1 /*
2 * Copyright © 2012 Intel Corporation
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
21 * IN THE SOFTWARE.
22 */
23
24 #include "main/blend.h"
25 #include "main/mtypes.h"
26 #include "main/samplerobj.h"
27 #include "main/texformat.h"
28 #include "main/teximage.h"
29 #include "program/prog_parameter.h"
30 #include "program/prog_instruction.h"
31
32 #include "intel_mipmap_tree.h"
33 #include "intel_batchbuffer.h"
34 #include "intel_tex.h"
35 #include "intel_fbo.h"
36 #include "intel_buffer_objects.h"
37 #include "intel_image.h"
38
39 #include "brw_context.h"
40 #include "brw_state.h"
41 #include "brw_defines.h"
42 #include "brw_wm.h"
43 #include "isl/isl.h"
44
45 static uint32_t *
gen8_allocate_surface_state(struct brw_context * brw,uint32_t * out_offset,int index)46 gen8_allocate_surface_state(struct brw_context *brw,
47 uint32_t *out_offset, int index)
48 {
49 uint32_t *surf = __brw_state_batch(brw, AUB_TRACE_SURFACE_STATE,
50 64, 64, index, out_offset);
51 memset(surf, 0, 64);
52 return surf;
53 }
54
55 /**
56 * Creates a null surface.
57 *
58 * This is used when the shader doesn't write to any color output. An FB
59 * write to target 0 will still be emitted, because that's how the thread is
60 * terminated (and computed depth is returned), so we need to have the
61 * hardware discard the target 0 color output..
62 */
63 static void
gen8_emit_null_surface_state(struct brw_context * brw,unsigned width,unsigned height,unsigned samples,uint32_t * out_offset)64 gen8_emit_null_surface_state(struct brw_context *brw,
65 unsigned width,
66 unsigned height,
67 unsigned samples,
68 uint32_t *out_offset)
69 {
70 uint32_t *surf = gen8_allocate_surface_state(brw, out_offset, -1);
71
72 surf[0] = BRW_SURFACE_NULL << BRW_SURFACE_TYPE_SHIFT |
73 BRW_SURFACEFORMAT_B8G8R8A8_UNORM << BRW_SURFACE_FORMAT_SHIFT |
74 GEN8_SURFACE_TILING_Y;
75 surf[2] = SET_FIELD(width - 1, GEN7_SURFACE_WIDTH) |
76 SET_FIELD(height - 1, GEN7_SURFACE_HEIGHT);
77 }
78
79 void
gen8_init_vtable_surface_functions(struct brw_context * brw)80 gen8_init_vtable_surface_functions(struct brw_context *brw)
81 {
82 brw->vtbl.update_renderbuffer_surface = brw_update_renderbuffer_surface;
83 brw->vtbl.emit_null_surface_state = gen8_emit_null_surface_state;
84 }
85