1 /**************************************************************************
3 * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * 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, sub license, 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:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 **************************************************************************/
28 #include "main/mtypes.h"
29 #include "main/enums.h"
30 #include "main/image.h"
31 #include "main/teximage.h"
32 #include "main/texstate.h"
33 #include "main/fbobject.h"
35 #include "drivers/common/meta.h"
37 #include "intel_screen.h"
38 #include "intel_context.h"
39 #include "intel_mipmap_tree.h"
40 #include "intel_regions.h"
41 #include "intel_fbo.h"
42 #include "intel_tex.h"
43 #include "intel_blit.h"
45 #include "brw_context.h"
48 #define FILE_DEBUG_FLAG DEBUG_TEXTURE
52 intel_copy_texsubimage(struct intel_context *intel,
53 struct intel_texture_image *intelImage,
54 GLint dstx, GLint dsty,
55 struct intel_renderbuffer *irb,
56 GLint x, GLint y, GLsizei width, GLsizei height)
58 struct gl_context *ctx = &intel->ctx;
59 const GLenum internalFormat = intelImage->base.Base.InternalFormat;
60 bool copy_supported = false;
61 bool copy_supported_with_alpha_override = false;
63 intel_prepare_render(intel);
65 if (!intelImage->mt || !irb || !irb->mt) {
66 if (unlikely(INTEL_DEBUG & DEBUG_PERF))
67 fprintf(stderr, "%s fail %p %p (0x%08x)\n",
68 __FUNCTION__, intelImage->mt, irb, internalFormat);
72 if (intelImage->base.Base.TexObject->Target == GL_TEXTURE_1D_ARRAY ||
73 intelImage->base.Base.TexObject->Target == GL_TEXTURE_2D_ARRAY) {
74 perf_debug("no support for array textures\n");
77 copy_supported = intelImage->base.Base.TexFormat == intel_rb_format(irb);
79 /* Converting ARGB8888 to XRGB8888 is trivial: ignore the alpha bits */
80 if (intel_rb_format(irb) == MESA_FORMAT_ARGB8888 &&
81 intelImage->base.Base.TexFormat == MESA_FORMAT_XRGB8888) {
82 copy_supported = true;
85 /* Converting XRGB8888 to ARGB8888 requires setting the alpha bits to 1.0 */
86 if (intel_rb_format(irb) == MESA_FORMAT_XRGB8888 &&
87 intelImage->base.Base.TexFormat == MESA_FORMAT_ARGB8888) {
88 copy_supported_with_alpha_override = true;
91 if (!copy_supported && !copy_supported_with_alpha_override) {
92 perf_debug("%s mismatched formats %s, %s\n",
94 _mesa_get_format_name(intelImage->base.Base.TexFormat),
95 _mesa_get_format_name(intel_rb_format(irb)));
99 /* blit from src buffer to texture */
100 if (!intel_miptree_blit(intel,
101 irb->mt, irb->mt_level, irb->mt_layer,
102 x, y, irb->Base.Base.Name == 0,
103 intelImage->mt, intelImage->base.Base.Level,
104 intelImage->base.Base.Face,
106 width, height, GL_COPY)) {
110 if (copy_supported_with_alpha_override)
111 intel_set_teximage_alpha_to_one(ctx, intelImage);
118 intelCopyTexSubImage(struct gl_context *ctx, GLuint dims,
119 struct gl_texture_image *texImage,
120 GLint xoffset, GLint yoffset, GLint zoffset,
121 struct gl_renderbuffer *rb,
123 GLsizei width, GLsizei height)
125 struct intel_context *intel = intel_context(ctx);
128 /* Try BLORP first. It can handle almost everything. */
129 if (brw_blorp_copytexsubimage(intel, rb, texImage, x, y,
130 xoffset, yoffset, width, height))
134 /* Next, try the BLT engine. */
135 if (intel_copy_texsubimage(intel,
136 intel_texture_image(texImage),
138 intel_renderbuffer(rb), x, y, width, height))
142 /* Finally, fall back to meta. This will likely be slow. */
143 perf_debug("%s - fallback to swrast\n", __FUNCTION__);
144 _mesa_meta_CopyTexSubImage(ctx, dims, texImage,
145 xoffset, yoffset, zoffset,
146 rb, x, y, width, height);
151 intelInitTextureCopyImageFuncs(struct dd_function_table *functions)
153 functions->CopyTexSubImage = intelCopyTexSubImage;