      ps->u.tex.last_layer = surf_tmpl->u.tex.last_layer;
301      ps->usage = surf_tmpl->usage;
302      ps->context = ctx;
303   }
304   return ps;
305}
306
307static void
308i915_surface_destroy(struct pipe_context *ctx,
309                     struct pipe_surface *surf)
310{
311   pipe_resource_reference(&surf->texture, NULL);
312   FREE(surf);
313}
314
315
316void
317i915_init_surface_functions(struct i915_context *i915)
318{
319   if (i915_screen(i915->base.screen)->debug.use_blitter) {
320      i915->base.resource_copy_region = i915_surface_copy_blitter;
321      i915->base.clear_render_target = i915_clear_render_target_blitter;
322      i915->base.clear_depth_stencil = i915_clear_depth_stencil_blitter;
323   } else {
324      i915->base.resource_copy_region = i915_surface_copy_render;
325      i915->base.clear_render_target = i915_clear_render_target_render;
326      i915->base.clear_depth_stencil = i915_clear_depth_stencil_render;
327   }
328   i915->base.create_surface = i915_create_surface;
329   i915->base.surface_destroy = i915_surface_destroy;
330}
331