1 /*
2 * Copyright 2016 The Chromium OS Authors. All rights reserved.
3 * Use of this source code is governed by a BSD-style license that can be
4 * found in the LICENSE file.
5 */
6
7 #include "drv_priv.h"
8 #include "helpers.h"
9 #include "util.h"
10
11 #define MESA_LLVMPIPE_TILE_ORDER 6
12 #define MESA_LLVMPIPE_TILE_SIZE (1 << MESA_LLVMPIPE_TILE_ORDER)
13
14 static const uint32_t render_target_formats[] = { DRM_FORMAT_ABGR8888, DRM_FORMAT_ARGB8888,
15 DRM_FORMAT_RGB565, DRM_FORMAT_XBGR8888,
16 DRM_FORMAT_XRGB8888 };
17
18 static const uint32_t texture_source_formats[] = { DRM_FORMAT_R8, DRM_FORMAT_YVU420,
19 DRM_FORMAT_YVU420_ANDROID };
20
vgem_init(struct driver * drv)21 static int vgem_init(struct driver *drv)
22 {
23 drv_add_combinations(drv, render_target_formats, ARRAY_SIZE(render_target_formats),
24 &LINEAR_METADATA, BO_USE_RENDER_MASK);
25
26 drv_add_combinations(drv, texture_source_formats, ARRAY_SIZE(texture_source_formats),
27 &LINEAR_METADATA, BO_USE_TEXTURE_MASK);
28
29 return drv_modify_linear_combinations(drv);
30 }
31
vgem_bo_create(struct bo * bo,uint32_t width,uint32_t height,uint32_t format,uint64_t flags)32 static int vgem_bo_create(struct bo *bo, uint32_t width, uint32_t height, uint32_t format,
33 uint64_t flags)
34 {
35 width = ALIGN(width, MESA_LLVMPIPE_TILE_SIZE);
36 height = ALIGN(height, MESA_LLVMPIPE_TILE_SIZE);
37
38 /* HAL_PIXEL_FORMAT_YV12 requires that the buffer's height not be aligned. */
39 if (bo->format == DRM_FORMAT_YVU420_ANDROID)
40 height = bo->height;
41
42 return drv_dumb_bo_create(bo, width, height, format, flags);
43 }
44
vgem_resolve_format(uint32_t format,uint64_t flags)45 static uint32_t vgem_resolve_format(uint32_t format, uint64_t flags)
46 {
47 switch (format) {
48 case DRM_FORMAT_FLEX_IMPLEMENTATION_DEFINED:
49 /*HACK: See b/28671744 */
50 return DRM_FORMAT_XBGR8888;
51 case DRM_FORMAT_FLEX_YCbCr_420_888:
52 return DRM_FORMAT_YVU420;
53 default:
54 return format;
55 }
56 }
57
58 const struct backend backend_vgem = {
59 .name = "vgem",
60 .init = vgem_init,
61 .bo_create = vgem_bo_create,
62 .bo_destroy = drv_dumb_bo_destroy,
63 .bo_import = drv_prime_bo_import,
64 .bo_map = drv_dumb_bo_map,
65 .bo_unmap = drv_bo_munmap,
66 .resolve_format = vgem_resolve_format,
67 };
68