1 /**************************************************************************
3 * Copyright 2008 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 **************************************************************************/
29 #include "main/imports.h"
30 #include "main/macros.h"
31 #include "main/mipmap.h"
32 #include "main/teximage.h"
33 #include "main/texformat.h"
35 #include "shader/prog_instruction.h"
37 #include "pipe/p_context.h"
38 #include "pipe/p_defines.h"
39 #include "util/u_inlines.h"
40 #include "util/u_format.h"
41 #include "util/u_gen_mipmap.h"
42 #include "util/u_math.h"
44 #include "cso_cache/cso_cache.h"
45 #include "cso_cache/cso_context.h"
48 #include "st_context.h"
49 #include "st_gen_mipmap.h"
50 #include "st_texture.h"
51 #include "st_cb_texture.h"
52 #include "st_inlines.h"
56 * one-time init for generate mipmap
57 * XXX Note: there may be other times we need no-op/simple state like this.
58 * In that case, some code refactoring would be good.
61 st_init_generate_mipmap(struct st_context
*st
)
63 st
->gen_mipmap
= util_create_gen_mipmap(st
->pipe
, st
->cso_context
);
68 st_destroy_generate_mipmap(struct st_context
*st
)
70 util_destroy_gen_mipmap(st
->gen_mipmap
);
71 st
->gen_mipmap
= NULL
;
76 * Generate mipmap levels using hardware rendering.
77 * \return TRUE if successful, FALSE if not possible
80 st_render_mipmap(struct st_context
*st
,
82 struct pipe_texture
*pt
,
83 uint baseLevel
, uint lastLevel
)
85 struct pipe_context
*pipe
= st
->pipe
;
86 struct pipe_screen
*screen
= pipe
->screen
;
87 const uint face
= _mesa_tex_target_to_face(target
);
89 assert(target
!= GL_TEXTURE_3D
); /* not done yet */
91 /* check if we can render in the texture's format */
92 if (!screen
->is_format_supported(screen
, pt
->format
, pt
->target
,
93 PIPE_TEXTURE_USAGE_RENDER_TARGET
, 0)) {
97 util_gen_mipmap(st
->gen_mipmap
, pt
, face
, baseLevel
, lastLevel
,
98 PIPE_TEX_FILTER_LINEAR
);
105 fallback_generate_mipmap(GLcontext
*ctx
, GLenum target
,
106 struct gl_texture_object
*texObj
)
108 struct pipe_context
*pipe
= ctx
->st
->pipe
;
109 struct pipe_texture
*pt
= st_get_texobj_texture(texObj
);
110 const uint baseLevel
= texObj
->BaseLevel
;
111 const uint lastLevel
= pt
->last_level
;
112 const uint face
= _mesa_tex_target_to_face(target
), zslice
= 0;
117 if (ST_DEBUG
& DEBUG_FALLBACK
)
118 debug_printf("%s: fallback processing\n", __FUNCTION__
);
120 assert(target
!= GL_TEXTURE_3D
); /* not done yet */
122 _mesa_format_to_type_and_comps(texObj
->Image
[face
][baseLevel
]->TexFormat
,
125 for (dstLevel
= baseLevel
+ 1; dstLevel
<= lastLevel
; dstLevel
++) {
126 const uint srcLevel
= dstLevel
- 1;
127 struct pipe_transfer
*srcTrans
, *dstTrans
;
128 const ubyte
*srcData
;
130 int srcStride
, dstStride
;
132 srcTrans
= st_cond_flush_get_tex_transfer(st_context(ctx
), pt
, face
,
134 PIPE_TRANSFER_READ
, 0, 0,
135 u_minify(pt
->width0
, srcLevel
),
136 u_minify(pt
->height0
, srcLevel
));
138 dstTrans
= st_cond_flush_get_tex_transfer(st_context(ctx
), pt
, face
,
140 PIPE_TRANSFER_WRITE
, 0, 0,
141 u_minify(pt
->width0
, dstLevel
),
142 u_minify(pt
->height0
, dstLevel
));
144 srcData
= (ubyte
*) pipe
->transfer_map(pipe
, srcTrans
);
145 dstData
= (ubyte
*) pipe
->transfer_map(pipe
, dstTrans
);
147 srcStride
= srcTrans
->stride
/ util_format_get_blocksize(srcTrans
->texture
->format
);
148 dstStride
= dstTrans
->stride
/ util_format_get_blocksize(dstTrans
->texture
->format
);
150 _mesa_generate_mipmap_level(target
, datatype
, comps
,
152 u_minify(pt
->width0
, srcLevel
),
153 u_minify(pt
->height0
, srcLevel
),
154 u_minify(pt
->depth0
, srcLevel
),
156 srcStride
, /* stride in texels */
157 u_minify(pt
->width0
, dstLevel
),
158 u_minify(pt
->height0
, dstLevel
),
159 u_minify(pt
->depth0
, dstLevel
),
161 dstStride
); /* stride in texels */
163 pipe
->transfer_unmap(pipe
, srcTrans
);
164 pipe
->transfer_unmap(pipe
, dstTrans
);
166 pipe
->tex_transfer_destroy(pipe
, srcTrans
);
167 pipe
->tex_transfer_destroy(pipe
, dstTrans
);
173 * Compute the expected number of mipmap levels in the texture given
174 * the width/height/depth of the base image and the GL_TEXTURE_BASE_LEVEL/
175 * GL_TEXTURE_MAX_LEVEL settings. This will tell us how many mipmap
176 * level should be generated.
179 compute_num_levels(GLcontext
*ctx
,
180 struct gl_texture_object
*texObj
,
183 if (target
== GL_TEXTURE_RECTANGLE_ARB
) {
187 const GLuint maxLevels
= texObj
->MaxLevel
- texObj
->BaseLevel
+ 1;
188 const struct gl_texture_image
*baseImage
=
189 _mesa_get_tex_image(ctx
, texObj
, target
, texObj
->BaseLevel
);
190 GLuint size
, numLevels
;
192 size
= MAX2(baseImage
->Width2
, baseImage
->Height2
);
193 size
= MAX2(size
, baseImage
->Depth2
);
202 numLevels
= MIN2(numLevels
, maxLevels
);
210 st_generate_mipmap(GLcontext
*ctx
, GLenum target
,
211 struct gl_texture_object
*texObj
)
213 struct st_context
*st
= ctx
->st
;
214 struct pipe_texture
*pt
= st_get_texobj_texture(texObj
);
215 const uint baseLevel
= texObj
->BaseLevel
;
222 /* find expected last mipmap level */
223 lastLevel
= compute_num_levels(ctx
, texObj
, target
) - 1;
228 if (pt
->last_level
< lastLevel
) {
229 /* The current gallium texture doesn't have space for all the
230 * mipmap levels we need to generate. So allocate a new texture.
232 struct st_texture_object
*stObj
= st_texture_object(texObj
);
233 struct pipe_texture
*oldTex
= stObj
->pt
;
236 /* create new texture with space for more levels */
237 stObj
->pt
= st_texture_create(st
,
246 /* The texture isn't in a "complete" state yet so set the expected
247 * lastLevel here, since it won't get done in st_finalize_texture().
249 stObj
->lastLevel
= lastLevel
;
251 /* This will copy the old texture's base image into the new texture
252 * which we just allocated.
254 st_finalize_texture(ctx
, st
->pipe
, texObj
, &needFlush
);
256 /* release the old tex (will likely be freed too) */
257 pipe_texture_reference(&oldTex
, NULL
);
262 assert(lastLevel
<= pt
->last_level
);
264 /* Recall that the Mesa BaseLevel image is stored in the gallium
265 * texture's level[0] position. So pass baseLevel=0 here.
267 if (!st_render_mipmap(st
, target
, pt
, 0, lastLevel
)) {
268 fallback_generate_mipmap(ctx
, target
, texObj
);
271 /* Fill in the Mesa gl_texture_image fields */
272 for (dstLevel
= baseLevel
+ 1; dstLevel
<= lastLevel
; dstLevel
++) {
273 const uint srcLevel
= dstLevel
- 1;
274 const struct gl_texture_image
*srcImage
275 = _mesa_get_tex_image(ctx
, texObj
, target
, srcLevel
);
276 struct gl_texture_image
*dstImage
;
277 struct st_texture_image
*stImage
;
278 uint dstWidth
= u_minify(pt
->width0
, dstLevel
);
279 uint dstHeight
= u_minify(pt
->height0
, dstLevel
);
280 uint dstDepth
= u_minify(pt
->depth0
, dstLevel
);
281 uint border
= srcImage
->Border
;
283 dstImage
= _mesa_get_tex_image(ctx
, texObj
, target
, dstLevel
);
285 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "generating mipmaps");
289 /* Free old image data */
291 ctx
->Driver
.FreeTexImageData(ctx
, dstImage
);
293 /* initialize new image */
294 _mesa_init_teximage_fields(ctx
, target
, dstImage
, dstWidth
, dstHeight
,
295 dstDepth
, border
, srcImage
->InternalFormat
);
297 dstImage
->TexFormat
= srcImage
->TexFormat
;
299 stImage
= (struct st_texture_image
*) dstImage
;
300 pipe_texture_reference(&stImage
->pt
, pt
);