2 * Mesa 3-D graphics library
4 * Copyright (C) 2011 VMware, Inc. All Rights Reserved.
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7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
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11 * Software is furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included
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16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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21 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
27 * GL_ARB_texture_storage functions
37 #include "mfeatures.h"
40 #include "texstorage.h"
46 * Check if the given texture target is a legal texture object target
47 * for a glTexStorage() command.
48 * This is a bit different than legal_teximage_target() when it comes
52 legal_texobj_target(struct gl_context
*ctx
, GLuint dims
, GLenum target
)
58 case GL_PROXY_TEXTURE_1D
:
66 case GL_PROXY_TEXTURE_2D
:
68 case GL_TEXTURE_CUBE_MAP
:
69 case GL_PROXY_TEXTURE_CUBE_MAP
:
70 return ctx
->Extensions
.ARB_texture_cube_map
;
71 case GL_TEXTURE_RECTANGLE
:
72 case GL_PROXY_TEXTURE_RECTANGLE
:
73 return ctx
->Extensions
.NV_texture_rectangle
;
74 case GL_TEXTURE_1D_ARRAY
:
75 case GL_PROXY_TEXTURE_1D_ARRAY
:
76 return (ctx
->Extensions
.MESA_texture_array
||
77 ctx
->Extensions
.EXT_texture_array
);
84 case GL_PROXY_TEXTURE_3D
:
86 case GL_TEXTURE_2D_ARRAY
:
87 case GL_PROXY_TEXTURE_2D_ARRAY
:
88 return (ctx
->Extensions
.MESA_texture_array
||
89 ctx
->Extensions
.EXT_texture_array
);
94 _mesa_problem(ctx
, "invalid dims=%u in legal_texobj_target()", dims
);
101 * Compute the size of the next mipmap level.
104 next_mipmap_level_size(GLenum target
,
105 GLint
*width
, GLint
*height
, GLint
*depth
)
111 if ((*height
> 1) && (target
!= GL_TEXTURE_1D_ARRAY
)) {
115 if ((*depth
> 1) && (target
!= GL_TEXTURE_2D_ARRAY
)) {
122 * Do actual memory allocation for glTexStorage1/2/3D().
125 setup_texstorage(struct gl_context
*ctx
,
126 struct gl_texture_object
*texObj
,
129 GLsizei levels
, GLenum internalFormat
,
130 GLsizei width
, GLsizei height
, GLsizei depth
)
132 const GLenum target
= texObj
->Target
;
133 const GLuint numFaces
= _mesa_num_tex_faces(target
);
134 GLint level
, levelWidth
= width
, levelHeight
= height
, levelDepth
= depth
;
142 /* Set up all the texture object's gl_texture_images */
143 for (level
= 0; level
< levels
; level
++) {
144 for (face
= 0; face
< numFaces
; face
++) {
145 const GLenum faceTarget
=
146 (target
== GL_TEXTURE_CUBE_MAP
)
147 ? GL_TEXTURE_CUBE_MAP_POSITIVE_X
+ face
: target
;
148 struct gl_texture_image
*texImage
=
149 _mesa_get_tex_image(ctx
, texObj
, faceTarget
, level
);
152 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glTexImage%uD", dims
);
156 _mesa_init_teximage_fields(ctx
, texImage
,
157 levelWidth
, levelHeight
, levelDepth
,
158 0, internalFormat
, texFormat
);
161 next_mipmap_level_size(target
, &levelWidth
, &levelHeight
, &levelDepth
);
164 assert(levelWidth
> 0);
165 assert(levelHeight
> 0);
166 assert(levelDepth
> 0);
168 if (!_mesa_is_proxy_texture(texObj
->Target
)) {
169 /* Do actual texture memory allocation */
170 if (!ctx
->Driver
.AllocTextureStorage(ctx
, texObj
, levels
,
171 width
, height
, depth
)) {
172 /* Reset the texture images' info to zeros.
173 * Strictly speaking, we probably don't have to do this since
174 * generating GL_OUT_OF_MEMORY can leave things in an undefined
175 * state but this puts things in a consistent state.
177 for (level
= 0; level
< levels
; level
++) {
178 for (face
= 0; face
< numFaces
; face
++) {
179 struct gl_texture_image
*texImage
= texObj
->Image
[face
][level
];
181 _mesa_init_teximage_fields(ctx
, texImage
,
183 GL_NONE
, MESA_FORMAT_NONE
);
188 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glTexStorage%uD", dims
);
193 /* Only set this field for non-proxy texture objects */
194 texObj
->Immutable
= GL_TRUE
;
200 * Clear all fields of texture object to zeros. Used for proxy texture tests.
203 clear_image_fields(struct gl_context
*ctx
,
205 struct gl_texture_object
*texObj
)
207 const GLenum target
= texObj
->Target
;
208 const GLuint numFaces
= _mesa_num_tex_faces(target
);
212 for (level
= 0; level
< Elements(texObj
->Image
[0]); level
++) {
213 for (face
= 0; face
< numFaces
; face
++) {
214 const GLenum faceTarget
=
215 (target
== GL_TEXTURE_CUBE_MAP
)
216 ? GL_TEXTURE_CUBE_MAP_POSITIVE_X
+ face
: target
;
217 struct gl_texture_image
*texImage
=
218 _mesa_get_tex_image(ctx
, texObj
, faceTarget
, level
);
221 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glTexStorage%uD", dims
);
225 _mesa_init_teximage_fields(ctx
, texImage
,
226 0, 0, 0, 0, GL_NONE
, MESA_FORMAT_NONE
);
233 * Do error checking for calls to glTexStorage1/2/3D().
234 * If an error is found, record it with _mesa_error(), unless the target
235 * is a proxy texture.
236 * \return GL_TRUE if any error, GL_FALSE otherwise.
239 tex_storage_error_check(struct gl_context
*ctx
, GLuint dims
, GLenum target
,
240 GLsizei levels
, GLenum internalformat
,
241 GLsizei width
, GLsizei height
, GLsizei depth
)
243 struct gl_texture_object
*texObj
;
245 GLboolean legalFormat
;
247 /* check internal format - note that only sized formats are allowed */
248 switch (internalformat
) {
251 case GL_LUMINANCE_ALPHA
:
258 case GL_DEPTH_COMPONENT
:
259 case GL_DEPTH_STENCIL
:
260 case GL_COMPRESSED_ALPHA
:
261 case GL_COMPRESSED_LUMINANCE_ALPHA
:
262 case GL_COMPRESSED_LUMINANCE
:
263 case GL_COMPRESSED_INTENSITY
:
264 case GL_COMPRESSED_RGB
:
265 case GL_COMPRESSED_RGBA
:
266 case GL_COMPRESSED_SRGB
:
267 case GL_COMPRESSED_SRGB_ALPHA
:
268 case GL_COMPRESSED_SLUMINANCE
:
269 case GL_COMPRESSED_SLUMINANCE_ALPHA
:
271 case GL_GREEN_INTEGER
:
272 case GL_BLUE_INTEGER
:
273 case GL_ALPHA_INTEGER
:
275 case GL_RGBA_INTEGER
:
277 case GL_BGRA_INTEGER
:
278 case GL_LUMINANCE_INTEGER_EXT
:
279 case GL_LUMINANCE_ALPHA_INTEGER_EXT
:
280 /* these unsized formats are illegal */
281 legalFormat
= GL_FALSE
;
284 legalFormat
= _mesa_base_tex_format(ctx
, internalformat
) > 0;
288 _mesa_error(ctx
, GL_INVALID_ENUM
,
289 "glTexStorage%uD(internalformat = %s)", dims
,
290 _mesa_lookup_enum_by_nr(internalformat
));
295 if (width
< 1 || height
< 1 || depth
< 1) {
296 _mesa_error(ctx
, GL_INVALID_VALUE
,
297 "glTexStorage%uD(width, height or depth < 1)", dims
);
302 if (levels
< 1 || height
< 1 || depth
< 1) {
303 _mesa_error(ctx
, GL_INVALID_VALUE
, "glTexStorage%uD(levels < 1)",
309 if (!legal_texobj_target(ctx
, dims
, target
)) {
310 _mesa_error(ctx
, GL_INVALID_ENUM
,
311 "glTexStorage%uD(illegal target=%s)",
312 dims
, _mesa_lookup_enum_by_nr(target
));
316 /* check levels against maximum */
317 if (levels
> _mesa_max_texture_levels(ctx
, target
)) {
318 _mesa_error(ctx
, GL_INVALID_OPERATION
,
319 "glTexStorage%uD(levels too large)", dims
);
323 /* check levels against width/height/depth */
324 maxDim
= MAX3(width
, height
, depth
);
325 if (levels
> _mesa_logbase2(maxDim
) + 1) {
326 _mesa_error(ctx
, GL_INVALID_OPERATION
,
327 "glTexStorage%uD(too many levels for max texture dimension)",
332 /* non-default texture object check */
333 texObj
= _mesa_get_current_tex_object(ctx
, target
);
334 if (!texObj
|| (texObj
->Name
== 0)) {
335 _mesa_error(ctx
, GL_INVALID_OPERATION
,
336 "glTexStorage%uD(texture object 0)", dims
);
340 /* Check if texObj->Immutable is set */
341 if (texObj
->Immutable
) {
342 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glTexStorage%uD(immutable)",
352 * Helper used by _mesa_TexStorage1/2/3D().
355 texstorage(GLuint dims
, GLenum target
, GLsizei levels
, GLenum internalformat
,
356 GLsizei width
, GLsizei height
, GLsizei depth
)
358 struct gl_texture_object
*texObj
;
362 GET_CURRENT_CONTEXT(ctx
);
364 if (tex_storage_error_check(ctx
, dims
, target
, levels
,
365 internalformat
, width
, height
, depth
)) {
366 return; /* error was recorded */
369 texObj
= _mesa_get_current_tex_object(ctx
, target
);
372 texFormat
= _mesa_choose_texture_format(ctx
, texObj
, target
, 0,
373 internalformat
, GL_NONE
, GL_NONE
);
374 assert(texFormat
!= MESA_FORMAT_NONE
);
376 sizeOK
= ctx
->Driver
.TestProxyTexImage(ctx
, target
, 0, texFormat
,
377 width
, height
, depth
, 0);
380 if (_mesa_is_proxy_texture(texObj
->Target
)) {
381 /* clear all image fields for [levels] */
382 clear_image_fields(ctx
, dims
, texObj
);
385 _mesa_error(ctx
, GL_INVALID_VALUE
,
386 "glTexStorage%uD(invalid width, height or depth)",
392 setup_texstorage(ctx
, texObj
, dims
, texFormat
, levels
, internalformat
,
393 width
, height
, depth
);
399 _mesa_TexStorage1D(GLenum target
, GLsizei levels
, GLenum internalformat
,
402 texstorage(1, target
, levels
, internalformat
, width
, 1, 1);
407 _mesa_TexStorage2D(GLenum target
, GLsizei levels
, GLenum internalformat
,
408 GLsizei width
, GLsizei height
)
410 texstorage(2, target
, levels
, internalformat
, width
, height
, 1);
415 _mesa_TexStorage3D(GLenum target
, GLsizei levels
, GLenum internalformat
,
416 GLsizei width
, GLsizei height
, GLsizei depth
)
418 texstorage(3, target
, levels
, internalformat
, width
, height
, depth
);
424 * Note: we don't support GL_EXT_direct_state_access and the spec says
425 * we don't need the following functions. However, glew checks for the
426 * presence of all six functions and will say that GL_ARB_texture_storage
427 * is not supported if these functions are missing.
432 _mesa_TextureStorage1DEXT(GLuint texture
, GLenum target
, GLsizei levels
,
433 GLenum internalformat
,
441 _mesa_TextureStorage2DEXT(GLuint texture
, GLenum target
, GLsizei levels
,
442 GLenum internalformat
,
443 GLsizei width
, GLsizei height
)
451 _mesa_TextureStorage3DEXT(GLuint texture
, GLenum target
, GLsizei levels
,
452 GLenum internalformat
,
453 GLsizei width
, GLsizei height
, GLsizei depth
)