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  */
35 static unsigned
translate_format(enum pipe_format format)36 translate_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 
63 static unsigned
translate_depth_format(enum pipe_format zformat)64 translate_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 
78 static void
update_framebuffer(struct i915_context * i915)79 update_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 
142 struct i915_tracked_state i915_hw_framebuffer = {
143    "framebuffer", update_framebuffer, I915_NEW_FRAMEBUFFER};
144 
145 static void
update_dst_buf_vars(struct i915_context * i915)146 update_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 
186 struct i915_tracked_state i915_hw_dst_buf_vars = {
187    "dst buf vars", update_dst_buf_vars, I915_NEW_FRAMEBUFFER | I915_NEW_FS};
188