1 /*
2 * Copyright 2003 VMware, Inc.
3 * All Rights Reserved.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the
7 * "Software"), to deal in the Software without restriction, including
8 * without limitation the rights to use, copy, modify, merge, publish,
9 * distribute, sublicense, and/or sell copies of the Software, and to
10 * permit persons to whom the Software is furnished to do so, subject to
11 * the following conditions:
12 *
13 * The above copyright notice and this permission notice (including the
14 * next paragraph) shall be included in all copies or substantial portions
15 * of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
20 * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
21 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
22 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
23 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
24 */
25
26 #include "main/mtypes.h"
27 #include "main/enums.h"
28 #include "main/image.h"
29 #include "main/teximage.h"
30 #include "main/texobj.h"
31 #include "main/texstate.h"
32 #include "main/fbobject.h"
33
34 #include "drivers/common/meta.h"
35
36 #include "intel_screen.h"
37 #include "intel_mipmap_tree.h"
38 #include "intel_fbo.h"
39 #include "intel_tex.h"
40 #include "intel_blit.h"
41 #include "brw_context.h"
42
43 #define FILE_DEBUG_FLAG DEBUG_TEXTURE
44
45
46 static bool
intel_copy_texsubimage(struct brw_context * brw,struct intel_texture_image * intelImage,GLint dstx,GLint dsty,GLint slice,struct intel_renderbuffer * irb,GLint x,GLint y,GLsizei width,GLsizei height)47 intel_copy_texsubimage(struct brw_context *brw,
48 struct intel_texture_image *intelImage,
49 GLint dstx, GLint dsty, GLint slice,
50 struct intel_renderbuffer *irb,
51 GLint x, GLint y, GLsizei width, GLsizei height)
52 {
53 const GLenum internalFormat = intelImage->base.Base.InternalFormat;
54
55 if (!intelImage->mt || !irb || !irb->mt) {
56 if (unlikely(INTEL_DEBUG & DEBUG_PERF))
57 fprintf(stderr, "%s fail %p %p (0x%08x)\n",
58 __func__, intelImage->mt, irb, internalFormat);
59 return false;
60 }
61
62 /* No pixel transfer operations (zoom, bias, mapping), just a blit */
63 if (brw->ctx._ImageTransferState)
64 return false;
65
66 intel_prepare_render(brw);
67
68 /* glCopyTexSubImage() can be called on a multisampled renderbuffer (if
69 * that renderbuffer is associated with the window system framebuffer),
70 * however the hardware blitter can't handle this case, so fall back to
71 * meta (which can, since it uses ReadPixels).
72 */
73 if (irb->Base.Base.NumSamples != 0)
74 return false;
75
76 /* glCopyTexSubImage() can't be called on a multisampled texture. */
77 assert(intelImage->base.Base.NumSamples == 0);
78
79 /* account for view parameters and face index */
80 int dst_level = intelImage->base.Base.Level +
81 intelImage->base.Base.TexObject->MinLevel;
82 int dst_slice = slice + intelImage->base.Base.Face +
83 intelImage->base.Base.TexObject->MinLayer;
84
85 /* blit from src buffer to texture */
86 return intel_miptree_blit(brw,
87 irb->mt, irb->mt_level, irb->mt_layer,
88 x, y, irb->Base.Base.Name == 0,
89 intelImage->mt, dst_level, dst_slice,
90 dstx, dsty, false,
91 width, height, GL_COPY);
92 }
93
94
95 static void
intelCopyTexSubImage(struct gl_context * ctx,GLuint dims,struct gl_texture_image * texImage,GLint xoffset,GLint yoffset,GLint slice,struct gl_renderbuffer * rb,GLint x,GLint y,GLsizei width,GLsizei height)96 intelCopyTexSubImage(struct gl_context *ctx, GLuint dims,
97 struct gl_texture_image *texImage,
98 GLint xoffset, GLint yoffset, GLint slice,
99 struct gl_renderbuffer *rb,
100 GLint x, GLint y,
101 GLsizei width, GLsizei height)
102 {
103 struct brw_context *brw = brw_context(ctx);
104
105 /* Try BLORP first. It can handle almost everything. */
106 if (brw_blorp_copytexsubimage(brw, rb, texImage, slice, x, y,
107 xoffset, yoffset, width, height))
108 return;
109
110 /* Next, try the BLT engine. */
111 if (intel_copy_texsubimage(brw,
112 intel_texture_image(texImage),
113 xoffset, yoffset, slice,
114 intel_renderbuffer(rb), x, y, width, height)) {
115 return;
116 }
117
118 /* Finally, fall back to meta. This will likely be slow. */
119 perf_debug("%s - fallback to swrast\n", __func__);
120 _mesa_meta_CopyTexSubImage(ctx, dims, texImage,
121 xoffset, yoffset, slice,
122 rb, x, y, width, height);
123 }
124
125
126 void
intelInitTextureCopyImageFuncs(struct dd_function_table * functions)127 intelInitTextureCopyImageFuncs(struct dd_function_table *functions)
128 {
129 functions->CopyTexSubImage = intelCopyTexSubImage;
130 }
131