1/**************************************************************************
2 *
3 * Copyright © 2010 Jakob Bornecrantz
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice (including the next
13 * paragraph) shall be included in all copies or substantial portions of the
14 * Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
21 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22 * DEALINGS IN THE SOFTWARE.
23 *
24 **************************************************************************/
25
26#include "i915_context.h"
27#include "i915_reg.h"
28#include "i915_resource.h"
29#include "i915_screen.h"
30#include "i915_state.h"
31
32/***********************************************************************
33 * Update framebuffer state
34 */
35static unsigned
36translate_format(enum pipe_format format)
37{
38   switch (format) {
39   case PIPE_FORMAT_B8G8R8A8_UNORM:
40   case PIPE_FORMAT_B8G8R8A8_SRGB:
41   case PIPE_FORMAT_B8G8R8X8_UNORM:
42   case PIPE_FORMAT_R8G8B8A8_UNORM:
43   case PIPE_FORMAT_R8G8B8X8_UNORM:
44      return COLOR_BUF_ARGB8888;
45   case PIPE_FORMAT_B5G6R5_UNORM:
46      return COLOR_BUF_RGB565;
47   case PIPE_FORMAT_B5G5R5A1_UNORM:
48      return COLOR_BUF_ARGB1555;
49   case PIPE_FORMAT_B4G4R4A4_UNORM:
50      return COLOR_BUF_ARGB4444;
51   case PIPE_FORMAT_B10G10R10A2_UNORM:
52      return COLOR_BUF_ARGB2101010;
53   case PIPE_FORMAT_L8_UNORM:
54   case PIPE_FORMAT_A8_UNORM:
55   case PIPE_FORMAT_I8_UNORM:
56      return COLOR_BUF_8BIT;
57   default:
58      assert(0);
59      return 0;
60   }
61}
62
63static unsigned
64translate_depth_format(enum pipe_format zformat)
65{
66   switch (zformat) {
67   case PIPE_FORMAT_Z24X8_UNORM:
68   case PIPE_FORMAT_Z24_UNORM_S8_UINT:
69      return DEPTH_FRMT_24_FIXED_8_OTHER;
70   case PIPE_FORMAT_Z16_UNORM:
71      return DEPTH_FRMT_16_FIXED;
72   default:
73      assert(0);
74      return 0;
75   }
76}
77
78static void
79update_framebuffer(struct i915_context *i915)
80{
81   struct pipe_surface *cbuf_surface = i915->framebuffer.cbufs[0];
82   struct pipe_surface *depth_surface = i915->framebuffer.zsbuf;
83   unsigned x, y;
84   int layer;
85   uint32_t draw_offset, draw_size;
86
87   if (cbuf_surface) {
88      struct i915_surface *surf = i915_surface(cbuf_surface);
89      struct i915_texture *tex = i915_texture(cbuf_surface->texture);
90      assert(tex);
91
92      i915->current.cbuf_bo = tex->buffer;
93      i915->current.cbuf_flags = surf->buf_info;
94
95      layer = cbuf_surface->u.tex.first_layer;
96
97      x = tex->image_offset[cbuf_surface->u.tex.level][layer].nblocksx;
98      y = tex->image_offset[cbuf_surface->u.tex.level][layer].nblocksy;
99   } else {
100      i915->current.cbuf_bo = NULL;
101      x = y = 0;
102   }
103   i915->static_dirty |= I915_DST_BUF_COLOR;
104
105   /* What happens if no zbuf??
106    */
107   if (depth_surface) {
108      struct i915_surface *surf = i915_surface(depth_surface);
109      struct i915_texture *tex = i915_texture(depth_surface->texture);
110      unsigned offset = i915_texture_offset(tex, depth_surface->u.tex.level,
111                                            depth_surface->u.tex.first_layer);
112      assert(tex);
113      if (offset != 0)
114         debug_printf("Depth offset is %d\n", offset);
115
116      i915->current.depth_bo = tex->buffer;
117      i915->current.depth_flags = surf->buf_info;
118   } else
119      i915->current.depth_bo = NULL;
120   i915->static_dirty |= I915_DST_BUF_DEPTH;
121
122   /* drawing rect calculations */
123   draw_offset = x | (y << 16);
124   draw_size = (i915->framebuffer.width - 1 + x) |
125               ((i915->framebuffer.height - 1 + y) << 16);
126   if (i915->current.draw_offset != draw_offset) {
127      i915->current.draw_offset = draw_offset;
128      i915_set_flush_dirty(i915, I915_PIPELINE_FLUSH);
129      i915->static_dirty |= I915_DST_RECT;
130   }
131   if (i915->current.draw_size != draw_size) {
132      i915->current.draw_size = draw_size;
133      i915->static_dirty |= I915_DST_RECT;
134   }
135
136   i915->hardware_dirty |= I915_HW_STATIC;
137
138   /* flush the cache in case we sample from the old renderbuffers */
139   i915_set_flush_dirty(i915, I915_FLUSH_CACHE);
140}
141
142struct i915_tracked_state i915_hw_framebuffer = {
143   "framebuffer", update_framebuffer, I915_NEW_FRAMEBUFFER};
144
145static void
146update_dst_buf_vars(struct i915_context *i915)
147{
148   struct pipe_surface *cbuf_surface = i915->framebuffer.cbufs[0];
149   struct pipe_surface *depth_surface = i915->framebuffer.zsbuf;
150   uint32_t dst_buf_vars, cformat, zformat;
151   uint32_t early_z = 0;
152
153   if (cbuf_surface)
154      cformat = cbuf_surface->format;
155   else
156      cformat = PIPE_FORMAT_B8G8R8A8_UNORM; /* arbitrary */
157   cformat = translate_format(cformat);
158
159   if (depth_surface) {
160      struct i915_texture *tex = i915_texture(depth_surface->texture);
161      struct i915_screen *is = i915_screen(i915->base.screen);
162
163      zformat = translate_depth_format(depth_surface->format);
164
165      if (is->is_i945 && tex->tiling != I915_TILE_NONE &&
166          (i915->fs && !i915->fs->info.writes_z))
167         early_z = CLASSIC_EARLY_DEPTH;
168   } else
169      zformat = 0;
170
171   dst_buf_vars = DSTORG_HORT_BIAS(0x8) | /* .5 */
172                  DSTORG_VERT_BIAS(0x8) | /* .5 */
173                  LOD_PRECLAMP_OGL | TEX_DEFAULT_COLOR_OGL | cformat | zformat |
174                  early_z;
175
176   if (i915->current.dst_buf_vars != dst_buf_vars) {
177      if (early_z != (i915->current.dst_buf_vars & CLASSIC_EARLY_DEPTH))
178         i915_set_flush_dirty(i915, I915_PIPELINE_FLUSH);
179
180      i915->current.dst_buf_vars = dst_buf_vars;
181      i915->static_dirty |= I915_DST_VARS;
182      i915->hardware_dirty |= I915_HW_STATIC;
183   }
184}
185
186struct i915_tracked_state i915_hw_dst_buf_vars = {
187   "dst buf vars", update_dst_buf_vars, I915_NEW_FRAMEBUFFER | I915_NEW_FS};
188