1/*
2 * Copyright (C) 2009 Maciej Cencora <m.cencora@gmail.com>
3 *
4 * All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining
7 * a 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, sublicense, 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
16 * portions of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
19 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
21 * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
22 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
23 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
24 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 *
26 */
27
28#include "radeon_common.h"
29#include "radeon_texture.h"
30
31#include "main/enums.h"
32#include "main/image.h"
33#include "main/teximage.h"
34#include "main/texstate.h"
35#include "drivers/common/meta.h"
36
37#include "radeon_mipmap_tree.h"
38
39static GLboolean
40do_copy_texsubimage(struct gl_context *ctx,
41                    struct radeon_tex_obj *tobj,
42                    radeon_texture_image *timg,
43                    GLint dstx, GLint dsty,
44                    struct radeon_renderbuffer *rrb,
45                    GLint x, GLint y,
46                    GLsizei width, GLsizei height)
47{
48    radeonContextPtr radeon = RADEON_CONTEXT(ctx);
49    const GLuint face = timg->base.Base.Face;
50    const GLuint level = timg->base.Base.Level;
51    unsigned src_bpp;
52    unsigned dst_bpp;
53    gl_format src_mesaformat;
54    gl_format dst_mesaformat;
55    unsigned flip_y;
56
57    if (!radeon->vtbl.blit) {
58        return GL_FALSE;
59    }
60
61    // This is software renderbuffer, fallback to swrast
62    if (!rrb) {
63        return GL_FALSE;
64    }
65
66    if (_mesa_get_format_bits(timg->base.Base.TexFormat, GL_DEPTH_BITS) > 0) {
67        /* copying depth values */
68        flip_y = ctx->ReadBuffer->Attachment[BUFFER_DEPTH].Type == GL_NONE;
69    } else {
70        /* copying color */
71        flip_y = ctx->ReadBuffer->Attachment[BUFFER_COLOR0].Type == GL_NONE;
72    }
73
74    if (!timg->mt) {
75        radeon_validate_texture_miptree(ctx, &tobj->base.Sampler, &tobj->base);
76    }
77
78    assert(rrb->bo);
79    assert(timg->mt);
80    assert(timg->mt->bo);
81    assert(timg->base.Base.Width >= dstx + width);
82    assert(timg->base.Base.Height >= dsty + height);
83
84    intptr_t src_offset = rrb->draw_offset;
85    intptr_t dst_offset = radeon_miptree_image_offset(timg->mt, face, level);
86
87    if (0) {
88        fprintf(stderr, "%s: copying to face %d, level %d\n",
89                __FUNCTION__, face, level);
90        fprintf(stderr, "to: x %d, y %d, offset %d\n", dstx, dsty, (uint32_t) dst_offset);
91        fprintf(stderr, "from (%dx%d) width %d, height %d, offset %d, pitch %d\n",
92                x, y, rrb->base.Base.Width, rrb->base.Base.Height, (uint32_t) src_offset, rrb->pitch/rrb->cpp);
93        fprintf(stderr, "src size %d, dst size %d\n", rrb->bo->size, timg->mt->bo->size);
94
95    }
96
97    src_mesaformat = rrb->base.Base.Format;
98    dst_mesaformat = timg->base.Base.TexFormat;
99    src_bpp = _mesa_get_format_bytes(src_mesaformat);
100    dst_bpp = _mesa_get_format_bytes(dst_mesaformat);
101    if (!radeon->vtbl.check_blit(dst_mesaformat, rrb->pitch / rrb->cpp)) {
102	    /* depth formats tend to be special */
103	    if (_mesa_get_format_bits(dst_mesaformat, GL_DEPTH_BITS) > 0)
104		    return GL_FALSE;
105
106	    if (src_bpp != dst_bpp)
107		    return GL_FALSE;
108
109	    switch (dst_bpp) {
110	    case 2:
111		    src_mesaformat = MESA_FORMAT_RGB565;
112		    dst_mesaformat = MESA_FORMAT_RGB565;
113		    break;
114	    case 4:
115		    src_mesaformat = MESA_FORMAT_ARGB8888;
116		    dst_mesaformat = MESA_FORMAT_ARGB8888;
117		    break;
118	    case 1:
119		    src_mesaformat = MESA_FORMAT_A8;
120		    dst_mesaformat = MESA_FORMAT_A8;
121		    break;
122	    default:
123		    return GL_FALSE;
124	    }
125    }
126
127    /* blit from src buffer to texture */
128    return radeon->vtbl.blit(ctx, rrb->bo, src_offset, src_mesaformat, rrb->pitch/rrb->cpp,
129                             rrb->base.Base.Width, rrb->base.Base.Height, x, y,
130                             timg->mt->bo, dst_offset, dst_mesaformat,
131                             timg->mt->levels[level].rowstride / dst_bpp,
132                             timg->base.Base.Width, timg->base.Base.Height,
133                             dstx, dsty, width, height, flip_y);
134}
135
136void
137radeonCopyTexSubImage(struct gl_context *ctx, GLuint dims,
138                      struct gl_texture_image *texImage,
139                      GLint xoffset, GLint yoffset, GLint zoffset,
140                      struct gl_renderbuffer *rb,
141                      GLint x, GLint y,
142                      GLsizei width, GLsizei height)
143{
144    radeonContextPtr radeon = RADEON_CONTEXT(ctx);
145    radeon_prepare_render(radeon);
146
147    if (dims != 2 || !do_copy_texsubimage(ctx,
148                             radeon_tex_obj(texImage->TexObject),
149                             (radeon_texture_image *)texImage,
150                             xoffset, yoffset,
151                             radeon_renderbuffer(rb),                                                        x, y, width, height)) {
152
153        radeon_print(RADEON_FALLBACKS, RADEON_NORMAL,
154                     "Falling back to sw for glCopyTexSubImage2D\n");
155
156        _mesa_meta_CopyTexSubImage(ctx, dims, texImage,
157                                   xoffset, yoffset, zoffset,
158                                     rb, x, y, width, height);
159    }
160}
161